Interference Cancellation Method, Device and Computer-Readable Storage Medium

Abstract

Embodiments of the present application provide an interference cancellation method, device, and computer-readable storage medium. In the method of the embodiments of the present application, when a first communication device determines that there is interference on a first connection beam, the interference indication information indicating the existence of interference on the first connection beam is sent through a second connection beam without interference. The second communication device receives the interference indication information through the second connection beam, can timely learn the situation that there is interference on the first connection beam, and according to the interference indication information, suspends using the first connection beam for communication, so as to avoid unnecessary power consumption of the second communication device and form unnecessary interference signals, achieving the effect of eliminating interference.

Description

Technical Field

[0001] Embodiments of the present application relate to communication technologies, and in particular, to an interference cancellation method, device, and computer-readable storage medium. Background Art

[0002] Unlicensed spectrum refers to public spectrum that can be used by any organization or individual, that is, various devices can freely communicate on unlicensed frequency bands. Currently, in the new frequency bands from 52 GHz to 71 GHz discussed by 3GPP, there is unlicensed spectrum. Therefore, in the scenario where NR (New Radio) coexists with WiFi, there will be signal conflicts, collisions, and interferences.

[0003] In some implementations, there is still no common signaling between NR and WiFi to interact and coordinate resources with each other. At the same time, resource configurations such as bandwidth width and time unit are not necessarily the same. Therefore, when communicating on the unlicensed frequency band, it is easy to interfere with each other. In addition, there is also the situation of hidden node problems. Especially in the high-frequency band from 52 GHz to 71 GHz, since the electromagnetic waves emitted by the system are all narrow beams with very concentrated power, the transmitting end (or receiving end) does not necessarily fully know the existing interference situation of the receiving end (or transmitting end), and there is no clear fallback mechanism. As a result, the interference may not be detected by the system, leading to an increase in communication interference. For example, when the transmitting end detects that the existing resources are idle and sends an indication message to attempt to establish a connection with the receiving end, at this time, the receiving end is in the interference stage of other devices and cannot normally receive any information from the transmitting end, resulting in the transmitting end sending connection establishment information periodically and aperiodically, which causes power consumption and forms unnecessary interference signals; or, the transmitting end knows there is interference, but the receiving end does not know that the transmitting end has interference and still continues to monitor the resources or attempts to send connection establishment information, causing power consumption and forming unnecessary interference signals.

[0004] The foregoing description is provided to give general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] Embodiments of the present application provide an interference cancellation method, device, and computer-readable storage medium to solve the problem that NR and WiFi are prone to interfere with each other when communicating on the unlicensed frequency band.

[0006] In a first aspect, an embodiment of the present application provides an interference cancellation method, which is applied to a first communication device. The first communication device is connected to a second communication device through multiple beams. The method includes:

[0007] If it is determined that there is interference on the first connection beam, the interference indication information is sent through the second connection beam without interference, and the interference indication information is used to indicate that there is interference on the first connection beam.

[0008] Optionally, sending the interference indication information through the second connection beam without interference includes:

[0009] Sending the interference indication information through downlink control information or uplink control information.

[0010] Optionally, the interference indication information includes the index information of the first connection beam and / or the hold silent time of the first connection beam.

[0011] Optionally, the hold silent time is the time when, if there is interference on the first connection beam, it is necessary to temporarily stop using the first connection beam for communication.

[0012] Optionally, the interference indication information includes the index information of the first connection beam and / or the stop transmission identifier of the first connection beam.

[0013] Optionally, the stop transmission identifier is used to indicate to stop using the first connection beam for communication.

[0014] Optionally, if it is determined that the first connection beam is idle, the recovery indication information is sent through the first connection beam or the second connection beam.

[0015] Optionally, the recovery indication information includes the index information of the first connection beam and / or the recovery transmission identifier of the first connection beam.

[0016] Optionally, the recovery transmission identifier is used to indicate to resume using the first connection beam for communication.

[0017] Optionally, when the hold silent time of the first connection beam ends or a recovery communication indication is received, it is determined that the first connection beam is idle, where the recovery communication indication is used to indicate that the original interference communication on the first connection beam ends.

[0018] Optionally, if channel occupancy information is detected on the first connection beam, it is determined that there is interference on the first connection beam.

[0019] Optionally, the channel occupancy information includes at least one of the following:

[0020] Connection request signal, connection feedback signal.

[0021] Optionally, the connection request signal is RTS (Request to send), and the connection feedback signal is CTS (Clear to send).

[0022] Optionally, if it is determined that there is interference on the first connection beam, suspend using the first connection beam for communication.

[0023] In a second aspect, an embodiment of the present application provides an interference cancellation method, which is applied to a second communication device. The second communication device is connected to a first communication device through multiple beams. The method includes:

[0024] Receiving interference indication information through a second connection beam, where the interference indication information is used to indicate that there is interference on the first connection beam;

[0025] According to the interference indication information, suspend using the first connection beam for communication.

[0026] Optionally, the receiving interference indication information through the second connection beam includes:

[0027] Receiving downlink control information including interference indication information through the second connection beam;

[0028] Or,

[0029] Receiving uplink control information including interference indication information through the second connection beam.

[0030] Optionally, the interference indication information includes index information of the first connection beam and / or the hold silent time of the first connection beam.

[0031] Optionally, the hold silent time is the time when there is interference on the first connection beam and it is necessary to temporarily stop using the first connection beam for communication.

[0032] Optionally, the suspending using the first connection beam for communication according to the interference indication information includes:

[0033] Temporarily stop using the first connection beam corresponding to the index information for communication until the hold silent time ends or a resume communication instruction is received.

[0034] Optionally, the interference indication information includes index information of the first connection beam and / or a stop transmission flag of the first connection beam.

[0035] Optionally, the suspending using the first connection beam for communication according to the interference indication information includes:

[0036] According to the stop transmission identifier, stop communicating using the first connection beam corresponding to the index information.

[0037] Optionally, receive recovery indication information through the first connection beam or the second connection beam.

[0038] Optionally, the recovery indication information includes the index information of the first connection beam and / or the recovery transmission identifier of the first connection beam.

[0039] Optionally, according to the recovery transmission identifier, resume communicating using the first connection beam.

[0040] Optionally, according to the interference indication information, pause communicating using the first connection beam, including:

[0041] According to the interference indication information, pause sending data through the first connection beam;

[0042] Or,

[0043] According to the interference indication information, pause listening for the first connection beam.

[0044] In a third aspect, an embodiment of the present application provides an interference cancellation device, which is applied to a first communication device. The first communication device is connected to a second communication device through multiple beams. The device includes:

[0045] A communication module, configured to, if it is determined that there is interference on the first connection beam, send interference indication information through a second connection beam without interference, where the interference indication information is used to indicate that there is interference on the first connection beam.

[0046] Optionally, the communication module is further configured to:

[0047] Send the interference indication information through downlink control information or uplink control information.

[0048] Optionally, the interference indication information includes the index information of the first connection beam and / or the hold silent time of the first connection beam.

[0049] Optionally, the hold silent time is the time when it is necessary to temporarily stop using the first connection beam for communication if there is interference on the first connection beam.

[0050] Optionally, the interference indication information includes the index information of the first connection beam and / or the stop transmission identifier of the first connection beam.

[0051] Optionally, the stop transmission identifier is used to indicate to stop using the first connection beam for communication.

[0052] Optionally, the communication module is further configured to:

[0053] If it is determined that the first connection beam is idle, send recovery indication information through the first connection beam or the second connection beam.

[0054] Optionally, the recovery indication information includes index information of the first connection beam and / or a recovery transmission identifier of the first connection beam.

[0055] Optionally, the recovery transmission identifier is used to indicate resuming communication using the first connection beam.

[0056] Optionally, the apparatus further includes: an interference cancellation module, configured to:

[0057] When the hold silence time of the first connection beam ends or a recovery communication indication is received, determine that the first connection beam is idle, where the recovery communication indication is used to indicate that the original interfering communication on the first connection beam ends.

[0058] Optionally, the interference cancellation module is further configured to:

[0059] If information indicating that the channel is occupied is detected on the first connection beam, determine that there is interference on the first connection beam.

[0060] Optionally, the information indicating that the channel is occupied includes at least one of the following:

[0061] Connection request signal, connection feedback signal.

[0062] Optionally, the connection request signal is RTS, and the connection feedback signal is CTS.

[0063] Optionally, the interference cancellation module is further configured to:

[0064] If it is determined that there is interference on the first connection beam, suspend communication using the first connection beam.

[0065] In a fourth aspect, an embodiment of the present application provides an interference cancellation apparatus, which is applied to a second communication device. The second communication device is connected to a first communication device through multiple beams. The apparatus includes:

[0066] A communication module, configured to receive interference indication information through a second connection beam, where the interference indication information is used to indicate that there is interference on the first connection beam;

[0067] An interference cancellation module, configured to suspend communication using the first connection beam according to the interference indication information.

[0068] Optionally, the communication module is further configured to:

[0069] Receive downlink control information including interference indication information through the second connection beam;

[0070] Or,

[0071] Receive uplink control information including interference indication information through the second connection beam.

[0072] Optionally, the interference indication information includes index information of the first connection beam and / or a silent time of the first connection beam.

[0073] Optionally, the silent time is the time when there is interference in the first connection beam and it is necessary to temporarily stop using the first connection beam for communication.

[0074] Optionally, the interference cancellation module is further configured to:

[0075] Temporarily stop using the first connection beam corresponding to the index information for communication until the silent time ends or a communication resumption indication is received.

[0076] Optionally, the interference indication information includes index information of the first connection beam and / or a stop transmission identifier of the first connection beam.

[0077] Optionally, the interference cancellation module is further configured to:

[0078] Stop using the first connection beam corresponding to the index information for communication according to the stop transmission identifier.

[0079] Optionally, the communication module is further configured to:

[0080] Receive a recovery indication information through the first connection beam or the second connection beam.

[0081] Optionally, the recovery indication information includes index information of the first connection beam and / or a recovery transmission identifier of the first connection beam.

[0082] Optionally, the interference cancellation module is further configured to:

[0083] Resume using the first connection beam for communication according to the recovery transmission identifier.

[0084] Optionally, the interference cancellation module is further configured to:

[0085] Pause sending data through the first connection beam according to the interference indication information;

[0086] Or,

[0087] Pause listening to the first connection beam according to the interference indication information.

[0088] In a fifth aspect, an embodiment of the present application provides a communication device, including: a processor and a memory;

[0089] The memory stores computer-executable instructions;

[0090] When the computer-executable instructions are executed by the processor, the method described in any of the above aspects is implemented.

[0091] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the method described in any of the above aspects.

[0092] For the interference cancellation method, device, and computer-readable storage medium provided by the embodiments of the present application, when a first communication device determines that there is interference on a first connection beam, it sends interference indication information indicating the existence of interference on the first connection beam through a second connection beam without interference. A second communication device receives the interference indication information through the second connection beam, can timely learn about the situation of interference on the first connection beam, and according to the interference indication information, suspend using the first connection beam for communication, thereby avoiding unnecessary power consumption of the second communication device and forming unnecessary interference signals, achieving the effect of interference cancellation. BRIEF DESCRIPTION OF THE DRAWINGS

[0093] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0094] Figure 1 It is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

[0095] Figure 2 It is a schematic diagram of a scenario where NR and WiFi interfere with each other provided by an embodiment of the present application.

[0096] Figure 3 It is a schematic diagram of another scenario where NR and WiFi interfere with each other provided by an embodiment of the present application.

[0097] Figure 4 It is a flowchart of an interference cancellation method provided by Embodiment 1 of the present application.

[0098] Figure 5 It is a schematic diagram of a typical multi-TRP connection scenario provided by an embodiment of the present application.

[0099] Figure 6 It is a schematic diagram of another typical multi-TRP connection scenario provided by an embodiment of the present application.

[0100] Figure 7 This is a flowchart of an interference cancellation method provided in the second embodiment of the present application.

[0101] Figure 8 This is a schematic structural diagram of an interference cancellation device provided in the third embodiment of the present application.

[0102] Figure 9 This is a schematic structural diagram of an interference cancellation device provided in the fourth embodiment of the present application.

[0103] Figure 10 This is a schematic structural diagram of an interference cancellation device provided in the fifth embodiment of the present application.

[0104] Figure 11 This is a schematic structural diagram of a communication device provided in the seventh embodiment of the present application.

[0105] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and more detailed descriptions will be provided hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0106] Here, exemplary embodiments will be described in detail, and their examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0107] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including that element.

[0108] It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to also include the plural forms unless the context clearly dictates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of the features, steps, operations, elements, components, items, kinds, and / or groups, but do not preclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or meaning any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". An exception to this definition occurs only when the combination of elements, functions, steps, or operations are mutually exclusive in some manner.

[0109] The interference cancellation method provided by the embodiments of the present application can be applied to Figure 1 the schematic diagram of the communication system architecture shown in. As Figure 1 shown, the communication system includes: a network device and multiple terminal devices. It is assumed that the multiple terminal devices include terminal device 1, terminal device 2, terminal device 3, and terminal device 4 shown in the figure. It should be noted that Figure 1 the communication system shown in can be applied to different network modes. For example, it can be applied to network modes such as GSM (Global System of Mobile communication), CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), LTE (Long Term Evolution) systems, and future 5G, etc. Optionally, the above communication system may be a system in the scenario of URLLC (Ultra-Reliable and Low Latency Communications) transmission in a 5G communication system.

[0110] Therefore, optionally, the above network device may be a BTS (Base Transceiver Station) and / or base station controller in GSM or CDMA, or an NB (NodeB) and / or RNC (Radio Network Controller) in WCDMA, or an evolved eNB (Evolutional NodeB) or eNodeB in LTE, or a relay station or access point, or a base station (gNB) in the future 5G network, etc. The present application does not limit this here.

[0111] The above terminal device may be a wireless terminal or a wired terminal. A wireless terminal may be a device that provides voice and / or other service data connectivity to a user, a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem. The wireless terminal may communicate with one or more core network devices via a RAN (Radio Access Network). The wireless terminal may be a mobile terminal, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal. For example, it may be a portable, pocket-sized, handheld, computer-integrated, or vehicle-mounted mobile device that exchanges voice and / or data with the wireless access network. For another example, the wireless terminal may also be a PCS (Personal Communication Service) phone, cordless phone, SIP (Session Initiation Protocol) phone, WLL (Wireless Local Loop) station, PDA (Personal Digital Assistant), etc. The wireless terminal may also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, access terminal, user terminal, user agent, user device or user equipment, and is not limited here. Optionally, the above terminal device may also be a smart watch, tablet computer, etc.

[0112] The specific application scenarios of the embodiments of this application are as follows: Currently, for the unlicensed frequency band from 52 GHz to 71 GHz, various devices can communicate freely on the unlicensed frequency band, so there will be signal conflicts, collisions, and interferences. At the same time, considering that the WiFi 802.11ad already has a relevant standard operating in the same unlicensed frequency band with the LBT (Listen before talk) communication method, it is also necessary to consider the coexistence scenario of NR and WiFi. This embodiment takes the 71 GHz high-frequency unlicensed frequency band as an example for illustrative explanation.

[0113] A possible solution: Adopt the WiFi 802.11ad LBT method, such as DCF (Distributed Coordination Function); further, a directional LBT communication method can be adopted. Because high-frequency signals are prone to attenuation and the communication distance is short, it is necessary to compensate for its inherent defects through the way of beamforming. In summary, that is, implement LBT on the basis of directional communication.

[0114] In addition, hidden nodes can also be considered, that is, the sender may not know the current situation of the receiver, and the receiver may be in the interference stage. A receiver-assisted / based LBT can be adopted.

[0115] Another possible solution: Adopt WiFi DCF. In this solution, RTS is a signal used by the sender to establish a connection request with the receiver, and CTS is a signal used by the receiver to feedback the sender's connection request, that is, the feedback information of the receiver after receiving the RTS sent by the sender. The specific process of this solution is as follows:

[0116] Step 1: The sender listens for the DIFS (Distributed Inter-frame Spacing) duration on the resource to be sent. After confirming that the resource is idle, it sends the RTS information.

[0117] Step 2: After receiving the RTS information, the receiver listens for the SIFS (Short Interframe Space) duration on this resource. After confirming that the resource is idle, it sends the CTS information.

[0118] Step 3: When the sender receives the feedback CTS information, it can start data transmission with the receiver.

[0119] Step 4: If an exception occurs, the sender needs to resend the RTS information.

[0120] Among them, the exceptional cases include: the receiving end fails to receive the RTS information normally, so it cannot feedback the CTS information; the CTS information feedback by the receiving end cannot be normally received by the sending end.

[0121] Since there is still no common signaling between NR and WiFi to interact and coordinate resources with each other, and the resource configurations (such as bandwidth width, time unit, etc.) are not necessarily the same, NR and WiFi are prone to interfere with each other when communicating in the unlicensed frequency band.

[0122] In a possible scenario, considering the existence of hidden nodes: the sending end does not necessarily fully know the existing interference situation of the receiving end, and there is no clear fallback mechanism, so the interference may intensify.

[0123] Specifically, when the sending end detects that the existing resources are in an idle state and sends indication information to attempt to establish a connection with the receiving end, the receiving end is in the interference stage of other devices at this time and cannot normally receive any information from the transmitting end, resulting in the transmitting end sending connection establishment information periodically or aperiodically, which causes power consumption at the sending end and forms unnecessary interference signals.

[0124] For example, as Figure 2 and Figure 3 shown in the scenario where NR and WiFi interfere with each other, the WiFi AP (access point) is a WiFi device, TRP#1 and TRP#2 are two TRPs (Transmission Reception Points) of the base station, and UE beam#1 and UE beam#1 are the beams connecting the terminal (UE#1) to TRP#1 and TRP#2 respectively.

[0125] As Figure 2 shown, the terminal (UE#1) receives the RTS signal whose beam emitted by the WiFi AP points to the WiFi UE. The terminal judges that there is an interference source: the terminal (UE#1) establishes a connection with the TRP#1 and TRP#2 of the base station. At this time, the terminal receives the RTS signal sent by the WiFi AP on the beam (UE beam#1) connecting to TRP#1. The terminal learns that the resources in this direction (such as Figure 2 the UE beam#1 filled with diagonal lines in

[0126] will be used and will not be able to communicate with TRP#1 normally. At this time, TRP#1 does not know that the resources (UE beam#1) in this direction will be used because the CTS message sent back by the WiFi UE is not received by TRP#1 due to the limited coverage range. Figure 3As shown in the figure, the direction of the RTS signal initiated by the WiFi AP points to the WiFi UE, and the base station (TRP#1) determines that it is interfered: The terminal establishes a connection with the base station (TRP#1 and TRP#2). At this time, the base station receives the RTS signal sent by the WiFi AP on the beam of TRP#1. The base station learns that the resources in this direction (such as Figure 3 the base station in the hatched part on the beam of TRP#1) will be used and will not be able to communicate with the terminal normally. At this time, the terminal does not know that the resources in this direction will be used because the RTS message sent by the WiFi AP is not received by the terminal due to the limitation of the coverage area.

[0127] The interference cancellation method provided in this application aims at the above scenario. When the first communication device and the second communication device are connected through multiple beams, if the first communication device determines that there is interference on the first connection beam, it sends interference indication information through the second connection beam without interference. The interference indication information is used to indicate that there is interference on the first connection beam, that is, to notify the second communication device through the second connection beam without interference, so that the second communication device can learn that there is interference on the current first connection beam and suspend using the first connection beam for communication. This can avoid the situation where RTS or CTS is not received by the receiving end due to the limitation of the coverage area of different systems, thereby avoiding the power consumption of the second communication device and forming unnecessary interference signals, achieving the purpose of eliminating interference signals.

[0128] The technical solutions of the embodiments of this application and how the technical solutions of this application solve the above technical problems will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the embodiments of this application will be described below with reference to the drawings.

[0129] Figure 4 It is a flowchart of an interference cancellation method provided in Embodiment 1 of this application. As Figure 4 shown, the specific steps of this method are as follows:

[0130] Step S401: If the first communication device determines that there is interference on the first connection beam, it sends interference indication information through the second connection beam without interference. The interference indication information is used to indicate that there is interference on the first connection beam.

[0131] In this embodiment, the first communication device and the second communication device are connected through multiple beams.

[0132] Among them, the first communication device can be a terminal device or a network device, and can act as a sender or a receiver. When the first communication device communicates with the second communication device, the first communication device can act as a sender or a receiver, and the second communication device can also act as a sender or a receiver. When the first communication device acts as a sender, the second communication device is the receiver; when the first communication device acts as a receiver, the second communication device is the sender. In addition, the first communication device can be a terminal device or a network device. When the first communication device is a terminal device, the second communication device is a network device; when the first communication device is a network device, the second communication device is a terminal device.

[0133] In this embodiment, during the communication process between the first communication device and the second communication device, if it is determined that there is interference on the first connection beam, then the second communication device sends interference indication information through the second connection beam without interference, so as to notify the second communication device of the situation that there is interference on the current first connection beam.

[0134] Step S402: The second communication device receives interference indication information through the second connection beam, and the interference indication information is used to indicate that there is interference on the first connection beam.

[0135] During the communication process with the first communication device, the second communication device receives interference indication information used to indicate that there is interference on the first connection beam through the second connection beam, and can learn about the situation that there is interference on the first connection beam.

[0136] Step S403: The second communication device suspends using the first connection beam for communication according to the interference indication information.

[0137] After receiving the interference indication information, the second communication device can determine that there is interference on the current first connection beam and suspend using the first connection beam for communication, so as to avoid power consumption and unnecessary interference caused by continuing to send or monitor data through the first connection beam.

[0138] In this embodiment, if the first communication device is a sender, when there is interference from other devices on one set of connection resources (the first connection beam), the sender notifies the receiver (the second communication device) to suspend communication (monitoring) on the interfered resource through another set of connection resources (the second connection beam); if the first communication device is a receiver, when there is interference from other devices on one set of connection resources (the first connection beam), the receiver notifies the sender to suspend communication (sending) on the interfered resource through another set of connection resources (the second connection beam); thus, in a scenario where there are multiple sets of connection resources (connection resources in multiple directions and can be complementary) between the first communication device and the second communication device, a fallback mechanism is added to avoid interference.

[0139] In the embodiment of the present application, when the first communication device determines that there is interference on the first connection beam, interference indication information for indicating that there is interference on the first connection beam is sent through the second connection beam where no interference exists. The second communication device receives the interference indication information through the second connection beam, and can promptly learn that there is interference on the first connection beam. According to the interference indication information, the use of the first connection beam for communication is suspended, thereby avoiding unnecessary power consumption of the second communication device and formation of unnecessary interference signals, thereby achieving the effect of eliminating interference.

[0140] In the high-frequency 71GHz band, part of the band overlaps with 802.11ad, so the channel access problem is one of the first problems to be solved in the high-frequency system. RTS / CTS, as a technology that has been used in 802.11ad, has attracted widespread attention. In the new high-frequency scenario, the channel access method based on RTS / CTS needs to be reconsidered. Figure 5 A typical multi-TRP connection scenario in a high-frequency beam-based system is provided, such as Figure 5 In the scenario shown, the NR base station uses multiple TRPs (such as Figure 5 TRP / panel 1 and TRP / panel 2) and NR UE (as shown in Figure 5 NR UE 1 shown in the figure is connected. At this time, NR UE 1 can form two receiving beams to receive signals from TRP / panel 1 and TRP / panel 2 respectively. At this time, there is a hidden WIFI node WIFI AP between TRP / panel 1 and NR UE 1. At this time, WIFI AP sends RTS to WIFI UE 2. Because the receiving beams are in the same direction, NR UE 1 can receive the RTS, so it can remain silent and temporarily stop communicating with the base station. After receiving the RTS sent by WIFI AP, WIFI UE 2 will return a CTS message to WIFI AP, but due to the limitation of coverage range, CTS may not be received by the NR base station, so TRP / panel 1 may continue to send messages to NR UE 1 on this beam, which will cause interference to WIFI communication.

[0141] Figure 6 Another typical multi-TRP connection scenario in high-frequency beam-based systems is provided, such as Figure 6 In the scenario shown, the NR base station uses multiple TRPs (such as Figure 6 TRP / panel 1 and TRP / panel 2) and NR UE (as shown in Figure 6The NR UE connection shown in [Figure 0], at this time, the NR UE can form two receiving beams to receive signals from TRP / panel 1 and TRP / panel 2 respectively. At this time, there is a hidden node WIFI AP of WIFI on the side of TRP / panel 1 away from the NR UE 1. TRP / panel 1 is in the middle of the WIFI AP and the WIFI UE 2. At this time, the WIFI AP sends an RTS to the WIFI UE 2. Due to the limitation of the coverage range, the NR UE 1 cannot receive the RTS of the WIFI AP; after receiving the RTS, the WIFI UE 2 sends a CTS to the WIFI AP. Because the receiving beams are in the same direction, the TRP / panel 1 can receive this CTS, that is, the TRP / panel 1 can receive the CTS of the WIFI UE 2, but the NR UE 1 cannot receive the RTS of the WIFI AP. Therefore, at this time, the NR UE 1 may continue to send messages to the TRP / panel 1 on this beam, which may cause interference to the WIFI communication.

[0142] Figure 7 This is a flowchart of an interference cancellation method provided in the second embodiment of the present application. On the basis of the above-mentioned first embodiment, in this embodiment, based on Figure 5 Or Figure 6 The application scenarios shown are used to exemplarily illustrate the specific implementation manner of the interference cancellation method provided in this embodiment. As Figure 7 Shown, the specific steps of this method are as follows:

[0143] Step S501: If the first communication device detects that the channel is occupied information on the first connection beam, it determines that there is interference on the first connection beam.

[0144] In this embodiment, the first communication device and the second communication device are connected through multiple beams. Specifically, it can be applied to the multi-beam connection scenario in the high-frequency unlicensed band. Among them, the multi-beams can be implemented through multiple TRPs or a single TRP. This embodiment does not make specific limitations here.

[0145] Among them, the first connection beam is used to refer to the connection beam with interference, and the second connection beam is used to refer to the connection beam without interference. At different times, the situation of whether there is interference on each connection beam may change, and the connection beams included in the first connection beam and the second connection beam may also change.

[0146] There may be one or more first connection beams with interference. If there are multiple first connection beams with interference currently, the first communication device can choose to send interference indication information through other second connection beams without interference.

[0147] Among them, the channel occupancy information includes at least one of the following: connection request signal, connection feedback signal.

[0148] Optionally, the connection request signal is RTS, and the connection feedback signal is CTS. The channel occupancy information may also include other information such as specific symbols, which is not specifically limited herein in this embodiment.

[0149] Exemplarily, detecting the channel occupancy information on the first connection beam may be receiving an RTS signal, or a CTS signal, or a specific symbol sent by the WiFi AP on the first connection beam; or the signal strength detected on the first connection beam is higher than a threshold.

[0150] Among them, the specific symbol and the threshold can be configured and adjusted according to the actual application scenario, which is not specifically limited herein in this embodiment.

[0151] Step S502, if it is determined that there is interference on the first connection beam, the first communication device suspends using the first connection beam for communication.

[0152] This step is executed when it is determined that there is interference on the first connection beam, and it may be before step S503, or after step S503, which is not specifically limited herein in this embodiment.

[0153] When the first communication device determines that there is interference on the first connection beam, to avoid unnecessary power consumption and interference, it suspends using the first connection beam for communication.

[0154] In this step, the first communication device suspending using the first connection beam for communication includes: suspending sending data through the first connection beam; and / or, suspending listening to the first connection beam.

[0155] When the first communication device determines that the first connection beam is idle, it resumes using the first connection beam for communication.

[0156] Step S503, the first communication device sends interference indication information through a second connection beam without interference, and the interference indication information is used to indicate that there is interference on the first connection beam.

[0157] Optionally, the first communication device may send the interference indication information through downlink control information or uplink control information.

[0158] For example, a control field may be set in DCI (Downlink Control Information) or UCI (Uplink Control Information), and the interference indication information is sent through this control field on other second connection beams without interference.

[0159] Step S504: The second communication device receives interference indication information through the second connection beam, where the interference indication information is used to indicate that there is interference in the first connection beam.

[0160] Optionally, the second communication device receiving interference indication information through the second connection beam includes:

[0161] The second communication device receives downlink control information containing interference indication information through the second connection beam; or the second communication device receives uplink control information containing interference indication information through the second connection beam.

[0162] Step S505: The second communication device suspends communication using the first connection beam according to the interference indication information.

[0163] In a possible implementation manner, the interference indication information includes the index information of the first connection beam and / or the hold silent time of the first connection beam. The hold silent time is the time when it is necessary to temporarily stop using the first connection beam for communication if there is interference in the first connection beam, and the index information of the first connection beam is used to indicate which beam has interference.

[0164] The first communication device determines that the first connection beam is idle and resumes communication using the first connection beam when the hold silent time of the first connection beam ends or it receives a communication resumption indication.

[0165] Among them, the communication resumption indication is used to indicate that the original interfering communication on the first connection beam ends. For example, the communication resumption indication can be a signaling sent to the first communication device to resume data transmission on the first connection beam, indicating that the original interfering communication on the first connection beam ends. Specifically, who sends the indication to it or what specific information the communication resumption indication contains is not specifically limited in this embodiment.

[0166] In this step, the second communication device temporarily stops using the first connection beam corresponding to the index information for communication until the hold silent time ends. The second communication device resumes communication using the first connection beam when the hold silent time of the first connection beam ends.

[0167] In another possible implementation manner, the interference indication information includes the index information of the first connection beam and / or the stop transmission flag of the first connection beam. The stop transmission flag is used to indicate to stop using the first connection beam for communication.

[0168] Specifically, the second communication device stops communicating using the first connection beam corresponding to the index information according to the stop transmission flag; that is, when the second communication device receives interference indication information including the stop transmission flag, it stops communicating using the first connection beam corresponding to the index information in the interference indication information.

[0169] When the holding silence time of the first connection beam ends or the first communication device receives an indication to resume communication, the first communication device determines that the first connection beam is idle and resumes communicating using the first connection beam.

[0170] Furthermore, if the first communication device determines that the first connection beam is idle, it sends resume indication information through the first connection beam or the second connection beam. The resume indication information includes the index information of the first connection beam and / or the resume transmission flag of the first connection beam. The resume transmission flag is used to indicate resuming communication using the first connection beam.

[0171] The second communication device receives the resume indication information through the first connection beam or the second connection beam. The second communication device resumes communicating using the first connection beam according to the resume transmission flag. That is, when the second communication device receives resume indication information including the resume transmission flag, it resumes communicating using the first connection beam corresponding to the index information in the resume indication information.

[0172] In this step, the second communication device suspends communicating using the first connection beam according to the interference indication information, including: suspending sending data through the first connection beam according to the interference indication information; or suspending listening to the first connection beam according to the interference indication information.

[0173] Exemplarily, if the second communication device is a sending end, it suspends sending data through the first connection beam according to the interference indication information. If the second communication device is a receiving end, it suspends listening to the first connection beam according to the interference indication information.

[0174] Optionally, one bit can be used to store the stop transmission flag or the resume transmission flag. For example, "0" represents the stop transmission flag and "1" represents the resume transmission flag.

[0175] Step S506: When the holding silence time of the first connection beam ends or the first communication device receives an indication to resume communication, the first communication device determines that the first connection beam is idle and resumes communicating using the first connection beam.

[0176] Step S507: When the holding silence time of the first connection beam ends or the second communication device receives resume indication information including the resume transmission flag, the second communication device resumes communicating using the first connection beam.

[0177] Exemplarily, based onFigure 5 or Figure 6 the scenario shown, to solve the technical problems existing in the scenario such as Figure 5 or Figure 6 In the multi-beam connection scenario in the high-frequency unlicensed band, there are currently multiple beam connections for the base station or the terminal. When RTS or CTS is detected on one or more beams (not all connected beams), in the corresponding uplink or downlink control information on one or more beams that have not received RTS or CTS, a message containing the silent time and beam index information on the corresponding RTS or CTS is sent. After receiving this message field, the base station or the terminal knows on which beam it needs to remain silent (not send any signal); alternatively, in the corresponding uplink or downlink control information on one or more beams that have not received RTS or CTS, an indication information and the beam index information of the corresponding RTS or CTS are sent, where the indication information includes a stop transmission flag or a resume transmission flag. After receiving this indication information and beam index information, the base station or the terminal knows on which beam it needs to stop or resume data transmission.

[0178] For example, the RTS field can be as follows:

[0179] 1.Frame Control

[0180] 2.Duration

[0181] 3.RA (Receiver Address)

[0182] 4.TA (Transmitter Address)

[0183] 5.FCS (Frame Check Sequence)

[0184] The CTS field can be as follows:

[0185] 1.Frame Control

[0186] 2.Duration

[0187] 3.RA

[0188] 4.FCS

[0189] Among them, Frame Control indicates whether the transmitted data comes from a control frame or a management frame. Duration indicates the time that the receiving end needs to wait and remain silent. When the terminal or the base station receives RTS / CTS, this piece of information (Duration) together with the corresponding TRP or beam index (TRP / beam Index) is sent to the receiving end on other interference-free beams through UCI or DCI, so that the receiving end can know the time for which the information needs to remain silent, avoiding the situation where RTS or CTS is not received by the receiving end due to coverage limitations.

[0190] Then, as Figure 5 shown, there is a beam on TRP / panel 1 connected to NR UE 1. At this time, there is interference with the WIFI AP. After NR UE 1 receives the RTS sent by the WIFI AP, it immediately forms the field

duration TRP / beam 1

[0191] For example, one bit can be used to store the stop transmission flag or the resume transmission flag. For example, "0" represents the stop transmission flag and "1" represents the resume transmission flag.

[0192] Then, as Figure 5 shown, there is a beam on TRP / panel 1 connected to NR UE 1. At this time, there is interference with the WIFI AP. After NR UE 1 receives the RTS sent by the WIFI AP, it uses the interference indication information to send the field 【0, TRP / beam#1】 to tell the base station to temporarily stop communicating on TRP#1. When NR UE 1 determines that TRP#1 is idle, it sends the field 【1, TRP / beam#1】 to tell the base station that communication can be resumed on this TRP. The method for NR UE 1 to determine that the channel is idle includes but is not limited to the following ways: judging that the silent time has passed according to the "Duration" in the RTS / CTS received by itself, or according to the signaling that can resume data transmission received.

[0193] Exemplarily, in the case of multi-beam connection, the first communication device can internally save a vector to save the interference situation of the corresponding connected beams and the corresponding time for which it needs to remain silent.

[0194] For example, as Figure 5There are two connection beams in the NR UE 1 shown in the figure, and the NR UE 1 can store the information shown in Table 1 below:

[0195] Table 1

[0196] TRP 1 NAV TRP 2 No

[0197] After the NR UE 1 receives the RTS on the beam of the TRP 1, it immediately stores the NAV (Network Allocation Vector), indicating that there is interference on the beam of the TRP 1; at this time, the NR UE 1 can select a beam without interference according to this table to send a message, for example, select the beam on the TRP 2 to send a message.

[0198] In the embodiment of the present application, in the high-frequency unlicensed band, in the case of multi-beam connection, when there is co-frequency interference in one or more beams, interference indication information is sent through other beams without interference. The interference indication information includes the index information of the connection beam with interference and / or the corresponding silent time, or the index information of the connection beam with interference and / or the stop / resume transmission identifier; the interference indication information can be sent through UCI or DCI; in this way, the receiving end can know the time to keep silent, avoiding the situation that the RTS or CTS is not received by the receiving end due to coverage limitations, resulting in unnecessary power consumption of the receiving end and the formation of unnecessary interference signals, achieving the effect of eliminating interference.

[0199] Figure 8 It is a schematic structural diagram of an interference cancellation device provided in Embodiment 3 of the present application. The interference cancellation device provided in the embodiment of the present application can execute the processing flow executed by the first communication device in Embodiment 1. The first communication device and the second communication device are connected through multiple beams. As Figure 8 shown, the interference cancellation device 80 includes: a communication module 801.

[0200] Specifically, the communication module 801 is configured to, if it is determined that there is interference on the first connection beam, send interference indication information through the second connection beam without interference, and the interference indication information is used to indicate that there is interference on the first connection beam.

[0201] The interference cancellation device provided in the embodiment of the present application can specifically be used to execute the method flow executed by the first communication device in the above Embodiment 1, and the specific functions are not described herein again.

[0202] In an embodiment of the present application, when a first communication device determines that there is interference on a first connection beam, it sends interference indication information indicating the existence of interference on the first connection beam through a second connection beam without interference. The second communication device receives the interference indication information through the second connection beam, can timely learn about the situation that there is interference on the first connection beam, and according to the interference indication information, suspends using the first connection beam for communication, so as to avoid causing unnecessary power consumption of the second communication device and forming unnecessary interference signals, achieving the effect of eliminating interference.

[0203] Figure 9 FIG. 4 is a schematic structural diagram of an interference cancellation device provided in Embodiment 4 of the present application. On the basis of the above Embodiment 3, in this embodiment, the communication module 801 is further configured to:

[0204] Send interference indication information through downlink control information or uplink control information.

[0205] Optionally, the interference indication information includes the index information of the first connection beam and / or the hold silent time of the first connection beam.

[0206] Wherein, the hold silent time is the time when, if there is interference on the first connection beam, it is necessary to temporarily stop using the first connection beam for communication.

[0207] Optionally, the interference indication information includes the index information of the first connection beam and / or the stop transmission flag of the first connection beam.

[0208] Wherein, the stop transmission flag is used to indicate to stop using the first connection beam for communication.

[0209] Optionally, the communication module 801 is further configured to:

[0210] If it is determined that the first connection beam is idle, send recovery indication information through the first connection beam or the second connection beam.

[0211] Wherein, the recovery indication information includes the index information of the first connection beam and / or the recovery transmission flag of the first connection beam. The recovery transmission flag is used to indicate to resume using the first connection beam for communication.

[0212] Optionally, as Figure 9 shown, the interference cancellation device 80 further includes: The interference cancellation module 802 is configured to:

[0213] When the hold silent time of the first connection beam ends or a recovery communication indication is received, determine that the first connection beam is idle, wherein the recovery communication indication is used to indicate that the original interference communication on the first connection beam ends.

[0214] Optionally, the interference cancellation module 802 is further configured to:

[0215] If channel occupancy information is detected on the first connection beam, it is determined that there is interference on the first connection beam.

[0216] Optionally, the channel occupancy information includes at least one of the following:

[0217] Connection request signal, connection feedback signal.

[0218] Optionally, the connection request signal is RTS and the connection feedback signal is CTS.

[0219] Optionally, the interference cancellation module 802 is further configured to:

[0220] If it is determined that there is interference on the first connection beam, suspend using the first connection beam for communication.

[0221] The interference cancellation device provided by the embodiments of the present application can specifically be used to execute the method flow performed by the first communication device in the second embodiment above, and the specific functions are not elaborated here.

[0222] In the embodiments of the present application, in the high-frequency unlicensed band, in the case of multi-beam connection, when there is co-frequency interference in one or more beams, interference indication information is sent through other beams without interference. The interference indication information includes the index information of the connection beam with interference and / or the corresponding silent holding time, or the index information of the connection beam with interference and / or the stop / resume transmission identifier; the interference indication information can be sent through UCI or DCI; in this way, the receiving end can know the time to keep silent, avoiding the situation where the RTS or CTS is not received by the receiving end due to coverage limitations, resulting in unnecessary power consumption of the receiving end and the formation of unnecessary interference signals, achieving the effect of interference cancellation.

[0223] Figure 10 It is a schematic structural diagram of an interference cancellation device provided by the fifth embodiment of the present application. The interference cancellation device provided by the embodiments of the present application can execute the processing flow performed by the second communication device in the first embodiment. The first communication device and the second communication device are connected through multiple beams. As Figure 10 shown, the interference cancellation device 90 includes: a communication module 901 and an interference cancellation module 902.

[0224] Specifically, the communication module 901 is configured to receive interference indication information through the second connection beam, and the interference indication information is used to indicate that there is interference on the first connection beam.

[0225] The interference cancellation module 902 is configured to suspend using the first connection beam for communication according to the interference indication information.

[0226] The interference cancellation device provided by the embodiment of the present application can be specifically used to execute the method flow performed by the second communication device in the first embodiment above, and the specific functions are not described herein again.

[0227] In the embodiment of the present application, when the first communication device determines that there is interference on the first connection beam, it sends interference indication information indicating the existence of interference on the first connection beam through the second connection beam without interference. The second communication device receives the interference indication information through the second connection beam, can timely learn the situation that there is interference on the first connection beam, and according to the interference indication information, suspends using the first connection beam for communication, so as to avoid unnecessary power consumption of the second communication device and form unnecessary interference signals, achieving the effect of eliminating interference.

[0228] Based on the above embodiment five, in this embodiment six, the communication module 901 is further configured to:

[0229] Receive downlink control information including interference indication information through the second connection beam; or receive uplink control information including interference indication information through the second connection beam.

[0230] Optionally, the interference indication information includes index information of the first connection beam and / or the hold silent time of the first connection beam.

[0231] Wherein, the hold silent time is the time when there is interference on the first connection beam and it is necessary to temporarily stop using the first connection beam for communication.

[0232] Optionally, the interference cancellation module 902 is further configured to:

[0233] Temporarily stop using the first connection beam corresponding to the index information for communication until the hold silent time ends or a resume communication indication is received.

[0234] Optionally, the interference indication information includes index information of the first connection beam and / or the stop transmission flag of the first connection beam.

[0235] Optionally, the interference cancellation module 902 is further configured to:

[0236] Stop using the first connection beam corresponding to the index information for communication according to the stop transmission flag.

[0237] Optionally, the communication module 901 is further configured to:

[0238] Receive resume indication information through the first connection beam or the second connection beam.

[0239] Wherein, the resume indication information includes index information of the first connection beam and / or the resume transmission flag of the first connection beam.

[0240] Optionally, the interference cancellation module 902 is further configured to:

[0241] According to the resumed transmission identifier, resume communication using the first connection beam.

[0242] Optionally, the interference cancellation module 902 is further configured to:

[0243] According to the interference indication information, suspend sending data through the first connection beam; or, according to the interference indication information, suspend listening on the first connection beam.

[0244] The interference cancellation device provided by the embodiments of the present application can specifically be used to execute the method flow performed by the second communication device in the second embodiment above, and the specific functions are not elaborated here.

[0245] In the embodiments of the present application, in the high-frequency unlicensed band, in the case of multi-beam connection, when there is co-frequency interference in one or more beams, interference indication information is sent through other beams without interference. The interference indication information includes the index information of the connection beam with interference and / or the corresponding silent time, or the index information of the connection beam with interference and / or the stop / resume transmission identifier; the interference indication information can be sent through UCI or DCI; in this way, the receiving end can know the time to keep silent, avoiding the situation where RTS or CTS is not received by the receiving end due to coverage limitations, resulting in unnecessary power consumption of the receiving end and the formation of unnecessary interference signals, achieving the effect of eliminating interference.

[0246] Figure 11 It is a schematic structural diagram of a communication device provided for Embodiment 7 of the present application. As Figure 11 shown, the communication device includes: a processor 1001 and a memory 1002. The memory 1002 stores computer-executable instructions. Among them, the processor 1001 executes the computer-executable instructions stored in the memory 1002, so that the processor 1001 executes the method flow performed by the first communication device or the second communication device in any of the above method embodiments.

[0247] In the embodiments of the present application, when the first communication device determines that there is interference on the first connection beam, the interference indication information indicating that there is interference on the first connection beam is sent through the second connection beam without interference. The second communication device receives the interference indication information through the second connection beam, can timely learn the situation that there is interference on the first connection beam, and according to the interference indication information, suspend using the first connection beam for communication, thereby avoiding unnecessary power consumption of the second communication device and the formation of unnecessary interference signals, achieving the effect of eliminating interference.

[0248] The present application also provides a computer storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method executed by the first communication device or the second communication device in any of the above method embodiments are implemented.

[0249] The embodiments of the present application also provide a computer program product, which includes computer program code. When the computer program code runs on a computer, the computer is enabled to execute the methods in the above various possible implementation manners.

[0250] The embodiments of the present application also provide a chip, which includes a memory and a processor. The memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the device equipped with the chip executes the methods in the above various possible implementation manners.

[0251] It should be noted that in this article, step codes such as S502 and S503 are adopted. The purpose is to more clearly and briefly express the corresponding content and do not constitute a substantial limitation in order. Those skilled in the art may execute S503 first and then S502 during specific implementation, etc., but these should all be within the protection scope of the present application.

[0252] It should be understood that although the steps in the flowcharts in the above embodiments are sequentially shown according to the indications of the arrows, these steps do not necessarily need to be executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict order limitation, and they can be executed in other orders. Moreover, at least a part of the steps in the figure may include multiple sub-steps or multiple stages. These sub-steps or stages do not necessarily need to be executed at the same moment, but can be executed at different moments, and their execution order does not necessarily need to be sequential, but can be executed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

[0253] After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation manners of the present application. The embodiments of the present application are intended to cover any variations, uses, or adaptive changes of the present application. These variations, uses, or adaptive changes follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0254] It should be understood that the present application is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A method for interference cancellation, wherein, Applied to a first communication device, which is connected to a second communication device through multiple beams, the method includes: If it is determined that there is interference on a first connection beam, interference indication information is sent through a second connection beam without interference, and the interference indication information is used to indicate that there is interference on the first connection beam; Wherein, if information indicating that the channel is occupied is detected on the first connection beam, it is determined that there is interference on the first connection beam; Wherein, detecting information indicating that the channel is occupied on the first connection beam includes receiving a request-to-send (RTS) signal sent by an interfering Wi-Fi access point (AP) on the first connection beam, or being able to send a clear-to-send (CTS) signal; Wherein, the interference indication information includes index information of the first connection beam and a stop transmission flag of the first connection beam, and the stop transmission flag is used to indicate to stop using the first connection beam for communication; Wherein, the method further includes: If it is determined that the first connection beam is idle, recovery indication information is sent through the first connection beam, wherein the recovery indication information includes index information of the first connection beam and a recovery transmission flag of the first connection beam, and the recovery transmission flag is used to indicate to resume using the first connection beam for communication.

2. The method according to claim 1, wherein Sending the interference indication information through a second connection beam without interference includes: Sending the interference indication information through downlink control information or uplink control information.

3. The method according to claim 1, wherein The interference indication information further includes a hold silent time of the first connection beam.

4. The method according to claim 3, wherein, The hold silent time is the time when, if there is interference on the first connection beam, it is necessary to temporarily stop using the first connection beam for communication.

5. The method according to claim 3, wherein, It further includes: When the hold silent time of the first connection beam ends or a recovery communication indication is received, it is determined that the first connection beam is idle, wherein the recovery communication indication is used to indicate that the original interfering communication on the first connection beam has ended.

6. The method according to any one of claims 1 to 5, wherein It further includes: If it is determined that there is interference on the first connection beam, suspend using the first connection beam for communication.

7. A method for interference cancellation, wherein, Applied to a second communication device, which is connected to the first communication device through multiple beams, the method includes: Receiving interference indication information through a second connection beam, and the interference indication information is used to indicate that there is interference on a first connection beam; Suspending using the first connection beam for communication according to the interference indication information; Wherein, if the first communication device detects information indicating that the channel is occupied on the first connection beam, it is determined that there is interference on the first connection beam; Wherein, the first communication device detecting information indicating that the channel is occupied on the first connection beam includes receiving a request-to-send (RTS) signal sent by an interfering Wi-Fi access point (AP) on the first connection beam, or being able to send a clear-to-send (CTS) signal; Wherein, the interference indication information includes index information of the first connection beam and a stop transmission flag of the first connection beam, and according to the stop transmission flag, stop using the first connection beam corresponding to the index information for communication; Wherein, the method further includes: Receiving recovery indication information through the first connection beam, where the recovery indication information includes index information of the first connection beam and a recovery transmission identifier of the first connection beam, and according to the recovery transmission identifier, resume communication using the first connection beam.

8. The method according to claim 7, wherein The receiving interference indication information through the second connection beam includes: Receiving downlink control information including interference indication information through the second connection beam; Or, Receiving uplink control information including interference indication information through the second connection beam.

9. The method according to claim 7, wherein The interference indication information further includes a silent time of the first connection beam.

10. The method according to claim 9, wherein The silent time is the time when there is interference in the first connection beam and it is necessary to temporarily stop using the first connection beam for communication.

11. The method according to claim 10, wherein, The pausing of using the first connection beam for communication according to the interference indication information includes: Temporarily stopping using the first connection beam corresponding to the index information for communication until the silent time ends or a resume communication indication is received.

12. The method according to any one of claims 7 to 11, wherein, The pausing of using the first connection beam for communication according to the interference indication information includes: Pausing sending data through the first connection beam according to the interference indication information; Or, Pausing listening to the first connection beam according to the interference indication information.

13. A communication device, wherein, Includes: A processor and a memory; The memory stores computer-executable instructions; When the computer-executable instructions are executed by the processor, the method described in claim 1 is implemented.

14. A computer-readable storage medium, wherein, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by the processor, they are used to implement the method described in claim 1.

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