WO2011122874A2 - Indexing resources for transmission of acknowledgement signals in multi-cell tdd communication systems - Google Patents
Indexing resources for transmission of acknowledgement signals in multi-cell tdd communication systems Download PDFInfo
- Publication number
- WO2011122874A2 WO2011122874A2 PCT/KR2011/002224 KR2011002224W WO2011122874A2 WO 2011122874 A2 WO2011122874 A2 WO 2011122874A2 KR 2011002224 W KR2011002224 W KR 2011002224W WO 2011122874 A2 WO2011122874 A2 WO 2011122874A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- harq
- sas
- resource
- acknowledgement signal
- ack
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1861—Physical mapping arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
- H04L5/1415—Two-way operation using the same type of signal, i.e. duplex using control lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
Definitions
- the present invention is directed generally to wireless communication systems and, more specifically, to the transmission of acknowledgement signals in an UpLink (UL) of a communication system using time division multiplexing (TDM).
- UL UpLink
- TDM time division multiplexing
- a communication system includes a DownLink (DL), conveying transmissions of signals from a Base Station (BS or NodeB) to User Equipments (UEs), and the UL, conveying transmissions of signals from UEs to the NodeB.
- DL DownLink
- UE User Equipment
- a UE also commonly referred to as a terminal or a mobile station, may be fixed or mobile, such as a wireless device, a cellular phone, a personal computer device, etc.
- a NodeB is generally a fixed station and may also be referred to as a Base Transceiver System (BTS), an access point, or some other similar terminology.
- BTS Base Transceiver System
- the UL supports transmissions of data signals carrying information content, control signals providing information associated with the transmission of data signals in the DL, and Reference Signals (RSs), which are also commonly referred to as pilot signals.
- the DL also supports transmissions of data signals, control signals, and RSs.
- UL data signals are conveyed through a Physical Uplink Shared CHannel (PUSCH).
- DL data channels are conveyed through a Physical Downlink Shared CHannel (PDSCH).
- PDSCH Physical Downlink Shared CHannel
- a UE conveys Uplink Control Information (UCI) through a Physical Uplink Control CHannel (PUCCH).
- UCI Uplink Control Information
- PUCCH Physical Uplink Control CHannel
- a UE may convey UCI together with data information through the PUSCH.
- DL control signals may be of broadcast or UE-specific nature.
- UE-specific control signals can be used, for example, to provide Scheduling Assignments (SAs) to a UE for PDSCH reception (DL SAs) or PUSCH transmission (UL SAs).
- SAs Scheduling Assignments
- DL SAs PDSCH reception
- UL SAs PUSCH transmission
- the NodeB transmits an SA using a Physical Downlink Control CHannel (PDCCH).
- PDCH Physical Downlink Control CHannel
- UL control signals include ACKnowledgement signals associated with a Hybrid Automatic Repeat reQuest (HARQ) process (HARQ-ACK signals) and are typically transmitted in response to PDSCH receptions.
- HARQ Hybrid Automatic Repeat reQuest
- FIG. 1 illustrates a conventional PUCCH structure for HARQ-ACK signal transmission in a Transmission Time Interval (TTI), which consists of one sub-frame.
- TTI Transmission Time Interval
- a sub-frame 110 includes two slots 120.
- Each slot 120 includes N UL SYMb symbols for transmitting HARQ-ACK signals 130 and RSs 140, which enable coherent demodulation of the HARQ-ACK signals.
- Each symbol further includes a Cyclic Prefix (CP) to mitigate interference due to channel propagation effects.
- the transmission in the first slot may be at a different part of an operating BandWidth (BW) than in the second slot in order to provide frequency diversity.
- the operating BW includes frequency resource units that are referred to as Physical Resource Blocks (PRBs).
- PRB Physical Resource Blocks
- Each PRB includes N RB SC sub-carriers, or Resource Elements (REs), and a UE transmits HARQ-ACK signals and RSs over one PRB 150.
- PRBs Physical Resource Blocks
- FIG. 2 illustrates the HARQ-ACK signal transmission in a sub-frame slot for the PUCCH structure in FIG. 1.
- b HARQ-ACK bits 210 modulate a Constant Amplitude Zero Auto-Correlation (CAZAC) sequence 230 in modulators 220, for example, using Binary Phase Shift Keying (BPSK) or Quadrature Phase Shift Keying (QPSK) modulation.
- CAZAC Constant Amplitude Zero Auto-Correlation
- BPSK Binary Phase Shift Keying
- QPSK Quadrature Phase Shift Keying
- IFFT Inverse Fast Fourier Transform
- Each RS is transmitted through the non-modulated CAZAC sequence after performing an IFFT 240.
- FIG. 3 illustrates a transmitter block diagram for the PUCCH structure in FIG. 1.
- the HARQ-ACK information modulates a CAZAC sequence 310 which, without modulation, is also used for the RS.
- a controller 320 selects the first and second PRBs for transmission of the CAZAC sequence in the first and second slots of the PUCCH sub-frame and controls a sub-carrier mapper 330.
- the sub-carrier mapper 330 maps the first and second PRBs to the CAZAC sequence according to the control signal from the controller 320, respectively, an IFFT 340 performs IFFT, and a Cyclic Shift (CS) mapper 350 cyclically shifts the output of the IFFT 340.
- CS Cyclic Shift
- the CP inserter 360 inserts a CP to the signal output by the CS MAPPER 350, and a filter 370 performs time windowing to generate a transmitted signal 380.
- a UE is assumed to apply zero padding in REs that are not used for its signal transmission and in guard REs (not shown).
- additional transmitter circuitry such as digital-to-analog converter, analog filters, amplifiers, and transmitter antennas as they are known in the art, are not shown.
- FIG. 4 illustrates a receiver block diagram for the PUCCH structure in FIG. 1.
- an antenna receives an analog signal and after passing through further processing units, e.g., filters, amplifiers, frequency down-converters, and analog-to-digital converters (not shown) a digital received signal 410 is then filtered by a filter 420 and the CP is removed by a CP remover 430. Subsequently, the CS is restored by CS demapper 440, a Fast Fourier Transform (FFT) is applied by FFT 450, a controller 465 selects the first and second PRBs of the signal transmission in the first slot and second slots, respectively, and controls a sub-carrier demapper 460.
- FFT Fast Fourier Transform
- the sub-carrier demapper 460 demaps the first and second PRBs according to the control signal from the controller 465, and the signal is correlated by multiplier 470 with a replica of the CAZAC sequence 480.
- the output 490 can then be passed to a channel estimation unit, such as a time-frequency interpolator, for an RS, or to a detection unit for the CAZAC sequence modulated by HARQ-ACK bits.
- Different CSs of the same CAZAC sequence provide orthogonal CAZAC sequences and can be allocated to different UEs to achieve orthogonal multiplexing of HARQ-ACK signal transmissions in the same PRB. If Ts is the symbol duration, a number of such CSs is approximately , where D is the channel propagation delay spread, and is the floor function which rounds a number to its immediately lower integer.
- orthogonal multiplexing can also be achieved in the time domain using Orthogonal Covering Codes (OCC).
- OCC Orthogonal Covering Codes
- the HARQ-ACK signal can be modulated by a length-4 OCC, such as a Walsh-Hadamard (WH) OCC, while the RS can be modulated by a length-3 OCC, such as a DFT OCC (not shown).
- WH OCCs ⁇ W 0 , W 1 , W 2 , W 3 ⁇ , and DFT OCCs, ⁇ D 0 , D 1 , D 2 ⁇ , are respectively and .
- Table 1 presents a mapping for the PUCCH resource n PUCCH used for HARQ-ACK signal and RS transmission to an OCC n oc and a CS ⁇ assuming 6 CS per symbol and a length-3 OCC. If all resources within a reference PUCCH PRB are used, the resources in the next PRB immediately following the reference PUCCH PRB can be used.
- the SAs in the PDCCH are transmitted in elementary units that are referred to as Control Channel Elements (CCEs).
- CCEs Control Channel Elements
- OFDM Orthogonal Frequency Division Multiplexing
- Each CCE includes a number of REs and the UEs are informed of the total number of CCEs, N CCE , in a DL sub-frame through the transmission of a Physical Control Format Indicator CHannel (PCFICH) by the NodeB.
- PCFICH Physical Control Format Indicator CHannel
- the PCFICH indicates the number of OFDM symbols used for the PDCCH transmission in the respective DL sub-frame.
- n PUCCH n CCE +N PUCCH
- n CCE the first CCE of the respective DL SA
- N PUCCH is an offset configured by higher layers, such as a Radio Resource Control (RRC) layer, and can be informed to UEs through a DL broadcast channel.
- RRC Radio Resource Control
- a one-to-one mapping can exist between the PUCCH resources (PRB, CS, OCC) for HARQ-ACK signal transmission and the CCEs of the respective DL SA transmission. For example, if a single resource is used for HARQ-ACK signal transmission, the single resourcemay correspond to the CCE with the lowest index for the respective DL SA.
- FIG. 5 illustrates a transmission of DL SAs using CCEs in respective PDCCHs.
- a DL SA for UE1 uses CCEs 501, 502, 503, and 504, a DL SA for UE2 uses CCEs 511 and 512, a DL SA for UE3 uses CCEs 521 and 522, and a DL SA for UE4 uses CCE 531.
- each DL SA is transmitted in a PDCCH 550.
- HARQ-ACK information may be conveyed by the modulated HARQ-ACK signal and also by the selected PUCCH resource.
- multiple DL sub-frames may be linked to a single UL sub-frame in the sense that HARQ-ACK signal transmissions from UEs in response to DL SA receptions in these multiple DL sub-frames will occur in the same UL sub-frame.
- This set of DL sub-frames will be referred to as bundling window.
- the PUCCH resource indexing for HARQ-ACK signal transmission may exploit possible variations in the PDCCH size among DL sub-frames.
- a PUCCH resource indexing for HARQ-ACK signal transmission can be as described below.
- the UE first selects a value providing and uses as the PUCCH resource for HARQ-ACK signal transmission in response to DL SA reception in DL sub-frame m, where , is the number of PRBs in the DL operating BW, and a CCE includes 36 REs.
- the above indexing is based on interleaving the blocks of PUCCH resources for HARQ-ACK signal transmissions in an UL sub-frame that are linked to blocks of CCEs located in the first, second, or third PDCCH OFDM symbol in respective DL sub-frames. Interleaving, instead of serial concatenation of HARQ-ACK resources assuming the maximum PDCCH size in each DL sub-frame, allows for savings in the PUCCH resources for HARQ-ACK signal transmissions, when the PDCCH size in some DL sub-frames is not the maximum.
- FIG. 6 illustrates block interleaving of PUCCH resources when there are 3 DL sub-frames in a bundling window.
- the PDCCH size is one OFDM symbol in the first DL sub-frame 610, three OFDM symbols in the second DL sub-frame 620, and two OFDM symbols in the third DL sub-frame 630.
- a total of 3N 1 PUCCH resources 640 are first reserved for the first PDCCH OFDM symbol for each of the three DL sub-frames 640A, 640B, and 640C.
- a total of 2N 2 PUCCH resources 650 are reserved for the second PDCCH OFDM symbol of the second 650B and third 650C DL sub-frames.
- N 3 PUCCH resources 660 are reserved for the third PDCCH OFDM symbol of the second 660B DL sub-frame.
- aggregation of multiple Component Carriers is considered in both the DL and the UL to provide higher operating BWs.
- Carrier Aggregation CA of three 20 MHz CCs can be used.
- a PDSCH reception in a DL CC is scheduled by a respective DL SA that is transmitted as illustrated in FIG. 5.
- the transmission of HARQ-ACK signals associated with PDSCH receptions in multiple DL CCs can be in the PUCCH of a single UL CC, which will be referred to as a UL Primary CC (UL PCC) and can be UE-specific.
- UL PCC UL Primary CC
- Separate resources can be RRC configured in the UL PCC for HARQ-ACK signal transmissions in response to DL SA receptions in multiple DL CCs.
- FIG. 7 is a diagram illustrating resource allocation in an UL CC for HARQ-ACK signal transmissions corresponding to DL SAs received in 3 DL CCs.
- the resources for HARQ-ACK signal transmission corresponding to DL SA receptions in DL CC1, DL CC2, and DL CC3 are respectively in a first set 750, second set 760, and third set 770 of PUCCH resources.
- the resulting overhead can be substantial.
- a UE receiving PDCCH in a subset of DL CCs may not know the PDCCH size in other DL CCs, it may not know the number of respective PUCCH resources. Consequently, the maximum number of PUCCH resources, corresponding to the maximum number of PDCCH CCEs in each DL CC, is assumed. If less than the maximum of PUCCH resources are used in a sub-frame, the remaining PUCCH resources cannot typically be utilized for other transmissions, resulting in BW waste.
- another PUCCH structure for HARQ-ACK signal transmission in response to DL SA receptions in multiple DL sub-frames (TDD) and/or in multiple DL CCs (CA) jointly codes the O HARQ-ACK HARQ-ACK information bits using, for example, a block code such as the (32, O HARQ-ACK ) Reed-Mueller (RM) code.
- a block code such as the (32, O HARQ-ACK ) Reed-Mueller (RM) code.
- FIG. 8 is a diagram illustrating a conventional PUCCH structure in one sub-frame slot using DFT Spread OFDM (DFT-S-OFDM) for the HARQ-ACK signal transmission.
- DFT-S-OFDM DFT Spread OFDM
- a set of the same HARQ-ACK bits 810 is multiplied by a multiplier 820 with elements of an OCC 830 and is subsequently DFT precoded 840.
- the OCC has a length of 5 and can be either ⁇ 1, 1, 1, 1, 1 ⁇ , or ⁇ 1, exp(j2 ⁇ /5), exp(j4 ⁇ /5), exp(j6 ⁇ /5), exp(j8 ⁇ /5) ⁇ , or ⁇ 1, exp(j4 ⁇ /5), exp(j8 ⁇ /5), exp(j2 ⁇ /5), exp(j6 ⁇ /5) ⁇ , or ⁇ 1, exp(j6 ⁇ /5), exp(j2 ⁇ /5), exp(j8 ⁇ /5), exp(j4 ⁇ /5) ⁇ , or ⁇ 1, exp(j8 ⁇ /5), exp(j6 ⁇ /5), exp(j4 ⁇ /5), exp(j2 ⁇ /5) ⁇ .
- the output is passed through an IFFT 850 and is then mapped to a DFT-S-OFDM symbol 860.
- DFT-S-OFDM symbol 860 As the previous operations are linear, their relative order may be inter-changed.
- RSs are also transmitted in each slot using a CAZAC sequence 870, as previously described, to enable coherent demodulation of the HARQ-ACK signals.
- FIG. 9 illustrates a UE transmitter block diagram for the PUCCH structure in FIG. 8.
- HARQ-ACK bits 905 are encoded and modulated by an encoder/modulator 910 and then multiplied by multiplier 920 with an element of the OCC 925 for the respective DFT-S-OFDM symbol.
- controller 950 selects the REs of the assigned PUCCH PRB and the sub-carrier mapper 940 maps the REs according to the control signal from the controller 950.
- IFFT is performed by IFFT 960 and a CP inserter 970 and a filter 980 insert a CP and filter the transmitted signal 990, respectively.
- FIG. 10 illustrates a NodeB receiver block diagram for the PUCCH structure in FIG. 8.
- a digital signal 1010 is filtered by filter 1020 and the CP is removed by CP remover 1030.
- an FFT 1040 applies FFT, a controller 1055 selects the REs used by the UE transmitter and the sub-carrier demapper 1050 demaps the REs according to the control signal from the controller 1055.
- IDFT 1060 applies an IDFT, a multiplier 1070 multiples the output from the IDFT 1060 with an OCC element 1075 for the respective DFT-S-OFDM symbol, an adder 1080 sums the outputs for the DFT-S-OFDM symbols conveying HARQ-ACK signals over each slot, and a demodulator/decoder 1090 demodulates and decodes the summed HARQ-ACK signals over both sub-frame slots to obtain the transmitted HARQ-ACK bits 1095.
- Well known receiver functionalities such as channel estimation, demodulation, and decoding are not shown for brevity.
- the PUCCH structure illustrated in FIG. 8 can support HARQ-ACK payloads larger than a few bits, it still requires large PUCCH overhead as HARQ-ACK signal transmissions from at most 5 UEs (as determined by the OCC length) can be accommodated per PRB.
- the HARQ-ACK signal transmission resource for the PUCCH structure illustrated in FIG. 8 cannot be implicitly determined from PDCCH CCEs and is configured for each UE through RRC signaling.
- the provisioned PUCCH resources accommodate a unique resource for each UE, the resulting overhead can be substantial, as unused resources cannot typically be utilized for other transmissions, resulting in BW waste.
- HARQ-ACK resource compression may be applied to reduce PUCCH overhead in a UL PCC.
- HARQ-ACK resource compression reduces the probability of resource waste, NodeB scheduler restrictions are required as collisions of HARQ-ACK resources should be avoided for UEs with shared HARQ-ACK resources.
- the present invention has been designed to solve at least the aforementioned limitations and problems in the prior art and provide at least the advantages described below.
- An aspect of the present invention is to provide methods and apparatus for a UE to transmit an HARQ-ACK signal in a UL CC, in response to the reception of multiple DL SAs transmitted by a NodeB in multiple DL CCs or multiple DL sub-frames.
- the UL CC and a first DL CC establish the communication link when the UE is configured communication over a single UL CC and a single DL CC.
- the UE determines a first set of resources for the HARQ-ACK signal transmission in the PUCCH, when all DL SAs are received in the first DL CC, and determines a second set of resources for the HARQ-ACK signal transmission in the PUCCH, when at least one DL SA is received in a DL CC other than the first DL CC.
- the UE determines a resource for an HARQ-ACK signal transmission in a PUCCH using a Downlink Assignment Index (DAI) Information Element (IE) included in each DL SA for indicating a DL SA number and a Transmission Power Control (TPC) IE included in each DL SA for adjusting the acknowledgement signal transmission power.
- DAI Downlink Assignment Index
- TPC Transmission Power Control
- the role of these IEs is reinterpreted so that the power adjustment for the HARQ-ACK signal transmission is determined from the TPC IE value in the DL SA associated with the first DL CC having DAI IE value equal to one and the resource for the HARQ-ACK signal transmission is determined from the TPC IE value in each DL SA associated with the first DL CC having DAI IE value larger than one and from the TPC IE value in each DL SA associated with a DL CC other than the first DL CC.
- FIG. 1 is a diagram illustrating a conventional PUCCH sub-frame structure for an HARQ-ACK signal transmission
- FIG. 2 is a diagram illustrating an HARQ-ACK signal transmission in a sub-frame slot for a PUCCH structure as illustrated in FIG. 1;
- FIG. 3 is a block diagram illustrating a transmitter for a PUCCH structure as illustrated in FIG. 1;
- FIG. 4 is a block diagram illustrating a receiver for a PUCCH structure as illustrated in FIG. 1;
- FIG. 5 is a diagram illustrating a transmission of a DL SA using CCEs in a PDCCH
- FIG. 6 is a diagram illustrating block interleaving of PUCCH resources assuming a Time Division Duplex system with 3 DL sub-frames in a bundling window;
- FIG. 7 is a diagram illustrating resource allocation in a UL CC for HARQ-ACK signal transmissions corresponding to DL SAs received in 3 DL CCs;
- FIG. 8 is a diagram illustrating a conventional PUCCH structure in one sub-frame slot using DFT Spread OFDM for the HARQ-ACK signal transmission
- FIG. 9 is a block diagram illustrating a transmitter for a PUCCH structure as illustrated in FIG. 8;
- FIG. 10 is a block diagram illustrating a receiver for a PUCCH structure as illustrated in FIG. 8;
- FIG. 11 is a diagram illustrating a transmission of 3 DL SAs in a DL PCC and a mapping of the respective 3 resources available for a transmission of an HARQ-ACK signal, according to an embodiment of the present invention
- FIG. 12 is a diagram illustrating a restriction that UEs having a same DL PCC are activated (and deactivated) DL SCCs in a same order, according to an embodiment of the present invention
- FIG. 13 is a diagram illustrating an ordering of activation and deactivation for 5 DL CCs depending on the DL CC used for the transmission of the respective DL SAs, according to an embodiment of the present invention
- FIG. 14 is a diagram illustrating use of a TPC IE in a first ordered DL SA, as determined by a DAI IE value, to provide a TPC command for an HARQ-ACK signal transmission and use of a TPC IE in remaining DL SAs to provide an index for a respective resource for the HARQ-ACK signal transmission, according to an embodiment of the present invention
- FIG. 15 is a block diagram illustrating a transmitter for a PUCCH structure where a resource for an HARQ-ACK signal transmission is indexed by a TPC IE value in a DL SA, other than a first ordered DL SA, as determined from a value of a DAI IE, according to an embodiment of the present invention
- FIG. 16 is a block diagram illustrating a receiver for a PUCCH structure where a resource for an HARQ-ACK signal reception is indexed by a TPC IE value in a DL SA, other than a first ordered DL SA, as determined from a value of a DAI IE, according to an embodiment of the present invention.
- FIG. 17 is a diagram illustrating a resource mapping for an HARQ-ACK signal transmission for 2 DL CCs, each transmitting its own DL SA, using a DL CC specific offset, according to an embodiment of the present invention.
- the present invention is described for a communication system using DFT-S-OFDM or Single-Carrier Frequency Division Multiple Access (SC-FDMA) transmission, it also generally applicable to other Frequency Division Multiplexing (FDM) transmissions including OFDM.
- FDM Frequency Division Multiplexing
- Methods and apparatuses are described for a UE to determine the PUCCH resource for HARQ-ACK signal transmission, in response to multiple DL SA receptions in multiple DL CCs or in multiple DL sub-frames.
- PUCCH resources are indexed for HARQ-ACK signal transmission in a UL PCC (herein referred to as HARQ-ACK resources).
- the HARQ-ACK resources may be RRC-configured to a UE (for example, using the PUCCH structure as illustrated in FIG. 8) or may be dynamically determined by a UE using the indexes of the CCEs for the respective DL SAs (for example, using the PUCCH structure as illustrated in FIG. 1).
- the HARQ-ACK signal transmission in the PUCCH is assumed to be based on the following two principles:
- a single UE-specific UL CC (UL PCC) is RRC-configured for the HARQ-ACK transmission in the PUCCH for a UE configured multiple DL CCs.
- the HARQ-ACK resource is implicitly derived from the CCEs of the respective DL SA, as it was previously described.
- RRC-configured CCs can be activated or deactivated, for example by medium access control signaling.
- activation of a DL (or UL) CC means that the UE can receive PDSCH (or transmit PUSCH) in that CC.
- the reverse applies for deactivation of a DL (or UL) CC To maintain communication, one DL CC remains activated and is referred to as a DL Primary CC (DL PCC).
- DL PCC DL Primary CC
- the remaining DL CCs are referred to as DL Secondary CCs (DL SCCs).
- the DL PCC is assumed to be linked to the UL PCC and both are UE-specific.
- All DL SAs scheduling PDSCH in the multiple DL CCs are transmitted in the DL PCC.
- Some DL SAs scheduling PDSCH in multiple DL CCs are not transmitted in the DL PCC.
- HARQ-ACK resource mapping depends on whether the first or the second of the previous two cases applies.
- HARQ-ACK resource mapping rules used for a FDD system with a single DL/UL CC pair are generalized and expanded.
- the HARQ-ACK resource mapping rules used for a TDD system with a single UL/DL CC pair are generalized and expanded, subject to additional conditions.
- the resource available for the HARQ-ACK signal transmission in response to PDSCH reception in DL CC m is determined as shown in Equation (1).
- FIG. 11 illustrates a transmission of three DL SAs in a DL PCC of a UE and mapping three respective HARQ-ACK resources.
- DL SA 1 1110 includes 2 CCEs 1111 and 1112, where the first CCE 1111 maps to a first HARQ-ACK resource (RSRC) 1140.
- DL SA 2 1120 includes 4 CCEs 1121, 1122, 1123, and 1124, where the first CCE 1121 maps to a second HARQ-ACK resource (RSRC) 1150.
- DL SA 3 1130 includes 2 CCEs 1131 and 1132, where the first CCE 1131 maps to a third HARQ-ACK resource (RSRC) 1160.
- FIG. 12 is a diagram illustrating a restriction that UEs having a same DL PCC are activated (and deactivated) DL SCCs in a same order, according to an embodiment of the present invention.
- UEs with DL CC2 1210 as a DL PCC are activated (and deactivated) DL SCCs in the same order, for example, starting with DL CC3 1220, and then continuing with DL CC4 1230, DL CC5 1240, and DL CC1 1250.
- UEs having DL CC 2 as DL PCC can have a different number of activated DL SCCs. Then, as a UE decodes the PCFICH in its activated DL CCs, it can identify the corresponding reserved HARQ-ACK resources from the PDCCH size. This restriction applies only for DL SCCs having PDCCH transmissions.
- FIG. 13 is a diagram illustrating an ordering of activation and deactivation for 5 DL CCs depending on the DL CC used for the transmission of the respective DL SAs, according to an embodiment of the present invention.
- DL CC2 (DL PCC) 1310 conveys DL SAs for DL CC2 1310A, DL CC3 1310B, and DL CC4 1310C.
- DL CC5 1320 conveys DL SAs for DL CC5 1320A.
- DL CC1 1330 conveys DL SAs for DL CC1 1330A. Because scheduling in DL CC3 and DL CC4 is through DL SAs transmitted in DL CC2 (for example, an index in the DL SA can indicate the DL CC), DL CC3 and DL CC4 can be activated (and deactivated) in any order.
- DL CC5 and DL CC1 which are activated (and deactivated) in the same order for all UEs having DL CC2 as their DL PCC.
- the HARQ-ACK signal transmissions in response to DL SA receptions in DL CC5 and DL CC1 is not in the UL CC(s) linked to these DL CCs, but are in the UL PCC (which linked to the DL PCC assumed to be DL CC2).
- HARQ-ACK resource mapping will now be described below, assuming the previous restriction and considering for simplicity DL CCs of the same BW.
- the UE first selects a value that provides and uses Equation (2) as the HARQ-ACK resource corresponding to PDSCH in DL SCC m.
- the HARQ-ACK resource mapping is as described in Equation (1).
- the previous HARQ-ACK resource mapping for multiple DL CCs follows the principles of HARQ-ACK resource mapping in TDD systems with a single DL/UL carrier.
- the maximum number of HARQ-ACK resources in the UL PCC can be very large.
- the DL PCC is not considered to participate in the HARQ-ACK resource mapping for DL SCCs having DL SA transmission (for example, the DL PCC may also support UEs configured with a single DL/UL CC pair), NodeB scheduler restrictions are used to avoid collisions of HARQ-ACK resources.
- the NodeB scheduler can prioritize the placement of the first CCE to be within the first 22 CCEs (for the setup in Table 2). As the number of UEs scheduled in multiple DL CCs per sub-frame is typically small, the impact of this prioritization on the overall CCE availability is minor.
- CCEs corresponding to the UE-CSS in DL SCCs can be omitted from the calculation of n CCE .
- Such an overhead is tolerable and comparable to the maximum overhead of about 5 PRBs when UEs are configured only a single DL/UL CC pair.
- HARQ-ACK resources for the second of the previous cases
- additional HARQ-ACK resource overhead occurs due to the provision for the maximum HARQ-ACK resources for all UEs configured multiple DL CCs, regardless of whether these UEs are scheduled in a sub-frame.
- the overhead due to HARQ-ACK resource allocation by RRC signaling may increase significantly while only modest increases can occur with dynamic HARQ-ACK resource allocation.
- HARQ-ACK resource sharing among multiple UEs can alleviate the increased overhead with HARQ-ACK resource allocation through RRC signaling, but such sharing imposes NodeB scheduler restrictions, as UEs sharing the same HARQ-ACK resource cannot have a DL SA in the same sub-frame.
- HARQ-ACK resource compression is enabled.
- HARQ-ACK overhead reduction may be achieved through NodeB scheduler restrictions by placing the first CCE of the respective DL SAs for DL SCCs in the first 22 CCEs (for the previous example). The scheduler will also then ensure that no DL SA in the DL PCC has a first CCE given as .
- the same resource mapping for all DL CCs can be used for the HARQ-ACK signal transmission in the UL PCC and . Thereafter, the scheduler then ensures that is different among all DL CCs where a UE receives DL SA.
- an offset for the HARQ-ACK resource can be provided by the respective DL SA.
- the corresponding Information Element (IE) in the DL SA will be referred to as HARQ-ACK Resource Index (HRI) IE.
- HRI HARQ-ACK Resource Index
- HRI IE consists of 2 bits
- the HRI IE can also be used to avoid having the constraint that the first CCE the NodeB scheduler uses to transmit DL SAs in DL SCCs is within the first 22 CCEs (with or without accounting for CCEs allocated to the UE-CSS), that is .
- the CCE index associated with the HARQ-ACK resource can be defined using the modulo operation with respect to a maximum CCE index value, , and n PUCCH (m) as shown in Equation (4).
- the value of can be either signaled by the NodeB (RRC signaling or broadcast signaling) or be predefined.
- the modulo operation between two integers, x,y with y>0, is defined as , where .
- the HARQ-ACK resource corresponding to the PDSCH in DL CC m can be determined as a function of the first CCE used for the respective DL SA and the value of the HRI IE as shown in Equation (5).
- the HARQ-ACK resource in response to DL SA reception in DL CC m can be determined as shown in Equation (6).
- a DL CC specific offset can be introduced, for example by RRC signaling, and n PUCCH (m), as shown in Equation (7). ... (7)
- n PUCCH (m) can be determined, as shown in Equation (8). ... (8)
- the addition of an explicit HRI IE in the DL SAs can be avoided if an existing IE can be interpreted as providing the HRI. Assuming that DL SAs include a Downlink Assignment Index (DAI) IE that provides a count for the DL SA number, the DL SAs can be ordered.
- DAI Downlink Assignment Index
- the DAI IE in the DL SAs can have a value of 1 for DL CC2, a value of 2 for DL CC4, and a value of 3 for DL CC1. Accordingly, the UE identifies that the DL SA in DL CC2 is ordered first, the DL SA in DL CC4 is ordered second, and the DL SA in DL CC1 is ordered third.
- the DAI IE can indicate whether the DL SA the UE receives in a sub-frame is the first, second, third, or fourth transmitted DL SA for the given CC.
- DL SAs are also assumed to include a Transmission Power Control (TPC) IE providing TPC commands in order for the UE to adjust the HARQ-ACK signal transmission power.
- TPC Transmission Power Control
- all DL SAs include the TPC IE.
- a TPC command is provided by the TPC IE in the first DL SA, as determined by the DAI IE value.
- the TPC IEs in the remaining DL SAs can be used as HRI IEs.
- FIG. 14 illustrates a principle of identifying and using the bits of an IE in the DL SAs to index the resources for the HARQ-ACK signal transmission according to an embodiment of the present invention.
- FIG. 14 considers the TPC IE, an explicit HRI IE may be used instead.
- a TPC IE in a first ordered DL SA 1410 (as determined by the DAI IE value) provides a TPC command for a HARQ-ACK signal transmission 1420 in response to reception of DL SAs.
- Each TPC IE in the remaining DL SA2 1430 through DL SA K 1450 is used as an index for HARQ-ACK resources 1440 through 1460, respectively.
- the HRI functionality is independent of how the HARQ-ACK resource is determined and serves to further index the HARQ-ACK resources in order to avoid collisions when resource compression is applied to the HARQ-ACK resource mapping. Moreover, the HRI functionality is applicable to either a PUCCH structure as illustrated in FIG. 1 or a PUCCH structure as illustrated in FIG. 8 and to further indexing either dynamically determined or RRC-configured HARQ-ACK resources.
- the TPC command for the HARQ-ACK transmission is missed and the UE does not perform a respective power adjustment.
- this is not expected to have a noticeable impact on the overall system operation as it is a low probability event, as UEs with DL CA have good link quality and DL SAs are unlikely to be missed, and the TPC adjustment is typically small.
- the HARQ-ACK resource is implicitly derived from the CCEs of the respective DL SA (second principle for the HARQ-ACK signal transmission assumed by the invention).
- FIG. 15 is a block diagram illustrating a transmitter for a HARQ-ACK signal in a PUCCH where a resource for the HARQ-ACK signal transmission (HARQ-ACK resource) is indexed by a TPC IE value in a DL SA, other than a first ordered DL SA, as determined from a value of a DAI IE, according to an embodiment of the present invention.
- HARQ-ACK resource a resource for the HARQ-ACK signal transmission
- TPC IE value in a DL SA other than a first ordered DL SA, as determined from a value of a DAI IE, according to an embodiment of the present invention.
- the main components are the same as those illustrated in FIG.
- the HARQ-ACK resource depends on an offset specified by a HRI value controller 1510 for mapping the TPC IE (or of the HRI IE) value, which the UE obtains from the respective DL SAs (with DAI IE value larger than one in the DL PCC) and uses to derive the HARQ-ACK resource.
- the HARQ-ACK resource includes the CS which is applied by the CS mapper 1520 and the PRB which is determined by the PRB selection controller 1530 (and also the OCC - not shown for simplicity).
- the transmitter structure as illustrated in FIG. 9 may be modified in the same manner.
- FIG. 16 is a block diagram illustrating a receiver for a HARQ-ACK signal in a PUCCH where a resource for the HARQ-ACK signal reception (HARQ-ACK resource) is indexed by a TPC IE value in a DL SA, other than a first ordered DL SA, as determined from a value of a DAI IE, according to an embodiment of the present invention.
- the main components are the same as those illustrated in FIG. 4 and described above, with the exception that the HARQ-ACK resource depends on the offset specified by the HRI value controller 1610 for the mapping of the TPC IE (or of the HRI IE) value, which the NodeB included in the respective DL SA.
- the resource includes the CS which is applied by the CS demapper 1630 and the PRB which is determined by PRB selection controller 1620 (and also the OCC - not shown for simplicity).
- the receiver structure as illustrated in FIG. 10 may also modified in the same manner.
- FIG. 17 is a diagram illustrating a resource mapping for an HARQ-ACK signal transmission for 2 DL CCs, each transmitting its own DL SA, using a DL CC specific offset, according to an embodiment of the present invention.
- an outer BW region starting from PRB 0 1710, is used for PUSCH transmissions and PUCCH transmissions other than dynamic HARQ-ACK transmissions 1720 (dynamic HARQ-ACK transmissions are in response to receptions of DL SAs).
- N PUCCH HARQ-ACK resources 1730 corresponding, for example, to N PUCCH /18 PRBs (assuming 18 HARQ-ACK channels per PRB)
- the HARQ-ACK resources in response to DL SAs in the DL PCC are mapped 1740.
- N PUCCH +N HARQ-ACK (0) HARQ-ACK resources 1750 corresponding, for example, to N PUCCH +N HARQ-ACK (0)/18 PRBs
- the HARQ-ACK resources in response to DL SAs in the DL SCC are mapped 1760.
- resources allocated to other PUCCH or PUSCH transmission follow 1770. The same mapping can apply from the other end of the BW (although not shown for brevity).
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Description
Claims (13)
- A method for a User Equipment (UE) to determine a set of resources available for an acknowledgement signal transmission, in a communication system wherein the UE receives multiple DownLink (DL) Scheduling Assignments (SAs) transmitted from a base station, each of the DL SAs being associated with a respective DL Component Carrier (CC) and being conveyed through a respective set of Control Channel Elements (CCEs), and wherein the UE transmits the acknowledgement signal in an UpLink (UL) CC, in response to a reception of the DL SAs, the UL CC and a first DL CC establishing a communication link, when the UE is configured for communication over a single UL CC and a single DL CC, , the method comprising the steps of:determining a first set of resources for the acknowledgement signal transmission, when all the DL SAs are received in the first DL CC; and determining a second set of resources for the acknowledgement signal transmission, when at least one of the DL SAs is received in a DL CC other than the first DL CC.
- A User Equipment (UE) apparatus for transmitting an acknowledgement signal in an UpLink (UL) Component Carrier (CC) in response to reception of multiple DownLink (DL) Scheduling Assignments (SAs) transmitted from a base station, each of the DL SAs being associated with a respective DL CC and being conveyed through a respective set of Control Channel Elements (CCEs), the UL CC and a first DL CC establishing a communication link when the UE apparatus is configured for communication over a single UL CC and a single DL CC, the apparatus comprising:a controller for allocating a set of resources for transmitting the acknowledgement signal, wherein the set of resources includes a first set of resources, when all of the DL SAs are received in the first DL CC, and includes a second set of resources, when at least one the DL SAs is received in a DL CC other than the first DL CC; and a transmitter for transmitting the acknowledgement signal using a resource from the allocated set of resources.
- The method of claim 1 or the apparatus of claim 2, wherein each resource in the first set of resources is determined in a same manner.
- The method or the apparatus of claim 3, wherein each resource is implicitly determined from at least a first CCE used for transmitting a respective DL SA.
- The method of claim 1 or the apparatus of claim 2, wherein the resource corresponding to the DL SA received in the DL CC other than the first DL CC, with each DL CC having an index provided by the base station through radio resource control signaling, is determined from at least the first CCE used for the transmission of the DL SA and an offset derived from the index of the DL CC.
- The method of claim 1 or the apparatus of claim 2, wherein each resource corresponding to each DL SA received in each DL CC other than the first DL CC is configured to the UE by the base station through radio resource control signaling.
- The method or the apparatus of claim 6, wherein the resource is further indexed by an information element in the DL SA.
- A method for a User Equipment (UE) to determine a resource for an acknowledgement signal transmission using a Downlink Assignment Index (DAI) Information Element (IE) included in each DownLink (DL) Scheduling Assignment (SA) for indicating a DL SA number and a Transmission Power Control (TPC) IE included in each DL SA for adjusting an acknowledgement signal transmission power, in a communication system wherein the UE receives multiple DL SAs transmitted from a base station, each of the DL SAs being associated with a respective DL Component Carrier (CC) and being conveyed through a respective set of Control Channel Elements (CCEs), and wherein the UE transmits in an UpLink (UL) CC an acknowledgement signal in response to a reception of the DL SAs, the UL CC and a first DL CC establishing a communication link when the UE is configured for communication over a single UL CC and a single DL CC, , the method comprising the steps of:determining a power adjustment for the acknowledgement signal transmission from a TPC IE value in a DL SA associated with the first DL CC having a DAI IE value equal to one; and determining the resource for the acknowledgement signal transmission from a TPC IE value in each DL SA associated with the first DL CC having a DAI IE value larger than one and from a TPC IE value in each DL SA associated with a DL CC other than the first DL CC.
- A User Equipment (UE) apparatus for transmitting an acknowledgement signal in an UpLink (UL) Component Carrier (CC) in response to reception of multiple DownLink (DL) Scheduling Assignments (SAs) transmitted from a base station, wherein each of the DL SAs is associated with a respective DL CC conveyed through a respective set of Control Channel Elements (CCEs) and includes a Downlink Assignment Index (DAI) Information Element (IE) for indicating a DL SA number and a Transmission Power Control (TPC) IE for adjusting an acknowledgement signal transmission power, the UL CC and a first DL CC establishing a communication link when the UE apparatus is configured for communication over a single UL CC and a single DL CC, the apparatus comprising:a transmission power controller for adjusting the acknowledgement signal transmission power using a TPC IE value in a DL SA associated with the first DL CC having a DAI IE value equal to one;a resource allocation controller for allocating a resource for transmitting the acknowledgement signal using a TPC IE value in each DL SA associated with the first DL CC having a DAI IE value larger than one and from a TPC IE value in each DL SA associated with a DL CC other than the first DL CC; and a transmitter for transmitting the acknowledgement signal with an adjusted transmission power in the allocated resource.
- The method of claim 8 or the apparatus of claim 9, wherein the TPC IE value is identical in each DL SA associated with the first DL CC having a DAI IE value larger than one and in each DL SA associated with a DL CC other than the first DL CC.
- The method of claim 8 or the apparatus of claim 9, wherein the TPC IE value, in each DL SA associated with the first DL CC having a DAI IE value larger than one and in each DL SA associated with a DL CC other than the first DL CC, is an index to a resource configured to the UE by the base station through radio resource control signaling for transmitting the acknowledgement signal.
- The method of claim 8 or the apparatus of claim 9, wherein when only a DL SA associated with the first DL CC having a DAI IE value equal to one is received, the allocated resource for transmitting the acknowledgement signal is derived from the CCEs used to transmit the DL SA.
- The method of claim 8 or the apparatus of claim 9, wherein communication is configured over only a single UL CC and a single DL CC and the communication system uses Time Division Duplexing.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11763046.7A EP2553857A4 (en) | 2010-03-31 | 2011-03-31 | Indexing resources for transmission of acknowledgement signals in multi-cell tdd communication systems |
JP2013502480A JP5752783B2 (en) | 2010-03-31 | 2011-03-31 | Resource indexing for transmission of response signal in multi-cell TDD communication system |
KR1020127028376A KR101832276B1 (en) | 2010-03-31 | 2011-03-31 | Indexing resources for transmission of acknowledgement signals in multi-cell tdd communication systems |
CN201180016598.8A CN102845014B (en) | 2010-03-31 | 2011-03-31 | For the index resource of confirmation signal transmission in multiple cell tdd communication systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US31952410P | 2010-03-31 | 2010-03-31 | |
US61/319,524 | 2010-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011122874A2 true WO2011122874A2 (en) | 2011-10-06 |
WO2011122874A3 WO2011122874A3 (en) | 2012-01-12 |
Family
ID=44709585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2011/002224 WO2011122874A2 (en) | 2010-03-31 | 2011-03-31 | Indexing resources for transmission of acknowledgement signals in multi-cell tdd communication systems |
Country Status (6)
Country | Link |
---|---|
US (4) | US8644199B2 (en) |
EP (1) | EP2553857A4 (en) |
JP (2) | JP5752783B2 (en) |
KR (1) | KR101832276B1 (en) |
CN (2) | CN102845014B (en) |
WO (1) | WO2011122874A2 (en) |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100254329A1 (en) * | 2009-03-13 | 2010-10-07 | Interdigital Patent Holdings, Inc. | Uplink grant, downlink assignment and search space method and apparatus in carrier aggregation |
NZ598903A (en) * | 2009-10-05 | 2014-02-28 | Ericsson Telefon Ab L M | Pucch resource allocation for carrier aggregation in lte-advanced |
CN102215085B (en) * | 2010-04-07 | 2014-05-07 | 华为技术有限公司 | Method, system, user equipment and base station for transmitting uplink control information |
CN103098536A (en) * | 2010-04-22 | 2013-05-08 | 夏普株式会社 | Communication method and system for physical uplink control channel resource assignment, and base station, user equipment and integrated circuit therein |
US9210697B2 (en) * | 2010-09-09 | 2015-12-08 | Lg Electronics Inc. | Method and device of transmitting a plurality of reception confirmation information |
KR101802761B1 (en) * | 2010-09-13 | 2017-11-29 | 엘지전자 주식회사 | Method and device for transmitting control information |
EP3687090B1 (en) | 2010-11-02 | 2022-10-05 | Lg Electronics Inc. | Method and device for transmitting uplink control information in wireless communication system |
WO2012091490A2 (en) * | 2011-01-02 | 2012-07-05 | 엘지전자 주식회사 | Method and device for ack/nack transmission in tdd-based wireless communication system |
US8934440B2 (en) * | 2011-01-07 | 2015-01-13 | Pantech Co., Ltd. | Method and device for transmitting response information, and resource allocation for response information transmission according to transmission conditions in a wireless communication system |
GB2487909B8 (en) * | 2011-02-04 | 2015-01-21 | Sca Ipla Holdings Inc | Telecommunications method and system |
EP2690808B1 (en) * | 2011-03-25 | 2016-02-10 | LG Electronics Inc. | Method wherein a base station transmits and receives tdd configuration information regarding a plurality of ccs in a wireless communication system supporting a plurality of the ccs, and apparatus for same |
CN103493419B (en) | 2011-05-17 | 2016-08-17 | Lg电子株式会社 | Send method and the device for the method for control information |
CN102916789B (en) | 2011-08-05 | 2016-01-13 | 财团法人工业技术研究院 | Time division duplex wireless communication system and hybrid automatic repeat request acknowledgement reporting method |
JP5693794B2 (en) * | 2011-09-23 | 2015-04-01 | エルジー エレクトロニクス インコーポレイティド | Method for transmitting control information and apparatus therefor |
CN115209357B (en) * | 2011-11-04 | 2024-03-01 | 苹果公司 | Selection of acknowledgement timing in wireless communications |
US9325454B2 (en) * | 2012-02-24 | 2016-04-26 | Futurewei Technologies, Inc. | System and method for HARQ entity configuration |
KR101612667B1 (en) * | 2012-07-03 | 2016-04-14 | 엘지전자 주식회사 | Method and device for allocating resource for uplink control channel in wireless communication system |
US8958362B2 (en) * | 2012-08-24 | 2015-02-17 | William Marsh Rice University | Method and system for wirelessly transmitting data |
US20140071935A1 (en) * | 2012-09-07 | 2014-03-13 | Samsung Electronics Co., Ltd. | Multiplexing resource element groups for control channel elements of control channels |
ES2614354T3 (en) | 2012-09-27 | 2017-05-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and systems for allocating HARQ resources in the PUCCH with TDD for the enhanced physical downlink control (EPDCCH) channel |
US9647818B2 (en) | 2013-01-03 | 2017-05-09 | Intel IP Corporation | Apparatus and method for single-tone device discovery in wireless communication networks |
US9882697B2 (en) * | 2013-01-09 | 2018-01-30 | Lg Electronics Inc. | Method and apparatus for transmitting receipt confirmation reply in wireless communication system |
US9191930B2 (en) | 2013-03-13 | 2015-11-17 | Samsung Electronics Co., Ltd. | Transmission of acknowledgement information in adaptively configured TDD communication systems |
CN105103634B (en) | 2013-03-29 | 2019-03-22 | 英特尔Ip公司 | Extended pattern in cordless communication network calls discontinuous reception (DRX) period |
US9160515B2 (en) | 2013-04-04 | 2015-10-13 | Intel IP Corporation | User equipment and methods for handover enhancement using scaled time-to-trigger and time-of-stay |
CN105814827B (en) | 2013-10-30 | 2019-06-11 | Lg 电子株式会社 | The method for sending HARQ ACK/NACK from the user equipment for accessing multiple cell simultaneously |
US9667386B2 (en) * | 2013-11-13 | 2017-05-30 | Samsung Electronics Co., Ltd | Transmission of control channel and data channels for coverage enhancements |
CA2967281C (en) | 2014-12-08 | 2023-01-31 | Lg Electronics Inc. | Method for transmitting uplink control information and device therefor |
US9888465B2 (en) * | 2015-04-06 | 2018-02-06 | Samsung Electronics Co., Ltd. | Codeword determination for acknowledgement information |
CN106411477B (en) * | 2015-07-29 | 2019-05-28 | 普天信息技术有限公司 | Ascending HARQ course maintaining method and device |
WO2017049413A1 (en) * | 2015-09-24 | 2017-03-30 | Sierra Wireless, Inc. | Method and system for transmitting control information for user equipment |
CN106559202B (en) * | 2015-09-29 | 2019-09-10 | 上海朗帛通信技术有限公司 | A kind of method, user equipment and base station equipment for supporting low latitude mouthful delay |
TW201806349A (en) | 2016-08-10 | 2018-02-16 | Idac控股公司 | Methods for flexible reference signal transmission with single carrier frequency domain multiple access (SC-FDMA) and OFDMA |
CN108282881B (en) * | 2017-01-06 | 2020-12-15 | 华为技术有限公司 | Resource allocation method and device |
CN108365936B (en) * | 2017-01-26 | 2020-10-27 | 华为技术有限公司 | Communication method, device and system |
KR102559382B1 (en) * | 2017-08-10 | 2023-07-25 | 삼성전자 주식회사 | Method and Apparatus for Determining Frequency Resources in Next-Generation Cellular Networks |
EP3599748B1 (en) * | 2018-07-26 | 2020-12-16 | Mitsubishi Electric R&D Centre Europe B.V. | Symbols incorporation scheme for dft-s-ofdm |
EP3834570A4 (en) | 2018-08-09 | 2022-05-25 | Sierra Wireless, Inc. | Method and apparatus for multi-transport block grant transmissions |
JP2020129746A (en) * | 2019-02-08 | 2020-08-27 | シャープ株式会社 | Terminal device, base station device and communication method |
EP4038947A4 (en) | 2019-10-03 | 2023-10-04 | Sierra Wireless, Inc. | Method and apparatus for facilitating transmissions in a wireless communication system |
US11575472B2 (en) | 2020-02-27 | 2023-02-07 | Sierra Wireless, Inc. | Methods and apparatuses for supporting multi transport block grant data transmission |
EP4111622A4 (en) * | 2020-10-21 | 2023-07-26 | Samsung Electronics Co., Ltd. | Method and apparatus for transmitting and receiving hybrid automatic retransmission request acknowledgement information in a wireless communication system |
WO2022086261A1 (en) * | 2020-10-22 | 2022-04-28 | 엘지전자 주식회사 | Method, user equipment, processing device, storage medium, and computer program for receiving downlink channel, and method and base station for transmitting downlink channel |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2343932A2 (en) | 2010-01-07 | 2011-07-13 | Samsung Electronics Co., Ltd. | Resource indexing for acknowledgement signals in response to receptions of multiple assignments |
Family Cites Families (58)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009017374A2 (en) * | 2007-07-31 | 2009-02-05 | Samsung Electronics Co., Ltd. | Method and system for dimensioning scheduling assignments in a communication system |
KR101457685B1 (en) | 2007-08-10 | 2014-11-03 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving ack/nack in cellular wireless communication systems |
WO2009022565A1 (en) * | 2007-08-10 | 2009-02-19 | Nec Corporation | Communication system, and device, method, and program used for same |
CN103414533B (en) | 2007-09-28 | 2016-08-10 | Lg电子株式会社 | Detect the method and apparatus of control information in a wireless communication system |
CN104796230B (en) * | 2007-10-02 | 2019-04-26 | 三星电子株式会社 | Method and apparatus for sending confirmation signal in a communications system |
KR101387529B1 (en) * | 2007-10-15 | 2014-04-23 | 엘지전자 주식회사 | Method for communicating data between mobile station and base station, and Mobile communication terminal thereof |
US8493956B2 (en) * | 2007-10-31 | 2013-07-23 | Qualcomm Incorporated | Methods and apparatus related to signaling request to transmit traffic in a wireless communications system |
MY192672A (en) | 2008-02-04 | 2022-08-30 | Samsung Electronics Co Ltd | Control and data multiplexing in communication systems |
US9036564B2 (en) * | 2008-03-28 | 2015-05-19 | Qualcomm Incorporated | Dynamic assignment of ACK resource in a wireless communication system |
US8531962B2 (en) * | 2008-04-29 | 2013-09-10 | Qualcomm Incorporated | Assignment of ACK resource in a wireless communication system |
CN101500260B (en) * | 2008-04-29 | 2011-09-14 | 华为技术有限公司 | Method, apparatus and system for allocating response channel for customer |
BRPI0912185A2 (en) * | 2008-05-02 | 2015-10-06 | Ntt Docomo Inc | base station and communication control method |
JP4922242B2 (en) * | 2008-06-05 | 2012-04-25 | パナソニック株式会社 | Encoding device, encoding method, and Viterbi decoding device |
DK2849378T3 (en) * | 2008-06-23 | 2019-03-04 | Beijing Xiaomi Mobile Software Co Ltd | Method and apparatus for providing confirmation bundling |
US8611261B2 (en) * | 2008-06-24 | 2013-12-17 | Nokia Siemens Networks Oy | Control channel signaling for multiple ACK/NACK assignments |
KR20100011879A (en) * | 2008-07-25 | 2010-02-03 | 엘지전자 주식회사 | Method of receiving data in wireless communication system |
JP5308525B2 (en) * | 2008-07-30 | 2013-10-09 | エルジー エレクトロニクス インコーポレイティド | Method and apparatus for transmitting control information in wireless communication system |
CN102113398B (en) * | 2008-08-01 | 2014-07-02 | Lg电子株式会社 | Resource allocation method for backhaul link and access link in wireless communication system including relay |
US9225481B2 (en) * | 2008-08-11 | 2015-12-29 | Qualcomm Incorporated | Downlink grants in a multicarrier wireless communication system |
KR101573072B1 (en) | 2008-08-27 | 2015-12-01 | 엘지전자 주식회사 | Method of transmitting control information in wireless communication system |
CN102224758B (en) * | 2008-09-23 | 2015-02-04 | 诺基亚公司 | Optimized uplink control signaling for extended bandwidth |
US8295779B2 (en) * | 2008-10-31 | 2012-10-23 | Interdigital Patent Holdings, Inc. | Method and apparatus for wireless transmissions using multiple uplink carriers |
US8249010B2 (en) * | 2008-11-05 | 2012-08-21 | Huawei Technologies Co., Ltd. | Method and apparatus for feeding back and receiving acknowledgement information of semi-persistent scheduling data packets |
EP2200208A1 (en) * | 2008-12-19 | 2010-06-23 | Panasonic Corporation | HARQ ACK/NACK for dynamic PDSCH |
JP5199223B2 (en) * | 2008-12-30 | 2013-05-15 | 創新音▲速▼股▲ふん▼有限公司 | Method and communication apparatus for improving ACK / NACK bundling |
CN101771515A (en) * | 2008-12-30 | 2010-07-07 | 三星电子株式会社 | Method for transmitting hybrid automatic repeat request-acknowledgement character (HARQ-ACK) |
US20100172318A1 (en) * | 2009-01-05 | 2010-07-08 | Intel Corporation | Handling Hybrid Automatic Repeat Requests in Wireless Systems |
US8565066B2 (en) * | 2009-01-08 | 2013-10-22 | Samsung Electronics Co., Ltd. | System and method for an uplink acknowledgement transmission in carrier-aggregated wireless communication systems |
US8625554B2 (en) * | 2009-01-30 | 2014-01-07 | Samsung Electronics Co., Ltd. | System and method for uplink data and control signal transmission in MIMO wireless systems |
US8767632B2 (en) * | 2009-02-05 | 2014-07-01 | Motorola Mobility Llc | Method for uplink acknowledgement/non-acknowledgement messages in a wireless communication system |
KR101715938B1 (en) * | 2009-03-03 | 2017-03-14 | 엘지전자 주식회사 | Method and apparatus for transmitting harq ack/nack signal in multiple antenna system |
KR101607333B1 (en) * | 2009-03-05 | 2016-03-30 | 엘지전자 주식회사 | Method and apparatus for trnasmitting control signal of relay station |
US10681709B2 (en) | 2009-03-16 | 2020-06-09 | Sun Patent Trust | Wireless communication terminal device, wireless communication base station device, and resource region setting method |
JP5106477B2 (en) * | 2009-05-18 | 2012-12-26 | 株式会社エヌ・ティ・ティ・ドコモ | Radio base station and mobile communication method |
US8565167B2 (en) * | 2009-07-02 | 2013-10-22 | Nokia Corporation | System and methods for ACK/NAK feedback in TDD communications |
CN101657018B (en) * | 2009-08-18 | 2015-01-28 | 中兴通讯股份有限公司 | Indicating method and base station, decoding method and terminal for wireless channel resource allocation |
KR101761610B1 (en) * | 2009-08-26 | 2017-07-26 | 엘지전자 주식회사 | Method of time-slot based multiple ack/nack transmission |
CN101646234A (en) * | 2009-09-01 | 2010-02-10 | 中兴通讯股份有限公司 | Obtaining method of timing lead |
US8670396B2 (en) * | 2009-09-29 | 2014-03-11 | Qualcomm Incorporated | Uplink control channel resource allocation for transmit diversity |
CN104079388B (en) * | 2009-12-03 | 2017-10-17 | 华为技术有限公司 | The method of feeding back ACK/nack message, base station and user equipment during carrier aggregation |
CN102088341B (en) * | 2009-12-04 | 2013-04-17 | 电信科学技术研究院 | Transmitting method and transmitting device of feedback information |
CN101795492B (en) * | 2010-01-15 | 2015-01-28 | 中兴通讯股份有限公司 | Method for determining physical uplink control channel resources in multi-carrier system |
US8325685B2 (en) * | 2010-02-12 | 2012-12-04 | Research In Motion Limited | System and method for improved control channel transmit diversity |
WO2011105769A2 (en) * | 2010-02-23 | 2011-09-01 | 엘지전자 주식회사 | Method and device for transmitting uplink acknowledgement information in a wireless communication system supporting multiple carriers |
WO2011137408A2 (en) * | 2010-04-30 | 2011-11-03 | Interdigital Patent Holdings, Inc. | Determination of carriers and multiplexing for uplink control information transmission |
US9155083B2 (en) * | 2010-10-12 | 2015-10-06 | Lg Electronics Inc. | Method and device for transmitting control information in a wireless communication system |
EP3687090B1 (en) * | 2010-11-02 | 2022-10-05 | Lg Electronics Inc. | Method and device for transmitting uplink control information in wireless communication system |
KR101899820B1 (en) * | 2010-11-11 | 2018-11-08 | 엘지전자 주식회사 | Uplink control information transmitting/receiving method and device in a wireless communication system |
US8830883B2 (en) * | 2010-11-16 | 2014-09-09 | Qualcomm Incorporated | Method and apparatus for improving acknowledgement/negative acknowledgement feedback |
US9137796B2 (en) * | 2011-02-10 | 2015-09-15 | Lg Electronics Inc. | Method and apparatus for monitoring scheduling information |
CN102638879A (en) * | 2011-02-12 | 2012-08-15 | 北京三星通信技术研究有限公司 | Method for allocating acknowledgement (ACK)/negative acknowledgement (NACK) channel resource |
CN102752085B (en) * | 2011-04-21 | 2014-09-17 | 华为技术有限公司 | Method and equipment for sending acknowledgement or non-acknowledgement indication information in time division duplexing (TDD) system |
EP2765723B1 (en) * | 2011-10-04 | 2016-05-18 | LG Electronics Inc. | Method for scheduling bundling in wireless access system and apparatus for same |
KR20130125695A (en) * | 2012-05-09 | 2013-11-19 | 주식회사 팬택 | Method and apparatus for controlling harq-ack index mapping and uplink resource allocation for channel selection transmission in inter-band time division duplex mode |
WO2014017877A1 (en) * | 2012-07-26 | 2014-01-30 | Samsung Electronics Co., Ltd. | Method and apparatus for harq-ack transmission in traffic adaptive tdd system |
HUE037326T2 (en) * | 2012-10-26 | 2018-08-28 | Intel Corp | Reporting of user plane congestion |
US9191930B2 (en) * | 2013-03-13 | 2015-11-17 | Samsung Electronics Co., Ltd. | Transmission of acknowledgement information in adaptively configured TDD communication systems |
WO2019157696A1 (en) * | 2018-02-14 | 2019-08-22 | Panasonic Intellectual Property Corporation Of America | User equipment, base station and wireless communication method |
-
2011
- 2011-03-31 KR KR1020127028376A patent/KR101832276B1/en active IP Right Grant
- 2011-03-31 CN CN201180016598.8A patent/CN102845014B/en active Active
- 2011-03-31 EP EP11763046.7A patent/EP2553857A4/en not_active Ceased
- 2011-03-31 JP JP2013502480A patent/JP5752783B2/en active Active
- 2011-03-31 WO PCT/KR2011/002224 patent/WO2011122874A2/en active Application Filing
- 2011-03-31 US US13/077,046 patent/US8644199B2/en active Active
- 2011-03-31 CN CN201510050614.5A patent/CN104579604B/en active Active
-
2014
- 2014-02-04 US US14/172,504 patent/US9510366B2/en active Active
-
2015
- 2015-03-25 JP JP2015063188A patent/JP6140751B2/en active Active
-
2016
- 2016-11-29 US US15/363,720 patent/US10194444B2/en active Active
-
2019
- 2019-01-28 US US16/259,480 patent/US11129166B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2343932A2 (en) | 2010-01-07 | 2011-07-13 | Samsung Electronics Co., Ltd. | Resource indexing for acknowledgement signals in response to receptions of multiple assignments |
Also Published As
Publication number | Publication date |
---|---|
US20110243039A1 (en) | 2011-10-06 |
CN102845014B (en) | 2016-03-23 |
US20140153492A1 (en) | 2014-06-05 |
EP2553857A4 (en) | 2014-05-28 |
JP2015149742A (en) | 2015-08-20 |
JP5752783B2 (en) | 2015-07-22 |
US8644199B2 (en) | 2014-02-04 |
CN102845014A (en) | 2012-12-26 |
WO2011122874A3 (en) | 2012-01-12 |
US9510366B2 (en) | 2016-11-29 |
CN104579604B (en) | 2019-12-06 |
KR20130081650A (en) | 2013-07-17 |
CN104579604A (en) | 2015-04-29 |
EP2553857A2 (en) | 2013-02-06 |
US20170079043A1 (en) | 2017-03-16 |
KR101832276B1 (en) | 2018-02-27 |
US20190159210A1 (en) | 2019-05-23 |
JP2013526121A (en) | 2013-06-20 |
US10194444B2 (en) | 2019-01-29 |
US11129166B2 (en) | 2021-09-21 |
JP6140751B2 (en) | 2017-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2011122874A2 (en) | Indexing resources for transmission of acknowledgement signals in multi-cell tdd communication systems | |
RU2563249C2 (en) | Radio base station, user terminal and radio communication method | |
WO2010126339A2 (en) | Multiplexing large payloads of control information from user equipments | |
WO2010123304A2 (en) | Multiplexing large payloads of control information from user equipments | |
WO2011102692A2 (en) | Application of sequence hopping and orthogonal covering codes to uplink reference signals | |
WO2009116789A1 (en) | Method of transmitting uplink data in wireless communication system | |
WO2010036053A2 (en) | Apparatus and method for supporting transmission of sounding reference signals from multiple antennas | |
WO2010123267A2 (en) | Method for transmitting a control signal in a wireless communication system, and apparatus for same | |
WO2013015637A2 (en) | Method for transmitting uplink signal, user equipment, method for receiving uplink signal, and base station | |
WO2013032202A2 (en) | Method and user equipment for receiving downlink signals, and method and base station for transmitting downlink signals | |
WO2010018942A2 (en) | Method and apparatus of transmitting scheduling request in wireless communication system | |
WO2013058624A1 (en) | Method and apparatus for transmitting and receiving control information in a wireless communication system | |
WO2013089529A1 (en) | Communication support for low capability devices | |
WO2010064844A2 (en) | Transmission of scheduling assignments in multiple operating bandwidths | |
WO2011049354A2 (en) | Transmission diversity and multiplexing for harq-ack signals in communication systems | |
WO2014069958A1 (en) | Method and apparatus for transmitting harq indication information | |
WO2011021878A2 (en) | Method and system for assigning physical uplink control channel (pucch) resources | |
WO2010087674A2 (en) | Transmitting uplink control information over a data channel or over a control channel | |
WO2010104352A2 (en) | Transmission of acknowledgement signals in a communication system | |
WO2010019019A2 (en) | Method and apparatus for supporting multiple reference signals in ofdma communication systems | |
WO2010114233A2 (en) | Method for allocating resource to uplink control signal in wireless communication system and apparatus therefor | |
WO2017052251A1 (en) | Method and apparatus for transmitting uplink control information (uci) in wireless communication system | |
WO2010126247A2 (en) | Method and apparatus for transmitting uplink control signal in wireless communication system | |
EP2761775A1 (en) | Method and user equipment for transmitting channel state information and method and base station for receiving channel state information | |
WO2012134113A2 (en) | Method for transmitting ack/nack information and method for receiving ack/nack information, user device, and base station |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180016598.8 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11763046 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013502480 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20127028376 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011763046 Country of ref document: EP |