Communication method and device

Abstract

The invention discloses a communication method and device, and the method comprises the steps: receiving downlink control information which is used for scheduling a first code word and / or a second code word; determining a receiving antenna group corresponding to the first code word and / or a receiving antenna group corresponding to the second code word; and according to the downlink control information, receiving the first code word through the receiving antenna group corresponding to the first code word, and / or receiving the second code word through the receiving antenna group corresponding to the second code word. Based on the method described by the invention, the receiving antennas of the terminal can be grouped, the code words are received through the receiving antenna group, and each group of receiving antennas performs independent data demodulation, so that the implementation complexity of terminal receiving can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a communication method and device. Background Art

[0002] When a terminal receives downlink data, it usually uses all receiving antennas for joint reception. When the number of receiving antennas is large, the implementation complexity of joint reception of all antennas is high. Therefore, how to reduce the implementation complexity of terminal reception is a problem that needs to be solved. Summary of the invention

[0003] The present application provides a communication method and device, which can group receiving antennas, thereby supporting a terminal to perform data demodulation by using receiving antenna grouping, thereby reducing the implementation complexity of terminal reception.

[0004] In a first aspect, the present application provides a communication method, the method comprising:

[0005] receiving downlink control information, where the downlink control information is used to schedule the first codeword and / or the second codeword;

[0006] Determine a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword;

[0007] According to the downlink control information, the first codeword is received through the receiving antenna group corresponding to the first codeword, and / or the second codeword is received through the receiving antenna group corresponding to the second codeword.

[0008] Based on the method described in the first aspect, the receiving antennas of the terminal can be grouped, and codewords can be received through the receiving antenna groups. Each group of receiving antennas performs independent data demodulation, which can reduce the implementation complexity of terminal reception.

[0009] In a possible embodiment, the downlink control information includes first indication information, which indicates the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword; determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword includes: determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the first indication information.

[0010] By adding the first indication information in the downlink control information to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, the indication can be made more flexible.

[0011] In a possible embodiment, when the value of the first indication information is a first value, the receiving antenna group corresponding to the first codeword is a first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is a second receiving antenna group;

[0012] When the value of the first indication information is the second value, the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0013] In a possible embodiment, the downlink control information includes an antenna port indication field, which is used to indicate an antenna port combination; determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword includes: determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field.

[0014] In this possible embodiment, the antenna port indication field can be reused to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword. In this way, no additional field is needed to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, which can save the bit overhead in the downlink control information.

[0015] In a possible embodiment, determining a receiving antenna group corresponding to a first codeword and / or a receiving antenna group corresponding to a second codeword based on an antenna port indication field includes: determining a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword based on an antenna port combination indicated by the antenna port indication field.

[0016] Based on this possible embodiment, the bits used for the antenna port combination in the antenna port indication field can be reused to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, so that the remaining bits in the antenna port indication field can indicate more other information.

[0017] In a possible embodiment, the antenna port indication field includes a first part of bits and a second part of bits, the first part of bits are used to indicate the antenna port combination, and the second part of bits are used to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword; determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field includes: determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the second part of bits in the antenna port indication field.

[0018] Based on this possible embodiment, the antenna port indication field can be made to more flexibly indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword.

[0019] In a possible embodiment, the receiving antenna group corresponding to the first codeword is pre-specified by the protocol and / or the receiving antenna group corresponding to the second codeword is pre-specified by the protocol. Pre-specifying the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword by the protocol is conducive to saving the overhead of the indication bit.

[0020] In a second aspect, the present application provides a communication method, the method comprising:

[0021] Measuring a downlink reference signal by using the first receiving antenna group and the second receiving antenna group to obtain a channel state information CSI measurement result, where the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group;

[0022] Send a CSI report based on the CSI measurement result, where the CSI report carries a rank indication RI;

[0023] Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

[0024] In order to ensure that the two groups of receiving antennas perform data demodulation independently, the terminal needs to perform joint CSI measurement and reporting on the two groups of receiving antennas. It can be seen that based on the method described in the second aspect, the terminal can perform joint CSI measurement and reporting on the two groups of receiving antennas, thereby supporting the terminal to perform data demodulation by receiving antenna grouping, thereby reducing the implementation complexity of terminal reception.

[0025] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0026] The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0027] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI corresponding to a first codeword in CQI; the second part includes PMI and CQI corresponding to a second codeword in CQI.

[0028] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0029] The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Alternatively, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0030] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0031] In a possible embodiment, the CSI report further includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

[0032] In a third aspect, the present application provides a communication method, the method comprising:

[0033] Sending a downlink reference signal;

[0034] receiving a CSI report, where the CSI report carries a rank indication RI;

[0035] Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group of the terminal, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group of the terminal; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

[0036] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0037] The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0038] Based on this possible embodiment, when there are multiple codewords, the PMI and CQI corresponding to each codeword can be indicated.

[0039] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI corresponding to a first codeword in CQI; the second part includes PMI and CQI corresponding to a second codeword in CQI.

[0040] By dividing the CSI report into a first part and a second part, when the uplink resources required for the CSI report are greater than the uplink resources allocated by the network device, that is, when the feedback channel cannot carry the complete CSI report, the terminal can send only the first part of the CSI report and discard the second part of the CSI report. This is conducive to successfully sending important information in the CSI report to the network device.

[0041] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0042] The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Alternatively, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0043] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0044] By dividing the CSI report into a first part and a second part, when the uplink resources required for the CSI report are greater than the uplink resources allocated by the network device, that is, when the feedback channel cannot carry the complete CSI report, the terminal can send only the first part of the CSI report and discard the second part of the CSI report. This is conducive to successfully sending important information in the CSI report to the network device.

[0045] In a possible embodiment, the CSI report further includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

[0046] Based on this possible embodiment, the network device can determine the receiving antenna group corresponding to the PMI and the CQI.

[0047] The beneficial effects of the third aspect can be found in the beneficial effects of the second aspect, which will not be elaborated here.

[0048] In a fourth aspect, the present application provides a communication device, which includes a unit for executing the method of the first aspect, the second aspect, or the third aspect.

[0049] In a fifth aspect, the present application provides a chip, comprising a processor and a communication interface, wherein the processor is configured to enable the chip to execute the method of the first aspect, the second aspect, or the third aspect.

[0050] In the sixth aspect, the present application provides a module device, which includes a communication module, a power module, a storage module and a chip, wherein: the power module is used to provide power to the module device; the storage module is used to store data and instructions; the communication module is used for internal communication of the module device, or for the module device to communicate with external devices; the chip is used to execute the method of the first aspect, the second aspect or the third aspect above.

[0051] In the seventh aspect, an embodiment of the present invention discloses a communication device, which includes a memory and a processor, the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method described in the first aspect, the second aspect, or the third aspect above.

[0052] In an eighth aspect, the present application provides a computer-readable storage medium, which stores computer-readable instructions. When the computer-readable instructions are executed on a communication device, the communication device executes the method described in the first aspect, the second aspect, or the third aspect.

[0053] In a ninth aspect, the present application provides a computer program or a computer program product, comprising codes or instructions, which, when executed on a computer, enable the computer to execute the method described in the first, second or third aspect above.

[0054] In a tenth aspect, the present application provides a communication system, including a terminal device and a network device, wherein the terminal device is used to execute the method described in the second aspect, and the network device is used to execute the method described in the third aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0056] Figure 1 is a schematic diagram of a communication system 10 provided in an embodiment of the present application;

[0057] Figure 2 It is a flow chart of a communication method provided in an embodiment of the present application;

[0058] Figure 3 It is a flow chart of a communication method provided in an embodiment of the present application;

[0059] Figure 4 is a structural diagram of a communication device provided in an embodiment of the present application;

[0060] Figure 5 It is a structural diagram of a communication device provided in an embodiment of the present application;

[0061] Figure 6 It is a structural schematic diagram of a module device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations on the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "a", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context.

[0064] In the embodiments of the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B can represent the following three situations: A exists alone; A and B exist at the same time; B exists alone. Among them, A and B can be singular or plural.

[0065] In the embodiment of the present application, the symbol " / " can indicate that the objects associated with each other are in an "or" relationship. In addition, the symbol " / " can also indicate a division sign, that is, performing a division operation. For example, A / B can indicate A divided by B.

[0066] In the embodiments of the present application, "at least one item" or similar expressions refer to any combination of these items, including any combination of single items or plural items, and refer to one or more, and multiple refers to two or more. For example, at least one item of a, b, or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b, and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

[0067] In the embodiments of the present application, "equal to" can be used in conjunction with greater than, and is applicable to the technical solution adopted when greater than, and can also be used in conjunction with less than, and is applicable to the technical solution adopted when less than. When equal to is used in conjunction with greater than, it is not used in conjunction with less than; when equal to is used in conjunction with less than, it is not used in conjunction with greater than.

[0068] It should be noted that the terms "first", "second", "third", etc. in the specification and claims of the present application and in the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0069] To facilitate understanding of the embodiments of the present application, the system architecture involved in the present application is described below.

[0070] The present application can be applied to a fifth generation (5G) system, also known as a new radio (NR) system; or can be applied to a sixth generation (6G) system, or a seventh generation (7G) system, or other future communication systems; or can also be used in a device to device (D2D) system, a machine to machine (M2M) system, a vehicle to everything (V2X), and the like.

[0071] This application can be applied to Figure 1 In the communication system 10 shown. Figure 1 The communication system 10 shown may include, but is not limited to: a network device 110 and a terminal 120 . Figure 1 The number and form of the devices are used for example only and do not constitute a limitation on the embodiments of the present application. For example, multiple terminals may be included in actual applications.

[0072] 1. Terminal

[0073] A terminal can be a device with transceiver functions, and can also be called terminal equipment, user equipment (UE), remote terminal (remote UE), relay equipment (relay UE), access terminal, user unit, user station, mobile station, mobile station, remote station, mobile device, user terminal, intelligent terminal, wireless communication device, user agent or user device. It should be noted that a relay device is a terminal that can provide relay forwarding services for other terminals (including remote terminals).

[0074] For example, the terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in unmanned autonomous driving, a wireless terminal in remote medical, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, or a wireless terminal in a smart home, etc.

[0075] For another example, the terminal may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal in a next-generation communication system (such as an NR communication system, a 6G communication system), or a terminal in a future evolved public land mobile communication network (PLMN), etc., without specific limitation.

[0076] In some possible implementations, the terminal can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; can be deployed on the water surface (such as ships, etc.); can be deployed in the air (such as airplanes, balloons and satellites, etc.).

[0077] In some possible implementations, the terminal may include a device with a wireless communication function, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip and may also include other discrete devices.

[0078] In some possible implementations, the terminal described in the embodiments of the present application may be a chip, a chip module, a device, a unit, etc., without specific limitation.

[0079] 2. Network equipment

[0080] A network device may be a device with transceiver functions and may be used to communicate with a terminal.

[0081] In some possible implementations, the network device may be responsible for radio resource management (RRM), quality of service (QoS) management, data compression and encryption, data transmission and reception, etc. on the air interface side.

[0082] In some possible implementations, the network device may include a base station (BS) in a communication system or a device deployed in a radio access network (RAN) for providing wireless communication functions, that is, the network device may include a device in the RAN.

[0083] For example, the devices in the RAN may include an evolved node B (evolutional node B, eNB or eNodeB) in an LTE communication system, a next generation evolved node B (next generation evolved node B, ng-eNB) in an NR communication system, a next generation node B (next generation node B, gNB) in an NR communication system, a master node (MN) in a dual-connection architecture, a second node or secondary node (SN) in a dual-connection architecture, etc., without specific limitation.

[0084] In some possible implementations, the network device may include a device in a core network (CN).

[0085] For example, the equipment in the CN may include an access and mobility management function (AMF), a user plane function (UPF), a session management function (SMF), etc.

[0086] In some possible implementations, the network device may also be an access point (AP) in a WLAN, a relay station, a communication device in a future evolved PLMN network, a communication device in an NTN network, and the like.

[0087] In some possible implementations, the network device may include a device having a wireless communication function for the terminal, such as a chip system, a chip, or a chip module. For example, the chip system may include a chip, or may include other discrete devices.

[0088] In some possible implementations, the network device may communicate with an Internet Protocol (IP) network, such as the Internet, a private IP network, or other data networks.

[0089] In some possible implementations, the network device may include an independent node to implement the functions of the above-mentioned base station, or may include two or more independent nodes to implement the functions of the above-mentioned base station. For example, the network device includes a centralized unit (CU) and a distributed unit (DU), such as gNB-CU and gNB-DU. Further, in some other embodiments of the present application, the network device may also include an active antenna unit (AAU). Among them, the CU implements part of the functions of the network device, and the DU implements another part of the functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer. The DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer. In addition, the AAU can implement some physical layer processing functions, radio frequency processing, and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be converted from the information of the PHY layer, under this network deployment, high-level signaling (such as RRC signaling) can be considered to be generated by the CU, sent by the DU, or sent by the DU and the AAU. It can be understood that the network device may include at least one of the CU, DU, and AAU. In addition, the CU can be divided into a RAN device, or the CU can be divided into a core network device, without specific limitation.

[0090] In some possible implementations, the network device may be any one of the multiple sites that perform coherent joint transmission (CJT) with the terminal, or other sites outside the multiple sites, or other network devices that perform network communication with the terminal, and there is no specific limitation on this. Among them, multi-site coherent cooperative transmission can be multiple sites jointly coherent transmission, or different data belonging to the same physical downlink shared channel (PDSCH) are sent from different sites to the terminal, or multiple sites are virtualized into one site for transmission, and the names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters. The sites in multi-site coherent cooperative transmission can be remote radio heads (RRHs), transmission and reception points (TRPs), network devices, etc., and there is no specific limitation on this.

[0091] In some possible implementations, the network device may be any one of the multiple sites that perform incoherent collaborative transmission with the terminal, or other sites outside the multiple sites, or other network devices that perform network communications with the terminal, and there is no specific limitation on this. Among them, multi-site incoherent collaborative transmission may be multiple sites joint incoherent transmission, or different data belonging to the same PDSCH is sent from different sites to the terminal, or different data belonging to the same PDSCH is sent from different sites to the terminal, and the names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters. The sites in multi-site incoherent collaborative transmission may be RRH, TRP, network equipment, etc., and there is no specific limitation on this.

[0092] In some possible implementations, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set up in a location such as land or water.

[0093] In some possible implementations, a network device may provide services for a cell, and a terminal in the cell may communicate with the network device through transmission resources (such as spectrum resources). The cell may be a macro cell, a small cell, a metro cell, a micro cell, a pico cell, a femto cell, etc.

[0094] In some possible implementations, the network device described in the embodiments of the present application may be a chip, a chip module, a device, a unit, etc., without specific limitation.

[0095] See also Figure 2 , Figure 2 It is a flowchart of a communication method provided in an embodiment of the present application, and the communication method includes steps 201 to 204. Figure 2 The method shown may be performed by a terminal or a network device, or may be performed by a chip in the terminal or the network device. Figure 2 The method execution subject shown may also be other types of products, and those skilled in the art may further expand it based on the contents disclosed in the specification.

[0096] 201. A network device sends downlink control information to a terminal, where the downlink control information is used to schedule a first codeword and / or a second codeword. Accordingly, the terminal may receive the downlink control information.

[0097] In an embodiment of the present application, downlink control information (DCI) may be carried in a physical downlink control channel (PDCCH). The network device performs downlink scheduling on the terminal through the downlink control information. When the number of spatial layers of downlink scheduling is 1 to 4, the number of codewords sent by the network device is 1; when the number of scheduled layers is 4 to 8, the number of codewords sent by the network device is 2. A codeword refers to a group of encoded data bits.

[0098] 202. The terminal determines a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword.

[0099] In the embodiment of the present application, after receiving the downlink control information, the terminal may determine the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword. If the downlink control information schedules the first codeword, the terminal determines the receiving antenna group corresponding to the first codeword. If the downlink control information schedules the second codeword, the terminal determines the receiving antenna group corresponding to the second codeword. If the downlink control information schedules the first codeword and the second codeword, the terminal determines the receiving antenna group corresponding to the first codeword and the receiving antenna group corresponding to the second codeword, and the first codeword and the second codeword correspond to different receiving antenna groups.

[0100] In an embodiment of the present application, the receiving antennas of the terminal are grouped into multiple receiving antenna groups. Each receiving antenna group includes one or more receiving antennas, and the receiving antennas included in different receiving antenna groups are not exactly the same. For example, assuming that the terminal has 8 receiving antennas, receiving antenna group 1 includes receiving antennas 1 to 4, and receiving antenna group 2 includes receiving antennas 5 to 8. For another example, assuming that the terminal has 8 receiving antennas, receiving antenna group 1 includes receiving antennas 1 to 5, and receiving antenna group 2 includes receiving antennas 6 to 8. For another example, assuming that the terminal has 8 receiving antennas, receiving antenna group 1 includes receiving antennas 1 to 5, and receiving antenna group 2 includes receiving antennas 5 to 8.

[0101] When a terminal receives a codeword, if the terminal has a large number of receiving antennas, the implementation complexity of using all receiving antennas to jointly receive the codeword is high. Therefore, it is possible to consider grouping the receiving antennas of the terminal, and receive the codeword through the receiving antenna group. Each group of receiving antennas can perform independent data demodulation, which can reduce the implementation complexity of the terminal reception.

[0102] Several implementations of the terminal determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword are introduced below:

[0103] 1. The downlink control information includes first indication information, wherein the first indication information indicates a receiving antenna group corresponding to a first codeword and / or a receiving antenna group corresponding to a second codeword; determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword includes: determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the first indication information.

[0104] If the downlink control information schedules the first codeword, the first indication information indicates the receiving antenna group corresponding to the first codeword. If the downlink control information schedules the second codeword, the first indication information indicates the receiving antenna group corresponding to the second codeword. If the downlink control information schedules the first codeword and the second codeword, the first indication information indicates the receiving antenna group corresponding to the first codeword and the receiving antenna group corresponding to the second codeword. That is, the first indication information can explicitly indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword. By adding the first indication information to the downlink control information to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, the indication can be made more flexible.

[0105] In a possible embodiment, when the value of the first indication information is a first value, the receiving antenna group corresponding to the first codeword is the first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the second receiving antenna group; when the value of the first indication information is a second value, the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0106] For example, assuming that the length of the first indication information is 1 bit. When the value of the first indication information is 0, it indicates that the receiving antenna group corresponding to the first codeword is the first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the second receiving antenna group; when the value of the first indication information is 1, it indicates that the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0107] For example, when the value of the first indication information is 1, it indicates that the receiving antenna group corresponding to the first codeword is the first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the second receiving antenna group; when the value of the first indication information is 0, it indicates that the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0108] The embodiment of the present application does not limit the length of the first indication information, which can be 1 bit or multiple bits.

[0109] 2. The downlink control information includes an antenna port indication field, which is used to indicate an antenna port combination; determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, including: determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field.

[0110] That is to say, the antenna port indication field can be reused to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword. In this way, there is no need to add a new field to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, which can save the bit overhead in the downlink control information.

[0111] In a possible embodiment, determining a receiving antenna group corresponding to a first codeword and / or a receiving antenna group corresponding to a second codeword based on an antenna port indication field includes: determining a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword based on an antenna port combination indicated by the antenna port indication field.

[0112] For example, if the antenna port indication field indicates that the antenna port combination is {antenna port 1, antenna port 2, antenna port 3}, the receiving antenna group corresponding to the first codeword is the first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the second receiving antenna group. If the antenna port indication field indicates that the antenna port combination is {antenna port 4, antenna port 5, antenna port 6}, the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0113] Based on this possible embodiment, the bits used for the antenna port combination in the antenna port indication field can be reused to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, so that the remaining bits in the antenna port indication field can indicate more other information.

[0114] In a possible embodiment, the antenna port indication field includes a first part of bits and a second part of bits, the first part of bits are used to indicate the antenna port combination, and the second part of bits are used to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword; determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field includes: determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the second part of bits in the antenna port indication field.

[0115] For example, the antenna port indication field includes 3 bits, 2 bits of which are used to indicate the antenna port combination, and the remaining 1 bit is used to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword. In this way, the antenna port indication field can more flexibly indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword.

[0116] 3. The receiving antenna group corresponding to the first codeword is pre-defined by the protocol and / or the receiving antenna group corresponding to the second codeword is pre-defined by the protocol.

[0117] For example, the protocol predetermines a first receiving antenna group corresponding to a first codeword and a second receiving antenna group corresponding to a second codeword.

[0118] Predetermining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword through a protocol is beneficial to saving the overhead of indication bits.

[0119] 203. The network device sends the first codeword and / or the second codeword to the terminal.

[0120] 204. The terminal receives the first codeword through the receiving antenna group corresponding to the first codeword according to the downlink control information, and / or receives the second codeword through the receiving antenna group corresponding to the second codeword.

[0121] It can be seen that based on Figure 2 The described method can group the receiving antennas of the terminal, receive codewords through the receiving antenna groups, and each group of receiving antennas performs independent data demodulation, which can reduce the implementation complexity of terminal reception.

[0122] See also Figure 3 , Figure 3 It is a flowchart of a communication method provided in an embodiment of the present application, and the communication method includes steps 301 to 303. Figure 3 The method shown may be performed by a terminal or a network device, or may be performed by a chip in the terminal or the network device. Figure 3 The method execution subject shown may also be other types of products, and those skilled in the art may further expand it based on the contents disclosed in the specification.

[0123] 301. A network device sends a downlink reference signal to a terminal.

[0124] Optionally, the downlink reference signal may be a channel state information-reference signal (CSI-reference signal, CSI-RS), or other downlink reference signals, such as a synchronization signal / physical broadcast channel block (synchronization signal / physical broadcast channel block, SSB).

[0125] 302. The terminal measures the downlink reference signal through the first receiving antenna group and the second receiving antenna group to obtain a channel state information (CSI) measurement result, where the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group.

[0126] In an embodiment of the present application, the receiving antennas of the terminal are grouped into a first receiving antenna group and a second receiving antenna group. Each receiving antenna group includes one or more receiving antennas, and the receiving antennas included in different receiving antenna groups are not exactly the same. For example, assuming that the terminal has 8 receiving antennas, receiving antenna group 1 includes receiving antennas 1 to 4, and receiving antenna group 2 includes receiving antennas 5 to 8. For another example, assuming that the terminal has 8 receiving antennas, receiving antenna group 1 includes receiving antennas 1 to 5, and receiving antenna group 2 includes receiving antennas 6 to 8. For another example, assuming that the terminal has 8 receiving antennas, receiving antenna group 1 includes receiving antennas 1 to 5, and receiving antenna group 2 includes receiving antennas 5 to 8.

[0127] In the embodiment of the present application, the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group, which means that the CSI measurement result is obtained by jointly measuring the first receiving antenna group and the second receiving antenna group.

[0128] In a possible embodiment, the network side may also send configuration information to the terminal, where the configuration information is used to configure the terminal to send a CSI report. Correspondingly, the terminal may also receive the configuration information.

[0129] In a possible embodiment, for the CSI measurement result, the number of CSI processing units occupied by the terminal is X; X is 2, or X is determined according to the processing capability reported by the terminal.

[0130] 303. The terminal sends a CSI report to the network device based on the CSI measurement result, where the CSI report carries a rank indicator (RI). Accordingly, the network device may receive the CSI report.

[0131] The RI indicates the number of transmission streams that can be used by the network device recommended by the terminal for data transmission.

[0132] In a first possible embodiment, the number of RIs is 2, a first RI in the RIs indicates a rank corresponding to a first receiving antenna group of the terminal, and a second RI in the RIs indicates a rank corresponding to a second receiving antenna group of the terminal.

[0133] In a second possible embodiment, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group. For example, the rank corresponding to the first receiving antenna group is The rank corresponding to the second receiving antenna group is α is the rank indicated by RI.

[0134] In a possible embodiment, the CSI report also carries a precoding matrix indicator (PMI), a channel quality indicator (CQI) and a reference signal resource indicator (CSI-RS resource indicator, CRI).

[0135] PMI is used to indicate the recommended precoding matrix for the number of transmission streams. CQI indicates the recommended modulation and coding scheme for the number of transmission streams and precoding matrix. CRI is when the network device configures multiple CSI-RS or SSB for CSI measurement, the terminal tells the network device which resource the measurement is based on.

[0136] The following is an introduction to the CSI report, including the number of PMI, CQI, and CRI carried:

[0137] 1. The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2; or, the number of RIs is 2, and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0138] When the rank indicated by one RI is greater than 4, or the sum of the ranks indicated by two RIs is greater than 4, there are two codewords. Therefore, the number of PMIs and CQIs is two. The first PMI and the first CQI correspond to the first codeword, and the second PMI and the second CQI correspond to the second codeword.

[0139] In a possible embodiment, when the rank indicated by one RI is greater than 4, or the sum of the ranks indicated by two RIs is greater than 4, the CSI report is divided into a first part and a second part, the first part including CRI, RI, and CQI corresponding to the first codeword in CQI; the second part includes PMI and CQI corresponding to the second codeword in CQI.

[0140] By dividing the CSI report into a first part and a second part, when the uplink resources required for the CSI report are greater than the uplink resources allocated by the network device, that is, when the feedback channel cannot carry the complete CSI report, the terminal can send only the first part of the CSI report and discard the second part of the CSI report. This is conducive to successfully sending important information in the CSI report to the network device.

[0141] 2. The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0142] When the rank indicated by one RI is less than or equal to 4, or when the sum of the ranks indicated by two RIs is less than or equal to 4, there is one codeword. Therefore, the number of PMI and CQI are both one.

[0143] In a possible embodiment, when the rank indicated by one RI is less than or equal to 4, or the sum of the ranks indicated by two RIs is less than or equal to 4, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0144] By dividing the CSI report into a first part and a second part, when the uplink resources required for the CSI report are greater than the uplink resources allocated by the network device, that is, when the feedback channel cannot carry the complete CSI report, the terminal only sends the first part of the CSI report and discards the second part of the CSI report. This is conducive to successfully sending important information in the CSI report to the network device.

[0145] In a possible embodiment, when the rank indicated by one RI is less than or equal to 4, or the sum of the ranks indicated by two RIs is less than or equal to 4, the CSI report also includes first indication information, and the first indication information is used to indicate the receiving antenna group corresponding to the PMI and CQI, and the first indication information is located in the first part or the second part.

[0146] Based on this possible embodiment, the network device can determine the receiving antenna group corresponding to the PMI and the CQI.

[0147] In order to ensure that the two groups of receiving antennas can independently demodulate data, the terminal needs to perform joint CSI measurement and reporting for the two groups of receiving antennas. Figure 3 With the described method, the terminal can perform joint CSI measurement and reporting on two groups of receiving antennas, thereby supporting the terminal to perform data demodulation in a receiving antenna grouping manner, thereby reducing the implementation complexity of the terminal reception.

[0148] See also Figure 4 , Figure 4 1 is a schematic diagram of the structure of a communication device in an embodiment of the present application. The communication device can be used to perform some or all of the functions of the terminal in the above method embodiment. The device can be a terminal, or a device in a terminal, or a device that can be used in conjunction with a terminal. The communication device can also be a chip system. Figure 4 The communication device shown includes a communication unit 401 and a processing unit 402. The communication unit 401 is used to send and receive data. The communication unit 401 integrates a receiving unit and a sending unit. The communication unit 401 can also be called a transceiver unit. Alternatively, the communication unit 401 can also be split into a receiving unit and a sending unit. The processing unit 402 is used to process data. Among them:

[0149] A communication unit 401, configured to receive downlink control information, where the downlink control information is used to schedule a first codeword and / or a second codeword;

[0150] A processing unit 402 is configured to determine a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword;

[0151] The communication unit 401 is further configured to receive the first codeword through the receiving antenna group corresponding to the first codeword and / or receive the second codeword through the receiving antenna group corresponding to the second codeword according to the downlink control information.

[0152] In a possible embodiment, the downlink control information includes first indication information, where the first indication information indicates a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword; and the processing unit 402 determines the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, including:

[0153] A receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined based on the first indication information.

[0154] In a possible embodiment, when the value of the first indication information is a first value, the receiving antenna group corresponding to the first codeword is a first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is a second receiving antenna group;

[0155] When the value of the first indication information is the second value, the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0156] In a possible embodiment, the downlink control information includes an antenna port indication field, where the antenna port indication field is used to indicate an antenna port combination; the processing unit 402 determines the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword, including:

[0157] A receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword are determined based on the antenna port indication field.

[0158] In a possible embodiment, the processing unit 402 determines the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field, including:

[0159] Based on the antenna port combination indicated by the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined.

[0160] In a possible embodiment, the antenna port indication field includes a first part of bits and a second part of bits, the first part of bits is used to indicate the antenna port combination, and the second part of bits is used to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword;

[0161] The processing unit 402 determines the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field, including:

[0162] Based on the second part of bits in the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined.

[0163] In a possible embodiment, the receiving antenna group corresponding to the first codeword is predefined by a protocol and / or the receiving antenna group corresponding to the second codeword is predefined by a protocol.

[0164] See also Figure 4 , Figure 4 1 is a schematic diagram of the structure of a communication device in an embodiment of the present application. The communication device can be used to perform some or all of the functions of the terminal in the above method embodiment. The device can be a terminal, or a device in a terminal, or a device that can be used in conjunction with a terminal. The communication device can also be a chip system. Figure 4 The communication device shown includes a communication unit 401. The communication unit 401 is used to send and receive data. The communication unit 401 integrates a receiving unit and a sending unit. The communication unit 401 can also be called a transceiver unit. Alternatively, the communication unit 401 can also be split into a receiving unit and a sending unit. Optionally, the communication device also includes a processing unit 402, which is used to process data. Among them:

[0165] A communication unit 401 is configured to measure a downlink reference signal through a first receiving antenna group and a second receiving antenna group to obtain a channel state information CSI measurement result, where the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group;

[0166] The communication unit 401 is further configured to send a CSI report based on the CSI measurement result, where the CSI report carries a rank indication RI;

[0167] Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

[0168] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0169] The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0170] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI corresponding to a first codeword in CQI; the second part includes PMI and CQI corresponding to a second codeword in CQI.

[0171] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0172] The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Alternatively, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0173] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0174] In a possible embodiment, the CSI report further includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

[0175] See also Figure 4 , Figure 41 is a schematic diagram of the structure of a communication device in an embodiment of the present application. The communication device can be used to perform some or all of the functions of the network device in the above method embodiment. The device can be a network device, or a device in a network device, or a device that can be used in combination with a network device. The communication device can also be a chip system. Figure 4 The communication device shown includes a communication unit 401. The communication unit 401 is used to send and receive data. The communication unit 401 integrates a receiving unit and a sending unit. The communication unit 401 can also be called a transceiver unit. Alternatively, the communication unit 401 can also be split into a receiving unit and a sending unit. Optionally, the communication device also includes a processing unit 402, which is used to process data. Among them:

[0176] The communication unit 401 is configured to send a downlink reference signal;

[0177] The communication unit 401 is configured to receive a CSI report, where the CSI report carries a rank indication RI;

[0178] Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group of the terminal, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group of the terminal; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

[0179] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0180] The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0181] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI corresponding to a first codeword in CQI; the second part includes PMI and CQI corresponding to a second codeword in CQI.

[0182] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0183] The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Alternatively, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0184] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0185] In a possible embodiment, the CSI report further includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

[0186] The embodiment of the present application also provides a chip, which can execute the relevant steps of the terminal in the aforementioned method embodiment.

[0187] The chip includes a processor and a communication interface, and the processor is configured to enable the chip to perform the following operations:

[0188] receiving downlink control information, where the downlink control information is used to schedule the first codeword and / or the second codeword;

[0189] Determine a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword;

[0190] According to the downlink control information, the first codeword is received through the receiving antenna group corresponding to the first codeword, and / or the second codeword is received through the receiving antenna group corresponding to the second codeword.

[0191] In a possible embodiment, the downlink control information includes first indication information, where the first indication information indicates a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword; and determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword includes:

[0192] A receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined based on the first indication information.

[0193] In a possible embodiment, when the value of the first indication information is a first value, the receiving antenna group corresponding to the first codeword is a first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is a second receiving antenna group;

[0194] When the value of the first indication information is the second value, the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

[0195] In a possible embodiment, the downlink control information includes an antenna port indication field, where the antenna port indication field is used to indicate an antenna port combination; determining a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword includes:

[0196] A receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword are determined based on the antenna port indication field.

[0197] In a possible embodiment, determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword based on the antenna port indication field includes:

[0198] Based on the antenna port combination indicated by the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined.

[0199] In a possible embodiment, the antenna port indication field includes a first part of bits and a second part of bits, the first part of bits is used to indicate the antenna port combination, and the second part of bits is used to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword;

[0200] Determining a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword based on the antenna port indication field includes:

[0201] Based on the second part of bits in the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined.

[0202] In a possible embodiment, the receiving antenna group corresponding to the first codeword is predefined by a protocol and / or the receiving antenna group corresponding to the second codeword is predefined by a protocol.

[0203] The embodiment of the present application also provides a chip, which can execute the relevant steps of the terminal in the aforementioned method embodiment.

[0204] The chip includes a processor and a communication interface, and the processor is configured to enable the chip to perform the following operations:

[0205] Measuring a downlink reference signal by using the first receiving antenna group and the second receiving antenna group to obtain a channel state information CSI measurement result, where the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group;

[0206] Send a CSI report based on the CSI measurement result, where the CSI report carries a rank indication RI;

[0207] Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

[0208] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0209] The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0210] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI corresponding to a first codeword in CQI; the second part includes PMI and CQI corresponding to a second codeword in CQI.

[0211] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0212] The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Alternatively, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0213] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0214] In a possible embodiment, the CSI report further includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

[0215] The present application also provides a chip that can execute the relevant steps of the network device in the above method embodiment. The chip includes a processor and a communication interface, and the processor is configured to enable the chip to perform the following operations:

[0216] Sending a downlink reference signal;

[0217] receiving a CSI report, where the CSI report carries a rank indication RI;

[0218] Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group of the terminal, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group of the terminal; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

[0219] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0220] The number of RIs is 1. When the rank indicated by one RI is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2. Or, the number of RIs is 2 and the sum of the ranks indicated by two RIs is greater than 4, the number of PMIs is 2, the number of CQIs is 2, and the number of CRIs is 1 or 2.

[0221] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI corresponding to a first codeword in CQI; the second part includes PMI and CQI corresponding to a second codeword in CQI.

[0222] In a possible embodiment, the CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI, and a reference signal resource indication CRI;

[0223] The number of RIs is 1. When the rank indicated by one RI is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2. Alternatively, the number of RIs is 2 and the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of PMIs is 1, the number of CQIs is 1, and the number of CRIs is 1 or 2.

[0224] In a possible embodiment, the CSI report is divided into a first part and a second part, the first part includes CRI, RI, and CQI; the second part includes PMI.

[0225] In a possible embodiment, the CSI report further includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

[0226] See also Figure 5 , Figure 55 is a schematic diagram of the structure of a communication device provided by an embodiment of the present invention. The communication device 500 may include a memory 501 and a processor 502. Optionally, it also includes a communication interface 503. The memory 501, the processor 502 and the communication interface 503 are connected via one or more communication buses. The communication interface 503 is controlled by the processor 502 to send and receive information.

[0227] The memory 501 may include a read-only memory and a random access memory, and provides instructions and data to the processor 502. A portion of the memory 501 may also include a nonvolatile random access memory.

[0228] The communication interface 503 is used to receive or send data.

[0229] The processor 502 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, and optionally, the processor 502 may also be any conventional processor, etc. Among them:

[0230] The memory 501 is used to store program instructions.

[0231] The processor 502 is used to call the program instructions stored in the memory 501.

[0232] The processor 502 calls the program instructions stored in the memory 501 to enable the communication device 500 to execute the method executed by the terminal device or the network device in the above method embodiment.

[0233] like Figure 6 As shown, Figure 6 600 is a schematic diagram of a module device provided in an embodiment of the present application. The module device 600 can execute the relevant steps of the terminal device or network device in the aforementioned method embodiment. The module device 600 includes: a communication module 601, a power module 602, a storage module 603 and a chip 604.

[0234] Among them, the power module 602 is used to provide power to the module device; the storage module 603 is used to store data and instructions; the communication module 601 is used for internal communication of the module device, or for the module device to communicate with external devices; the chip 604 is used to execute the method executed by the terminal device or network device in the above method embodiment.

[0235] It should be noted that Figure 5 and Figure 6 For the contents not mentioned in the corresponding embodiments and the specific implementation methods of each step, please refer to the contents of the method embodiments, which will not be repeated here.

[0236] An embodiment of the present application also provides a computer-readable storage medium, in which instructions are stored. When the computer-readable storage medium is executed on a processor, the method flow of the above method embodiment is implemented.

[0237] The embodiment of the present application also provides a computer program product. When the computer program product runs on a processor, the method flow of the above method embodiment is implemented.

[0238] Regarding the various modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, or hardware modules / units, or they can be partially software modules / units and partially hardware modules / units. For example, for various devices and products applied to or integrated in a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on the integrated processor inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same part of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. The software programs run on the integrated processor inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits. It can be implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in the terminal, the modules / units contained therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits.

[0239] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain operations can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0240] The descriptions of the various embodiments provided in this application can refer to each other, and the descriptions of the various embodiments have different focuses. For parts that are not described in detail in a certain embodiment, refer to the relevant descriptions of other embodiments. For the convenience and simplicity of description, for example, the functions of the various devices and equipment provided in the embodiments of this application and the operations performed can refer to the relevant descriptions of the method embodiments of this application, and the various method embodiments and the various device embodiments can also refer to, combine or quote each other.

[0241] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that: The method comprises: receiving downlink control information, where the downlink control information is used to schedule the first codeword and / or the second codeword; Determine a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword; According to the downlink control information, the first codeword is received through a receiving antenna group corresponding to the first codeword, and / or the second codeword is received through a receiving antenna group corresponding to the second codeword.

2. The method according to claim 1, characterized in that The downlink control information includes first indication information, where the first indication information indicates a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword; The determining the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword includes: A receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword are determined based on the first indication information.

3. The method according to claim 2, characterized in that When the value of the first indication information is a first value, the receiving antenna group corresponding to the first codeword is a first receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is a second receiving antenna group; When the value of the first indication information is a second value, the receiving antenna group corresponding to the first codeword is the second receiving antenna group, and / or the receiving antenna group corresponding to the second codeword is the first receiving antenna group.

4. The method according to claim 1, characterized in that: The downlink control information includes an antenna port indication field, where the antenna port indication field is used to indicate an antenna port combination; and the determining of a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword includes: A receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword are determined based on the antenna port indication field.

5. The method according to claim 4, characterized in that The determining, based on the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword includes: Based on the antenna port combination indicated by the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword is determined.

6. The method according to claim 4, characterized in that The antenna port indication field includes a first part of bits and a second part of bits, the first part of bits is used to indicate the antenna port combination, and the second part of bits is used to indicate the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword; The determining, based on the antenna port indication field, a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword includes: Based on the second part of bits in the antenna port indication field, determine the receiving antenna group corresponding to the first codeword and / or the receiving antenna group corresponding to the second codeword.

7. The method according to claim 1, characterized in that The receiving antenna group corresponding to the first codeword is pre-defined by a protocol and / or the receiving antenna group corresponding to the second codeword is pre-defined by a protocol.

8. A communication method, characterized in that: The method comprises: Measuring a downlink reference signal by using a first receiving antenna group and a second receiving antenna group to obtain a channel state information CSI measurement result, where the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group; Sending a CSI report based on the CSI measurement result, where the CSI report carries a rank indication RI; The number of the RIs is 2, the first RI among the RIs indicates the rank corresponding to the first receiving antenna group, and the second RI among the RIs indicates the rank corresponding to the second receiving antenna group; or, the number of the RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

9. The method according to claim 8, characterized in that The CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI and a reference signal resource indication CRI; The number of the RIs is 1, and when the rank indicated by one RI is greater than 4, the number of the PMIs is 2, the number of the CQIs is 2, and the number of the CRIs is 1 or 2; or, the number of the RIs is 2, and when the sum of the ranks indicated by two RIs is greater than 4, the number of the PMIs is 2, the number of the CQIs is 2, and the number of the CRIs is 1 or 2.

10. The method according to claim 9, characterized in that The CSI report is divided into a first part and a second part, the first part includes the CRI, the RI, and a CQI corresponding to a first codeword in the CQI; the second part includes the PMI and a CQI corresponding to a second codeword in the CQI.

11. The method according to claim 8, characterized in that The CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI and a reference signal resource indication CRI; The number of the RIs is 1, and when the rank indicated by one RI is less than or equal to 4, the number of the PMIs is 1, the number of the CQIs is 1, and the number of the CRIs is 1 or 2; or, the number of the RIs is 2, and when the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of the PMIs is 1, the number of the CQIs is 1, and the number of the CRIs is 1 or 2.

12. The method according to claim 11, characterized in that The CSI report is divided into a first part and a second part, the first part includes the CRI, the RI, and the CQI; the second part includes the PMI.

13. The method according to claim 12, characterized in that The CSI report also includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

14. A communication method, characterized in that: The method comprises: Sending a downlink reference signal; receiving a CSI report, wherein the CSI report carries a rank indication RI; Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group of the terminal, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group of the terminal; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

15. The method according to claim 14, characterized in that The CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI and a reference signal resource indication CRI; The number of the RIs is 1, and when the rank indicated by one RI is greater than 4, the number of the PMIs is 2, the number of the CQIs is 2, and the number of the CRIs is 1 or 2; or, the number of the RIs is 2, and when the sum of the ranks indicated by two RIs is greater than 4, the number of the PMIs is 2, the number of the CQIs is 2, and the number of the CRIs is 1 or 2.

16. The method according to claim 15, characterized in that The CSI report is divided into a first part and a second part, the first part includes the CRI, the RI, and a CQI corresponding to a first codeword in the CQI; the second part includes the PMI and a CQI corresponding to a second codeword in the CQI.

17. The method according to claim 14, characterized in that The CSI report also carries a precoding matrix indication PMI, a channel quality indication CQI and a reference signal resource indication CRI; The number of the RIs is 1, and when the rank indicated by one RI is less than or equal to 4, the number of the PMIs is 1, the number of the CQIs is 1, and the number of the CRIs is 1 or 2; or, the number of the RIs is 2, and when the sum of the ranks indicated by the two RIs is less than or equal to 4, the number of the PMIs is 1, the number of the CQIs is 1, and the number of the CRIs is 1 or 2.

18. The method according to claim 17, characterized in that The CSI report is divided into a first part and a second part, the first part includes the CRI, the RI, and the CQI; the second part includes the PMI.

19. The method according to claim 18, characterized in that The CSI report also includes first indication information, where the first indication information is used to indicate a receiving antenna group corresponding to the PMI and the CQI, and the first indication information is located in the first part or the second part.

20. A communication device, characterized in that: The device comprises: A communication unit, configured to receive downlink control information, wherein the downlink control information is used to schedule the first codeword and / or the second codeword; a processing unit, configured to determine a receiving antenna group corresponding to the first codeword and / or a receiving antenna group corresponding to the second codeword; The communication unit is further configured to receive the first codeword through a receiving antenna group corresponding to the first codeword and / or receive the second codeword through a receiving antenna group corresponding to the second codeword according to the downlink control information.

21. A communication device, characterized in that: The device comprises: a communication unit, configured to measure a downlink reference signal through a first receiving antenna group and a second receiving antenna group to obtain a channel state information CSI measurement result, wherein the CSI measurement result corresponds to the first receiving antenna group and the second receiving antenna group; The communication unit is further configured to send a CSI report based on the CSI measurement result, where the CSI report carries a rank indication RI; The number of the RIs is 2, the first RI among the RIs indicates the rank corresponding to the first receiving antenna group, and the second RI among the RIs indicates the rank corresponding to the second receiving antenna group; or, the number of the RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

22. A communication device, characterized in that: The device comprises: A communication unit, configured to send a downlink reference signal; The communication unit is further configured to receive a CSI report, where the CSI report carries a rank indication RI; Among them, the number of RIs is 2, the first RI in the RI indicates the rank corresponding to the first receiving antenna group of the terminal, and the second RI in the RI indicates the rank corresponding to the second receiving antenna group of the terminal; or, the number of RIs is 1, and there is a corresponding relationship between the RI and the rank corresponding to the first receiving antenna group and the rank corresponding to the second receiving antenna group.

23. A chip, characterized in that: The method comprises a processor and a communication interface, wherein the processor is configured to execute the method according to any one of claims 1 to 19.

24. A module device, characterized in that: The module device includes a communication module, a power module, a storage module and a chip, wherein: The power module is used to provide electrical energy to the module device; The storage module is used to store data and instructions; The communication module is used for internal communication of the module device, or for communication between the module device and an external device; The chip is used to execute the method according to any one of claims 1 to 19.

25. A communication device, characterized in that: The method comprises a memory and a processor, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the method according to any one of claims 1 to 19.

26. A computer-readable storage medium, characterized in that: The computer storage medium stores computer-readable instructions, and when the computer-readable instructions are executed on the communication device, the communication device executes the method according to any one of claims 1 to 19.

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