WO2016119221A1 - 通信系统中反馈信息的传输方法及装置 - Google Patents
通信系统中反馈信息的传输方法及装置 Download PDFInfo
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- WO2016119221A1 WO2016119221A1 PCT/CN2015/071957 CN2015071957W WO2016119221A1 WO 2016119221 A1 WO2016119221 A1 WO 2016119221A1 CN 2015071957 W CN2015071957 W CN 2015071957W WO 2016119221 A1 WO2016119221 A1 WO 2016119221A1
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- codebook size
- feedback information
- information
- base station
- indication information
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- 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
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- 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
- H04L1/1864—ARQ related signaling
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- 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
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0072—Error control for data other than payload data, e.g. control data
- H04L1/0073—Special arrangements for feedback channel
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- 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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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- 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
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- 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
Definitions
- the embodiments of the present invention relate to communication technologies, and in particular, to a method and an apparatus for transmitting feedback information in a communication system.
- LTE Long Term Evolution
- HARQ Hybrid Automatic Repeat Request
- UE user equipment
- Physical Downlink shared channel Physical
- PDSCH Downlink Shared Channel
- ACK acknowledgement
- PUCCH Physical Uplink Control Channel
- NACK non-acknowledgement
- the uplink data needs to be sent in the uplink subframe in which the ACK/NACK information is sent by the UE, in order to maintain the uplink single carrier characteristic of the LTE system, to improve the efficiency of the uplink transmission power, the ACK/NACK information and the The uplink data is mapped to a Physical Uplink Shared Channel (PUSCH) and simultaneously transmitted to the base station.
- PUSCH Physical Uplink Shared Channel
- the LTE system also supports carrier aggregation (CA) technology, that is, the base station configures at least two carriers to the same UE to improve the data transmission rate of the UE, where the at least two carriers include: one primary carrier And at least one secondary carrier.
- CA carrier aggregation
- the PUCCH transmission mode in the CA mode includes: a channel selection mode and a PUCCH format 3; wherein the channel selection mode supports a CA of 2 carriers at most; the PUCCH format 3 mode can support a CA of 5 carriers or can support up to 20 ACKs at most
- the transmission of the NACK bit therefore, when the uplink data needs to be transmitted in the uplink subframe in which the UE sends the ACK/NACK information, the PUSCH can carry up to 20 ACK/NACK bits.
- PUSCH may need to carry more bits.
- ACK/NACK information therefore, how to carry more bits of ACK/NACK information in the PUSCH is a technical problem to be solved by the present invention.
- the embodiment of the invention provides a method and a device for transmitting feedback information in a communication system, which can not only carry more ACK/NACK information in a PUSCH, but also saves resource overhead.
- an embodiment of the present invention provides a method for transmitting feedback information in a communication system, including:
- the user equipment UE receives downlink data.
- a codebook size of the feedback information is a first codebook size or a second codebook size, where the first codebook size corresponds to the first subset included a number of downlink subframes, where the second codebook size corresponds to the number of downlink subframes included in the second subset;
- the UE encodes the feedback information according to the codebook size to obtain encoded feedback information
- PUSCH physical uplink shared channel
- the determining, by the UE, the codebook size of the feedback information includes:
- the UE determines that the codebook size of the feedback information is the first codebook. Size; or
- the UE determines that the codebook size of the feedback information is the second codebook. Size; or
- the UE determines that the codebook size of the feedback information is the first codebook size.
- the determining, by the UE, the codebook size of the feedback information includes:
- the UE determines that the codebook size of the feedback information is the first codebook. Size; or
- the UE determines that the codebook size of the feedback information is the second codebook. Size; or
- the UE determines that the codebook size of the feedback information is a predefined codebook size, and the predefined codebook size is the first codebook size or location.
- the second codebook size is described.
- the determining, by the UE, the codebook size of the feedback information includes:
- the UE determines the feedback The codebook size of the information is the first codebook size
- the UE determines the feedback The codebook size of the information is the second codebook size
- the UE determines that the codebook size of the feedback information is the first codebook size
- the UE determines that the codebook size of the feedback information is the first codebook size indicated by the second indication information or The second codebook size; or
- the UE determines that the codebook size of the feedback information is the first codebook size.
- the receiving, by the UE, the downlink data includes:
- the UE receives the downlink data in a downlink subframe scheduled by the base station, where the downlink subframe scheduled by the base station constitutes a second downlink subframe set, and the second downlink subframe set is the first a subset of the set of downlink subframes;
- a codebook size of the feedback information including:
- the UE determines that the codebook size of the feedback information is the first codebook size
- the UE determines that the codebook size of the feedback information is the first codebook size. Or the second codebook size;
- the UE determines that the codebook size of the feedback information is the second codebook size.
- the UE mapping the encoded feedback information to Before PUSCH it also includes:
- the UE scrambles the encoded feedback information by using a first scrambling code
- the UE scrambles the encoded feedback information by using a second scrambling code.
- the UE is configured according to The codebook size encodes the feedback information to obtain encoded feedback information, including:
- the UE encodes the feedback information according to the first codebook size to obtain first encoded feedback information
- mapping by the UE, the encoded feedback information to the PUSCH, including:
- the UE encodes the feedback information according to the codebook size to obtain encoded feedback information, including:
- the UE encodes the feedback information according to the second codebook size to obtain a second encoded Feedback
- mapping by the UE, the encoded feedback information to the PUSCH, including:
- the UE maps the second encoded feedback information to the PUSCH according to the second number of symbols.
- the UE before the receiving, by the UE, the downlink data, the UE further includes: receiving, by the UE, downlink control information sent by the base station ;
- the receiving, by the UE, the downlink data includes: receiving, by the UE, downlink data according to the downlink control information in a downlink subframe scheduled by the base station;
- the first indication information is information in the downlink control information.
- the second indication information is information used for scheduling uplink scheduling information of the PUSCH.
- an embodiment of the present invention provides a method for transmitting feedback information in a communication system, including:
- the base station sends downlink data to the user equipment UE;
- the base station determines an uplink subframe for receiving feedback information corresponding to the downlink data sent by the UE, where the first downlink subframe set associated with the uplink subframe includes a first subset and a second subframe a set, the first subset being a true subset of the second subset;
- a codebook size of the feedback information is a first codebook size or a second codebook size, where the first codebook size corresponds to the first subset included a number of downlink subframes, where the second codebook size corresponds to the number of downlink subframes included in the second subset;
- the base station receives feedback information mapped on the physical uplink shared channel PUSCH sent by the UE in the uplink subframe according to the determined codebook size of the feedback information.
- the base station receives a physical uplink share sent by the UE in the uplink subframe.
- the method further includes:
- the base station notifies the UE of the determined codebook size of the feedback information by sending the first indication information;
- the codebook size of the feedback information determined by the base station is the first codebook size.
- the base station receives a physical uplink share sent by the UE in the uplink subframe.
- the method further includes:
- the base station notifies the UE of the determined codebook size of the feedback information by sending the second indication information;
- the codebook size of the feedback information determined by the base station is a predefined codebook size, and the predefined codebook size is the first The codebook size or the second codebook size.
- the base station receives a physical uplink share sent by the UE in the uplink subframe.
- the method further includes:
- the base station notifies the UE of the determined codebook size of the feedback information by sending the first indication information and the second indication information;
- the codebook size of the feedback information determined by the base station is the first codebook size
- the base station does not send the first indication information to the UE, but the base station notifies the UE of the determined codebook size of the feedback information by sending the second indication information;
- the codebook size of the feedback information determined by the base station is the first codebook size.
- the base station in a fourth possible implementation manner of the second aspect, is in the uplink Before receiving the feedback information mapped on the physical uplink shared channel PUSCH sent by the UE in the subframe, the method further includes:
- the base station performs descrambling processing on the first scrambling code, where the first scrambling code is that the UE adds the encoded feedback information when determining that the codebook size of the feedback information is the first codebook size. Disturbed; or,
- the base station performs descrambling processing on the second scrambling code, where the second scrambling code is that the UE adds the encoded feedback information when determining that the codebook size of the feedback information is the second codebook size. Disturbed
- the encoded feedback information is information obtained by the UE encoding the feedback information according to the codebook size.
- the UE before the sending, by the base station, the downlink data to the UE, the UE sends downlink control information;
- the sending, by the base station, downlink data to the UE includes: sending, by the base station, downlink data to the UE in a downlink subframe scheduled by the base station;
- the first indication information is information in the downlink control information.
- the second indication information is used in scheduling uplink scheduling information of the PUSCH information.
- an embodiment of the present invention provides a user equipment UE, including:
- a receiving module configured to receive downlink data
- a processing module configured to determine an uplink subframe for feeding back feedback information corresponding to the downlink data, and determine a first downlink subframe set associated with the uplink subframe, where the downlink data is the receiving Received by the module, the first downlink subframe set includes a first subset and a second subset, where the first subset is a true subset of the second subset;
- the processing module is further configured to determine a codebook size of the feedback information, where the codebook size is a first codebook size or a second codebook size, and the first codebook size corresponds to the first The number of downlink subframes included in a subset, where the second codebook size corresponds to the number of downlink subframes included in the second subset;
- the processing module is further configured to: encode the feedback information according to the codebook size to obtain encoded feedback information;
- the processing module is further configured to map the encoded feedback information to a physical uplink shared channel (PUSCH), and control a sending module to send the encoded feedback information in the uplink subframe by using the PUSCH;
- PUSCH physical uplink shared channel
- the sending module is configured to send the encoded feedback information to the base station in the uplink subframe by using the PUSCH.
- the processing determining module is specifically configured to:
- determining a codebook size of the feedback information is the second codebook size
- the processing module is specifically configured to:
- determining a codebook size of the feedback information is the first codebook size
- determining a codebook size of the feedback information is the second codebook size
- the codebook size of the feedback information is a predefined codebook size, and the predefined codebook size is the first codebook size or the second codebook size .
- the processing module is specifically configured to:
- determining a codebook size of the feedback information is The first codebook size
- determining a codebook size of the feedback information is The second codebook size
- the codebook size of the feedback information is the first codebook size or the second codebook indicated by the second indication information Size;
- the receiving module is specifically configured to: receive the downlink data in a downlink subframe scheduled by the base station, where the base station adjusts The downlink subframe of the degree constitutes a second downlink subframe set, and the second downlink subframe set is a subset of the first downlink subframe set;
- the processing module is specifically configured to:
- determining a codebook size of the feedback information is the first codebook size
- the second downlink subframe set includes only the downlink subframe that does not belong to the first subset in the second subset, determining that the codebook size of the feedback information is the first codebook size or the Second codebook size;
- the second downlink subframe set includes a downlink subframe in the first subset and a downlink subframe that does not belong to the first subset in the second subset, and the second downlink subframe set does not include Determining, by the first subset and the downlink subframes other than the second subset, that the codebook size of the feedback information is the second codebook size.
- the processing module is further configured to:
- the encoded feedback information is scrambled by using a first scrambling code
- the encoded feedback information is scrambled by using a second scrambling code.
- the processing module is further configured to:
- the codebook size is the first codebook size, encoding the feedback information according to the first codebook size to obtain first encoded feedback information; determining a first scale factor of the base station configuration, and Determining, according to the first scale factor, a first number of symbols, where the first number of symbols is a number of symbols required to map the first encoded feedback information into the PUSCH; according to the first number of symbols Mapping the first encoded feedback information onto the PUSCH;
- processing module is further configured to:
- the codebook size is the second codebook size, encoding the feedback information according to the second codebook size to obtain second encoded feedback information; determining a second scale factor of the base station configuration, and Determining, according to the second scale factor, a second symbol number, where the second symbol number is a number of symbols required to map the second encoded feedback information into the PUSCH; according to the second symbol The number maps the second encoded feedback information onto the PUSCH.
- the receiving module is further configured to: receive downlink control information sent by the base station, and Receiving downlink data according to the downlink control information in a downlink subframe scheduled by the base station;
- the first indication information is information in the downlink control information.
- the second indication information is used in scheduling uplink scheduling information of the PUSCH information.
- an embodiment of the present invention provides a base station, including:
- a sending module configured to send downlink data to the user equipment UE
- a processing module configured to determine an uplink subframe for receiving feedback information corresponding to the downlink data sent by the UE, where the downlink data is sent by the sending module, and the first subframe associated with the uplink subframe is
- the downlink subframe set includes a first subset and a second subset, where the first subset is a true subset of the second subset;
- the processing module is further configured to determine a codebook size of the feedback information, where the codebook size is a first codebook size or a second codebook size; wherein the first codebook size corresponds to a The number of downlink subframes included in the first subset, where the second codebook size corresponds to the number of downlink subframes included in the second subset;
- a receiving module configured to receive feedback information mapped on the physical uplink shared channel PUSCH sent by the UE in the uplink subframe according to the codebook size of the feedback information that is determined by the processing module.
- the sending module is further configured to: notify, by sending the first indication information, the determined codebook size of the feedback information to the UE; or,
- the codebook size of the feedback information determined by the processing module is the first codebook size.
- the sending module is further configured to: notify, by sending the second indication information, the determined codebook size of the feedback information to the UE; or,
- the processing module determines The codebook size of the feedback information is a predefined codebook size, and the predefined codebook size is the first codebook size or the second codebook size.
- the sending module is further configured to: notify, by sending the first indication information and the second indication information, the determined codebook size of the feedback information To the UE; or,
- the codebook size of the feedback information determined by the processing module is the first codebook size
- the sending module does not send the first indication information to the UE, but the sending module notifies the UE of the determined codebook size of the feedback information by sending the second indication information;
- the codebook size of the feedback information determined by the processing module is the first codebook size.
- the processing module is further configured to:
- the first scrambling code is that the UE scrambles the encoded feedback information when determining that the codebook size of the feedback information is the first codebook size;
- the encoded feedback information is information obtained by the UE encoding the feedback information according to the codebook size.
- the sending module is further configured to: send downlink control information to the UE, and Transmitting downlink data to the UE in a downlink subframe scheduled by the base station;
- the first indication information is information in the downlink control information.
- the second indication information is used in scheduling uplink scheduling information of the PUSCH information.
- the user equipment UE receives downlink data; the UE determines an uplink subframe for feeding back feedback information corresponding to the downlink data, and determines a first downlink subframe set associated with the uplink subframe, where The first downlink subframe set includes a first subset and a second subset, where the first subset is a true subset of the second subset; further, the UE determines the feedback information.
- the codebook size is a first codebook size or a second codebook size, where the first codebook size corresponds to the number of downlink subframes included in the first subset, and the second codebook size corresponds to The number of downlink subframes included in the second subset; further, the UE encodes the feedback information according to the codebook size to obtain encoded feedback information; further, the UE sends the encoded feedback information Mapping to the physical uplink shared channel PUSCH, and transmitting the encoded feedback information to the base station in the uplink subframe by using the PUSCH; that is, the UE may be configured according to the downlink subframe actually scheduled by the base station.
- the case determines the codebook size of the feedback information, thereby achieving not only ACK/NACK information that can carry more bits in the PUSCH, but also improving the performance of uplink data in ACK/NACK and PUSCH when a predetermined amount of resources is used. Or, under the premise of ensuring uplink data performance in the same ACK/NACK and PUSCH, resource overhead is saved.
- Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for transmitting feedback information in a communication system according to the present invention
- Embodiment 2 is a schematic flowchart of Embodiment 2 of a method for transmitting feedback information in a communication system according to the present invention
- Embodiment 3 is a schematic structural diagram of Embodiment 1 of a UE according to the present invention.
- Embodiment 4 is a schematic structural diagram of Embodiment 2 of a UE according to the present invention.
- FIG. 5 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
- FIG. 6 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
- the ACK/NACK information and the uplink data are mapped to the PUSCH in order to maintain the uplink single carrier characteristic of the LTE system.
- the PUSCH may be scheduled by a downlink control channel, for example, the PUSCH on the uplink subframe 2 of the uplink and downlink subframe configuration 2 in the TDD system is the downlink subframe in the previous radio frame.
- the downlink control channel sent on 8 is scheduled; or,
- the PUSCH may also be a semi-persistently scheduled data channel, that is, the downlink control channel does not need to be used for scheduling, and the UE knows in advance that the semi-persistently scheduled uplink data channel needs to be sent on the uplink subframe 2.
- the LTE system supports Frequency Division Multiplexing (FDD) CA, Time Duplexing Division (TDD) CA, and FDD+TDD CA.
- the TDD CA includes: TDD CAs of the same uplink and downlink configuration and different TDD CA configured for uplink and downlink.
- the PUCCH transmission mode in the CA mode includes: a channel selection mode and a PUCCH format 3; wherein the channel selection mode uses PUCCH format 1a/1b for ACK/NACK feedback, but supports up to 2 carriers of CA; PUCCH format 3 mode uses discrete
- the transmission structure of the Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) can support up to 20 ACK/NACK bit transmissions, and can support 5 TDD CA of the carrier; for example, the TDD uplink and downlink configuration is 2, the uplink subframe 2 of one carrier can support the feedback of 4 ACK/NACK bits, and the CA of the TDD uplink and downlink configuration 2 of 5 carriers can support 20 ACKs.
- DFT-S-OFDM Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing
- the /NACK bit that is, if the uplink data needs to be sent in the uplink subframe in which the UE sends the ACK/NACK information
- the current PUSCH can carry up to 20 ACK/NACK bits.
- the base station configures the N downlink subframes associated with the uplink subframe n for the UE, but at a certain time, only the M downlink subframes in the N may be actually scheduled (M ⁇ N, M and N is a positive integer), and the existing codebook size method for calculating feedback information always determines the codebook size of the feedback information based on N.
- the PUSCH may need to carry more ACK/NACK information, such as more than 20 bits, in some scenarios.
- a CA with more carriers such as 10 carrier CA
- 10 TDD uplink and downlink configuration 2 carrier CA need to feed back 40-bit ACK/NACK
- the PUSCH may need to carry ACK/NACK information greater than 20 bits when the TDD carrier of the frame or the carrier of different uplink and downlink configurations is combined.
- the codebook size is the original number of ACK/NACK or the number of bits before encoding, based on the number of downlink subframes in the configured aggregated carrier set. Determining the codebook size means that if each downlink subframe is scheduled by one codeword, and each downlink subframe corresponds to one bit of ACK/NACK feedback, the codebook size is N; if each downlink subframe is Two codewords are scheduled, and each downlink subframe corresponds to two bits of ACK/NACK feedback, and the codebook size is 2*N.
- FIG. 1 is a schematic flowchart of Embodiment 1 of a method for transmitting feedback information in a communication system according to the present invention. As shown in FIG. 1 , the method in this embodiment may include:
- the user equipment UE receives downlink data.
- the LTE system supports two modes of FDD and TDD.
- the FDD system transmits downlink and uplink on different carriers.
- uplink and downlink are transmitted at different times of the same carrier.
- one carrier includes: downlink. a subframe, an uplink subframe, and a special subframe, where the special subframe includes: a Downlink Pilot Time Slot (DwPTS), a Guard Period (GP), and an Uplink Pilot Time Slot (Uplink). Pilot Time Slot (referred to as UpPTS) is divided into three parts.
- the GP is mainly used for downlink to uplink device conversion time and propagation delay compensation.
- the downlink data can be transmitted in the DwPTS, but the PUSCH cannot be transmitted in the UpPTS.
- Table 1 shows the uplink and downlink configuration tables of different TDDs in the LTE system.
- LTE currently supports seven different TDD uplink and downlink configurations, as shown in Table 1, where D represents a downlink subframe, S represents a special subframe, and U represents an uplink subframe. frame.
- the UE may receive the downlink data in a downlink subframe scheduled by the base station, where the downlink subframe scheduled by the base station constitutes a second downlink subframe set, that is, the second downlink
- the downlink subframe in the subframe set is a subframe that is actually scheduled by the base station.
- the method further includes: receiving, by the UE, downlink control information sent by the base station, such as receiving downlink control information sent by the base station by using a downlink control channel; and correspondingly, step S101 includes: scheduling, by the UE, the base station Receiving downlink data according to the downlink control information in a downlink subframe, such as by physical
- the downlink shared channel Physical Downlink Shared Channel, PDSCH for short
- the downlink control channel may be a physical downlink control channel (Physical Downlink)
- the control channel (referred to as PDCCH) or the enhanced physical downlink control channel (Enhanced PDCCH, referred to as EPDCCH);
- the downlink control information may include: scheduling information of the PDSCH or the PUSCH, where the scheduling information may include: channel resource allocation Control information such as information and modulation and coding methods.
- the UE determines an uplink subframe used for feeding back feedback information corresponding to the downlink data, and determines a first downlink subframe set associated with the uplink subframe.
- the UE feeds back the ACK/NACK information in the uplink subframe n;
- Table 2 is the feedback ACK in the TDD system.
- the timing relationship table of the /NACK information the timing relationship between the downlink subframe in which the downlink data is received through the PDSCH and the uplink subframe in which the feedback information corresponding to the downlink data is fed back is as shown in Table 2, wherein the sub-list The subframe corresponding to the frame label n is an uplink subframe n for feeding back ACK/NACK information, and the identifier number corresponding to each uplink subframe label n for different uplink and downlink configurations indicates that feedback nk needs to be performed in the uplink subframe n.
- the UE determines, according to a timing relationship between a preset downlink subframe and an uplink subframe used for feeding back feedback information corresponding to downlink data received in the downlink subframe, An uplink subframe of the feedback information corresponding to the downlink data, and the uplink subframe
- the first downlink subframe set associated with the frame optionally, the feedback information is information for confirming whether the downlink data is correctly received, such as acknowledgment ACK information or non-acknowledgment NACK information
- the frame set includes all downlink subframes that the base station configures for the uplink subframe.
- the first downlink subframe set associated with the uplink subframe 2 of the primary carrier is the subframe 4 of the carrier 1 to 5, 5, 6 and 8, a total of 20 subframes.
- the base station does not normally schedule all the downlink subframes in the first downlink subframe set at a certain time, that is, the second downlink subframe set is a subset of the first downlink subframe set, The number of CA carriers is increased. Since the second downlink subframe set may be much smaller than the first downlink subframe set, the existing codebook based on the first downlink subframe set to determine feedback information is used. The size of the method may generate a large overhead.
- the first downlink subframe set includes a first subset and a second subset, where the A subset is a true subset of the second subset, so that the codebook size of the feedback information is determined according to the number of downlink subframes in the first subset or the second subset, thereby saving resource overhead
- the second subset may be equal to the first downlink subframe set.
- the first downlink subframe set includes only two subsets of the first subset and the second subset, and may further include more than two subsets. Such as the third subset or the fourth subset.
- the UE may predetermine the first subset and the second subset, and determine the first subset and the second subset according to a pre-configuration rule.
- the embodiment of the present invention uses the TDD CA as an example. If the UE is configured with 15 carriers, and the TDD uplink and downlink configurations of the 15 carriers are the same uplink and downlink subframe configuration 2, according to the timing relationship in Table 2 Determining that the uplink subframe 2 of the primary carrier needs to feed back ACK/NACK information corresponding to the data channel in the downlink subframes 4, 5, 6, and 8 of the 15 carriers, and all the downlink subframes (ie, carrier 1) The downlink subframes 4, 5, 6, and 8) of the -15 constitute a first downlink subframe set. (Optionally, the number of downlink subframes in the first downlink subframe set is determined in the prior art.
- the scheduling mode of the data channel of the 15 carriers is not limited in the embodiment of the present invention.
- the independent scheduling is taken as an example for description.
- the embodiment of the present invention may also be extended to TDD CA, TDD, FDD CA, and the like configured for a plurality of different uplink and downlink subframe configurations for the UE.
- the first downlink subframe set includes the first subset and the second subset
- the first subset is a true subset of the second subset, that is, the second subset includes the first subset, and the number of downlink subframes in the second subset is greater than the number
- the downlink subframes having the same subframe number on different carriers are different downlink subframes; the downlink data may be transmitted on the special subframe but may not be transmitted.
- Data, TDD special subframes can also be classified as downlink subframes.
- the first subset includes downlink subframes 4, 5, 6, and 8 of carriers 1 to 5
- the second subset includes downlink subframes 4, 5, 6, and 8 of carriers 1 to 10, and the second subset is visible.
- the first subset is completely included; optionally, the embodiment may further include a third subset, where the third subset includes downlink subframes 4, 5, 6, and 8 of carriers 1-15, that is, The third subset is all pre-configured downlink subframes associated with the ACK/NACK information fed back by the base station for the UE, that is, the third subset is equal to the first downlink subframe.
- a set; a relationship between the first subset and the second subset, a relationship between the second subset and the third subset, and a first subset and a third subset The relationship is similar in structure; the first subset and the second subset may also be partially overlapped; of course, other manners may be used in the embodiments of the present invention, and details are not described herein again.
- the manner of determining the first subset and the second subset according to a pre-configuration rule is as follows: according to a carrier sequence number and/or a subframe sequence number and a threshold value of combining ACK/NACK bits (such as 20) Bits, 21 bits or 22 bits) determining the first subset and the second subset; 1) as the UE determines that the first subset comprises downlink subframes 4, 5, 6 and 8 of carriers 1 to 5 And the second subset includes downlink subframes 4, 5, 6, and 8 of carriers 1 to 10; wherein the first subset is selected by first performing carrier 1 in the order of time domain subframe labels After the downlink subframe is selected, the downlink subframe of the carrier 2 is continuously selected based on the frequency domain carrier label, and the number of downlink subframes defined by the threshold of the number of bits is always obtained; the second subset is selected in a manner similar to the foregoing.
- ACK/NACK bits such as 20) Bits, 21 bits or 22 bits
- the first subset includes carrier 1 Downstream subframes 4, 5, 6, and 8 to 2 and downlink subframes 4 and 5 of carrier 3
- the second subset includes the In addition to all downlink subframes of the subset, downlink subframes 6 and 8 of carrier 3 and downlink subframes 4, 5, 6, and 8 of carriers 3 to 4 are also included, at which time different subframes on one carrier are divided into In the different downlink subframe sets, it can be seen that the first subset and the second subset are selected according to the first time domain subframe number and the frequency domain carrier number in the example; the second set partitioning mode is: the first sub The set includes downlink subframes 4, 5, 6, and 8 of carriers 1 to 2, and the second subset includes downlink subframes 4 of carriers 3 to 5 in addition to all downlink subframes of the first subset.
- the partitioning rule of this example is to determine the maximum carrier that does not exceed the threshold of the number of bits according to the carrier, the subframe number, and the number of bits threshold.
- the downlink sub-frames in the number are a certain set.
- the different sub-frames on the same carrier cannot be divided into multiple incomplete intersecting sets. Otherwise, the number of downlink sub-frames in a certain set is less than the above-mentioned number-of-bits threshold.
- the first subset and the second subset may also be selected according to the order of the frequency domain carrier number and the time domain subframe number in combination with the bit number threshold.
- the UE may further determine the first subset and the second subset according to the indication signaling sent by the base station, for example, the base station notifies the dividing rule to the UE by using the indication signaling;
- the UE directly receives the first subset and the second subset that are determined by the base station, if the base station directly notifies the UE that the first subset is divided and the The second subset.
- the UE may also determine the first subset and the second subset by other means, which is not limited in the embodiment of the present invention.
- the UE determines a codebook size of the feedback information, where the codebook size is a first codebook size or a second codebook size.
- the UE may be configured according to the codebook size indication information sent by the base station to the UE after determining the codebook size of the feedback information, or the second downlink subframe set, the first Determining, by the relationship between the subset and the second subset, a codebook size of the feedback information is a first codebook size or a second codebook size, wherein the first codebook size corresponds to the first The number of downlink subframes included in a subset (ie, the first codebook size is determined according to the number of downlink subframes included in the first subset), and the second codebook size corresponds to the second subframe The number of the downlink subframes included in the set (that is, the size of the second codebook is determined according to the number of downlink subframes included in the second subset); that is, the UE may be configured according to the downlink subframe actually scheduled by the base station.
- Determining the codebook size of the feedback information so that the determined codebook size of the feedback information is less than or equal to the number of downlink subframes in the first downlink subframe set determined by the UE in the prior art.
- the size of the codebook therefore, not only can achieve more in the PUSCH Patent number ACK / NACK information, and increases in the use of a predetermined amount of resources the ACK performance / NACK and PUSCH in the uplink data, or the premise of ensuring the same ACK / NACK and a PUSCH uplink data performance and save the resource overhead.
- the codebook size indication information may be first indication information, second indication information, or
- the combination information of the first indication information and the second indication information is as follows:
- the determining, by the UE, the codebook size of the feedback information includes:
- the UE receives the first indication information sent by the base station, and the first indication information refers to Decoding the first codebook size, the UE determining that the codebook size of the feedback information is the first codebook size; or
- the UE determines that the codebook size of the feedback information is the second codebook. Size; or
- the UE determines that the codebook size of the feedback information is the first codebook size.
- the first possible implementation manner is: after determining that the codebook size of the feedback information is the first codebook size, the base station includes the first indication information of the first codebook size. Notifying the UE if the UE receives the first indication information sent by the base station (the first indication information indicates a code of the feedback information determined by the base station) The size is the first codebook size, and the UE directly determines that the codebook size of the feedback information is the first codebook size.
- the second possible implementation manner is: after determining that the codebook size of the feedback information is the second codebook size, the base station includes first indication information of the second codebook size (ie, a codebook size indication) Notifying the UE, if the UE receives the first indication information sent by the base station, where the first indication information indicates that the codebook size of the feedback information determined by the base station is the first The second codebook size), the UE directly determines that the codebook size of the feedback information is the second codebook size.
- a third possible implementation manner is: if the UE does not receive the first indication information, the UE determines that the codebook size of the feedback information is the first codebook size.
- the first indication information is information in the downlink control information, where the first indication information is information in scheduling downlink control information of a downlink subframe in the second downlink subframe set ( Or the first indication information may be carried in the control channel of the downlink subframe in the second downlink subframe set by the base station; optionally, the first indication information may be used to schedule the secondary carrier.
- the two-bit field in the secondary PDCCH of the PDSCH indicates, or is indicated by a two-bit field in the primary PDCCH for scheduling the PDSCH on the primary carrier, and the value of the Downlink Assignment Index (DAI) field in the primary PDCCH is More than 1; optionally, the parsing information for indicating the status of each bit field of the first indication information is configured in advance for the UE, so that the UE receives the An indication according to the corresponding bit field and the pre-configured solution Determining the codebook size of the feedback information indicated by the base station, such as configuring two bits in the secondary PDCCH and two bits in the primary PDCCH in which the DAI field is greater than 1 for the UE in advance
- the analysis information of the four states of the field for example, the UE acquires the parsing information of the four states of the two bits, such as ⁇ 00, 01, 10, 11 through high-level Radio Resource Control (RRC) signaling.
- RRC Radio Resource Control
- the UE receives the secondary PDCCH, where The 2-bit state is 01, and the UE determines, according to the first indication information, that the codebook size of the feedback information is the first codebook size.
- the first downlink subframe set further includes a third subset, a fourth subset, and a fifth subset, correspondingly, the third codebook size, the fourth codebook size, and the fifth code are further included. In this size, the two bits cannot represent all five codebook sizes.
- the first indication information may be indicated by a three-bit field in a secondary PDCCH for scheduling a PDSCH on a secondary carrier, or by scheduling a primary A three-bit field in the primary PDCCH of the PDSCH on the carrier indicates that the value of the DAI field in the primary PDCCH is greater than one.
- the first indication information may be represented by other manners in the embodiment of the present invention, and details are not described herein again.
- the UE may not receive the first indication information in some cases.
- the UE only receives the PDSCH sent by the base station for scheduling the primary carrier.
- the primary PDCCH that is, the first indication information is not included in the primary PDCCH
- the control channel the UE cannot determine the codebook size of the feedback information according to the first indication information, and if it is determined that the codebook size of the feedback information is the second codebook size, it means The UE does not miss all the control channels scheduling the downlink subframes other than the first subset, which is consistent with the understanding of the base station, and the probability is low.
- the risk of selecting the first codebook size is the UE. Missing the scheduling of the first subset All control channels of a row subframe will be inconsistent with the base station's understanding of the codebook size, and this probability is obviously very low. Therefore, since the UE misses more control channels, the probability is less than the miss detection.
- the UE determines that the codebook size of the feedback information is the first codebook size; that is, some of the PDCCHs actually received by the UE include the first indication.
- the information does not include the first indication information; once the UE receives only the PDCCH that does not include the first indication information, the UE determines that the codebook size of the feedback information is the first codebook. size.
- the base station in order to ensure that the base station and the UE understand the codebook size of the feedback information, the base station only sends a primary PDCCH for scheduling the PDSCH on the primary carrier to the UE, or is used for scheduling.
- the first codebook size receives the encoded ACK/NACK information fed back by the UE.
- the determining, by the UE, the codebook size of the feedback information includes:
- the UE determines that the codebook size of the feedback information is the first codebook. Size; or
- the UE determines that the codebook size of the feedback information is the second codebook. Size; or
- the UE determines that the codebook size of the feedback information is a predefined codebook size, and the predefined codebook size is the first codebook size or location.
- the second codebook size is described.
- the first possible implementation manner is: after determining that the codebook size of the feedback information is the first codebook size, the base station includes the second indication information of the first codebook size. Notifying the UE, if the UE receives the second indication information sent by the base station, where the second indication information indicates the code of the feedback information determined by the base station The size is the first codebook size, and the UE directly determines that the codebook size of the feedback information is the first codebook size.
- the second possible implementation manner is: after determining that the codebook size of the feedback information is the second codebook size, the base station includes second indication information (that is, a codebook size indication) that includes the second codebook size.
- the UE directly determines that the codebook size of the feedback information is the second codebook size.
- a third possible implementation manner is: if the UE does not receive the second indication information, the UE determines that the codebook size of the feedback information is a predefined codebook. The size, the predefined codebook size is the first codebook size or the second codebook size.
- the second indication information is information used in scheduling uplink scheduling information of the PUSCH, where the second indication information is a control channel for scheduling a PUSCH currently used for carrying ACK/NACK and uplink data ( That is, the indication information in the uplink scheduling grant (or the second indication information is carried in the control channel in which the base station schedules the PUSCH); optionally, the second indication information may be in the downlink in the uplink scheduling grant.
- the indication field of the Uplink_Downlink Assignment Indicator (UL_DAI) and the Uplink Index (UL_index) in the uplink scheduling grant or the newly added bit is indicated, for example, by adding 1 bit or the current 2 bits of UL_DAI.
- the parsing information used to indicate each state of the corresponding bit field of the second indication information is configured in advance for the UE, so that the UE sends the base station to receive Determining, according to the corresponding bit field and the pre-configured the parsing information, a codebook size of the feedback information indicated by the base station, if the second indication is represented by 1 bit
- the two states of the 1-bit are ⁇ 0, 1 ⁇ , respectively, and the corresponding parsing information is ⁇ first codebook size, second codebook size ⁇ , respectively, based on the pre-configuration information, if the UE Receiving the uplink scheduling information (ie, the second indication information), where the 1-bit state is 0 (ie, the second indication information indicates the first codebook size), and the UE is according to the The two indication information determines
- the UE may not receive the second indication information in some cases, for example, when the uplink scheduling grant is not sent in the scenario of the semi-static PUSCH scheduling, the UE may determine the feedback.
- the codebook size of the information is a predefined codebook size, and the predefined codebook size is the first codebook size or the second codebook size; correspondingly, in order to ensure the base station and the UE
- the codebook size of the feedback information is consistently understood, and the base station determines that the codebook size of the feedback information is the predefined codebook size (optionally, pre-configured in the scenario, determining The codebook size of the feedback information should be which codebook size).
- the determining, by the UE, the codebook size of the feedback information includes:
- the first indication information and the second indication information indicate the first codebook size, and the UE determines that the codebook size of the feedback information is the first codebook size;
- the UE determines the feedback The codebook size of the information is the second codebook size
- the UE determines that the codebook size of the feedback information is the first codebook size
- the UE determines that the codebook size of the feedback information is the first codebook size indicated by the second indication information or The second codebook size; or
- the UE determines that the codebook size of the feedback information is the first codebook size.
- the base station may jointly indicate the codebook size of the feedback information by using the first indication information and the second indication information; optionally, the first indication information is information in the downlink control information.
- the first indication information is used to schedule information in the downlink control information of the downlink subframe in the second downlink subframe set, and the manner of the first indication information is specifically described in the foregoing UE according to the foregoing.
- the first indication information determines an indication manner part of the first indication information in the codebook size of the feedback information, and details are not described herein again.
- the second indication information is information used in scheduling uplink scheduling information of the PUSCH, where the second indication information is a control channel for scheduling a PUSCH currently used for carrying ACK/NACK and uplink data ( That is, the indication information in the uplink scheduling grant); optionally, the second indication information may be indicated by an indication field of the UL_DAI, the UL_index, or a new bit, such as by adding 1 bit or the current 2 bits of the UL_DAI. One bit indicates the codebook size of the feedback information, or may further indicate a codebook size of more levels by at least two bits.
- the parsing information used to indicate each state of the corresponding bit field of the first indication information and the second indication information is configured in advance for the UE, so that the UE sends the base station to receive And determining, according to the corresponding bit field and the pre-configured the parsing information, a codebook size of the feedback information indicated by the base station, when the first indication information and/or the second indication information.
- the first indication information is represented by 2 bits
- the four bit states of the first indication information are ⁇ 00, 01, 10, 11 ⁇
- the corresponding parsing information is respectively ⁇ first codebook size, first codebook size, second codebook size, second codebook size ⁇
- the second indication information is represented by 1 bit
- the two states of the 1 bit are respectively ⁇ 0, 1 ⁇
- correspondingly parsing information is ⁇ first codebook size, second codebook size ⁇
- the codebook size is the second codebook size; 3) when the UE does not receive the first indication message, the UE may directly determine that the codebook size of the feedback information is the first codebook size; 4) When the UE does not receive the first indication information but receives the second indication information, the UE determines that the codebook size of the feedback information is the second If the first codebook size or the second codebook size indicated by the information is ⁇ 1 ⁇ , the UE directly determines that the codebook size of the feedback information is the first The second codebook size; 5) when the UE does not receive the first indication information and the second indication information, the UE directly determines that the codebook size of the feedback information is the first codebook size, correspondingly, if When the base station does not send the first indication information and the second indication information to the UE, the base station may also receive the encoded ACK/NACK fed back by the UE according to the first codebook size. information.
- the two bit states of the 1-bit may be further subdivided based on the first codebook size or the second codebook size indicated by the first indication information (optionally, the second indication information).
- the third codebook size may also be indicated. If the bit status of the first indication information is 10, the second codebook size is indicated (ie, the first indication information indicates the second codebook size).
- the second subset 1) if the bit status of the second indication information is 0, that is, according to the second codebook size indicated by the first indication information, The second codebook size corresponding to the second subset is used to encode the ACK/NACK, the UE determines that the codebook size of the feedback information is the second codebook size, and 2) if the second indication information If the bit status is 1, it may be determined that the codebook size of the feedback information is smaller than the second codebook size but larger than the third codebook size of the first codebook size, where the third code The size is determined according to the number of downlink subframes included in the third subset, the third sub The set may be a subset of the second subset and the third subset includes a number of downlink subframes greater than a number of downlink subframes included in the first subset, and a downlink subset included in the third subset The frame is different from the first child
- the third subset may include the first subset, or may overlap with the first subset, or
- the second indication information may further indicate a fourth codebook size, as follows: the UE may not receive the first indication information in some cases, and may determine, according to two schemes, The codebook size of the feedback information; 1) The first scheme is: the UE directly determines that the codebook size of the feedback information is the first codebook size, so as to correspond to the first subset The first codebook size encodes an ACK/NACK, and correspondingly, the base station also receives the encoded ACK/NACK information according to the first codebook size; 2) the second scheme is: if the UE receives The second indication information, the UE determines, according to the second indication information, that the codebook size of the feedback information is the first codebook size or the second codebook size, optionally, the second indication
- the information may be indicated by an indication field of the UL_DAI, the UL_index, or a newly added bit, for example, the codebook size of the feedback information may be indicated by adding 1 bit or 1 bit of the current 2 bits of the UL_DAI, optional
- the process of determining, by the UE, the codebook size of the feedback information according to the relationship between the second downlink subframe set, the first subset, and the second subset is as follows:
- the step S101 includes: the UE receiving the downlink data in a downlink subframe scheduled by the base station, where the downlink subframe scheduled by the base station constitutes a second downlink subframe set, and the second downlink The subframe set is a subset of the first downlink subframe set;
- a codebook size of the feedback information including:
- the UE determines that the codebook size of the feedback information is the first codebook size
- the UE determines that the codebook size of the feedback information is the first codebook size. Or the second codebook size;
- the UE determines that the codebook size of the feedback information is the second codebook size.
- the UE encodes the feedback information according to the codebook size to obtain encoded feedback information.
- the UE performs RM coding or convolutional coding on the feedback information according to the codebook size determined in step S103, such as the first codebook size or the second codebook size.
- the coded feedback information is obtained.
- other coding modes may be used in the embodiment of the present invention, and details are not described herein again.
- the ACK/NACK sequence in the codebook may be performed according to the carrier number and the subframe number, and the ACK/NACK corresponding to the scheduled downlink subframe is not used in the first subset or the second subset. Fill in the position at the position.
- the UE maps the encoded feedback information to a physical uplink shared channel (PUSCH), and sends the encoded feedback information to the base station in the uplink subframe by using the PUSCH.
- PUSCH physical uplink shared channel
- the UE generates a PUSCH for transmitting uplink data in the uplink subframe, and then performs rate matching and symbol modulation on the encoded feedback information, and then maps the encoded feedback information to And transmitting, by the PUSCH, the uplink data and the encoded feedback information that need to be sent in the uplink subframe to the base station by using the PUSCH, so as to maintain an uplink single carrier characteristic of the LTE system, To improve the efficiency of the uplink transmit power.
- the user equipment UE receives downlink data; the UE determines an uplink subframe for feeding back feedback information corresponding to the downlink data, and determines a first downlink subframe set associated with the uplink subframe.
- the first downlink subframe set includes a first subset and a second subset, where The first subset is a true subset of the second subset; further, the UE determines a codebook size of the feedback information, wherein the codebook size is a first codebook size or a second codebook a size, the first codebook size corresponds to a number of downlink subframes included in the first subset, and the second codebook size corresponds to a number of downlink subframes included in the second subset; further, The UE encodes the feedback information according to the codebook size to obtain encoded feedback information; further, the UE maps the encoded feedback information to a physical uplink shared channel PUSCH, and passes the PUSCH in the Sending the encoded feedback information to the base station in the up
- the base station schedules the first subset a downlink subframe, and scheduling a downlink subframe other than the first subset in the second subset, where the base station expects the UE to use the second codebook size to encode an ACK/NACK,
- the UE misses the control channel causing the UE to receive only the control channel for scheduling the downlink subframe in the first subset
- the UE uses the first codebook size to encode the ACK/
- the NACK is inconsistent with the understanding of the base station, which may result in a final ACK/NACK decoding error.
- the base station adopts
- the scrambling process of the different scrambling codes can be used to obtain the codebook size of the feedback information used by the UE to encode the feedback information, and the codebook size of the base station and the UE for the feedback information does not occur. Understand inconsistency problem.
- the method before the mapping, by the UE, the encoded feedback information to the PUSCH, the method further includes:
- the UE scrambles the encoded feedback information by using a first scrambling code
- the UE scrambles the encoded feedback information by using a second scrambling code.
- the UE uses the first scrambling code to scramble the encoded feedback information; if the determined feedback is The codebook size of the information is the second codebook size, and the UE uses the encoded feedback information.
- the second scrambling code is scrambled, so that the base station performs descrambling processing by using different scrambling codes to learn the codebook size of the feedback information determined by the UE, so that the UE understands and works for the codebook size.
- the base stations are consistent.
- the UE encodes the feedback information according to the codebook size to obtain encoded feedback information, including:
- the UE encodes the feedback information according to the first codebook size to obtain first encoded feedback information
- mapping by the UE, the encoded feedback information to the PUSCH, including:
- the UE encodes the feedback information according to the codebook size to obtain encoded feedback information, including:
- the UE encodes the feedback information according to the second codebook size to obtain second encoded feedback information
- mapping by the UE, the encoded feedback information to the PUSCH, including:
- the UE maps the second encoded feedback information to the PUSCH according to the second number of symbols.
- the first codebook size and the second codebook size corresponds to the second subset
- the first codebook size and the second The ACK/NACK original bit number of the codebook size representation is different, wherein the second codebook size is larger than the first codebook size, and therefore, based on the first codebook size or the second codebook size
- the first scale factor or the second scale factor is independently configured to be based on the first codebook size or the second codebook size. The encoded ACK/NACK performance is consistent.
- the UE encodes the feedback information according to the first codebook size to obtain first encoded feedback information; further, the UE determines a first scale factor configured by the base station, and according to the first ratio The factor determines a first number of symbols to be occupied by mapping the first encoded feedback information to the PUSCH; further, the UE maps the first encoded feedback information to the first symbol number according to the first number of symbols Said on the PUSCH.
- the UE encodes the feedback information according to the second codebook size to obtain second encoded feedback information; further, the UE determines a second scale factor configured by the base station, and determining, according to the second scale factor, a second symbol number that needs to be occupied by mapping the second encoded feedback information to the PUSCH; further, the UE according to the The second number of symbols maps the second encoded feedback information onto the PUSCH.
- the first scale factor and the second scale factor represent a ratio of uplink data in the PUSCH to an encoding rate of the ACK/NACK, which may be obtained by the following formula:
- the M PUSCH-initial indicates the number of frequency domain subcarriers occupied by the PUSCH scheduled for the current uplink data in the initial scheduling, and the M PUSCH indicates the number of frequency domain subcarriers occupied by the PUSCH in which the current uplink data is scheduled in the current subframe.
- N PUSCH-initial indicates the number of time domain symbols occupied by the PUSCH scheduled for uplink data in the initial scheduling; Kr is the original number of bits of uplink data before encoding, C is the number of encoded blocks of uplink data, and O is ACK/NACK.
- the codebook size, Q' is the number of modulation symbols occupied by the encoded ACK/NACK in the PUSCH; the product of 4 and M indicates that the ACK/NACK occupies at most the modulation symbol on the 4 OFDM symbols on the PUSCH, and the product of M and N Indicates the number of modulation symbols scheduled for uplink data, and ⁇ PUSCH indicates the ratio of the uplink data in the PUSCH to the coding rate of the ACK/NACK, that is, the first scale factor or the second scale factor.
- FIG. 2 is a schematic flowchart diagram of Embodiment 2 of a method for transmitting feedback information in a communication system according to the present invention.
- the base station side is described in detail on the basis of the first embodiment of the method for transmitting feedback information in the foregoing communication system.
- the method in this embodiment may include:
- the base station sends downlink data to the user equipment UE.
- the base station may send downlink data to the UE in a downlink subframe scheduled by the base station, where the downlink subframe scheduled by the base station constitutes a second downlink subframe set, that is, The downlink subframe in the second downlink subframe set is a subframe that is actually scheduled by the base station.
- the method further includes: the base station sending downlink control information to the UE, where the base station sends downlink control information to the UE by using a downlink control channel, and is scheduled to be downlinked by the PDSCH in the base station.
- the downlink data is sent to the UE in a subframe; optionally, the downlink control channel may be a PDCCH or an EPDCCH.
- the base station determines an uplink subframe for receiving feedback information corresponding to the downlink data sent by the UE.
- the base station determines, according to a timing relationship between a preset downlink subframe and an uplink subframe used by the UE to feed back feedback information corresponding to downlink data received in the downlink subframe.
- the information that all the pre-configured downlink subframes associated with the uplink subframe constitute a first downlink subframe set (ie, the first downlink subframe set includes all downlinks configured by the base station for the uplink subframe) frame).
- the first downlink subframe set associated with the uplink subframe 2 of the primary carrier is the subframe 4 of the carrier 1 to 5, 5, 6 and 8, a total of 20 subframes.
- the base station does not normally schedule all the downlink subframes in the first downlink subframe set at a certain time, that is, the second downlink subframe set is a subset of the first downlink subframe set, The number of CA carriers is increased. Since the second downlink subframe set may be much smaller than the first downlink subframe set, the existing codebook based on the first downlink subframe set to determine feedback information is used. The size of the method may generate a large overhead.
- the first downlink subframe set includes a first subset and a second subset, where the A subset is a true subset of the second subset, so that the codebook size of the feedback information is determined according to the number of downlink subframes in the first subset or the second subset, thereby saving resource overhead
- the second subset may be equal to the first downlink subframe set.
- the second downlink subframe set includes only two subsets of the first subset and the second subset, and may further include more than two subsets, such as The third subset or the fourth subset.
- the base station may send the division rule indication signaling to the UE, so that the UE determines the first subset and the second according to the division rule indication signaling. a subset; or, the base station may directly send the determined first subset and the second subset To the UE.
- the base station determines a codebook size of the feedback information, where the codebook size is a first codebook size or a second codebook size.
- the base station determines a codebook size of the feedback information according to an actual scheduled downlink subframe condition, that is, the base station is configured according to the first subset or the second subset in the second downlink subframe set. And determining, by the set, the codebook size of the feedback information, that is, determining, according to the number of downlink subframes included in the first subset, a first codebook size, as determined according to the number of downlink subframes included in the second subset. That is, the second codebook size, and the codebook size of the determined feedback information is less than or equal to the codebook determined by the UE according to the number of downlink subframes in the first downlink subframe set in the prior art. ruler.
- the base station after determining the codebook size of the feedback information, notifies the UE of the codebook size of the determined feedback information by using codebook size indication information, so that the UE according to the code
- the size indication information determines the codebook size of the feedback information, so that the UE and the base station understand the codebook size of the feedback information, and further, the UE according to the determined codebook size pair
- the feedback information is encoded to obtain the encoded feedback information.
- the codebook size indication information may be the first indication information, the second indication information, or the combination information of the first indication information and the second indication information, where The first indication information is information in the downlink control information, and the second indication information is information used in scheduling uplink scheduling information of the PUSCH.
- the base station receives feedback information mapped on the physical uplink shared channel PUSCH sent by the UE in the uplink subframe according to the determined codebook size of the feedback information.
- the UE maps the encoded feedback information to the physical uplink shared channel PUSCH, and uses the PUSCH to uplink data in the uplink subframe and
- the encoded feedback information is sent to the base station together; correspondingly, the base station receives the uplink data sent by the UE in the uplink subframe according to the determined codebook size of the feedback information.
- Feedback information optionally, the feedback information may be information obtained by the UE by encoding the feedback information according to the codebook size.
- the base station sends the downlink data to the user equipment UE; further, the base station determines an uplink subframe for receiving the feedback information corresponding to the downlink data sent by the UE, where the uplink subframe
- the associated first downlink subframe set includes a first subset and a second subset, the first subset is a true subset of the second subset; further, the base station determines the feedback signal a codebook size, wherein the codebook size is a first codebook size or a second codebook size, and the first codebook size corresponds to a number of downlink subframes included in the first subset, The second codebook size corresponds to the number of downlink subframes included in the second subset; further, the base station receives the UE to send in the uplink subframe according to the determined codebook size of the feedback information.
- the physical uplink uplink shared channel feedback information on the PUSCH; the codebook size of the feedback information may be determined according to the situation of the downlink subframe actually scheduled by the base station, so that not only more bits can be carried in the PUSCH.
- ACK/NACK information and improves the performance of uplink data in ACK/NACK and PUSCH when using a predetermined amount of resources, or saves resource overhead on the premise of ensuring uplink data performance in the same ACK/NACK and PUSCH.
- the specific process of notifying the determined codebook size of the feedback information to the UE by using the code size indication information is as follows:
- the method further includes:
- the base station notifies the UE of the determined codebook size of the feedback information by sending the first indication information;
- the codebook size of the feedback information determined by the base station is the first codebook size.
- the base station notifies the UE of the determined codebook size of the feedback information by sending first indication information (that is, codebook size indication information) to the UE, where the base station determines The codebook size of the feedback information is the first codebook size or the second codebook size.
- first indication information that is, codebook size indication information
- the base station determines that the codebook size of the feedback information is the first codebook size
- the base station notifies the determined first codebook size by sending the first indication information to the a UE (ie, the first indication information indicates that the codebook size of the feedback information determined by the base station is the first codebook size), so that the UE determines the feedback information according to the first indication information.
- the codebook size is the first codebook size.
- the base station does not send the first indication information to the UE, for example, in the FDD system, it means that the base station only sends a primary PDCCH for scheduling a PDSCH on a primary carrier to the UE (ie, the When the first indication information is not included in the primary PDCCH, or for the TDD system, the base station only transmits to the UE, the primary PDCCH for scheduling the PDSCH on the primary carrier and the DAI in the primary PDCCH.
- the codebook size of the feedback information determined by the base station is the first codebook size (correspondingly, if the UE Did not receive the first indication Information, the UE directly determines that the codebook size of the feedback information is the first codebook size).
- the method for indicating the first indication information is specifically described in the foregoing, where the UE determines, according to the first indication information, an indication manner part of the first indication information in a codebook size of the feedback information, I will not repeat them here.
- the method further includes:
- the base station notifies the UE of the determined codebook size of the feedback information by sending the second indication information;
- the codebook size of the feedback information determined by the base station is a predefined codebook size, and the predefined codebook size is the first The codebook size or the second codebook size.
- the base station notifies the UE of the determined codebook size of the feedback information by sending the second indication information (that is, the codebook size indication information) to the UE, where the base station determines The codebook size of the feedback information is the first codebook size or the second codebook size.
- the base station determines that the codebook size of the feedback information is the first codebook size
- the base station notifies, by sending the second indication information, the determined first codebook size to the The UE (ie, the second indication information indicates that the codebook size of the feedback information determined by the base station is the first codebook size), so that the UE determines the feedback information according to the second indication information.
- the codebook size is the first codebook size. If the base station does not send the second indication information to the UE, the codebook size of the feedback information determined by the base station is a predefined codebook size, and the predefined codebook size is the The first codebook size or the second codebook size.
- the method for indicating the second indication information is specifically described in the foregoing, where the UE determines, according to the second indication information, an indication manner part of the second indication information in a codebook size of the feedback information, I will not repeat them here.
- the method further includes:
- the base station notifies the UE of the determined codebook size of the feedback information by sending the first indication information and the second indication information;
- the codebook size of the feedback information determined by the base station is the first codebook size
- the base station does not send the first indication information to the UE, but the base station notifies the UE of the determined codebook size of the feedback information by sending the second indication information;
- the codebook size of the feedback information determined by the base station is the first codebook size.
- the base station notifies the UE of the determined codebook size of the feedback information by sending the first indication information and the second indication information (that is, the codebook size indication information) to the UE.
- the first indication information is information in the downlink control information
- the first indication information is information in scheduling downlink control information of a downlink subframe in the first downlink subframe set.
- the UE determines, according to the first indication information, the indication manner about the first indication information in the codebook size of the feedback information, where not Let me repeat.
- the second indication information is information used in scheduling uplink scheduling information of the PUSCH, where the second indication information is a control channel for scheduling a PUSCH currently used for carrying ACK/NACK and uplink data ( That is, the indication information in the uplink scheduling grant); optionally, the second indication information may be indicated by an indication field of the UL_DAI, the UL_index, or a new bit, such as by adding 1 bit or the current 2 bits of the UL_DAI. One bit indicates the codebook size of the feedback information, or may further indicate a codebook size of more levels by at least two bits.
- the parsing information used to indicate each state of the corresponding bit field of the first indication information and the second indication information is configured in advance for the UE, so that the UE sends the base station to receive And determining, according to the corresponding bit field and the pre-configured the parsing information, a codebook size of the feedback information indicated by the base station, when the first indication information and/or the second indication information.
- the first indication information is represented by 2 bits, and the four bit states of the first indication information are ⁇ 00, 01, 10, 11 ⁇ , and the corresponding parsing information is ⁇ first
- the codebook size, the first codebook size, the second codebook size, and the second codebook size ⁇ assume that the second indication information is represented by 1 bit, and the two states of the 1-bit are respectively ⁇ 0, 1 ⁇ , the corresponding parsing information is ⁇ first codebook size, second codebook size ⁇ ; 1) if the base station determines that the codebook size of the feedback information is the first codebook size, the base station Notifying the UE of the determined codebook size of the feedback information by sending the first indication information, optionally, the 2-bit state is ⁇ 00 ⁇ and the 1-bit state is ⁇ 0 ⁇ ; 2) The base station does not send the first indication information to the UE, and the codebook size of the feedback information determined by the base station is the first codebook size; 3) if the base station determines the code of the feedback information
- the codebook size of the feedback information
- the two bit states of the 1-bit may be further subdivided based on the first codebook size or the second codebook size indicated by the first indication information (optionally, the second indication information).
- the third codebook size may also be indicated. If the bit status of the first indication information is 10, the second codebook size is indicated (ie, the first indication information indicates the second codebook size).
- the codebook of the feedback information determined by the base station may be represented a third codebook size that is smaller than the second codebook size but larger than the first codebook size, wherein the third codebook size is determined according to the number of downlink subframes included in the third subset,
- the third subset can be a subset of the second subset and the The third subset includes a number of downlink subframes greater than the number of downlink subframes included in the first subset, and the third subset includes a downlink subframe that is different from the first subset, optionally, the first The three subsets may contain the first subset, or may overlap or not overlap with the first subset.
- the second indication information may further indicate a fourth codebook size, as follows: the base station may not send the first indication information to the UE in some cases, and may The scheme determines the codebook size of the feedback information: 1) The first scheme is: the codebook size of the feedback information directly determined by the base station is the first codebook size (the code determined by the UE side) 2) The second scheme is: the base station notifies the UE of the determined codebook size of the feedback information by sending the second indication information, so that the UE according to the second indication The information determines the codebook size of the feedback information.
- the second indication information may be indicated by an indication field of the UL_DAI, the UL_index, or a newly added bit, such as by adding 1 bit or the current 2 bits of the UL_DAI.
- the UE is configured in advance to indicate the Each of the corresponding bit fields of the second indication information State solution Parsing information, so that the UE does not receive the first indication information but receives the second second, which is sent by the base station, for notifying the UE of the codebook size determined by the base station.
- the codebook size of the feedback information if the second indication information is represented by 1 bit, the 1 bit
- the two states are respectively ⁇ 0, 1 ⁇ , and the corresponding parsing information is ⁇ first codebook size, fourth codebook size ⁇ , respectively, if the base station determines that the codebook size of the feedback information is the first
- the base station sets the 1-bit state in the uplink scheduling information (ie, the second indication information) to 0, and based on the pre-configuration information, if the UE receives the second indication information, The UE may determine, according to the second indication information, that the codebook size of the feedback information is the first codebook size.
- the encoded feedback information is proposed. Different scrambling codes are used to scramble, and the base station can obtain the codebook size of the feedback information used by the UE to encode the feedback information by using different scrambling codes for descrambling processing, and thus the device does not appear.
- the problem that the base station and the UE do not understand the codebook size of the feedback information is inconsistent.
- the method further includes:
- the base station performs descrambling processing on the first scrambling code, where the first scrambling code is that the UE adds the encoded feedback information when determining that the codebook size of the feedback information is the first codebook size.
- the base station performs descrambling processing on the second scrambling code, where the second scrambling code is when the UE determines that the codebook size of the feedback information is the second codebook size
- the encoded feedback information is scrambled; wherein the encoded feedback information is information obtained by the UE encoding the feedback information according to the codebook size; thus, the base station performs descrambling processing by using different scrambling codes.
- the codebook size of the feedback information determined by the UE may be known, so that the UE understands that the codebook size is consistent with the base station.
- FIG. 3 is a schematic structural diagram of Embodiment 1 of a UE according to the present invention.
- the UE 30 provided in this embodiment may include: a receiving module 301, a processing module 302, and a sending module 303.
- the receiving module 301 is configured to receive downlink data.
- the processing module 302 is configured to determine an uplink subframe for feeding back feedback information corresponding to the downlink data, and determine a first downlink subframe set associated with the uplink subframe, where the downlink data is Receiving, by the receiving module, the first downlink subframe set includes a first subset and a second subset, where the first subset is a true subset of the second subset;
- the processing module 302 is further configured to determine a codebook size of the feedback information, where the codebook size is a first codebook size or a second codebook size, and the first codebook size corresponds to the first The number of downlink subframes included in a subset, where the second codebook size corresponds to the number of downlink subframes included in the second subset;
- the processing module 302 is further configured to: encode the feedback information according to the codebook size to obtain encoded feedback information;
- the processing module 302 is further configured to map the encoded feedback information to the physical uplink shared channel (PUSCH), and control the sending module 303 to send the encoded feedback information in the uplink subframe by using the PUSCH;
- PUSCH physical uplink shared channel
- the sending module 303 is configured to send the encoded feedback information to the base station in the uplink subframe by using the PUSCH.
- processing module is specifically configured to:
- determining a codebook size of the feedback information is the first codebook size
- determining a codebook size of the feedback information is the second codebook size
- processing module is specifically configured to:
- determining a codebook size of the feedback information is the first codebook size
- determining a codebook size of the feedback information is the second codebook size
- the codebook size of the feedback information is a predefined codebook size, and the predefined codebook size is the first codebook size or the second codebook size .
- processing module is specifically configured to:
- the first indication information and the second indication information sent by the base station are received, and the first indication information and the second indication information indicate the first codebook size, determining a codebook of the feedback information The size is the first codebook size; or
- determining a codebook size of the feedback information is The second codebook size
- the codebook size of the feedback information is the first codebook size or the second codebook indicated by the second indication information Size;
- the receiving module is configured to: receive the downlink data in a downlink subframe scheduled by the base station, where the downlink subframe scheduled by the base station constitutes a second downlink subframe set, and the second The downlink subframe set is a subset of the first downlink subframe set;
- the processing module is specifically configured to:
- determining a codebook size of the feedback information is the first codebook size
- the second downlink subframe set includes only the downlink subframe that does not belong to the first subset in the second subset, determining that the codebook size of the feedback information is the first codebook size or the Second codebook size;
- the second downlink subframe set includes a downlink subframe in the first subset and a downlink subframe that does not belong to the first subset in the second subset, and the second downlink subframe set does not include Determining, by the first subset and the downlink subframes other than the second subset, that the codebook size of the feedback information is the second codebook size.
- processing module is further configured to:
- the encoded feedback information is scrambled by using a first scrambling code
- the encoded feedback information is scrambled by using a second scrambling code.
- processing module is further configured to:
- the codebook size is the first codebook size, encoding the feedback information according to the first codebook size to obtain first encoded feedback information; determining a first scale factor of the base station configuration, and Determining, according to the first scale factor, a first number of symbols, where the first number of symbols is a number of symbols required to map the first encoded feedback information into the PUSCH; according to the first number of symbols Mapping the first encoded feedback information onto the PUSCH;
- processing module is further configured to:
- the codebook size is the second codebook size, encoding the feedback information according to the second codebook size to obtain second encoded feedback information; determining a second scale factor of the base station configuration, and Determining, according to the second scale factor, a second number of symbols, where the second number of symbols is a number of symbols required to map the second encoded feedback information to the PUSCH; according to the second number of symbols Mapping the second encoded feedback information onto the PUSCH.
- the receiving module is further configured to: receive downlink control information sent by the base station, and receive downlink data according to the downlink control information in a downlink subframe scheduled by the base station;
- the first indication information is information in the downlink control information.
- the second indication information is information used in scheduling uplink scheduling information of the PUSCH.
- the UE in this embodiment may be used to perform the technical solution in the first embodiment of the method for transmitting the feedback information in the foregoing communication system of the present invention.
- the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 4 is a schematic structural diagram of Embodiment 2 of a UE according to the present invention.
- the UE 40 provided in this embodiment may include a processor 401 and a memory 402.
- the UE 40 may also include a data interface unit 403 that may be coupled to the processor 401.
- the data interface unit 403 is configured to receive/transmit data or information
- the memory 402 is configured to store execution instructions.
- the processor 401 is in communication with the memory 402, and the processor 401 calls the execution instruction in the memory 402 to execute the technical solution in the first embodiment of the method for transmitting feedback information in the communication system. Similar to the technical effect, it will not be described here.
- the foregoing processing module 302 can be implemented by the processor 401.
- the sending module 303 and the receiving module 301 can be implemented by the data interface unit 403, or can be implemented by a transceiver, a transmitter, a receiver, or the like.
- FIG. 5 is a schematic structural diagram of Embodiment 1 of a base station according to the present invention.
- the base station 50 provided in this embodiment may include: a sending module 501, a processing module 502, and a receiving module 503.
- the sending module 501 is configured to send downlink data to the user equipment UE.
- the processing module 502 is configured to determine an uplink subframe for receiving the feedback information corresponding to the downlink data sent by the UE, where the downlink data is sent by the sending module, and the first subframe associated with the uplink subframe is
- the downlink subframe set includes a first subset and a second subset, where the first subset is a true subset of the second subset;
- the processing module 502 is further configured to determine a codebook size of the feedback information, where the codebook size is a first codebook size or a second codebook size, and the first codebook size corresponds to the first codebook size
- the set includes the number of downlink subframes, where the second codebook size corresponds to the number of downlink subframes included in the second subset;
- the receiving module 503 is configured to receive feedback information mapped on the physical uplink shared channel PUSCH sent by the UE in the uplink subframe according to the codebook size of the feedback information that is determined by the processing module.
- the sending module is further configured to: notify, by sending the first indication information, the determined codebook size of the feedback information to the UE; or
- the codebook size of the feedback information determined by the processing module is the first codebook size.
- the sending module is further configured to: notify, by sending the second indication information, the determined codebook size of the feedback information to the UE; or
- the codebook size of the feedback information determined by the processing module is a predefined codebook size, and the predefined codebook size is the The first codebook size or the second codebook size.
- the sending module is further configured to: notify, by sending the first indication information and the second indication information, the determined codebook size of the feedback information to the UE; or
- the codebook size of the feedback information determined by the processing module is the first codebook size
- the sending module does not send the first indication information to the UE, but the sending module notifies the UE of the determined codebook size of the feedback information by sending the second indication information;
- the codebook size of the feedback information determined by the processing module is the first codebook size.
- processing module is further configured to:
- the first scrambling code is determined by the UE Encoding the encoded feedback information when the codebook size of the feedback information is the first codebook size;
- the encoded feedback information is information obtained by the UE encoding the feedback information according to the codebook size.
- the sending module is further configured to: send downlink control information to the UE, and send downlink data to the UE in a downlink subframe scheduled by the base station;
- the first indication information is information in the downlink control information.
- the second indication information is information used in scheduling uplink scheduling information of the PUSCH.
- the base station in this embodiment may be used to perform the technical solution in the second embodiment of the method for transmitting the feedback information in the foregoing communication system of the present invention.
- the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 6 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
- the base station 60 provided in this embodiment may include a processor 601 and a memory 602.
- the base station 60 can also include a data interface unit 603 that can be coupled to the processor 601.
- the data interface unit 603 is configured to receive/transmit data or information
- the memory 602 is configured to store execution instructions.
- the processor 601 is in communication with the memory 602, and the processor 601 calls the execution instruction in the memory 602 to execute the technical solution in the second embodiment of the method for transmitting feedback information in the communication system. Similar to the technical effect, it will not be described here.
- the memory 602 stores programs.
- the program can include program code, the program code including computer operating instructions.
- the memory 602 may include a random access memory (RAM), and may also include a non-volatile memory, such as at least one disk storage.
- the data interface unit 603 includes a receiving/transmitting unit.
- the foregoing processing module 502 can be implemented by the processor 601.
- the sending module 501 and the receiving module 503 can be implemented by the data interface unit 603, or can be implemented by a transceiver, a transmitter, a receiver, or the like.
- the processor may be a general-purpose processor, including a central processing unit (CPU) and a network processor (NP Processor). Etc.; can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
- CPU central processing unit
- NP Processor network processor
- Etc. can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
- DSP digital signal processor
- ASIC application specific integrated circuit
- FPGA field programmable gate array
- the aforementioned program can be stored in a computer readable storage medium.
- the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
Abstract
Description
Claims (32)
- 一种通信系统中反馈信息的传输方法,其特征在于,包括:用户设备UE接收下行数据;所述UE确定用于反馈所述下行数据对应的反馈信息的上行子帧,并确定与所述上行子帧关联的第一下行子帧集合,其中,所述第一下行子帧集合包括第一子集和第二子集,所述第一子集为所述第二子集的真子集;所述UE确定所述反馈信息的码本尺寸,其中,所述码本尺寸为第一码本尺寸或第二码本尺寸,所述第一码本尺寸对应于所述第一子集包括的下行子帧数,所述第二码本尺寸对应于所述第二子集包括的下行子帧数;所述UE根据所述码本尺寸对所述反馈信息进行编码得到已编码反馈信息;所述UE将所述已编码反馈信息映射到物理上行共享信道PUSCH上,并通过所述PUSCH在所述上行子帧中将所述已编码反馈信息发送给所述基站。
- 根据权利要求1所述的方法,其特征在于,所述UE确定所述反馈信息的码本尺寸,包括:若所述UE接收到所述基站发送的第一指示信息且所述第一指示信息指示所述第一码本尺寸,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若所述UE接收到所述基站发送的第一指示信息且所述第一指示信息指示所述第二码本尺寸,所述UE确定所述反馈信息的码本尺寸为所述第二码本尺寸;或者若所述UE未接收到第一指示信息,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求1所述的方法,其特征在于,所述UE确定所述反馈信息的码本尺寸,包括:若所述UE接收到所述基站发送的第二指示信息且所述第二指示信息指示所述第一码本尺寸,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若所述UE接收到所述基站发送的第二指示信息且所述第二指示信息指示所述第二码本尺寸,所述UE确定所述反馈信息的码本尺寸为所述第二码 本尺寸;或者若所述UE未接收到第二指示信息,所述UE确定所述反馈信息的码本尺寸为预定义的码本尺寸,所述预定义的码本尺寸为所述第一码本尺寸或所述第二码本尺寸。
- 根据权利要求1所述的方法,其特征在于,所述UE确定所述反馈信息的码本尺寸,包括:若所述UE接收到所述基站发送的第一指示信息和第二指示信息且所述第一指示信息和所述第二指示信息指示所述第一码本尺寸,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若所述UE接收到所述基站发送的第一指示信息和第二指示信息且所述第一指示信息和所述第二指示信息指示所述第二码本尺寸,所述UE确定所述反馈信息的码本尺寸为所述第二码本尺寸;或者若所述UE未接收到第一指示信息,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若所述UE未接收到第一指示信息,但接收到第二指示信息,所述UE确定所述反馈信息的码本尺寸为所述第二指示信息所指示的所述第一码本尺寸或所述第二码本尺寸;或者若所述UE未接收到第一指示信息和第二指示信息,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求1所述的方法,其特征在于,所述UE接收下行数据,包括:所述UE在所述基站调度的下行子帧中接收所述下行数据,其中,所述基站调度的下行子帧构成第二下行子帧集合,所述第二下行子帧集合为所述第一下行子帧集合的子集;所述UE确定所述反馈信息的码本尺寸,包括:若所述第二下行子帧集合为所述第一子集的子集,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸;若所述第二下行子帧集合只包括所述第二子集中不属于所述第一子集的下行子帧,所述UE确定所述反馈信息的码本尺寸为所述第一码本尺寸或所述第二码本尺寸;若所述第二下行子帧集合包括所述第一子集中的下行子帧以及所述第二子集中不属于所述第一子集的下行子帧且所述第二下行子帧集合不包括所述第一子集和所述第二子集之外的下行子帧,所述UE确定所述反馈信息的码本尺寸为所述第二码本尺寸。
- 根据权利要求1-5中任一项所述的方法,其特征在于,所述UE将所述已编码反馈信息映射到PUSCH上之前,还包括:若所述码本尺寸为所述第一码本尺寸,所述UE对所述已编码反馈信息采用第一扰码加扰;若所述码本尺寸为所述第二码本尺寸,所述UE对所述已编码反馈信息采用第二扰码加扰。
- 根据权利要求1-6中任一项所述的方法,其特征在于,若所述码本尺寸为所述第一码本尺寸,所述UE根据所述码本尺寸对所述反馈信息进行编码得到已编码反馈信息,包括:所述UE根据所述第一码本尺寸对所述反馈信息进行编码得到第一已编码反馈信息;所述UE将所述已编码反馈信息映射到PUSCH上,包括:所述UE确定所述基站配置的第一比例因子,并根据所述第一比例因子确定第一符号数,其中,所述第一符号数为将所述第一已编码反馈信息映射到所述PUSCH中需要占用的符号数;所述UE根据所述第一符号数将所述第一已编码反馈信息映射到所述PUSCH上;或者,若所述码本尺寸为所述第二码本尺寸,所述UE根据所述码本尺寸对所述反馈信息进行编码得到已编码反馈信息,包括:所述UE根据所述第二码本尺寸对所述反馈信息进行编码得到第二已编码反馈信息;所述UE将所述已编码反馈信息映射到PUSCH上,包括:所述UE确定所述基站配置的第二比例因子,并根据所述第二比例因子确定第二符号数,其中,所述第二符号数为将所述第二已编码反馈信息映射到所述PUSCH中需要占用的符号数;所述UE根据所述第二符号数将所述第二已编码反馈信息映射到所述 PUSCH上。
- 根据权利要求2或4或6或7所述的方法,其特征在于,所述UE接收下行数据之前,还包括:所述UE接收所述基站发送的下行控制信息;所述UE接收下行数据,包括:所述UE在所述基站调度的下行子帧中根据所述下行控制信息接收下行数据;其中,所述第一指示信息为所述下行控制信息中的信息。
- 根据权利要求3或4或6或7或8所述的方法,其特征在于,所述第二指示信息为用于调度所述PUSCH的上行调度信息中的信息。
- 一种通信系统中反馈信息的传输方法,其特征在于,包括:基站向用户设备UE发送下行数据;所述基站确定用于接收所述UE发送的所述下行数据对应的反馈信息的上行子帧,其中,所述上行子帧关联的第一下行子帧集合包括第一子集和第二子集,所述第一子集为所述第二子集的真子集;所述基站确定所述反馈信息的码本尺寸,其中,所述码本尺寸为第一码本尺寸或第二码本尺寸,所述第一码本尺寸对应于所述第一子集包括的下行子帧数,所述第二码本尺寸对应于所述第二子集包括的下行子帧数;所述基站根据确定的所述反馈信息的码本尺寸,在所述上行子帧中接收所述UE发送的物理上行共享信道PUSCH上映射的反馈信息。
- 根据权利要求10所述的方法,其特征在于,所述基站根据确定的所述反馈信息的码本尺寸,在所述上行子帧中接收所述UE发送的物理上行共享信道PUSCH上映射的反馈信息之前,还包括:所述基站通过发送第一指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述基站未向所述UE发送第一指示信息,则所述基站确定的所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求10所述的方法,其特征在于,所述基站根据确定的所述反馈信息的码本尺寸,在所述上行子帧中接收所述UE发送的物理上行共享信道PUSCH上映射的反馈信息之前,还包括:所述基站通过发送第二指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述基站未向所述UE发送第二指示信息,则所述基站确定的所述反馈信息的码本尺寸为预定义的码本尺寸,所述预定义的码本尺寸为所述第一码本尺寸或所述第二码本尺寸。
- 根据权利要求10所述的方法,其特征在于,所述基站根据确定的所述反馈信息的码本尺寸,在所述上行子帧中接收所述UE发送的物理上行共享信道PUSCH上映射的反馈信息之前,还包括:所述基站通过发送第一指示信息和第二指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述基站未向所述UE发送第一指示信息,则所述基站确定的所述反馈信息的码本尺寸为所述第一码本尺寸;或者,若所述基站未向所述UE发送第一指示信息,但所述基站通过发送第二指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述基站未向所述UE发送第一指示信息和第二指示信息,则所述基站确定的所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求10-13中任一项所述的方法,其特征在于,所述基站根据确定的所述反馈信息的码本尺寸,在所述上行子帧中接收所述UE发送的物理上行共享信道PUSCH上映射的反馈信息之前,还包括:所述基站对第一扰码进行解扰处理,其中,所述第一扰码为所述UE在确定所述反馈信息的码本尺寸为所述第一码本尺寸时对已编码反馈信息加扰的;或者,所述基站对第二扰码进行解扰处理,其中,所述第二扰码为所述UE在确定所述反馈信息的码本尺寸为所述第二码本尺寸时对已编码反馈信息加扰的;其中,所述已编码反馈信息为所述UE根据所述码本尺寸对所述反馈信息进行编码得到的信息。
- 根据权利要求11或13或14所述的方法,其特征在于,所述基站向UE发送下行数据之前,还包括:所述基站向所述UE发送下行控制信息;所述基站向UE发送下行数据,包括:所述基站在所述基站调度的下行子帧中向所述UE发送下行数据;其中,所述第一指示信息为所述下行控制信息中的信息。
- 根据权利要求12或13或14或15所述的方法,其特征在于,所述第二指示信息为用于调度所述PUSCH的上行调度信息中的信息。
- 一种用户设备UE,其特征在于,包括:接收模块,用于接收下行数据;处理模块,用于确定用于反馈所述下行数据对应的反馈信息的上行子帧,并确定与所述上行子帧关联的第一下行子帧集合,其中,所述下行数据为所述接收模块接收的,所述第一下行子帧集合包括第一子集和第二子集,所述第一子集为所述第二子集的真子集;所述处理模块,还用于确定所述反馈信息的码本尺寸,其中,所述码本尺寸为第一码本尺寸或第二码本尺寸,所述第一码本尺寸对应于所述第一子集包括的下行子帧数,所述第二码本尺寸对应于所述第二子集包括的下行子帧数;所述处理模块,还用于根据所述码本尺寸对所述反馈信息进行编码得到已编码反馈信息;所述处理模块,还用于将所述已编码反馈信息映射到物理上行共享信道PUSCH上,并控制发送模块通过所述PUSCH在所述上行子帧中发送所述已编码反馈信息;所述发送模块,用于通过所述PUSCH在所述上行子帧中将所述已编码反馈信息发送给所述基站。
- 根据权利要求17所述的UE,其特征在于,所述处理模块具体用于:若接收到所述基站发送的第一指示信息且所述第一指示信息指示所述第一码本尺寸,确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若接收到所述基站发送的第一指示信息且所述第一指示信息指示所述第二码本尺寸,确定所述反馈信息的码本尺寸为所述第二码本尺寸;或者若未接收到第一指示信息,确定所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求17所述的UE,其特征在于,所述处理模块具体用于:若接收到所述基站发送的第二指示信息且所述第二指示信息指示所述第一码本尺寸,确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若接收到所述基站发送的第二指示信息且所述第二指示信息指示所述第 二码本尺寸,确定所述反馈信息的码本尺寸为所述第二码本尺寸;或者若未接收到第二指示信息,确定所述反馈信息的码本尺寸为预定义的码本尺寸,所述预定义的码本尺寸为所述第一码本尺寸或所述第二码本尺寸。
- 根据权利要求17所述的UE,其特征在于,所述处理模块具体用于:若接收到所述基站发送的第一指示信息和第二指示信息且所述第一指示信息和所述第二指示信息指示所述第一码本尺寸,确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若接收到所述基站发送的第一指示信息和第二指示信息且所述第一指示信息和所述第二指示信息指示所述第二码本尺寸,确定所述反馈信息的码本尺寸为所述第二码本尺寸;或者若未接收到第一指示信息,确定所述反馈信息的码本尺寸为所述第一码本尺寸;或者若未接收到第一指示信息,但接收到第二指示信息,确定所述反馈信息的码本尺寸为所述第二指示信息所指示的所述第一码本尺寸或所述第二码本尺寸;或者若未接收到第一指示信息和第二指示信息,确定所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求17所述的UE,其特征在于,所述接收模块具体用于:在所述基站调度的下行子帧中接收所述下行数据,其中,所述基站调度的下行子帧构成第二下行子帧集合,所述第二下行子帧集合为所述第一下行子帧集合的子集;所述处理模块具体用于:若所述第二下行子帧集合为所述第一子集的子集,确定所述反馈信息的码本尺寸为所述第一码本尺寸;若所述第二下行子帧集合只包括所述第二子集中不属于所述第一子集的下行子帧,确定所述反馈信息的码本尺寸为所述第一码本尺寸或所述第二码本尺寸;若所述第二下行子帧集合包括所述第一子集中的下行子帧以及所述第二子集中不属于所述第一子集的下行子帧且所述第二下行子帧集合不包括所述第一子集和所述第二子集之外的下行子帧,确定所述反馈信息的码本尺寸为 所述第二码本尺寸。
- 根据权利要求17-21中任一项所述的UE,其特征在于,所述处理模块还用于:若所述码本尺寸为所述第一码本尺寸,对所述已编码反馈信息采用第一扰码加扰;若所述码本尺寸为所述第二码本尺寸,对所述已编码反馈信息采用第二扰码加扰。
- 根据权利要求17-22中任一项所述的UE,其特征在于,所述处理模块还用于:若所述码本尺寸为所述第一码本尺寸,根据所述第一码本尺寸对所述反馈信息进行编码得到第一已编码反馈信息;确定所述基站配置的第一比例因子,并根据所述第一比例因子确定第一符号数,其中,所述第一符号数为将所述第一已编码反馈信息映射到所述PUSCH中需要占用的符号数;根据所述第一符号数将所述第一已编码反馈信息映射到所述PUSCH上;或者,所述处理模块还用于:若所述码本尺寸为所述第二码本尺寸,根据所述第二码本尺寸对所述反馈信息进行编码得到第二已编码反馈信息;确定所述基站配置的第二比例因子,并根据所述第二比例因子确定第二符号数,其中,所述第二符号数为将所述第二已编码反馈信息映射到所述PUSCH中需要占用的符号数;根据所述第二符号数将所述第二已编码反馈信息映射到所述PUSCH上。
- 根据权利要求18或20或22或23所述的UE,其特征在于,所述接收模块还用于:接收所述基站发送的下行控制信息,并在所述基站调度的下行子帧中根据所述下行控制信息接收下行数据;其中,所述第一指示信息为所述下行控制信息中的信息。
- 根据权利要求19或20或22或23或24所述的UE,其特征在于,所述第二指示信息为用于调度所述PUSCH的上行调度信息中的信息。
- 一种基站,其特征在于,包括:发送模块,用于向用户设备UE发送下行数据;处理模块,用于确定用于接收所述UE发送的所述下行数据对应的反馈信息的上行子帧,其中,所述下行数据为所述发送模块发送的,所述上行子 帧关联的第一下行子帧集合包括第一子集和第二子集,所述第一子集为所述第二子集的真子集;所述处理模块,还用于确定所述反馈信息的码本尺寸,其中,所述码本尺寸为第一码本尺寸或第二码本尺寸,所述第一码本尺寸对应于所述第一子集包括的下行子帧数,所述第二码本尺寸对应于所述第二子集包括的下行子帧数;接收模块,用于根据所述处理模块确定的所述反馈信息的码本尺寸,在所述上行子帧中接收所述UE发送的物理上行共享信道PUSCH上映射的反馈信息。
- 根据权利要求26所述的基站,其特征在于,所述发送模块还用于:通过发送第一指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述发送模块未向所述UE发送第一指示信息,则所述处理模块确定的所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求26所述的基站,其特征在于,所述发送模块还用于:通过发送第二指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述发送模块未向所述UE发送第二指示信息,则所述处理模块确定的所述反馈信息的码本尺寸为预定义的码本尺寸,所述预定义的码本尺寸为所述第一码本尺寸或所述第二码本尺寸。
- 根据权利要求26所述的基站,其特征在于,所述发送模块还用于:通过发送第一指示信息和第二指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述发送模块未向所述UE发送第一指示信息,则所述处理模块确定的所述反馈信息的码本尺寸为所述第一码本尺寸;或者,若所述发送模块未向所述UE发送第一指示信息,但所述发送模块通过发送第二指示信息将确定的所述反馈信息的码本尺寸通知给所述UE;或者,若所述发送模块未向所述UE发送第一指示信息和第二指示信息,则所述处理模块确定的所述反馈信息的码本尺寸为所述第一码本尺寸。
- 根据权利要求26-29中任一项所述的基站,其特征在于,所述处理 模块还用于:对第一扰码进行解扰处理,其中,所述第一扰码为所述UE在确定所述反馈信息的码本尺寸为所述第一码本尺寸时对已编码反馈信息加扰的;或者,对第二扰码进行解扰处理,其中,所述第二扰码为所述UE在确定所述反馈信息的码本尺寸为所述第二码本尺寸时对已编码反馈信息加扰的;其中,所述已编码反馈信息为所述UE根据所述码本尺寸对所述反馈信息进行编码得到的信息。
- 根据权利要求27或29或30所述的基站,其特征在于,所述发送模块还用于:向所述UE发送下行控制信息,并在所述基站调度的下行子帧中向所述UE发送下行数据;其中,所述第一指示信息为所述下行控制信息中的信息。
- 根据权利要求28或29或30或31所述的基站,其特征在于,所述第二指示信息为用于调度所述PUSCH的上行调度信息中的信息。
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Application Number | Priority Date | Filing Date | Title |
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BR112017016300-4A BR112017016300A2 (zh) | 2015-01-30 | 2015-01-30 | Method and apparatus for transmitting information in a communication system Feedback |
CN201910416032.2A CN110213026A (zh) | 2015-01-30 | 2015-01-30 | 通信系统中反馈信息的传输方法及装置 |
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