Channel information transmission method and device

Abstract

The invention provides a channel information transmission method and device, the method can be applied to the field of communication, and the method comprises the following steps: receiving N first reference signals; and sending first report information, the first report information being used for indicating the first X elements with the highest priority obtained according to the first sorting rule in a first channel matrix, the first channel matrix being determined according to the N first reference signals, and both N and X being integers greater than or equal to 2. Through the method, the network equipment can obtain the channel information corresponding to other network equipment and required for calculating the weight through the air interface, so that although the weight is calculated respectively among the network equipment, the weight is equivalent to the CJT weight calculated jointly with a plurality of network equipment, and the CJT transmission performance of the network equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of communications, and more specifically, to a method and device for transmitting channel information. Background Art

[0002] Coherent joint transmission (CJT) is a multi-antenna technology that is commonly used in wireless communication systems, especially in multi-user, multi-cell systems. The main idea of ​​CJT is to improve the received signal to interference plus noise ratio (SINR) of the terminal equipment (UE) and reduce inter-cell interference through technologies such as joint transmission and joint scheduling of multiple network devices. Specifically, when the UE is served by multiple network devices, these network devices can use CJT to make the received signals coherently superimposed at the UE and the interference coherently canceled, thereby improving the network throughput and user experience. In this process, the device can jointly design the transmission weights based on the joint channels from multiple network devices to the UE, and transmit the same data stream to ensure the coherent superposition effect of the received signal on the UE side.

[0003] However, in the scenario of non-ideal backhaul links (BH), the delay in information exchange between multiple network devices through non-ideal BH is relatively large, resulting in the inability to exchange information in real time between multiple network devices, and thus the inability to obtain accurate real-time weights, which seriously affects the effect of CJT transmission. Summary of the invention

[0004] The present application provides a method and apparatus for transmitting channel information, whereby a network device can obtain channel information corresponding to other network devices required for calculating weights through an air interface. In this way, although the weights are calculated separately between network devices, it is equivalent to jointly calculating CJT weights with multiple network devices, thereby improving the performance of CJT transmission of network devices.

[0005] In a first aspect, a method for transmitting channel information is provided, the method comprising: receiving N reference signals; sending first reporting information, wherein the first reporting information is used to indicate the first X elements with the highest priority obtained in a first channel matrix according to a first sorting rule, the first channel matrix being determined based on the N reference signals, and N and X are both integers greater than or equal to 2.

[0006] Optionally, the reference signal may be a channel state information reference signal (CSI-RS).

[0007] Optionally, the above-mentioned channel information transmission method can be executed by a first terminal device, and the first terminal device can be any one of a plurality of terminal devices. In some scenarios, each of the plurality of terminal devices can execute the above-mentioned channel information transmission method.

[0008] In an embodiment of the present application, the first terminal device can send a first reporting information based on the received N reference signals, so that the network device can determine the multi-user weights corresponding to multiple terminal devices (including the first terminal device) based on multiple first reporting information reported by multiple terminal devices. In this way, in a non-ideal backhaul link scenario, the network device can obtain the channel information corresponding to other network devices required to calculate the weights through the air interface. In this way, although the weights are calculated separately between the network devices, it is equivalent to jointly calculating the CJT weights of multiple network devices, thereby improving the performance of the network device for CJT transmission.

[0009] In combination with the first aspect, in some implementations of the first aspect, the N reference signals belong to M groups of reference signals, and the first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

[0010] Optionally, the above-mentioned M groups of reference signals may refer to M CSI-RS resources, and multiple reference signals in each group may correspond to multiple ports in one CSI-RS resource.

[0011] In combination with the first aspect, in some implementations of the first aspect, the corresponding relationship is indicated by a bitmap.

[0012] In combination with the first aspect, in some implementations of the first aspect, the first reporting information further includes: amplitudes and phases corresponding to the X elements.

[0013] In combination with the first aspect, in certain implementations of the first aspect, each of the N reference signals is weighted by a single user weight of a terminal device in a network device in a plurality of network devices among a plurality of terminal devices.

[0014] In combination with the first aspect, in some implementations of the first aspect, the reference signal is a CSI-RS.

[0015] In a second aspect, a method for transmitting channel information is provided, the method comprising: receiving multiple first reporting information sent from multiple terminal devices, one first reporting information among the multiple first reporting information is used to indicate the first X elements with the highest priority obtained according to a first sorting rule in a first channel matrix of one of the multiple terminal devices, the first channel matrix is ​​determined based on N reference signals, and N and X are both integers greater than or equal to 2; determining multi-user weights of the multiple terminal devices based on the multiple first reporting information.

[0016] In an embodiment of the present application, the network device can determine the multi-user weights of multiple terminal devices (including the first terminal device) based on multiple first reporting information sent by multiple terminal devices. In this way, in the scenario of a non-ideal backhaul link, the network device can obtain the channel information corresponding to other network devices required to calculate the weights through the air interface. In this way, although the weights are calculated separately between the network devices, it is equivalent to jointly calculating the CJT weights of multiple network devices, thereby improving the performance of the network device in CJT transmission.

[0017] In combination with the second aspect, in certain implementations of the second aspect, the N reference signals belong to M groups of reference signals, and one of the multiple first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

[0018] In combination with the second aspect, in some implementations of the second aspect, the corresponding relationship is indicated by a bitmap.

[0019] In combination with the second aspect, in some implementations of the second aspect, the first reporting information among the multiple reporting information further includes: amplitudes and phases corresponding to the first X elements.

[0020] In combination with the second aspect, in certain implementations of the second aspect, each of the N reference signals is weighted by a single-user weight of a terminal device among the multiple terminal devices in a network device among the multiple network devices.

[0021] In combination with the second aspect, in some implementations of the second aspect, the reference signal is a CSI-RS.

[0022] In a third aspect, a method for transmitting channel information is provided, the method comprising: receiving Q reporting resource indications and N reference signals; sending qth second reporting information on the qth reporting resource, wherein the qth second reporting information is used to indicate the top X with the highest priority obtained according to the first sorting rule in the qth channel matrix. qelements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q.

[0023] Optionally, the reference signal may be a CSI-RS.

[0024] Optionally, the above-mentioned method for transmitting channel information may be executed by a first terminal device, and the first terminal device may be any one of a plurality of terminal devices. In some scenarios, each of the plurality of terminal devices may execute the above-mentioned method for transmitting channel information.

[0025] In an embodiment of the present application, the first terminal device can send the qth second reporting information on the qth reporting resource based on the received Q reporting resource indications and N reference signals, so that the network device can determine the multi-user weights corresponding to multiple terminal devices (including the first terminal device) based on the qth second reporting information. In this way, in the scenario of a non-ideal backhaul link, the network device can obtain the channel information corresponding to other network devices required to calculate the weights through the air interface. In this way, although the weights are calculated separately between the network devices, it is equivalent to jointly calculating the CJT weights with multiple network devices, thereby improving the performance of the network device for CJT transmission.

[0026] In conjunction with the third aspect, in some implementations of the third aspect, the N reference signals belong to M groups of reference signals, and the qth second reporting information includes: q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

[0027] Optionally, the above-mentioned M groups of reference signals may refer to M CSI-RS resources, and multiple reference signals in each group may correspond to multiple ports in one CSI-RS resource.

[0028] In combination with the third aspect, in certain implementations of the third aspect, the corresponding relationship is indicated by a bitmap.

[0029] In conjunction with the third aspect, in certain implementations of the third aspect, the qth second reporting information further includes: q The amplitude and phase of each element.

[0030] In combination with the third aspect, in certain implementations of the third aspect, the N reference signals are obtained by weighting a single user weight of a terminal device in one of multiple terminal devices in one of multiple network devices.

[0031] In combination with the third aspect, in certain implementations of the third aspect, the N reference signals are N CSI-RSs.

[0032] In a fourth aspect, a method for transmitting channel information is provided, the method comprising: receiving a plurality of second reporting information sent from a plurality of terminal devices, the plurality of second reporting information comprising a terminal device in the plurality of terminal devices receiving a qth second reporting information on a qth reporting resource, the qth second reporting information being used to indicate the first X channels with the highest priority obtained according to a first sorting rule in the qth channel matrix; q elements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, the qth reporting resource belongs to one of the reporting resources indicated by the Q reporting resources, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; based on the multiple second reported information, the multi-user weights of the multiple terminal devices are determined.

[0033] In an embodiment of the present application, the network device can determine the multi-user weights of multiple terminal devices (including the first terminal device) based on multiple second reporting information sent by multiple terminal devices. In this way, in the scenario of a non-ideal backhaul link, the network device can obtain the channel information corresponding to other network devices required to calculate the weights through the air interface. In this way, although the weights are calculated separately between the network devices, it is equivalent to jointly calculating the CJT weights of multiple network devices, thereby improving the performance of the network device in CJT transmission.

[0034] In conjunction with the fourth aspect, in some implementations of the fourth aspect, the N reference signals belong to M groups of reference signals, and the qth second reporting information includes the X q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

[0035] In combination with the fourth aspect, in certain implementations of the fourth aspect, the corresponding relationship is indicated by a bitmap.

[0036] In conjunction with the fourth aspect, in certain implementations of the fourth aspect, the qth second reporting information further includes: the X with the highest priority q The amplitude and phase of each element.

[0037] In combination with the fourth aspect, in certain implementations of the fourth aspect, the N reference signals are obtained by weighting a single user weight of a terminal device among the multiple terminal devices in a network device among the multiple network devices.

[0038] In combination with the fourth aspect, in certain implementations of the fourth aspect, the reference signal is a CSI-RS.

[0039] In a fifth aspect, a channel information transmission device is provided, the device comprising: a receiving unit, a sending unit and a processing unit; the receiving unit is used to receive N reference signals; the processing unit is used to determine first reporting information based on the N reference signals, the first reporting information is used to indicate the first X elements with the highest priority obtained in the first channel matrix according to the first sorting rule, N and X are both integers greater than or equal to 2; the sending unit is used to send the first reporting information.

[0040] In combination with the fifth aspect, in certain implementations of the fifth aspect, the N reference signals belong to M groups of reference signals, and the first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

[0041] In combination with the fifth aspect, in certain implementations of the fifth aspect, the corresponding relationship is indicated by a bit map.

[0042] In combination with the fifth aspect, in some implementations of the fifth aspect, the first reported information further includes: amplitudes and phases corresponding to the X elements.

[0043] In combination with the fifth aspect, in certain implementations of the fifth aspect, the N reference signals are obtained by weighting a single user weight of a terminal device in a network device in a plurality of network devices among a plurality of terminal devices.

[0044] In combination with the fifth aspect, in certain implementations of the fifth aspect, the reference signal is a CSI-RS.

[0045] In a sixth aspect, a channel information transmission device is provided, the device comprising: a receiving unit and a processing unit; the receiving unit is used to receive multiple first reporting information sent from multiple terminal devices, one first reporting information among the multiple first reporting information is used to indicate the first X elements with the highest priority obtained according to a first sorting rule in a first channel matrix of one of the multiple terminal devices, the first channel matrix is ​​determined based on N reference signals, and N and X are both integers greater than or equal to 2; the processing unit is used to determine the multi-user weights of the multiple terminal devices based on the multiple first reporting information.

[0046] In combination with the sixth aspect, in certain implementations of the sixth aspect, the N reference signals belong to M groups of reference signals, and one of the multiple first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

[0047] In combination with the sixth aspect, in certain implementations of the sixth aspect, the corresponding relationship is indicated by a bit map.

[0048] In combination with the sixth aspect, in some implementations of the sixth aspect, the first reporting information among the multiple reporting information further includes: amplitudes and phases corresponding to the X elements.

[0049] In combination with the sixth aspect, in certain implementations of the sixth aspect, the N reference signals are obtained by weighting a single-user weight of a terminal device among the multiple terminal devices in a network device among the multiple network devices.

[0050] In combination with the sixth aspect, in certain implementations of the sixth aspect, the reference signal is a CSI-RS.

[0051] In a seventh aspect, a channel information transmission device is provided, the device comprising: a receiving unit, a sending unit and a processing unit; the receiving unit is used to receive Q reporting resource indications and N reference signals; the processing unit is used to determine the qth second reporting information according to the N reference signals, the qth second reporting information is used to indicate the top X with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; the sending unit is used to send the qth second reporting information on the qth reporting resource.

[0052] In conjunction with the seventh aspect, in some implementations of the seventh aspect, the N reference signals belong to M groups of reference signals, and the qth second reporting information includes: q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

[0053] In combination with the seventh aspect, in certain implementations of the seventh aspect, the corresponding relationship is indicated by a bit map.

[0054] In conjunction with the seventh aspect, in certain implementations of the seventh aspect, the qth second reporting information includes: the X q The amplitude and phase of each element.

[0055] In combination with the seventh aspect, in certain implementations of the seventh aspect, the N reference signals are weighted by single-user weights of a terminal device in a network device in a plurality of network devices among a plurality of terminal devices.

[0056] In combination with the seventh aspect, in certain implementations of the seventh aspect, the reference signal is a CSI-RS.

[0057] In an eighth aspect, a channel information transmission device is provided, the device comprising: a receiving unit and a processing unit; the receiving unit is used to receive multiple second reporting information sent from multiple terminal devices, the multiple second reporting information includes the qth second reporting information received by one of the multiple terminal devices on the qth reporting resource, the qth second reporting information is used to indicate the top X with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, the qth reporting resource belongs to one of the reporting resources indicated by the Q reporting resources, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; the processing unit is used to determine the multi-user weights of the multiple terminal devices according to the multiple second reported information.

[0058] In conjunction with the eighth aspect, in some implementations of the eighth aspect, the N reference signals belong to M groups of reference signals, and the qth second reporting information includes the X q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

[0059] In conjunction with the eighth aspect, in certain implementations of the eighth aspect, the qth second reporting information further includes: q The amplitude and phase of each element.

[0060] In combination with the eighth aspect, in certain implementations of the eighth aspect, each of the N reference signals is weighted by a single-user weight of a network device among the multiple network devices among a terminal device among the multiple terminal devices.

[0061] In combination with the eighth aspect, in certain implementations of the eighth aspect, the reference signal is a CSI-RS.

[0062] In a ninth aspect, a device for transmitting channel information is provided, comprising: at least one processor and a memory, wherein the at least one processor is coupled to the memory and is used to read and execute instructions in the memory, so that the device implements the method in any one of the implementation modes of the first to fourth aspects above.

[0063] In a tenth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program code, and when the computer program code runs on a computer, the computer executes a method in any one of the implementation modes of the first to fourth aspects above.

[0064] In an eleventh aspect, a chip is provided, the chip comprising a circuit, the circuit being used to execute the method in any one of the implementations of the first to fourth aspects above.

[0065] In a twelfth aspect, a computer program product is provided, which includes a computer program. When the computer program is run, the computer executes the method in any one of the implementation modes of the first to fourth aspects above.

[0066] In a thirteenth aspect, a terminal device is provided, comprising: an apparatus in any one of the implementation methods of the first aspect or the third aspect mentioned above.

[0067] In a fourteenth aspect, a network device is provided, comprising: an apparatus in any one of the implementation methods of the second aspect or the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 is a schematic diagram of CJT transmission between base stations provided in an embodiment of the present application;

[0069] Figure 2 This is an application scenario applicable to a method for transmitting channel information provided in an embodiment of the present application;

[0070] Figure 3 It is a system architecture applicable to a method for transmitting channel information provided in an embodiment of the present application;

[0071] Figure 4 is a schematic flow chart of a method for transmitting channel information provided in an embodiment of the present application;

[0072] Figure 5 is a schematic flow chart of another method for transmitting channel information provided in an embodiment of the present application;

[0073] Figure 6 is a schematic diagram of another channel information transmission method provided in an embodiment of the present application;

[0074] Figure 7It is a schematic diagram of BS collecting UE correlation and weight calculation provided by an embodiment of the present application;

[0075] Figure 8 It is a schematic diagram of a channel information transmission device provided in an embodiment of the present application;

[0076] Fig. 9 It is a schematic diagram of another channel information transmission device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0077] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0078] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In the present application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0079] The prefixes such as "first" and "second" used in the embodiments of the present application are only used to distinguish different description objects, and have no limiting effect on the position, order, priority, quantity or content of the described objects. The use of prefixes such as ordinal numbers used to distinguish description objects in the embodiments of the present application does not constitute a limitation on the described objects. For the statement of the described objects, please refer to the description in the context of the claims or embodiments, and the use of such prefixes should not constitute an unnecessary limitation.

[0080] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5G) system or new radio (NR), etc.

[0081] The terminal device in the embodiments of the present application may refer to user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device 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 device in a future 5G network or a terminal device in a future evolved public land mobile communication network (PLMN), etc., and the embodiments of the present application are not limited to this.

[0082] The network device in the embodiments of the present application may be a device for communicating with a terminal device. The network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a future 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited thereto.

[0083] CJT is a multi-antenna technology that is commonly used in wireless communication systems, especially in multi-user, multi-cell systems. The main idea of ​​CJT is to improve the UE's receiving SINR while reducing inter-cell interference through technologies such as joint transmission and joint scheduling of multiple network devices. Specifically, when a UE is served by multiple network devices, these network devices can use joint transmission to make the received signals coherently superimposed at the UE and the interference coherently canceled, thereby improving the network throughput and user experience. In this process, the device can jointly design the transmission weights based on the joint channels from multiple network devices to the UE, and transmit the same data stream to ensure the coherent superposition of the received signals on the UE side.

[0084] The following introduces the technical problems to be solved by this application and the technical solutions adopted.

[0085] like Figure 1 As shown, base station (BS) 1 and BS2 provide services to UE in a CJT manner, where BS1 is a serving base station and BS2 is a cooperative serving base station. At this time, the process of CJT weight design can be: BS1 obtains channel information H1 with UE; BS2 exchanges its channel information H2 with UE to BS1, and BS1 designs CJT weights according to the joint channel [H1 H2]. Finally, BS1 can exchange the weight W2 and data to BS2. After BS2 receives W2 and data, BS1 and BS2 can perform joint transmission. H1 and H2 can represent the downlink channels from BS1 and BS2 to UE respectively, and the joint channel [H1 H2] can be a channel matrix composed of the downlink channel information from BS1 and BS2 to UE; W1 and W2 can represent the BS1 component and the BS2 component in the CJT weight of UE respectively.

[0086] However, the above process requires at least two base station interactions. When BS1 and BS2 are in a non-ideal BH scenario, the delay of BS1 and BS2 interacting through BH is large, and real-time information interaction is impossible. For example, in the (IP radio access network) IPRAN networking scenario, the typical value of BH interaction delay is 4ms, and the typical value of a time slot is 0.5ms or 1ms. Since the weight also needs to be updated in each time slot, Figure 1 The method shown cannot meet the real-time requirements of weight design and affects the CJT transmission effect.

[0087] The embodiments of the present application provide a method and apparatus for transmitting channel information. In a non-ideal BH scenario, a network device can obtain channel information corresponding to other network devices required for calculating weights through an air interface. In this way, although the weights are calculated separately between network devices, it is equivalent to jointly calculating CJT weights with multiple network devices, thereby improving the performance of the network device in performing CJT.

[0088] It should be understood that the base station in the embodiment of the present application may be a type of network equipment, and the two may be used interchangeably.

[0089] Before introducing the channel information transmission method provided by the present application, Figure 2 Take the following as an example to introduce what kind of information needs to be reported through the air interface in order to design the joint CTJ weight in a non-ideal BH scenario. To simplify the description of the problem, Figure 2 In the scenario shown, two base stations BS1 and BS2 serve two UEs, namely UE1 and UE2, through CJT.

[0090] like Figure 2 As shown, in order to design the joint CJT weight, it is first necessary to perform singular value decomposition (SVD) on the joint channels from BS1 and BS2 to UE1 and UE2, as shown in the following formula:

[0091]

[0092]

[0093] Among them, the joint channel [H 11 H 21 ] and [H 12 H 22 ] can represent the number of the BS, and the second digit of the H subscript can represent the number of the UE. 21 represents the downlink channel from BS2 to UE1; U1 and U2 are left singular matrices, ∑1 and ∑2 are diagonal matrices, and the diagonal elements in the diagonal matrices are the singular values ​​of the joint channel matrix; and is the right singular matrix of the joint channel, which can be used as the joint single user (SU) weights of UE1 and UE2 respectively.

[0094] At this time, the multiple user (MU) weights of UE1 and UE2 can be respectively as follows:

[0095]

[0096]

[0097] Among them, λ1 and λ2 represent the regularization factors of BS1 and BS2 for MU weights respectively. The introduction of this factor is mainly to ensure that the calculated weights meet certain constraints, such as the total transmission power constraint of the base station; and The first digit of the W subscript in the BS may represent the BS number, and the second digit of the W subscript may represent the UE number. 11 Represents the component of BS1 in the CJT weight of UE1.

[0098] It should be understood that the single-user weight may refer to the weight calculated based only on the channel of a certain user (terminal device), and the general goal is to make the received signal of a certain user the strongest; the joint single-user weight may refer to the weight calculated by the joint channel from multiple network devices to a certain UE; the multi-user weight may refer to the weight calculated by jointly considering the channels of multiple users, suppressing interference from other users while making the received signal of each user as large as possible.

[0099] Among them, the block matrix is ​​defined:

[0100]

[0101] This matrix can represent the covariance matrix of the SU weights corresponding to all UEs jointly served by BS1 and BS2. For the above formula, taking the CJT weight calculation of UE1 as an example, W 11 and W 21 They can be calculated by the following formulas:

[0102]

[0103]

[0104] Among them, W 11 and W 21 can be obtained by distributed computing by BS1 and BS2 respectively (i.e., BS1 calculates W 11 , calculated by BS2 21 ), it can be seen from the above formula that for the part calculated by BS1, the cross information involving BS2 is and That is, they are the autocorrelation of UE1 with respect to BS2 channel and the mutual correlation between UE1 and UE2 with respect to BS2 channel; for the part calculated by BS2, the cross information involving BS1 is and That is, the autocorrelation of UE1 on BS1 channel and the mutual correlation between UE1 and UE2 on BS1 channel. Based on the above analysis, it is necessary to report the cross information corresponding to other network devices through the air interface, that is, each UE needs to measure and report the correlation between itself and other UEs on the base station channel. Among them, other UEs can refer to UEs served by the same network device.

[0105] Figure 3 This is a system architecture applicable to a channel information transmission method provided in an embodiment of the present application.

[0106] like Figure 3 As shown, the network equipment and terminal equipment involved in the embodiments of the present application may include: a radio resource control (RRC) signaling interaction module, a media access control (MAC) signaling interaction module and a physical layer (PHY) signaling interaction module.

[0107] Among them, the RRC signaling interaction module can be used to receive or send RRC information to manage and control key parameters and resources related to the wireless network. The MAC signaling interaction module can be used to receive or send MAC-CE signaling to ensure effective communication between network devices and terminal devices. The PHY signaling interaction module can be used to receive or send: uplink / downlink control signaling and uplink / downlink control data, and transmit reference signals (e.g., CSI-RS) to measure channel state information (CSI).

[0108] Specifically in the present application, the network device can send RRC signaling to the terminal device, and the RRC signaling can be used to indicate the reference signal resources for correlation measurement of the terminal device, and the PUCCH or PUSCH resources used for correlation reporting by the terminal device. The network device can also send a downlink reference signal (for example, CSI-RS) to the terminal device. After the terminal device receives the CSI-RS sent by the network device, it can measure the channel correlation with other terminal devices. After the measurement is completed, the terminal device can report the correlation of the terminal device to the network device via PUSCH or PUCCH, thereby facilitating the network device to perform CJT joint weight design and communication.

[0109] Figure 4 It is a schematic flowchart of a channel information transmission method provided in an embodiment of the present application. Method 400 may include steps S401 to S402.

[0110] S401: A first terminal device receives N reference signals, where N is an integer greater than or equal to 2.

[0111] Optionally, the reference signal may be a CSI-RS. It should be noted that the following description is made by taking the reference signal being a CSI-RS as an example, and the present application does not specifically limit the reference signal, and the reference signal may also be other reference signals such as a demodulation reference signal (DMRS).

[0112] The N CSI-RSs belong to M groups of CSI-RSs, M is an integer greater than or equal to 2, and N is an integer greater than or equal to M.

[0113] Optionally, the above-mentioned M groups of CSI-RS may refer to M CSI-RS resources, and multiple CSI-RS in each group may correspond to multiple ports in one CSI-RS resource.

[0114] Exemplarily, the M groups of CSI-RS may come from M network devices, i.e., each network device may send a group of CSI-RS; or, the M groups of CSI-RS may come from less than M network devices, i.e., these network devices each send one or more groups of CSI-RS, and a total of M groups of CSI-RS are sent. Figure 4 It shows that the first terminal device receives a total of N CSI-RS sent from the first network device and at least one collaborative network device.

[0115] Optionally, each CSI-RS in each group of CSI-RS may be weighted by a single-user weight of a certain terminal device among multiple terminal devices at a certain network device. It can also be understood that each CSI-RS in each group of CSI-RS may be weighted by a component of a joint single-user weight of a certain terminal device among multiple terminal devices at a certain network device.

[0116] For example, in a scenario where there are two network devices (including: a first network device and a second network device) and two terminal devices (including a first terminal device and a second terminal device), and each terminal device transmits only one data stream, each network device sends a set of CSI-RS, and each set of reference signals includes two CSI-RS. This scenario can also correspond to Figure 2 In the scenario, the two network devices can be Figure 2 In the figure, the two terminal devices may be BS1 and BS2, and the two terminal devices may be UE1 and UE2.

[0117] The first terminal device can receive 2 groups of 4 CSI-RS, the first group of CSI-RS includes 2 CSI-RS, and the first CSI-RS in the first group is composed of the first terminal device's joint single-user weight in the first network device component V 11Weighted; the second CSI-RS in the first group is composed of the joint single-user weight of the second terminal device in the first network device component V 12 Weighted; the second group of CSI-RS includes 2 CSI-RS, the first CSI-RS in the second group is composed of the joint single-user weight of the first terminal device in the second network device component V 21 Weighted; the second CSI-RS in the second group is composed of the joint single-user weight of the second terminal device in the second network device component V 22 Weighted. Among them, the above V 11 、V 12 、V 21 and V 22 The same column in the first channel matrix.

[0118] In this example, the first terminal device can receive 2 CSI-RS resources, each of which can include two CSI-RS ports, wherein the two CSI-RS ports on the first CSI-RS resource can be respectively used for V 11 and V 12 Weighted, the two CSI-RS ports on the second CSI-RS resource can be respectively 21 and V 22 Weighted.

[0119] S402, the first terminal device sends first reporting information.

[0120] Exemplarily, the first terminal device sends first reporting information to multiple network devices participating in CJT (including: the first network device and at least one collaborative network device).

[0121] The first reporting information is used to indicate the first X elements with the highest priority obtained according to the first sorting rule in the first channel matrix, where the first channel matrix is ​​determined according to N CSI-RSs, and X is an integer greater than or equal to M.

[0122] The first terminal device receives M groups of N CSI-RS, and the first reporting information may include the correspondence between the first X elements with the highest priority and the N CSI-RS in the M groups. That is, a certain element in the first X elements with the highest priority corresponds to a certain CSI-RS in a certain group of the M groups of CSI-RS, or it can also be called the position of the X elements in the first channel matrix.

[0123] Optionally, the above correspondence may be indicated using a bitmap.

[0124] In a possible implementation, the first terminal device transmits a data stream, in which case the bitmap includes N bits, each bit may correspond to one of the N CSI-RSs, and the corresponding bit in the N bits is set to 1 (or 0) to indicate that the reporting information includes the correlation measured by the corresponding CSI-RS port, which can also be understood as the correlation measured from the CSI-RS port being one of the top X elements with the highest priority obtained according to the first sorting rule; conversely, the corresponding bit in the N bits is set to 0 (or 1) to indicate that the reporting information does not include the correlation measured by the corresponding CSI-RS port, which can also be understood as the correlation measured from the CSI-RS port is not within the range of the top X elements with the highest priority obtained according to the first sorting rule. Exemplarily, the measured correlations are sorted according to energy size, and a preset number of elements with the highest energy are taken, and the bits corresponding to these elements are set to 1; the bits corresponding to the remaining elements are set to 0.

[0125] Among them, the bit map can be arranged from low to high according to the resource identifier (identity, ID). For example, the first terminal device receives 3 CSI-RS resources, each CSI-RS resource includes 2 CSI-RS ports, and the bit map can contain 6 bits. The first 2 bits are used to indicate whether the elements measured by the two ports in the first CSI-RS resource are reported, the middle two bits of the bit map are used to indicate whether the elements measured by the two ports in the second CSI-RS resource are reported, and the last two bits of the bit map are used to indicate whether the elements measured by the two ports in the third CSI-RS resource are reported.

[0126] In another possible implementation, the first terminal device transmits v data streams, in which case the bit map may include N×v bits, and the corresponding bit among the N×v bits is set to 1 (or 0) to indicate that the reported information includes the correlation measured by the corresponding CSI-RS port and corresponding to the corresponding data stream, and conversely, the corresponding bit among the N×v bits is set to 0 (or 1) to indicate that the reported information does not include the correlation measured by the corresponding CSI-RS port and corresponding to the corresponding data stream.

[0127] Among them, the bit map can be arranged from low to high according to the resource ID. For example, the first terminal device transmits 2 data streams, and the first terminal device receives 2 CSI-RS resources. Each CSI-RS resource includes 2 CSI-RS ports. The bit map can contain 8 bits. The first and second bits are respectively used to indicate whether the correlation measured at the first port of the first CSI-RS resource of the two data streams of the first terminal device is reported, the third and fourth bits are respectively used to indicate whether the correlation measured at the second port of the first CSI-RS resource of the two data streams of the first terminal device is reported, the fifth and sixth bits are respectively used to indicate whether the correlation measured at the first port of the second CSI-RS resource of the two data streams of the first terminal device is reported, and the seventh and eighth bits are respectively used to indicate whether the correlation measured at the second port of the second CSI-RS resource of the two data streams of the first terminal device is reported.

[0128] Optionally, the first reporting information includes: amplitudes and phases corresponding to the first X elements with the highest priority.

[0129] In a possible implementation, the first channel matrix can be understood as being used to indicate channel correlations between multiple terminal devices and the first terminal device regarding M network devices; the first reporting information is used to indicate the top X elements with the highest priority obtained in the first channel matrix according to the first sorting rule, which can be understood as: the first reporting information is used to indicate partial or full correlations among the channel correlations between multiple terminal devices and the first terminal device regarding M network devices, and the multiple terminal devices include the first terminal device.

[0130] For example, in a scenario of two network devices (including: a first network device and a second network device) and two terminal devices (including a first terminal device and a second terminal device), the first channel matrix may include part or all of the following correlations: the channel autocorrelation of the first terminal device with respect to the first network device, denoted as The channel correlation between the first terminal device and the second terminal device with respect to the first network device is denoted as The channel autocorrelation of the first terminal device with respect to the second network device is denoted as and the channel correlation between the first terminal device and the second terminal device regarding the second network device, denoted as The first terminal device can select and The first X elements with the highest priority are selected as the first reporting information and reported.

[0131] Optionally, the number of elements in the first channel matrix may be v×N, where v is the number of data streams that can be transmitted by the first terminal device.

[0132] In a possible implementation, the first sorting rule may be to arrange the N CSI-RSs in descending order of energy according to correlations measured therefrom.

[0133] In a possible implementation, each of the multiple terminal devices can transmit a data stream. In this case, the first sorting rule can be and Arrange them in descending order of energy. For example, when X=4, the first terminal device can and All are reported; when X=3, the first terminal device can and Select the three with the largest energy for reporting.

[0134] In another implementation, each of the multiple terminal devices can transmit multiple data streams, and the single-user weight of the terminal device can have multiple columns, each of which can be used to weight a certain CSI-RS port. For example, the first terminal device transmits 2 data streams, and the second terminal device transmits 3 data streams. At this time, the first terminal device receives 2 groups of 5 reference signals. The first 2 CSI-RS in the first group can be obtained by the single-user weight of the first terminal device in the component V of the first network device. 11 By measuring the above two CSI-RS, we can get The last three CSI-RSs in the first group may be obtained by the single-user weight of the second terminal device in the component V of the first network device. 12 By measuring the above three CSI-RS, we can get The first two CSI-RSs in the second group may be composed of the single-user weight of the first terminal device and the component V of the second network device. 21 By measuring the above two CSI-RS, we can get The last three CSI-RS in the second may be a component V of the second network device by the single user weight of the second terminal device. 22 By measuring the above three CSI-RS, we can get At this time, the first terminal device can obtain the first channel matrix It includes 4 sub-matrices in total. Among them, and is a 2×2 matrix, and is a 2×3 matrix. The i-th row and j-th column element of each submatrix represents the correlation between the i-th data stream and the j-th data stream of a certain network device channel between two terminal devices. For example, The i-th row and j-th column element of represents the correlation between the i-th data stream of the first terminal device and the j-th data stream of the second terminal device with respect to the first network device channel. The first terminal device selects the first X elements with the highest priority from all elements of the four sub-matrices according to the first sorting rule as the first reporting information and reports it.

[0135] In a possible implementation, the size of X can be configured by the network device, that is, the first terminal device can receive configuration information sent by the network device and determine the specific value of X based on the configuration information, so that the network device can control the reported resource overhead of the terminal device.

[0136] For example, the value of X can be configured through RRC, which can be sent down together with the reported resources, or can be configured separately, and the value of X can be αN×v. Exemplarily, the value of α can be 1, 0.75, 0.5 or 0.25; v represents the number of data streams transmitted by the first terminal device.

[0137] Steps S401 to S402 introduce the specific process of the first terminal device sending the first reporting information. Similarly, other terminal devices in the plurality of terminal devices may also send the first reporting information to the network device participating in the CJT. The specific reporting process will be combined with Figure 6 and Figure 7 I will not go into details here.

[0138] When multiple terminal devices each send a first reporting information, the network device can determine the multi-user weights of multiple terminal devices (including the first terminal device) based on the received multiple first reporting information. In this way, in the scenario of non-ideal backhaul link, the network device can obtain the channel information corresponding to other network devices required for calculating the weight through the air interface. In this way, although the weight is calculated separately between the network devices, it is equivalent to the joint calculation of CJT weights by multiple network devices, thereby improving the performance of the network device in CJT transmission.

[0139] Figure 5 It is a schematic flowchart of a channel information transmission method provided in an embodiment of the present application. Method 500 may include steps S501 to S502.

[0140] S501: A first terminal device receives Q reporting resource indications and N reference signals, where N is an integer greater than or equal to 2.

[0141] Optionally, the reference signal is a CSI-RS. It should be noted that the following description is made by taking the reference signal being a CSI-RS as an example, and the present application does not specifically limit the reference signal, and the reference signal may also be other reference signals such as a DMRS.

[0142] The N CSI-RSs may belong to M groups of CSI-RSs, where M is an integer greater than or equal to 2, and N is an integer greater than or equal to M.

[0143] Optionally, the above-mentioned M groups of CSI-RS may refer to M CSI-RS resources, and multiple CSI-RS in each group may correspond to multiple ports in one CSI-RS resource; and the Q reporting resource indications may be configured by Q network devices.

[0144] S502, the first terminal device sends the qth second reporting information to the corresponding network device on the qth reporting resource.

[0145] The qth second reporting information may be used to indicate the top X channels with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements, the qth channel matrix may be determined according to some CSI-RSs in the N CSI-RSs, and q is a positive integer less than or equal to Q.

[0146] Among them, the above-mentioned corresponding network equipment can indicate the CSI-RS resources used for the first terminal device to measure and determine the qth channel matrix, and the CSI-RS resources correspond to a part of M groups of N CSI-RSs.

[0147] For example, in a scenario of two network devices (including a first network device and a second network device) and two reporting resource indications, step S502 can be expressed as: the first terminal device sends the first second reporting information to the first network device on the first reporting resource, and sends the second second reporting information to the second network device on the second reporting resource, the first second reporting information is used to indicate the first X1 elements with the highest priority obtained in the first channel matrix according to the first sorting rule, and the second second reporting information is used to indicate the first X2 elements with the highest priority obtained in the second channel matrix according to the first sorting rule.

[0148] In a possible implementation, when N CSI-RSs belong to M groups of CSI-RSs, the qth second reporting information includes: the first X highest priority in the qth channel matrix q The correspondence between elements and M groups of N CSI-RS.

[0149] Optionally, the above correspondence may be indicated using a bit map.

[0150] Optionally, the qth second reporting information includes: the top x highest priority q The amplitude and phase of each element.

[0151] In a possible implementation, the qth channel matrix can be understood as being used to indicate the channel correlation between multiple terminal devices and the first terminal device, about Q-1 network devices, where the Q-1 network devices do not include the network device corresponding to the qth reporting resource. The qth second reporting information can be used to indicate the top X with the highest priority obtained according to the first sorting rule in the qth channel matrix. q The qth element can be understood as: the qth second reporting information is used to indicate all or part of the channel correlations of multiple terminal devices and the first terminal device regarding Q-1 network devices, and the multiple terminal devices include the first terminal device.

[0152] For example, in a scenario of two network devices (including: a first network device and a second network device) and two terminal devices (including a first terminal device and a second terminal device), the first channel matrix may include part or all of the following correlations: the channel autocorrelation of the first terminal device with respect to the second network device, denoted as and the channel correlation between the first terminal device and the second terminal device about the second network device, denoted as The second channel matrix may include part or all of the following correlations: the channel autocorrelation of the first terminal device with respect to the first network device, denoted as The channel correlation between the first terminal device and the second terminal device with respect to the first network device is denoted as

[0153] For example, when the first terminal device sends the first second reporting information on the first reporting resource, that is, and The first terminal device sends the second second reporting information on the second reporting resource, that is, and When , the first channel matrix can be The second channel matrix can be

[0154] In addition, in another implementation, each of the multiple terminal devices may transmit multiple data streams, that is, the SU weight of each terminal device may have multiple columns, and each column may be used to weight a certain CSI-RS port.

[0155] Optionally, X q It may be indicated by RRC, and may be configured together with the qth reporting resource, or may be configured separately.

[0156] Steps S501 to S502 introduce the specific process of the first terminal device sending the qth second reporting information on the qth reporting resource. Similarly, other terminal devices in the plurality of terminal devices may also send a plurality of different second reporting information to the corresponding network device on different reporting resources. The specific reporting process will be combined with Figure 6 and Figure 7 I will not go into details here.

[0157] When multiple terminal devices each send the qth second reporting information in the qth reporting resource, the network device can determine the multi-user weights of multiple terminal devices (including: the first terminal device) based on the received multiple second reporting information. In this way, the network device can obtain the channel information corresponding to other network devices required for calculating the weight through the air interface. In this way, although the weight is calculated separately between the network devices, it is equivalent to jointly calculating the CJT weight by multiple network devices, thereby improving the performance of the network device in CJT transmission.

[0158] Combine the following Figure 6 to Figure 7 Method 400 and method 500 are described in detail.

[0159] like Figure 6 As shown, BS1 and BS2 can jointly provide services for UE1, UE2 and UE3. The M network devices in method 400 or method 500 may include BS1 and BS2, and the multiple terminal devices in method 400 and method 500 may include UE1, UE2 and UE3.

[0160] First, BS1 and BS2 may obtain SU weights of all UEs. In one implementation, BS1 and BS2 may send CSI-RS without precoding, and each UE (including UE1, UE2, and UE3) may estimate the joint channel and report the SU weights obtained by SVD decomposition to BS1 and BS2. Taking UE1 (which may be the first terminal device in method 400 or method 500) as an example, UE1 may estimate the joint channel [H 11 H 21 ], the SU weights obtained by SVD decomposition The component V 11 Report to BS1 and convert the component V 21 In another implementation, after UE1 sends a sounding reference signal (SRS), BS1 and BS2 can estimate H 11 and H 21 , and then get V 11 and V21 .

[0161] Then, BS1 and BS2 may send a precoded CSI-RS (which may be one of the reference signals in method 400 and method 500), wherein the precoded CSI-RS may be determined based on the SU weights of all UEs cooperating between base stations. Specifically, BS1 may set the SU weights V of UE1 to UE3 to 11 、V 12 and V 13 As precoding, it is loaded on different CSI-RS ports (which may correspond to three CSI-RS in a group of CSI-RS in method 400 and method 500). Similarly, BS2 may load the SU weights V of UE1 to UE3. 21 、V 22 and V 23 The precoding is loaded on different CSI-RS ports (which may correspond to three CSI-RSs in another group of CSI-RSs in method 400 and method 500).

[0162] After receiving the precoded CSI-RS, the UE can perform a correlation measurement of the terminal device, such as the correlation between UE1 and UE2 with respect to BS1. For example, UE1 can measure the equivalent channel H on the corresponding CSI-RS port. 11 V 12 , and then process the above equivalent channel according to U1Σ1 obtained in the process of SU weight acquisition to obtain the channel correlation. Specifically, UE1 can use the equivalent channel measured by the inverse left multiplication of U1Σ1, that is, the correlation can be obtained In the same way, UE1 can measure the correlation measurement results of all interfering UEs under BS1 and BS2.

[0163] After completing the correlation measurement, the UE can report the correlation of the neighboring station. Taking UE1 as an example, UE1 can report the correlation of each UE with respect to BS2 to BS1, including: and At the same time, UE1 can report the relevance of each UE to BS1 to BS2, including: and In method 400, the above example may correspond to X=6, that is, the first terminal device needs to report all correlations to the two network devices. In method 500, the above example may correspond to the first network device and the second network device respectively configuring a reporting resource, and configuring X1=X2=3, and the first terminal device reports to the first network device and The first terminal device reports to the second network device and

[0164] Similarly, UE2 and UE3 may also perform similar correlation reporting. The first reporting information in method 400 or the qth second reporting information in method 500 may include the channel correlation of each UE with respect to BS1, or the channel correlation of each UE with respect to BS2.

[0165] Combine the following Figure 7 The present invention introduces a method for calculating multi-user weights after the BS collects the correlation reported by each UE.

[0166] Figure 7 BS1 calculates the weights W from BS1 to UE1, UE2 and UE3 according to the correlation reported by each UE. 11 , W 12 and W 13 Take an example for explanation, wherein BS1 may be the first network device in method 400 and method 500 .

[0167] BS1 can summarize the collected UE correlations as follows: Figure 7 As shown in the matrix, in the matrix, the correlations reported by UE1, UE2 and UE3 constitute the columns of the matrix, and when calculating the weights corresponding to UE1, UE2 and UE3, they can be taken out and applied row by row.

[0168] In an embodiment of the present application, in a scenario of a non-ideal backhaul link, BS1 and BS2 can determine the multi-user weights corresponding to UE1 to UE3 without real-time information interaction, thereby improving the performance of CJT transmission between BS1 and BS2.

[0169] The following specifically introduces a communication scenario in which multiple base stations jointly serve multiple terminal devices. Method 400 and method 500 can be applied in this scenario.

[0170] In this scenario, assuming that there are K UEs and B BSs, where K and B are positive integers, the following definition can be made:

[0171] (1) For UE k, the set of base station numbers that provide CJT services is is a subset of the BS set {1,2,…,B}. The M network devices in method 400 and method 500 can be represented as

[0172] (2) For BS b, the set of UEs it serves is is a subset of the UE set {1,2,…,K}, if BS Then UE

[0173] (3) It can represent the set of all cooperative UEs in the UE served by BS b. If UE In addition to BS b, other BSs also serve UE k, wherein the multiple terminal devices in method 400 and method 500 can be represented as

[0174] Based on the above definition of symbols, if BS Then the weight sent by BS b to UE k can be expressed as:

[0175]

[0176] From the above formula we can get:

[0177] In the stage of sending precoded CSI-RS, BS b needs to use different ports or CSI-RS resources to load The weights of all UEs in BS b, that is, v bk ,in For UE k, it will receive data from other serving base stations. The sent precoded CSI-RS. If UE k and UE All are collections , then UE k needs to report to BS b At the same time, you need to report to BS Report

[0178] In the above process, the base station side can configure measurement and reporting resources for each UE, wherein the same base station can use different CSI-RS resources to carry the precoded CSI-RS corresponding to different UEs, different base stations can use different CSI-RS resources to carry the precoded CSI-RS, or the same base station uses a combination of different CSI-RS resources and port groups to carry the precoded CSI-RS corresponding to different UEs, and different base stations can use different CSI-RS resources to carry the precoded CSI-RS. Among them, in the same CSI-RS resource mentioned above, different UEs can be represented by different port groups. In addition, in order to save reporting overhead, the base station can configure the maximum number of correlations that the UE can report (i.e., corresponding to X in method 400), and accordingly, the UE can report according to the maximum number of correlations that can be reported configured by the base station.

[0179] It should be understood that in the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the various embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form new embodiments according to their internal logical relationships.

[0180] The embodiment of the present application also provides a device for implementing any of the above methods, and the device includes a unit corresponding to executing each step in implementing any of the above methods.

[0181] Figure 8 8 is a schematic diagram of a channel information transmission device 800 provided in an embodiment of the present application. The device 800 may include a receiving unit 810, a sending unit 820 and a processing unit 830. The receiving unit 810 is used to receive instructions and / or data, and the sending unit 820 is used to send instructions and / or data. The receiving unit 810 and the sending unit 820 may also be referred to as a communication interface, a communication unit or a transceiver unit. The processing unit 830 is used to perform data processing so that the device 800 implements the aforementioned channel information transmission method.

[0182] Optionally, the device 800 further includes a storage unit, which is used to implement a corresponding storage function and store corresponding instructions and / or data.

[0183] As a design, the device 800 can execute the actions performed by any terminal device in the above method embodiments.

[0184] In one possible implementation, the device 800 includes: a receiving unit 810, a sending unit 820 and a processing unit 830; the receiving unit 810 is used to receive N reference signals; the processing unit 830 is used to determine first reporting information based on the N reference signals, and the first reporting information is used to indicate the first X elements with the highest priority obtained in the first channel matrix according to the first sorting rule; the sending unit 820 is used to send the first reporting information, wherein N and X are integers greater than or equal to 2.

[0185] In a possible implementation manner, N reference signals belong to M groups of reference signals, and the first reporting information includes: a correspondence between X elements and M groups of N reference signals, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

[0186] In a possible implementation, the corresponding relationship is a bit map.

[0187] In a possible implementation manner, the first reporting information further includes: amplitudes and phases corresponding to the X elements.

[0188] In a possible implementation manner, the N reference signals are obtained by weighting a single-user weight of a terminal device among multiple terminal devices in a network device among multiple network devices.

[0189] In a possible implementation manner, the reference signal is a CSI-RS.

[0190] In a possible implementation, the apparatus 800 includes: a receiving unit 810, a sending unit 820, and a processing unit 830; the receiving unit 810 is used to receive Q reporting resource indications and N reference signals; the processing unit 830 is used to determine the qth second reporting information according to some reference signals in the N reference signals, and the qth second reporting information is used to indicate the top X with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements; N and X q are all integers greater than or equal to 2, and q is less than or equal to Q.

[0191] In a possible implementation, N reference signals belong to M groups of reference signals, and the qth second reporting information includes: X q The corresponding relationship between the elements and the M groups of N reference signals, M is greater than or equal to 2, N and X q Greater than or equal to M.

[0192] In a possible implementation, the corresponding relationship is a bit map.

[0193] In a possible implementation, the qth second reporting information further includes: X q The amplitude and phase of each element.

[0194] In a possible implementation manner, the N reference signals are obtained by weighting a single-user weight of a terminal device among multiple terminal devices in a network device among multiple network devices.

[0195] In a possible implementation, the reference signal is N CSI-RSs.

[0196] As a design, the device 800 can execute the actions performed by any network device in the above method embodiments.

[0197] In one possible implementation, the apparatus 800 includes: the apparatus includes: a receiving unit 810 and a processing unit 830; the receiving unit 810 is used to receive multiple first reporting information sent from multiple terminal devices, one first reporting information among the multiple first reporting information is used to indicate the first X elements with the highest priority obtained according to a first sorting rule in a first channel matrix of a terminal device among the multiple terminal devices, the first channel matrix is ​​determined based on N reference signals, and N and X are both integers greater than or equal to 2; the processing unit 830 is used to determine multi-user weights of the multiple terminal devices based on the multiple first reporting information.

[0198] In a possible implementation, N reference signals belong to M groups of reference signals, and one of the multiple first reporting information includes: a correspondence between the first X elements with the highest priority and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

[0199] In a possible implementation manner, one of the multiple first reporting information further includes: amplitudes and phases corresponding to the X elements.

[0200] In a possible implementation, the corresponding relationship is a bit map.

[0201] In a possible implementation manner, the N reference signals are obtained by weighting a single-user weight of a terminal device among multiple terminal devices in a network device among multiple network devices.

[0202] In a possible implementation, the N reference signals are N CSI-RSs.

[0203] In a possible implementation, the apparatus 800 includes: a receiving unit 810 and a processing unit 830; the receiving unit 810 is configured to receive a plurality of second reporting information sent from a plurality of terminal devices, wherein the plurality of second reporting information includes the qth second reporting information received by a terminal device in the plurality of terminal devices on the qth reporting resource, and the qth second reporting information is used to indicate the top X with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, the qth reporting resource belongs to the reporting resource indicated by the Q reporting resources, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; the processing unit 830 is used to determine the multi-user weights of multiple terminal devices according to the multiple second reported information.

[0204] In a possible implementation, N reference signals belong to M groups of reference signals, the qth second reporting information includes a correspondence between X elements and N first reference signals in the M groups, M is greater than or equal to 2, and N and X q Greater than or equal to M.

[0205] In a possible implementation, the corresponding relationship is a bit map.

[0206] In a possible implementation, the qth second reporting information further includes: X q The amplitude and phase of each element.

[0207] In a possible implementation manner, the N reference signals are obtained by weighting a single-user weight of a terminal device among multiple terminal devices in a network device among multiple network devices.

[0208] In a possible implementation manner, the reference signal is a CSI-RS.

[0209] Fig. 9 It is a schematic diagram of another channel information transmission device 900 provided in an embodiment of the present application.

[0210] The device 900 includes: a memory 910, a processor 920, and a communication interface 930. The memory 910, the processor 920, and the communication interface 930 are connected through an internal connection path, the memory 910 is used to store instructions, and the processor 920 is used to execute the instructions stored in the memory 910 to control the communication interface 930 to obtain information, or to enable the device 900 to implement the above-mentioned channel information transmission method. Optionally, the memory 910 can be coupled to the processor 920 through an interface, or can be integrated with the processor 920.

[0211] It should be noted that the communication interface 930 uses a transceiver device such as, but not limited to, a transceiver. The communication interface 930 may also include an input / output interface.

[0212] The processor 920 stores one or more computer programs, and the one or more computer programs include instructions. When the instructions are executed by the processor 920, the apparatus 900 executes the channel information transmission method in the above-mentioned embodiments.

[0213] In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 920 or an instruction in the form of software. The method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor for execution, or a combination of hardware and software modules in the processor for execution. The software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 910, and the processor 920 reads the information in the memory 910 and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0214] Optionally, Fig. 9 The communication interface 930 in the embodiment can realize Figure 8 The receiving unit 810 and the sending unit 820 in Fig. 9 The processor 920 in the embodiment can implement Figure 8 The processing unit 830 in.

[0215] The embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a program code, and when the computer program code is executed on a computer, the computer executes the above Figures 1 to 7 Any of the methods in .

[0216] The present application also provides a computer program product, which includes a computer program. When the computer program is executed, the computer executes the above Figures 1 to 7 Any of the methods in .

[0217] The present application also provides a chip, including: a circuit, the circuit is used to execute the above Figures 1 to 7 Any of the methods in .

[0218] The present application also provides a terminal device, including Figure 8 or Fig. 9 A device for transmitting any type of channel information.

[0219] The present application also provides a network device, including Figure 8 or Fig. 9 A device for transmitting any type of channel information.

[0220] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0221] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0222] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0223] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0224] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0225] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0226] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for transmitting channel information, characterized in that: The method comprises: Receiving N reference signals; Send first reporting information, where the first reporting information is used to indicate the first X elements with the highest priority obtained in the first channel matrix according to the first sorting rule, where the first channel matrix is ​​determined according to the N reference signals, and N and X are both integers greater than or equal to 2.

2. The method according to claim 1, characterized in that The N reference signals belong to M groups of reference signals, and the first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

3. The method according to claim 2, characterized in that The corresponding relationship is indicated by a bitmap.

4. The method according to claim 2 or 3, characterized in that The first reporting information also includes: amplitudes and phases corresponding to the X elements.

5. The method according to any one of claims 1 to 4, characterized in that: Each of the N reference signals is obtained by weighting a single user weight of a terminal device in a network device in a plurality of network devices.

6. The method according to any one of claims 1 to 5, characterized in that: The reference signal is a channel state information reference signal CSI-RS.

7. A method for transmitting channel information, characterized in that: The method comprises: Receiving multiple first reporting information sent from multiple terminal devices, one of the multiple first reporting information is used to indicate the first X elements with the highest priority obtained according to a first sorting rule in a first channel matrix of one of the multiple terminal devices, where the first channel matrix is ​​determined according to N reference signals, and N and X are both integers greater than or equal to 2; Determine multi-user weights of the multiple terminal devices according to the multiple first reporting information.

8. The method according to claim 4, characterized in that The N reference signals belong to M groups of reference signals, and one first reporting information among the multiple first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

9. The method according to claim 8, characterized in that The corresponding relationship is indicated by a bitmap.

10. The method according to claim 8 or 9, characterized in that The first reporting information among the multiple reporting information further includes: amplitudes and phases corresponding to the first X elements.

11. The method according to any one of claims 7 to 10, characterized in that Each of the N reference signals is obtained by weighting a single-user weight of a terminal device in a network device in a plurality of network devices among the plurality of terminal devices.

12. The method according to any one of claims 7 to 11, characterized in that The reference signal is a channel state information reference signal CSI-RS.

13. A method for transmitting channel information, characterized in that: The method comprises: Receiving Q reporting resource indications and N reference signals; Sending the qth second reporting information on the qth reporting resource, wherein the qth second reporting information is used to indicate the top X channels with the highest priority obtained according to the first sorting rule in the qth channel matrix q elements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q.

14. The method according to claim 13, characterized in that The N reference signals belong to M groups of reference signals, and the qth second reporting information includes: q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

15. The method according to claim 14, characterized in that The corresponding relationship is indicated by a bitmap.

16. The method according to claim 14 or 15, characterized in that The qth second reporting information also includes: q The amplitude and phase of each element.

17. The method according to any one of claims 13 to 16, characterized in that: Each of the N reference signals is obtained by weighting a single user weight of a terminal device in a network device in a plurality of network devices.

18. The method according to any one of claims 13 to 17, characterized in that The reference signal is a channel state information reference signal CSI-RS.

19. A method for transmitting channel information, characterized in that: The method comprises: receiving a plurality of second reporting information sent from a plurality of terminal devices, the plurality of second reporting information including a qth second reporting information received by a terminal device in the plurality of terminal devices on a qth reporting resource, the qth second reporting information being used to indicate the top X channels with the highest priority obtained according to the first sorting rule in the qth channel matrix; q elements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, the qth reporting resource belongs to one of the reporting resources indicated by the Q reporting resources, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; Determine multi-user weights of the multiple terminal devices according to the multiple second reporting information.

20. The method of claim 19, wherein: The N reference signals belong to M groups of first reference signals, and the qth second reporting information includes the X q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

21. The method of claim 20, wherein: The corresponding relationship is indicated by a bitmap.

22. The method according to claim 20 or 21, characterized in that The qth second reporting information also includes: q The amplitude and phase of each element.

23. The method according to any one of claims 19 to 22, characterized in that The N reference signals are obtained by weighting a single user weight of a terminal device among the multiple terminal devices and a network device among the multiple network devices.

24. The method according to any one of claims 19 to 23, characterized in that The reference signal is a channel state information reference signal CSI-RS.

25. A device for transmitting channel information, characterized in that: The device comprises: a receiving unit, a sending unit and a processing unit; The receiving unit is used to receive N reference signals; The processing unit is used to determine first reporting information according to the N reference signals, where the first reporting information is used to indicate the first X elements with the highest priority obtained according to the first sorting rule in the first channel matrix, where N and X are both integers greater than or equal to 2; The sending unit is used to send the first reporting information.

26. The device according to claim 25, characterized in that The N reference signals belong to M groups of first reference signals, and the first reporting information includes: a correspondence between the X elements and the N reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

27. The device according to claim 26, characterized in that The corresponding relationship is indicated by a bitmap.

28. The device according to claim 26 or 27, characterized in that The first reporting information also includes: amplitudes and phases corresponding to the X elements.

29. The device according to any one of claims 25 to 28, characterized in that Each of the N reference signals is obtained by weighting a single user weight of a terminal device in a network device in a plurality of network devices.

30. The device according to any one of claims 25 to 29, characterized in that The reference signal is a channel state information reference signal CSI-RS.

31. A channel transmission device, characterized in that: The device comprises: a receiving unit and a processing unit; The receiving unit is configured to receive a plurality of first reporting information sent from a plurality of terminal devices, wherein one of the plurality of first reporting information is used to indicate first X elements with the highest priority obtained according to a first sorting rule in a first channel matrix of a terminal device among the plurality of terminal devices, wherein the first channel matrix is ​​determined according to N reference signals, and N and X are both integers greater than or equal to 2; The processing unit is used to determine the multi-user weights of the multiple terminal devices according to the multiple first reporting information.

32. The device according to claim 31, characterized in that The N reference signals belong to M groups of first reference signals, and one first reporting information among the multiple first reporting information includes: a correspondence between the X elements and the N first reference signals in the M groups, where M is an integer greater than or equal to 2, and N and X are greater than or equal to M.

33. The device according to claim 32, characterized in that The corresponding relationship is indicated by a bitmap.

34. The device according to claim 32 or 33, characterized in that The first reporting information among the multiple reporting information further includes: amplitudes and phases corresponding to the X elements.

35. The device according to any one of claims 31 to 34, characterized in that The N reference signals are obtained by weighting a single user weight of a terminal device among the multiple terminal devices and a network device among the multiple network devices.

36. The device according to any one of claims 31 to 35, characterized in that The reference signal is a channel state information reference signal CSI-RS.

37. A channel transmission device, characterized in that: The device comprises: a receiving unit, a sending unit and a processing unit; The receiving unit is used to receive Q reporting resource indications and N reference signals; The processing unit is used to determine the qth second reporting information according to the N reference signals, wherein the qth second reporting information is used to indicate the top X channels with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; The sending unit is used to send the qth second reporting information on the qth reporting resource.

38. The device according to claim 37, characterized in that The N reference signals belong to M groups of first reference signals, and the qth second reporting information includes: q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

39. The device according to claim 38, characterized in that The corresponding relationship is indicated by a bitmap.

40. The device according to claim 37 or 39, characterized in that The qth second reporting information also includes: q The amplitude and phase of each element.

41. The device according to any one of claims 37 to 40, characterized in that The N reference signals are obtained by weighting a single user weight of a terminal device in a network device in a plurality of network devices.

42. The device according to any one of claims 37 to 41, characterized in that The reference signal is a channel state information reference signal CSI-RS.

43. A channel transmission device, characterized in that: The device comprises: a receiving unit and a processing unit; The receiving unit is configured to receive a plurality of second reporting information sent from a plurality of terminal devices, wherein the plurality of second reporting information includes the qth second reporting information received by one of the plurality of terminal devices on the qth reporting resource, wherein the qth second reporting information is used to indicate the top X channels with the highest priority obtained according to the first sorting rule in the qth channel matrix. q elements, the qth channel matrix is ​​determined according to some reference signals in the N reference signals, the qth reporting resource belongs to one of the reporting resources indicated by the Q reporting resources, N and X q are all integers greater than or equal to 2, and q is less than or equal to Q; The processing unit is used to determine the multi-user weights of the multiple terminal devices according to the multiple second reporting information.

44. The device according to claim 43, characterized in that The N reference signals belong to M groups of reference signals, and the qth second reporting information includes the X q The corresponding relationship between the elements and the M groups of N reference signals, M is an integer greater than or equal to 2, N and X q Greater than or equal to M.

45. The device according to claim 44, characterized in that The corresponding relationship is indicated by a bitmap.

46. ​​The device according to claim 44 or 45, characterized in that The qth second reporting information also includes: q The amplitude and phase of each element.

47. The device according to any one of claims 43 to 46, characterized in that The N reference signals are obtained by weighting a single user weight of a network device among the multiple network devices by a terminal device among the multiple terminal devices.

48. The device according to any one of claims 43 to 47, characterized in that The N reference signals are N channel state information reference signals CSI-RS.

49. A device for transmitting channel information, characterized in that: include: A processor and a memory, wherein the processor is coupled to the memory and is configured to read and execute instructions in the memory to perform the method according to any one of claims 1 to 24.

50. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a program code, and when the computer program code is executed on a computer, the computer is caused to execute the method according to any one of claims 1 to 24.

51. A chip, characterized in that: include: A circuit for executing the method according to any one of claims 1 to 24.

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