Communication method and device and computer readable storage medium

Abstract

Provided are a communication method and apparatus, and a computer readable storage medium, the communication method comprising: reporting a first resource index and a second resource index, the first resource index indicating a preferred beam in beams generating cross-link interference, and the second resource index indicating a preferred beam for data transmission. The invention provides a scheme for reducing cross-link interference between terminal equipment when the terminal equipment receives downlink data in a sub-band full duplex scene.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device, and a computer-readable storage medium. Background Art

[0002] With the rapid growth of uplink service demand, higher requirements are placed on uplink coverage, rate and latency. Full-duplex technology can transmit uplink and downlink links at the same time. Compared with the existing time division duplex (TDD) system that focuses more on downlink transmission, it provides an opportunity for the enhancement of uplink services. The duplex enhancement topic will study sub-band full-duplex on the base station side, such as Figure 1 As shown in the figure, on the base station side, the existence of sub-bands is used to divide the uplink and downlink transmissions in the frequency domain. While ensuring that uplink and downlink transmissions can be performed at the same time, frequency division is used to reduce interference, reduce the complexity of the base station, and make it easier to implement, becoming a hot spot in technical research. Sub-band full-duplex divides the frequency domain resources into different sub-bands on the base station side, and downlink transmission and uplink reception are performed simultaneously on different sub-bands. For users, half-duplex is still supported, and at a certain point in time, only downlink reception can be performed in the downlink sub-band or uplink transmission can be performed in the uplink sub-band. This will introduce cross-link interference (Cross Link Interference, CLI) between base stations (gNB-to-gNB) and between terminal devices (UE-to-UE), among which inter subband CLI is the newly introduced CLI in sub-band full-duplex. In the cross-link interference between terminal devices in the sub-band full-duplex scenario, the terminal device performing uplink transmission in the uplink sub-band is the terminal device generating interference, which can be called the aggressor UE; the terminal device performing downlink reception in the downlink sub-band is the terminal device receiving interference, which can be called the victim UE.

[0003] However, when the base station sends data to the victim device and there is cross-link interference from the attacking device, how the victim device selects a receiving beam to receive data is a technical problem that needs to be solved urgently, or how the base station decides a receiving beam for the victim device to receive data is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present application provides a communication method and apparatus, and provides a solution for reducing cross-link interference between terminal devices when the terminal devices receive downlink data in a sub-band full-duplex scenario.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] In a first aspect, a communication method is provided, which includes: reporting a first resource index and a second resource index, wherein the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

[0007] Optionally, the first resource index indicates a first beam with optimal cross-link interference obtained by cross-link interference measurement.

[0008] Optionally, the second resource index indicates a second beam corresponding to the optimal receiving beam under the first beam, and the corresponding relationship between the receiving beam and the second beam is determined by a quasi-co-location relationship obtained through a beam management process.

[0009] Optionally, the second resource index indicates a third beam obtained through a beam management process, and the first resource index indicates a fourth beam with optimal cross-link interference obtained by performing cross-link interference measurement on the third beam and its corresponding receiving beam.

[0010] Optionally, the communication method also includes: reporting a measurement value of a preferred beam indicated by the first resource index and / or the second resource index.

[0011] In a second aspect, the present application also discloses a communication method, which includes: receiving a first resource index and a second resource index, wherein the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

[0012] Optionally, the first resource index indicates the first beam with optimal cross-link interference obtained by cross-link interference measurement, and the second resource index indicates the second beam corresponding to the optimal one or more receiving beams under the first beam, and the correspondence between the one or more receiving beams and the second beam is obtained through a beam management process.

[0013] Optionally, the second resource index indicates a third beam obtained through a beam management process, and the first resource index indicates a fourth beam with optimal cross-link interference obtained by performing cross-link interference measurement on the third beam and its corresponding receiving beam.

[0014] Optionally, the communication method also includes: receiving a measurement value of a preferred beam indicated by the first resource index and / or the second resource index.

[0015] Optionally, the communication method further includes: sending a target standard co-location, wherein the target standard co-location indicates a resource index for data transmission.

[0016] In a third aspect, the present application also discloses a communication method, which includes: receiving a first quasi-co-location and / or a second quasi-co-location, wherein the first quasi-co-location indicates a resource index for cross-link interference measurement, and the second quasi-co-location indicates a resource index for cross-link interference.

[0017] Optionally, the communication method also includes: performing cross-link interference measurement on a receiving beam corresponding to the resource index indicated by the first quasi-co-location; and reporting a fifth resource index, wherein the fifth resource index indicates a beam with optimal cross-link interference.

[0018] Optionally, the communication method further includes: receiving a third quasi-co-location, where the third quasi-co-location indicates a resource index for data transmission.

[0019] Optionally, the communication method further includes: determining a receiving beam used for data transmission according to a resource index indicated by the second quasi-co-location indication and a resource index indicated by the third quasi-co-location indication.

[0020] In a fourth aspect, the present application also discloses a communication method, which includes: sending a first quasi-co-location and / or a second quasi-co-location, wherein the first quasi-co-location indicates a resource index used for cross-link interference measurement, and the second quasi-co-location indicates a resource index that generates cross-link interference.

[0021] Optionally, the communication method also includes: receiving a fifth resource index, wherein the fifth resource index indicates a beam with optimal cross-link interference.

[0022] Optionally, the communication method further includes: sending a third quasi co-location, where the third quasi co-location indicates a resource index for data transmission.

[0023] In the fifth aspect, the present application also discloses a communication device, which includes: a communication module, used to report a first resource index and a second resource index, the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

[0024] In a sixth aspect, the present application also discloses a communication device, which includes: a communication module for receiving a first resource index and a second resource index, wherein the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

[0025] In the seventh aspect, the present application also discloses a communication device, which includes: a communication module for receiving a first quasi-co-location and / or a second quasi-co-location, wherein the first quasi-co-location indicates a resource index for cross-link interference measurement, and the second quasi-co-location indicates a resource index that generates cross-link interference.

[0026] In the eighth aspect, the present application also discloses a communication device, which includes: a communication module, used to send a first quasi-co-location and / or a second quasi-co-location, wherein the first quasi-co-location indicates a resource index used for cross-link interference measurement, and the second quasi-co-location indicates a resource index that generates cross-link interference.

[0027] In a ninth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program is executed by a processor to execute any one of the methods provided in the first aspect or the second aspect.

[0028] In a tenth aspect, a communication device is provided, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the computer program to execute any one of the methods provided in the first aspect.

[0029] In the eleventh aspect, a communication device is provided, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and wherein the processor executes the computer program to execute any one of the methods provided in the second aspect.

[0030] In a twelfth aspect, a computer program product is provided, on which a computer program is stored, and the computer program is executed by a processor to execute any one of the methods provided in the first aspect or the second aspect.

[0031] In a thirteenth aspect, a communication system is provided, comprising the above-mentioned terminal device and the above-mentioned network device.

[0032] In a fourteenth aspect, an embodiment of the present application further provides a chip (or a data transmission device) on which a computer program is stored, and when the computer program is executed by the chip, the steps of the above method are implemented.

[0033] In the fifteenth aspect, an embodiment of the present application also provides a system chip, which is applied to a terminal, and the chip system includes at least one processor and an interface circuit, the interface circuit and the at least one processor are interconnected through lines, and the at least one processor is used to execute instructions to execute any one of the methods provided in the first aspect or the second aspect.

[0034] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0035] In the technical solution of the present application, the victim device reports at least one first resource index and at least one second resource index, wherein the first resource index indicates a preferred beam in the beam that generates cross-link interference, and the second resource index indicates a preferred beam for data transmission. In the technical solution of the present application, by enabling the victim device to report the first resource index and the second resource index, the network side can timely learn the preferred beam of the victim device in the beam that generates cross-link interference and the corresponding preferred beam for data reception, thereby deciding the receiving beam used by the victim device to take into account both data transmission and elimination of cross-link interference.

[0036] Furthermore, the second resource index indicates one or more second beams corresponding to the optimal one or more receiving beams under the first beam, and the correspondence between the one or more receiving beams and the one or more second beams is obtained through the beam management process. In the technical solution of the present application, the victim device determines several second beams based on the first beam in the cross-link interference measurement and reports them, which can reduce the reporting overhead.

[0037] Furthermore, the second resource index indicates the third beam obtained through the beam management process, and the first resource index indicates the fourth beam with the best cross-link interference obtained by performing cross-link interference measurement under the third beam and its corresponding receiving beam. In the technical solution of the present application, the victim device performs cross-link interference measurement on different third beams and their corresponding receiving beam pairs obtained in the beam management process, and reports the third beam and the fourth beam, which can make the reported content more comprehensive, help the network side make better decisions, and further reduce cross-link interference during data transmission.

[0038] In addition, in the technical solution of the present application, the victim device receives the first quasi-co-address and / or the second quasi-co-address, the first quasi-co-address indicates a resource index for cross-link interference measurement, and the second quasi-co-address indicates a resource index for cross-link interference. In the technical solution of the present application, by enabling the victim device to receive the first quasi-co-address, the victim device can perform cross-link interference measurement based on the beam corresponding to the resource index indicated by the first quasi-co-address, thereby assisting the network side decision-making on the basis of reducing the measurement workload; by enabling the victim device to receive the second quasi-co-address, the victim device can promptly know the beam that the attacking device interferes with the victim device, thereby enabling the victim device to autonomously decide the receiving beam to be used according to the second quasi-co-address, so as to take into account both data transmission and elimination of cross-link interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of a sub-band full-duplex in the prior art;

[0040] Figure 2 is a schematic diagram of a cross-link interference measurement mechanism in the prior art;

[0041] Figure 3 is a schematic diagram of cross-link interference in the prior art;

[0042] Figure 4 An interactive flow chart of a communication method provided in an embodiment of the present application;

[0043] Figure 5 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0044] Figure 6 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0045] Figure 7 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0046] Figure 8 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0047] Fig. 9 is a structural diagram of a communication device provided in an embodiment of the present application;

[0048] Fig.10 It is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The communication systems to which the embodiments of the present application are applicable include, but are not limited to, Long Term Evolution (LTE) systems, fifth-generation (5G) systems, new wireless (NR) systems, and future evolution systems or multiple communication fusion systems. Among them, the 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system. The technical solution of the present application is also applicable to different network architectures, including but not limited to relay network architectures, dual-connection architectures, vehicle-to-everything communication architectures, and other architectures.

[0050] This application mainly involves the communication between terminal equipment and network equipment. Among them:

[0051] The network device in the embodiment of the present application may also be referred to as an access network device, for example, it may be a base station (BS) (also referred to as a base station device), and the network device is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, in the second-generation (2G) network, the equipment that provides base station functions includes the base transceiver station (BTS), in the third-generation (3G) network, the equipment that provides base station functions includes the node B (NodeB), and in the fourth-generation (4G) network, the equipment that provides base station functions includes the evolved node B (eNB). In wireless local area networks (WLAN), the equipment that provides base station functions is the access point (AP), and the equipment that provides base station functions in NR is the next generation Node Base station (gNB), as well as the evolved node B (ng-eNB), where the gNB and the terminal device communicate using NR technology, and the ng-eNB and the terminal device communicate using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, and both gNB and ng-eNB can be connected to the 5G core network. The network devices in the embodiments of the present application also include devices that provide base station functions in future new communication systems, etc.

[0052] The terminal equipment in the embodiments of the present application may refer to various forms of access terminals, user units, user stations, mobile stations, mobile stations (Mobile Station, MS), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents or user devices. The terminal equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolving Public Land Mobile Network (PLMN), etc., which is not limited in the embodiments of the present application. The terminal equipment may also be referred to as User Equipment (UE), a terminal, etc.

[0053] In the prior art, the terminal device can perform CLI measurement reporting based on airspace information. This measurement reporting mainly determines the minimum interference transmission beam (Txbeam) of the attacking device by reporting several preferred beams. The base station can then control the attacking device to transmit according to the reported beam, thereby reducing CLI interference between terminal devices. Figure 2 As shown in the figure, the attacking device sends sounding reference signals (SRS) of different beams on different resources. After the victim device performs measurements, it determines that SRS 3 is the preferred beam and reports SRS 3 as the preferred beam. Since the reception of the terminal device is achieved through the terminal device, the victim device will not report the reception under the preferred beam, but the victim device itself knows which receiving beam to use corresponding to the transmitting beam direction of the attacking device. When the victim device receives data, its beam direction has been determined by beam management (BM). When sending data, the base station will configure the receiving terminal device with quasi co-location (QCL), thereby configuring the receiving beam of the terminal device.

[0054] As described in the background technology, when the base station sends data to the victim device and at the same time there is cross-link interference from the attacking device, how the victim device selects a receiving beam to receive data is a technical problem that needs to be solved urgently, or how the base station decides a receiving beam for the victim device to receive data is a technical problem that needs to be solved urgently.

[0055] Specifically, SRS can be used for Layer 3 (L3) inter-user CLI measurement, but it does not take into account the receiving beam direction of the victim device, which is the same as the direction of the last physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) or the direction of the last monitored control resource set (Control Resource Set, CORESET).

[0056] Specifically, in beam management, the base station first configures the resources for the beam management process through Radio Resource Control (RRC) signaling, and then triggers the transmission on these resources (semi-continuous and non-periodic triggering is required). The terminal device measures these resources, determines the receiving status on different resources, and then reports the beam. At this time, the content reported by the terminal device is associated with the index of the sending resource, that is, if the best beam reported corresponds to resource 0, it means that the sending beam corresponding to the signal sent by the base station on resource 0 is the best beam. This report content only tells the base station which sending beam is the best, and the base station does not need to know which receiving beam the terminal device corresponds to at this time. From the terminal device side, after the report is completed, the base station only needs to indicate the corresponding relationship between the sending beam and the receiving beam of a downlink signal through QCL, and the terminal device can determine its corresponding receiving beam through the sending beam, so as to receive it. Therefore, during the beam management process, the base station only knows the transmitting beam of the downlink signal, but knows nothing about the receiving beam of the terminal device. On the contrary, through the beam management process, the terminal device knows the quality of each transmitting beam and the corresponding receiving beam.

[0057] The applicant found that Figure 2 Taking the scenario shown as an example, when the attacking device's transmission beam is the beam corresponding to the SRS 3 resource, base station 1 needs to send downlink data to the victim device. One solution is for base station 1 to control the receiving beam of the victim device. However, at this time, base station 1 does not know the correspondence between the victim device's receiving beam in SRS 3 and the data receiving beam. Another solution is that the victim device itself decides which receiving beam to use. In this case, the victim device needs to know the transmitting beam of base station 1 for sending downlink data and the transmitting beam of the attacking device.

[0058] In the technical solution of the present application, by enabling the victim device to report the first resource index and the second resource index, the network side can promptly learn the preferred beam of the victim device among the beams that generate cross-link interference and the corresponding preferred beam for data reception, thereby deciding the receiving beam used by the victim device to take into account both data transmission and elimination of cross-link interference.

[0059] In the technical solution of the present application, by enabling the victim device to receive the first quasi-co-address, the victim device can perform cross-link interference measurement based on the beam corresponding to the resource index indicated by the first quasi-co-address, thereby assisting the network side in making decisions on the basis of reducing the measurement workload; by enabling the victim device to receive the second quasi-co-address, the victim device can promptly know the beam that the attacking device interferes with the victim device, thereby enabling the victim device to autonomously decide on the receiving beam to be used according to the second quasi-co-address, so as to take into account both data transmission and elimination of cross-link interference.

[0060] The inter-subband CLI referred to in this application mainly refers to the cross-link interference between users, specifically refers to the interference of a terminal device performing uplink transmission in an uplink subband to a terminal device performing downlink reception in a downlink subband.

[0061] Specifically, in the full-duplex topic, there is also a dynamic / flexible TDD scenario, that is, different slot configurations are used in different cells, for example, one cell is for downlink transmission and the other cell is for uplink transmission, as shown below Figure 3 As shown in the figure, if the macro base station is for downlink transmission and the factory base station is for uplink transmission, there will be cross-link interference from the macro base station to the factory base station, and from the factory cell UE1 to the macro base station cell UE2.

[0062] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0063] See also Figure 4 The method provided in this application specifically includes the following steps:

[0064] Step 401: A network device receives a first resource index and a second resource index reported by a terminal device.

[0065] The terminal device in this embodiment may be a victim device, that is, the victim device reports at least one first resource index and at least one second resource index to the network device.

[0066] It is understandable that, in a specific implementation, the communication method can be implemented in the form of a software program, which runs in a processor integrated inside a chip or a chip module. The method can also be implemented in the form of software combined with hardware, which is not limited in this application.

[0067] In this embodiment, the first resource index indicates a preferred beam in the beam that generates cross-link interference, and the second resource index indicates a preferred beam for data transmission. The first resource index may be obtained based on a cross-link interference measurement process, and the second resource index may be obtained based on a beam management process.

[0068] Specifically, the preferred beams among the beams generating cross-link interference may refer to one or more beams with the best or largest cross-link interference obtained by cross-link interference measurement. The preferred beams for data transmission may refer to one or more beams with the best or worst measured values ​​among the beams for data transmission.

[0069] It should be noted that the beam indicated by the resource index and the beam indicated by the quasi-co-location in the embodiments of the present application both refer to the transmission beam, that is, the beam used by the network device to send downlink data or the beam used by the attacking device to send uplink data.

[0070] The following describes the process in combination with different embodiments.

[0071] Example 1: The first resource index indicates the first beam with the best cross-link interference obtained by cross-link interference measurement, and the second resource index indicates one or more second beams corresponding to the best one or more receiving beams under the first beam. The correspondence between one or more receiving beams and one or more second beams is obtained through the beam management process.

[0072] Refer to Figure 5 ,In step 501, the victim device and the network device perform beam management.

[0073] Specifically, the transmission beam and the reception beam for data transmission between the network device and the terminal device, that is, the transmission and reception beam pair, can be determined through beam management. In step 502, the victim device performs cross-link interference measurement.

[0074] Specifically, the cross-link interference measurement is performed by the victim device in the RRC connected state. Through step 502, the victim device can obtain the measured values ​​of the cross-link interference of each transmission beam of the attacking device, so as to determine the first beam with the best cross-link interference, and the number of the first beams can be one or more.

[0075] It should be noted that the first beam with the best cross-link interference can be a beam with an interference value lower than a threshold value, or the transmitting beams of the attacking device are sorted from small to large according to the interference value, and the first beam can be one or more beams with the highest sorting. This application does not impose any restrictions on this.

[0076] It is understandable that the measurement value can be Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), or other forms of signal quality representation.

[0077] In step 503, the victim device reports at least one first resource index and at least one second resource index, wherein the first resource index indicates a first beam with optimal cross-link interference obtained by cross-link interference measurement.

[0078] Specifically, after step 502, the victim device can obtain the first beam and the measurement values ​​of each beam pair during the beam management process. Since the receiving beam corresponding to the first beam is known during the cross-link interference measurement, the victim device can determine the optimal one or more receiving beams under the first beam. In addition, since the victim device can determine the correspondence between the receiving beam and the transmitting beam through the quasi-co-location relationship obtained through the beam management process, the victim device can determine the second beam corresponding to the one or more receiving beams based on the measurement results of the beam management and the correspondence. The number of second beams can be one or more.

[0079] Then, in step 503, the victim device may indicate the first beam and the second beam to the network device. Specifically, the victim device may send a first resource index indicating the first beam and a second resource index indicating the second beam to the network device.

[0080] In an optional implementation, since both the resource index and the quasi co-location can indicate a beam, the victim device can also send a quasi co-location indicating the first beam and a quasi co-location indicating the second beam to the network device. Specifically, the quasi co-location can be carried in the Terminal Control Interface (TCI) state.

[0081] Furthermore, in step 503, the victim device may report the measurement value of the first beam and the measurement value of the second beam to provide more information to the network device to assist the network device in making a decision.

[0082] In step 504, the victim device receives the target standard co-location. The target standard co-location indicates a resource index for data transmission.

[0083] Specifically, the network device may determine a beam for data transmission based on the first beam and the second beam to take into account both data transmission and cross-link interference.

[0084] For example, Figure 2 Taking the scenario shown as an example, the beam with the best cross-link interference in the transmitting beam of the attacking device is the beam corresponding to the SRS3 resource. Through the above steps 501 to 503, the victim device can report the resource index of SRS 3 (that is, the first resource index) and the resource index of the transmitting beam corresponding to the receiving beam 1 of the victim device in SRS 3 (that is, the second resource index). As a result, the base station 1 can know the receiving beam 1 of the victim device in SRS 3. When the attacking device uses the beam corresponding to the SRS 3 resource to send data, in step 504, the base station 1 can configure the victim device to use the receiving beam 1 to receive data. The base station 1 uses the transmitting beam corresponding to the receiving beam 1 to send data.

[0085] In an embodiment of the present application, the victim device preferentially determines the preferred beam that generates cross-link interference, and then determines the beam pair for data transmission thereon, with low reporting overhead.

[0086] Embodiment 2: The second resource index indicates a third beam obtained through a beam management process, and the first resource index indicates a fourth beam with optimal cross-link interference obtained by performing cross-link interference measurement on the third beam and its corresponding receiving beam.

[0087] Continue to refer to Figure 5 In this embodiment of the present application, the beam indicated by the first resource index and the second resource index reported by the victim device in step 503 is different from the beam indicated by the first resource index and the second resource index in Example 1.

[0088] The third beam in this embodiment may refer to one or more beams configured by the network device for the victim device for beam management during the beam management process.

[0089] Specifically, for each beam pair (the third beam and its corresponding receiving beam) in the beam management process, the victim device performs cross-link interference measurement respectively, and determines the corresponding fourth beam with the best cross-link interference respectively. Then, when reporting, the victim device reports the third beam and the fourth beam together. The number of the third beam can be one or more, and the number of the fourth beam can be one or more.

[0090] Furthermore, in step 503, the victim device may report the measurement value of the third beam and the measurement value of the fourth beam to provide more information to the network device to assist the network device in making a decision.

[0091] In the embodiment of the present application, the information reported by the victim device is richer and more comprehensive, which is conducive to the network device making better decisions and facilitating subsequent scheduling.

[0092] Compared with the prior art in which the victim device only reports the optimal beam in the cross-link interference measurement process, Example 1 and Example 2 jointly report the measurement results of beam management and the measurement results of cross-link interference, so that the network device can know the receiving beam corresponding to the preferred beam of the victim device among the beams that generate cross-link interference, thereby deciding the receiving beam used by the victim device to take into account both data transmission and elimination of cross-link interference.

[0093] It should be noted that the serial numbers of the steps in this embodiment do not limit the execution order of the steps.

[0094] This application also discloses another embodiment, please refer to Figure 6 In step 601, the terminal device receives a first quasi-co-location and / or a second quasi-co-location from a network device.

[0095] In this embodiment, the first quasi-co-location indicates a resource index for cross-link interference measurement, and the second quasi-co-location indicates a resource index for cross-link interference. The resource index may indicate a beam, and specifically may indicate a direction of the beam. That is, the network device may indicate the direction of the beam used to perform cross-link interference measurement to the victim device through the first quasi-co-location, and indicate the direction of the beam generating cross-link interference to the victim device through the second quasi-co-location.

[0096] The following describes in detail different embodiments.

[0097] Embodiment 3: The network device sends a first quasi-co-address to the victim device.

[0098] Please refer to Figure 7 ,In step 701, the victim device performs beam management.

[0099] Specifically, the network device configures the resource index (or quasi-co-location) to be measured for the victim device, and the victim device performs measurement on the beams indicated by these resource indexes (or quasi-co-location), and can obtain the measurement value of each beam pair (that is, the network device's transmitting beam and the corresponding receiving beam), thereby determining the best transmitting beams of several network devices and their corresponding receiving beams.

[0100] In step 702, the network device sends a first quasi co-address to the victim device.

[0101] Specifically, the network device configures a receiving beam for performing cross-link interference measurement to the victim device through the first quasi co-location. The number of the receiving beams may be one or more.

[0102] In step 703, the victim device performs cross-link interference measurement.

[0103] Specifically, the victim device performs cross-link interference measurement on the receiving beam indicated by the first quasi-co-location, and obtains the measured value of the cross-link interference of each transmitting beam of the attacking device, so as to determine the beam with the best cross-link interference, and the number of the beams can be one or more.

[0104] Regarding the method for determining the optimal beam for cross-link interference, reference may be made to the aforementioned embodiment and will not be repeated here.

[0105] In step 704 , the victim device reports a fifth resource index to the network device, wherein the fifth resource index indicates the beam with the best cross-link interference determined in step 703 .

[0106] Through the above manner, the network device can learn the preferred beam with the smallest measured value of cross-link interference under the configured receiving beam.

[0107] In step 705, the network device sends the target standard co-location to the victim device.

[0108] The target standard co-location indicates a resource index for data transmission. The resource index may indicate a beam, and specifically may indicate a direction of the beam. For example, the resource index indicates a transmit beam used by a network device for data transmission, and the victim device determines its corresponding receive beam through the transmit beam, and the victim device uses the receive beam to receive downlink data.

[0109] Specifically, when determining the target standard co-location, the network device can determine the beam used for data transmission in combination with the fifth resource index reported by the victim device to take into account both data transmission and cross-link interference.

[0110] In an embodiment of the present application, by enabling the victim device to receive the first quasi-co-address, the victim device can perform cross-link interference measurement based on the beam corresponding to the resource index indicated by the first quasi-co-address, thereby assisting the network side in making decisions on the basis of reducing the measurement workload.

[0111] In addition, since the receiving beam used to perform cross-link interference measurement is configured by the network device, compared with performing cross-link interference measurement on all receiving beams, the victim device consumes less power and has less reporting overhead, and the measurement mechanism of cross-link interference is more flexible.

[0112] Embodiment 4: The network device sends a second quasi-co-address to the victim device.

[0113] Please refer to Figure 8 ,In step 801, the victim device performs beam management.

[0114] In step 802, the victim device performs cross-link interference measurements.

[0115] In step 803, the network device sends a second quasi co-address to the victim device.

[0116] Specifically, the network device indicates the transmission beam of the attacking device that generates cross-link interference to the victim device through the second quasi-co-location. The number of the beams can be one or more.

[0117] In step 804, the network device sends a third quasi co-location to the victim device.

[0118] Specifically, the network device indicates the transmission beam used for data transmission to the victim device through the third quasi co-location.

[0119] Specifically, after the beam management process of step 801 and the cross-link interference measurement process of step 802, the victim device can learn which receiving beam is best to use in the transmission beam direction that generates cross-link interference, and which receiving beam is best to use in the transmission beam direction for data transmission. After step 803, the victim device can learn the transmission beam of the attacking device; after step 804, the victim device can learn the transmission beam of the network device.

[0120] Furthermore, in step 805, the victim device determines a receiving beam for data transmission according to the resource index indicated by the second quasi co-location and the resource index indicated by the third quasi co-location.

[0121] Specifically, the victim device determines the optimal receiving beam based on the transmitting beam of the attacking device and the transmitting beam of the network device to take into account both data transmission and elimination of cross-link interference.

[0122] In the embodiment of the present application, by enabling the victim device to receive the second quasi-co-address, the victim device can promptly learn of the beam of interference generated by the attacking device on the victim device, thereby enabling the victim device to autonomously decide on the receiving beam to be used based on the second quasi-co-address, so as to take into account both data transmission and elimination of cross-link interference.

[0123] It should be noted that the serial numbers of the steps in this embodiment do not limit the execution order of the steps.

[0124] For more specific implementation methods of the embodiments of the present application, please refer to the aforementioned embodiments, which will not be repeated here.

[0125] Please refer to Fig. 9 , Fig. 9 A communication device 90 is shown, which may include:

[0126] The communication module 901 is used to report a first resource index and a second resource index, where the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

[0127] Furthermore, the communication module 901 may also report the measurement value of the preferred beam indicated by the first resource index and / or the second resource index.

[0128] Furthermore, the communication module 901 may also receive a target standard co-location, where the target standard co-location indicates a resource index for data transmission.

[0129] In a specific implementation, the above-mentioned communication device 90 may correspond to a chip with communication function in a terminal device, such as a system-on-a-chip (SOC), a baseband chip, etc.; or correspond to a chip module with communication function in a terminal device; or correspond to a chip module with a data processing function chip, or correspond to a terminal device.

[0130] In another embodiment, the communication module 901 is used to receive a first resource index and a second resource index.

[0131] Furthermore, the communication module 901 may also receive a measurement value of a preferred beam indicated by the first resource index and / or the second resource index.

[0132] Furthermore, the communication module 901 may also send a target standard co-location, where the target standard co-location indicates a resource index for data transmission.

[0133] In a specific implementation, the above-mentioned communication device 90 may correspond to a chip with communication function in a network device, such as a SOC, a baseband chip, etc.; or correspond to a chip module with communication function in a network device; or correspond to a chip module with a data processing function chip, or correspond to a network device.

[0134] In another embodiment, the communication module 901 is used to receive a first quasi co-location and / or a second quasi co-location, the first quasi co-location indicates a resource index for cross-link interference measurement, and the second quasi co-location indicates a resource index that generates cross-link interference.

[0135] Furthermore, the communication device 90 also includes a processing module (not shown) for performing cross-link interference measurement on the receiving beam corresponding to the resource index indicated by the first quasi-co-location; the communication module 901 is used to report the fifth resource index, and the fifth resource index indicates the beam with optimal cross-link interference.

[0136] Furthermore, the communication module 901 is further configured to receive a third quasi co-location, where the third quasi co-location indicates a resource index for data transmission.

[0137] Further, the processing module determines a receiving beam for data transmission according to a resource index indicated by the second quasi co-location and a resource index indicated by the third quasi co-location.

[0138] In a specific implementation, the above-mentioned communication device 90 may correspond to a chip with communication function in a terminal device, such as a system-on-a-chip (SOC), a baseband chip, etc.; or correspond to a chip module with communication function in a terminal device; or correspond to a chip module with a data processing function chip, or correspond to a terminal device.

[0139] In another embodiment, the communication module 901 is used to send the first quasi co-address and / or the second quasi co-address.

[0140] Furthermore, the communication module 901 is used to receive a fifth resource index, where the fifth resource index indicates a beam with optimal cross-link interference.

[0141] Further, the communication module 901 is used to send a third quasi co-location, where the third quasi co-location indicates a resource index for data transmission.

[0142] In a specific implementation, the above-mentioned communication device 90 may correspond to a chip with communication function in a network device, such as a SOC, a baseband chip, etc.; or correspond to a chip module with communication function in a network device; or correspond to a chip module with a data processing function chip, or correspond to a network device.

[0143] For other related descriptions about the communication device 90 , reference may be made to the related descriptions in the aforementioned embodiments, which will not be repeated here.

[0144] Regarding the various modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, or hardware modules / units, or they can be partially software modules / units and partially hardware modules / units. For example, for various devices and products applied to or integrated in a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. It is implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in hardware such as circuits; for various devices and products applied to or integrated in the terminal equipment, the various modules / units contained therein can be implemented in hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal equipment, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal equipment, and the remaining (if any) modules / units can be implemented in hardware such as circuits.

[0145] The present application also discloses a storage medium, which is a computer-readable storage medium and stores a computer program, which can be executed when the computer program is run. Figures 1 to 3 The steps of the method shown in . The storage medium may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory memory, etc.

[0146] Please refer to Fig.10 The embodiment of the present application also provides a hardware structure diagram of a communication device. The device includes a processor 1001, a memory 1002 and a transceiver 1003.

[0147] Processor 1001 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. Processor 1001 may also include multiple CPUs, and processor 1001 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, or processing cores for processing data (such as computer program instructions).

[0148] The memory 1002 may be a ROM or other types of static storage devices that can store static information and instructions, a RAM or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, and the embodiments of the present application do not impose any restrictions on this. The memory 1002 may exist independently (in this case, the memory 1002 may be located outside the device or inside the device), or it may be integrated with the processor 1001. Among them, the memory 1002 may contain a computer program code. The processor 1001 is used to execute the computer program code stored in the memory 1002, thereby realizing the method provided in the embodiments of the present application.

[0149] The processor 1001, the memory 1002 and the transceiver 1003 are connected via a bus. The transceiver 1003 is used to communicate with other devices or communication networks. Optionally, the transceiver 1003 may include a transmitter and a receiver. The device used to implement the receiving function in the transceiver 1003 can be regarded as a receiver, and the receiver is used to perform the receiving step in the embodiment of the present application. The device used to implement the sending function in the transceiver 1003 can be regarded as a transmitter, and the transmitter is used to perform the sending step in the embodiment of the present application.

[0150] when Fig.10The schematic diagram of the structure shown in FIG. 1 is used to illustrate the structure of the terminal device involved in the above embodiment. The processor 1001 is used to control and manage the actions of the terminal device. For example, the processor 1001 is used to support the terminal device to execute Figure 4 Step 401 in , or Figure 5 Step 501, step 502, step 503 and step 504 in, or Figure 6 Step 601 in , or Figure 7 Step 701, step 702, step 703, step 704 and step 705 in, or Figure 8 The processor 1001 may communicate with other network entities, for example, the network devices described above, through the transceiver 1003. The memory 1002 is used to store program codes and data of the terminal device.

[0151] when Fig.10 The schematic diagram of the structure shown in FIG. 1 is used to illustrate the structure of the network device involved in the above embodiment. The processor 1001 is used to control and manage the actions of the network device. For example, the processor 1001 is used to support the network device to execute Figure 4 Step 401 in , or Figure 5 Steps 503 and 504 in , or Figure 6 Step 601 in , or Figure 7 Step 702, step 704 and step 705 in, or Figure 8 The processor 1001 may communicate with other network entities through the transceiver 1003, for example, with the terminal device mentioned above. The memory 1002 is used to store program codes and data of the network device.

[0152] The embodiment of the present application defines a unidirectional communication link from an access network to a terminal device as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of downlink data is called the downlink direction; and a unidirectional communication link from a terminal device to an access network is an uplink, data transmitted on the uplink is uplink data, and the transmission direction of uplink data is called the uplink direction.

[0153] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0154] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0155] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0156] The "connection" that appears in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0157] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof. When implemented using software, the above embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means.

[0158] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0159] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0160] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0161] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0162] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present application.

[0163] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. A communication method, characterized in that: include: A first resource index and a second resource index are reported, wherein the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

2. The communication method according to claim 1, characterized in that: The first resource index indicates a first beam having the best or largest cross-link interference obtained by cross-link interference measurement.

3. The communication method according to claim 2, characterized in that: The second resource index indicates a second beam corresponding to the optimal receiving beam under the first beam, and the corresponding relationship between the receiving beam and the second beam is determined by a quasi-co-location relationship obtained through a beam management process.

4. The communication method according to claim 1, characterized in that: The second resource index indicates a third beam obtained through a beam management process, and the first resource index indicates a fourth beam with optimal cross-link interference obtained by performing cross-link interference measurement on the third beam and its corresponding receive beam.

5. The communication method according to claim 1, characterized in that: Also includes: Report the measurement value of the preferred beam indicated by the first resource index and / or the second resource index.

6. A communication method, characterized in that: include: A first resource index and a second resource index are received, wherein the first resource index indicates a preferred beam among beams generating cross-link interference, and the second resource index indicates a preferred beam for data transmission.

7. The communication method according to claim 6, characterized in that: The first resource index indicates the first beam with optimal cross-link interference obtained by cross-link interference measurement, and the second resource index indicates the second beam corresponding to the optimal one or more receiving beams under the first beam, and the correspondence between the one or more receiving beams and the second beam is obtained through the beam management process.

8. The communication method according to claim 6, characterized in that: The second resource index indicates a third beam obtained through a beam management process, and the first resource index indicates a fourth beam with optimal cross-link interference obtained by performing cross-link interference measurement on the third beam and its corresponding receive beam.

9. The communication method according to claim 6, characterized in that: Also includes: Receive a measurement value of a preferred beam indicated by the first resource index and / or the second resource index.

10. A communication method, characterized in that: include: A first quasi co-location and / or a second quasi co-location is received, wherein the first quasi co-location indicates a resource index for cross-link interference measurement, and the second quasi co-location indicates a resource index of cross-link interference.

11. The communication method according to claim 10, characterized in that: Also includes: Performing cross-link interference measurement on a receive beam corresponding to the resource index indicated by the first quasi-co-location; A fifth resource index is reported, where the fifth resource index indicates a beam with optimal cross-link interference.

12. The communication method according to claim 10, characterized in that: Also includes: A third quasi-co-location is received, where the third quasi-co-location indicates a resource index for data transmission.

13. The communication method according to claim 12, characterized in that: Also includes: A receiving beam for data transmission is determined according to the resource index indicated by the second quasi co-location and the resource index indicated by the third quasi co-location.

14. A communication method, characterized in that: include: A first quasi co-location and / or a second quasi co-location is sent, wherein the first quasi co-location indicates a resource index used for cross-link interference measurement, and the second quasi co-location indicates a resource index that generates cross-link interference.

15. The communication method according to claim 14, characterized in that: Also includes: A fifth resource index is received, the fifth resource index indicating a beam for optimal cross-link interference.

16. The communication method according to claim 15, characterized in that: Also includes: A third quasi-co-location is sent, where the third quasi-co-location indicates a resource index for data transmission.

17. A communication device, characterized in that: include: A communication module is used to report a first resource index and a second resource index, wherein the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

18. A communication device, characterized in that: include: A communication module is used to receive a first resource index and a second resource index, wherein the first resource index indicates a preferred beam among beams that generate cross-link interference, and the second resource index indicates a preferred beam for data transmission.

19. A communication device, characterized in that: include: The communication module is used to receive a first quasi co-location and / or a second quasi co-location, wherein the first quasi co-location indicates a resource index used for cross-link interference measurement, and the second quasi co-location indicates a resource index that generates cross-link interference.

20. A communication device, characterized in that: include: The communication module is used to send a first quasi co-location and / or a second quasi co-location, wherein the first quasi co-location indicates a resource index used for cross-link interference measurement, and the second quasi co-location indicates a resource index that generates cross-link interference.

21. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the communication method according to any one of claims 1 to 16 are executed.

22. A communication device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the communication method according to any one of claims 1 to 5 or claims 10 to 13.

23. A communication device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the communication method according to any one of claims 6 to 9 or claims 14 to 16.

24. A chip, characterized in that: A computer program is stored on the chip, and when the chip executes the computer program, the steps of the communication method according to any one of claims 1 to 16 are performed.

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