Reconfiguration control channel resource mapping collision avoidance

The authors of the patent

H04B1/38 - Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
H04B7/024 - Cooperative use of antennas of several nodes, e.g. in coordinated multipoint or cooperative MIMO [Multiple Input Multiple Output
H04B7/0456 - Selection of precoding matrix or codebook, e.g. using matrices for antenna weighting
H04B7/06 - Diversity systems using a plurality of spaced independent aerials at transmitting station, e.g. time diversity
H04L1 - Arrangements for detecting or preventing errors in the information received
H04L5/00 - Arrangements affording multiple use of the transmission path
H04L5/14 - Two-way operation using the same type of signal, i.e. duplex
H04L12/18 - Arrangements for providing special services to substations contains provisionally no documents for broadcast or conference, e.g. multicast
H04W4/00 - Mobile applicationservices or facilities specially adapted for wireless communication networks
H04W8/00 - Network data management
H04W24/02 - Arrangements for optimizing operational condition
H04W24/08 - Testing,supervising or monitoringusing real traffic
H04W36/30 - Reselection being triggered by specific parameters used to improve the performance of a single terminal by measured or perceived connection quality data
H04W56/00 - Synchronization arrangements
H04W68/02 - Arrangements for increasing efficiency of notification or paging channel
H04W72/04 - Wireless resource allocation
H04W72/12 - DynamicWireless traffic scheduling;Dynamically scheduled allocation on shared channel
H04W74/08 - Non-scheduled or contention basedaccess, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
H04W76/00 - Connection management, e.g. connection set-up, manipulation or release
H04W76/022 - Set-up of transport tunnels
H04W76/025 - Set-up of multiple wireless link connections
H04W84/04 - Large scale networks; Deep hierarchical networks
H04W84/12 - WLAN [Wireless Local Area Networks]
H04W88/02 - Terminal devices
H04W92/20 - Interfaces between hierarchically similar devices between access points

The owners of the patent US9445338:

Intel IP Corp

 

A device includes a transceiver to receive, from a base station, a physical downlink shared channel transmission and processing circuitry to classify downlink subframe types for a set of DL subframes associated with a first uplink subframe for transmission of a hybrid automatic report request acknowledgment and perform physical uplink control channel resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception.

 

 

RELATED APPLICATION
This application claims priority to U.S. Provisional Application Ser. No. 61/808,597 (entitled PATTERN INDICATOR SIGNAL FOR NEW DMRS PATTERN, filed Apr. 4, 2013) which is incorporated herein by reference in its entirety.
BACKGROUND
LTE (long term evolution) communications continue to evolve, with more and more releases designed to optimize bandwidth utilization and throughput performance. The use of user equipment (UE) continues to grow, taxing the ability of communication systems to handle concomitant increases in bandwidth demand.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an illustration of an example configuration of a communication network architecture according to an example embodiment.
FIG. 2 is a timing diagram illustrating a physical uplink control channel (PUCCH) resource collision issue according to an example embodiment.
FIG. 3 is a timing diagram illustrating a UL/DL configuration 2 achieved by flexibly changing the transmission direction of subframes #3 and #8 from UL to DL to meet instant traffic conditions according to an example embodiment.
FIG. 4 is a table identifying a downlink association set index K for TDD according to the DL-reference UL/DL configuration Table 10.1.3.1-1 in 3GPP Rel. 11 according to an example embodiment.
FIG. 5 is a table identifying j and l values for DL subframe within set K that associated with subframe 7 for HARQ-ACK feedback according to an example embodiment.
FIG. 6 is a table identifying a HARQ-ACK resource offset field in the DCI format of the corresponding EPDCCH according to an example embodiment.
FIG. 7 is a timing diagram illustrating PUCCH mapping according to an example embodiment.
FIG. 8 is a table utilized to determine the value of nPUCCH,i(1) according to higher layer configuration for a PDSCH transmission where there is not a corresponding PDCCH/EPDCCH detected in subframe n−ki according to an example embodiment.
FIG. 9 is a table utilized to determine the value of nPUCCH(3,{tilde over (p)}) according to higher layer configuration according to an example embodiment.
FIG. 10 is a flowchart illustrating a method of physical uplink control channel (PUCCH) resources mapping according to an example embodiment.
FIG. 11 is a flowchart illustrating a method of classifying DL subframe Types according to an example embodiment.
FIG. 12 is a flowchart illustrating a method of determining the offset for Type 1 DL subframes according to an example embodiment.
FIG. 13 is flowchart illustrating a method of determining the offset for Type 2 DL subframe according to an example embodiment.
FIG. 14 is a block diagram of electronic circuitry for performing one or more methods according to example embodiments.
DETAILED DESCRIPTION
In the following description, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration specific embodiments which may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and that structural, logical and electrical changes may be made without departing from the scope of the present invention. The following description of example embodiments is, therefore, not to be taken in a limited sense, and the scope of the present invention is defined by the appended claims.
FIG. 1 is an illustration of an example configuration of a communication network architecture 100, in accordance with some embodiments. Within the communication network architecture 100, a carrier-based network such as an IEEE 802.11 compatible wireless access point or a LTE/LTE-A cell network operating according to a standard from a 3GPP standards family is established by network equipment 102. The network equipment 102 may include a wireless access point, a Wi-Fi hotspot, or an enhanced or evolved node B (eNodeB) communicating with communication devices 104A, 104B, 104C (e.g., a user equipment (UE) or a communication station (STA)). The carrier-based network includes wireless network connections 106A, 106B, and 106C with the communication devices 104A, 104B, and 104C, respectively. The communication devices 104A, 104B, 104C are illustrated as conforming to a variety of form factors, including a smartphone, a mobile phone handset, and a personal computer having an integrated or external wireless network communication device.
The network equipment 102 is illustrated in FIG. 1 as being connected via a network connection 114 to network servers 118 in a cloud network 116. The servers 118, or any one individual server, may operate to provide various types of information to, or receive information from, communication devices 104A, 104B, 104C, including device location, user profiles, user information, web sites, e-mail, and the like. The techniques described herein enable the determination of the location of the various communication devices 104A, 104B, 104C, with respect to the network equipment 102.
Communication devices 104A, 104B, 104C may communicate with the network equipment 102 when in range or otherwise in proximity for wireless communications. As illustrated, the connection 106A may be established between the mobile device 104A (e.g., a smartphone) and the network equipment 102; the connection 106B may be established between the mobile device 104B (e.g., a mobile phone) and the network equipment 102; and the connection 106C may be established between the mobile device 104C (e.g., a personal computer) and the network equipment 102.
The wireless communications 106A, 106B, 106C between devices 104A, 104B, 104C may utilize a Wi-Fi or IEEE 802.11 standard protocol, or a protocol such as the current 3rd Generation Partnership Project (3GPP) long term evolution (LTE) time division duplex (TDD)-Advanced systems. In an embodiment, the communications network 116 and network equipment 102 comprises an evolved universal terrestrial radio access network (EUTRAN) using the 3rd Generation Partnership Project (3GPP) long term evolution (LTE) standard and operating in time division duplexing (TDD) mode. The devices 104A, 104B, 104C may include one or more antennas, receivers, transmitters, or transceivers that are configured to utilize a Wi-Fi or IEEE 802.11 standard protocol, or a protocol such as 3GPP, LTE, or LTE TDD-Advanced or any combination of these or other communications standards.
Antennas in or on devices 104A, 104B, 104C may comprise one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas or other types of antennas suitable for transmission of RF signals. In some embodiments, instead of two or more antennas, a single antenna with multiple apertures may be used. In these embodiments, each aperture may be considered a separate antenna. In some multiple-input multiple-output (MIMO) embodiments, antennas may be effectively separated to utilize spatial diversity and the different channel characteristics that may result between each of the antennas and the antennas of a transmitting station. In some MIMO embodiments, antennas may be separated by up to 1/10 of a wavelength or more.
In some embodiments, the mobile device 104A may include one or more of a keyboard, a display, a non-volatile memory port, multiple antennas, a graphics processor, an application processor, speakers, and other mobile device elements. The display may be an LCD screen including a touch screen. The mobile device 104B may be similar to mobile device 104A, but does not need to be identical. The mobile device 104C may include some or all of the features, components, or functionality described with respect to mobile device 104A.
A base station, such as an enhanced or evolved node B (eNodeB), may provide wireless communication services to communication devices, such as device 104A. While the exemplary communication system 100 of FIG. 1 depicts only three devices users 104A, 104B, 104C any combination of multiple users, devices, servers and the like may be coupled to network equipment 102 in various embodiments. For example, three or more users located in a venue, such as a building, campus, mall area, or other area, and may utilize any number of mobile wireless-enabled computing devices to independently communicate with network equipment 102. Similarly, communication system 100 may include more than one network equipment 102. For example, a plurality of access points or base stations may form an overlapping coverage area where devices may communicate with at least two instances of network equipment 102.
Although communication system 100 is illustrated as having several separate functional elements, one or more of the functional elements may be combined and may be implemented by combinations of software-configured elements, such as processing elements including digital signal processors (DSPs), and/or other hardware elements. For example, some elements may comprise one or more microprocessors, DSPs, application specific integrated circuits (ASICs), radio-frequency integrated circuits (RFICs) and combinations of various hardware and logic circuitry for performing at least the functions described herein. In some embodiments, the functional elements of system 100 may refer to one or more processes operating on one or more processing elements.
Embodiments may be implemented in one or a combination of hardware, firmware and software. Embodiments may also be implemented as instructions stored on a computer-readable storage device, which may be read and executed by at least one processor to perform the operations described herein. A computer-readable storage device may include any non-transitory mechanism for storing information in a form readable by a machine (e.g., a computer). For example, a computer-readable storage device may include read-only memory (ROM), random-access memory (RAM), magnetic disk storage media, optical storage media, flash-memory devices, and other storage devices and media. In some embodiments, system 100 may include one or more processors and may be configured with instructions stored on a computer-readable storage device.
A new Rel−12 LTE WID on “Further Enhancements to LTE TDD for uplink/downlink (UL/DL) Interference Management and Traffic Adaptation” was recently agreed upon. The main objective is to enable TDD UL/DL reconfiguration for traffic adaptation for TD-LTE system, including clustered small cells deployment. Unlike a legacy (e.g. Rel-8) eNB with semi-static UL/DL configuration, the duplex direction of flexible subframes in a cell supporting Rel−12 eIMTA feature can be changed dynamically. A number of signaling options have been extensively discussed during the eIMTA SI phase, including system information block (SIB), paging, radio resource control (RRC), medium access layer (MAC) and Physical layer signaling, characteristic with supporting different traffic adaptation time scales.
One physical uplink control channel (PUCCH) resource collision issue arising from UL/DL reconfiguration feature, regardless of SIB/paging/RRC/MAC/L1 signaling, was observed. An example of this issue is shown in FIG. 2 at 200. TDD UL/DL configuration 1 is assumed to be indicated in SystemInformationBlockType1 (SIB1), but the actual TDD UL-DL configuration, is UL/DL configuration 2 as indicated at 210, which is achieved by flexibly changing the transmission direction of subframes #3 and #8 from UL to DL to meet instant traffic conditions and consequently maximize the radio spectrum efficiency as seen in FIG. 3 at 310 and 315 respectively. The DL-reference UL/DL configuration is known by Rel−12 UL/DL reconfiguration capable UE so that UE can utilize the flexible subframe resources. In addition, UE can properly determine the hybrid automatic repeat request-acknowledgement (HARQ-ACK) timeline for physical dedicated shared channel (PDSCH) transmission according to DL-reference UL/DL configuration. In this example, DL-reference UL/DL configuration is assumed to be TDD UL/DL configuration 2. It can be seen that the PUCCH resources associated with the two PDCCHs—PDCCH 1 in subframe #9 at 215 within radio frame n−1 for UE1 and PDCCH 2 in subframe #0 at 220 within radio frame n for UE2 are collided in the same PUCCH 1a/1b resource at the UL subframe #7 at 225 in radio frame n. The reason for this is that the same number of the first control channel element (CCE) index, nCCE,m=6, is used by two PDCCHs and two different PDSCH HARQ-ACK timing relationship are assumed at UE1 and UE2 separately. As a consequence, the implicitly mapped PUCCH resources are exactly the same at two UEs according to the equation below:
nPUCCH,i(1)=(M−m−1)·Nc+m·Nc+1+nCCE,m+NPUCCH(1)
Where nCCE,m is the number of the first CCE used for transmission of the corresponding PDCCH in subframe. This is a common PUCCH resource collision issue for all TDD UL/DL re-configuration signaling methods. Two solutions are proposed to address it.
In one embodiment, the PDSCH subframes are firstly classified into two types—Type 1 and Type 2. After classification of the subframes, PUCCH resource mapping is performed based on DL subframe types. Additionally, to avoid excessive control overhead, the ARO (i.e. HARQ-ACK resource offset field) may be used to compress the PUCCH region.
There has been no known solution for PUCCH resource mapping scheme for UL-DL reconfiguration supporting in Rel−12, targeting for PUCCH resource mapping collision avoidance.
In one embodiment, the downlink subframes associated with an uplink subframe for HARQ-ACK feedback are classified into two types (i.e. Type 1 and Type 2) according to the TDD UL/DL configuration contained in SIB1 message and the DL-reference UL/DL configuration indicated by higher layer signaling as below:
Type 1 subframes are DL subframes that associated with a UL subframe n for HARQ-ACK feedback according to the SIB1 TDD UL/DL configuration.
Type 2 subframes are the DL subframes that are constructed with a two-step approach:
Step-1: Type 2 subframes are DL subframes associated with the UL subframe n for HARQ-ACK feedback according to a higher layer configured DL-reference UL/DL configuration. This configuration can be either implicitly determined based on TDD UL/DL configurations of two consecutive radio frames as documented in previous IDF [1] or explicitly indicated by higher-layer signaling.
Step-2: if the Type 1 subframes are overlapped with the Type 2 subframes that have been constructed in Step-1, the overlapping subframes will be further removed from Type 2 subframes.
In one embodiment as shown in FIG. 3 at 300, assuming that TDD configuration 1 is indicated in SIB1, while the DL-reference UL/DL configuration is configuration #2, then Type 1 subframes include subframe #1 at 305 and #0 at 310 in radio frame n. While, Type 2 subframes comprise of subframe #3 at 320 in radio frame n and subframe #9 at 325 in radio frame n−1.
Solution 1: PUCCH format 1b with Channel Selection (CS). To address the potential PUCCH resource collision issue, one hybrid PUCCH resource mapping method includes the following. Let M denote the number of elements in the set K defined in Table 10.1.3.1-1 in 3GPP Rel. 11 as shown at 400 in FIG. 4 identifying a downlink association set index K for TDD according to the DL-reference UL/DL configuration. The Set K is further divided into two sets: K1 and K2, each of which is comprised of a number of subframes in set K. The set K1 includes all Type 1 subframe and set K2 includes all Type 2 subframe. M=M1+M2, where M1 and M2 denotes the number of DL subframes in set K1 and K2 respectively.
Let n CCH,j denote the PUCCH resource derived from sub-frame n−ki and HARQ-ACK(i) as the ACK/NACK/DTX response from sub-frame n−ki according to DL-reference UL/DL configuration, where kiεK, and 0≦i≦M−1. Let j denote the position of subframe n−ki within the set K1 in an increasing order of i value from j=0, where 0≦j≦M1−1, and let 1 denote the position of subframe n−ki within the set K2 in an increasing order of i value from l=0, where 0≦l≦M2−1.
In one embodiment, assuming SIB1 TDD UL/DL configuration is configuration 1, and DL-reference UL/DL configuration is configuration 2, the corresponding j and l values for DL subframe within set K that associated with subframe 7 for HARQ-ACK feedback are shown at 500 in FIG. 5 with an example of DL subframe indexing across set K1 at 510 and K2 at 515.
After PDSCH subframes are indexed within the corresponding set, PUCCH resources mapping is performed as follows: For a PDSCH transmission indicated by the detection of corresponding PDCCH or a PDCCH indicating downlink SPS release in subframe n−ki, if it corresponds to Type 1 subframe j (0≦j≦M1−1), the PUCCH resource
nPUCCH,j(1)=(M1−j−1)·Nc+j·Nc+1+nCCE,j+NPUCCH(1)  (1-0)
If it corresponds to Type 2 subframe 1 (0≦l≦M2−1), the PUCCH resource:
nPUCCH,l(1)=(M2-l-1)·Nc+l·Nc+1+nCCE,l+NPUCCH(2) or(2-0)nPUCCH,l(1)=l·N4+nCCE,l+NPUCCH(2) or(3-0)nPUCCH,l(1)=c=0l-1m=1NCFI,cNm+nCCE,l+NPUCCH(2)(4-0)
Where c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1, N≦nCCE,lc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in subframe c, nCCE,j and nCCE,l is the number of the first CCE used for transmission of the corresponding PDCCH in subframe j and l respectively. Index j is the index of Type 1 subframe within set K1 and index 1 is the index of Type 2 subframe within set K2.
NPUCCH(1) is PUCCH resource offset associated with legacy PDCCH that is configured by higher layers for PUCCH resource mapping. NPUCCH(2) is a PUCCH resource offset providing the starting point of the PUCCH resources for Type 2 subframes, which can be configured by higher layer, either in a UE specific or Cell specific manner, or be calculated using the formula:
NPUCCH(2)=M1·N4  (5-0)
This PUCCH Format 1a/1b resource for an HARQ-ACK signal transmission in response to legacy PDCCH-scheduled PDSCH can be further optimized by introducing 2-bits ARO (i.e. HARQ-ACK resource offset field) to avoid excessive control overhead, and considering the fact that dynamic PUCCH format 1a/1b resource space is often underutilized. If UL/DL reconfiguration has been activated for one UE, an explicit 2-bit ARO indication field is always present for all the DL DCI formats that are carried by UE specific search space on legacy PDCCH across all DL subframes, regardless of subframe type. The equation (1-0), (2-0), (3-0) and (4-0) can be straightforwardly extended to (1-1), (2-1), (3-1) and (4-1) by using 2-bits ARO as:
n PUCCH , j ( 1 ) = ( M 1 - j - 1 ) · N c + j · N c + 1 + n CCE , j + N PUCCH ( 1 ) + Δ ARO ( 1 - 1 ) n PUCCH , l ( 1 ) = ( M 2 - l - 1 ) · N c + l · N c + 1 + n CCE , l + N PUCCH ( 2 ) + Δ ARO ( 2 - 1 ) n PUCCH , l ( 1 ) = l · N 4 + n CCE , l + N PUCCH ( 2 ) + Δ ARO ( 3 - 1 ) n PUCCH , l ( 1 ) = c = 0 l - 1 m = 1 N CFI , c N m + n CCE , l + N PUCCH ( 2 ) + Δ ARO ( 4 - 1 )
ΔARO is determined based on the value of M as follows: If M=1, ΔARO is determined from the HARQ-ACK resource offset field in the DCI format of the corresponding EPDCCH as given in Table 10.1.2.1-1. If M>1, ΔARO is determined from the HARQ-ACK resource offset field in the DCI format of the corresponding EPDCCH as given in Table 1 at 600 in FIG. 6.
UE shall assume the ΔARO=0 for PUCCH resource mapping using equation (1-1) and (2-1) if the corresponding DCI is transmitted on Common Search Space (CSS) on legacy PDCCH in Type 1 subframe at least.
Several solutions could be considered for the definition of Δ1 or Δ2:
For Type 1 subframes: Alternative. 1: 0—same as M=1 case. Alternative 2:
    • Alt 2-0: −(M1−j−1)·Nc−j·Nc+1
    • Alt 2-1: −M1·(Nc−Nc−1)
    • Alt 2-2: −j·(Nc+1−Nc)
    • Alt 2-3: −(Nc+1−Nc)
    • Alt 2-4: −M1·Nc
One example for Alternative 2 is shown at 700 in FIG. 7 by assuming that the M1=3. As clearly shown in the Figure, the PUCCH overhead for type 1 subframes may be flexibly reduced by proper selecting ARO setting at eNB side.
For Type 2 subframes, all the potential values for Δ1 and Δ2 can be reused by replacing symbol j with symbol l and symbol M1 with M2. Additionally, some extra values may be used in further embodiments:
Alternative 0 : - ( N PUCCH ( 2 ) - N PUCCH ( 1 ) ) Alternative 1 : M 1 · N 4 Alternative 2 : c = 0 M 1 - 1 m = 1 N CFI , c N m
Alternatives 1 and 2 are useful for the case that NPUCCH(1)=NPUCCH(2) to ensure PUCCH always available and no eNB scheduler constrains incurs. For a PDSCH transmission where there is not a corresponding PDCCH/EPDCCH detected in subframe n−ki, the value of the value of nPUCCH,i(1) is determined according to higher layer configuration and Table 9.2-2 shown at 800 in FIG. 8.
For a PDSCH transmission indicated by the detection of corresponding EPDCCH or a EPDCCH indicating downlink SPS release in sub-frame n−ki where ki εK, the UE shall use if EPDCCH-PRB-set q is configured for distributed transmission:
nPUCCH,i(1)=nECCE,q+i1=0i-1NECCE,q,n-ki1+ΔARO+NPUCCH,q(e1)(5-0)
If EPDCCH-PRB-set q is configured for localised transmission
nPUCCH,i(1)=(6-0)nECCE,qNRBECCE,q·NRBECCE,q+i1=0i-1NECCE,q,n-ki1+n+ΔARO+NPUCCH,q(e1)
where nECCE,q is the number of the first ECCE (i.e. lowest ECCE index used to construct the EPDCCH) used for transmission of the corresponding DCI assignment in EPDCCH-PRB-set q in subframe n−ki, NPUCCH,q(e1) for EPDCCH-PRB-set q is configured by the higher layer parameter pucch-ResourceStartOffset-r11, NRBECCE,q for EPDCCH-PRB-set q in subframe n−ki is given in section 6.8A.1 in 3GPP TS 36.211 V. 11.2.0, n′ is determined from the antenna port used for EPDCCH transmission in subframe n−k, which is described in section 6.8A.5 in 3GPP TS 36.211 V. 11.2.0. If i=0, ΔARO is determined from the HARQ-ACK resource offset field in the DCI format of the corresponding EPDCCH as given in Table 10.1.2.1-1. If i>0, ΔARO is determined from the HARQ-ACK resource offset field in the DCI format of the corresponding EPDCCH as given in Table 10.1.3.1-2, where the variable m in the table is substituted with i. If the UE is configured to monitor EPDCCH in subframe n−ki1, NECCE,q,n−ki1 is equal to the number of ECCEs in EPDCCH-PRB-set q configured for that UE in subframe n−ki1. If the UE is not configured to monitor EPDCCH in subframe n−ki1, NECCE,q,n−ki1 is equal to the number of ECCEs computed assuming EPDCCH-PRB-set q is configured for that UE in subframe n−ki1. For normal downlink CP, if subframe n−ki1 is a special subframe with special subframe configuration 0 or 5, NECCE,q,n−ki1 is equal to 0. For extended downlink CP, if subframe n−ki, is a special subframe with special subframe configuration 0 or 4 or 7, NECCE,q,n−ki1 is equal to 0.
Considering the fact that in certain configurations, different DL subframes in the bundling window may have different numbers of ECCEs per PRB pair even for the same EPDCCH set k, such as special subframe, etc., and have different minimum aggregation level as well, to avoid the unnecessary PUCCH overhead, the equation (5-0) and (6-0) can be changed to (5-1) and (6-1) below:
nPUCCH,i(1)=nECCE,qLi+i1=0i-1(NECCE,q,n-ki1Li1)+ΔARO+NPUCCH,q(e1)(5-1)nPUCCH,i(1)=nECCE,qLi·NRBECCE,q·NRBECCE,q+i1=0i-1(NECCE,q,n-ki1Li1)+n+ΔARO+NPUCCH,q(e1)(6-1)
Where Li denotes the minimum supportable aggregation level in subframe i.
In a further embodiment utilizing a second solution, solution 2, the PUCCH format 3 is used for HARQ-ACK feedback. On the other hand, a different potential solution is that one (e.g. for one antenna port case) or two (e.g. for two antenna ports case) PUCCH format 1a/1b resource(s) are configured by higher layer for UL/DL reconfiguration capable of UE, and PUCCH format 3 is required to be configured for HARQ-ACK transmission after UL/DL reconfiguration is activated for one UE.
For a single PDSCH transmission or downlink SPS release indicated by the detection of a corresponding PDCCH/EPDCCH in subframe n−k, where kmεK, and the DAI value in the PDCCH/EPDCCH is equal to ‘1’, the UE shall use the PUCCH format 1a/1b and the higher-layer configured PUCCH format 1a/1b resource for HARQ-ACK feedback.
For a single PDSCH transmission where there is not a corresponding PDCCH/EPDCCH detected within subframe(s) n−k, where kεK, and no PDCCH/EPDCCH indicating downlink SPS release within subframe(s) n−k, where kεK, UE shall determine the PUCCH resources according to higher layer configuration and Table 9.2-2.
Otherwise, UE shall use PUCCH format 3 and PUCCH resource nPUCCH(3,{tilde over (p)}) where the value of nPUCCH(3,{tilde over (p)}) is determined according to higher layer configuration and Table 10.1.2.2.2-1 shown at 900 in FIG. 9. If DAI value greater than ‘1’ is indicated in PDCCH, the TPC field in a PDCCH assignment with DAI value greater than ‘1’ shall be used to determine the PUCCH resource value from one of the four PUCCH resource values configured by higher layers, with the mapping defined in Table 10.1.2.2.2-1.
If DAI value greater than ‘1’ is indicated in EPDCCH, the HARQ-ACK resource offset field in the DCI format of the corresponding EPDCCH assignment with DAI value greater than ‘1’ shall be used to determine the PUCCH resource value from one of the four PUCCH resource values configured by higher layers, with the mapping defined in Table 10.1.2.2.2-1.
FIG. 10 is a flowchart illustrating a method 1000 beginning with UE receiving a physical downlink shared channel (PDSCH) transmission at 1010 from a base station. Processing circuitry is used to classify downlink (DL) subframe types at 1020 for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK). The processing circuitry further performs physical uplink control channel (PUCCH) resources mapping at 1030 based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception.
FIG. 11 is a flowchart illustrating a method 1100 of classifying the DL subframe Types. At 1110, Type 1 DL subframes that are constructed by DL subframes that are associated with a first uplink (UL) subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1 (SIB1) message. Type 2 DL subframes are constructed at 1120 by firstly identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration. If the Type 1 DL subframes are overlapped with the Type 2 DL subframes, the overlapping subframes between Type 1 and Type 2 DL subframes are further removed from the Type 2 DL subframes at 1130.
FIG. 12 is a flowchart illustrating a method 1200 of determining the offset for Type 1 DL subframes. At 1210, processing circuitry determines the HARQ-ACK offset ΔARO for a Type 1 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depends on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission. At 1220, processing circuitry begins by selecting a ΔARO value out of {0,−1,−2, 2} if the number of Type 1 DL subframes is one. At 1230, the processing circuitry selects a value out of {0, Δ1−1, Δ2−2, 2} if the number of Type 1 DL subframes is more than one, where Δ1 or Δ2 could be one of {0, −(M1−j−1)·Nc−j·Nc+1, −M1·(Nc−Nc−1), −j·(Nc+1−Nc),−(Nc+1−Nc), −M1·Nc}, and j(0≦j≦M1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1,Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}.
FIG. 13 is a flowchart illustrating a method 1300 of determining the offset for Type 2 DL subframe. At 1310 processing circuitry is used to determine the HARQ-ACK offset for a Type 2 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission. The method 1300 processed to select a ΔARO value out of {0,−1,−2, 2} at 1310 if the number of Type 2 DL subframes is one. At 1320, the processing circuitry selects a ΔARO value out of {0, Δ1−1, Δ2−2, 2} if the number of Type 2 DL subframes is more than one, where Δ1 or Δ2 could be one value of {0, −(M2−l−1)·Nc−l·Nc+1,−M2·(Nc−Nc−1),−l·(Nc+1−Nc),−(Nc+1−Nc),−M2·Nc,
-(NPUCCH(2)-NPUCCH(1)),M1·N4,c=0M1-1m=1NCFI,cNm},
and l(0≦l2) is the index of the Type 2 DL subframe, and M1 is the number of Type 1 DL subframes associated with the same first UL subframe for HARQ-ACK transmission and M2 is the number of Type 2 DL subframes, and NUCCH and NPUCCH(2) is PUCCH resource offset associated with PDSCH on Type 1 DL subframes and Type 2 DL subframes respectively for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that is selected from {0, 1, 2, 3} such that NcCCE,lc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
FIG. 14 is a block diagram of a specifically programmed computer system to act as one or more different types of UE, cell stations, including small cell stations and macro stations. The system may be used to implement one or more methods according to the examples described. In the embodiment shown in FIG. 14, a hardware and operating environment is provided to enable the computer system to execute one or more methods and functions that are described herein. In some embodiments, the system may be a small cell station, macro cell station, smart phone, tablet, or other networked device that can provide access and wireless networking capabilities to one or more devices. Such devices need not have all the components included in FIG. 14.
FIG. 14 illustrates a functional block diagram of a cell station 1400 in accordance with some embodiments. Cell station 1400 may be suitable for use as a small cell station, macro cell station, or user equipment, such as a wireless cell phone, tablet or other computer. The cell station 1400 may include physical layer circuitry 1402 for transmitting and receiving signals to and from eNBs using one or more antennas 1401. Cell station 1400 may also include processing circuitry 1404 that may include, among other things a channel estimator. Cell station 1400 may also include memory 1406. The processing circuitry may be configured to determine several different feedback values discussed below for transmission to the eNB. The processing circuitry may also include a media access control (MAC) layer.
In some embodiments, the cell station 1400 may include one or more of a keyboard, a display, a non-volatile memory port, multiple antennas, a graphics processor, an application processor, speakers, and other mobile device elements. The display may be an LCD screen including a touch screen.
The one or more antennas 1401 utilized by the cell station 1400 may comprise one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas or other types of antennas suitable for transmission of RF signals. In some embodiments, instead of two or more antennas, a single antenna with multiple apertures may be used. In these embodiments, each aperture may be considered a separate antenna. In some multiple-input multiple-output (MIMO) embodiments, the antennas may be effectively separated to take advantage of spatial diversity and the different channel characteristics that may result between each of antennas and the antennas of a transmitting station. In some MIMO embodiments, the antennas may be separated by up to 1/10 of a wavelength or more.
Although the cell station 1400 is illustrated as having several separate functional elements, one or more of the functional elements may be combined and may be implemented by combinations of software-configured elements, such as processing elements including digital signal processors (DSPs), and/or other hardware elements. For example, some elements may comprise one or more microprocessors, DSPs, application specific integrated circuits (ASICs), radio-frequency integrated circuits (RFICs) and combinations of various hardware and logic circuitry for performing at least the functions described herein. In some embodiments, the functional elements may refer to one or more processes operating on one or more processing elements.
Embodiments may be implemented in one or a combination of hardware, firmware and software. Embodiments may also be implemented as instructions stored on a computer-readable storage medium, which may be read and executed by at least one processor to perform the operations described herein. A computer-readable storage medium may include any non-transitory mechanism for storing information in a form readable by a machine (e.g., a computer). For example, a computer-readable storage medium may include read-only memory (ROM), random-access memory (RAM), magnetic disk storage media, optical storage media, flash-memory devices, and other storage devices and media. In these embodiments, one or more processors of the cell station 1400 may be configured with the instructions to perform the operations described herein.
In some embodiments, the cell station 1400 may be configured to receive OFDM communication signals over a multicarrier communication channel in accordance with an OFDMA communication technique. The OFDM signals may comprise a plurality of orthogonal subcarriers. In some broadband multicarrier embodiments, evolved node Bs (eNBs) may be part of a broadband wireless access (BWA) network communication network, such as a Worldwide Interoperability for Microwave Access (WiMAX) communication network or a 3rd Generation Partnership Project (3GPP) Universal Terrestrial Radio Access Network (UTRAN) Long-Term-Evolution (LTE) or a Long-Term-Evolution (LTE) communication network, although the scope of the invention is not limited in this respect. In these broadband multicarrier embodiments, the cell station 1400 and the eNBs may be configured to communicate in accordance with an orthogonal frequency division multiple access (OFDMA) technique. The UTRAN LTE standards include the 3rd Generation Partnership Project (3GPP) standards for UTRAN-LTE, release 8, March 2008, and release 10, December 2010, including variations and evolutions thereof.
In some LTE embodiments, the basic unit of the wireless resource is the Physical Resource Block (PRB). The PRB may comprise 12 sub-carriers in the frequency domain and N consecutive symbols corresponding to 0.5 ms in the time domain depends on the cyclic prefix length configured by the higher layer parameter. In these embodiments, the PRB may comprise a plurality of resource elements (REs). A RE is uniquely defined by the index pair (k, 1) in a slot where k is index in frequency domain and 1 is the index in the time domain.
Two types of reference signals may be transmitted by an eNB including demodulation reference signals (DM-RS), a common reference signal (CRS) and/or channel state information reference signals (CSI-RS). The DM-RS may be used by the UE for data demodulation. The reference signals may be transmitted in predetermined PRBs.
In some embodiments, the OFDMA technique may be either a frequency domain duplexing (FDD) technique that uses different uplink and downlink spectrum or a time-domain duplexing (TDD) technique that uses the same spectrum for uplink and downlink.
In some other embodiments, the cell station 1400 and the eNBs may be configured to communicate signals that were transmitted using one or more other modulation techniques such as spread spectrum modulation (e.g., direct sequence code division multiple access (DS-CDMA) and/or frequency hopping code division multiple access (FH-CDMA)), time-division multiplexing (TDM) modulation, and/or frequency-division multiplexing (FDM) modulation, although the scope of the embodiments is not limited in this respect.
In some embodiments, the cell station 1400 may be part of a portable wireless communication device, such as a personal digital assistant (PDA), a laptop or portable computer with wireless communication capability, a web tablet, a wireless telephone, a wireless headset, a pager, an instant messaging device, a digital camera, an access point, a television, a medical device (e.g., a heart rate monitor, a blood pressure monitor, etc.), or other device that may receive and/or transmit information wirelessly.
In some embodiments, the cell station may be configured in one of 8 “transmission modes” for PDSCH reception: Mode 1: Single antenna port, port 0; Mode 2: Transmit diversity; Mode 3: Large-delay CDD; Mode 4: Closed-loop spatial multiplexing; Mode 5: MU-MIMO; Mode 6: Closed-loop spatial multiplexing, single layer; Mode 7: Single antenna port, cell station-specific RS (port 5); Mode 8 (new in Rel-9): Single or dual-layer transmission with cell station-specific RS (ports 7 and/or 8). The CSI-RS are used by the cell station for channel estimates (i.e., CQI measurements). In some embodiments, the CSI-RS are transmitted periodically in particular antenna ports (up to eight transmit antenna ports) at different subcarrier frequencies (assigned to the cell station) for use in estimating a MIMO channel. In some embodiments, a cell station-specific demodulation reference signal (e.g., a DM-RS) may be precoded in the same way as the data when non-codebook-based precoding is applied.
EXAMPLES
1. A device comprising:
a transceiver to receive, from a base station, a physical downlink shared channel (PDSCH) transmission; and
processing circuitry to:
    • classify downlink (DL) subframe types for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK); and
    • perform physical uplink control channel (PUCCH) resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception.
2. The device of example 1 wherein the DL subframe types comprise:
Type 1 DL subframes that are constructed by DL subframes that are associated with a first uplink (UL) subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1(SIB1) message; and
Type 2 DL subframes that are constructed by:
    • firstly identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration; and
    • if the Type 1 DL subframes are overlapped with the Type 2 DL subframes, the overlapping subframes between Type 1 and Type 2 DL subframes are further removed from the Type 2 DL subframes.
3. The device of any of examples 1-2, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 1 DL subframe based on:
nPUCCH,j(1)=(M1−j−1)·Nc+j·Nc+1+nCCE,j+NPUCCH(1)
where NPUCCH(1) is a PUCCH resource offset associated with legacy PDCCH that is configured by higher layer for PUCCH resource mapping of Type 1 DL subframes, c is selected from {0, 1, 2, 3} such that Nc≦nCCE,j≦Nc+1, Nc=max{0, └[NRBDL·(NscRB·c−4)]/36┘}, NRBDL refers to Downlink bandwidth configuration and NscRB refers to resource block size in the frequency domain that is expressed as a number of subcarriers, nCCE,j is the number of the first control channel element (CCE) used for transmission of the corresponding PDCCH in Type 1 DL subframe j, and j(0≦j≦M1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes.
4. The device of example 3, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via PDCCH on a Type 1 DL subframe based on:
nPUCCH,j(1)=(M1−j−1)·Nc+j·Nc+1+nCCE,j+NPUCCH(1)ARO
Where j(0≦j≦M1) is the index of the Type 1 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected from predefined values based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
5. The device of example 4, wherein the processing circuitry further performs determining the HARQ-ACK offset ΔARO for a Type 1 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} if the number of Type 1 DL subframes is one; and
selecting a value out of {0, Δ1−1, Δ2−2, 2} if the number of Type 1 DL subframes is more than one, where Δ1 or Δ2 could be one of {0, −(M1−j−1)·Nc−j·Nc+1, −M1·(Nc−Nc−1), −j·(Nc+1−Nc),−(Nc+1−Nc), −M1·Nc}, and j(0≦j≦M1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1,Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}.
6. The device of any of examples 1-5, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 2 DL subframe based on higher-layer signaling or based on:
nPUCCH,l(1)=(M2-l-1)·Nc+l·Nc+1+nCCE,l+NPUCCH(2)ornPUCCH,l(1)=l·N4+nCCE,l+NPUCCH(2)ornPUCCH,l(1)=c=0l-1m=1NCFI,cNm+nCCE,l+NPUCCH(2)
where NPUCCH(2) is PUCCH resource offset associated with PDSCH on Type 2 DL subframes for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, NRBDL refers to downlink bandwidth configuration and NscRB refers to resource block size in the frequency domain that is expressed as a number of subcarriers. nCCE,l is the number of the first channel control element (CCE) used for transmission of the corresponding PDCCH in Type 2 DL subframe l, and l(0≦l2) is the index of a Type 2 DL subframe and M2 is the number of Type 2 DL subframes, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
7. The device of example 6 wherein the PUCCH resource offset NPUCCH(2) are configured by higher layer signal in a user equipment specific manner or a Cell-specific manner, or determined based on:
NPUCCH(2)=M1·N4
where M1 is a number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission, and N4 refers to PUCCH resources reserved for a Type 1 DL subframe and is calculated according to Nc=max{0, └[NRBDL·(NscRB·c−4)]/36┘}.
8. The device of example 6, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission on a Type 2 DL subframe via PDCCH based on:
nPUCCH,l(1)=(M2-l-1)·Nc+l·Nc+1+nCCE,l+NPUCCH(2)+ΔAROornPUCCH,l(1)=l·N4+nCCE,l+NPUCCH(2)+ΔAROornPUCCH,l(1)=c=0l-1m=1NCFI,cNm+nCCE,l+NPUCCH(2)+ΔARO
where l(0≦12) is the index of the Type 2 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
9. The device of example 8, wherein the processing circuitry further performs determining the HARQ-ACK offset for a Type 2 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} if the number of Type 2 DL subframes is one.
selecting a ΔARO value out of {0, Δ1−1, Δ2−2, 2} if the number of Type 2 DL subframes is more than one, where Δ1 or Δ2 could be one value of {0, −(M2−l−1)·Nc−l·Nc+1,−M2·(Nc−Nc−1),−l·(Nc+1−Nc),−(Nc+1−Nc),−M2·Nc,
-(NPUCCH(2)-NPUCCH(1)),M1·N4,c=0M1-1m=1NCFI,cNm},
and l(0≦l2) is the index of the Type 2 DL subframe, and M1 is the number of Type 1 DL subframes associated with the same first UL subframe for HARQ-ACK transmission and M2 is the number of Type 2 DL subframes, and NPUCCH(1) and NPUCCH(2) is PUCCH resource offset associated with PDSCH on Type 1 DL subframes and Type 2 DL subframes respectively for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
10. The device of any of examples 1-9, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via enhanced physical downlink control channel (EPDCCH) or a EPDCCH indicating downlink semi persistent scheduling (SPS) release in a Type 1 or Type 2 sub-frame, the user equipment (UE) shall use:
nPUCCH,i(1)=nECCE,q+i1=0i-1NECCE,q,n-ki1+ΔARO+NPUCCH,q(e1)
if EPDCCH-physical resource block(PRB)-set q is configured for distributed transmission, or
nPUCCH,i(1)=nECCE,qNRBECCE,q·NRBECCE,q+i1=0i-1NECCE,q,n-ki1+n+ΔARO+NPUCCH,q(e1)
if EPDCCH-PRB-set q is configured for localised transmission where nECCE,q is the number of the first ECCE (i.e. lowest ECCE index used to construct the EPDCCH) used for transmission of a corresponding downlink control information (DCI) assignment in EPDCCH-PRB-set q in subframe n−ki, NPUCCH,q(e1) for EPDCCH-PRB-set q is configured by the higher layer parameter pucch-ResourceStartOffset-r11, NRBECCE,q for EPDCCH-PRB-set q in subframe n−ki is given, and n′ is determined from the antenna port used for EPDCCH transmission in subframe n−ki, and ΔARO is the HARQ-ACK resource offset.
11. The device of example 10, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via EPDCCH or EPDCCH indicating downlink SPS release in a Type 1 or Type 2 sub-frame, the user equipment (UE) shall use:
nPUCCH,i(1)=nECCE,qLi+i1=0i-1(NECCE,q,n-ki1Li1)+ΔARO+NPUCCH,q(e1)ornPUCCH,i(1)=nECCE,qLi·NRBECCE,q·NRBECCE,q+i1=0i-1(NECCE,q,n-ki1Li1)+n+ΔARO+NPUCCH,q(e1)
where Li denotes the minimum supportable aggregation level in subframe i.
12. A method comprising:
receiving from a base station via a transceiver, a physical downlink shared channel (PDSCH) transmission;
classifying, via processing circuitry, downlink (DL) subframe types for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK); and
performing physical uplink control channel (PUCCH) resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception.
13. The method of example 12 wherein the DL subframe types comprise:
Type 1 DL subframes that are constructed by DL subframes that are associated with a first uplink (UL) subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1 (SIB1) message; and
Type 2 DL subframes that are constructed by:
    • firstly identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration; and
    • if the Type 1 DL subframes are overlapped with the Type 2 DL subframes, the overlapping subframes between Type 1 and Type 2 DL subframes are further removed from the Type 2 DL subframes.
14. The method of any of examples 12-13, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 1 DL subframe based on:
nPUCCH,j(1)=(M1−j−1)·Nc+j·Nc+1+nCCE,j+NPUCCH(1)
where NPUCCH(1) is a PUCCH resource offset associated with legacy PDCCH that is configured by higher layer for PUCCH resource mapping of Type 1 DL subframes, c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, NRBDL refers to downlink bandwidth configuration and NscRB refers to resource block size in the frequency domain that is expressed as a number of subcarriers, nCCE,j is the number of the first control channel element (CCE) used for transmission of the corresponding PDCCH in Type 1 DL subframe j, and j(0≦j≦M1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes.
15. The method of example 14, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via PDCCH on a Type 1 DL subframe based on:
nPUCCH,j(1)=(M1−j−1)·Nc+j·Nc+1+nCCE,j+NPUCCH(1)ARO
where j(0≦j≦M1) is the index of the Type 1 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected from predefined values based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
16. The method of example 15, further comprising determining the HARQ-ACK offset ΔARO for a Type 1 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} if the number of Type 1 DL subframes is one; and
selecting a value out of {0, Δ1−1, Δ2−2, 2} if the number of Type 1 DL subframes is more than one, where Δ1 or Δ2 could be one of {0, −(M1−j−1)·Nc−j·Nc+1, −M1·(Nc−Nc−1), −j·(Nc+1−Nc),−(Nc+1−Nc), −M1·Nc}, and j(0≦j≦M1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1,Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}.
17. The method of any of examples 12-16, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 2 DL subframe based on higher-layer signaling or based on:
nPUCCH,l(1)=(M2-l-1)·Nc+l·Nc+1+nCCE,l+NPUCCH(2)ornPUCCH,l(1)=l·N4+nCCE,l+NPUCCH(2)ornPUCCH,l(1)=c=0l-1m=1NCFI,cNm+nCCE,l+NPUCCH(2)
where NPUCCH(2) is PUCCH resource offset associated with PDSCH on Type 2 DL subframes for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, NRBDL refers to downlink bandwidth configuration and NscRB refers to resource block size in the frequency domain that is expressed as a number of subcarriers. nCCE,l is the number of the first channel control element (CCE) used for transmission of the corresponding PDCCH in Type 2 DL subframe l, and l(0≦l2) is the index of a Type 2 DL subframe and M2 is the number of Type 2 DL subframes, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
18. The method of example 17 wherein the PUCCH resource offset NPUCCH(2) are configured by higher layer signal in a user equipment specific manner or a Cell-specific manner, or determined based on:
NPUCCH(2)=M1·N4
where M1 is a number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission, and N4 refers to PUCCH resources reserved for a Type 1 DL subframe and is calculated according to Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}.
19. The method of example 17, further comprising performing PUCCH resource mapping for PDSCH transmission on a Type 2 DL subframe via PDCCH based on:
nPUCCH,l(1)=(M2-l-1)·Nc+l·Nc+1+nCCE,l+NPUCCH(2)+ΔAROornPUCCH,l(1)=l·N4+nCCE,l+NPUCCH(2)+ΔAROornPUCCH,l(1)=c=0l-1m=1NCFI,cNm+nCCE,l+NPUCCH(2)+ΔARO
where l(0≦l2) is the index of the Type 2 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
20. The method of example 19, further comprising determining the HARQ-ACK offset for a Type 2 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} if the number of Type 2 DL subframes is one.
selecting a ΔARO value out of {0, Δ1−1, Δ2−2, 2} if the number of Type 2 DL subframes is more than one, where Δ1 or Δ2 could be one value of {0, −(M2−l−1)·Nc−l·Nc+1,−M2·(Nc−Nc−1),−l·(Nc+1−Nc),−(Nc+1−Nc),−M2·Nc,
-(NPUCCH(2)-NPUCCH(1)),M1·N4,c=0M1-1m=1NCFI,cNm},
and l(0≦l2) is the index of the Type 2 DL subframe, and M1 is the number of Type 1 DL subframes associated with the same first UL subframe for HARQ-ACK transmission and M2 is the number of Type 2 DL subframes, and NPUCCH(1) and NPUCCH(2) is PUCCH resource offset associated with PDSCH on Type 1 DL subframes and Type 2 DL subframes respectively for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRBDL·(NscRB·c−4)]/36┘}, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
21. The method of any of examples 12-20, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via enhanced physical downlink control channel (EPDCCH) or a EPDCCH indicating downlink semi persistent scheduling (SPS) release in a Type 1 or Type 2 sub-frame, the user equipment (UE) shall use:
nPUCCH,i(1)=nECCE,q+i1=0i-1NECCE,q,n-ki1+ΔARO+NPUCCH,q(e1)
if EPDCCH-physical resource block(PRB)-set q is configured for distributed transmission, or
nPUCCH,i(1)=nECCE,qNRBECCE,q·NRBECCE,q+i1=0i-1NECCE,q,n-ki1+n+ΔARO+NPUCCH,q(e1)
if EPDCCH-PRB-set q is configured for localised transmission
where nECCE,q is the number of the first ECCE (i.e. lowest ECCE index used to construct the EPDCCH) used for transmission of a corresponding downlink control information (DCI) assignment in EPDCCH-PRB-set q in subframe n−ki, NPUCCH,q(e1) for EPDCCH-PRB-set q is configured by the higher layer parameter pucch-ResourceStartOffset-r11, NRBECCE,q for EPDCCH-PRB-set q in subframe n−ki is given, and n′ is determined from the antenna port used for EPDCCH transmission in subframe n−ki, and ΔARO is the HARQ-ACK resource offset.
22. The method of example 21, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via EPDCCH or EPDCCH indicating downlink SPS release in a Type 1 or Type 2 sub-frame, the user equipment (UE) shall use:
nPUCCH,i(1)=nECCE,qLi+i1=0i-1(NECCE,q,n-ki1Li1)+ΔARO+NPUCCH,q(e1)ornPUCCH,i(1)=nECCE,qLi·NRBECCE,q·NRBECCE,q+i1=0i-1(NECCE,q,n-ki1Li1)+n+ΔARO+NPUCCH,q(e1)
where Li denotes the minimum supportable aggregation level in subframe i.
23. A machine readable storage device having instructions to cause a machine to:
receive from a base station via a transceiver, a physical downlink shared channel (PDSCH) transmission;
classify, via processing circuitry, downlink (DL) subframe types for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK); and
perform physical uplink control channel (PUCCH) resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception.
24. The machine readable storage device of example 23 wherein the DL subframe types comprise:
Type 1 DL subframes that are constructed by DL subframes that are associated with a first uplink (UL) subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1(SIB1) message; and
Type 2 DL subframes that are constructed by:
    • firstly identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration; and
    • if the Type 1 DL subframes are overlapped with the Type 2 DL subframes, the overlapping subframes between Type 1 and Type 2 DL subframes are further removed from the Type 2 DL subframes.
Although a few embodiments have been described in detail above, other modifications are possible. For example, the logic flows depicted in the figures do not require the particular order shown, or sequential order, to achieve desirable results. Other steps may be provided, or steps may be eliminated, from the described flows, and other components may be added to, or removed from, the described systems. Other embodiments may be within the scope of the following claims.


1. A device comprising:
a transceiver to receive, from a base station, a physical downlink shared channel (PDSCH) transmission; and
processing circuitry to:
classify downlink (DL) subframe types for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK), wherein the DL subframe types comprise at least Type 1 subframes that are constructed by DL subframes that are associated with the first uplink (UL) subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1(SIB1) message; and
perform physical uplink control channel (PUCCH) resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception
wherein the DL subframe types further comprise:
Type 2 DL subframes that are constructed by:
firstly identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration; and
when the Type 1 DL subframes are overlapped with the Type 2 DL subframes, the overlapping subframes between Type 1 and Type 2 DL subframes are further removed from the Type 2 DL subframes.
2. The device of claim 1, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 1 DL subframe based on:

n PUCCH,j (1)=(M 1 −j−1)·N c +j·N c+1 +n CCE,j +N PUCCH (1)
where NPUCCH (1) is a PUCCH resource offset associated with legacy PDCCH that is configured by higher layer for PUCCH resource mapping of Type 1 DL subframes, c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1, Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}, NRB DL refers to Downlink bandwidth configuration and Nsc RB refers to resource block size in the frequency domain that is expressed as a number of subcarriers, is a number of the first control channel element (CCE) used for transmission of the corresponding PDCCH in Type 1 DL subframe j, and j(0≦j1) is the index of the Type 1 DL subframe, and M1 is a number of Type 1 DL subframes.
3. The device of claim 2, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via PDCCH on the Type 1 DL subframe based on:

n PUCCH,j (1)=(M 1 −j−1)·N c +j·N c+1 +n CCE,j +N PUCCH (1)ARO
Where j(0≦j1) is the index of the Type 1 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected from predefined values based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
4. The device of claim 3, wherein the processing circuitry further performs determining the HARQ-ACK offset ΔARO for the Type 1 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} when the number of Type 1 DL subframes is one; and
selecting a value out of {0, Δ1−1, Δ2−2, 2} when the number of Type 1 DL subframes is more than one, where Δ1 or Δ2 could be one of {0, −(M,−j−1)·Nc−j·Nc+1, −M1·(Nc−Nc−1), −j·(Nc+1−Nc),−(Nc+1−Nc), −M1·Nc}, and j(0≦j1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1, Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}.
5. The device of claim 1, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 2 DL subframe based on higher-layer signaling or based on:
n PUCCH , l ( 1 ) = ( M 2 - l - 1 ) · N c + l · N c + 1 + n CCE , l + N PUCCH ( 2 ) or n PUCCH , l ( 1 ) = l · N 4 + n CCE , l + N PUCCH ( 2 ) or n PUCCH , l ( 1 ) = c = 0 l - 1 m = 1 N CFI , c N m + n CCE , l + N PUCCH ( 2 )
where NPUCCH (2) is PUCCH resource offset associated with PDSCH on Type 2 DL subframes for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}, NRB DL refers to downlink bandwidth configuration and Nsc RB refers to resource block size in the frequency domain that is expressed as a number of subcarriers. nCCE,l is a number of the first channel control element (CCE) used for transmission of the corresponding PDCCH in Type 2 DL subframe l, and l(0≦l2) is the index of a Type 2 DL subframe and M2 is a number of Type 2 DL subframes, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
6. The device of claim 5 wherein the PUCCH resource offset NPUCCH (2) are configured by higher layer signal in the device specific manner or a Cell-specific manner, or determined based on:

N PUCCH (2) =M 1 ·N 4
where M1 is a number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission, and N4 refers to PUCCH resources reserved for a Type 1 DL subframe and is calculated according to Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}.
7. The device of claim 5, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission on the Type 2 DL subframe via PDCCH based on:
n PUCCH , l ( 1 ) = ( M 2 - l - 1 ) · N c + l · N c + 1 + n CCE , l + N PUCCH ( 2 ) + Δ ARO or n PUCCH , l ( 1 ) = l · N 4 + n CCE , l + N PUCCH ( 2 ) + Δ ARO or n PUCCH , l ( 1 ) = c = 0 l - 1 m = 1 N CFI , c N m + n CCE , l + N PUCCH ( 2 ) + Δ ARO
where l(0≦l2) is the index of the Type 2 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
8. The device of claim 7, wherein the processing circuitry further performs determining the HARQ-ACK offset for the Type 2 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} when the number of Type 2 DL subframes is one;
selecting a ΔARO value out of {0, Δ1−1, Δ2−2, 2} when the number of Type 2 DL subframes is more than one, where Δ1 or Δ2 could be one value of {0, —(M2−l−1)·Nc−l·Nc+1,−M2·(Nc−Nc−1),−l·(Nc+1−Nc),−(Nc+1−Nc),−M2·Nc,
- ( N PUCCH ( 2 ) - N PUCCH ( 1 ) ) , M 1 · N 4 , c = 0 M 1 - 1 m = 1 N CFI , c N m } ,
and l(0≦l2) is the index of the Type 2 DL subframe, and M1 is the number of Type 1 DL subframes associated with the same first UL subframe for HARQ-ACK transmission and M2 is the number of Type 2 DL subframes, and NPUCCH (1) and NPUCCH (2) is PUCCH resource offset associated with PDSCH on Type 1 DL subframes and Type 2 DL subframes respectively for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
9. The device of claim 1, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via enhanced physical downlink control channel (EPDCCH) indicating downlink semi persistent scheduling (SPS) release in a Type 1 or Type 2 sub-frame, the device shall use:
n PUCCH , i ( 1 ) = n ECCE , q + i 1 = 0 i - 1 N ECCE , q , n - k i 1 + Δ ARO + N PUCCH , q ( e 1 )
when EPDCCH-physical resource block(PRB)-set q is configured for distributed transmission, or
n PUCCH , i ( 1 ) = n ECCE , q N RB ECCE , q · N RB ECCE , q + i 1 = 0 i - 1 N ECCE , q , n - k i 1 + n + Δ ARO + N PUCCH , q ( e 1 )
when EPDCCH-PRB-set q is configured for localised transmission where nECCE,q is the number of the first ECCE used for transmission of a corresponding downlink control information (DCI) assignment in EPDCCH-PRB-set q in subframe n−ki, NPUCCH,q (e1) for EPDCCH-PRB-set q is configured by the higher layer parameter pucch-ResourceStartOffset-r11, NRB ECCE,q for EPDCCH-PRB-set q in subframe n+ki is given, and n′ is determined from the antenna port used for EPDCCH transmission in subframe n−ki, and ΔARO is the HARQ-ACK resource offset.
10. The device of claim 9, wherein the processing circuitry further performs PUCCH resource mapping for PDSCH transmission indicated via EPDCCH indicating downlink SPS release in the Type 1 or Type 2 sub-frame, the device shall use:
n PUCCH , i ( 1 ) = n ECCE , q L i + i 1 = 0 i - 1 ( N ECCE , q , n - k i 1 L i 1 ) + Δ ARO + N PUCCH , q ( e 1 ) or n PUCCH , i ( 1 ) = n ECCE , q L i · N RB ECCE , q · N RB ECCE , q + i 1 = 0 i - 1 ( N ECCE , q , n - k i 1 L i 1 ) + n + Δ ARO + N PUCCH , q ( e 1 )
where Li denotes the minimum supportable aggregation level in subframe i.
11. A method comprising:
receiving from a base station via a transceiver, a physical downlink shared channel (PDSCH) transmission;
classifying, via processing circuitry, downlink (DL) subframe types for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK), wherein the DL subframe types comprise Type 1 subframes that are constructed by DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1(SIB1) message and wherein the DL subframe types further comprise Type 2 DL subframes that are constructed by identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration; and
performing physical uplink control channel (PUCCH) resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception;
wherein the Type 2 DL subframes are further constructed by:
determining that the Type 1 DL subframes are overlapped with the Type 2 DL subframes, and removing the overlapping subframes between Type 1 and Type 2 DL subframes from the Type 2 DL subframes.
12. The method of claim 11, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 1 DL subframe based on:

n PUCCH,j (1)=(M 1 −j−1)·N c +j·N c+1 +n CCE,j +N PUCCH (1)
where NPUCCH (1) is a PUCCH resource offset associated with legacy PDCCH that is configured by higher layer for PUCCH resource mapping of Type 1 DL subframes, c is selected from {0, 1, 2, 3} such that Nc≦nCCE,jc+1, Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}, NRB CL refers to downlink bandwidth configuration and Nsc RB refers to resource block size in the frequency domain that is expressed as a number of subcarriers, nCCE,j is a number of the first control channel element (CCE) used for transmission of the corresponding PDCCH in Type 1 DL subframe j, and j(0≦j1) is the index of the Type 1 DL subframe, and M1 is a number of Type 1 DL subframes.
13. The method of claim 12, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via PDCCH on the Type 1 DL subframe based on:

n PUCCH,j (1)=(M 1 −j−1)·N c +j·N c+1 +n CCE,j +N PUCCH (1)ARO
where j(0≦jI) is the index of the Type 1 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected from predefined values based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on a number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
14. The method of claim 13, further comprising determining the HARQ-ACK offset ΔARO for the Type 1 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} when the number of Type 1 DL subframes is one; and
selecting a value out of {0, Δ1−1, Δ2−2, 2} when the number of Type 1 DL subframes is more than one, where Δ1 or Δ2 could be one of {0, −(M1−j−1)·Nc−j·Nc+1, −M1·(Nc−Nc−1), −j·(Nc+1−Nc),−(Nc+1−Nc), −M1·Nc}, and j(0≦j1) is the index of the Type 1 DL subframe, and M1 is the number of Type 1 DL subframes, and c is selected from {0, 1, 2, 3} such that c≦nCCE,jc+1,Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}.
15. The method of claim 11, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via Physical Downlink Control Channel (PDCCH) on a Type 2 DL subframe based on higher-layer signaling or based on:
n PUCCH , l ( 1 ) = ( M 2 - l - 1 ) · N c + l · N c + 1 + n CCE , l + N PUCCH ( 2 ) or n PUCCH , l ( 1 ) = l · N 4 + n CCE , l + N PUCCH ( 2 ) or n PUCCH , l ( 1 ) = c = 0 l - 1 m = 1 N CFI , c N m + n CCE , l + N PUCCH ( 2 )
where NPUCCH (2) is PUCCH resource offset associated with PDSCH on Type 2 DL subframes for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[, NRB DL·(Nsc RD·c−4)]/36┘}, NRB DL refers to downlink bandwidth configuration and Nsc RB refers to resource block size in the frequency domain that is expressed as a number of subcarriers. nCCE,l is a number of the first channel control element (CCE) used for transmission of the corresponding PDCCH in Type 2 DL subframe l, and 1(0≦l2) is the index of a Type 2 DL subframe and M2 is a number of Type 2 DL subframes, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
16. The method of claim 15 wherein the PUCCH resource offset NPUCCH (2) are configured by higher layer signal in a user equipment specific manner or a Cell-specific manner, or determined based on:

N PUCCH (2) =M 1 ·N 4
where M1 is a number of Type 1 DL subframes associated with the first UL subframe for HARQ-ACK transmission, and N4 refers to PUCCH resources reserved for a Type 1 DL subframe and is calculated according to Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}.
17. The method of claim 15, further comprising performing PUCCH resource mapping for PDSCH transmission on the Type 2 DL subframe via PDCCH based on:
n PUCCH , l ( 1 ) = ( M 2 - l - 1 ) · N c + l · N c + 1 + n CCE , l + N PUCCH ( 2 ) + Δ ARO or n PUCCH , l ( 1 ) = l · N 4 + n CCE , l + N PUCCH ( 2 ) + Δ ARO or n PUCCH , l ( 1 ) = c = 0 l - 1 m = 1 N CFI , c N m + n CCE , l + N PUCCH ( 2 ) + Δ ARO
where l(0≦l2) is the index of the Type 2 DL subframe, and ΔARO refers to HARQ-ACK resource offset value that is selected based on 2-bits HARQ-ACK resource offset field in a downlink control information (DCI) format depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission.
18. The method of claim 17, further comprising determining the HARQ-ACK offset for the Type 2 DL subframe based on 2-bits HARQ-ACK resource offset field in the DCI format of the corresponding PDCCH depending on the number of Type 2 DL subframes associated with the first UL subframe for HARQ-ACK transmission:
selecting a ΔARO value out of {0,−1,−2, 2} when the number of Type 2 DL subframes is one;
selecting a ΔARO value out of {0, Δ1−1, Δ2−2, 2} when the number of Type 2 DL subframes is more than one, where Δ1 or Δ2 could be one value of
- ( N PUCCH ( 2 ) - N PUCCH ( 1 ) ) , M 1 · N 4 , c = 0 M 1 - 1 m = 1 N CFI , c N m } ,
and l(0≦l2) is the index of the Type 2 DL subframe, and M1 is the number of Type 1 DL subframes associated with the same first UL subframe for HARQ-ACK transmission and M2 is the number of Type 2 DL subframes, and NPUCCH (1) and NPUCCH (2) is PUCCH resource offset associated with PDSCH on Type 1 DL subframes and Type 2 DL subframes respectively for PUCCH resource mapping, and c is selected from {0, 1, 2, 3} such that is selected from {0, 1, 2, 3} such that Nc≦nCCE,lc+1, Nc=max{0,└[NRB DL·(Nsc RB·c−4)]/36┘}, and NCFI,c is detected Control Formal Indicator (CFI) value carried on Physical Control Format Indicator Channel (PCFICH) channel in Type 2 subframe c.
19. The method of claim 11, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via enhanced physical downlink control channel (EPDCCH) indicating downlink semi persistent scheduling (SPS) release in a Type 1 or Type 2 sub-frame, a user equipment (UE) shall use:
n PUCCH , i ( 1 ) = n ECCE , q + i 1 = 0 i - 1 N ECCE , q , n - k i 1 + Δ ARO + N PUCCH , q ( e 1 )
when EPDCCH-physical resource block(PRB)-set q is configured for distributed transmission, or
n PUCCH , i ( 1 ) = n ECCE , q N RB ECCE , q · N RB ECCE , q + i 1 = 0 i - 1 N ECCE , q , n - k i 1 + n + Δ ARO + N PUCCH , q ( e 1 )
when EPDCCH-PRB-set q is configured for localised transmission where nECCE,q is the number of the first ECCE used for transmission of a corresponding downlink control information (DCI) assignment in EPDCCH-PRB-set q in subframe n−ki, NPUCCH,q (e1) for EPDCCH-PRB-set q is configured by the higher layer parameter pucch-ResourceStartOffset-r11, NRB ECCE,q for EPDCCH-PRB-set q in subframe n−ki is given, and n′ is determined from the antenna port used for EPDCCH transmission in subframe n−ki, and ΔARO is the HARQ-ACK resource offset.
20. The method of claim 19, further comprising performing PUCCH resource mapping for PDSCH transmission indicated via EPDCCH or EPDCCH indicating downlink SPS release in the Type 1 or Type 2 sub-frame, the user equipment (UE) shall use:
n PUCCH , i ( 1 ) = n ECCE , q L i + i 1 = 0 i - 1 ( N ECCE , q , n - k i 1 L i 1 ) + Δ ARO + N PUCCH , q ( e 1 ) or n PUCCH , i ( 1 ) = n ECCE , q L i · N RB ECCE , q · N RB ECCE , q + i 1 = 0 i - 1 ( N ECCE , q , n - k i 1 L i 1 ) + n + Δ ARO + N PUCCH , q ( e 1 )
where Li denotes the minimum supportable aggregation level in subframe i.
21. A non-transitory machine readable storage device having instructions to cause a machine to:
receive from a base station via a transceiver, a physical downlink shared channel (PDSCH) transmission;
classify, via processing circuitry, downlink (DL) subframe types for a set of DL subframes associated with a first uplink (UL) subframe for transmission of a hybrid automatic report request acknowledgment (HARQ-ACK); and
perform physical uplink control channel (PUCCH) resources mapping based on the classified DL subframe Types for an acknowledgement transmission associated with PDSCH transmission reception;
wherein the DL subframe types comprise:
Type 1 DL subframes that are constructed by DL subframes that are associated with the first uplink (UL) subframe for transmission of HARQ-ACK according to a time division duplex (TDD) UL/DL configuration indicated in a system information block Type 1(SIB1) message; and
Type 2 DL subframes that are constructed by:
firstly identifying DL subframes that are associated with the first UL subframe for transmission of HARQ-ACK according to a higher layer configured DL-reference UL/DL configuration; and
when the Type 1 DL subframes are overlapped with the Type 2 DL subframes, the overlapping subframes between Type 1 and Type 2 DL subframes are further removed from the Type 2 DL subframes.
22. The machine readable storage device of claim 21 further having instructions to cause a machine to:
perform PUCCH resource mapping for PDSCH transmission indicated via enhanced physical downlink control channel (EPDCCH) indicating downlink semi persistent scheduling (SPS) release in a Type 1 DL subframe or a Type 2 DL sub-frame, the machine shall use:
n PUCCH , i ( 1 ) = n ECCE , q + i 1 = 0 i - 1 N ECCE , q , n - k i 1 + Δ ARO + N PUCCH , q ( e 1 )
when EPDCCH-physical resource block(PRB)-set q is configured for distributed transmission, or
n PUCCH , i ( 1 ) = n ECCE , q N RB ECCE , q · N RB ECCE , q + i 1 = 0 i - 1 N ECCE , q , n - k i 1 + n + Δ ARO + N PUCCH , q ( e 1 )
when EPDCCH-PRB-set q is configured for localised transmission where nECCE,q is the number of the first ECCE used for transmission of a corresponding downlink control information (DCI) assignment in EPDCCH-PRB-set q in subframe n−ki, NPUCCH,q (e1) for EPDCCH-PRB-set q is configured by the higher layer parameter pucch-ResourceStartOffset-r11, NRB ECCE,q for EPDCCH-PRB-set q in subframe n−ki is given, and n′ is determined from the antenna port used for EPDCCH transmission in subframe n−ki, and ΔARO is the HARQ-ACK resource offset; and
perform PUCCH resource mapping for PDSCH transmission indicated via EPDCCH or EPDCCH indicating downlink SPS release in the Type 1 or Type 2 sub-frame, the machine shall use:
n PUCCH , i ( 1 ) = n ECCE , q L i + i 1 = 0 i - 1 ( N ECCE , q , n - k i 1 L i 1 ) + Δ ARO + N PUCCH , q ( e 1 ) or n PUCCH , i ( 1 ) = n ECCE , q L i · N RB ECCE , q · N RB ECCE , q + i 1 = 0 i - 1 ( N ECCE , q , n - k i 1 L i 1 ) + n + Δ ARO + N PUCCH , q ( e 1 )
where Li denotes the minimum supportable aggregation level in subframe i.

 

 

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the method and the device for supporting group handover are disclosed. the method supporting group handover is provided, which is applied to ue in communication with network via a rn, including: a base station s-denb switching rn to a base station t-denb; and said s-denb switching ue served by said rn to said t-denb; wherein the mme serving said rn and the mme serving ue served by said rn are the same. another embodiment of the present invention further provides a base station supporting group handover, the technical scheme set forth in the present invention can reduce unnecessary signaling procedure, the possibility of network congestion, and can reduce the signaling procedure of handover when group handover occurs, so as to reduce the failure of the handover process and ensure the continuity of service.
Base station // US9444605
a transmitting unit of a base station transmits data to a radio terminal with a plurality of frequency bands. a transfer unit of the base station transfers a part of data to be transmitted by the transmitting unit to another base station, so that data transmission to the radio terminal is performed in the other base station. a receiving unit of the other base station receives data transferred by the transfer unit of the base station. a transmitting unit of the other base station transmits data received by the receiving unit to the radio terminal.
certain aspects of the present disclosure provide a method for wireless communications. the method generally includes allocating resources of a backhaul link between a donor base station and a relay base station to the relay station for communicating with the donor base station and transmitting a control channel indicating the allocated resources to the relay base station, wherein the control channel is transmitted on a subset of physical resource blocks of subframes assigned for downlink communications on the backhaul link.
briefly, in accordance with one of more embodiments, a fixed device synchronizes with a downlink channel of a network, acquires a master information block including a last system update time; and executes cell selection without acquiring other system information if the last system update time is before the last system access time. furthermore, the fixed device may listen only for system information block messages that it needs, and ignore other system information blocks. a bitmap may indicate which system information block messages should be listed to for fixed devices, and which may be ignored. in some embodiments, one or more system information blocks may be designated for fixed devices.
Hybrid mesh network // US9432990
an access point is configured to pair with other access points in a network. the access point includes at least two interfaces configured to interface to other access points over a link layer therein using heterogeneous backhaul access technologies; and a memory having machine executable code, therein that, when executed by a processor, cause the at least two interfaces to pair with one or more of the other access points using configuration information stored within the memory.
a method and apparatus for transmitting a list of bearers in a wireless communication system is provided. a first enodeb of an energy saving cell configures a list of minimum required evolved-umts terrestrial radio access network radio access bearers or required e-rabs, and transmits the configured list of minimum required e-rabs or a required e-rabs to a second enb of a compensation cell. upon receiving the configured list of minimum required e-rabs, the second enb checks whether the compensation cell is able to provide all e-rabs included in the list of minimum required e-rabs or not. upon receiving the configured list of required e-rabs, the second enb checks whether the compensation cell is able to provide e-rabs included in the list of required e-rabs or not.
the trailer for a children's vehicle is characterized by a tub for accommodating spreading material, a drive casing on which the tub is positioned, a drive axle which is rotatably supported in the drive casing and is connected to a drive wheel, preferably a drive gear, for rotation therewith, a gearing, preferably a train of gears in the drive casing, which meshes with the drive wheel, and a spreading disc which is rotatably coupled with the gearing, wherein the tub comprises a bottom with an exit opening for the spreading material that is arranged above the spreading disc, so that exiting spreading material falls onto the spreading disc.
a mobile communication system includes a radio base stations and further includes a determination unit for determining, on the basis of attribute information of the radio base stations, whether to establish a logical interface between the radio base stations. since it is arranged that the determination unit determines, on the basis of attribute information of the radio base stations, whether to establish a logical interface between the radio base stations, the establishment of unnecessary logical interface can be suppressed.
systems, methods, and device for adjusting an operation time of a radio link failure timer are disclosed herein. user equipment may be configured to communicatively couple to an evolved universal terrestrial radio access network . the ue use different radio link failure timer parameters depending on the speed of the ue. the radio link failure timer may run for a longer time for rapidly moving ues and run for a shorter time for slowly moving ues. in an embodiment, the ue may scale the radio link failure timer by a scaling factor. in another embodiment, the ue may include multiple radio link failure timers for different speeds. the radio link failure timer parameters for each speed may be specified by the e-utran in a one-to-one communication. the e-utran may determine which parameters to use for each ue based on characteristics of the ue.
a radio communication system is provided with a high-power base station, a radio terminal which is located within a macro cell formed by the high-power base station, and a low-power base station which has a lower transmission output power than the high-power base station. the low-power base station sends, to the high-power base station, control information needed for the radio communication between the radio terminal and the low-power base station; the high-power base station sends, to the radio terminal, the control information received from the low-power base station; and the radio terminal performs radio communication with the low-power base station by using the control information received from the high-power base station.
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