Method and apparatus for wireless communication

Abstract

The application discloses a method and device for wireless communication. A first node receives first information and transmits a first measurement information set; wherein the first information indicates at least a first time-frequency resource set and a second time-frequency resource set, the first time-frequency resource set includes at least a target first type time-frequency resource, the second time-frequency resource set includes a plurality of second type time-frequency resources, and the first measurement information set includes at least a first resource indication, a second resource indication and a first CQI; the application can improve transmission efficiency and reduce redundancy cost.

Description

Technical Field

[0001] This invention relates to methods and apparatus in wireless communication systems, and more particularly to schemes and apparatus for channel state information in wireless communication systems. Background Technology

[0002] In traditional wireless communication, the base station selects a suitable MCS (Modulation and Coding Scheme) for the UE (User Equipment) based on the CSI (Channel Status Information) reported by the UE (User Equipment). The selected MCS is then communicated to the UE via downlink signaling, so that the UE can demodulate the TB (Transport Block) according to the MCS. Summary of the Invention

[0003] CQI (Channel Quality Indicator) is a type of CSI. In traditional CQI methods, resources used for channel measurement (e.g., CSI-Resource) and resources used for interference measurement (e.g., CSI-Resource) are in a one-to-one correspondence. The inventors discovered that, for a given set of channel measurement resources, if the base station wants to obtain channel state information under multiple interference assumptions, the UE needs to feed back multiple CQIs, wasting air interface resources.

[0004] To address the aforementioned problems, this application discloses a solution. It should be noted that while many embodiments of this application focus on cooperation between base stations, this application can also be used in traditional base station-based collaborative solutions. Furthermore, adopting a unified CSI scheme can reduce implementation complexity or improve performance. Unless otherwise specified, embodiments and features in any node of this application can be applied to any other node. Unless otherwise specified, embodiments and features in any embodiment of this application can be arbitrarily combined with each other.

[0005] This application discloses a method used in a first node for wireless communication, comprising:

[0006] Receive first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources;

[0007] Send a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI;

[0008] Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

[0009] As an example, the above method reduces the overhead of air interface resources caused by the first set of measurement information and improves transmission efficiency.

[0010] As an example, the above method helps to achieve closer cooperation between cells, reduce interference, and improve throughput.

[0011] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0012] Determine the target second type of time-frequency resource from the second type of time-frequency resources outside the second time-frequency resource subset;

[0013] Interference measurements performed on only the target second-class time-frequency resource among a plurality of second-class time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset are used to calculate the first CQI.

[0014] As an example, the above method saves air interface overhead and improves feedback efficiency.

[0015] Specifically, according to one aspect of this application, the above method is characterized in that the first information indicates a third time-frequency resource set, the third time-frequency resource set including at least a target third type of time-frequency resource, the target first type of time-frequency resource being associated with the target third type of time-frequency resource; and interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

[0016] As an example, at least one first-type time-frequency resource in the first time-frequency resource set is associated with the same cell as at least one second-type time-frequency resource in the second time-frequency resource set.

[0017] Specifically, according to one aspect of this application, the above method is characterized in that the second type of time-frequency resource with the strongest measured interference is selected from the second time-frequency resource set and the second time-frequency resource subset as the target second type of time-frequency resource.

[0018] As an example, the above method can improve the robustness of downlink scheduling and minimize BLER (Block Error Rate).

[0019] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0020] The first receiver determines a second time-frequency resource subset from the second time-frequency resource set.

[0021] As an example, the above method can avoid interference in a specific direction.

[0022] Specifically, according to one aspect of this application, the method is characterized in that the second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

[0023] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0024] Receive the first wireless signal in the fourth time-frequency resource set;

[0025] The interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

[0026] The above method can improve the transmission robustness or spectral efficiency of the first wireless signal.

[0027] As an example, the first CQI is used to determine the MCS of the first wireless signal.

[0028] This application discloses a method used in a second node for wireless communication, comprising:

[0029] Send a first message, the first message indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources;

[0030] Receive a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI;

[0031] Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

[0032] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0033] Send the first return signaling via the air interface;

[0034] The second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

[0035] Compared to wired communication, the above method can improve the interaction speed between the second node and the receiver of the first backhaul signaling and reduce interference.

[0036] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0037] Receive the second echo signaling via the air interface;

[0038] The second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

[0039] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0040] Transmit the first wireless signal in the fourth time-frequency resource set;

[0041] The interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

[0042] After eliminating specific interference, the above method can significantly improve the reception performance of the first wireless signal.

[0043] Specifically, according to one aspect of this application, the above method is characterized in that interference measurements performed on only the target second type of time-frequency resource among a plurality of second type time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset are used to calculate the first CQI.

[0044] Specifically, according to one aspect of this application, the above method is characterized in that the second type of time-frequency resource with the strongest measured interference is selected from the second time-frequency resource set and the second time-frequency resource subset as the target second type of time-frequency resource.

[0045] The first receiver determines the target second type of time-frequency resource from the second type of time-frequency resources outside the second time-frequency resource subset;

[0046] Specifically, according to one aspect of this application, the above method is characterized in that the first information indicates a third time-frequency resource set, the third time-frequency resource set including at least a target third type of time-frequency resource, the target first type of time-frequency resource being associated with the target third type of time-frequency resource; and interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

[0047] This application discloses a method used in a third node for wireless communication, comprising:

[0048] Receive the first echo signaling via the air interface;

[0049] Wherein, the second resource indication is used to generate the first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set; the second resource indication is used to indicate the second time-frequency resource subset, which includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second time-frequency resource subset belongs to the second time-frequency resource set; the second resource indication belongs to the first measurement information set, which includes at least the first resource indication and the first CQI; the first resource indication is used to indicate the target first type of time-frequency resource, and the channel measurement performed on the target first type of time-frequency resource is used to calculate the first CQI, and the interference measurement performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset is used to calculate the first CQI; the target first type of time-frequency resource belongs to the first time-frequency resource set; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set.

[0050] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0051] Send the second transmission signal via the air interface;

[0052] The second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

[0053] Specifically, according to one aspect of this application, the above method is characterized by comprising:

[0054] In the fourth time-frequency resource set, the transmission parameters of any second type of time-frequency resource QCL in the second time-frequency resource subset are avoided.

[0055] This application discloses a first node used for wireless communication, comprising:

[0056] A first receiver receives first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources;

[0057] A first transmitter transmits a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI;

[0058] Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

[0059] This application discloses a second node used for wireless communication, comprising:

[0060] The second transmitter transmits first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources;

[0061] A second receiver receives a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI;

[0062] Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

[0063] This application discloses a third node used for wireless communication, which includes:

[0064] The third receiver receives the first return signaling via the air interface;

[0065] Wherein, the second resource indication is used to generate the first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set; the second resource indication is used to indicate the second time-frequency resource subset, which includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second time-frequency resource subset belongs to the second time-frequency resource set; the second resource indication belongs to the first measurement information set, which includes at least the first resource indication and the first CQI; the first resource indication is used to indicate the target first type of time-frequency resource, and the channel measurement performed on the target first type of time-frequency resource is used to calculate the first CQI, and the interference measurement performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset is used to calculate the first CQI; the target first type of time-frequency resource belongs to the first time-frequency resource set; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set. Attached Figure Description

[0066] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0067] Figure 1A flowchart illustrating the transmission of first measurement information according to an embodiment of the present invention is shown;

[0068] Figure 2 A schematic diagram of a network architecture according to an embodiment of the present invention is shown;

[0069] Figure 3 A schematic diagram of an embodiment of a radio protocol architecture for the user plane and control plane according to an embodiment of the present invention is shown;

[0070] Figure 4 A schematic diagram of the hardware module of a communication node according to an embodiment of the present invention is shown;

[0071] Figure 5 A transmission flowchart between a first node, a second node, and a third node according to an embodiment of the present invention is shown;

[0072] Figure 6 A schematic diagram illustrating the determination of a target second type of time-frequency resource according to an embodiment of the present invention is shown;

[0073] Figure 7 A schematic diagram of CQI calculation according to an embodiment of the present invention is shown;

[0074] Figure 8 A schematic diagram of the return signaling according to an embodiment of the present invention is shown;

[0075] Figure 9 A structural block diagram of a processing apparatus for a first node according to an embodiment of the present invention is shown;

[0076] Figure 10 A structural block diagram of a processing apparatus for a second node according to an embodiment of the present invention is shown;

[0077] Figure 11 A structural block diagram of a processing apparatus for a third node according to an embodiment of the present invention is shown. Detailed Implementation

[0078] The technical solution of this application will be further described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0079] Example 1

[0080] Example 1 illustrates a flowchart of transmitting first measurement information according to an embodiment of this application, as shown in the attached diagram. Figure 1 As shown.

[0081] In Example 1, the first node 100 receives first information in step 101, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes multiple second type of time-frequency resources; in step S102, it sends a first measurement information set, the first measurement information set including at least a first resource indication, a second resource indication, and a first CQI;

[0082] In Example 1, the first resource indication is used to indicate the target first type of time-frequency resource, and the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources including at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belonging to the second time-frequency resource set; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set.

[0083] As an example, the cell associated with any first type of time-frequency resource in the first time-frequency resource set and the cell associated with any second type of time-frequency resource in the second time-frequency resource set are maintained by two different nodes.

[0084] As an example, either of the two different nodes is a gNB.

[0085] As an example, either of the two different nodes is an NG-RAN (NG Radio Access Network) node.

[0086] As an example, the two different nodes are connected via at least an Xn interface.

[0087] The advantages of the above three embodiments are that they reduce interference between base stations and significantly improve the transmission efficiency of the entire system (especially terminals at the cell edge).

[0088] As an example, the cell associated with any first type of time-frequency resource in the first time-frequency resource set and the cell associated with any second type of time-frequency resource in the second time-frequency resource set are maintained by the second node and the third node, respectively.

[0089] Typically, the first information includes higher-level signaling.

[0090] As an example, the first information is RRC (Radio Resource Control) layer signaling.

[0091] As an example, the first information is an RRC IE (Information Element).

[0092] As an example, the name of the RRC IE includes CSI-Report.

[0093] As an example, the name of the RRC IE includes ReportConfig.

[0094] As one example, the first information includes CSI-ReportConfig IE.

[0095] Typically, a Class I time-frequency resource and a Class II time-frequency resource each include multiple REs (Resource Elements).

[0096] Typically, one Type I time-frequency resource and one Type II time-frequency resource are used to transmit reference signals from two different cells.

[0097] In this application, SSB is also referred to as the reference signal.

[0098] As an example, the first type of time-frequency resource and the second type of time-frequency resource are each a CSI resource.

[0099] As an example, the first type of time-frequency resource is a non-zero power CSI-RS resource (NZP CSI-RS resource), or an SSB (Synchronization Signal / Physical Broadcast Channel block) resource indicated by ssb-Index.

[0100] As an example, the second type of time-frequency resource is an SSB (Synchronization Signal / Physical Broadcast Channel block) resource indicated by an ssb-index.

[0101] As an example, the second type of time-frequency resource is a non-zero power CSI-RS resource (NZPCSI-RSresource), or an SSB (Synchronization Signal / Physical Broadcast Channel block) resource indicated by ssb-Index.

[0102] Typically, there are multiple second-type time-frequency resource sets in addition to the second time-frequency resource subset.

[0103] Typically, the PCI (Physical Layer Cell Identity) of the cell associated with any first-type time-frequency resource in the first time-frequency resource set is different from the PCI of the cell associated with any second-type time-frequency resource in the second time-frequency resource set.

[0104] As an example, any first type of time-frequency resource in the first time-frequency resource set is associated with a first cell, and any second type of time-frequency resource in the second time-frequency resource set is associated with a cell other than the first cell.

[0105] As an example, when a first type of time-frequency resource or a second type of time-frequency resource is allocated to a cell, the first type of time-frequency resource or the second type of time-frequency resource is associated with the cell.

[0106] As an example, when a cell's PCI is used to generate an RS sequence of a Reference Signal (RS) transmitted in a first type of time-frequency resource or an RS sequence of a second type of time-frequency resource, the first type of time-frequency resource or the second type of time-frequency resource is associated with the cell.

[0107] As a sub-implementation of the above embodiments, the RS is CSI-RS (Channel Status Information Reference Signal), or the RS is SSB (Synchronization Signal / Physical Broadcast Channel block) and the RS sequence includes PSS (Primary synchronization signal) and SSS (Secondary synchronization signal).

[0108] As an example, when a first-type time-frequency resource or a second-type time-frequency resource is associated with an SSB QCL (Quasi co-location) indicated by any ssb-index of a cell, the first-type time-frequency resource or the second-type time-frequency resource is associated with the cell.

[0109] As a sub-implementation of the above embodiments, the type of QCL includes at least Doppler shift.

[0110] As a sub-implementation of the above embodiments, the type of the QCL is at least one of Type A, Type B and Type C.

[0111] As an example, when a signal on a first type of time-frequency resource or a signal on a second type of time-frequency resource is downlink synchronized with a cell, the first type of time-frequency resource or the second type of time-frequency resource is associated with the cell.

[0112] As an example, when a signal on a first type of time-frequency resource or a signal on a second type of time-frequency resource is a SSB of a cell, the first type of time-frequency resource or the second type of time-frequency resource is associated with the cell.

[0113] As an example, when a signal on a first type of time-frequency resource or a signal on a second type of time-frequency resource is transmitted on a cell, the first type of time-frequency resource or the second type of time-frequency resource is associated with the cell.

[0114] As an example, the first type of time-frequency resource is either an SSB indicated by ssb-index or a CSI-RS resource; the second type of time-frequency resource is either an SSB indicated by ssb-index, a CSI-RS resource, or a CSI-IM (Channel State Information–Interference Measurement) resource.

[0115] As an example, the first set of measurement information occupies only one physical layer channel.

[0116] As an example, the physical layer channel occupied by the first resource indication is different from the physical layer channel occupied by the second resource indication.

[0117] As a sub-implementation of the above embodiments, the second resource indication occupies the same physical layer channel as the first CQI.

[0118] As a sub-implementation of the above embodiments, the feedback period of the first resource indication is longer than the feedback period of the second resource indication.

[0119] As an example, the physical layer channel occupied by the first resource indication is different from the physical layer channel occupied by the first CQI.

[0120] As a sub-implementation of the above embodiments, the second resource indication and the first resource indication occupy the same physical layer channel.

[0121] As a sub-implementation of the above embodiments, the feedback period of the first resource indication is the same as the feedback period of the second resource indication, and both are greater than the feedback period of the first CQI.

[0122] The two embodiments described above can reduce overhead and improve transmission efficiency.

[0123] As an example, the physical layer channel is PUCCH (Physical Uplink Control Channel).

[0124] As an example, the physical layer channel is PUSCH (Physical Uplink Shared Channel).

[0125] As an example, the first resource indicator is a CRI (CSI-RS Resource Indicator).

[0126] As an example, the first resource indicator is an SSBRI (SSB Resource Indicator).

[0127] As one embodiment, the second resource indication includes a bitmap, where each bit in the bitmap indicates whether a second type of time-frequency resource in the second time-frequency resource set belongs to the second time-frequency resource subset.

[0128] As one embodiment, the second resource indication includes M indications, each of which indicates M second-type time-frequency resources from the second time-frequency resource set. The second time-frequency resource subset consists of the M second-type time-frequency resources, where M is a positive integer.

[0129] As an example, each of the M instructions is a CRI or an SSBRI.

[0130] As an example, the first time-frequency resource set consists of all CSI resources in a csi-RS-ResourceSetList.

[0131] As an example, the first time-frequency resource set consists of all CSI resources in a CSI resource set.

[0132] As an example, the first time-frequency resource set is indicated by the CSI-ResourceConfig IE in the first information.

[0133] As a sub-implementation of the above three embodiments, the second time-frequency resource set is said to consist of all CSI resources in a csi-RS-ResourceSetList.

[0134] As a sub-implementation of the above three embodiments, the second time-frequency resource set consists of all CSI resources in a CSI resource set.

[0135] As a sub-implementation of the above three embodiments, the second time-frequency resource set is indicated by the CSI-ResourceConfig IE in the first information.

[0136] As an example, the type of CSI resource is periodic or semi-static.

[0137] As an example, how the first CQI is calculated is related to the receiver algorithm of the first node, for example, determined based on the BLER (Block Error Rate) vs. white noise (dB) curve.

[0138] As an example, the first node first preprocesses the channel measurement results and interference measurement results, and then uses a lookup table to determine the first CQI.

[0139] As one example, the preprocessing includes decomposing the MIMO (Multiple Input Multiple Output) channel into an eigen-channel.

[0140] As one example, the preprocessing includes whitening interference.

[0141] As an example, the first CQI is the largest CQI index that satisfies the following conditions: the error probability of a transport block does not exceed a specific threshold, provided that the MCS (Modulation and Coding scheme) and TBS (Transport Block Size) indicated by the CQI index are used and the CSI reference resource is occupied.

[0142] As an example, the specific threshold is 0.1.

[0143] As an example, the specific threshold is 0.00001.

[0144] As one embodiment, the first information indicates a plurality of time-frequency resource sets, the second time-frequency resource set is one of the plurality of time-frequency resource sets, and the first resource indication is used to determine the second time-frequency resource set from the plurality of time-frequency resource sets.

[0145] The above method can independently interfere with specific beams to avoid related configurations, which can further improve transmission performance.

[0146] Typically, the order of the multiple time-frequency resource sets in the configuration signaling corresponds one-to-one with the order of the first type of time-frequency resources in the first time-frequency resource set in the configuration signaling.

[0147] Example 2

[0148] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of this application, as shown in the attached diagram. Figure 2 As shown. (Attached) Figure 2The system architectures of 5G NR (New Radio), LTE (Long-Term Evolution), and LTE-A (Long-Term Evolution Advanced) are described. The 5G NR or LTE network architecture 200 can be referred to as 5GS (5G System) / EPS (Evolved Packet System) or some other suitable term. EPS 200 may include a UE (User Equipment) 201, NG-RAN (Next Generation Radio Access Network) 202, EPC (Evolved Packet Core) / 5G-CN (5G-Core Network) 210, HSS (Home Subscriber Server) 220, and Internet service 230. EPS can interconnect with other access networks, but these entities / interfaces are not shown for simplicity. As shown in the figure, EPS provides packet-switched services; however, those skilled in the art will readily understand that the various concepts presented throughout this application can be extended to networks providing circuit-switched services or other cellular networks. NG-RAN includes NR Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination to UE 201. gNB 203 can connect to other gNBs 204 via the Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), TRP, or some other suitable term. gNB 203 provides UE 201 with access to EPC / 5G-CN210. Examples of UE 201 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, non-terrestrial base station communications, satellite mobile communications, GPS, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband IoT devices, machine-type communication devices, land vehicles, automobiles, wearable devices, or any other similarly functional devices. Those skilled in the art may also refer to UE201 as a mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. gNB203 is connected to EPC / 5G-CN 210 via the S1 / NG interface.The EPC / 5G-CN 210 includes an MME (Mobility Management Entity), an AMF (Authentication Management Field), and a UPF (User Plane Function) 211, other MMEs, AMFs, and UPFs 214, an S-GW (Service Gateway) 212, and a P-GW (Packet Data Network Gateway) 213. The MME / AMF / UPF 211 is the control node that handles signaling between the UE 201 and the EPC / 5G-CN 210. Generally, the MME / AMF / UPF 211 provides bearer and connection management. All user IP (Internet Protocol) packets are transmitted through the S-GW 212, which is itself connected to the P-GW 213. The P-GW 213 provides UE IP address allocation and other functions. The P-GW 213 is connected to Internet Service 230. Internet services 230 include operator-compliant Internet protocol services, which may specifically include the Internet, intranets, IMS (IP Multimedia Subsystem), and packet-switched streaming services.

[0149] As an example, the UE201 corresponds to the first node in this application, and the gNB203 includes the second node and the third node in this application.

[0150] As a sub-example of the above embodiment, the second node and the third node are each a TRP (Transmitter Receiver Point).

[0151] As an example, UE201 corresponds to the first node in this application, gNB203 corresponds to the second node in this application, and gNB204 corresponds to the third node in this application.

[0152] As a sub-implementation of the above embodiments, at least one of gNB203 and gNB204 supports full-duplex.

[0153] As an example, the UE201 is a terminal that supports Massive-MIMO.

[0154] As an example, the gNB203 or the gNB204 supports Massive-MIMO-based transmission.

[0155] As an example, gNB203 or gNB204 is a macrocell base station.

[0156] As an example, gNB203 or gNB204 is a microcell base station.

[0157] As an example, gNB203 or gNB204 is a PicoCell base station.

[0158] As an example, gNB203 or gNB204 is a femtocell.

[0159] As an example, gNB203 or gNB204 is a base station device that supports large latency differences.

[0160] As an example, gNB203 or gNB204 is a flight platform device.

[0161] As an example, gNB203 or gNB204 is a satellite device.

[0162] As an example, the first node and the second node in this application both correspond to the UE201, for example, V2X communication is performed between the first node and the second node.

[0163] Example 3

[0164] Example 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture for a user plane and a control plane according to this application, as shown in the attached diagram. Figure 3 As shown. Figure 3 This is a schematic diagram illustrating an embodiment of a radio protocol architecture for the user plane 350 and the control plane 300. Figure 3The radio protocol architecture for the control plane 300 between the first node device (UE or RSU in V2X, onboard equipment or onboard communication module) and the second node device (gNB, UE or RSU in V2X, onboard equipment or onboard communication module), or between two UEs, is illustrated using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (Physical Layer) signal processing functions. L1 layer will be referred to herein as PHY301. Layer 2 (L2 layer) 305 sits above PHY301 and is responsible for the link between the first node device and the second node device, as well as between the two UEs, through PHY301. L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second node device. PDCP sublayer 304 provides data encryption and integrity protection, and also supports cross-regional movement from the first node device to the second node device. RLC sublayer 303 provides packet segmentation and reassembly, implements retransmission of lost packets via ARQ, and also provides duplicate packet detection and protocol error detection. MAC sublayer 302 provides mapping between logical and transport channels and multiplexing of logical channels. MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) within a cell among the first node devices. MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3) of the control plane 300 is responsible for acquiring radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second node device and the first node device. The radio protocol architecture of user plane 350 includes Layer 1 (L1 layer) and Layer 2 (L2 layer). The radio protocol architecture for the first and second node devices in user plane 350 is largely the same as the corresponding layers and sublayers in control plane 300 for Physical Layer 351, PDCP sublayer 354 in L2 layer 355, RLC sublayer 353 in L2 layer 355, and MAC sublayer 352 in L2 layer 355. However, PDCP sublayer 354 also provides header compression for upper layer packets to reduce radio transmission overhead. L2 layer 355 in user plane 350 also includes SDAP (Service Data Adaptation Protocol) sublayer 356. SDAP sublayer 356 is responsible for mapping between QoS streams and Data Radio Bearers (DRBs) to support service diversity.Although not illustrated, the first node device may have several upper layers above the L2 layer 355, including a network layer (e.g., IP layer) terminating at the P-GW on the network side and an application layer terminating at the other end of the connection (e.g., remote UE, server, etc.).

[0165] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the first node in this application.

[0166] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the second node in this application.

[0167] As an example, Appendix Figure 3 The wireless protocol architecture described herein is applicable to the third node described in this application.

[0168] As an example, the first or second backhaul signaling in this application is generated in the PHY301.

[0169] As an example, the first or second backhaul signaling in this application is generated in the MAC sublayer 302.

[0170] As an example, the first information in this application is generated in the RRC sublayer 306.

[0171] As an example, the first set of measurement information in this application is generated in the PHY301.

[0172] Example 4

[0173] Example 4 illustrates a hardware module schematic diagram of a communication node according to an embodiment of this application, as shown in the attached diagram. Figure 4 As shown. Figure 4 This is a block diagram of a first communication device 450 and a second communication device 410 communicating with each other in the access network.

[0174] The first communication device 450 includes a controller / processor 459, a memory 460, a data source 467, a transmitting processor 468, a receiving processor 456, a multi-antenna transmitting processor 457, a multi-antenna receiving processor 458, a transmitter / receiver 454, and an antenna 452.

[0175] The second communication device 410 includes a controller / processor 475, a memory 476, a receiver processor 470, a transmitter processor 416, a multi-antenna receiver processor 472, a multi-antenna transmitter processor 471, a transmitter / receiver 418, and an antenna 420.

[0176] In the transmission from the second communication device 410 to the first communication device 450, at the second communication device 410, upper-layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements L2 layer functionality. In the transmission from the second communication device 410 to the first communication device 450, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio resource allocation to the first communication device 450 based on various priority metrics. The controller / processor 475 is also responsible for retransmitting lost packets and signaling to the first communication device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). Transmit processor 416 performs channel coding and interleaving to facilitate forward error correction (FEC) at the second communication device 410, and mapping of signal clusters based on various modulation schemes (e.g., Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), M-Phase Shift Keying (M-PSK), M-QAM). Multi-antenna transmit processor 471 performs digital spatial precoding on the encoded and modulated symbols, including codebook-based and non-codebook-based precoding, and beamforming processing, generating one or more spatial streams. Transmit processor 416 then maps each spatial stream to subcarriers, multiplexes it with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently uses inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. Multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multicarrier symbol stream provided by the multi-antenna transmitter processor 471 into an radio frequency stream, which is then provided to different antennas 420.

[0177] In the transmission from the second communication device 410 to the first communication device 450, at the first communication device 450, each receiver 454 receives a signal through its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the radio frequency carrier and converts the radio frequency stream into a baseband multicarrier symbol stream, which is then provided to the receiver processor 456. The receiver processor 456 and the multi-antenna receiver processor 458 implement various signal processing functions of the L1 layer. The multi-antenna receiver processor 458 performs receive analog precoding / beamforming operations on the baseband multicarrier symbol stream from the receiver 454. The receiver processor 456 uses a Fast Fourier Transform (FFT) to convert the baseband multicarrier symbol stream after the receive analog precoding / beamforming operations from the time domain to the frequency domain. In the frequency domain, the physical layer data signal and the reference signal are demultiplexed by the receiver processor 456, where the reference signal is used for channel estimation, and the data signal is recovered in the multi-antenna receiver processor 458 after multi-antenna detection to recover any spatial stream destined for the first communication device 450. Symbols on each spatial stream are demodulated and recovered in the receive processor 456, generating soft decisions. The receive processor 456 then deinterleaves and decodes the soft decisions to recover the upper-layer data and control signals transmitted by the second communication device 410 over the physical channel. The upper-layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of Layer 2. The controller / processor 459 may be associated with a memory 460 storing program code and data. The memory 460 may be referred to as computer-readable media. In the transmission from the second communication device 410 to the second node 450, the controller / processor 459 provides multiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover upper-layer data packets from the core network. The upper-layer data packets are then provided to all protocol layers above Layer 2. Various control signals may also be provided to Layer 3 for Layer 3 processing.

[0178] In the transmission from the first communication device 450 to the second communication device 410, at the first communication device 450, a data source 467 is used to provide upper-layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmission functions at the second communication device 410 described in the transmission from the second communication device 410 to the first communication device 450, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on radio resource allocation, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for retransmitting lost packets and signaling to the second communication device 410. Transmit processor 468 performs channel coding, interleaving, and modulation mapping. Multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. Subsequently, transmit processor 468 modulates the generated spatial stream into a multi-carrier / single-carrier symbol stream. After analog precoding / beamforming operations in multi-antenna transmit processor 457, the stream is provided to different antennas 452 via transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by multi-antenna transmit processor 457 into a radio frequency symbol stream before providing it to antenna 452.

[0179] In the transmission from the first communication device 450 to the second communication device 410, the function at the second communication device 410 is similar to the receiving function at the first communication device 450 described in the transmission from the second communication device 410 to the first communication device 450. Each receiver 418 receives radio frequency signals through its corresponding antenna 420, converts the received radio frequency signals into baseband signals, and provides the baseband signals to the multi-antenna receiving processor 472 and the receiving processor 470. The receiving processor 470 and the multi-antenna receiving processor 472 jointly implement the L1 layer functions. The controller / processor 475 implements the L2 layer functions. The controller / processor 475 may be associated with a memory 476 that stores program code and data. The memory 476 may be referred to as computer-readable media. In the transmission from the first communication device 450 to the second communication device 410, the controller / processor 475 provides multiplexing between the transmission and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper-layer data packets from the UE 450. Upper-layer packets from the controller / processor 475 can be provided to the core network.

[0180] As one embodiment, the first communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor, and the first communication device 450 includes at least: receiving first information and transmitting a first set of measurement information.

[0181] As one embodiment, the first communication device 450 includes: a memory storing a computer-readable instruction program that produces actions when executed by at least one processor, the actions including: receiving first information and sending a first set of measurement information.

[0182] As one embodiment, the second communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 includes at least: transmitting first information and receiving a first set of measurement information.

[0183] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program that produces actions when executed by at least one processor, the actions including: sending first information and receiving a first set of measurement information.

[0184] As one embodiment, the second communication device 410 includes at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used with the at least one processor. The second communication device 410 at least: receives a first return signaling via an air interface, and transmits a second return signaling via an air interface.

[0185] As one embodiment, the second communication device 410 includes: a memory storing a computer-readable instruction program that produces actions when executed by at least one processor, the actions including: receiving a first return signaling via an air interface and sending a second return signaling via an air interface.

[0186] As an example, the first communication device 450 corresponds to the first node in this application.

[0187] As an example, the second node and the third node in this application are respectively constructed using the second communication device 410.

[0188] As an example, the first communication device 450 is a UE.

[0189] As an example, the first communication device 450 is a base station.

[0190] As one embodiment, the second communication device 410 is a UE.

[0191] As one embodiment, the second communication device 410 is a base station.

[0192] As one embodiment, the antenna 452, the receiver 454, the multi-antenna receiving processor 458, the receiving processor 456, and the controller / processor 459 are used to receive the first information.

[0193] As one embodiment, the antenna 452, the receiver 454, the multi-antenna receiver processor 458, the receiver processor 456, and the controller / processor 459 are used to receive and perform channel measurements and interference measurements.

[0194] As one embodiment, the antenna 452, the transmitter 454, the multi-antenna transmitter processor 457, the transmitter processor 468, and the controller / processor 459 are used to transmit the first set of measurement information.

[0195] As one embodiment, the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller / processor 475 are used to transmit the first information.

[0196] As one embodiment, the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller / processor 475 are used to send the first return signaling.

[0197] As one embodiment, the antenna 420, the receiver 418, the multi-antenna receiver processor 472, the receiver processor 470, and the controller / processor 475 are used to receive the first set of measurement information.

[0198] As one embodiment, the antenna 420, the receiver 418, the multi-antenna receiver processor 472, the receiver processor 470, and the controller / processor 475 are used to receive the second backhaul signaling.

[0199] Example 5

[0200] Example 5 illustrates a transmission flowchart between a first node, a second node, and a third node according to an embodiment of this application, as shown in the attached diagram. Figure 5 As shown. (Attached) Figure 5 In the diagram, the steps in boxes F1 and F2 are optional.

[0201] For the first node N1, in step S101, first information is received, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources; in step S102, a first measurement information set is sent, the first measurement information set including at least a first resource indication, a second resource indication, and a first CQI; in step S103, a first wireless signal is received in a fourth time-frequency resource set; wherein the interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset;

[0202] For the second node N2, in step S201, the first information is sent; in step S202, the first measurement information set is received; in step S203, a first backhaul signaling is sent through the air interface, the first backhaul signaling being used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set; in step S204, a second backhaul signaling is received through the air interface, the first backhaul signaling being used to trigger the second backhaul signaling; and in step S205, the first wireless signal is sent in the fourth time-frequency resource set.

[0203] For the third node N3, in step S301, the first return signaling is received through the air interface; in step S302, the second return signaling is sent through the air interface.

[0204] In Example 5, the first resource indication is used to indicate the target first type of time-frequency resource, and the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources including at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belonging to the second time-frequency resource set; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set; the second resource indication is used to generate a first backhaul signaling; the interference experienced by the first radio signal is unrelated to the interference measured in the second subset of time-frequency resources.

[0205] As one embodiment, the second node N2 transmits a reference signal in the first time-frequency resource set, and the third node N3 transmits a reference signal in the second time-frequency resource set.

[0206] As an example, the first CQI is used to determine the MCS of the first wireless signal.

[0207] As an example, the first time-frequency resource set, the second time-frequency resource set, and the third time-frequency resource set are simultaneously used to measure other interference signals, which are used to calculate the first CQI.

[0208] As an example, the other interference includes background noise.

[0209] As one example, the other interference includes interference caused by signals transmitted by base stations other than the second node N2 and the third node N3.

[0210] As an example, the other interference includes interference from other wireless systems outside of cellular networks.

[0211] The specific determination method is determined by the scheduling algorithm of the second node N2. For example, the MCS of the first wireless signal is the MCS with the highest spectral efficiency whose spectral efficiency is not higher than the first CQI. Or, the MCS of the first wireless signal is the MCS with the highest spectral efficiency whose spectral efficiency is not higher than the first reference CQI. The first reference CQI is equal to the first CQI plus the first offset. Interference between multi-user MIMO or outer loop control based on ACK / NACK is used to determine the first offset.

[0212] As one embodiment, the first node N1, the second node N2, and the third node N3 are respectively a UE, an NG-RAN node, and another NG-RAN node.

[0213] As an example, both the first backhaul signaling and the second backhaul signaling are physical layer signaling.

[0214] As an example, both the first backhaul signaling and the second backhaul signaling include MAC (Medium Access Control) and CE (Control Element).

[0215] The two embodiments described above can reduce the latency of inter-base station interactions, making inter-base station cooperation faster and reducing interference.

[0216] As an example, the third node N3 transmits a reference signal on any of the second type of time-frequency resources in the second time-frequency resource subset.

[0217] As one embodiment, the phrase "first backhaul signaling is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set" includes: the first backhaul signaling is used to request or instruct the third node N3 to avoid using the transmission space parameters on any second type of time-frequency resource in the second time-frequency resource subset on the fourth time-frequency resource set.

[0218] As one embodiment, the transmission spatial parameters include a simulated beamforming vector.

[0219] As one embodiment, the transmission spatial parameters include digital beamforming vectors.

[0220] As one embodiment, the transmission spatial parameters include spatial filtering parameters.

[0221] As one embodiment, the phrase "first backhaul signaling is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set" includes: the first backhaul signaling is used to request or instruct the third node N3 to avoid sending signals of any second type of time-frequency resource QCL in the second time-frequency resource subset on the fourth time-frequency resource set.

[0222] As one embodiment, the second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on at least a portion of the time-frequency resources of the fourth time-frequency resource set.

[0223] As one embodiment, the second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

[0224] As an example, the second return signaling is used to instruct the third node N3 to avoid sending signals for any of the second type of time-frequency resources (QCL) in the fourth time-frequency resource set.

[0225] As one embodiment, the second return signaling is used to instruct the third node N3 not to send a signal in the fourth time-frequency resource set, or to send a signal that does not have a QCL with any second type of time-frequency resource in the second time-frequency resource subset.

[0226] As an example, the second backhaul signaling is used to confirm that the request of the first backhaul signaling has been agreed to.

[0227] As an example, the channel occupied by the first wireless signal includes DL-SCH (DownLink Shared Channel).

[0228] As an example, the channel occupied by the first wireless signal includes PDSCH (Physical Downlink Shared Channel).

[0229] As an example, the channel occupied by the first wireless signal includes PDCCH (Physical Downlink Control Channel).

[0230] As an example, the channels occupied by the first wireless signal include PDCCH and PDSCH.

[0231] As an example, the time-frequency resources occupied by the first backhaul signaling implicitly indicate the time-frequency resources occupied by the second backhaul signaling.

[0232] As an example, the time-frequency resources occupied by the second backhaul signaling are associated with the time-frequency resources occupied by the first backhaul signaling.

[0233] As an example, the first wireless signal occupies only a portion of the time-frequency resources in the fourth time-frequency resource set.

[0234] As an example, the fourth time-frequency resource set is allocated to multiple UEs, and the first node N1 is one of the multiple UEs.

[0235] As an example, the first backhaul signaling indicates at least the second time-frequency resource subset.

[0236] As an example, the second node N2 determines the second type of time-frequency resource in the second time-frequency resource set indicated in the first backhaul signaling according to its own scheduling algorithm, and the second resource indication is used as input by the scheduling algorithm.

[0237] As an example, the scheduling algorithm also takes a subset of the second type of time-frequency resources reported by other UEs besides the first node N1 as input.

[0238] As an example, interference measurements performed on all second-class time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset are used to calculate the first CQI.

[0239] As a sub-implementation of the above embodiment, interference measurements are performed on all second-type time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset, and the average value of the interference signals obtained from all interference measurements is used to calculate the first CQI.

[0240] As an example, the first node N1 determines a target second type of time-frequency resource from a second type of time-frequency resource outside the second time-frequency resource subset and in the second time-frequency resource set; wherein, interference measurements performed on only the target second type of time-frequency resource among the multiple second type of time-frequency resources outside the second time-frequency resource subset and in the second time-frequency resource set are used to calculate the first CQI.

[0241] As an example, the first node N1 determines the target second type of time-frequency resource on its own.

[0242] As an example, the first node N1 randomly determines the target second time-frequency resource.

[0243] As an example, the selection of the target second type of time-frequency resource satisfies the following condition: when any second type of time-frequency resource from the second time-frequency resource set but outside the second time-frequency resource subset is used for interference measurement, the calculated CQI index is not less than the first CQI.

[0244] The above method ensures that the first CQI is a low-bound CQI, which ensures the robustness of the first wireless signal.

[0245] As an example, the first node N1 selects the second type of time-frequency resource with the strongest measured interference from the second time-frequency resource set and the second time-frequency resource subset as the target second type of time-frequency resource.

[0246] As an example, the first set of measurement information includes the interference amount measured on the target second type of time-frequency resource.

[0247] One advantage of the above embodiment is that it helps the second node determine whether the number of second-type time-frequency resources included in the second time-frequency resource subset is appropriate.

[0248] The above embodiments avoid calculating the CQI index for each second type of time-frequency resource, thus reducing the CPU (CSI Processing Unit) usage.

[0249] As an example, the interference amount includes the RSRP (Reference Signal Received Power) of the occupied cell.

[0250] As an example, the interference amount includes the RSRQ (Reference Signal Received Quality) of the occupied cell.

[0251] As an example, the interference amount includes SINR (Signal to Interference Noise Ratio), which refers to the signal transmitted by the occupied cell.

[0252] As an example, the occupied cell is maintained by the second node N2.

[0253] As an example, all second-type time-frequency resources in the second time-frequency resource set but outside the second time-frequency resource subset are occupied by the same cell, that is, they correspond to the same occupying cell.

[0254] As one embodiment, the occupied cell corresponding to any second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset is maintained by a network-side device other than the second node N2, and at least one occupied cell corresponding to a second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset is maintained by a network-side device other than the third node N3.

[0255] The advantage of the above embodiments is that they can simultaneously avoid interference from multiple NG-RAN nodes, thereby further improving transmission performance.

[0256] As an example, the first information indicates a third time-frequency resource set, the third time-frequency resource set including at least a target third type of time-frequency resource, the target first type of time-frequency resource being associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

[0257] Typically, the target third-class time-frequency resources are used to measure interference from the Interference Transmission Layer.

[0258] Typically, the third time-frequency resource set includes multiple third-class time-frequency resources, and the target third-class time-frequency resource is one of the multiple third-class time-frequency resources.

[0259] The above method enables the first node to reasonably generate the first CQI based on unavoidable interference, thereby improving decoding accuracy.

[0260] As an example, the number of third-type time-frequency resources included in the third time-frequency resource set is the same as the number of first-type time-frequency resources included in the first time-frequency resource set.

[0261] As a sub-implementation of the above embodiments, the third type of time-frequency resources corresponds one-to-one with the first type of time-frequency resources according to their positional order in the third time-frequency resource set and their positional order in the first time-frequency resource set.

[0262] As an example, the third time-frequency resource set is a CSI resource set.

[0263] As an example, any third type of time-frequency resource in the third time-frequency resource set is a CSI-IM resource or a CSI-RS resource.

[0264] As an example, any third type of time-frequency resource in the third time-frequency resource set is configured by csi-IM-Resource or nzp-CSI-RS-Resources.

[0265] Typically, any third-class time-frequency resource in the third time-frequency resource set is associated with an SSB or CSI-RS resource of the first cell, or a CSI-IM resource; at least one first-class time-frequency resource in the first time-frequency resource set is associated with the first cell.

[0266] As an example, all first-type time-frequency resources in the first time-frequency resource set are associated with the first cell.

[0267] As an example, the first information indicates the types of CSIs included in the first measurement information set.

[0268] As an example, the type of CSI included in the first set of measurement information is indicated by the reportQuantity in the first information.

[0269] Example 6

[0270] Example 6 illustrates a schematic diagram of determining a target second type of time-frequency resource according to an embodiment of this application. (See attached diagram.) Figure 6 Steps 601 and 602 are executed in the first node, where step 601 is optional.

[0271] In step 601, the first node determines a second time-frequency resource subset from the second time-frequency resource set; in step 602, it determines a target second type of time-frequency resource from the second type of time-frequency resources outside the second time-frequency resource subset and the second time-frequency resource set.

[0272] In Example 6, interference measurements performed on only the target second type of time-frequency resource among a plurality of second type time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset are used to calculate the first CQI.

[0273] Typically, how to determine the second time-frequency resource subset from the second time-frequency resource set depends on the implementation of the first node. Several non-limiting implementation methods are given below.

[0274] As one embodiment, the second time-frequency resource subset includes at least one second type of time-frequency resource, and the first node randomly selects the second type of time-frequency resource belonging to the second time-frequency resource subset from the second time-frequency resource set.

[0275] As an example, the second time-frequency resource subset includes at least one second type of time-frequency resource. For any second type of time-frequency resource in the second time-frequency resource subset and any second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset, the CQI index calculated based on the interference measured on the former is not greater than the CQI index calculated based on the interference measured on the latter.

[0276] The above methods can avoid the strongest interference and improve transmission performance.

[0277] As one embodiment, the second time-frequency resource subset includes at least one second type of time-frequency resource, and the interference measured on any second type of time-frequency resource in the second time-frequency resource subset is stronger than the interference measured on any second type of time-frequency resource in the second time-frequency resource set and outside the second time-frequency resource subset.

[0278] The above method avoids a large amount of CQI calculation and reduces CPU usage.

[0279] As an example, the interference amount includes the RSRP of the occupied cell.

[0280] As an example, the interference amount includes the RSRQ of the occupied cell.

[0281] As an example, the interference amount includes SINR, which targets signals transmitted by an occupied cell.

[0282] As an example, the occupied cell is maintained by the second node N2.

[0283] As an example, all second-type time-frequency resources in the second time-frequency resource set but outside the second time-frequency resource subset are occupied by the same cell, that is, they correspond to the same occupying cell.

[0284] As an example, the number of second-type time-frequency resources included in the second time-frequency resource subset is configurable.

[0285] As an example, the first information indicates the number of second-type time-frequency resources included in the second time-frequency resource subset.

[0286] Example 7

[0287] Example 7 illustrates a schematic diagram of CQI calculation according to yet another embodiment of this application, as shown in the attached diagram. Figure 7 As shown.

[0288] In Example 7, the second time-frequency resource set includes four second-type time-frequency resources. The third node N3 transmits reference signals on the four second-type time-frequency resources using spatial transmission parameter groups B1, B2, B3 and B4 respectively.

[0289] The second resource indication fed back by the first node N1 is used to indicate the two second-class time-frequency resources occupied by the spatial transmission parameter groups B1 and B2 from the four second-class time-frequency resources, namely the second time-frequency resource subset.

[0290] The second node N2 generates a first backhaul signaling based on at least the second resource indication, and then sends the first backhaul signaling to the third node N3 via the air interface.

[0291] Interference measurements performed on at least one of the two second-class time-frequency resources using spatial transmission parameter groups B3 and B4 are used to calculate a first CQI, which is used to determine the MCS of the first radio signal. On the time-frequency resources where the second node N2 transmits the first radio signal, the third node N3 avoids using spatial transmission parameters B1 and B2, thus significantly reducing the interference experienced by the first radio signal.

[0292] As an example, each space transmits a parameter group indexed by a TCI-state.

[0293] As an example, each space transmit parameter group is indexed by an ssb-index.

[0294] As an example, in the time-frequency resources for the second node N2 to transmit the first wireless signal, the first node N3 uses spatial transmission parameters B3 and B4 to transmit the wireless signal.

[0295] As an example, there is a wired backhaul link L1 between the second node N2 and the third node N3. Before sending the first information, the second node N2 and the third node N3 make the necessary configuration through the wired backhaul link L1.

[0296] As one embodiment, the necessary configuration includes either the second time-frequency resource set or the fourth time-frequency resource set.

[0297] As one embodiment, the necessary configuration includes the time and frequency resources occupied by the first backhaul signaling or the time and frequency resources occupied by the second backhaul signaling.

[0298] As an example, the wired backhaul link L1 supports the Xn interface.

[0299] Example 8

[0300] Example 8 illustrates a schematic diagram of the return signaling according to an embodiment of this application, as shown in the attached diagram. Figure 8 As shown. (Attached) Figure 8 It describes a full-duplex working method.

[0301] As an example, the transmission of the first backhaul signaling overlaps in time with the uplink reception of the second node N2 (as shown by arrow A21), and the reception of the first backhaul signaling overlaps in time with the uplink reception of the third node N3 (as shown by arrow A31); that is, the second node N2 transmits the first backhaul signaling in full-duplex mode.

[0302] As an example, the transmission of the first backhaul signaling overlaps in time with the downlink transmission of the second node N2 (as shown by arrow A22), and the reception of the first backhaul signaling overlaps in time with the downlink transmission of the third node N3 (as shown by arrow A32); that is, the third node N3 transmits the first backhaul signaling in full-duplex mode.

[0303] As an example, the reception of the second backhaul signaling overlaps in time with the uplink reception of the second node N2 (as shown by arrow A21), and the transmission of the second backhaul signaling overlaps in time with the uplink reception of the third node N3 (as shown by arrow A31); that is, the third node N3 transmits the first backhaul signaling in full-duplex mode.

[0304] As an example, the reception of the second backhaul signaling overlaps in time with the downlink transmission of the second node N2 (as shown by arrow A22), and the transmission of the second backhaul signaling overlaps in time with the downlink transmission of the third node N3 (as shown by arrow A32); that is, the second node N2 transmits the first backhaul signaling in full-duplex mode.

[0305] Example 9

[0306] Example 9 illustrates a structural block diagram of a processing apparatus for a first node according to an embodiment of this application; as shown in the appendix. Figure 9 As shown. In the appendix Figure 9 In the first node, the processing device 900 includes a first receiver 901 and a first transmitter 902; the first node 900 is a user equipment.

[0307] The first receiver 901 receives first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources;

[0308] The first transmitter 902 transmits a first measurement information set, the first measurement information set including at least a first resource indication, a second resource indication, and a first CQI;

[0309] In Example 9, the first resource indication is used to indicate the target first type of time-frequency resource, and the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources including at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belonging to the second time-frequency resource set; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set.

[0310] Typically, the interference measurement performed on at least one type of second time-frequency resource in the second time-frequency resource set and outside the second time-frequency resource subset includes measuring a reference signal transmitted by a non-serving cell.

[0311] Typically, the interference measurement performed on at least one second-class time-frequency resource in the second time-frequency resource set and outside the second time-frequency resource subset includes measuring a reference signal transmitted by a non-serving NG-RAN node.

[0312] As an example, the first receiver 901 determines a target second type of time-frequency resource from a second type of time-frequency resource outside the second time-frequency resource subset and in the second time-frequency resource set; wherein, interference measurements performed on only the target second type of time-frequency resource among the plurality of second type of time-frequency resources outside the second time-frequency resource subset and in the second time-frequency resource set are used to calculate the first CQI.

[0313] As one embodiment, the first information indicates a third time-frequency resource set, the third time-frequency resource set including at least a target third type of time-frequency resource, the target first type of time-frequency resource being associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI; each NZP (non-zero power) CSI-RS resource in the third time-frequency resource set is used to measure interference from the Interference Transmission Layer.

[0314] As an example, the target second type of time-frequency resource is a second type of time-frequency resource that has the strongest measured interference among the second type of time-frequency resources in the second time-frequency resource set but outside the second time-frequency resource subset.

[0315] As an example, the first set of measurement information includes the interference amount measured on the target second type of time-frequency resources.

[0316] As one embodiment, the first receiver 901 determines a second time-frequency resource subset from the second time-frequency resource set.

[0317] As one embodiment, the second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

[0318] As an example, the first receiver 901 receives a first radio signal in the fourth time-frequency resource set; wherein the interference experienced by the first radio signal is unrelated to the interference measured in the second time-frequency resource subset.

[0319] As one embodiment, the first transmitter 902 includes the appendix to this application. Figure 4 The antenna 452, transmitter / receiver 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460, and data source 467 are at least one of them.

[0320] As one embodiment, the first transmitter 902 includes the appendix to this application. Figure 4 The components include antenna 452, transmitter / receiver 454, multi-antenna transmitter processor 457, transmitter processor 468, controller / processor 459, memory 460, and data source 467.

[0321] As one embodiment, the first receiver 901 includes the appendix to this application. Figure 4The antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467 are at least the first five of the following:

[0322] As one embodiment, the first receiver 901 includes the appendix to this application. Figure 4 At least four of the following: antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467.

[0323] As one embodiment, the first receiver 901 includes the appendix to this application. Figure 4 At least three of the following: antenna 452, receiver 454, multi-antenna receiver processor 458, receiver processor 456, controller / processor 459, memory 460, and data source 467.

[0324] Example 10

[0325] Example 10 illustrates a structural block diagram of a processing apparatus for a second node according to an embodiment of this application; as shown in the appendix. Figure 10 As shown. In the appendix Figure 10 In the second node, the processing device 1000 includes a second transmitter 1001 and a second receiver 1002; the second node 1000 is a base station device.

[0326] The second transmitter 1001 transmits first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources;

[0327] The second receiver 1002 receives a first measurement information set, the first measurement information set including at least a first resource indication, a second resource indication, and a first CQI;

[0328] In Example 10, the first resource indication is used to indicate the target first type of time-frequency resource, and the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources including at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belonging to the second time-frequency resource set; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set.

[0329] As one embodiment, the second transmitter 1001 sends a first return signaling via an air interface; wherein the second resource indication is used to generate the first return signaling, and the first return signaling is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

[0330] As one embodiment, the second receiver 1002 receives a second return signaling via an air interface; wherein the second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

[0331] As one embodiment, the second transmitter 1001 transmits a first wireless signal in the fourth time-frequency resource set; wherein the interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

[0332] As an example, the first information indicates a third time-frequency resource set, the third time-frequency resource set including at least a target third type of time-frequency resource, the target first type of time-frequency resource being associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

[0333] As an example, the target second type of time-frequency resource is a second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset that has the strongest measured RSRP.

[0334] As one embodiment, the second transmitter 1001 includes the antenna 420, the transmitter 418, the transmission processor 416, and the controller / processor 475.

[0335] As an example, the second transmitter 1001 includes the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller / processor 475.

[0336] As one embodiment, the second transmitter 1001 includes the antenna 420, the transmitter 418, the transmission processor 416, and the controller / processor 475.

[0337] As an example, the second transmitter 1001 includes the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller / processor 475.

[0338] As one embodiment, the second receiver 1002 includes the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, and the controller / processor 475.

[0339] As one embodiment, the second receiver 1002 includes the controller / processor 475.

[0340] Example 11

[0341] Example 11 illustrates a structural block diagram of a processing apparatus for a third node according to an embodiment of this application; as shown in the appendix. Figure 11 As shown. In the appendix Figure 11 In the process, the processing device 1100 in the third node includes a third transmitter 1101 and a third receiver 1102, and the third node 1100 is a base station device.

[0342] The third receiver 1102 receives the first return signaling via the air interface;

[0343] The third transmitter 1101 sends a second return signaling through the air interface;

[0344] In Example 11, a second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set; the second resource indication is used to indicate a second time-frequency resource subset, which includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second time-frequency resource subset belongs to the second time-frequency resource set; the second resource indication belongs to a first measurement information set, which includes at least a first resource indication and a first CQI; the first resource indication is used to indicate a target first type of time-frequency resource, in the... Channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI; interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the target first type of time-frequency resource belongs to the first time-frequency resource set; the cell associated with any first type of time-frequency resource in the first time-frequency resource set is different from the cell associated with any second type of time-frequency resource in the second time-frequency resource set; the second backhaul signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

[0345] As an example, the first information indicates a third time-frequency resource set, the third time-frequency resource set including at least a target third type of time-frequency resource, the target first type of time-frequency resource being associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

[0346] As an example, the target second type of time-frequency resource is a second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset that has the strongest measured RSRP.

[0347] As an example, the third node 1100 is a base station device.

[0348] As an example, the third transmitter 1101 includes the antenna 420, the transmitter 418, the transmission processor 416, and the controller / processor 475.

[0349] As an example, the third transmitter 1101 includes the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller / processor 475.

[0350] As an example, the third transmitter 1101 includes the antenna 420, the transmitter 418, the transmission processor 416, and the controller / processor 475.

[0351] As an example, the third transmitter 1101 includes the antenna 420, the transmitter 418, the multi-antenna transmission processor 471, the transmission processor 416, and the controller / processor 475.

[0352] As one embodiment, the third receiver 1102 includes the antenna 420, the receiver 418, the multi-antenna receiving processor 472, the receiving processor 470, and the controller / processor 475.

[0353] As one embodiment, the third receiver 1102 includes the controller / processor 475.

[0354] Those skilled in the art will understand that all or part of the steps in the above methods can be implemented by a program instructing related hardware, and the program can be stored in a computer-readable storage medium, such as a read-only memory, hard disk, or optical disk. Optionally, all or part of the steps in the above embodiments can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiments can be implemented in hardware or in the form of software functional modules. This application is not limited to any specific combination of software and hardware. The user equipment, terminal, and UE in this application include, but are not limited to, drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablets, laptops, vehicle-mounted communication devices, wireless sensors, internet cards, IoT terminals, RFID terminals, NB-IoT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication devices, low-cost mobile phones, low-cost tablets, and other wireless communication devices. The base station or system equipment in this application includes, but is not limited to, macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR Node B), TRP (Transmitter Receiver Point), and other wireless communication equipment.

[0355] Those skilled in the art will understand that the present invention can be practiced in other specified forms without departing from its core or essential characteristics. Therefore, the embodiments disclosed herein should in any way be considered descriptive rather than restrictive. The scope of the invention is defined by the appended claims rather than the foregoing description, and all modifications within their equivalent meaning and scope are considered to be included therein.

Claims

1. A first node used for wireless communication, wherein, include: A first receiver receives first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources; A first transmitter transmits a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI; Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

2. The first node according to claim 1, characterized in that, include: The first receiver determines the target second type of time-frequency resource from the second type of time-frequency resources outside the second time-frequency resource subset; Interference measurements performed on only the target second-class time-frequency resource among a plurality of second-class time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset are used to calculate the first CQI.

3. The first node according to claim 1 or 2, characterized in that, The first information indicates a third time-frequency resource set, which includes at least a target third type of time-frequency resource, and the target first type of time-frequency resource is associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

4. The first node according to claim 2 or 3, characterized in that, The second type of time-frequency resource with the strongest measured interference is selected from the second time-frequency resource set and the second time-frequency resource subset as the target second type of time-frequency resource.

5. The first node according to any one of claims 1 to 4, characterized in that, include: The first receiver determines a second time-frequency resource subset from the second time-frequency resource set.

6. The first node according to any one of claims 1 to 5, characterized in that, The second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

7. The first node according to claim 6, characterized in that, include: The first receiver receives the first wireless signal in the fourth time-frequency resource set; The interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

8. A second node used for wireless communication, wherein, include: The second transmitter transmits first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources; A second receiver receives a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI; Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

9. The second node according to claim 8, characterized in that, include: The second transmitter sends the first return signaling via the air interface; The second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

10. The second node according to claim 9, characterized in that, include: The second receiver receives the second return signaling via the air interface; The second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

11. The second node according to claim 9 or 10, characterized in that, include: The second transmitter transmits a first wireless signal in the fourth time-frequency resource set; The interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

12. A third node used for wireless communication, wherein, include: The third receiver receives the first return signaling via the air interface; Wherein, the second resource indication is used to generate the first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set; the second resource indication is used to indicate the second time-frequency resource subset, which includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second time-frequency resource subset belongs to the second time-frequency resource set; the second resource indication belongs to the first measurement information set, which includes at least the first resource indication and the first CQI; the first resource indication is used to indicate the target first type of time-frequency resource, and channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the target first type of time-frequency resource belongs to the first time-frequency resource set; The cell associated with any first-type time-frequency resource in the first time-frequency resource set is different from the cell associated with any second-type time-frequency resource in the second time-frequency resource set.

13. The third node according to claim 12, characterized in that, include: The third transmitter sends the second return signal via the air interface; The second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

14. The third node according to claim 13, characterized in that, include: The third transmitter avoids using transmission parameters that are the same as any of the second type of time-frequency resources (QCL) in the second time-frequency resource subset within the fourth time-frequency resource set.

15. A method used in a first node of wireless communication, wherein, include: Receive first information, the first information indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources; Send a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI; Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

16. The method in the first node according to claim 15, characterized in that, include: Determine the target second type of time-frequency resource from the second type of time-frequency resources outside the second time-frequency resource subset; Interference measurements performed on only the target second-class time-frequency resource among a plurality of second-class time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset are used to calculate the first CQI.

17. The method in the first node according to claim 15 or 16, characterized in that, The first information indicates a third time-frequency resource set, which includes at least a target third type of time-frequency resource, and the target first type of time-frequency resource is associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

18. The method in the first node according to claim 16 or 17, characterized in that, The second type of time-frequency resource with the strongest measured interference is selected from the second time-frequency resource set and the second time-frequency resource subset as the target second type of time-frequency resource.

19. The method in the first node according to any one of claims 15 to 18, characterized in that, include: Determine a second time-frequency resource subset from the second time-frequency resource set.

20. The method in the first node according to any one of claims 15 to 19, characterized in that, The second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

21. The method in the first node according to claim 20, characterized in that, include: Receive the first wireless signal in the fourth time-frequency resource set; The interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

22. A method for use in a second node of wireless communication, wherein, include: Send a first message, the first message indicating at least a first time-frequency resource set and a second time-frequency resource set, wherein the first time-frequency resource set includes at least a target first type of time-frequency resource, and the second time-frequency resource set includes a plurality of second type of time-frequency resources; Receive a first set of measurement information, the first set of measurement information including at least a first resource indication, a second resource indication, and a first CQI; Wherein, the first resource indication is used to indicate the target first type of time-frequency resource, the second resource indication is used to indicate a second subset of time-frequency resources, the second subset of time-frequency resources includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second subset of time-frequency resources belongs to the second set of time-frequency resources; channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second set of time-frequency resources but outside the second subset of time-frequency resources are used to calculate the first CQI; the cell associated with any first type of time-frequency resource in the first set of time-frequency resources is different from the cell associated with any second type of time-frequency resource in the second set of time-frequency resources.

23. The method in the second node according to claim 22, characterized in that, include: Send the first return signaling via the air interface; The second resource indication is used to generate a first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set.

24. The method in the second node according to claim 23, characterized in that, include: Receive the second echo signaling via the air interface; The second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

25. The method in the second node according to claim 23 or 24, characterized in that, include: Transmit the first wireless signal in the fourth time-frequency resource set; The interference experienced by the first wireless signal is unrelated to the interference measured in the second time-frequency resource subset.

26. The method in the second node according to any one of claims 22 to 25, characterized in that, Interference measurements performed on only the target second-class time-frequency resource are used to calculate the first CQI among a plurality of second-class time-frequency resources in the second time-frequency resource set and outside the second time-frequency resource subset.

27. The method in the second node according to claim 26, characterized in that, The second type of time-frequency resource with the strongest measured interference is selected from the second time-frequency resource set and the second time-frequency resource subset as the target second type of time-frequency resource; Determine the target second type of time-frequency resource from the second type of time-frequency resources outside the second time-frequency resource subset; The first information indicates a third time-frequency resource set, which includes at least a target third type of time-frequency resource, and the target first type of time-frequency resource is associated with the target third type of time-frequency resource; interference measurements performed on the target third type of time-frequency resource are used to calculate the first CQI.

28. A method for use in a third node of wireless communication, wherein, include: Receive the first echo signaling via the air interface; Wherein, the second resource indication is used to generate the first backhaul signaling, which is used to avoid interference measured in the second time-frequency resource subset on the fourth time-frequency resource set; the second resource indication is used to indicate the second time-frequency resource subset, which includes at least one second type of time-frequency resource, and any second type of time-frequency resource in the second time-frequency resource subset belongs to the second time-frequency resource set; the second resource indication belongs to the first measurement information set, which includes at least the first resource indication and the first CQI; the first resource indication is used to indicate the target first type of time-frequency resource, and channel measurements performed on the target first type of time-frequency resource are used to calculate the first CQI, and interference measurements performed on at least one second type of time-frequency resource in the second time-frequency resource set but outside the second time-frequency resource subset are used to calculate the first CQI; the target first type of time-frequency resource belongs to the first time-frequency resource set; The cell associated with any first-type time-frequency resource in the first time-frequency resource set is different from the cell associated with any second-type time-frequency resource in the second time-frequency resource set.

29. The method in the third node according to claim 28, characterized in that, include: Send the second transmission signal via the air interface; The second return signaling is used to confirm that interference measured in the second time-frequency resource subset is avoided on the fourth time-frequency resource set.

30. The method in the third node according to claim 28 or 29, characterized in that, include: In the fourth time-frequency resource set, the transmission parameters of any second type of time-frequency resource QCL in the second time-frequency resource subset are avoided.

Images