WO2012130105A1 - 空间合并配置及应答信息反馈方法、系统和设备 - Google Patents

空间合并配置及应答信息反馈方法、系统和设备 Download PDF

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Publication number
WO2012130105A1
WO2012130105A1 PCT/CN2012/072945 CN2012072945W WO2012130105A1 WO 2012130105 A1 WO2012130105 A1 WO 2012130105A1 CN 2012072945 W CN2012072945 W CN 2012072945W WO 2012130105 A1 WO2012130105 A1 WO 2012130105A1
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WIPO (PCT)
Prior art keywords
downlink carrier
terminal
configuration information
base station
downlink
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PCT/CN2012/072945
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English (en)
French (fr)
Inventor
高雪娟
沈祖康
林亚男
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Classifications

    • 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

Definitions

  • the priority of the Chinese Patent Application for "Spatial Consolidation Configuration and Response Information Feedback Method, System and Apparatus” is incorporated herein by reference.
  • the present invention relates to the field of wireless communications, and in particular, to a spatial combining configuration and response information feedback method, system and device.
  • LTE Long Term Evolution
  • the system has a wider system bandwidth, such as 100MHz, which may be a spectrum that directly allocates 100M bandwidth, as shown in Figure 1.
  • One possibility is to aggregate some of the spectrum allocated to the existing system.
  • the LTE-A system is used for the LTE-A system, that is, Carrier Aggregation (CA).
  • CA Carrier Aggregation
  • the uplink and downlink carriers in the system can be asymmetrically configured, that is, the user may occupy N ⁇ 1 carriers for downlink transmission, M>1.
  • the carriers are uplinked, as shown in Figure 2.
  • the LTE-A system can support up to five carriers for aggregation.
  • the terminal (UE, User Equipment) in the LTE-A Time Division Duplex (TDD) system needs to respond more in the same uplink subframe.
  • ACK/NACK Acknowledgment/negative acknowledgement
  • ACKnowledgment/Non- ACKnowledgment Acknowledgment/NACK, ACKnowledgment/Non- ACKnowledgment
  • M the number of downlink subframes that need to perform ACK/NACK feedback in the same uplink subframe
  • the values of different uplink subframes and different uplink and downlink configurations are different.
  • the value of the M corresponding to the same uplink subframe may be different.
  • Table 1 the number of k values corresponding to each uplink subframe is the UE needs to be in the uplink subframe.
  • the UE After completing the demodulation and decoding of the data in the downlink subframe "-, the UE will feed back to the base station on the uplink subframe" whether the data on the downlink subframe needs to be retransmitted (ie, ACK/NACK). .
  • Up-and-down row configuration (UL-DL sub-frame n ( Subframe n )
  • the Physical Uplink Control CHannel format (PUCCH) format 3 (the PUCCH format 3) and the physical uplink control channel format with channel selection lb (PUCCH format lb with channel selection) ) multiplexing transmission of ACK/NACK information.
  • the maximum number of transmission bits of PUCCH format 3 is 20 bits, and the maximum number of transmission bits of PUCCH format lb with channel selection is 4 bits.
  • the ACK/NACK information corresponding to the downlink carrier of the multi-codeword (ie, 2 codeword) transmission mode is spatially multiplexed (Spatial Bundling) to reduce the number of transmission bits of the ACK/NACK information.
  • the so-called spatial combination is to logically AND the ACK/NACK information of a plurality of code words in one downlink subframe of a downlink carrier whose transmission mode is multiple codewords.
  • the ACK/NACK information of multiple codewords is spatially merged by default.
  • the embodiments of the present invention provide a method and a device for spatially merging configurations, which are used to provide a scheme for a base station to flexibly configure whether to spatially combine response information of downlink carriers to a terminal.
  • a spatial consolidation configuration method comprising:
  • the base station determines, for each downlink carrier, whether the terminal needs to perform spatial combining on the response information of the downlink carrier.
  • the base station sends, to the terminal, configuration information for spatially combining the response information of the downlink carrier according to the determination result.
  • a base station, the base station comprising:
  • a determining unit configured to determine, for each downlink carrier, whether the terminal needs to perform null response information on the downlink carrier Merger
  • a configuration unit configured to send, to the terminal, configuration information for spatially combining the response information of the downlink carrier according to the determination result.
  • the base station can flexibly configure whether the terminal spatially combines the response information of the downlink carrier according to requirements.
  • the embodiment of the invention further provides a method, a system and a device for feeding back response information, which are used to provide a solution for the terminal to feedback response information according to the configuration of the base station.
  • a response information feedback method comprising:
  • the terminal receives the configuration information of whether the downlink carrier's response information is spatially combined, and the terminal determines whether to perform spatial combining on the downlink carrier's response information according to the configuration information, and if yes, spatially combines the downlink carrier response information. After the feedback to the base station, the response information of the downlink carrier is directly fed back to the base station.
  • a terminal comprising:
  • a receiving unit configured to receive configuration information that is sent by the base station to perform spatial combining on the response information of the downlink carrier
  • a determining unit configured to determine, by the terminal, whether to perform spatial combining on the response information of the downlink carrier according to the configuration information
  • the feedback unit is configured to: when the determining unit determines to be YES, spatially combine the response information of the downlink carrier and feed back to the base station, and when the determining unit determines to be no, directly feed back the response information of the downlink carrier to the base station.
  • a wireless communication system comprising:
  • a base station configured to determine, for each downlink carrier, whether the terminal needs to perform spatial combining of the response information of the downlink carrier, and send, to the terminal, configuration information for spatially combining the response information of the downlink carrier according to the determination result; Receiving, by the base station, configuration information for spatially combining the response information of the downlink carrier; determining, according to the configuration information, whether to perform spatial combining on the response information of the downlink carrier, and if yes, performing spatial combining and combining the response information of the downlink carrier To the base station, otherwise, the response information of the downlink carrier is directly fed back to the base station.
  • the terminal may determine whether to perform spatial combining of the response information of the downlink carrier according to the configuration information sent by the base station, and then perform spatial combining on the response information before the feedback response information according to the determination result, thereby implementing the terminal according to the determination result.
  • the configuration of the base station feedback feedback information is a schematic diagram of a single spectrum system in the prior art
  • FIG. 2 is a schematic diagram of a spectrum aggregation system in the prior art
  • FIG. 3 is a schematic flowchart of a method according to an embodiment of the present disclosure
  • FIG. 5A is a schematic diagram of spatial merging in the first embodiment of the present invention.
  • FIG. 5B is a schematic diagram of spatial merging in Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of a system according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another device according to an embodiment of the present invention.
  • the embodiment of the present invention provides a spatial merging configuration method, in which the base station sends a downlink carrier to the terminal according to the actual situation, in order to enable the terminal to perform spatial merging on the downlink carrier.
  • the configuration information for the spatial combination of the response information is provided.
  • a spatial merging configuration method provided by an embodiment of the present invention includes the following steps:
  • Step 30 The base station determines, for each downlink carrier of the one or more downlink carriers that the UE configures or activates, whether the terminal needs to perform spatial combining on the response information of the downlink carrier, where the one or more downlink carriers may be used.
  • Downlink carrier of multi-codeword transmission mode
  • the spatial combining of the response information of the downlink carrier refers to logically processing the ACK/NACK information of each codeword in the same downlink subframe of the downlink carrier.
  • Step 31 The base station sends, to the terminal, configuration information for spatially combining the response information of the downlink carrier according to the determination result.
  • the base station may send the configuration information to the terminal by using the high layer signaling or the PDCCH signaling.
  • the specific implementation of the configuration information that the base station sends the configuration information to the terminal through the high layer signaling may use the following four methods:
  • the base station sends, to the terminal, configuration information for spatially combining the response information of the downlink carrier to the terminal, by using the high layer signaling, for each of the one or more downlink carriers;
  • the information may be carried in the first layer of the downlink information.
  • the one-bit information is used to indicate whether the response information of the downlink carrier is spatially combined.
  • the carrier identifier refers to the determination. Of course, it may also be a downlink carrier that determines the transmission of the high layer signaling, and the 1-bit information indicates whether the response information of the downlink carrier is spatially combined.
  • the base station selects a downlink carrier set from the downlink carrier set that is pre-configured or pre-configured with the terminal to perform spatial combining according to the determination result, and sends the information of the selected downlink carrier set to the terminal by using the high layer signaling to indicate the terminal.
  • the base station does Determining, by the one or more downlink carriers, the downlink carrier corresponding to the response information that needs to be spatially combined by the terminal, selecting only one or more downlink carrier sets that are pre-configured or previously agreed with the terminal for spatial combining Determining a downlink carrier set of the downlink carrier, and transmitting, by using the high layer signaling, the number information of the selected downlink carrier set to the terminal, to indicate that the terminal spatially combines the response information of the downlink carrier in the downlink carrier set, where the high layer signaling
  • the base station selects a downlink carrier set from the downlink carrier set that is pre-configured or pre-configured with the terminal and does not perform spatial combining according to the determination result, and sends the information of the selected downlink carrier set to the terminal by using the high layer signaling. Instructing the terminal not to respond to all downlink carriers in the downlink carrier set For example, the base station determines a downlink carrier corresponding to the response information of the one or more downlink carriers that does not require the terminal to perform spatial combining, and one or a spatial combination that is pre-configured or pre-configured with the terminal.
  • the base station sends configuration information to the terminal by using the high layer signaling, where the downlink information carries the terminal for each of the one or more downlink carriers.
  • the high-level signaling may carry 5-bit information, and each bit information indicates whether the response information of one downlink carrier needs to be spatially combined.
  • the specific implementation of the eNB transmitting the configuration information to the terminal by using the PDCCH signaling may use the following four methods: First, the base station sends, by using the PDCCH signaling, the response information of the downlink carrier scheduled by the PDCCH signaling to the terminal.
  • the configuration information of the spatial merging is performed, that is, the base station sends, to the terminal, the PDCCH signaling of the downlink carrier to perform spatial combining of the response information of the downlink carrier to the downlink carrier.
  • Configuration information ;
  • the base station sends configuration information to the terminal for spatially combining the response information of the downlink carrier where the PDCCH signaling is transmitted by using the PDCCH signaling, that is, the base station downlinks each of the one or more downlink carriers. Transmitting, by the PDCCH signaling transmitted on the downlink carrier, configuration information for spatially combining the response information of the downlink carrier to the terminal;
  • the base station selects a downlink carrier set from the downlink carrier set that is pre-configured or pre-configured with the terminal to perform spatial combining, and sends the information of the selected downlink carrier set to the terminal by using PDCCH signaling to indicate the terminal.
  • the response information of all downlink carriers in the downlink carrier set is spatially combined.
  • the base station determines, in the one or more downlink carriers, the downlink carrier corresponding to the response information that needs to be spatially combined by the terminal, from one or more downlink carrier sets that are pre-configured or pre-configured with the terminal for spatial combining.
  • the downlink carrier set of the determined downlink carrier is sent, and the number information of the selected downlink carrier set is sent to the terminal by the PDCCH signaling, to indicate that the terminal spatially combines the response information of the downlink carrier in the downlink carrier set, where the PDCCH is
  • the bit field carrying the configuration information in the command is K bits, and is used to indicate the number information of the selected downlink carrier set, and “log 2 NN is the number of downlink carrier sets that are pre-configured or spatially combined with the terminal in advance;
  • the base station selects one downlink carrier set from the downlink carrier set that is pre-configured or pre-configured with the terminal and does not perform spatial combining according to the determination result, and sends the information of the selected downlink carrier set to the terminal by using PDCCH signaling to indicate The terminal does not spatially combine the response information of all downlink carriers in the downlink carrier set. For example, the base station determines a downlink carrier corresponding to the response information of the one or more downlink carriers that does not require the terminal to perform spatial combining, and one or more downlink carriers that are pre-configured or pre-configured with the terminal and are not spatially combined.
  • Selecting a downlink carrier set that includes only the determined downlink carrier and transmitting, by using PDCCH signaling, the number information of the selected downlink carrier set to the terminal, to indicate that the terminal does not spatially combine the response information of the downlink carrier in the downlink carrier set.
  • the bit field carrying the configuration information in the PDCCH signaling is K bits, and is used to indicate the number information of the selected downlink carrier set, and “log 2 NN is a downlink carrier set that is pre-configured or pre-configured with the terminal for spatial combining. Number.
  • the PDCCH signaling sent by the base station carries one bit of configuration information for indicating spatial combination, and is used to indicate that the terminal performs spatial combining or no spatial merging of response information of all downlink carriers scheduled by the PDCCH signaling;
  • each of the downlink carriers scheduled for the PDCCH signaling carries independent configuration information that the terminal spatially merges the response information of the downlink carrier; for example, when the PDCCH signaling schedules three downlink carriers, the PDCCH signaling may carry 3-bit information, and each bit information indicates whether the response information of one downlink carrier needs to be spatially combined;
  • the PDCCH signaling sent by the base station carries information of one downlink carrier set in the downlink carrier set that is pre-configured or pre-configured with the terminal, to indicate that the terminal is all downlink carriers in the downlink carrier set.
  • the acknowledgment information is spatially combined; the downlink carrier in the downlink carrier set that is pre-configured or pre-configured with the terminal to perform spatial combining is the downlink carrier scheduled by the PDCCH signaling.
  • the PDCCH signaling sent by the base station carries the number information of the downlink carrier set, where the downlink carrier set is selected by the base station from one or more downlink carrier sets that are pre-configured or previously agreed with the terminal for spatial combining.
  • the downlink carrier set of the downlink carrier corresponding to the PDCCH signaling and the acknowledgment information for the terminal to perform spatial merging wherein the bit field of the bearer configuration information in the PDCCH signaling is K bits, and is used to indicate the number of the selected downlink carrier set.
  • Information, K [ ⁇ og 2 N , N is the number of downlink carrier sets pre-configured or spatially combined with the terminal in advance;
  • the PDCCH signaling sent by the base station carries information of a downlink carrier set in a downlink carrier set that is not configured or pre-configured with the terminal in advance, to indicate that the terminal does not use all downlink carriers in the downlink carrier set.
  • the acknowledgment information is spatially combined; the downlink carrier in the downlink carrier set that is pre-configured or pre-configured with the terminal and not spatially combined is the downlink carrier scheduled by the PDCCH signaling.
  • the PDCCH signaling sent by the base station carries the number information of the downlink carrier set, where the downlink carrier set is selected only by the base station from one or more downlink carrier sets that are pre-configured or previously agreed with the terminal and are not spatially combined.
  • the downlink carrier set of the downlink carrier corresponding to the response information of the PDCCH signaling and not requiring the terminal to perform spatial combining, wherein the bit field of the bearer configuration information in the PDCCH signaling is K bits, and is used to indicate the selected downlink carrier set.
  • Number information, "log 2 NN is the number of downlink carrier sets that are pre-configured or spatially combined with the terminal in advance.
  • the base station may notify the terminal whether the configuration information delivered by the PDCCH signaling is valid, or notify the terminal of the PDCCH signaling by using the high layer signaling, before the configuration information is sent to the terminal by using the PDCCH signaling.
  • the configuration information is included, that is, whether the terminal is configured to support whether the downlink carrier is spatially combined with the response information by using PDCCH signaling.
  • the terminal may be notified whether the configuration information is included in the PDCCH signaling by using the high layer signaling.
  • the bit field may be reused in the original bit field in the PDCCH, or may be a new bit field in the PDCCH.
  • step 30 The specific implementation in step 30 can be as follows:
  • the base station determines that the terminal needs to spatially combine the response information of one or more downlink carriers
  • the base station preferentially determines that the terminal needs to perform spatial combining on the downlink secondary carrier and/or the downlink carrier with less packets scheduled in the time domain.
  • the high layer signaling may be: radio resource control (RRC) signaling or media access control (MAC) signaling.
  • RRC radio resource control
  • MAC media access control
  • the PDCCH signaling may use a downlink control information format (DCI Format) 2/2A/2B/2C.
  • DCI Format downlink control information format
  • an embodiment of the present invention further provides a response information feedback method, including the following steps:
  • Step 40 The terminal receives configuration information that is sent by the base station to perform spatial combining on the response information of the downlink carrier.
  • Step 41 The terminal determines, according to the configuration information, whether to perform spatial combining on the downlink carrier response information. If yes, the downlink carrier response information is spatially combined and then fed back to the base station. Otherwise, the downlink carrier response information is directly fed back to the base station. .
  • the terminal may receive the configuration information by using a high layer signal or PDCCH signaling.
  • the terminal #4 determines whether to perform spatial merging of the response information of the downlink carrier according to the configuration information, and the specific implementation may use the following four methods: First, the terminal determines, according to the configuration information of each downlink carrier that is received by the high-layer signaling, whether to perform spatial combining on the response information of the downlink carrier, where the configuration information of each downlink carrier is separately received by independent high-layer signaling;
  • the terminal determines, according to the configuration information received by the high layer signaling, a downlink carrier set, where the downlink carrier set is one of multiple downlink carrier sets that are pre-configured by the base station or pre-configured with the base station to perform spatial combining. Determining, by the terminal, spatially combining the response information of each downlink carrier in the downlink carrier set;
  • the terminal determines, according to the configuration information received by the high layer signaling, a downlink carrier set, where the downlink carrier set is one of multiple downlink carrier sets that are pre-configured by the base station or agreed with the base station in advance and are not spatially combined.
  • the terminal determines that the response information of each downlink carrier in the downlink carrier set is not spatially combined.
  • the terminal according to the configuration information received by the high layer signaling, and the independent configuration information corresponding to each downlink carrier. Determining whether to perform spatial combining on the response information of the corresponding downlink carrier, where the configuration information received by the terminal through the high layer signaling carries the independent configuration information for each downlink carrier of the multiple downlink carriers.
  • the terminal determines whether to perform spatial merging of the response information of the downlink carrier in the configuration information in the step 41.
  • the specific implementation may be implemented in the following four manners:
  • the terminal determines, according to the configuration information carried in the PDCCH signaling, whether to perform spatial combining on the response information of the downlink carrier scheduled by the PDCCH signaling;
  • the terminal determines, according to the configuration information carried in the PDCCH signaling, whether to perform spatial combining on the response information of the downlink carrier that transmits the PDCCH signaling;
  • the third terminal determines, according to the configuration information carried in the PDCCH signaling, a downlink carrier set, where the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or previously agreed with the base station to perform spatial combining. Determining, by the terminal, spatially combining the response information of each downlink carrier in the downlink carrier set;
  • the terminal determines, by the terminal, a downlink carrier set according to the configuration information carried in the PDCCH signaling, where the downlink carrier set is one of multiple downlink carrier sets that are pre-configured by the base station or agreed with the base station in advance and are not spatially combined.
  • the terminal determines that the response information of each downlink carrier in the downlink carrier set is not spatially combined.
  • the terminal may have the following four situations:
  • the terminal uses, according to the 1 bit carried in the PDCCH signaling, configuration information indicating space combination,
  • the response information of all downlink carriers scheduled for the PDCCH signaling is spatially combined or not spatially combined;
  • the second, the terminal determines, according to the independent configuration information corresponding to each downlink carrier in the configuration information carried in the PDCCH signaling, whether to perform spatial combining on the response information of the corresponding downlink carrier, where the PDCCH signaling is used.
  • the carried configuration information includes independent configuration information of each downlink carrier of all downlink carriers scheduled for the PDCCH signaling;
  • the third terminal determines, according to the configuration information carried in the PDCCH signaling, a downlink carrier set, where the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or previously agreed with the base station to perform spatial combining.
  • the terminal determines to spatially combine the response information of each downlink carrier in the downlink carrier set; the downlink carrier in the downlink carrier set that is pre-configured or pre-configured with the base station by each base station is the PDCCH signaling scheduling.
  • a downlink carrier set according to the configuration information carried in the PDCCH signaling, where the downlink carrier set is one of multiple downlink carrier sets that are pre-configured by the base station or agreed with the base station in advance and are not spatially combined.
  • the terminal determines that the response information of each downlink carrier in the downlink carrier set is not spatially merged; the downlink carrier in the downlink carrier set that is not pre-configured or pre-configured with the base station by each base station is the PDCCH.
  • Downlink carrier for signaling scheduling is the response information of each downlink carrier in the downlink carrier set is not spatially merged; the downlink carrier in the downlink carrier set that is not pre-configured or pre-configured with the base station by each base station is the PDCCH.
  • the terminal may perform the notification sent by the base station according to the high layer signaling, before the terminal determines whether to perform the spatial combining of the response information of the downlink carrier according to the configuration information.
  • the high layer signaling may be: RRC signaling or MAC signaling.
  • the PDCCH signaling may use a downlink control information format (DCI Format) 2/2A/2B/2C.
  • DCI Format downlink control information format
  • the specific configuration method is as follows:
  • Method 1 Whether each downlink carrier spatially combines ACK/NACK feedback information of multiple codewords by high-level signaling semi-static configuration.
  • the high layer signaling may be RRC signaling or MAC layer signaling
  • the high layer signaling may separately configure, for each downlink carrier, whether to perform spatial combining on ACK/NACK feedback information of multiple codewords;
  • One bit in the configuration information of each downlink carrier indicates whether the downlink carrier spatially combines the ACK/NACK feedback information of the multi-codeword, that is, when the bit is "1", it indicates that the downlink carrier is ACK/for multiple codewords.
  • the NACK feedback information is spatially merged. When it is "0", it indicates that it is not performed. The above relationship may be reversed.
  • Method 1-2 The high layer signaling notifies the UE whether a downlink carrier set is spatially merged;
  • the K-bit high-level signaling may notify the UE to perform the ACK/NACK spatial combining downlink carrier set, or notify
  • the UE does not perform the ACK/NACK spatial combining downlink carrier set; the specific indication relationship may be pre-determined by the base station and the UE;
  • A is a high-level signaling preconfigured set the number of downlink carriers
  • the downlink carrier set is one of a plurality of downlink carrier sets pre-configured by the high-layer signaling or pre-agreed by the UE and the base station, and each downlink carrier set may be empty or at least one downlink carrier;
  • the configuration of the downlink carrier set may be configured based on the carrier number
  • Method 1-3 The high layer signaling configures whether multiple downlink carriers are used to spatially combine ACK/NACK feedback information of multiple codewords;
  • the K-bit high-level signaling performs the ACK/NACK space merging for all the configuration/activation downlink carriers of the UE, and uses the bitmap mode.
  • K N
  • N is the number of downlink carriers aggregated or activated by the UE, and each bit corresponds to one downlink.
  • Carrier when the bit is " ⁇ ", it indicates that the downlink carrier performs spatial combining on the ACK/NACK feedback information of the multi-codeword, and when it is "0", it indicates that it is not performed, and the above-mentioned correspondence may be reversed;
  • Method 2 Whether each downlink carrier spatially combines ACK/NACK feedback information of multiple codewords is dynamically configured by PDCCH signaling.
  • Method 2-1 The K( ⁇ >1) bit in the PDCCH indicates whether the downlink carrier scheduled by the PDCCH performs spatial combining on the ACK/NACK feedback information;
  • the K bit may be a reuse of an original bit field in the PDCCH, or may be a newly added bit field in the PDCCH;
  • the ACK/NACK feedback information is spatially combined. When the bit is "0", it indicates that the downlink carrier does not perform spatial combining on the ACK/NACK feedback information of the multi-codeword, and the foregoing relationship may be reversed;
  • K 1 bit, at this time, the 1 bit indicating the ACK/NACK spatial combination in the PDCCH is "1", indicating that the downlink carrier of all multi-codeword transmission modes scheduled by the PDCCH performs spatial combining on the ACK/NACK feedback information, the bit If the value is "0", the downlink carrier of all multi-codeword transmission modes scheduled by the PDCCH is not spatially combined with the ACK/NACK feedback information, and the foregoing relationship may be reversed;
  • the downlink carrier set may Empty, or include at least one carrier of a downlink carrier that can be simultaneously scheduled by one PDCCH in one subframe; configuration of the downlink carrier set can be configured based on the carrier number;
  • K may also be the number of downlink carriers that one PDCCH can simultaneously schedule in one subframe.
  • the bitmap mode may be adopted, and each bit in the K bit corresponds to a downlink carrier that the PDCCH can simultaneously schedule, and the bit is configured by using the bit. Whether the downlink carrier performs ACK/NACK space combining;
  • the content indicated by the K-bit indication field in the plurality of PDCCHs of the downlink subframe corresponding to the same uplink subframe to perform ACK/NACK feedback on the downlink carrier should be consistent;
  • the UE may be considered as a scheduling error, and may further perform ACK/NACK space combining on the PDCCH configured carrier to prevent the feedback bit number from exceeding the transmission capacity;
  • the UE may consider that it is a scheduling error, and may further perform spatial combining on the ACK/NACK of the downlink carriers of all multi-codeword transmission modes, and then perform feedback;
  • the K bit may be a reuse of an original bit field in the PDCCH, or may be a newly added bit field in the PDCCH;
  • the downlink carrier indicating the PDCCH is spatially combined with the ACK/NACK feedback information, and when the bit is "0", the downlink carrier is instructed to the ACK/NACK feedback.
  • the information is not spatially combined, and the above correspondence may be reversed;
  • the content indicated by the K-bit indication field in the plurality of PDCCHs transmitted in the downlink subframe corresponding to the ACK/NACK feedback in the same uplink subframe on the downlink carrier should be consistent;
  • the UE may consider that the carrier is configured to perform ACK/NACK space combining on the PDCCH configured to avoid the number of feedback bits exceeding the transmission capacity; or
  • the UE may consider that it is a scheduling error, and may further perform spatial combining on the ACK/NACK of the downlink carriers of all multi-codeword transmission modes, and then perform feedback;
  • Method 2-3 The K bit (K ⁇ 1) in the PDCCH indicates whether a downlink carrier set spatially merges the ACK/NACK feedback information;
  • the K bit may be a reuse of the original bit field in the PDCCH, or may be a newly added bit field in the PDCCH; ⁇ : ⁇ 2 ⁇ , where A is a pre-configured downlink carrier set number of the high layer signaling;
  • the K-bit high-layer signaling in the PDCCH may notify the UE to perform the ACK/NACK spatial combining downlink carrier set. And, or notifying the UE that the downlink carrier set is not ACK/NACK spatially combined; the specific indication relationship may be pre-agreed by the base station and the UE;
  • the downlink carrier set may be one of a plurality of downlink carrier sets pre-configured by the high-layer signaling or pre-agreed by the UE and the base station, and may be empty or at least one downlink carrier;
  • the configuration of the downlink carrier set may be configured based on the carrier number
  • the content indicated by the K-bit indication field in the PDCCH corresponding to the ACK/NACK feedback in the same uplink subframe and the PDCCH in the PDCCH transmitted in the multiple downlink subframes should be consistent;
  • the UE may consider that the carrier is configured to perform ACK/NACK space combining on the PDCCH configured to avoid the number of feedback bits exceeding the transmission capacity; or
  • Method 2-4 High-level signaling pre-configuration Whether the UE supports the use of PDCCH signaling to dynamically configure whether each downlink carrier spatially combines ACK/NACK feedback information of multiple codewords;
  • the high layer signaling may be RRC signaling or MAC layer signaling
  • 1 bit in the high layer signaling is used to indicate whether the UE supports dynamic configuration of whether each downlink carrier performs ACK/NACK space combining with PDCCH signaling. When the bit is "1", it indicates that the bit is "0". Indicates that it is not supported, or vice versa;
  • the notification manner of the PDCCH is as shown in methods 2-1, 2-2, and 2-3;
  • the bit field in the PDCCH used to indicate whether each downlink carrier performs ACK/NACK spatial combining is valid only when the UE supports the PDCCH signaling to dynamically configure whether each downlink carrier performs ACK/NACK space combining.
  • the PDCCH mainly uses a DCI format for scheduling downlink multi-codeword transmission, for example: DCI format 2/2A/2B/2C;
  • each downlink carrier in the foregoing method may be that ACK/NACK space is not combined, and ACK/NACK space combining may be performed.
  • whether each downlink carrier is dynamically configured by using PDCCH signaling is performed.
  • the default configuration of each downlink is ACK/NACK space merging, which can avoid the ACK/NACK feedback bit number exceeding the transmission capacity when the PDCCH that configures whether the downlink carrier performs spatial combining is lost.
  • the base station should preferentially perform ACK/NACK space combining on the downlink secondary carrier configuration, that is, preferentially ensure that the downlink primary carrier does not perform ACK/NACK space combining;
  • the base station should preferentially configure the downlink carriers with fewer downlink subframes in the time domain to perform spatial combining, that is, preferentially guarantee that the time domain schedules more data packets.
  • the downlink carrier does not perform ACK/NACK spatial merging to avoid unnecessary retransmission due to merging; that is, in the first downlink subframe to be scheduled, the base station may preferentially determine ACK/NACK spatial merging for the non-existing scheduled downlink carrier. ;
  • the above method is equally applicable to ACK/NACK transmission on PUCCH and PUSCH.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 5B shows an example of configuring the ACK/NACK space combination in the case of the 2 downlink carrier aggregation.
  • the default configuration of each downlink carrier is not to perform ACK/NACK space merging.
  • the base station side semi-statically configures the ACK/NACK space combination of each downlink carrier by using RRC signaling; configures downlink carrier 1 to perform spatial combining, and downlink carrier 2 performs spatial combining;
  • Method 1-1 The RRC signaling corresponding to the 1-bit configuration ACK/NACK space of the downlink carrier 1 is set to "0", indicating that ACK/NACK spatial combining is not performed, and the 1-bit configuration ACK/NACK space combining of the downlink carrier 2 is performed.
  • the RRC signaling is set to "1" to indicate that the ACK/NACK space is merged;
  • Method 1-3 The base station uses a LTE signaling to notify the UE whether all of the downlink carriers are ACK/NACK spatially merged by using one RRC signaling.
  • the first bit in the signaling corresponds to whether downlink carrier 1 performs ACK/NACK spatial combining, and the second bit corresponds to whether downlink carrier 2 performs ACK/NACK spatial combining.
  • the base station sends 2-bit RRC signaling "0 1", 0 means no spatial merging, and 1 means spatial merging;
  • Method 1-1 Receive RRC signaling corresponding to each downlink carrier, and the ACK/NACK space merging field in the RRC signaling of the downlink carrier 1 is "0", and the UE determines that the downlink carrier 1 is not spatially combined, and the downlink carrier 2 is not.
  • RRC signaling The ACK/NACK spatial merging field is " ⁇ , the UE determines to spatially combine the downlink carrier 2, as shown in FIG. 5A;
  • Method 1-2 Receive RRC signaling, and obtain 2 bits of RRC signaling for ACK/NACK space merging.
  • the carrier set configuration information "1 0", according to the correspondence in the table 2, the UE determines that only the downlink carrier 2 is included in the carrier set, that is, only the downlink carrier 2 is spatially combined, as shown in FIG. 5A;
  • Method 1-3 Receive RRC signaling, and obtain carrier set configuration information "0 1" for ACK/NACK spatial combining in 2 bits of RRC signaling, and determine, according to the bitmap correspondence, that only the downlink carrier 2 is included in the carrier set, that is, Only downlink carrier 2 is spatially combined, as shown in FIG. 5A.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • FIG. 5B shows an example of configuring ACK/NACK space combining using the method 2 in the case of 4 downlink carrier aggregation.
  • the PDCCH on the downlink primary carrier can schedule data transmission on the downlink carrier 2
  • the downlink carrier 1 is the downlink primary carrier
  • the data transmission on the downlink carrier 1 can only be scheduled by the PDCCH on the downlink carrier 1, and the downlink carrier 3 and 4
  • the cross-carrier scheduling is not supported, and the data transmission on the downlink carrier 3 is scheduled by the PDCCH on the downlink carrier 3, and the data transmission on the downlink carrier 4 is scheduled by the PDCCH on the downlink carrier 4; at this time, the default configuration of each downlink carrier For ACK/NACK space merging.
  • the base station side dynamically configures whether each downlink carrier performs ACK/NACK space merging through PDCCH signaling, configures downlink carriers 1 and 3 to perform spatial merging, and downlink carriers 2 and 4 perform spatial merging;
  • Method 2-1 The base station transmits a PDCCH scheduling downlink carrier 1 on downlink carrier 1 (downlink primary carrier), and sets a 1-bit ACK/NACK spatial combining indication field in the PDCCH to "0", indicating that the PDCCH scheduling is downlink.
  • Carrier 1 does not perform ACK/NACK spatial combining; the base station transmits a PDCCH scheduling downlink carrier 2 on downlink carrier 1 (downlink primary carrier), and sets a 1-bit ACK/NACK space combining indication field in the PDCCH to " ⁇ ", indicating that The PDCCH-scheduled downlink carrier 2 performs ACK/NACK spatial merging; the base station transmits a PDCCH scheduling downlink carrier 3 on the downlink carrier 3, and sets a 1-bit ACK/NACK spatial combining indication field in the PDCCH to “0”, indicating the PDCCH.
  • the scheduled downlink carrier 3 does not perform ACK/NACK spatial combining; the base station transmits a PDCCH scheduling downlink carrier 4 on the downlink carrier 4, and sets a 1-bit ACK/NACK spatial combining indication field in the PDCCH to " ⁇ ", indicating the PDCCH scheduling.
  • Downlink carrier 4 performs ACK/NACK space combining;
  • Method 2-2 The base station transmits a PDCCH scheduling downlink carrier 1 on the downlink carrier 1 (downlink primary carrier), and sets a 1-bit ACK/NACK spatial combining indication field in the PDCCH to "0", indicating that the PDCCH is transmitted downstream.
  • Carrier 1 does not perform ACK/NACK spatial combining; the base station transmits a PDCCH scheduling downlink carrier 2 on downlink carrier 1 (downlink primary carrier), and sets a 1-bit ACK/NACK spatial combining indication field in the PDCCH to "0", indicating The downlink carrier 1 transmitting the PDCCH does not perform ACK/NACK spatial combining; the base station transmits a PDCCH scheduling downlink carrier 3 on the downlink carrier 3, and sets a 1-bit ACK/NACK spatial combining indication field in the PDCCH to "0", indicating The downlink carrier 3 transmitting the PDCCH does not perform ACK/NACK spatial combining; the base station transmits a PDCCH scheduling the downlink carrier 4 on the downlink carrier 4, and sets a 1-bit ACK/NACK space combining indication field in the PDCCH to "1", Indicates that the downlink carrier 4 transmitting the PDCCH performs ACK/NACK space combining;
  • Method 2-4 The base station pre-configures the UE by using RRC signaling to dynamically configure ACK/NACK space combining with the PDCCH, that is, the indication bit is set to "1" and sent to the UE; then the base station can follow the above method 2-1, 2- 2 or 2-3 Configuring whether each downlink carrier of the UE performs ACK/NACK space merging through the PDCCH, the specific content is not described in detail;
  • Method 2-1 The UE receives the PDCCH scheduling the downlink carrier 1 on the downlink carrier 1 (downlink primary carrier), and determines the scheduling of the PDCCH by using the 1-bit ACK/NACK spatial combining indication field in the PDCCH to be "0".
  • the downlink carrier 1 does not perform ACK/NACK spatial combining; the UE receives the PDCCH scheduling the downlink carrier 2 on the downlink carrier 1 (downlink primary carrier), and the indication field of the 1-bit ACK/NACK space in the PDCCH is "1".
  • Method 2-2 The UE receives the PDCCH scheduling the downlink carrier 1 on the downlink carrier 1 (downlink primary carrier), and determines that the PDCCH is transmitted by using the 1-bit ACK/NACK spatial combining indication field in the PDCCH to be "0".
  • the downlink carrier 1 does not perform ACK/NACK spatial combining; the UE receives the PDCCH scheduling the downlink carrier 2 on the downlink carrier 1 (downlink primary carrier), and the indication field of the 1-bit ACK/NACK space in the PDCCH is "0".
  • the UE Whether the carrier 2 performs the dynamic configuration information of the ACK/NACK space combination, so the UE operates the downlink carrier 2 according to the default ACK/NACK space combining attribute, that is, the ACK/NACK space combining is performed by default; the UE receives the downlink carrier 3 Scheduling the PDCCH of the downlink carrier 3, and determining that the downlink carrier 3 transmitting the PDCCH does not perform ACK/NACK spatial combining by using the 1-bit ACK/NACK spatial combining indication field in the PDCCH is "0"; the UE is on the downlink carrier 4.
  • Method 2-4 The UE first receives RRC signaling that configures whether the UE dynamically configures ACK/NACK space combining with the PDCCH, and determines that the supported PDCCH is dynamically configured for spatial combining, that is, PDCCH, according to the 1-bit RRC signaling being "1". There is a bit field indicating the ACK/NACK space combination, and the UE further obtains the ACK/NACK space merging configuration information according to the indication field in the PDCCH according to the foregoing method 2-1, 2-2 or 2-3, and details are not described herein.
  • an embodiment of the present invention further provides a wireless communication system, where the system includes:
  • the base station 60 is configured to determine, for each downlink carrier of the one or more downlink carriers that are configured or activated by the UE, whether the terminal needs to perform spatial combining on the downlink carrier, and whether the downlink carrier is sent to the terminal according to the determination result.
  • the terminal 61 is configured to receive, by the base station, configuration information for spatially combining the response information of the downlink carrier, and determine, according to the configuration information, whether to perform spatial combining on the downlink carrier response information, and if yes, the downlink carrier response information. The spatial combination is performed and then fed back to the base station. Otherwise, the response information of the downlink carrier is directly fed back to the base station.
  • an embodiment of the present invention further provides a base station, where the base station includes:
  • the determining unit 70 is configured to determine, for each downlink carrier of the one or more downlink carriers configured or activated by the UE, whether the terminal needs to perform spatial combining on the response information of the downlink carrier.
  • the configuration unit 71 is configured to send, to the terminal, configuration information for spatially combining the response information of the downlink carrier according to the determination result.
  • the configuration unit 71 is configured to:
  • the configuration unit 71 sends the configuration information to the terminal by using the high layer signaling, which specifically includes:
  • the configuration information of whether to perform space combination on the response information of the downlink carrier is sent to the terminal through the high layer signaling;
  • the configuration information is sent to the terminal by using the high-level signaling, and each of the downlink carriers for the plurality of downlink carriers carries independent configuration information for whether the terminal spatially combines the response information of the downlink carrier.
  • the configuration unit 71 sends the configuration information to the terminal by using the PDCCH signaling, which specifically includes:
  • the configuration unit 71 is configured to:
  • the transmitted PDCCH signaling carries one bit of configuration information for indicating spatial combination, and is used to indicate that the terminal performs spatial combining or no spatial merging of response information of all downlink carriers scheduled by the PDCCH signaling; or
  • each of the downlink carriers that are scheduled for the PDCCH signaling carries configuration information that the terminal spatially merges the response information of the downlink carrier;
  • the transmitted PDCCH signaling carries information of one downlink carrier set in a downlink carrier set that is pre-configured or pre-configured with the terminal, to indicate that the terminal should respond to all downlink carriers in the downlink carrier set.
  • the information is spatially combined; the downlink carrier in the downlink carrier set that is pre-configured or pre-configured with the terminal to perform spatial combining is the downlink carrier scheduled by the PDCCH signaling; or
  • the transmitted PDCCH signaling carries information of a downlink carrier set in a downlink carrier set that is not configured or pre-configured with the terminal in advance, to indicate that the terminal does not perform response information of all downlink carriers in the downlink carrier set.
  • Space merging; each downlink carrier in the downlink carrier set that is pre-configured or pre-configured with the terminal and not spatially combined is the downlink carrier scheduled by the PDCCH signaling.
  • the base station also includes:
  • the notification unit 72 is configured to: before the configuration unit 71 sends the configuration information to the terminal by using the PDCCH signaling, notify the terminal whether the configuration information delivered by the PDCCH signaling is valid by using the high layer signaling, or notify the terminal PDCCH by using the high layer signaling. Whether the configuration information is included in the signaling.
  • the determining unit 70 is configured to:
  • the determining unit 70 preferentially determines that the terminal needs to spatially combine the response information of the downlink secondary carrier and/or the downlink carrier that schedules less packets in the time domain.
  • the high layer signaling is: radio resource control RRC signaling or media access control MAC signaling.
  • an embodiment of the present invention further provides a terminal, where the terminal includes:
  • the receiving unit 80 is configured to receive configuration information that is sent by the base station to perform spatial combining on the response information of the downlink carrier.
  • a determining unit 81 configured to determine, by the terminal, whether to perform spatial combining on the response information of the downlink carrier according to the configuration information
  • the feedback unit 82 is configured to: when the determining unit determines to be YES, spatially combine the response information of the downlink carrier and feed back to the base station, and when the determining unit determines to be no, directly feed back the response information of the downlink carrier to the base station. .
  • the receiving unit 80 is configured to:
  • the determining unit 81 is specifically configured to: determine, according to the configuration information of each downlink carrier received by the high layer signaling, whether the response information of the downlink carrier is Performing spatial merging, where the configuration information of each downlink carrier is respectively received through independent high layer signaling; or
  • a downlink carrier set Determining, by the configuration information received by the high layer signaling, a downlink carrier set, where the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or pre-configured with the base station to perform spatial combining, and determining the downlink The acknowledgment information of each downlink carrier in the carrier set is spatially combined; or
  • a downlink carrier set Determining, according to the configuration information received by the high layer signaling, a downlink carrier set, where the downlink carrier set is Determining, by the base station, one of a plurality of downlink carrier sets that are not spatially combined with the base station, and determining that the response information of each downlink carrier in the downlink carrier set is not spatially combined;
  • the determining unit 81 is specifically configured to: determine, according to the configuration information carried in the PDCCH signaling, whether the downlink carrier response information is scheduled for the PDCCH signaling. Space consolidation; or,
  • a downlink carrier set Determining, according to the configuration information carried in the PDCCH signaling, a downlink carrier set, where the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or pre-configured with the base station for spatial combining, and determining the downlink The acknowledgment information of each downlink carrier in the carrier set is spatially combined; or
  • the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or agreed with the base station in advance and are not spatially combined, The response information of each downlink carrier in the downlink carrier set is not spatially combined.
  • the determining unit 81 is configured to:
  • the acknowledgment information of all downlink carriers scheduled by the PDCCH signaling is spatially combined or not spatially combined; or, according to the independent configuration information corresponding to each downlink carrier in the configuration information carried in the PDCCH signaling, respectively Performing spatial merging on the response information of the corresponding downlink carrier, where the configuration information carried in the PDCCH signaling includes independent configuration information of each downlink carrier of all downlink carriers scheduled for the PDCCH signaling; or
  • a downlink carrier set Determining, according to the configuration information carried in the PDCCH signaling, a downlink carrier set, where the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or pre-configured with the base station for spatial combining, and determining the downlink
  • the downlink information of each downlink carrier in the carrier set is spatially combined; the downlink carrier in the downlink carrier set that is pre-configured or pre-configured with the base station in advance is the downlink carrier scheduled by the PDCCH signaling; or
  • a downlink carrier set Determining, according to the configuration information carried in the PDCCH signaling, a downlink carrier set, where the downlink carrier set is one of a plurality of downlink carrier sets that are pre-configured by the base station or agreed with the base station in advance and are not spatially combined, The response information of each downlink carrier in the downlink carrier set is not spatially combined; each base station is pre-configured or pre-configured The downlink carrier in the downlink carrier set that is not spatially combined with the base station is the downlink carrier scheduled by the PDCCH signaling.
  • the terminal also includes:
  • the determining unit 83 is configured to: when the receiving unit 80 receives the configuration information by using the PDCCH signaling, before determining, by the determining unit 81, whether to perform spatial combining on the response information of the downlink carrier according to the configuration information, Deleting the notification, determining whether the configuration information delivered by the base station by using the PDCCH signaling is valid, or determining whether the configuration information is included in the PDCCH signaling sent by the base station;
  • the determining unit 81 is configured to:
  • the determining unit 83 determines that the configuration information delivered by the base station by using the PDCCH signaling is valid, or determines that the configuration information is included in the PDCCH signaling sent by the base station, determining whether to perform spatial combining of the response information of the downlink carrier according to the configuration information. .
  • the high layer signaling is: radio resource control RRC signaling or media access control MAC signaling.
  • the beneficial effects of the present invention include:
  • the base station sends configuration information to the terminal for spatially combining the response information of the downlink carrier, and the terminal determines, according to the received configuration information, whether to perform spatial combining on the response information of the downlink carrier, and if yes, The downlink carrier response information is spatially combined and fed back to the base station. Otherwise, the downlink carrier response information is directly fed back to the base station.
  • the base station can flexibly configure whether the terminal spatially combines the response information of the downlink carrier according to the requirement, and the terminal can determine whether to perform spatial combining of the response information of the downlink carrier according to the configuration of the base station, so that the terminal feeds back the ACK/
  • the number of NACK information bits is flexibly changed according to whether or not spatial combining is performed to adapt to different transmission schemes, thereby improving ACK/NACK transmission efficiency, avoiding unnecessary retransmissions, and thereby improving system performance.
  • the invention is applicable to both FDD and TDD systems.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Description

空间合并配置及应答信息反馈方法、 系统和设备 本申请要求在 2011年 03月 25日提交中国专利局、 申请号为 201110074398.X、 发明名称为
"空间合并配置及应答信息反馈方法、 系统和设备"的中国专利申请的优先权, 其全部内容通过 引用结合在本申请中。 技术领域 本发明涉及无线通信领域, 尤其涉及一种空间合并配置及应答信息反馈方法、 系统和 设备。 背景技术 对于长期演进升级系统(LTE-A, Long Term Evolution Advanced ), 为支持比长期演进
( LTE, Long Term Evolution ) 系统更宽的系统带宽, 比如 100MHz, —种可能是直接分配 100M带宽的频谱, 如图 1所示; 一种可能是将分配给现有系统的一些频谱聚合起来, 凑 成大带宽供给 LTE-A系统使用, 即载波聚合(CA, Carrier Aggregation ), 此时系统中上下 行载波可以不对称配置, 即用户可能会占用 N≥l个载波进行下行传输, M>1个载波进行上 行传输, 如图 2所示。
目前确定 LTE-A系统最多可支持 5个载波进行聚合, 一个 LTE-A时分双工 ( TDD, Time Division Duplex ) 系统中的终端 (UE, User Equipment ) 需要在同一个上行子帧内反 馈对应多 个下行载波及下行子帧的肯定应答 /否定应答 ( ACK/NACK , ACKnowledgment/Non- ACKnowledgment )信息。 对于 TDD系统, 需要在同一上行子帧进 行 ACK/NACK反馈的下行子帧数定义为 M, M对不同的上行子帧和不同的上下行配置取 值不同, 此外, 当不同的载波使用不同的上下行配置时, 不同载波在同一个上行子帧对应 的 M取值也可能不同, 如表 1所示, 每个上行子帧对应的 k值的个数即为 UE需要在该上 行子帧中进行 ACK/NACK反馈的下行子帧的个数。 UE在完成了对下行子帧 "- 上的数 据的解调、 译码后, 将在上行子帧 "上向基站反馈该下行子帧上的数据是否需要重传的信 息 (即 ACK/NACK )。 上 下 行配 置 ( UL-DL 子帧 n ( Subframe n )
Configuration ) 0 1 2 3 4 5 6 7 8 9
0 - - 6 - 4 - - 6 - 4
1 - - 7, 6 4 - - - 7, 6 4 - 8, 7, 4, 6 8, 7,
2 - 4, 6
7, 6, 11 6, 5 5,
3 - 4
12, 8, 7, 11 6, 5,
4 - 4, 7
13, 12, 9, 8, 7,
5 - 5, 4, 11, 6
6 - - 7 7 5 - - 7 7 - 表 1
LTE-A系统中釆用物理上行控制信道( PUCCH, Physical Uplink Control CHannel )格 式( format )3(筒称 PUCCH format 3 )和带有信道选择的物理上行控制信道格式 lb ( PUCCH format lb with channel selection )复用传输 ACK/NACK信息。 PUCCH format 3的最大传输 比特数为 20比特, PUCCH format lb with channel selection的最大传输比特数为 4比特, 当 需要反馈的 ACK/NACK信息比特数大于上述传输方案的最大传输比特时, 需要对釆用多 码字 (即 2 码字)传输模式的下行载波对应的 ACK/NACK信息进行空间合并(Spatial Bundling ) , 以降低 ACK/NACK信息的传输比特数。
所谓空间合并, 即对一个传输模式为多码字的下行载波的一个下行子帧中的多个码字 的 ACK/NACK信息进行逻辑与。 LTE版本 8 ( Rel-8 )系统中的 ACK/NACK复用传输, 在 多码字传输且 M>1时, 对多码字的 ACK/NACK信息默认进行空间合并。
在实现本发明的过程中, 发明人发现现有技术中存在以下技术问题:
由于 LTE-A系统中的 ACK/NACK反馈方案支持不同的 ACK/NACK反馈比特数传输, 如果沿用 LTE Rel-8复用方式, 对所有 M>1的多码字对应的 ACK/NACK信息始终进行空 间合并, 对于支持较大反馈比特数传输的方案, 会造成重传次数增大, 影响系统吞吐量。 发明内容 本发明实施例提供一种空间合并配置的方法和设备, 用于提供一种基站向终端灵活配 置是否对下行载波的应答信息进行空间合并的信息的方案。
一种空间合并配置方法, 该方法包括:
基站对每个下行载波, 确定是否需要终端对该下行载波的应答信息进行空间合并; 基站根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的配置信息。 一种基站, 该基站包括:
确定单元, 用于对每个下行载波, 确定是否需要终端对该下行载波的应答信息进行空 间合并;
配置单元, 用于根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的 配置信息。
釆用本方案, 基站可以根据需要灵活配置终端是否对下行载波的应答信息进行空间合 并。
本发明实施例还提供一种应答信息的反馈方法、 系统和设备 , 用于提供一种终端根据 基站的配置反馈应答信息的方案。
一种应答信息反馈方法, 该方法包括:
终端接收基站下发的是否对下行载波的应答信息进行空间合并的配置信息; 终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并, 若是, 则将下 行载波的应答信息进行空间合并后反馈给基站, 否则, 直接将下行载波的应答信息反馈给 基站。
一种终端, 该终端包括:
接收单元, 用于接收基站下发的是否对下行载波的应答信息进行空间合并的配置信 息;
确定单元, 用于终端根据所述配置信息确定是否对下行载波的应答信息进行空间合 并;
反馈单元, 用于在所述确定单元确定为是时, 将下行载波的应答信息进行空间合并后 反馈给基站, 在所述确定单元确定为否时, 直接将下行载波的应答信息反馈给基站。
一种无线通信系统, 该系统包括:
基站, 用于对每个下行载波, 确定是否需要终端对该下行载波的应答信息进行空间合 并; 根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的配置信息; 终端, 用于接收基站下发的是否对下行载波的应答信息进行空间合并的配置信息; 根 据所述配置信息确定是否对下行载波的应答信息进行空间合并, 若是, 则将下行载波的应 答信息进行空间合并后反馈给基站, 否则, 直接将下行载波的应答信息反馈给基站。
釆用本方案, 终端可以根据基站下发的配置信息确定是否对下行载波的应答信息进行 空间合并, 进而根据确定结果在反馈应答信息前对应答信息进行或不进行空间合并, 从而 实现了终端根据基站的配置反馈应答信息。 附图说明 图 1为现有技术中的单频谱系统示意图;
图 2为现有技术中的频谱聚合系统示意图; 图 3为本发明实施例提供的方法流程示意图;
图 4为本发明实施例提供的另一方法流程示意图;
图 5A为本发明实施例一中的空间合并示意图;
图 5B为本发明实施例二中的空间合并示意图;
图 6为本发明实施例提供的系统结构示意图;
图 7为本发明实施例提供的设备结构示意图;
图 8为本发明实施例提供的另一设备结构示意图。 具体实施方式 为了能够对终端是否对下行载波的应答信息进行空间合并进行灵活配置, 本发明实施 例提供一种空间合并配置方法, 本方法中, 基站根据实际情况向终端下发是否对下行载波 的应答信息进行空间合并的配置信息。
参见图 3 , 本发明实施例提供的空间合并配置方法, 包括以下步骤:
步骤 30: 基站对 UE配置或激活的一个或多个下行载波中的每个下行载波, 确定是否 需要终端对该下行载波的应答信息进行空间合并; 所述一个或多个下行载波可以是釆用多 码字传输模式的下行载波;
对下行载波的应答信息进行空间合并, 是指对该下行载波的同一下行子帧中的各码字 的 ACK/NACK信息进行逻辑与处理。
步骤 31 :基站根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的配 置信息。
步骤 31中, 基站可以通过高层信令或 PDCCH信令向终端下发所述配置信息。
具体的, 基站通过高层信令向终端下发所述配置信息的具体实现可以釆用如下四种方 式:
第一, 基站对所述一个或多个下行载波中的每个下行载波, 分别通过高层信令向终端 下发是否对该下行载波的应答信息进行空间合并的配置信息; 每个高层信令中可以携带 1 比特信息, 用于指示终端是否对相应的下行载波的应答信息进行空间合并, 该 1比特信息 具体指示对哪个下行载波的应答信息是否进行空间合并, 可以通过高层信令中携带的下行 载波标识来指确定, 当然, 也可以是确定传输该高层信令的下行载波, 则该 1比特信息指 示对该下行载波的应答信息是否进行空间合并。
第二, 基站根据确定结果从预先配置或预先与终端约定的进行空间合并的下行载波集 合中选取一个下行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示终端对该下行载波集合中的所有下行载波的应答信息进行空间合并; 例如, 基站确 定所述一个或多个下行载波中的、 需要终端进行空间合并的应答信息所对应的下行载波, 从预先配置或预先与终端约定的进行空间合并的一个或多个下行载波集合中选取仅包含 确定的下行载波的下行载波集合, 并通过高层信令向终端下发选取的下行载波集合的编号 信息, 以指示终端对该下行载波集合中的下行载波的应答信息进行空间合并, 其中高层信 令中承载配置信息的比特域为 K 比特, 用于指示选择的下行载波集合的编号信息, K = [\og2 N , N为预先配置或预先与终端约定的进行空间合并的下行载波集合的个数; 第三, 基站根据确定结果从预先配置或预先与终端约定的不进行空间合并的下行载波 集合中选取一个下行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终 端, 以指示终端不对该下行载波集合中的所有下行载波的应答信息进行空间合并; 例如, 基站确定所述一个或多个下行载波中的、 不需要终端进行空间合并的应答信息所对应的下 行载波, 从预先配置或预先与终端约定的进行空间合并的一个或多个下行载波集合中选取 仅包含确定的下行载波的下行载波集合, 并通过高层信令向终端下发选取的下行载波集合 的编号信息, 以指示终端不对该下行载波集合中的下行载波的应答信息进行空间合并, 其 中高层信令中承载配置信息的比特域为 K比特,用于指示选择的下行载波集合的编号信息, K = {\og2 N , N为预先配置或预先与终端约定的不进行空间合并的下行载波集合的个数; 第四, 基站通过高层信令向终端下发配置信息, 该配置信息中针对所述一个或多个下 行载波中的每个下行载波均携带有终端是否对该下行载波的应答信息进行空间合并的独 立的配置信息, 例如在有 5个下行载波时, 高层信令中可以携带 5比特信息, 每个比特信 息分别指示一个下行载波的应答信息是否需要进行空间合并。
基站通过 PDCCH信令向终端下发所述配置信息的具体实现可以釆用如下四种方式: 第一, 基站通过 PDCCH信令向终端下发是否对所述 PDCCH信令调度的下行载波的 应答信息进行空间合并的配置信息, 即基站对所述一个或多个下行载波中的每个下行载 波, 通过调度该下行载波的 PDCCH信令向终端下发是否对该下行载波的应答信息进行空 间合并的配置信息;
第二, 基站通过 PDCCH信令向终端下发是否对所述 PDCCH信令传输所在的下行载 波的应答信息进行空间合并的配置信息, 即基站对所述一个或多个下行载波中的每个下行 载波, 通过在该下行载波上传输的 PDCCH信令向终端下发是否对该下行载波的应答信息 进行空间合并的配置信息;
第三, 基站根据确定结果从预先配置或预先与终端约定的进行空间合并的下行载波集 合中选取一个下行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终 端, 以指示终端对该下行载波集合中的所有下行载波的应答信息进行空间合并。 例如, 基 站确定所述一个或多个下行载波中的、 需要终端进行空间合并的应答信息所对应的下行载 波, 从预先配置或预先与终端约定的进行空间合并的一个或多个下行载波集合中选取仅包 含确定的下行载波的下行载波集合, 并通过 PDCCH信令向终端下发选取的下行载波集合 的编号信息, 以指示终端对该下行载波集合中的下行载波的应答信息进行空间合并, 其中 PDCCH信令中承载配置信息的比特域为 K比特, 用于指示选择的下行载波集合的编号信 息, =「log2 N N 为预先配置或预先与终端约定的进行空间合并的下行载波集合的个 数;
第四, 基站根据确定结果从预先配置或预先与终端约定的不进行空间合并的下行载波 集合中选取一个下行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给 终端,以指示终端不对该下行载波集合中的所有下行载波的应答信息进行空间合并。例如, 基站确定所述一个或多个下行载波中的、 不需要终端进行空间合并的应答信息所对应的下 行载波, 从预先配置或预先与终端约定的不进行空间合并的一个或多个下行载波集合中选 取仅包含确定的下行载波的下行载波集合, 并通过 PDCCH信令向终端下发选取的下行载 波集合的编号信息, 以指示终端不对该下行载波集合中的下行载波的应答信息进行空间合 并, 其中 PDCCH信令中承载配置信息的比特域为 K比特, 用于指示选择的下行载波集合 的编号信息, =「log2 N N 为预先配置或预先与终端约定的进行空间合并的下行载波 集合的个数。
具体的, 在基站通过调度该下行载波的 PDCCH信令向终端下发是否对所述 PDCCH 信令调度的下行载波的应答信息进行空间合并的配置信息时, 可以包括如下四种情况: 第一, 基站发送的 PDCCH信令中携带 1比特用于指示空间合并的配置信息, 用于指 示终端对所述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空 间合并;
第二, 基站发送的 PDCCH信令中, 针对所述 PDCCH信令调度的所有下行载波中的 每个下行载波均携带有终端是否对该下行载波的应答信息进行空间合并的独立的配置信 息; 例如在 PDCCH信令调度 3个下行载波时, PDCCH信令中可以携带 3比特信息, 每个 比特信息分别指示一个下行载波的应答信息是否需要进行空间合并;
第三, 基站发送的 PDCCH信令中携带有预先配置或预先与终端约定的进行空间合并 的下行载波集合中的一个下行载波集合的信息, 以指示终端对该下行载波集合中的所有下 行载波的应答信息进行空间合并; 每个预先配置或预先与终端约定的进行空间合并的下行 载波集合中的下行载波为所述 PDCCH信令调度的下行载波。 例如, 基站发送的 PDCCH 信令中携带有下行载波集合的编号信息, 该下行载波集合是基站从预先配置或预先与终端 约定的进行空间合并的一个或多个下行载波集合中选取的仅包含该 PDCCH信令调度的、 并需要终端进行空间合并的应答信息所对应的下行载波的下行载波集合, 其中 PDCCH信 令中承载配置信息的比特域为 K 比特, 用于指示选择的下行载波集合的编号信息, K = [\og2 N , N为预先配置或预先与终端约定的进行空间合并的下行载波集合的个数; 第四, 基站发送的 PDCCH信令中携带有预先配置或预先与终端约定的不进行空间合 并的下行载波集合中的一个下行载波集合的信息, 以指示终端不对该下行载波集合中的所 有下行载波的应答信息进行空间合并; 每个预先配置或预先与终端约定的不进行空间合并 的下行载波集合中的下行载波为所述 PDCCH信令调度的下行载波。 例如, 基站发送的 PDCCH信令中携带有下行载波集合的编号信息, 该下行载波集合是基站从预先配置或预 先与终端约定的不进行空间合并的一个或多个下行载波集合中选取的仅包含该 PDCCH信 令调度的、 并不需要终端进行空间合并的应答信息所对应的下行载波的下行载波集合, 其 中 PDCCH信令中承载配置信息的比特域为 K比特, 用于指示选择的下行载波集合的编号 信息, =「log2 N N 为预先配置或预先与终端约定的进行空间合并的下行载波集合的 个数。
较佳的, 基站可以在通过 PDCCH信令, 向终端下发所述配置信息之前, 通过高层信 令通知终端该 PDCCH信令下发的配置信息是否有效,或者通过高层信令通知终端 PDCCH 信令中是否包含所述配置信息, 即通知终端是否支持釆用 PDCCH信令配置下行载波是否 对应答信息进行空间合并。
通过高层信令通知终端 PDCCH信令中是否包含所述配置信息时, 可以通知终端
PDCCH信令中是否包含用于承载所述配置信息的比特域,该比特域可以是 PDCCH中原有 的比特域的重用, 也可以是 PDCCH中新增的比特域。
步骤 30中的具体实现可以釆用如下方式:
当基站确定终端需要对一个或多个下行载波的应答信息进行空间合并时, 基站优先确 定需要终端对下行辅载波和 /或时域调度较少数据包的下行载波的应答信息进行空间合并。 例如:
基站确定需要使用同一上行子帧反馈应答信息的一个或多个下行载波, 确定终端在不 进行空间合并时在该上行子帧反馈应答信息的比特数是否大于最大传输比特数; 在确定为 是时, 从该一个或多个下行载波选取部分或全部下行载波, 并确定需要终端对选取的下行 载波的应答信息进行空间合并, 不需要终端对未被选取的下行载波的应答信息进行空间合 并, 以使终端在该上行子帧上反馈的应答信息的比特数不超过最大传输比特数; 在确定为 否时, 确定不需要终端对该一个或多个下行载波的应答信息进行空间合并。 上述基站在从 该一个或多个下行载波选取部分或全部下行载波时,优先选取下行辅载波和 /或时域调度较 少数据包的下行载波。
本发明实施例中,高层信令可以为:无线资源控制( RRC )信令或媒体接入控制( MAC ) 信令。 所述 PDCCH信令可以釆用下行控制信息格式(DCI Format ) 2/2A/2B/2C。
参见图 4, 本发明实施例还提供一种应答信息反馈方法, 包括以下步骤:
步骤 40: 终端接收基站下发的是否对下行载波的应答信息进行空间合并的配置信息; 步骤 41 :终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并,若是, 则将下行载波的应答信息进行空间合并后反馈给基站, 否则, 直接将下行载波的应答信息 反馈给基站。
步骤 40中, 终端可以通过高层信或令 PDCCH信令, 接收所述配置信息。
具体的, 在终端通过高层信令接收所述配置信息时, 步骤 41 中终端 # ^据所述配置信 息确定是否对下行载波的应答信息进行空间合并, 其具体实现可以釆用如下四种方式: 第一, 终端根据通过高层信令分别接收的每个下行载波的配置信息, 确定是否对该下 行载波的应答信息进行空间合并, 其中每个下行载波的配置信息分别通过独立的高层信令 接收;
第二, 终端根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行 载波集合为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一 个, 所述终端确定对所述下行载波集合中的各下行载波的应答信息进行空间合并;
第三, 终端根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行 载波集合为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的 一个, 所述终端确定对所述下行载波集合中的各下行载波的应答信息不进行空间合并; 第四, 终端根据通过高层信令接收的所述配置信息中对应每个下行载波的独立的配置 信息, 分别确定是否对相应的下行载波的应答信息进行空间合并, 其中终端通过高层信令 接收的配置信息中同时携带有针对多个下行载波中的每个下行载波的独立的配置信息。
在终端通过 PDCCH信令接收所述配置信息时,步骤 41中终端 居所述配置信息确定 是否对下行载波的应答信息进行空间合并, 其具体实现可以釆用如下四种方式:
第一, 终端根据所述 PDCCH信令中携带的配置信息, 确定是否对该 PDCCH信令所 调度的下行载波的应答信息进行空间合并;
第二, 终端根据所述 PDCCH信令中携带的配置信息, 确定是否对传输所述 PDCCH 信令的下行载波的应答信息进行空间合并;
第三, 终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下 行载波集合为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的 一个, 所述终端确定对所述下行载波集合中的各下行载波的应答信息进行空间合并;
第四, 终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下 行载波集合为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中 的一个, 所述终端确定对该下行载波集合中的各下行载波的应答信息不进行空间合并。
上述在终端根据所述 PDCCH信令中携带的配置信息, 确定是否对该 PDCCH信令所 调度的下行载波的应答信息进行空间合并时, 可以存在如下四种情况:
第一, 终端根据所述 PDCCH信令中携带的 1比特用于指示空间合并的配置信息, 确 定对所述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合 并;
第二, 终端根据所述 PDCCH信令中携带的的配置信息中对应每个下行载波的独立的 配置信息, 分别确定是否对相应的下行载波的应答信息进行空间合并, 其中所述 PDCCH 信令中携带的配置信息同时包含针对所 PDCCH信令调度的所有下行载波中的每个下行载 波的独立的配置信息;
第三, 终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下 行载波集合为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的 一个, 所述终端确定对所述下行载波集合中的各下行载波的应答信息进行空间合并; 每个 基站预先配置或预先与基站约定的进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令调度的下行载波;
第四, 终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下 行载波集合为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中 的一个, 所述终端确定对所述下行载波集合中的各下行载波的应答信息不进行空间合并; 每个基站预先配置或预先与基站约定的不进行空间合并的下行载波集合中的下行载波为 所述 PDCCH信令调度的下行载波。
较佳的, 若终端通过 PDCCH信令接收所述配置信息, 则在终端根据所述配置信息确 定是否对下行载波的应答信息进行空间合并之前, 终端可以根据基站通过高层信令下发的 通知,确定基站通过 PDCCH信令下发的配置信息是否有效,或者确定基站发送的 PDCCH 信令中是否包含所述配置信息; 若有效或包含所述配置信息, 则根据 PDCCH信令中的配 置信息确定是否对下行载波的应答信息进行空间合并; 若无效或不包含所述配置信息, 则 不根据 PDCCH信令中的配置信息确定是否对下行载波的应答信息进行空间合并。
本方法中, 所述高层信令可以为: RRC信令或 MAC信令。 所述 PDCCH信令可以 釆用下行控制信息格式(DCI Format ) 2/2A/2B/2C。
下面结合具体实施例对本发明进行说明:
对 LTE-A系统, UE在一个上行子帧复用传输 ACK/NACK时, 对于传输模式为多码 字传输模式的下行载波, 每个下行载波上多码字的 ACK/NACK信息是否进行空间合并可 配置, 具体的配置方法如下:
方法 1 :每个下行载波是否对多码字的 ACK/NACK反馈信息进行空间合并由高层信令 半静态配置。
高层信令可以为 RRC信令或 MAC层信令;
方法 1-1 : 高层信令可以对每个下行载波单独配置是否对多码字的 ACK/NACK反馈信 息进行空间合并; 每个下行载波的配置信息中的 1比特表示该下行载波是否对多码字的 ACK/NACK反 馈信息进行空间合并, 即该比特为 "1" 时, 表示该下行载波对多码字的 ACK/NACK反馈 信息进行空间合并, 为 "0" 时, 表示不进行, 上述对应关系反之也可;
方法 1-2: 高层信令通知 UE—个下行载波集合是否进行空间合并;
K比特高层信令可以通知 UE进行 ACK/NACK空间合并的下行载波集合, 或者通知
UE不进行 ACK/NACK空间合并的下行载波集合; 具体指示关系可以由基站和 UE预先约 定;
其中, =「1ο§ 2 ^ , A为高层信令预先配置的下行载波集合数;
上述下行载波集合为高层信令预先配置或者 UE与基站预先约定的多个下行载波集合 中的一个, 每个下行载波集合可以为空, 或者至少包括一个下行载波;
下行载波集合的配置可以基于载波编号进行配置;
方法 1-3: 高层信令对多个下行载波一起配置是否对多码字的 ACK/NACK反馈信息进 行空间合并;
K比特高层信令对 UE所有的配置 /激活下行载波同时配置是否进行 ACK/NACK空间 合并, 釆用 bitmap方式, K=N, N为 UE聚合或激活的下行载波数, 每个比特对应一个下 行载波, 该比特为 "Γ 时, 表示该下行载波对多码字的 ACK/NACK反馈信息进行空间合 并, 为 "0" 时, 表示不进行, 上述对应关系反之也可;
方法 2: 每个下行载波是否对多码字的 ACK/NACK反馈信息进行空间合并由 PDCCH 信令动态配置。
方法 2-1 : PDCCH中的 K( Κ>1 )比特指示该 PDCCH调度的下行载波是否对 ACK/NACK 反馈信息进行空间合并;
所述 K比特可以为 PDCCH中的原有比特域的重用, 也可以为 PDCCH中新增加的比 特域;
当一个 PDCCH在一个子帧中只调度一个下行载波时 (LTE-A Rel-10 系统), K=l , PDCCH中指示 ACK/NACK空间合并的 1比特为 "1" 时, 指示该下行载波对 ACK/NACK 反馈信息进行空间合并, 该比特为 "0" 时, 指示该下行载波对多码字的 ACK/NACK反馈 信息不进行空间合并, 上述对应关系反之也可;
当一个 PDCCH在一个子帧中可以调度多个下行载波时:
K=l比特,此时, PDCCH中指示 ACK/NACK空间合并的 1比特为 "1" ,指示该 PDCCH 调度的所有多码字传输模式的下行载波对 ACK/NACK反馈信息进行空间合并, 该比特为 "0" , 指示该 PDCCH调度的所有多码字传输模式的下行载波对 ACK/NACK反馈信息不 进行空间合并, 上述对应关系反之也可;
κ=「1ο§ 2 ^比特, Β 为高层信令预先配置的下行载波集合数, 所述下行载波集合可以 为空, 或者包括一个 PDCCH在一个子帧中可以同时调度的下行载波中的至少一个载波; 下行载波集合的配置可以基于载波编号进行配置;
K还可以为一个 PDCCH在一个子帧中可以同时调度的下行载波数,此时可釆用 bitmap 方式, K比特中的每个比特对应一个该 PDCCH可以同时调度的下行载波, 用该比特配置 该下行载波是否进行 ACK/NACK空间合并;
调度该下行载波上对应于同一个上行子帧进行 ACK/NACK反馈的下行子帧的多个 PDCCH中的 K比特指示域所指示的内容应一致;
如果不一致, UE 可认为是调度错误, 可进一步对该 PDCCH 配置的载波进行 ACK/NACK空间合并, 以避免反馈比特数超过传输容量;
或者按照预先约定规则在多个 PDCCH中选择一个, 例如选择第一个或者 DAI=1的或 者最后一个 PDCCH,根据其 K比特域的指示结果确定是否对该下行载波进行 ACK/NACK 空间合并; 当 ACK/NACK反馈比特总数超过传输容量时, UE可认为是调度错误, 可进一 步对所有多码字传输模式的下行载波的 ACK/NACK进行空间合并, 进而进行反馈;
方法 2-2: PDCCH中的 K比特(K=l )指示该 PDCCH传输所在的下行载波是否对 ACK/NACK反馈信息进行空间合并;
所述 K比特可以为 PDCCH中的原有比特域的重用, 也可以为 PDCCH中新增加的比 特域;
PDCCH中指示 ACK/NACK空间合并的 1比特为 "1" 时, 指示 PDCCH所在的下行 载波对 ACK/NACK 反馈信息进行空间合并, 该比特为 "0" 时, 指示该下行载波对 ACK/NACK反馈信息不进行空间合并, 上述对应关系反之也可;
在该下行载波上的对应于同一个上行子帧进行 ACK/NACK反馈的下行子帧中传输的 多个 PDCCH中的 K比特指示域所指示的内容应一致;
如果不一致, UE可认为是错误, 可进一步对该 PDCCH配置的载波进行 ACK/NACK 空间合并, 以避免反馈比特数超过传输容量; 或者,
按照预先约定规则在多个 PDCCH中选择一个, 例如选择第一个或者 DAI=1的或者最 后一个 PDCCH, 根据其 K比特域的指示结果确定是否对该下行载波进行 ACK/NACK空 间合并; 当 ACK/NACK反馈比特总数超过传输容量时, UE可认为是调度错误, 可进一步 对所有多码字传输模式的下行载波的 ACK/NACK进行空间合并, 进而进行反馈;
方法 2-3: PDCCH中的 K比特( K≥l )指示一个下行载波集合是否对 ACK/NACK反 馈信息进行空间合并;
所述 K比特可以为 PDCCH中的原有比特域的重用, 也可以为 PDCCH中新增加的比 特域; ^:^^2 ^ , A为高层信令预先配置的下行载波集合数;
PDCCH中的 K比特高层信令可以通知 UE进行 ACK/NACK空间合并的下行载波集 合, 或者通知 UE不进行 ACK/NACK空间合并的下行载波集合; 具体指示关系可以由基 站和 UE预先约定;
所述下行载波集合为高层信令预先配置或者 UE与基站预先约定的多个下行载波集合 中的一个, 可以为空, 也可以至少包括一个下行载波;
下行载波集合的配置可以基于载波编号进行配置;
对应于同一个上行子帧进行 ACK/NACK反馈的多个下行载波以及多个下行子帧中传 输的 PDCCH中的 K比特指示域所指示的内容应一致;
如果不一致, UE可认为是错误, 可进一步对该 PDCCH配置的载波进行 ACK/NACK 空间合并, 以避免反馈比特数超过传输容量; 或者,
按照预先约定规则在多个 PDCCH中选择一个, 例如选择第一个或者 DAI=1的或者最 后一个 PDCCH, 根据其 K比特域的指示结果确定进行 ACK/NACK空间合并的下行载波; 当 ACK/NACK反馈比特总数超过传输容量时, UE可认为是调度错误, 可进一步对所有多 码字传输模式的下行载波的 ACK/NACK进行空间合并, 进而进行反馈;
方法 2-4: 高层信令预先配置 UE是否支持釆用 PDCCH信令动态配置每个下行载波是 否对多码字的 ACK/NACK反馈信息进行空间合并;
高层信令可以为 RRC信令或 MAC层信令;
例如, 高层信令中的 1比特用来表示 UE是否支持釆用 PDCCH信令动态配置每个下 行载波是否进行 ACK/NACK空间合并, 该比特为 "1" 时表示支持, 该比特为 "0" 时表 示不支持, 或者反之也可;
当高层配置 UE可釆用 PDCCH信令动态配置每个下行载波的 ACK/NACK空间合并 时, PDCCH的通知方式如方法 2-1、 2-2、 2-3所示;
PDCCH中的用来指示每个下行载波是否进行 ACK/NACK空间合并的比特域只在高层 参数配置 UE支持釆用 PDCCH信令动态配置每个下行载波是否进行 ACK/NACK空间合并 时有效;
上述方法 2中釆用 PDCCH动态配置 ACK/NACK空间合并时, PDCCH主要釆用调度 下行多码字传输的 DCI format, 例如: DCI format 2/2A/2B/2C;
上述方法中每个下行载波的默认配置可以为不进行 ACK/NACK空间合, 也可以为进 行 ACK/NACK空间合并; 较优的, 当釆用 PDCCH信令动态配置每个下行载波是否进行
ACK/NACK空间合并时, 每个下行的默认配置为进行 ACK/NACK空间合并, 可以避免由 于配置下行载波是否进行空间合并的 PDCCH丢失时, ACK/NACK反馈比特数超过传输容 量。
上述方法在配置过程中, 基站应优先对下行辅载波配置进行 ACK/NACK空间合并, 即优先保证下行主载波不进行 ACK/NACK空间合并; 较优的, 当釆用 PDCCH动态配置时(即方法 2时), 基站应优先配置时域上调度下行 子帧数较少的下行载波进行空间合并, 即优先保证时域调度较多数据包的下行载波不进行 ACK/NACK空间合并, 以避免由于合并引起的不必要重传; 即在第一个进行调度的下行子 帧中, 基站可优先确定对不存在调度下行载波进行 ACK/NACK空间合并;
上述方法同样适用于 PUCCH和 PUSCH上的 ACK/NACK传输。
上述方法同样适用于 FDD系统和 TDD系统。
实施例一:
假设下行载波 1 为下行主载波, 图 5B 给出了 2 下行载波聚合时釆用方法 1 配置 ACK/NACK空间合并的实例。 此时, 每个下行载波的默认配置为不进行 ACK/NACK空间 合并。
基站端: 通过 RRC信令半静态配置每个下行载波的 ACK/NACK空间合并; 配置下行 载波 1不进行空间合并, 下行载波 2进行空间合并;
方法 1-1 : 对应下行载波 1的 1比特配置 ACK/NACK空间合并的 RRC信令置 "0" , 表示不进行 ACK/NACK空间合并,对应下行载波 2的 1比特配置 ACK/NACK空间合并的 RRC信令置 " 1" , 表示进行 ACK/NACK空间合并;
方法 1-2: RRC信令预先配置了 A=3个下行载波集合, 集合 1={下行载波 1 , 下行载 波 2} , 集合 2={下行载波 1 } , 集合 3={下行载波 2} , 因此需要 =lGg2 ^ = 2比特 RRC 信令, 每个集合与 RRC信令的对应关系如表 2所示; 基站通过 RRC信令向 UE发送载波 集合 3 , 配置只对下行载波 2进行 ACK/NACK空间合并, 即基站发送 2比特 RRC信令 " 1 0";
Figure imgf000015_0001
表 2
方法 1-3 :基站釆用 bitmap方式通过 1条 RRC信令向 UE通知其所有下行载波是否进 行 ACK/NACK空间合并的配置,下行载波数 N=2,即 K=N=2 ,基站向 UE发送 2比特 RRC 信令配置每个下行载波是否进行空间合并, 该信令中的第一比特对应下行载波 1是否进行 ACK/NACK空间合并, 第二比特对应下行载波 2是否进行 ACK/NACK空间合并, 即基站 发送 2比特 RRC信令 "0 1" , 0表示不进行空间合并, 1表示进行空间合并;
UE端:
方法 1-1 :接收对应每个下行载波的 RRC信令,下行载波 1的 RRC信令中 ACK/NACK 空间合并域为 "0" , UE确定对下行载波 1 不进行空间合并, 下行载波 2的 RRC信令中 ACK/NACK空间合并域为 "Γ , UE确定对下行载波 2进行空间合并, 如图 5A所示; 方法 1-2: 接收 RRC信令, 得到 RRC信令中 2比特进行 ACK/NACK空间合并的载波 集合配置信息 "1 0" , 根据表 2中的对应关系, UE确定该载波集合中只包括下行载波 2, 即只对下行载波 2进行空间合并, 如图 5A所示;
方法 1-3: 接收 RRC信令, 得到 RRC信令中 2比特进行 ACK/NACK空间合并的载波 集合配置信息 "0 1" , 按照 bitmap对应关系, 确定该载波集合中只包括下行载波 2, 即只 对下行载波 2进行空间合并, 如图 5A所示。
实施例二:
图 5B给出了 4下行载波聚合时釆用方法 2配置 ACK/NACK空间合并的实例。支持跨 载波调度, 下行主载波上的 PDCCH可以调度下行载波 2上的数据传输, 下行载波 1为下 行主载波, 其上的数据传输只能由下行载波 1上的 PDCCH进行调度, 下行载波 3和 4不 支持跨载波调度, 则下行载波 3上的数据传输由下行载波 3上的 PDCCH调度, 下行载波 4上的数据传输由下行载波 4上的 PDCCH调度; 此时, 每个下行载波的默认配置为进行 ACK/NACK空间合并。
基站端: 通过 PDCCH信令动态配置每个下行载波是否进行 ACK/NACK空间合并, 配置下行载波 1、 3不进行空间合并, 下行载波 2、 4进行空间合并;
方法 2-1 : 基站在下行载波 1 (下行主载波)上发送调度下行载波 1的 PDCCH, 并将 该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 "0" ,表示该 PDCCH调度的下行载 波 1不进行 ACK/NACK空间合并; 基站在下行载波 1 (下行主载波 )上发送调度下行载波 2的 PDCCH,并将该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 "Γ ,表示该 PDCCH 调度的下行载波 2进行 ACK/NACK空间合并; 基站在下行载波 3上发送调度下行载波 3 的 PDCCH,并将该 PDCCH中的 1比特 ACK/NACK空间合并指示域置" 0" ,表示该 PDCCH 调度的下行载波 3不进行 ACK/NACK空间合并;基站在下行载波 4上发送调度下行载波 4 的 PDCCH,并将该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 " Γ ,表示该 PDCCH 调度的下行载波 4进行 ACK/NACK空间合并;
方法 2-2: 基站在下行载波 1 (下行主载波)上发送调度下行载波 1的 PDCCH, 并将 该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 "0" ,表示传输该 PDCCH的下行载 波 1不进行 ACK/NACK空间合并; 基站在下行载波 1 (下行主载波 )上发送调度下行载波 2的 PDCCH, 并将该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 "0" , 表示传输 该 PDCCH的下行载波 1不进行 ACK/NACK空间合并; 基站在下行载波 3上发送调度下 行载波 3的 PDCCH, 并将该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 "0" , 表 示传输该 PDCCH的下行载波 3不进行 ACK/NACK空间合并; 基站在下行载波 4上发送 调度下行载波 4的 PDCCH,并将该 PDCCH中的 1比特 ACK/NACK空间合并指示域置 "1" , 表示传输该 PDCCH的下行载波 4进行 ACK/NACK空间合并;
方法 2-3 : RRC信令预先配置了 A=5个下行载波集合, 集合 1={下行载波 1 , 下行载 波 2, 下行载波 3 , 下行载波 4} , 集合 2={下行载波 1 , 下行载波 3 } , 集合 3={下行载波 2, 下行载波 4} , 集合 4={下行载波 1 , 下行载波 2} , 集合 5={下行载波 1 } , 因此需要 K =「lQg2 A^ = 3比特 RRC信令, 每个集合与 RRC信令的对应关系如表 3所示; 基站在下 行载波 1、 3、 4上发送的调度下行载波 1、 2、 3、 4的 PDCCH, 并将这些 PDCCH中的 3 比特设置为指示不进行 ACK/NACK空间合并的下行载波集合, 即设置为 "0 0 1" , 表示对 下行载波 1和 3不进行空间合并;
Figure imgf000017_0001
表 3
方法 2-4: 基站通过 RRC信令预先配置 UE支持釆用 PDCCH动态配置 ACK/NACK 空间合并, 即将该指示比特置 " 1" , 发送给 UE; 然后基站可按照上述方法 2-1、 2-2或 2-3 通过 PDCCH配置 UE的每个下行载波是否进行 ACK/NACK空间合并, 具体内容不赘述; UE端:
方法 2-1 : UE在下行载波 1 (下行主载波)上接收到调度下行载波 1的 PDCCH, 并 通过该 PDCCH中的 1比特 ACK/NACK空间合并指示域为 "0" ,确定对该 PDCCH调度的 下行载波 1不进行 ACK/NACK空间合并; UE在下行载波 1 (下行主载波 )上接收到调度 下行载波 2的 PDCCH, 通过该 PDCCH中的 1比特 ACK/NACK空间合并指示域为 " 1" , 确定对该 PDCCH调度的下行载波 2进行 ACK/NACK空间合并; UE在下行载波 3上接收 到调度下行载波 3的 PDCCH, 并通过该 PDCCH中的 1比特 ACK/NACK空间合并指示域 为 "0" , 确定对该 PDCCH调度的下行载波 3不进行 ACK/NACK空间合并; UE在下行载 波 4上接收到调度下行载波 4的 PDCCH, 并通过该 PDCCH中的 1比特 ACK/NACK空间 合并指示域为 " Γ , 确定对该 PDCCH调度的下行载波 4进行 ACK/NACK空间合并, 如 图 5B所示;
方法 2-2: UE在下行载波 1 (下行主载波)上接收到调度下行载波 1的 PDCCH, 并 通过该 PDCCH中的 1比特 ACK/NACK空间合并指示域为 "0" ,确定对传输该 PDCCH的 下行载波 1不进行 ACK/NACK空间合并; UE在下行载波 1 (下行主载波 )上接收到调度 下行载波 2的 PDCCH,并通过该 PDCCH中的 1比特 ACK/NACK空间合并指示域为 "0" , 确定对传输该 PDCCH的下行载波 1不进行 ACK/NACK空间合并; 由于下行载波 2通过 下行载波 1上的 PDCCH进行跨载波调度, UE在下行载波 2上没有接收到任何 PDCCH, 则无法获得对下行载波 2是否进行 ACK/NACK空间合并的动态配置信息, 因此 UE对下 行载波 2按照默认的 ACK/NACK空间合并属性进行操作,即默认为进行 ACK/NACK空间 合并; UE在下行载波 3上接收到调度下行载波 3的 PDCCH, 并通过该 PDCCH中的 1比 特 ACK/NACK 空间合并指示域为 "0" , 确定对传输该 PDCCH 的下行载波 3 不进行 ACK/NACK空间合并; UE在下行载波 4上接收到调度下行载波 4的 PDCCH, 并通过该 PDCCH中的 1比特 ACK/NACK空间合并指示域为 "1" , 确定对传输该 PDCCH的下行载 波 4进行 ACK/NACK空间合并, 如图 5B 所示;
方法 2-3: UE首先接收 RRC信令预先配置的 A=5个下行载波集合, 集合 1={下行载 波 1 , 下行载波 2, 下行载波 3 , 下行载波 4} , 集合 2={下行载波 1 , 下行载波 3} , 集合 3={下行载波 2, 下行载波 4} , 集合 4={下行载波 1 , 下行载波 2} , 集合 5={下行载波 1 }; UE在下行载波 1、 3、 4上接收调度下行载波 1、 2、 3、 4的 PDCCH, 并通过这些 PDCCH 中的指示不进行 ACK/NACK空间合并的下行载波集合的 3比特指示域为 "0 0 1" , 根据表 3的对应关系, 确定对下行载波 1和 3不进行空间合并, 如图 5B所示;
方法 2-4: UE首先接收配置 UE是否釆用 PDCCH动态配置 ACK/NACK空间合并的 RRC信令, 根据该 1比特 RRC信令为 "1" , 确定支持釆用 PDCCH动态配置空间合并, 即 PDCCH中存在指示 ACK/NACK空间合并的比特域, UE进一步按照上述方法 2-1、 2-2 或 2-3根据 PDCCH中的指示域获得 ACK/NACK空间合并的配置信息, 具体内容不赘述。
参见图 6, 本发明实施例还提供一种无线通信系统, 该系统包括:
基站 60, 用于对 UE配置或激活的一个或多个下行载波中的每个下行载波, 确定是否 需要终端对该下行载波的应答信息进行空间合并; 根据确定结果向终端下发是否对下行载 波的应答信息进行空间合并的配置信息;
终端 61 , 用于接收基站下发的是否对下行载波的应答信息进行空间合并的配置信息; 根据所述配置信息确定是否对下行载波的应答信息进行空间合并, 若是, 则将下行载波的 应答信息进行空间合并后反馈给基站, 否则, 直接将下行载波的应答信息反馈给基站。
参见图 7、 本发明实施例还提供一种基站, 该基站包括:
确定单元 70, 用于对 UE配置或激活的一个或多个下行载波中的每个下行载波, 确定 是否需要终端对该下行载波的应答信息进行空间合并;
配置单元 71 ,用于根据确定结果向终端下发是否对下行载波的应答信息进行空间合并 的配置信息。
所述配置单元 71用于:
通过高层信令, 向终端下发所述配置信息; 或者, 通过物理下行控制信道 PDCCH信 令, 向终端下发所述配置信息。
所述配置单元 71通过高层信令向终端下发所述配置信息, 具体包括:
对每个下行载波, 分别通过高层信令向终端下发是否对该下行载波的应答信息进行空 间合并的配置信息; 或者,
根据确定结果从预先配置或预先与终端约定的进行空间合并的下行载波集合中选取 一个下行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示终 端对该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
根据确定结果从预先配置或预先与终端约定的不进行空间合并的下行载波集合中选 取一个下行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示 终端不对该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
通过高层信令向终端下发配置信息, 该配置信息中针对多个下行载波中的每个下行载 波均携带有终端是否对该下行载波的应答信息进行空间合并的独立的配置信息。
所述配置单元 71通过 PDCCH信令, 向终端下发配置信息, 具体包括:
通过 PDCCH信令向终端下发是否对所述 PDCCH信令调度的下行载波的应答信息进 行空间合并的配置信息; 或者,
通过 PDCCH信令向终端下发是否对所述 PDCCH信令传输所在的下行载波的应答信 息进行空间合并的配置信息; 或者,
根据确定结果从预先配置或预先与终端约定的进行空间合并的下行载波集合中选取 一个下行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终端, 以指 示终端对该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
根据确定结果从预先配置或预先与终端约定的不进行空间合并的下行载波集合中选 取一个下行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终端, 以 指示终端不对该下行载波集合中的所有下行载波的应答信息进行空间合并。
所述配置单元 71用于:
通过 PDCCH信令向终端下发是否对所述 PDCCH信令调度的下行载波的应答信息进 行空间合并的配置信息时:
发送的 PDCCH信令中携带 1比特用于指示空间合并的配置信息, 用于指示终端对所 述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合并; 或 者,
发送的 PDCCH信令中, 针对所述 PDCCH信令调度的所有下行载波中的每个下行载 波均携带有终端是否对该下行载波的应答信息进行空间合并的配置信息; 或者,
发送的 PDCCH信令中携带有预先配置或预先与终端约定的进行空间合并的下行载波 集合中的一个下行载波集合的信息, 以指示终端对该下行载波集合中的所有下行载波的应 答信息进行空间合并; 每个预先配置或预先与终端约定的进行空间合并的下行载波集合中 的下行载波为所述 PDCCH信令调度的下行载波; 或者
发送的 PDCCH信令中携带有预先配置或预先与终端约定的不进行空间合并的下行载 波集合中的一个下行载波集合的信息, 以指示终端不对该下行载波集合中的所有下行载波 的应答信息进行空间合并; 每个预先配置或预先与终端约定的不进行空间合并的下行载波 集合中的下行载波为所述 PDCCH信令调度的下行载波。
该基站还包括:
通知单元 72 , 用于在配置单元 71通过 PDCCH信令, 向终端下发所述配置信息之前, 通过高层信令通知终端 PDCCH信令下发的配置信息是否有效, 或者通过高层信令通知终 端 PDCCH信令中是否包含所述配置信息。
所述确定单元 70用于:
当确定终端需要对一个或多个下行载波的应答信息进行空间合并时, 确定单元 70优 先确定需要终端对下行辅载波和 /或时域调度较少数据包的下行载波的应答信息进行空间 合并。
所述高层信令为: 无线资源控制 RRC信令或媒体接入控制 MAC信令。
参见图 8 , 本发明实施例还提供一种终端, 该终端包括:
接收单元 80 ,用于接收基站下发的是否对下行载波的应答信息进行空间合并的配置信 息;
确定单元 81 ,用于终端根据所述配置信息确定是否对下行载波的应答信息进行空间合 并;
反馈单元 82 , 用于在所述确定单元确定为是时, 将下行载波的应答信息进行空间合并 后反馈给基站, 在所述确定单元确定为否时, 直接将下行载波的应答信息反馈给基站。
所述接收单元 80用于:
通过高层信令, 接收所述配置信息; 或者, 通过物理下行控制信道 PDCCH信令, 接 收所述配置信息。
当接收单元 80通过高层信令, 接收所述配置信息时, 确定单元 81具体用于: 根据通过高层信令分别接收的每个下行载波的所述配置信息, 确定是否对该下行载波 的应答信息进行空间合并, 其中每个下行载波的所述配置信息分别通过独立的高层信令接 收; 或者,
根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行载波集合为 基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 确定对所 述下行载波集合中的各下行载波的应答信息进行空间合并; 或者,
根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行载波集合为 基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 确定对 所述下行载波集合中的各下行载波的应答信息不进行空间合并; 或者,
根据通过高层信令接收的所述配置信息中对应每个下行载波的独立的配置信息, 分别 确定是否对相应的下行载波的应答信息进行空间合并, 其中通过高层信令接收的所述配置 信息中同时携带有针对多个下行载波中的每个下行载波的独立的配置信息。
当接收单元 80通过 PDCCH信令, 接收所述配置信息时, 确定单元 81具体用于: 根据所述 PDCCH信令中携带的配置信息, 确定是否对该 PDCCH信令所调度的下行 载波的应答信息进行空间合并; 或者,
根据所述 PDCCH信令中携带的配置信息, 确定是否对传输所述 PDCCH信令的下行 载波的应答信息进行空间合并; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 确定对 所述下行载波集合中的各下行载波的应答信息进行空间合并; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 确定 对所述下行载波集合中的各下行载波的应答信息不进行空间合并。
所述确定单元 81用于:
在根据所述 PDCCH信令中携带的配置信息, 确定是否对该 PDCCH信令所调度的下 行载波的应答信息进行空间合并时:
根据所述 PDCCH信令中携带的 1 比特用于指示空间合并的配置信息, 确定对所述
PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合并; 或者, 根据所述 PDCCH信令中携带的配置信息中对应每个下行载波的独立的配置信息, 分 别确定是否对相应的下行载波的应答信息进行空间合并, 其中所述 PDCCH信令中携带的 配置信息同时包含针对所 PDCCH信令调度的所有下行载波中的每个下行载波的独立的配 置信息; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 确定对 所述下行载波集合中的各下行载波的应答信息进行空间合并; 每个基站预先配置或预先与 基站约定的进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令调度的下行载 波; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 确定 对所述下行载波集合中的各下行载波的应答信息不进行空间合并; 每个基站预先配置或预 先与基站约定的不进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令调度的 下行载波。
该终端还包括:
判定单元 83 , 用于在接收单元 80通过 PDCCH信令接收所述配置信息时, 在所述确 定单元 81 根据所述配置信息确定是否对下行载波的应答信息进行空间合并之前, 根据基 站通过高层信令下发的通知, 确定基站通过 PDCCH信令下发的配置信息是否有效, 或者 确定基站发送的 PDCCH信令中是否包含所述配置信息;
所述确定单元 81用于:
在判定单元 83判定基站通过 PDCCH信令下发的配置信息有效时, 或者确定基站发 送的 PDCCH信令中包含所述配置信息时, 根据所述配置信息确定是否对下行载波的应答 信息进行空间合并。
所述高层信令为: 无线资源控制 RRC信令或媒体接入控制 MAC信令。
综上, 本发明的有益效果包括:
本发明实施例提供的方案中, 基站向终端下发是否对下行载波的应答信息进行空间合 并的配置信息, 终端根据接收到的配置信息确定是否对下行载波的应答信息进行空间合 并, 若是, 则将下行载波的应答信息进行空间合并后反馈给基站, 否则, 直接将下行载波 的应答信息反馈给基站。 可见, 釆用本发明, 基站能够根据需要灵活配置终端是否对下行 载波的应答信息进行空间合并, 终端则可以根据基站的配置确定是否对下行载波的应答信 息进行空间合并, 使得终端反馈的 ACK/NACK信息比特数根据是否进行空间合并而灵活 变化, 以适应不同的传输方案, 从而提高 ACK/NACK传输效率, 避免不必要的重传, 进 而提高系统性能。 本发明对 FDD和 TDD系统都适用。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或计算机程序产 品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实 施例的形式。 而且, 本发明可釆用在一个或多个其中包含有计算机可用程序代码的计算机 可用存储介盾 (包括但不限于磁盘存储器、 CD-ROM、 光学存储器等)上实施的计算机程 序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。 这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实 施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变型属于本发明权利要求及其 等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种空间合并配置方法, 其特征在于, 该方法包括:
基站对每个下行载波, 确定是否需要终端对该下行载波的应答信息进行空间合并; 基站根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的配置信息。
2、 如权利要求 1 所述的方法, 其特征在于, 所述基站根据确定结果向终端下发是否 对下行载波的应答信息进行空间合并的配置信息, 具体为:
基站通过高层信令, 向终端下发所述配置信息; 或者,
基站通过物理下行控制信道 PDCCH信令, 向终端下发所述配置信息。
3、 如权利要求 2 所述的方法, 其特征在于, 所述基站通过高层信令, 向终端下发所 述配置信息包括:
基站对每个下行载波, 分别通过高层信令向终端下发是否对该下行载波的应答信息进 行空间合并的配置信息; 或者,
基站从预先配置或预先与终端约定的进行空间合并的多个下行载波集合中选取一个 下行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示终端对 该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
基站从预先配置或预先与终端约定的不进行空间合并的多个下行载波集合中选取一 个下行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示终端 不对该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
基站通过高层信令向终端下发所述配置信息, 所述配置信息中针对多个下行载波中的 每个下行载波均携带有终端是否对该下行载波的应答信息进行空间合并的独立的配置信 息。
4、 如权利要求 2所述的方法, 其特征在于, 所述基站通过 PDCCH信令, 向终端下发 所述配置信息包括:
基站通过 PDCCH信令向终端下发是否对所述 PDCCH信令调度的下行载波的应答信 息进行空间合并的配置信息; 或者,
基站通过 PDCCH信令向终端下发是否对所述 PDCCH信令传输所在的下行载波的应 答信息进行空间合并的配置信息; 或者,
基站从预先配置或预先与终端约定的进行空间合并的多个下行载波集合中选取一个 下行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终端, 以指示终 端对该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
基站从预先配置或预先与终端约定的不进行空间合并的多个下行载波集合中选取一 个下行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终端, 以指示 终端不对该下行载波集合中的所有下行载波的应答信息进行空间合并。
5、 如权利要求 4所述的方法, 其特征在于, 在基站通过 PDCCH信令向终端下发是否 对所述 PDCCH信令调度的下行载波的应答信息进行空间合并的配置信息时:
基站发送的 PDCCH信令中携带 1比特用于指示空间合并的配置信息, 用于指示终端 对所述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合 并; 或者,
基站发送的 PDCCH信令中, 针对所述 PDCCH信令调度的所有下行载波中的每个下 行载波均携带有终端是否对该下行载波的应答信息进行空间合并的独立的配置信息; 或 者,
基站发送的 PDCCH信令中携带有预先配置或预先与终端约定的进行空间合并的下行 载波集合中的一个下行载波集合的信息, 以指示终端对该下行载波集合中的所有下行载波 的应答信息进行空间合并; 每个预先配置或预先与终端约定的进行空间合并的下行载波集 合中的下行载波为所述 PDCCH信令调度的下行载波; 或者,
基站发送的 PDCCH信令中携带有预先配置或预先与终端约定的不进行空间合并的下 行载波集合中的一个下行载波集合的信息, 以指示终端不对该下行载波集合中的所有下行 载波的应答信息进行空间合并; 每个预先配置或预先与终端约定的不进行空间合并的下行 载波集合中的下行载波为所述 PDCCH信令调度的下行载波。
6、 如权利要求 4所述的方法, 其特征在于, 该方法进一步包括:
基站在通过 PDCCH信令, 向终端下发所述配置信息之前, 通过高层信令通知终端所 述 PDCCH信令下发的所述配置信息是否有效, 或者通过高层信令通知终端 PDCCH信令 中是否包含所述配置信息。
7、 如权利要求 1-5中任一所述的方法, 其特征在于, 所述基站对每个下行载波, 确定 是否需要终端对该下行载波的应答信息进行空间合并包括:
当基站确定终端需要对一个或多个下行载波的应答信息进行空间合并时, 基站优先确 定需要终端对下行辅载波和 /或时域调度较少数据包的下行载波的应答信息进行空间合并。
8、 如权利要求 2-6中任一所述的方法, 其特征在于, 所述高层信令为:
无线资源控制 RRC信令或媒体接入控制 MAC信令。
9、 一种应答信息反馈方法, 其特征在于, 该方法包括:
终端接收基站下发的是否对下行载波的应答信息进行空间合并的配置信息; 终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并, 若是, 则将下 行载波的应答信息进行空间合并后反馈给基站, 否则, 直接将下行载波的应答信息反馈给 基站。
10、 如权利要求 9所述的方法, 其特征在于, 终端接收基站下发的是否对下行载波的 应答信息进行空间合并的配置信息, 具体为:
终端通过高层信令, 接收所述配置信息; 或者,
终端通过物理下行控制信道 PDCCH信令, 接收所述配置信息。
11、如权利要求 10所述的方法, 其特征在于, 在终端通过高层信令接收所述配置信息 时, 所述终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并包括: 终端根据通过高层信令分别接收的每个下行载波的所述配置信息, 确定是否对该下行 载波的应答信息进行空间合并, 其中每个下行载波的所述配置信息分别通过独立的高层信 令接收; 或者,
终端根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行载波集 合为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 所述 终端确定对所述下行载波集合中的各下行载波的应答信息进行空间合并; 或者,
终端根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行载波集 合为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 所 述终端确定对所述下行载波集合中的各下行载波的应答信息不进行空间合并; 或者, 终端根据通过高层信令接收的所述配置信息中对应每个下行载波的独立的配置信息, 分别确定是否对相应的下行载波的应答信息进行空间合并, 其中终端通过高层信令接收的 所述配置信息中同时携带有针对多个下行载波中的每个下行载波的独立的配置信息。
12、 如权利要求 10所述的方法, 其特征在于, 在终端通过 PDCCH信令接收所述配置 信息时, 所述终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并包括: 终端根据所述 PDCCH信令中携带的配置信息, 确定是否对所述 PDCCH信令所调度 的下行载波的应答信息进行空间合并; 或者,
终端根据所述 PDCCH信令中携带的配置信息, 确定是否对传输所述 PDCCH信令的 下行载波的应答信息进行空间合并; 或者,
终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波 集合为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 所 述终端确定对所述下行载波集合中的各下行载波的应答信息进行空间合并; 或者,
终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波 集合为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 所述终端确定对该下行载波集合中的各下行载波的应答信息不进行空间合并。
13、 如权利要求 12所述的方法, 其特征在于, 在终端根据所述 PDCCH信令中携带的 配置信息, 确定是否对所述 PDCCH信令所调度的下行载波的应答信息进行空间合并时: 终端根据所述 PDCCH信令中携带的 1比特用于指示空间合并的配置信息, 确定对所 述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合并; 或 者,
终端根据所述 PDCCH信令中携带的的配置信息中对应每个下行载波的独立的配置信 息, 分别确定是否对相应的下行载波的应答信息进行空间合并, 其中所述 PDCCH信令中 携带的配置信息同时包含针对所 PDCCH信令调度的所有下行载波中的每个下行载波的独 立的配置信息; 或者,
终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波 集合为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 所 述终端确定对所述下行载波集合中的各下行载波的应答信息进行空间合并; 每个基站预先 配置或预先与基站约定的进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令 调度的下行载波; 或者,
终端根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波 集合为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 所述终端确定对所述下行载波集合中的各下行载波的应答信息不进行空间合并; 每个基站 预先配置或预先与基站约定的不进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令调度的下行载波。
14、 如权利要求 12所述的方法, 其特征在于, 若终端通过 PDCCH信令接收所述配置 信息, 则在终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并之前, 该 方法进一步包括:
终端接收基站通过高层信令下发的通知, 并根据该通知确定基站通过 PDCCH信令下 发的配置信息是否有效, 或者确定基站发送的 PDCCH信令中是否包含所述配置信息; 所述终端根据所述配置信息确定是否对下行载波的应答信息进行空间合并包括: 终端在确定基站通过 PDCCH信令下发的配置信息有效时, 或者终端在确定基站发送 的 PDCCH信令中包含所述配置信息时, 根据所述配置信息确定是否对下行载波的应答信 息进行空间合并。
15、 如权利要求 10-14中任一所述的方法, 其特征在于, 所述高层信令为: 无线资源控制 RRC信令或媒体接入控制 MAC信令。
16、 一种基站, 其特征在于, 该基站包括:
确定单元, 用于对每个下行载波, 确定是否需要终端对该下行载波的应答信息进行空 间合并;
配置单元, 用于根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的 配置信息。
17、 如权利要求 16所述的基站, 其特征在于, 所述配置单元具体用于:
通过高层信令, 向终端下发所述配置信息; 或者, 通过物理下行控制信道 PDCCH信令, 向终端下发所述配置信息。
18、 如权利要求 17 所述的基站, 其特征在于, 所述配置单元通过高层信令向终端下 发所述配置信息, 具体包括: 对每个下行载波, 分别通过高层信令向终端下发是否对该下 行载波的应答信息进行空间合并的配置信息; 或者,
从预先配置或预先与终端约定的进行空间合并的多个下行载波集合中选取一个下行 载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示终端对该下 行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
从预先配置或预先与终端约定的不进行空间合并的多个下行载波集合中选取一个下 行载波集合, 并通过高层信令将选取的下行载波集合的信息发送给终端, 以指示终端不对 该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
通过高层信令向终端下发所述配置信息, 所述配置信息中针对多个下行载波中的每个 下行载波均携带有终端是否对该下行载波的应答信息进行空间合并的独立的配置信息。
19、 如权利要求 17所述的基站, 其特征在于, 所述配置单元通过 PDCCH信令, 向终 端下发所述配置信息, 具体包括:
通过 PDCCH信令向终端下发是否对所述 PDCCH信令调度的下行载波的应答信息进 行空间合并的配置信息; 或者,
通过 PDCCH信令向终端下发是否对所述 PDCCH信令传输所在的下行载波的应答信 息进行空间合并的配置信息; 或者,
从预先配置或预先与终端约定的进行空间合并的多个下行载波集合中选取一个下行 载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终端, 以指示终端对 该下行载波集合中的所有下行载波的应答信息进行空间合并; 或者,
从预先配置或预先与终端约定的不进行空间合并的多个下行载波集合中选取一个下 行载波集合, 并通过 PDCCH信令将选取的下行载波集合的信息发送给终端, 以指示终端 不对该下行载波集合中的所有下行载波的应答信息进行空间合并。
20、 如权利要求 19所述的基站, 其特征在于, 所述配置单元用于:
通过 PDCCH信令向终端下发是否对所述 PDCCH信令调度的下行载波的应答信息进 行空间合并的配置信息时:
发送的 PDCCH信令中携带 1比特用于指示空间合并的配置信息, 用于指示终端对所 述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合并; 或 者,
发送的 PDCCH信令中, 针对所述 PDCCH信令调度的所有下行载波中的每个下行载 波均携带有终端是否对该下行载波的应答信息进行空间合并的独立的配置信息; 或者, 发送的 PDCCH信令中携带有预先配置或预先与终端约定的进行空间合并的下行载波 集合中的一个下行载波集合的信息, 以指示终端对该下行载波集合中的所有下行载波的应 答信息进行空间合并; 每个预先配置或预先与终端约定的进行空间合并的下行载波集合中 的下行载波为所述 PDCCH信令调度的下行载波; 或者
发送的 PDCCH信令中携带有预先配置或预先与终端约定的不进行空间合并的下行载 波集合中的一个下行载波集合的信息, 以指示终端不对该下行载波集合中的所有下行载波 的应答信息进行空间合并; 每个预先配置或预先与终端约定的不进行空间合并的下行载波 集合中的下行载波为所述 PDCCH信令调度的下行载波。
21、 如权利要求 19所述的基站, 其特征在于, 该基站还包括:
通知单元, 用于在所述配置单元通过 PDCCH信令, 向终端下发所述配置信息之前, 通过高层信令通知终端所述 PDCCH信令下发的配置信息是否有效, 或者通过高层信令通 知终端 PDCCH信令中是否包含所述配置信息。
22、 如权利要求 16-20中任一所述的基站, 其特征在于, 所述确定单元, 用于: 当确定终端需要对一个或多个下行载波的应答信息进行空间合并时, 所述确定单元优 先确定需要终端对下行辅载波和 /或时域调度较少数据包的下行载波的应答信息进行空间 合并。
23、 如权利要求 17-21中任一所述的基站, 其特征在于, 所述高层信令为: 无线资源控制 RRC信令或媒体接入控制 MAC信令。
24、 一种终端, 其特征在于, 该终端包括:
接收单元, 用于接收基站下发的是否对下行载波的应答信息进行空间合并的配置信 息;
确定单元, 用于根据所述配置信息确定是否对下行载波的应答信息进行空间合并; 反馈单元, 用于在所述确定单元确定为是时, 将下行载波的应答信息进行空间合并后 反馈给基站, 在所述确定单元确定为否时, 直接将下行载波的应答信息反馈给基站。
25、 如权利要求 24所述的终端, 其特征在于, 所述接收单元具体用于:
通过高层信令, 接收所述配置信息; 或者,
通过物理下行控制信道 PDCCH信令, 接收所述配置信息。
26、 如权利要求 25 所述的终端, 其特征在于, 当所述接收单元通过高层信令, 接收 所述配置信息时, 所述确定单元具体用于:
根据通过高层信令分别接收的每个下行载波的所述配置信息, 确定是否对该下行载波 的应答信息进行空间合并, 其中每个下行载波的所述配置信息分别通过独立的高层信令接 收; 或者,
根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行载波集合为 基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 确定对所 述下行载波集合中的各下行载波的应答信息进行空间合并; 或者,
根据通过高层信令接收的所述配置信息确定一个下行载波集合, 所述下行载波集合为 基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 确定对 所述下行载波集合中的各下行载波的应答信息不进行空间合并; 或者,
根据通过高层信令接收的所述配置信息中对应每个下行载波的独立的配置信息, 分别 确定是否对相应的下行载波的应答信息进行空间合并, 其中通过高层信令接收的所述配置 信息中同时携带有针对多个下行载波中的每个下行载波的独立的配置信息。
27、 如权利要求 25所述的终端, 其特征在于, 当所述接收单元通过 PDCCH信令, 接 收所述配置信息时, 所述确定单元具体用于:
根据所述 PDCCH信令中携带的配置信息, 确定是否对所述 PDCCH信令所调度的下 行载波的应答信息进行空间合并; 或者,
根据所述 PDCCH信令中携带的配置信息, 确定是否对传输所述 PDCCH信令的下行 载波的应答信息进行空间合并; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 确定对 所述下行载波集合中的各下行载波的应答信息进行空间合并; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 确定 对所述下行载波集合中的各下行载波的应答信息不进行空间合并。
28、 如权利要求 27所述的终端, 其特征在于, 所述确定单元用于:
在根据所述 PDCCH信令中携带的配置信息, 确定是否对所述 PDCCH信令所调度的 下行载波的应答信息进行空间合并时:
根据所述 PDCCH信令中携带的 1 比特用于指示空间合并的配置信息, 确定对所述 PDCCH信令调度的所有下行载波的应答信息均进行空间合并或均不进行空间合并; 或者, 根据所述 PDCCH信令中携带的配置信息中对应每个下行载波的独立的配置信息, 分 别确定是否对相应的下行载波的应答信息进行空间合并, 其中所述 PDCCH信令中携带的 配置信息同时包含针对所 PDCCH信令调度的所有下行载波中的每个下行载波的独立的配 置信息; 或者,
根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的进行空间合并的多个下行载波集合中的一个, 确定对 所述下行载波集合中的各下行载波的应答信息进行空间合并; 每个基站预先配置或预先与 基站约定的进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令调度的下行载 波; 或者, 根据所述 PDCCH信令中携带的配置信息确定一个下行载波集合, 所述下行载波集合 为基站预先配置或预先与基站约定的不进行空间合并的多个下行载波集合中的一个, 确定 对所述下行载波集合中的各下行载波的应答信息不进行空间合并; 每个基站预先配置或预 先与基站约定的不进行空间合并的下行载波集合中的下行载波为所述 PDCCH信令调度的 下行载波。
29、 如权利要求 27所述的终端, 其特征在于, 该终端还包括:
判定单元, 用于当所述接收单元通过 PDCCH信令接收所述配置信息时, 在所述确定 单元根据所述配置信息确定是否对下行载波的应答信息进行空间合并之前, 根据基站通过 高层信令下发的通知, 确定基站通过 PDCCH信令下发的配置信息是否有效, 或者确定基 站发送的 PDCCH信令中是否包含所述配置信息;
所述确定单元用于:
在所述判定单元判定基站通过 PDCCH信令下发的配置信息有效时, 或者确定基站发 送的 PDCCH信令中包含所述配置信息时, 根据所述配置信息确定是否对下行载波的应答 信息进行空间合并。
30、 如权利要求 25-29中任一所述的终端, 其特征在于, 所述高层信令为: 无线资源控制 RRC信令或媒体接入控制 MAC信令。
31、 一种无线通信系统, 其特征在于, 该系统包括:
基站, 用于对每个下行载波, 确定是否需要终端对该下行载波的应答信息进行空间合 并; 根据确定结果向终端下发是否对下行载波的应答信息进行空间合并的配置信息; 终端, 用于接收基站下发的是否对下行载波的应答信息进行空间合并的配置信息; 根 据所述配置信息确定是否对下行载波的应答信息进行空间合并, 若是, 则将下行载波的应 答信息进行空间合并后反馈给基站, 否则, 直接将下行载波的应答信息反馈给基站。
PCT/CN2012/072945 2011-03-25 2012-03-23 空间合并配置及应答信息反馈方法、系统和设备 Ceased WO2012130105A1 (zh)

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