WO2021204217A1 - Procédé, dispositif et système d'indication d'un indice de précodage - Google Patents

Procédé, dispositif et système d'indication d'un indice de précodage Download PDF

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Publication number
WO2021204217A1
WO2021204217A1 PCT/CN2021/086019 CN2021086019W WO2021204217A1 WO 2021204217 A1 WO2021204217 A1 WO 2021204217A1 CN 2021086019 W CN2021086019 W CN 2021086019W WO 2021204217 A1 WO2021204217 A1 WO 2021204217A1
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WIPO (PCT)
Prior art keywords
indication
precoding
terminal device
indication information
receiving point
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PCT/CN2021/086019
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English (en)
Chinese (zh)
Inventor
塔玛拉卡拉盖施
刘昊
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维沃移动通信有限公司
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Publication of WO2021204217A1 publication Critical patent/WO2021204217A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Definitions

  • the embodiments of the present invention relate to the field of communication technologies, and in particular, to a method, device, and system for indicating a precoding index.
  • the base station can notify the terminal device of the uplink precoding index (transmit precoding matrix indicator, TPMI) used when sending uplink data through downlink control information (DCI).
  • TPMI precoding matrix indicator
  • the two-antenna precoding index method has the following provisions: the first method is that the field used to indicate TPMI in DCI is 2 bits; the second method is that the field used to indicate TPMI in DCI It is 4 bits.
  • a terminal device can send uplink data to multiple reception points.
  • the base station may notify the terminal device of the precoding indexes corresponding to the multiple receiving points. For example, when a multipoint system includes 2 receiving points, if the base station uses the second method described above to notify the terminal equipment of the precoding indexes corresponding to the multiple receiving points, 8 bits of the DCI will be occupied to indicate and 2 TPMI corresponding to the receiving point. Therefore, for a multipoint system, the traditional way of indicating the precoding index will lead to a large signaling overhead.
  • the embodiments of the present invention provide a precoding index indicating method, device, and system, which can solve the problem of large signaling overhead caused by the traditional way of indicating the precoding index.
  • an embodiment of the present invention provides a precoding index indication method.
  • the method includes sending indication information to a terminal device, the indication information includes M indication fields, each indication field indicates at least two precoding indexes, each precoding index corresponds to a receiving point, and each precoding index is used for
  • the terminal device sends uplink data to the corresponding receiving point, and M is a positive integer.
  • the embodiment of the present invention provides a precoding index indication method.
  • the method includes: sending N indication information to a terminal device, each indication information includes an indication field, the indication fields in the N indication information collectively indicate at least two precoding indexes, and each precoding index corresponds to a receiving point, And each precoding index is used by the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • the embodiment of the present invention provides a precoding index indication method.
  • the method includes: receiving indication information sent by a network device; determining that the indication information includes M indication domains and at least two precoding indexes indicated by each indication domain, each precoding index corresponds to a receiving point, and each precoding The index is used by the terminal device to send uplink data to the corresponding receiving point, and M is a positive integer.
  • an embodiment of the present invention provides a precoding index indication method.
  • the method includes: receiving N pieces of indication information sent by a network device; determining that each piece of indication information includes an indication field and at least two precoding indexes jointly indicated by indication fields in the N pieces of indication information, and each precoding index corresponds to one Receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • an embodiment of the present invention provides a network device.
  • the network device includes a sending module.
  • the sending module is used to send indication information to the terminal device, the indication information includes M indication fields, each indication field indicates at least two precoding indexes, each precoding index corresponds to a receiving point, and each precoding index is used for When the terminal device sends uplink data to the corresponding receiving point, M is a positive integer.
  • an embodiment of the present invention provides a network device.
  • the network device includes a sending module.
  • the sending module is used to send N indication information to the terminal device, each indication information includes an indication field, and the indication fields in the N indication information collectively indicate at least two precoding indexes, and each precoding index corresponds to a receiving point , And each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • an embodiment of the present invention provides a terminal device.
  • the terminal device includes a receiving module and a determining module.
  • the receiving module is used to receive the instruction information sent by the network device.
  • the determining module is configured to determine that the indication information includes M indication fields and at least two precoding indexes indicated by each indication field, each precoding index corresponds to a receiving point, and each precoding index is used by the terminal device to correspond to The receiving point sends uplink data, and M is a positive integer.
  • an embodiment of the present invention provides a terminal device.
  • the terminal device includes a receiving module and a determining module.
  • the receiving module is used to receive N indication information sent by the network device; the determining module is used to determine that each indication information includes an indication field and at least two precoding indexes indicated by the indication fields in the N indication information, each Each precoding index corresponds to one receiving point, and each precoding index is used by the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • an embodiment of the present invention provides a network device, including a processor, a memory, and a computer program stored in the memory and running on the processor, and the computer program is executed by the processor to implement the above-mentioned first The steps of the precoding index indication method provided in one aspect or the second aspect.
  • an embodiment of the present invention provides a terminal device, including a processor, a memory, and a computer program stored on the memory and running on the processor.
  • the computer program is executed by the processor to implement the above-mentioned first The steps of the precoding index indication method provided by the third aspect or the fourth aspect.
  • an embodiment of the present invention provides a communication system that includes the network device in the fifth aspect described above and the terminal device in the seventh aspect described above; or, the communication system includes the network device in the sixth aspect described above.
  • an embodiment of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the first aspect, the second aspect, and the third aspect are implemented. Or the steps of the precoding index indication method provided by the fourth aspect.
  • the network device can send indication information to the terminal device, the indication information includes M indication fields, each indication field indicates at least two precoding indexes, and each precoding index corresponds to one Receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and M is a positive integer.
  • the network device sends instruction information to the terminal device, so that the terminal device can determine at least two precoding indexes indicated by each of the M indicator fields in the instruction information according to the instruction information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • the network device may send N indication information to the terminal device, each indication information includes an indication field, and the indication fields in the N indication information collectively indicate at least two precoding indexes, and each precoding index Corresponds to one receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • the network device sends N indication information to the terminal device, so that the terminal device can determine, according to the N indication information, that each indication information includes one indication field and at least two of the indication fields in the N indication information indicate jointly. Precoding index. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • FIG. 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present invention
  • FIG. 2 is one of the schematic diagrams of a precoding index indication method provided by an embodiment of the present invention
  • FIG. 3 is a second schematic diagram of a method for indicating a precoding index according to an embodiment of the present invention
  • Figure 4 is one of the schematic structural diagrams of a network device provided by an embodiment of the present invention.
  • FIG. 5 is the second structural diagram of a network device provided by an embodiment of the present invention.
  • Figure 6 is one of the schematic structural diagrams of a terminal device provided by an embodiment of the present invention.
  • FIG. 7 is the second structural diagram of a terminal device provided by an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of hardware of a terminal device provided by an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of hardware of a network device provided by an embodiment of the present invention.
  • first and second in the specification and claims of the present invention are used to distinguish different objects, rather than to describe a specific order of objects.
  • first indication field and the second indication field are used to distinguish different indication fields, rather than to describe the specific order of the indication fields.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • multiple refers to two or more than two, for example, multiple indicator fields refer to two or more indicator fields, etc.
  • the 2 antenna precoding regulations in the 3GPP protocol are as follows:
  • the precoding information and the number of layers can be determined by the following factors:
  • embodiments of the present invention provide a precoding index indication method, device, and system.
  • the precoding index indication method, device, and system provided by the embodiments of the present invention can be applied to a scenario in which a terminal is scheduled to send a precoding vector or a precoding index for uplink data in a multipoint communication.
  • this does not limit other application scenarios, and other possible scenarios can be determined according to actual usage requirements.
  • FIG. 1 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present invention.
  • the communication system may include a terminal device 01 and multiple access points 02.
  • the above-mentioned devices shown in FIG. 1 may be wirelessly connected or wiredly connected.
  • the embodiments of the present invention do not specifically limit the foregoing content, and may be determined according to actual use requirements.
  • a terminal device is a device that provides users with voice and/or data connectivity, a handheld device with a wired/wireless connection function, or other processing devices connected to a wireless modem.
  • the terminal device can communicate with one or more core network devices through a radio access network (RAN).
  • RAN radio access network
  • the terminal device can be a mobile terminal, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal, or a portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile device, which exchanges with the RAN Language and/or data, for example, personal communication service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (personal digital assistants) assistant, PDA) and other equipment.
  • PCS personal communication service
  • SIP Session Initiation Protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • the terminal device may also be called a user agent (user agent) and so on.
  • An access point is a device deployed in the RAN to provide wireless communication functions for the UE.
  • the access point may be a base station, and the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and so on.
  • the names of devices with base station functions may be different.
  • the fifth-generation wireless communication 5-generation, 5G
  • gNB 5G system base station
  • 4G fourth-generation wireless communication
  • eNB evolved NodeB
  • NodeB NodeB
  • base station may change.
  • the embodiment of the present invention provides two precoding index indication methods.
  • One method is that the network device sends an indication message to the terminal device.
  • the terminal device receives the indication information and parses the indication information.
  • the indication information includes M indication domains, and each indication domain Indicates at least two precoding indexes, and M is a positive integer.
  • Another method is that the network device sends N indication information to the terminal device.
  • the terminal device receives the N indication information and parses the N indication information, where each indication information in the N indication information It includes one indication field, and the indication fields in the N indication information collectively indicate at least two precoding indexes, and N is an integer greater than 1.
  • the two precoding index indication methods will be exemplarily described in the following two embodiments respectively.
  • an embodiment of the present invention provides a precoding index indication method.
  • the method can be applied to a multipoint system, and the multipoint system can include multiple receiving points.
  • the method may include the following S201 to S203.
  • the network device sends indication information to the terminal device, where the indication information includes M indication fields, and each indication field indicates at least two precoding indexes.
  • each indication field indicates that each precoding index of the at least two precoding indexes corresponds to one receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • M is a positive integer.
  • the above-mentioned network device may be any one of the multiple receiving points of the multipoint system, or other network devices except the multiple receiving points. It can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.
  • S202 The terminal device receives the instruction information sent by the network device.
  • the terminal device determines that the indication information includes M indication fields and at least two precoding indexes indicated by each indication field.
  • the network device can notify the terminal device of the uplink precoding index or uplink precoding vector (TPMI) used when sending uplink data to the at least one multipoint system through indication information, wherein at least one Each of the multipoint systems may include multiple receiving points.
  • indication information including one indication field as an example, when scheduling a physical uplink shared channel (PUSCH) in a new radio (NR) system, the base station can indicate the terminal device in the DCI format 0_1
  • PUSCH physical uplink shared channel
  • NR new radio
  • an indication field can be used to indicate the precoding index corresponding to each receiving point in a multipoint system; when M is an integer greater than 1, for M
  • one indicator field may be used to indicate the precoding index corresponding to each receiving point in a multipoint system.
  • each indication field may include at least one bit, and the bits in one indication field collectively indicate at least two precoding indexes.
  • the embodiment of the present invention adopts a way of indicating at least two precoding indexes jointly or jointly by the bits in an indication field.
  • the one bit can indicate the precoding index corresponding to the receiving point TRP1 and the precoding index corresponding to the receiving point TRP2.
  • the base station uses the first method of the background technology to notify the terminal equipment of the precoding indexes corresponding to multiple receiving points, it will occupy 2 bits of the DCI to indicate the precoding index corresponding to TRP1, and occupy the other 2 of the DCI. Bit to indicate the precoding index corresponding to TRP2. If the precoding index method provided by the embodiment of the present invention is adopted, only 2 bits of DCI need to be occupied to jointly indicate the precoding index corresponding to the receiving point TRP1 and the precoding index corresponding to the receiving point TRP2, thereby reducing the signaling overhead .
  • the indication information when the above-mentioned indication information includes multiple indication fields, the number of precoding indexes indicated by each indication field may be the same or different; and the number of bits included in each indication field may be the same or different.
  • the indication information may include a first indication field and a second indication field.
  • the first indication field may include 6 bits, and is used to indicate the precoding indexes respectively corresponding to two receiving points in a multipoint system;
  • first The indication field may include 2 bits, and is used to indicate the precoding indexes respectively corresponding to the 2 receiving points in a multipoint system.
  • each indication field may also indicate a rank corresponding to at least two receiving points.
  • at least two receiving points corresponding to one indicator field are receiving points corresponding to the precoding index indicated by one indicator field.
  • the indication field may indicate that the ranks of the receiving point TRP1 and the receiving point TRP2 are both 1, and the precoding index corresponding to the receiving point TRP1 is 1, and the receiving point The precoding index corresponding to the point TRP21 is 0.
  • the ranks of at least two receiving points corresponding to one indication domain are the same. It is understandable that since the rank corresponding to one receiving point is used to indicate the number of data streams of one receiving point, setting the ranks of two receiving points to be the same can ensure that the numbers of data streams of the two receiving points are the same.
  • the above-mentioned indication information may be carried in the control channel.
  • the type of the control channel carrying the foregoing indication information may be dynamic, static, or semi-static, that is, the indication information may be sent by the network device in a dynamic, static, or semi-static manner.
  • the indication information can be carried in a dynamic DCI, or in a semi-static RCK, of course, can also be carried in any other possible control channels, which is not limited in the embodiment of the present invention.
  • Table 4 it is a table of correspondence between TPMI indexes and precoding indexes provided by an embodiment of the present invention. Assuming that the multiTRP system includes 2Tx UEs and 2 TRPs (TRP1 and TRP2), the TPMI joint indication corresponding to the receiving point TRP1 and the receiving point TRP2 requires 3 bits.
  • the terminal device can parse the indication information and determine with reference to Table 4 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information and determine with reference to Table 4 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information and determine with reference to Table 4 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information and determine with reference to Table 4 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information and determine with reference to Table 4 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 2, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • Table 5 it is another correspondence table of TPMI index and precoding index provided by the embodiment of the present invention. Assuming that the multiTRP system includes 2Tx UEs and 2 TRPs (TRP1 and TRP2), the TPMI joint indication corresponding to the receiving point TRP1 and the receiving point TRP2 requires 2 bits.
  • the terminal device can parse the indication information, and refer to Table 5 to determine: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information and determine with reference to Table 5: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information and determine with reference to Table 5: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information and determine with reference to Table 5: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 2, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • Table 5 reduces "When the ranks of the receiving point TRP1 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is Therefore, when the configuration corresponding to Table 5 is adopted, an indication field used to indicate two precoding indexes in the indication information can be reduced from 3 bits to 2 bits, thereby further reducing signaling overhead.
  • Table 6 it is another correspondence table of TPMI index and precoding index provided by the embodiment of the present invention. Assuming that the multiTRP system includes 2Tx UEs and 2 TRPs (TRP1 and TRP2), the TPMI joint indication corresponding to the receiving point TRP1 and the receiving point TRP2 requires 2 bits.
  • the terminal device can parse the indication information, and refer to Table 6 to determine: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information, and refer to Table 6 to determine: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information, and refer to Table 6 to determine: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information, and refer to Table 6 to determine: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 2, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • Table 6 reduces "When the ranks of the receiving point TRP1 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is 1" is a joint configuration, so when the configuration method corresponding to Table 6 is adopted, an indication field used to indicate two precoding indexes in the indication information can be reduced from 3 bits to 2 bits, which can further reduce the signaling overhead .
  • Table 7 it is another correspondence table of TPMI index and precoding index provided by the embodiment of the present invention.
  • the multi TRP system includes 2Tx UEs and 2 TRPs (TRP1 and TRP2), and rank1 has 6 PMIs (a total of 36 combinations), and rank2 has 3 PMIs (a total of 9 combinations), then the receiving point TRP1 and the receiving point TRP2
  • the corresponding TPMI joint indication requires 6 bits.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 2.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 1, and the precoding index of the receiving point TRP2 is 3.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 4.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 and the receiving point TRP2 are both 1, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 5.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 2, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 0.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 2, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 1.
  • the terminal device can parse the indication information and determine with reference to Table 7 above: at the receiving point TRP1 When the ranks of the receiving point TRP2 are both 2, the precoding index of the receiving point TRP1 is 0, and the precoding index of the receiving point TRP2 is 2.
  • the joint configurations in the foregoing Table 4 to Table 7 may be predefined by the protocol or configured for the network device.
  • the foregoing Tables 4 to 7 are exemplified by taking 2 antennas as an example. They do not impose any limitation on the embodiment of the present invention. It is understandable that other numbers of antennas may also be used in actual implementation. The actual use requirements are determined in detail.
  • the embodiment of the present invention provides a precoding index indication method.
  • a network device can send indication information to a terminal device.
  • the indication information includes M indication fields. Each indication field indicates at least two precoding indexes. Corresponds to one receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and M is a positive integer.
  • the network device sends instruction information to the terminal device, so that the terminal device can determine at least two precoding indexes indicated by each of the M indicator fields in the instruction information according to the instruction information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • an embodiment of the present invention provides another precoding index indication method.
  • the method can be applied to a multipoint system, and the multipoint system can include multiple receiving points.
  • the method may include the following S301 to S303.
  • the network device sends N pieces of indication information to the terminal device, each piece of indication information includes one indication field, and the indication fields in the N pieces of indication information collectively indicate at least two precoding indexes.
  • each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • N is an integer greater than 1.
  • the above-mentioned network device may be any one of the multiple receiving points of the multipoint system, or other network devices except the multiple receiving points. It can be determined according to actual use requirements, and the embodiment of the present invention does not limit it.
  • S302 The terminal device receives the N pieces of indication information sent by the network device.
  • the terminal device determines that each indication information includes an indication field, and at least two precoding indexes jointly indicated by the indication fields in the N indication information.
  • the network device can notify the terminal device of the uplink precoding index or uplink precoding vector (TPMI) used when sending uplink data to the multipoint system through multiple indication information, where:
  • TPMI uplink precoding vector
  • the indication field in each indication information of the N indication information includes at least one bit, and the bits in the N indication information collectively indicate at least two precoding indexes.
  • N indication information is sent, and a solution of at least two precoding indexes jointly indicated or jointly indicated by indication fields in the N indication information is adopted.
  • the terminal device when scheduling PUSCH in an NR system, for a multipoint system including 2 receiving points, if the method in the first embodiment is adopted and one indicator field in a DCI is 011, the terminal device will receive this DCI After that, the DCI can be parsed, and two TPMIs used when sending uplink data can be determined according to an indication field 011 in the DCI. If the method in the second embodiment is adopted, it is assumed that the three indication information are respectively carried in the three DCIs, the indication field of the indication information in the first DCI is 0, and the indication field of the indication information in the second DCI is 1.
  • the terminal device can parse these DCIs in sequence according to the receiving order of these 3 DCIs, and determine to send uplink according to the three indication fields 011 of these DCIs.
  • Two TPMIs used in data it is understandable that, compared with the method in the first embodiment, since the second embodiment adopts the method of indicating at least two precoding indexes through the bits in the multiple indication information together, it can reduce Therefore, when the number of bits in the indication field of one indication information is small, the problem that at least two precoding indexes cannot be indicated by the indication field of one indication information is solved.
  • the indication fields in the N indication information collectively indicate at least two precoding indexes
  • the indication fields in the aforementioned N indication information may also collectively indicate the ranks corresponding to the at least two receiving points.
  • the at least two receiving points are receiving points corresponding to the at least two precoding indexes.
  • the indication fields in the N indication information may jointly indicate that the corresponding ranks of the receiving point TRP1 and the receiving point TRP2 are both 1, and The precoding index corresponding to the receiving point TRP1 is 1, and the precoding index corresponding to the receiving point TRP21 is 0.
  • the ranks corresponding to at least two receiving points jointly indicated by the indication fields in the above N indication information are the same. It is understandable that since the rank corresponding to one receiving point is used to indicate the number of data streams of one receiving point, setting the ranks of two receiving points to be the same can ensure that the numbers of data streams of the two receiving points are the same.
  • each indication information can be carried in one control channel, that is, the N indication information is carried in the N control channels, and each The indication information carried by each control channel is different.
  • the type of the control channel carrying each of the N indication information can be dynamic, static or semi-static, that is, each indication information can be dynamic, static or semi-static for the network device. Way to send.
  • the indication information can be carried in a dynamic DCI, or in a semi-static RCK, of course, can also be carried in any other possible control channels, which is not limited in the embodiment of the present invention.
  • Example 1 the four tables provided in Example 1 to Example 4 in the foregoing Embodiment 1 can also be applied to Embodiment 2, and will not be repeated here.
  • Table 1 in Example 1 the TPMI joint indication corresponding to the receiving point TRP1 and the receiving point TRP2 requires 3 bits.
  • One way is that the network device sends 3 indications to the terminal device, and 3 indications
  • the indication field of each indication information in the information includes 1 bit; another way is that the network device sends two indication information to the terminal device, and the indication field of each indication information in the first indication information includes two Bit position, the indication field of each indication in the second indication information includes 1 bit; another way is that the network device sends two indication information to the terminal device, and each indication information in the first indication information
  • the indicator field of includes 1 bit, and the indicator field of each indicator in the second indicator information includes 2 bits.
  • the embodiment of the present invention provides a precoding index indication method.
  • a network device can send N indication information to a terminal device.
  • Each indication information includes an indication field.
  • the indication fields in the N indication information collectively indicate at least two precoding information. Coding index, each precoding index corresponds to a receiving point, and each precoding index is used by the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • the network device sends N indication information to the terminal device, so that the terminal device can determine, according to the N indication information, that each indication information includes one indication field and at least two of the indication fields in the N indication information indicate jointly.
  • Precoding index In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • an embodiment of the present invention provides a network device 400.
  • the network device 400 includes a sending module 401.
  • the sending module 401 may be used to send instruction information to the terminal device.
  • the indication information includes M indication fields, and each indication field indicates at least two precoding indexes. Each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point. M is a positive integer.
  • each indicator field in the M indicator fields may include at least one bit, and the bit in one indicator field collectively indicates at least two precoding indexes.
  • each of the M indication fields may also indicate a rank corresponding to at least two receiving points.
  • at least two receiving points corresponding to one indication field are the receiving points corresponding to the precoding index indicated by the one indication field.
  • the ranks of at least two receiving points corresponding to one indication domain are the same.
  • the foregoing indication information may be sent by the network device in a dynamic, static, or semi-static manner.
  • the network device provided by the embodiment of the present invention can implement each process implemented by the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described herein again.
  • the embodiment of the present invention provides a network device that can send indication information to a terminal device.
  • the indication information includes M indication fields, each indication field indicates at least two precoding indexes, and each precoding index corresponds to one receiving Point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • the network device sends instruction information to the terminal device, so that the terminal device can determine at least two precoding indexes indicated by each of the M indicator fields in the instruction information according to the instruction information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • an embodiment of the present invention provides a network device 500.
  • the network device 500 includes a sending module 501.
  • the sending module 501 may be used to send N pieces of indication information to the terminal device.
  • Each indication information includes an indication field.
  • the indication fields in the N indication information collectively indicate at least two precoding indexes.
  • Each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • N is an integer greater than 1.
  • the indication field in each of the N indication information includes at least one bit, and the bits in the N indication information collectively indicate the at least two precoding indexes.
  • the indication fields in the N indication information may also collectively indicate the ranks corresponding to the at least two receiving points.
  • the at least two receiving points are receiving points corresponding to the at least two precoding indexes.
  • the ranks corresponding to the at least two receiving points are the same.
  • each of the N pieces of indication information may be sent by the network device in a dynamic, static, or semi-static manner.
  • the network device provided by the embodiment of the present invention can implement each process implemented by the network device in the foregoing method embodiment, and in order to avoid repetition, details are not described herein again.
  • the embodiment of the present invention provides a network device that can send N pieces of indication information to a terminal device, each piece of indication information includes an indication field, and the indication fields of the N pieces of indication information collectively indicate at least two precoding indexes, Each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • the network device sends N indication information to the terminal device, so that the terminal device can determine, according to the N indication information, that each indication information includes one indication field and at least two of the indication fields in the N indication information indicate jointly. Precoding index. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • an embodiment of the present invention provides a terminal device 600.
  • the terminal device 600 may include a receiving module 601 and a determining module 602.
  • the receiving module 601 may be used to receive instruction information sent by a network device.
  • the determining module 602 is configured to determine that the indication information includes M indication fields and at least two precoding indexes indicated by each indication field. Among them, each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and M is a positive integer.
  • each indicator field in the M indicator fields may include at least one bit, and the bit in one indicator field collectively indicates at least two precoding indexes.
  • each of the M indication fields may also indicate a rank corresponding to at least two receiving points.
  • at least two receiving points corresponding to one indicator field are receiving points corresponding to the precoding index indicated by one indicator field.
  • the ranks of at least two receiving points corresponding to one indication domain are the same.
  • the instruction information may be sent by the network device in a dynamic, static, or semi-static manner.
  • the terminal device provided in the embodiment of the present invention can implement each process implemented by the terminal device in the foregoing method embodiment, and to avoid repetition, details are not described herein again.
  • An embodiment of the present invention provides a terminal device that can receive instruction information sent by a network device, and determine that the instruction information includes M indicator fields and at least two precoding indexes indicated by each indicator field, where each The precoding index corresponds to one receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • the terminal device can determine at least two precoding indexes indicated by each of the M indication fields in the indication information according to the indication information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • an embodiment of the present invention provides a terminal device 700.
  • the terminal device 700 may include a receiving module 701 and a determining module 702.
  • the receiving module 701 may be used to receive N pieces of indication information sent by a network device.
  • the determining module 702 may be used to determine that each indication information includes an indication field and at least two precoding indexes indicated jointly by the indication fields in the N indication information. Wherein, each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • the indication field in each indication information includes at least one bit, and the bits in the N indication information collectively indicate at least two precoding indexes.
  • the indication fields in the N indication information also jointly indicate the ranks corresponding to the at least two receiving points.
  • the at least two receiving points are receiving points corresponding to the at least two precoding indexes.
  • the ranks corresponding to at least two receiving points are the same.
  • each of the N pieces of indication information is sent by the network device in a dynamic, static, or semi-static manner.
  • the terminal device provided in the embodiment of the present invention can implement each process implemented by the terminal device in the foregoing method embodiment, and to avoid repetition, details are not described herein again.
  • the embodiment of the present invention provides a terminal device, which can receive N pieces of indication information sent by a network device, and determine that each piece of indication information includes one indication field and at least two indication fields of the N indication information jointly indicate The precoding index, where each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • the terminal device can determine, according to the N pieces of indication information, that each piece of indication information includes one indication field, and at least two precoding indexes jointly indicated by the indication fields in the N pieces of indication information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • the network equipment provided in Figures 4 and 5 above includes one module
  • the terminal equipment provided in Figures 6 and 7 above includes two modules as an example.
  • the examples create limitations. It can be understood that in actual implementation, the network device and the terminal device may also include any other possible modules.
  • FIG. 8 is a schematic diagram of the hardware structure of a terminal device that implements various embodiments of the present invention.
  • the terminal device 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, and a memory 109 , The processor 110, and the power supply 111 and other components.
  • the structure of the terminal device shown in FIG. 8 does not constitute a limitation on the terminal device, and the terminal device may include more or less components than those shown in the figure, or a combination of certain components, or different components. Layout.
  • terminal devices include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.
  • the first possible implementation manner is that the radio frequency unit 101 may be used to receive instruction information sent by a network device.
  • the processor 110 may be configured to determine that the indication information includes M indication fields and at least two precoding indexes indicated by each indication field. Wherein, each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and M is a positive integer.
  • An embodiment of the present invention provides a terminal device that can receive instruction information sent by a network device, and determine that the instruction information includes M indicator fields and at least two precoding indexes indicated by each indicator field, where each The precoding index corresponds to one receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • the terminal device can determine at least two precoding indexes indicated by each of the M indication fields in the indication information according to the indication information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • the second possible implementation manner is that the radio frequency unit 101 may be used to receive N pieces of indication information sent by a network device.
  • the processor 110 may be configured to determine that each indication information includes an indication field, and at least two precoding indexes jointly indicated by the indication fields in the N indication information. Wherein, each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point, and N is an integer greater than 1.
  • the embodiment of the present invention provides a terminal device, which can receive N pieces of indication information sent by a network device, and determine that each piece of indication information includes one indication field and at least two indication fields of the N indication information jointly indicate The precoding index, where each precoding index corresponds to a receiving point, and each precoding index is used for the terminal device to send uplink data to the corresponding receiving point.
  • the terminal device can determine, according to the N pieces of indication information, that each piece of indication information includes one indication field, and at least two precoding indexes jointly indicated by the indication fields in the N pieces of indication information. In this way, not only the signaling overhead for indicating precoding indexes can be reduced, but also the terminal device can send uplink data according to these precoding indexes.
  • the radio frequency unit 101 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, the downlink data from the base station is received and processed by the processor 110; in addition, Uplink data is sent to the base station.
  • the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 101 can also communicate with the network and other devices through a wireless communication system.
  • the terminal device provides users with wireless broadband Internet access through the network module 102, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 103 can convert the audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output it as sound. Moreover, the audio output unit 103 may also provide audio output related to a specific function performed by the terminal device 100 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 104 is used to receive audio or video signals.
  • the input unit 104 may include a graphics processing unit (GPU) 1041, a microphone 1042, and a camera module 1043.
  • the graphics processing unit 1041 is used for the static images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode.
  • the image data of the picture or video is processed.
  • the processed image frame can be displayed on the display unit 106.
  • the image frames processed by the graphics processor 1041 can be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the network module 102.
  • the microphone 1042 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 101 for output in the case of a telephone call mode.
  • the camera module 1043 can collect images, and can process the collected images into digital signals, and the processed images can be sent to the mobile communication base station via the radio frequency unit 101 and output in a format.
  • the terminal device 100 further includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 1061 and the display panel 1061 when the terminal device 100 is moved to the ear. / Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the terminal device (such as horizontal and vertical screen switching, related games) , Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 105 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, Infrared sensors, etc., will not be repeated here.
  • the display unit 106 is used to display information input by the user or information provided to the user.
  • the display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 107 may be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the terminal device.
  • the user input unit 107 includes a touch panel 1071 and other input devices 1072.
  • the touch panel 1071 also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 1071 or near the touch panel 1071. operate).
  • the touch panel 1071 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 110, the command sent by the processor 110 is received and executed.
  • the touch panel 1071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 107 may also include other input devices 1072.
  • other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 1071 can be overlaid on the display panel 1061.
  • the touch panel 1071 detects a touch operation on or near it, it transmits it to the processor 110 to determine the type of the touch event, and then the processor 110 determines the type of touch event according to the touch.
  • the type of event provides corresponding visual output on the display panel 1061.
  • the touch panel 1071 and the display panel 1061 are used as two independent components to realize the input and output functions of the terminal device, but in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated
  • the implementation of the input and output functions of the terminal device is not specifically limited here.
  • the interface unit 108 is an interface for connecting an external device with the terminal device 100.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 108 can be used to receive input from an external device (for example, data information, power, etc.) and transmit the received input to one or more elements in the terminal device 100 or can be used to connect to the terminal device 100 and external devices. Transfer data between devices.
  • the memory 109 can be used to store software programs and various data.
  • the memory 109 may mainly include a program storage area and a data storage area.
  • the program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 109 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 110 is the control center of the terminal device. It uses various interfaces and lines to connect the various parts of the entire terminal device, runs or executes software programs and/or modules stored in the memory 109, and calls data stored in the memory 109. , Perform various functions of the terminal equipment and process data, so as to monitor the terminal equipment as a whole.
  • the processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, the first user interface, and application programs, etc., The modem processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 110.
  • the terminal device 100 may also include a power source 111 (such as a battery) for supplying power to various components.
  • a power source 111 such as a battery
  • the power source 111 may be logically connected to the processor 110 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal device 100 includes some functional modules not shown, which will not be repeated here.
  • an embodiment of the present invention also provides a terminal device, including a processor 110 as shown in FIG. 8, a memory 109, a computer program stored in the memory 109 and running on the processor 110, and the computer program is
  • the processor 110 implements each process of the foregoing privacy protection method embodiment when executing, and can achieve the same technical effect. To avoid repetition, details are not described herein again.
  • FIG. 9 is a schematic diagram of the hardware structure of a network device provided by an embodiment of the present invention.
  • the network device 900 may include: one or more processors 901, a memory 902, a communication interface 903, and a bus 904.
  • the bus 904 may be a peripheral component interconnect standard (PCI) bus or an extended industry standard architecture (EISA) bus, etc.
  • PCI peripheral component interconnect standard
  • EISA extended industry standard architecture
  • the above-mentioned bus 904 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 9, but it does not mean that there is only one bus or one type of bus.
  • the network device 900 may also include some functional modules not shown, which will not be repeated here.
  • the embodiment of the present invention also provides a network device, including the processor 901 shown in FIG. 9, a memory 902, a computer program stored in the memory 902 and running on the processor 901, and the computer program is processed
  • a network device including the processor 901 shown in FIG. 9, a memory 902, a computer program stored in the memory 902 and running on the processor 901, and the computer program is processed
  • the device 901 is executed, each process of the foregoing method embodiment is implemented, and the same technical effect can be achieved. In order to avoid repetition, details are not described herein again.
  • the embodiment of the present invention also provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program is executed by the processor 110 shown in FIG. 8 or the processor 901 shown in FIG. 9
  • a computer-readable storage medium such as read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, etc.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes a number of instructions to enable a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of the various embodiments of the present invention.
  • a terminal device which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

Les modes de réalisation de la présente invention concernent un procédé, un dispositif et un système d'indication d'un indice de précodage. Le procédé comprend : l'envoi d'informations d'indication à un dispositif de terminal. Les les informations d'indication comprennent M champs d'indication, chaque champ d'indication indiquant au moins deux indices de précodage. Chaque indice de précodage correspond à un point de réception et chaque indice de précodage est utilisé pour que le dispositif de terminal envoie des données de liaison montante à un point de réception correspondant ; et M est un entier positif.
PCT/CN2021/086019 2020-04-09 2021-04-08 Procédé, dispositif et système d'indication d'un indice de précodage WO2021204217A1 (fr)

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