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 PDF

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Publication number
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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WO
WIPO (PCT)
Prior art keywords
codebook size
feedback information
information
base station
indication information
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PCT/CN2015/071957
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English (en)
French (fr)
Inventor
官磊
马莎
闫志宇
成艳
陈小波
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to BR112017016300-4A priority Critical patent/BR112017016300A2/zh
Priority to CN201910416032.2A priority patent/CN110213026A/zh
Priority to CN201910416015.9A priority patent/CN110247747B/zh
Priority to EP15879429.7A priority patent/EP3242434B1/en
Priority to PCT/CN2015/071957 priority patent/WO2016119221A1/zh
Priority to CN201580002708.3A priority patent/CN106105078B/zh
Priority to KR1020177024021A priority patent/KR102003421B1/ko
Priority to JP2017540586A priority patent/JP6478304B2/ja
Publication of WO2016119221A1 publication Critical patent/WO2016119221A1/zh
Priority to US15/663,378 priority patent/US10225050B2/en
Priority to US16/243,473 priority patent/US10491340B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1861Physical mapping arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1864ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0072Error control for data other than payload data, e.g. control data
    • H04L1/0073Special arrangements for feedback channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055Physical resource allocation for ACK/NACK
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-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

本发明实施例提供一种通信系统中反馈信息的传输方法及装置,该方法中,UE可根据所述基站实际调度的下行子帧的情况来确定所述反馈信息的码本尺寸,从而不仅实现了在PUSCH中可以承载更多比特数的ACK/NACK信息,且在使用预定资源量时提高了ACK/NACK和PUSCH中上行数据的性能,或者在保证相同ACK/NACK和PUSCH中上行数据性能的前提下,节省了资源开销。

Description

通信系统中反馈信息的传输方法及装置 技术领域
本发明实施例涉及通信技术,尤其涉及一种通信系统中反馈信息的传输方法及装置。
背景技术
目前长期演进(Long Term Evolution,简称LTE)系统通常采用混合自动重传请求(Hybrid Automatic Repeat Request,简称HARQ)机制,具体地,当用户设备(User Equipment,简称UE)通过物理下行共享信道(Physical Downlink Shared Channel,简称PDSCH)接收到下行数据后,若能正确接收所述下行数据,则所述UE通过物理上行控制信道(Physical Uplink Control Channel,简称PUCCH)向基站发送确认(ACKnowledge,简称ACK)信息;若不能正确接收所述下行数据,则所述UE通过PUCCH向所述基站发送非确认(NACKnowledge,简称NACK)信息。进一步地,当所述UE发送ACK/NACK信息的上行子帧中还需要发送上行数据时,为了保持LTE系统的上行单载波特性,以提高上行发射功率的效率,将ACK/NACK信息及所述上行数据映射到物理上行共享信道(Physical Uplink Shared Channel,简称PUSCH)中,同时发送给所述基站。
同时LTE系统还支持载波聚合(Carrier Aggregation,简称CA)技术,即基站将至少两个载波配置给同一UE以提升所述UE的数据传输速率,其中,所述至少两个载波包括:一个主载波以及至少一个辅载波。CA模式下的PUCCH发送模式包括:信道选择模式和PUCCH格式3;其中,信道选择模式最多支持2个载波的CA;PUCCH格式3模式可以支持5个载波的CA或者最多可以支持20个左右ACK/NACK比特的传输,因此,当所述UE发送ACK/NACK信息的上行子帧中还需要发送上行数据时,PUSCH最多可以承载20个左右ACK/NACK比特。
随着LTE技术的继续演进,PUSCH可能需要承载更多比特数的 ACK/NACK信息,因此,如何在PUSCH中承载更多比特数的ACK/NACK信息是本发明所要解决的技术问题。
发明内容
本发明实施例提供一种通信系统中反馈信息的传输方法及装置,不仅实现了在PUSCH中可以承载更多比特数的ACK/NACK信息,且节省了资源开销。
第一方面,本发明实施例提供一种通信系统中反馈信息的传输方法,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。
结合第一方面,在第一方面的第一种可能的实现方式中,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。
结合第一方面,在第一方面的第二种可能的实现方式中,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。
结合第一方面,在第一方面的第三种可能的实现方式中,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。
结合第一方面或第一方面的任一种可能的实现方式,在第一方面的第四种可能的实现方式中,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。
结合第一方面、第一方面的第一种至第四种任一种可能的实现方式,在第一方面的第五种可能的实现方式中,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。
结合第一方面或第一方面的任一种可能的实现方式,在第一方面的第六种可能的实现方式中,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。
结合第一方面的任一种可能的实现方式,在第一方面的第七种可能的实现方式中,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。
结合第一方面的任一种可能的实现方式,在第一方面的第八种可能的实现方式中,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。
第二方面,本发明实施例提供一种通信系统中反馈信息的传输方法,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。
结合第二方面,在第二方面的第一种可能的实现方式中,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。
结合第二方面,在第二方面的第二种可能的实现方式中,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。
结合第二方面,在第二方面的第三种可能的实现方式中,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。
结合第二方面或第二方面的任一种可能的实现方式,在第二方面的第四种可能的实现方式中,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。
结合第二方面或第二方面的任一种可能的实现方式,在第二方面的第五种可能的实施方式中,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。
结合第二方面或第二方面的任一种可能的实现方式,在第二方面的第六种可能的实施方式中,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。
第三方面,本发明实施例提供一种用户设备UE,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。
结合第三方面,在第三方面的第一种可能的实现方式中,所述处理确定模块具体用于:
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。
结合第三方面,在第三方面的第二种可能的实现方式中,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。
结合第三方面,在第三方面的第三种可能的实现方式中,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。
结合第三方面,在第三方面的第四种可能的实现方式中,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。
结合第三方面的第一种至第四种任一种可能的实现方式,在第三方面的第五种可能的实现方式中,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。
结合第三方面或第三方面的任一种可能的实现方式,在第三方面的第六种可能的实现方式中,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。
结合第三方面或第三方面的任一种可能的实现方式,在第三方面的第七种可能的实现方式中,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。
结合第三方面或第三方面的任一种可能的实现方式,在第三方面的第八种可能的实现方式中,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。
第四方面,本发明实施例提供一种基站,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;其中,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。
结合第四方面,在第四方面的第一种可能的实现方式中,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。
结合第四方面,在第四方面的第二种可能的实现方式中,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。
结合第四方面,在第四方面的第三种可能的实现方式中,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。
结合第四方面或第四方面的任一种可能的实现方式,在第四方面的第四种可能的实现方式中,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。
结第四方面或第四方面的任一种可能的实现方式,在第四方面的第五种可能的实施方式中,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。
结合第四方面或第四方面的任一种可能的实现方式,在第四方面的第六种可能的实施方式中,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。
本发明中,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;进一步地,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第二子集包括的下行子帧数;进一步地,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;进一步地,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;即所述UE可根据所述基站实际调度的下行子帧的情况来确定所述反馈信息的码本尺寸,从而不仅实现了在PUSCH中可以承载更多比特数的ACK/NACK信息,且在使用预定资源量时提高了ACK/NACK和PUSCH中上行数据的性能,或者在保证相同ACK/NACK和PUSCH中上行数据性能的前提下,节省了资源开销。
附图说明
图1为本发明通信系统中反馈信息的传输方法实施例一的流程示意图;
图2为本发明通信系统中反馈信息的传输方法实施例二的流程示意图;
图3为本发明UE实施例一的结构示意图;
图4为本发明UE实施例二的结构示意图;
图5为本发明基站实施例一的结构示意图;
图6为本发明基站实施例二的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例中,当所述UE发送ACK/NACK信息的上行子帧中还需要发送上行数据时,为了保持LTE系统的上行单载波特性,将ACK/NACK信息及所述上行数据映射到PUSCH中同时发送给所述基站;可选地,所述PUSCH可由下行控制信道来调度,如TDD系统中上下行子帧配置2的上行子帧2上的PUSCH由前一个无线帧中的下行子帧8上发送的下行控制信道来调度的;或者, 所述PUSCH还可为半静态调度的数据信道,即不需要使用下行控制信道进行调度,所述UE预先获知需要在所述上行子帧2上发送半静态调度的上行数据信道。
LTE系统支持频分双工(Frequency Duplexing Division,简称FDD)CA、时分双工(Time Duplexing Division,简称TDD)CA以及FDD+TDD CA,其中,TDD CA包括:相同上下行配置的TDD CA和不同上下行配置的TDD CA。CA模式下的PUCCH发送模式包括:信道选择模式和PUCCH格式3;其中,信道选择模式下采用PUCCH格式1a/1b进行ACK/NACK反馈,但最多支持2个载波的CA;PUCCH格式3模式采用离散傅里叶变换扩展正交频分复用(Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing,简称DFT-S-OFDM)的发送结构,最多可以支持20个左右ACK/NACK比特的传输,可以支持5个载波的TDD CA;例如,以TDD上下行配置为2,一个载波的上行子帧2可以支持4个ACK/NACK比特的反馈,5个载波的TDD上下行配置2的CA可以支持20个ACK/NACK比特,即若所述UE发送ACK/NACK信息的上行子帧中还需要发送上行数据时,当前PUSCH最多可以承载20个左右ACK/NACK比特。基于现有CA机制,假设基站为UE配置了与上行子帧n关联的N个下行子帧,但某时刻可能实际只调度了所述N中的M个下行子帧(M<N,M与N为正整数),现有计算反馈信息的码本尺寸方法总是基于N来确定反馈信息的码本尺寸。
随着LTE技术的继续演进,在某些场景下PUSCH可能需要承载更多比特数的ACK/NACK信息,比如大于20比特;可选地,基于当前CA架构,引入更多载波的CA时,如10载波的CA,若10个TDD上下行配置2的载波进行CA,需要反馈40比特的ACK/NACK;可选地,保持当前最大支持5载波CA,其中多个载波都配置成TDD上下行配置5时,例如主载波是上下行配置2及4个辅载波都是上下行配置5,则需要反馈4+9*4=40比特的ACK/NACK;可选地,支持两个以上只有下行子帧的TDD载波,或者上述不同上下行配置的载波组合时,PUSCH可能需要承载大于20比特的ACK/NACK信息。因此,随着CA的载波数量增加,由于M可能远小于N,总是基于N来确定反馈信息的码本尺寸的方式会产生较大的开销。其中,码本尺寸就是ACK/NACK的原始比特数或编码前的比特数,以基于配置的聚合载波集合中的下行子帧个数 N来确定码本尺寸是指:如果每个下行子帧被调度一个码字,那么每个下行子帧对应一个比特的ACK/NACK反馈,则码本尺寸为N;如果每个下行子帧被调度两个码字,那么每个下行子帧对应两个比特的ACK/NACK反馈,则码本尺寸为2*N。
图1为本发明通信系统中反馈信息的传输方法实施例一的流程示意图,如图1所示,本实施例的方法可以包括:
S101、用户设备UE接收下行数据。
LTE系统支持FDD和TDD两种双工方式;其中,FDD系统中下行和上行在不同的载波上传输,TDD系统中上行和下行在同一载波的不同时间来传输,具体地,一个载波包括:下行子帧、上行子帧和特殊子帧,其中,特殊子帧包括:下行导频时隙(Downlink Pilot Time Slot,简称DwPTS)、保护时间(Guard Period,简称GP)和上行导频时隙(Uplink Pilot Time Slot,简称UpPTS)三个部分,其中GP主要用于下行到上行的器件转换时间和传播时延的补偿,DwPTS中可以传输下行数据,但UpPTS中不可以传输PUSCH。表1为LTE系统中不同TDD的上下行配置表,LTE当前支持7种不同的TDD上下行配置,如表1所示,其中,D表示下行子帧,S表示特殊子帧,U表示上行子帧。
表1LTE系统中不同TDD的上下行配置表
Figure PCTCN2015071957-appb-000001
本发明实施例中,所述UE可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,即所述第二下行子帧集合中的下行子帧为所述基站实际调度的子帧。可选地,在步骤S101之前还包括:所述UE接收所述基站发送的下行控制信息,如通过下行控制信道接收基站发送的下行控制信息;相应地,步骤S101包括: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,如通过物理 下行共享信道(Physical Downlink Shared Channel,简称PDSCH)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;可选地,所述下行控制信道可以为物理下行控制信道(Physical Downlink Control Channel,简称PDCCH)或增强的物理下行控制信道(Enhanced PDCCH,简称EPDCCH);可选地,所述下行控制信息可以包括:PDSCH或PUSCH的调度信息,所述调度信息可以包括:信道资源分配信息及调制编码方式等控制信息。
S102、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。
通常情况下,PDSCH调度的下行子帧与用于反馈在所述下行子帧接收的下行数据所对应的反馈信息的上行子帧之间有预配置的时序或定时关系。可选地,1)对于FDD,UE通过PDSCH在下行子帧n-4接收到下行数据之后,会在上行子帧n反馈ACK/NACK信息;2)对于TDD,表2为TDD系统中反馈ACK/NACK信息的时序关系表,通过PDSCH接收下行数据的下行子帧与用于反馈所述下行数据所对应的反馈信息的上行子帧之间的时序关系如表2所示,其中,所述子帧标号n对应的子帧为用于反馈ACK/NACK信息的上行子帧n,每个所述子帧标号n针对不同上下行配置对应的标识数字表示在所述上行子帧n中需要反馈n-k(k属于K)的下行子帧集合中的下行数据所对应的ACK/NACK信息,例如上下行配置1的上行子帧n=2对应的K={7、6}表示上行子帧2(n=2)用来反馈n-7和n-6这两个下行子帧上的下行数据所对应的ACK/NACK信息,具体n-7为下行子帧5,n-6为下行子帧6。
表2.TDD系统中PDSCH与其对应的ACK/NACK的时序关系
Figure PCTCN2015071957-appb-000002
本发明实施例中,所述UE根据预先设置的下行子帧与用于反馈在所述下行子帧接收的下行数据所对应的反馈信息的上行子帧之间的时序关系确定用于反馈所述下行数据对应的反馈信息的上行子帧,以及与所述上行子 帧关联的第一下行子帧集合,可选地,所述反馈信息为用于确认是否正确接收所述下行数据的信息,如确认ACK信息或非确认NACK信息,所述第一下行子帧集合包括基站为所述上行子帧配置的所有下行子帧。例如,假设UE被配置了载波1至5,每个载波都是TDD配置2,那么主载波的上行子帧2所关联的第一下行子帧集合为该载波1至5的子帧4、5、6和8,总共20个子帧。由于基站在某时刻通常不会调度所述第一下行子帧集合中的所有下行子帧,即所述第二下行子帧集合为所述第一下行子帧集合的子集,随着CA载波数量的增加,由于所述第二下行子帧集合可能远远小于所述第一下行子帧集合,采用现有的基于所述第一下行子帧集合来确定反馈信息的码本尺寸的方式会产生较大的开销,本发明实施例中提出反馈信息码本的动态回退机制,提出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,以便进一步地,根据所述第一子集或所述第二子集中下行子帧数确定所述反馈信息的码本尺寸,节省了资源开销;可选地,所述第二子集可以等于所述所述第一下行子帧集合。需要说明的是,本发明实施例中并不限定于所述第一下行子帧集合仅包括所述第一子集和所述第二子集两个子集,还可以包括大于两个子集,如第三子集或第四子集。
可选地,所述UE可预先确定所述第一子集和所述第二子集,可根据预配置规则确定所述第一子集和所述第二子集。
本发明实施例以TDD CA为例进行说明,若UE被基站配置了15个载波,并且所述15个载波的TDD上下行配置为相同的上下行子帧配置2,根据表2中的时序关系确定主载波的上行子帧2最多需要反馈所述15个载波上的下行子帧4、5、6和8中数据信道所对应的ACK/NACK信息,所有的所述下行子帧(即载波1-15的下行子帧4、5、6和8)构成了第一下行子帧集合(可选地,现有技术中基于所述第一下行子帧集合中的下行子帧个数确定所述反馈信息的码本尺寸为4*15=60个比特);可选地,对于15个载波的数据信道可分别由独立的控制信道调度,也可由一个控制信道调度多个子帧和/或多个载波的数据信道,本发明实施例中对15个载波的数据信道的调度方式并不作限定,本实施例中以独立调度为例进行描述。此外,本发明实施例还可以扩展到为UE配置多个不同的上下行子帧配置的TDD CA、TDD与FDD CA等。
本实施例中,所述第一下行子帧集合包括所述第一子集和所述第二子集, 其中,所述第一子集为所述第二子集的真子集,即所述第二子集包括所述第一子集且所述第二子集中的下行子帧个数多于所述第一子集中的下行子帧个数,本发明实施例中假设不同载波上具有相同子帧号的下行子帧为不同的下行子帧;由于特殊子帧上可以传输下行数据但不可以传输上行数据,TDD特殊子帧也可以归为下行子帧。比如第一子集包括载波1至5的下行子帧4、5、6和8,第二子集包括载波1至10的下行子帧4、5、6和8,可见所述第二子集完全包含所述第一子集;可选地,本实施例还可以包括第三子集,设所述第三子集包括载波1-15的下行子帧4、5、6和8,即所述第三子集为基站为UE配置的在某上行子帧上反馈的ACK/NACK信息所关联的所有预配置的下行子帧,即所述第三子集等于所述第一下行子帧集合;可见所述第一子集与所述第二子集的关系、所述第二子集与所述第三子集的关系,以及所述第一子集与所述第三子集的关系都是结构类似的;可选的,所述第一子集和所述第二子集还可以部分重叠;当然,本发明实施例还可以采用其他方式,此处不再赘述。
本发明实施例中,具体地根据预配置规则确定所述第一子集和所述第二子集的方式如下:按照载波序号和/或子帧序号以及结合ACK/NACK比特数阈值(如20比特、21比特或22比特)确定所述第一子集和所述第二子集;1)如UE确定所述第一子集包括载波1至5的下行子帧4、5、6和8,以及所述第二子集包括载波1至10的下行子帧4、5、6和8;其中,所述第一子集的选取方法是先按照时域子帧标号的顺序将载波1的下行子帧选取完,再基于频域载波标号继续选取载波2的下行子帧,一直取到比特数阈值所限定的下行子帧个数;所述第二子集的选取方式类似于所述第一子集;2)如假设上述比特数阈值为10,以5个载波且每个载波的上下行子帧配置2为例,其中,第一种集合划分方式为:第一子集包括载波1至2的下行子帧4、5、6和8以及载波3的下行子帧4和5,第二子集除了包括所述第一子集的全部下行子帧之外,还包括载波3的下行子帧6和8以及载波3至4的下行子帧4、5、6和8,此时一个载波上的不同子帧被划分到不同的下行子帧集合中,可见该例中还是按照先时域子帧号再频域载波号的方式来选取第一子集和第二子集;第二种集合划分方式为:第一子集包括载波1至2的下行子帧4、5、6和8,第二子集除了包括所述第一子集的全部下行子帧之外,还包括载波3至5的下行子帧4、5、6和8,此例划分规则是根据载波、子帧序号以及比特数阈值确定不超过所述比特数阈值的最大载波 数内的下行子帧为某个集合,由于同一载波上的不同子帧不可以划分到多个不完全相交集合中,否则会导致某集合中的下行子帧数少于上述比特数阈值。可选地,还可以按照先频域载波号再时域子帧号的顺序,并结合比特数阈值来选取第一子集和第二子集。
可选地,所述UE还可根据所述基站发送的指示信令确定所述第一子集和所述第二子集,如基站将划分规则通过所述指示信令通知给所述UE;可选地,所述UE直接接收所述基站确定好的所述第一子集和所述第二子集,如所述基站直接通知所述UE划分好的所述第一子集和所述第二子集。当然,所述UE还可通过其它方式确定所述第一子集和所述第二子集,本发明实施例中对此并不作限定。
S103、所述UE确定所述反馈信息的码本尺寸,其中,所述码本尺寸为为第一码本尺寸或第二码本尺寸。
本发明实施例中,所述UE可根据所述基站在确定所述反馈信息的码本尺寸后向所述UE发送的码本尺寸指示信息或者所述第二下行子帧集合、所述第一子集和所述第二子集之间的关系,确定所述反馈信息的码本尺寸为第一码本尺寸或第二码本尺寸,其中,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(即所述第一码本尺寸为根据所述第一子集包括的下行子帧数确定的),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(即所述第二码本尺寸为根据所述第二子集包括的下行子帧数确定的);即所述UE可根据所述基站实际调度的下行子帧的情况来确定所述反馈信息的码本尺寸,从而确定的所述反馈信息的码本尺寸小于等于现有技术中所述UE根据所述第一下行子帧集合中下行子帧的个数确定的码本尺寸,因此,不仅实现了在PUSCH中可以承载更多比特数的ACK/NACK信息,且在使用预定资源量时提高了ACK/NACK和PUSCH中上行数据的性能,或者在保证相同ACK/NACK和PUSCH中上行数据性能的前提下,节省了资源开销。
可选地,所述UE根据所述基站发送的码本尺寸指示信息确定所述反馈信息的码本尺寸的方式中,所述码本尺寸指示信息可以为第一指示信息、第二指示信息或者第一指示信息与第二指示信息的结合信息,具体过程如下:
可选地,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。
本发明实施例中,第一种可能的实现方式为:基站在确定所述反馈信息的码本尺寸为所述第一码本尺寸后,将包含所述第一码本尺寸的第一指示信息(即码本尺寸指示信息)通知给所述UE,若所述UE接收到所述基站发送的所述第一指示信息(所述第一指示信息指示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),所述UE直接确定所述反馈信息的码本尺寸为所述第一码本尺寸。第二种可能的实现方式为:基站在确定所述反馈信息的码本尺寸为所述第二码本尺寸后,将包含所述第二码本尺寸的第一指示信息(即码本尺寸指示信息)通知给所述UE,若所述UE接收到所述基站发送的所述第一指示信息(所述第一指示信息指示所述基站确定的所述反馈信息的码本尺寸为所述第二码本尺寸),所述UE直接确定所述反馈信息的码本尺寸为所述第二码本尺寸。第三种可能的实现方式为: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。
可选地,所述第一指示信息为所述下行控制信息中的信息,如所述第一指示信息为调度所述第二下行子帧集合中的下行子帧的下行控制信息中的信息(或者所述第一指示信息可承载于所述基站调度所述第二下行子帧集合中下行子帧的控制信道中);可选地,所述第一指示信息可以通过用于调度辅载波上PDSCH的辅PDCCH中的两比特字段指示,或者通过用于调度主载波上PDSCH的主PDCCH中的两比特字段指示且所述主PDCCH中的下行分配索引(Downlink Assignment Index,简称DAI)字段取值大于1;可选地,预先为所述UE配置所述用于指示所述第一指示信息的相应比特字段的各个状态的解析信息,以便所述UE在接收到所述基站发送的所述第一指示信息时,根据所述相应比特字段及预配置的所述解 析信息确定所述基站所指示的所述反馈信息的码本尺寸,如预先为所述UE配置所述辅PDCCH中的两比特字段和DAI字段取值大于1的所述主PDCCH中的两比特字段的4个状态的解析信息,如所述UE通过高层无线资源控制(Radio Resource Control,简称RRC)信令获取所述两比特的4种状态的解析信息,如{00,01,10,11}分别解析为{第一码本尺寸,第一码本尺寸,第二码本尺寸,第二码本尺寸};基于所述预配置信息,若所述UE接收到所述辅PDCCH,其中,所述2比特状态为01,则所述UE根据所述第一指示信息确定所述反馈信息的码本尺寸为第一码本尺寸。可选地,若所述第一下行子帧集合还包括第三子集、第四子集和第五子集,对应地还包括第三码本尺寸、第四码本尺寸和第五码本尺寸,则两比特不能表示全5个码本尺寸,可选地,所述第一指示信息可通过用于调度辅载波上PDSCH的辅PDCCH中的三比特字段指示,或者通过用于调度主载波上PDSCH的主PDCCH中的三比特字段指示且所述主PDCCH中的DAI字段取值大于1。当然,本发明实施例中还可通过其它方式表示所述第一指示信息,此处不再赘述。
本发明实施例中,所述UE在某些情况下可能未接收到所述第一指示信息,如,对于FDD系统中,意味着所述UE只接收到基站发送的用于调度主载波上PDSCH的主PDCCH(即所述主PDCCH中不包括所述第一指示信息),或者对于TDD系统中,意味着所述UE只接收到基站发送的用于调度主载波上PDSCH的主PDCCH且所述主PDCCH中的DAI=1(即所述主PDCCH中不包括所述第一指示信息),或者所述UE漏检控制信道,以至于所述UE只接收到上述没有包含所述第一指示信息的控制信道,则所述UE无法根据所述第一指示信息来确定所述反馈信息的码本尺寸,若确定所述反馈信息的码本尺寸为所述第二码本尺寸,则意味着所述UE确实漏检了调度所述第一子集之外的下行子帧的所有控制信道才会与基站的理解一致,而这种概率较低,另外,选取第一码本尺寸的风险是UE漏检了调度所述第一子集之外的下行子帧的所有控制信道才会与基站对码本尺寸的理解发生不一致,而这种概率显然是很低的,因此,由于所述UE漏检较多控制信道的概率比漏检较少控制信道的概率要低很多,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;即所述UE实际收到的PDCCH中,有些包括所述第一指示 信息,有些不包括所述第一指示信息;一旦所述UE只收到不包括所述第一指示信息的PDCCH时,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。对应地,为了保证所述基站与所述UE对所述反馈信息的码本尺寸理解一致,若所述基站只向所述UE发送了用于调度主载波上PDSCH的主PDCCH,或者用于调度主载波上PDSCH的主PDCCH(所述主PDCCH中的DAI=1)时,可选地,所述基站也会确定所述反馈信息的码本尺寸为所述第一码本尺寸,且会按照所述第一码本尺寸接收所述UE反馈的编码后的ACK/NACK信息。
可选地,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。
本发明实施例中,第一种可能的实现方式为:基站在确定所述反馈信息的码本尺寸为所述第一码本尺寸后,将包含所述第一码本尺寸的第二指示信息(即码本尺寸指示信息)通知给所述UE,若所述UE接收到所述基站发送的所述第二指示信息(所述第二指示信息指示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),所述UE直接确定所述反馈信息的码本尺寸为所述第一码本尺寸。第二种可能的实现方式为:基站在确定所述反馈信息的码本尺寸为所述第二码本尺寸后,将包含所述第二码本尺寸的第二指示信息(即码本尺寸指示信息)通知给所述UE,若所述UE接收到所述基站发送的所述第二指示信息(所述第二指示信息指示所述基站确定的所述反馈信息的码本尺寸为所述第二码本尺寸),所述UE直接确定所述反馈信息的码本尺寸为所述第二码本尺寸。第三种可能的实现方式为: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。
可选地,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,如所述第二指示信息为调度当前用于承载ACK/NACK和上行数据的PUSCH的控制信道(即上行调度授权)中的指示信息(或者所述第二指示信息承载于所述基站调度所述PUSCH的控制信道中);可选地,所述第二指示信息可以通过上行调度授权中的下行分配指示(Uplink_Downlink assignment indicator),简称UL_DAI)、上行调度授权中的上行调度索引(Uplink index,简称UL_index)的指示域或新增比特来指示,如可通过新增1比特或UL_DAI当前的2比特中的1比特来指示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,可选地,还可通过至少两比特指示更多级的码本尺寸;可选地,预先为所述UE配置所述用于指示所述第二指示信息的相应比特字段的各个状态的解析信息,以便所述UE在接收到所述基站发送的所述第二指示信息时,根据所述相应比特字段及预配置的所述解析信息确定所述基站所指示的所述反馈信息的码本尺寸,如若通过1比特来表示所述第二指示信息时,所述1比特的2种状态分别为{0,1},对应地解析信息分别为{第一码本尺寸,第二码本尺寸},基于所述预配置信息,若所述UE接收到所述上行调度信息(即第二指示信息),其中,所述1比特状态为0(即所述第二指示信息指示所述第一码本尺寸),则所述UE根据所述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。当然,本发明实施例中还可通过其它方式表示所述第二指示信息,此处不再赘述。
本发明实施例中,所述UE在某些情况下可能未接收到所述第二指示信息,如半静态PUSCH调度的场景下没有上行调度授权的发送时,则所述UE可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;对应地,为了保证所述基站与所述UE对所述反馈信息的码本尺寸理解一致,所述基站也会确定所述反馈信息的码本尺寸为所述预定义的码本尺寸(可选地,预先配置好在该种场景下,确定所述反馈信息的码本尺寸应为哪个码本尺寸)。
可选地,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。
本发明实施例中,基站可通过所述第一指示信息和第二指示信息联合指示所述反馈信息的码本尺寸;可选地,所述第一指示信息为所述下行控制信息中的信息,如所述第一指示信息为调度所述第二下行子帧集合中的下行子帧的下行控制信息中的信息,所述第一指示信息的表示方式具体详见上述所述UE根据所述第一指示信息确定所述反馈信息的码本尺寸中的关于所述第一指示信息的指示方式部分,此处不再赘述。可选地,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,如所述第二指示信息为调度当前用于承载ACK/NACK和上行数据的PUSCH的控制信道(即上行调度授权)中的指示信息;可选地,所述第二指示信息可以通过UL_DAI、UL_index的指示域或新增比特来指示,如可通过新增1比特或UL_DAI当前的2比特中的1比特来指示所述反馈信息的码本尺寸,或者还可通过至少两比特指示更多级的码本尺寸。可选地,预先为所述UE配置所述用于指示所述第一指示信息及所述第二指示信息的相应比特字段的各个状态的解析信息,以便所述UE在接收到所述基站发送的所述第一指示信息和/或所述第二指示信息时,根据所述相应比特字段及预配置的所述解析信息确定所述基站所指示的所述反馈信息的码本尺寸。
本发明实施例中,假设通过2比特来表示所述第一指示信息,所述第一指示信息的4种比特状态为{00,01,10,11},对应的解析信息分别为 {第一码本尺寸,第一码本尺寸,第二码本尺寸,第二码本尺寸},假设通过1比特来表示所述第二指示信息,所述1比特的2种状态分别为{0,1},对应地解析信息分别为{第一码本尺寸,第二码本尺寸};1)当所述UE接收到所述第一指示信息和所述第二指示信息,且所述2比特状态为{00}及所述1比特状态为{0},则基于所述预配置信息所述UE直接确定所述反馈信息的码本尺寸为所述第一码本尺寸;2)当所述UE接收到所述第一指示信息和所述第二指示信息,且所述2比特状态为{10}及所述1比特状态为{1},则所述UE直接确定所述反馈信息的码本尺寸为所述第二码本尺寸;3)当所述UE未接收到第一指示信,所述UE可直接确定所述反馈信息的码本尺寸为所述第一码本尺寸;4)当所述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,如所述1比特状态为{1},则所述UE直接确定所述反馈信息的码本尺寸为所述第二码本尺寸;5)当所述UE未接收到第一指示信息和第二指示信息,所述UE直接确定所述反馈信息的码本尺寸为所述第一码本尺寸,对应地,若所述基站未向所述UE发送所述第一指示信息和所述第二指示信息时,所述基站也会按照所述第一码本尺寸为接收所述UE反馈的编码后的ACK/NACK信息。
可选地,所述1比特的两个比特状态还可基于所述第一指示信息指示的第一码本尺寸或第二码本尺寸进一步来细分(可选地,所述第二指示信息也可以指示第三码本尺寸),如果第一指示信息的比特状态为10,即指示了所述第二码本尺寸(即所述第一指示信息指示所述第二码本尺寸)(具体对应所述第二子集),1)此时如果所述第二指示信息的比特状态为0,即按照所述第一指示信息所指示的所述第二码本尺寸,表示按照所述第二子集对应的所述第二码本尺寸来编码ACK/NACK,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,2)此时如果所述第二指示信息的比特状态为1,则可以表示确定所述反馈信息的码本尺寸为小于所述第二码本尺寸但大于所述第一码本尺寸的第三码本尺寸,其中,所述第三码本尺寸为根据第三子集包括的下行子帧数确定的,所述第三子集可以为所述第二子集的一个子集且所述第三子集包含的下行子帧数大于所述第一子集包含的下行子帧数,所述第三子集包括的下行子帧不同于所述第一子 集,可选地,所述第三子集可以包含所述第一子集,也可以与所述第一子集部分重叠,甚至不重叠。
可选地,所述第二指示信息还可以指示第四码本尺寸,具体如下:所述UE在某些情况下可能未接收到所述第一指示信息,此时可按照两种方案确定所述反馈信息的码本尺寸;1)第一种方案为:所述UE直接确定所述反馈信息的码本尺寸为所述第一码本尺寸,以便按照所述第一子集对应的所述第一码本尺寸来编码ACK/NACK,对应地,所述基站也按照所述第一码本尺寸来接收编码后的ACK/NACK信息;2)第二种方案为:若所述UE接收到第二指示信息,所述UE根据所述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或所述第二码本尺寸,可选地,所述第二指示信息可以通过UL_DAI、UL_index的指示域或新增比特来指示,如可通过新增1比特或UL_DAI当前的2比特中的1比特来指示所述反馈信息的码本尺寸,可选地,还可通过至少两比特指示更多级的码本尺寸;可选地,预先为所述UE配置所述用于指示所述第二指示信息的相应比特字段的各个状态的解析信息,以便所述UE在未接收到所述第一指示信息但接收到所述基站发送的所述第二指示信息时,根据所述相应比特字段及预配置的所述解析信息确定所述反馈信息的码本尺寸,如若通过1比特来表示所述第二指示信息时,所述1比特的2种状态分别为{0,1},对应地解析信息分别为{第一码本尺寸,第四码本尺寸},基于所述预配置信息,若所述UE接收到所述上行调度信息(即第二指示信息),其中,若所述1比特状态为0,则所述UE根据所述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;若所述1比特状态为1,则所述UE根据所述第二指示信息确定所述反馈信息的码本尺寸为所述第四码本尺寸,其中,所述第四码本尺寸小于所述第一码本尺寸,所述第四码本尺寸为根据第四子集包括的下行子帧数确定的,所述第四子集可以为所述第一子集的子集。
可选地,所述UE根据所述第二下行子帧集合、所述第一子集和所述第二子集之间的关系确定所述反馈信息的码本尺寸的过程如下:
可选地,步骤S101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。
S104、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。
本发明实施例中,所述UE根据步骤S103中确定的所述码本尺寸,如所述第一码本尺寸或者所述第二码本尺寸,对所述反馈信息进行RM编码或卷积编码等,得到已编码反馈信息;可选地,本发明实施例中还可采用其它编码方式,此处不再赘述。可选地,可根据载波号和子帧号来对码本中ACK/NACK的排序顺序进行,对于所述第一子集或所述第二子集中没有被调度的下行子帧对应的ACK/NACK位置处进行填零处理。
S105、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。
本发明实施例中,所述UE生成用于在所述上行子帧中发送上行数据的PUSCH,然后将所述已编码反馈信息进行速率匹配和符号调制,然后将所述已编码反馈信息映射到物理上行共享信道PUSCH上,通过所述PUSCH在所述上行子帧中将需要发送的所述上行数据及所述已编码反馈信息同时发送给所述基站,从而保持LTE系统的上行单载波特性,以提高上行发射功率的效率。
本发明实施例中,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;进一步地,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;进一步地,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;进一步地,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;即所述UE可根据所述基站实际调度的下行子帧的情况来确定所述反馈信息的码本尺寸,从而不仅实现了在PUSCH中可以承载更多比特数的ACK/NACK信息,且在使用预定资源量时提高了ACK/NACK和PUSCH中上行数据的性能,或者在保证相同ACK/NACK和PUSCH中上行数据性能的前提下,节省了资源开销。
进一步地,为了解决由于所述UE可能漏检控制信道而引起的所述UE与所述基站对于反馈信息的码本尺寸理解不一致的问题;如假设所述基站调度了所述第一子集中的下行子帧,且还调度了所述第二子集中除所述第一子集之外的下行子帧,则所述基站期待所述UE使用所述第二码本尺寸来编码ACK/NACK,但如果所述UE漏检了控制信道导致所述UE只收到用于调度所述第一子集中下行子帧的控制信道,则所述UE会使用所述第一码本尺寸来编码ACK/NACK,造成与所述基站的理解不一致,可能导致最终ACK/NACK解码错误;本发明实施例中,提出对所述已编码反馈信息使用不同的扰码来加扰,以使所述基站通过采用不同的扰码进行解扰处理可获知所述UE对反馈信息编码时使用的所述反馈信息的码本尺寸,也就不会出现所述基站与所述UE对于所述反馈信息的码本尺寸理解不一致的问题。
可选地,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。
本发明实施例中,若确定的所述反馈信息的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;若确定的所述反馈信息的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,以使所述基站通过不同的扰码进行解扰处理便可获知所述UE确定的所述反馈信息的码本尺寸,从而使所述UE对于码本尺寸理解与所述基站保持一致。
可选地,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PUSCH上。
本发明实施例中,由于所述第一码本尺寸对应所述第一子集以及所述第二码本尺寸对应所述第二子集,因此所述第一码本尺寸和所述第二码本尺寸表征的ACK/NACK原始比特数不相同,其中,所述第二码本尺寸大于所述第一码本尺寸,因此,基于所述第一码本尺寸或所述第二码本尺寸在PUSCH上映射ACK/NACK调制符号数时,对应地所述第一比例因子或所述第二比例因子是独立配置的,以使基于所述第一码本尺寸或所述第二码本尺寸编码后的ACK/NACK性能是一致的。1)若所述码本尺寸为所述第一码本尺寸, 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;进一步地,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将所述第一已编码反馈信息映射到所述PUSCH中需要占用的第一符号数;进一步地,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。2)若所述码本尺寸为所述第二码本尺寸,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;进一步地,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将所述第二已编码反馈信息映射到所述PUSCH中需要占用的第二符号数;进一步地,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。
其中,所述第一比例因子和所述第二比例因子表征了PUSCH中的上行数据与ACK/NACK的编码速率的比值,具体可以由下面的公式得出:
Figure PCTCN2015071957-appb-000003
其中,MPUSCH-initial表示当前上行数据在初始调度时被调度的PUSCH所占的频域子载波数,MPUSCH表示当前上行数据在当前子帧被调度的PUSCH所占的频域子载波数;NPUSCH-initial表示当前上行数据在初始调度时被调度的PUSCH所占的时域符号数;Kr为编码前上行数据的原始比特数,C为上行数据的编码块数,O为ACK/NACK的码本尺寸,Q’为编码后的ACK/NACK在PUSCH中所占的调制符号数;4与M的乘积表示ACK/NACK最多占用PUSCH上4个OFDM符号上的调制符号,M与N的乘积表示调度给上行数据的调制符号数,βPUSCH表示PUSCH中的上行数据与ACK/NACK的编码速率的比值,即为所述第一比例因子或所述第二比例因子。
图2为本发明通信系统中反馈信息的传输方法实施例二的流程示意图。本实施例在上述通信系统中反馈信息的传输方法实施例一的基础上,对基站侧进行详细说明,如图2所示,本实施例的方法可以包括:
S201、基站向用户设备UE发送下行数据。
本发明实施例中,所述基站可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,所述基站调度的下行子帧构成第二下行子帧集合,即 所述第二下行子帧集合中的下行子帧为所述基站实际调度的子帧。可选地,在步骤S201之前还包括:所述基站向所述UE发送下行控制信息,如所述基站通过下行控制信道向所述UE发送下行控制信息,并通过PDSCH在所述基站调度的下行子帧中向所述UE发送下行数据;可选地,所述下行控制信道可以为PDCCH或EPDCCH。
S202、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。
本发明实施例中,所述基站根据预先设置的下行子帧与用于所述UE反馈在所述下行子帧接收的下行数据所对应的反馈信息的上行子帧之间的时序关系,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;可选地,所述反馈信息为用于确认是否正确接收所述下行数据的信息,如确认ACK信息或非确认NACK信息,与所述上行子帧所关联的所有预配置的下行子帧构成第一下行子帧集合(即所述第一下行子帧集合包括基站为所述上行子帧配置的所有下行子帧)。例如,假设UE被配置了载波1至5,每个载波都是TDD配置2,那么主载波的上行子帧2所关联的第一下行子帧集合为该载波1至5的子帧4、5、6和8,总共20个子帧。由于基站在某时刻通常不会调度所述第一下行子帧集合中的所有下行子帧,即所述第二下行子帧集合为所述第一下行子帧集合的子集,随着CA载波数量的增加,由于所述第二下行子帧集合可能远远小于所述第一下行子帧集合,采用现有的基于所述第一下行子帧集合来确定反馈信息的码本尺寸的方式会产生较大的开销,本发明实施例中提出反馈信息码本的动态回退机制,提出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,以便进一步地,根据所述第一子集或所述第二子集中下行子帧数确定所述反馈信息的码本尺寸,节省了资源开销;可选地,所述第二子集可以等于所述所述第一下行子帧集合。需要说明的是,本发明实施例中并不限定于所述第二下行子帧集合仅包括所述第一子集和所述第二子集两个子集,还可以包括大于两个子集,如第三子集或第四子集。
可选地,本发明实施例中,所述基站可向所述UE发送划分规则指示信令,以使所述UE根据所述划分规则指示信令确定所述第一子集和所述第二子集;或者,所述基站可直接将确定好的所述第一子集和所述第二子集发送 给所述UE。
S203、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。
本发明实施例中,所述基站根据实际调度的下行子帧情况确定所述反馈信息的码本尺寸,即所述基站根据所述第二下行子帧集合中的第一子集或第二子集确定所述反馈信息的码本尺寸,如根据所述第一子集包括的下行子帧数确定的即为第一码本尺寸,如根据所述第二子集包括的下行子帧数确定的即为第二码本尺寸,可见确定的所述反馈信息的码本尺寸小于等于现有技术中所述UE根据所述第一下行子帧集合中下行子帧的个数确定的码本尺。
进一步地,所述基站在确定所述反馈信息的码本尺寸之后,通过码本尺寸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,以使所述UE根据所述码本尺寸指示信息确定所述反馈信息的码本尺寸,从而实现所述UE与所述基站对所述反馈信息的码本尺寸理解一致,进一步地,所述UE根据确定的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;可选地,所述码本尺寸指示信息可以为第一指示信息、第二指示信息或者第一指示信息与第二指示信息的结合信息,其中,所述第一指示信息为所述下行控制信息中的信息,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。
S204、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。
本发明实施例中,为了保持LTE系统的上行单载波特性,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中并通过所述PUSCH在所述上行子帧中将上行数据及所述已编码反馈信息一并发送给所述基站;对应地,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发送的所述上行数据及反馈信息,可选地,所述反馈信息可以为所述UE根据所述码本尺寸对所述反馈信息进行编码后得到的信息。
本发明实施例中,基站向用户设备UE发送下行数据;进一步地,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;进一步地,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;进一步地,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;即可根据所述基站实际调度的下行子帧的情况来确定所述反馈信息的码本尺寸,从而不仅实现了在PUSCH中可以承载更多比特数的ACK/NACK信息,且在使用预定资源量时提高了ACK/NACK和PUSCH中上行数据的性能,或者在保证相同ACK/NACK和PUSCH中上行数据性能的前提下,节省了资源开销。
可选地,所述基站在确定所述反馈信息的码本尺寸之后,通过码本尺寸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的具体过程如下:
可选地,步骤S204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。
本发明实施例中,所述基站通过向所述UE发送第一指示信息(即码本尺寸指示信息)将确定的所述反馈信息的码本尺寸通知给所述UE,其中,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所述第二码本尺寸。可选地,若所述基站确定所述反馈信息的码本尺寸为所述第一码本尺寸,则所述基站通过发送第一指示信息将确定的所述第一码本尺寸通知给所述UE(即所述第一指示信息指示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),以使所述UE根据所述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。若所述基站未向所述UE发送所述第一指示信息,如,对于FDD系统中,意味着所述基站只向所述UE发送了用于调度主载波上PDSCH的主PDCCH(即所述主PDCCH中不包括所述第一指示信息)时,或者对于TDD系统中,意味着所述基站只向所述UE发送了用于调度主载波上PDSCH的主PDCCH且所述主PDCCH中的DAI=1(即所述主PDCCH中不包括所述第一指示信息)时,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(对应地,若所述UE未接收到第一指示 信息,所述UE会直接确定所述反馈信息的码本尺寸为所述第一码本尺寸)。
可选地,所述第一指示信息的表示方式具体详见上述所述UE根据所述第一指示信息确定所述反馈信息的码本尺寸中的关于所述第一指示信息的指示方式部分,此处不再赘述。
可选地,步骤S204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。
本发明实施例中,所述基站通过向所述UE发送第二指示信息(即码本尺寸指示信息)将确定的所述反馈信息的码本尺寸通知给所述UE,其中,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所述第二码本尺寸。可选地,若所述基站确定所述反馈信息的码本尺寸为所述第一码本尺寸,则所述基站通过发送第二指示信息将确定的所述第一码本尺寸通知给所述UE(即所述第二指示信息指示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),以使所述UE根据所述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。若所述基站未向所述UE发送所述第二指示信息,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。
可选地,所述第二指示信息的表示方式具体详见上述所述UE根据所述第二指示信息确定所述反馈信息的码本尺寸中的关于所述第二指示信息的指示方式部分,此处不再赘述。
可选地,步骤S204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。
本发明实施例中,所述基站通过向所述UE发送第一指示信息和第二指示信息(即码本尺寸指示信息)将确定的所述反馈信息的码本尺寸通知给所述UE。可选地,所述第一指示信息为所述下行控制信息中的信息,如所述第一指示信息为调度所述第一下行子帧集合中的下行子帧的下行控制信息中的信息,所述第一指示信息的表示方式具体详见上述所述UE根据所述第一指示信息确定所述反馈信息的码本尺寸中的关于所述第一指示信息的指示方式部分,此处不再赘述。可选地,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,如所述第二指示信息为调度当前用于承载ACK/NACK和上行数据的PUSCH的控制信道(即上行调度授权)中的指示信息;可选地,所述第二指示信息可以通过UL_DAI、UL_index的指示域或新增比特来指示,如可通过新增1比特或UL_DAI当前的2比特中的1比特来指示所述反馈信息的码本尺寸,或者还可通过至少两比特指示更多级的码本尺寸。可选地,预先为所述UE配置所述用于指示所述第一指示信息及所述第二指示信息的相应比特字段的各个状态的解析信息,以便所述UE在接收到所述基站发送的所述第一指示信息和/或所述第二指示信息时,根据所述相应比特字段及预配置的所述解析信息确定所述基站所指示的所述反馈信息的码本尺寸。
本发明实施例中,假设通过2比特来表示所述第一指示信息,所述第一指示信息的4种比特状态为{00,01,10,11},对应的解析信息分别为{第一码本尺寸,第一码本尺寸,第二码本尺寸,第二码本尺寸},假设通过1比特来表示所述第二指示信息,所述1比特的2种状态分别为{0,1},对应地解析信息分别为{第一码本尺寸,第二码本尺寸};1)若所述基站确定所述反馈信息的码本尺寸为所述第一码本尺寸,则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,可选地,所述2比特状态为{00}及所述1比特状态为{0};2)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;3)若所述基站确定所述反馈信息的码本尺寸为所述第一码本尺寸且所述基站未向所述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,可选地,所述1比特状态为{0};4)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;对应地,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(即与所述UE侧确定的码本尺寸一致)。
可选地,所述1比特的两个比特状态还可基于所述第一指示信息指示的第一码本尺寸或第二码本尺寸进一步来细分(可选地,所述第二指示信息也可以指示第三码本尺寸),如果第一指示信息的比特状态为10,即指示了所述第二码本尺寸(即所述第一指示信息指示所述第二码本尺寸)(具体对应所述第二子集),1)此时如果所述第二指示信息的比特状态为0,即按照所述第一指示信息所指示的所述第二码本尺寸,表示所述基站确定的所述反馈信息的码本尺寸为所述第二码本尺寸,2)此时如果所述第二指示信息的比特状态为1,则可以表示所述基站确定的所述反馈信息的码本尺寸为小于所述第二码本尺寸但大于所述第一码本尺寸的第三码本尺寸,其中,所述第三码本尺寸为根据第三子集包括的下行子帧数确定的,所述第三子集可以为所述第二子集的一个子集且所述第三子集包含的下行子帧数大于所述第一子集包含的下行子帧数,所述第三子集包括的下行子帧不同于所述第一子集,可选地,所述第三子集可以包含所述第一子集,也可以与所述第一子集部分重叠,甚至不重叠。
可选地,所述第二指示信息还可以指示第四码本尺寸,具体如下:所述基站在某些情况下可能未向所述UE发送所述第一指示信息,此时可按照两种方案确定所述反馈信息的码本尺寸:1)第一种方案为:所述基站直接确定的所述反馈信息的码本尺寸为所述第一码本尺寸(与所述UE侧确定的码本尺寸一致);2)第二种方案为: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,以使所述UE根据所述第二指示信息确定所述反馈信息的码本尺寸,可选地,所述第二指示信息可以通过UL_DAI、UL_index的指示域或新增比特来指示,如可通过新增1比特或UL_DAI当前的2比特中的1比特来指示所述反馈信息的码本尺寸,可选地,还可通过至少两比特指示更多级的码本尺寸;可选地,预先为所述UE配置所述用于指示所述第二指示信息的相应比特字段的各个状态的解 析信息,以便所述UE在未接收到所述第一指示信息但接收到所述基站发送的用于向所述UE通知所述基站确定的所述反馈信息的码本尺寸的所述第二指示信息时,所述UE可根据所述相应比特字段及预配置的所述解析信息确定所述反馈信息的码本尺寸,如若通过1比特来表示所述第二指示信息时,所述1比特的2种状态分别为{0,1},对应地解析信息分别为{第一码本尺寸,第四码本尺寸},若所述基站确定所述反馈信息的码本尺寸为所述第一码本尺寸,则所述基站将所述上行调度信息(即第二指示信息)中所述1比特状态设置为0,基于所述预配置信息,若UE接收到所述第二指示信息,所述UE根据所述第二指示信息可确定所述反馈信息的码本尺寸为所述第一码本尺寸。
进一步地,为了解决由于所述UE可能漏检控制信道而引起的所述UE与所述基站对于反馈信息的码本尺寸理解不一致的问题,本发明实施例中,提出对所述已编码反馈信息使用不同的扰码来加扰,进而所述基站通过采用不同的扰码进行解扰处理可获知所述UE对反馈信息编码时使用的所述反馈信息的码本尺寸,也就不会出现所述基站与所述UE对于所述反馈信息的码本尺寸理解不一致的问题。
可选地,步骤S204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;从而所述基站通过不同的扰码进行解扰处理便可获知所述UE确定的所述反馈信息的码本尺寸,从而使所述UE对于码本尺寸理解与所述基站保持一致。
图3为本发明UE实施例一的结构示意图,如图3所示,本实施例提供的UE 30可以包括:接收模块301、处理模块302以及发送模块303。
其中,接收模块301用于接收下行数据;
处理模块302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302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302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302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303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303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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
本实施例的UE,可以用于执行本发明上述通信系统中反馈信息的传输方法实施例一中的技术方案,其实现原理和技术效果类似,此处不再赘述。
图4为本发明UE实施例二的结构示意图,如图4所示,本实施例提供的UE 40可以包括处理器401和存储器402。UE 40还可以包括数据接口单元403,该数据接口单元403可以和处理器401相连。其中,数据接口单元403用于接收/发送数据或信息,存储器402用于存储执行指令。当UE 40运行时,处理器401与存储器402之间通信,处理器401调用存储器402中的执行指令,用以执行上述通信系统中反馈信息的传输方法实施例一中的技术方案,其实现原理和技术效果类似,此处不再赘述。上述处理模块302可以由处理器401实现,上述发送模块303和接收模块301可以由数据接口单元403实现,也可以是收发器,发送器,接收器等实现。
图5为本发明基站实施例一的结构示意图,如图5所示,本实施例提供的基站50可以包括:发送模块501、处理模块502以及接收模块503。
其中,发送模块501用于向用户设备UE发送下行数据;
处理模块502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;
处理模块502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503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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
可选地,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。
本实施例的基站,可以用于执行本发明上述通信系统中反馈信息的传输方法实施例二中的技术方案,其实现原理和技术效果类似,此处不再赘述。
图6为本发明基站实施例二的结构示意图,如图6所示,本实施例提供的基站60可以包括处理器601和存储器602。基站60还可以包括数据接口单元603,该数据接口单元603可以和处理器601相连。其中,数据接口单元603用于接收/发送数据或信息,存储器602用于存储执行指令。当基站60运行时,处理器601与存储器602之间通信,处理器601调用存储器602中的执行指令,用以执行上述通信系统中反馈信息的传输方法实施例二中的技术方案,其实现原理和技术效果类似,此处不再赘述。
所述存储器602存储程序。具体地,程序可以包括程序代码,所述程序代码包括计算机操作指令。可选地,存储器602可能包含随机存取存储器(random access memory,简称RAM),也可能还包括非易失性存储器(non-volatile memory),例如至少一个磁盘存储器。
所述数据接口单元603包括接收/发送单元。
上述处理模块502可以由处理器601实现,上述发送模块501和接收模块503可以由数据接口单元603实现,也可以是收发器,发送器,接收器等实现。
本发明实施例中,处理器可以是通用处理器,包括中央处理器(Central Processing Unit,简称CPU)、网络处理器(Network Processor,简称NP) 等;还可以是数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (32)

  1. 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。
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. 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。
  9. 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。
  10. 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。
  11. 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。
  12. 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。
  13. 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。
  14. 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。
  15. 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。
  16. 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。
  17. 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。
  18. 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。
  19. 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。
  20. 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。
  21. 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。
  22. 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。
  23. 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。
  24. 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。
  25. 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。
  26. 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。
  27. 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。
  28. 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。
  29. 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。
  30. 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。
  31. 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。
  32. 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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