Communication method and related device

Abstract

The invention discloses a communication method and a related device, and relates to the technical field of wireless communication. The method is applied to a first communication device and comprises the steps that first information is received, the first information is used for indicating a second communication device to support bypass branch switching, branches of the second communication device comprise a first branch and a bypass branch corresponding to the first branch, the first branch is a branch where a radio frequency filter is located, and the bypass branch corresponds to the first branch; the signal loss of the bypass branch is smaller than that of the first branch; sending second information to a second communication device, wherein the second information comprises resources for performing interference measurement on the bypass branch; and transmitting a reference signal on the resource, wherein the reference signal is used for determining interference on the bypass branch. The interference measurement method and device are used for effectively improving the accuracy and convenience of interference measurement.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a communication method and related devices. Background Art

[0002] In a wireless communication system, a radio frequency (RF) filter is one of the key components of the RF front-end of a receiver. Its main function is to suppress out-of-band interference and prevent various blocking signals from significantly deteriorating the sensitivity of the receiving channel. However, when a user equipment (UE) has no strong need for out-of-band interference suppression, the role of the RF filter is not significant, and it will also bring additional insertion loss, group delay and other problems. To improve the problems caused by the above RF filter, the prior art can design a bypass branch for the branch where the RF filter is located. The bypass branch has lower insertion loss compared to the branch where the RF filter is located, and can improve the noise figure and power consumption.

[0003] Whether to enable the bypass branch to receive signals depends on the implementation of the UE. For example, the UE needs to introduce an additional phase-locked loop (PLL) to measure the interference of the branch where the RF filter is located. If the interference is small, the UE can use the bypass branch to receive signals. Among them, the PLL is a feedback control circuit, usually composed of a phase detector, a loop filter and a voltage-controlled oscillator. Its implementation complexity is high, and the PLL is mainly used to measure the interference in the frequency range corresponding to the out-of-band PLL, and it is difficult to detect the interference in other frequency ranges, which will lead to incomplete final interference measurement.

[0004] Therefore, how to measure interference more accurately and conveniently is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] This application provides a communication method and related devices, which can effectively improve the accuracy and convenience of interference measurement.

[0006] The following introduces this application from different aspects. It should be understood that the implementation manners and beneficial effects of the following different aspects can be referred to each other.

[0007] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a first communication device. The first communication device may be an access network device (such as a base station, etc.), or a communication module or component of the access network device (for example, a module, a communication module, a circuit or chip responsible for communication functions (such as a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip or a system-in-package (SIP) chip containing a modem core), or a logic module or chip that can implement all or part of the functions of the access network device, etc. The method includes: receiving first information, where the first information is used to indicate that a second communication device supports bypass branch switching. The branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where the radio frequency filter is located, and the signal loss of the bypass branch is less than the signal loss of the first branch; sending second information to the second communication device, where the second information includes resources for performing interference measurement on the bypass branch; and sending a reference signal on the resources, where the reference signal is used to determine the interference on the bypass branch.

[0008] Among them, the interference on the bypass branch is essentially the interference received on the bypass branch, which can be represented by the received power of the reference signal.

[0009] In the above solution, the second information sent by the first communication device to the second communication device may include resources specifically for performing interference measurement on the bypass branch. That is to say, the embodiment of the present application can specifically configure resources for the interference measurement of the bypass branch. Subsequently, by sending a reference signal on these resources, the interference on the bypass branch can be determined. The entire process does not require the introduction of a phase-locked loop, which can effectively reduce the implementation complexity. In addition, using a reference signal to determine the interference on the bypass branch can detect all possible interference frequencies, rather than only the interference within the frequency range corresponding to the phase-locked loop. This makes the interference measurement more comprehensive and improves the accuracy of the interference measurement.

[0010] In a possible implementation manner, the bypass branch includes a second branch and / or a third branch. The second branch does not include a filter, the third branch is the branch where the low-pass filter is located, and the signal loss of the second branch is less than the signal loss of the third branch.

[0011] In the above implementation manner, the number of bypass branches is at least one. Subsequently, by determining the interference received by each of the at least one bypass branch, the most suitable branch can be more flexibly selected to replace the first branch. For example, in the case where the bypass branches include a second branch and a third branch, since the signal loss of the second branch is less than that of the third branch, it can be understood that the priority of using the second branch to replace the first branch is higher than that of using the third branch to replace the first branch. In other words, it is possible to first determine whether to enable the second branch based on the interference of the second branch. If the second branch cannot be enabled, it is possible to continue to determine whether to enable the third branch based on the interference of the third branch. Compared with the first branch, both the second branch and the third branch can reduce the system delay and power consumption through lower insertion loss.

[0012] In a possible implementation manner, the bypass branches include a second branch and a third branch, the second information includes a first resource and a second resource, the first resource is a resource for performing interference measurement on the second branch, and the second resource is a resource for performing interference measurement on the third branch.

[0013] In the above implementation manner, for the interference measurement of different bypass branches, different resources can be configured instead of configuring the same resources for multiple bypass branches, which can effectively reduce the situation where the interference measurement of the bypass branch cannot be performed in a timely manner due to resource contention and improve the rationality of resource allocation.

[0014] In a possible implementation manner, the reference signal includes a first reference signal and a second reference signal, the first reference signal is used to determine the interference of the second branch, and the second reference signal is used to determine the interference of the third branch; transmitting the reference signal on the resources includes: transmitting the first reference signal on the first resource; transmitting the second reference signal on the second resource.

[0015] In the above implementation manner, different reference signals are received on different resources, which can effectively improve the transmission reliability and reduce the bit error rate.

[0016] In a second aspect, an embodiment of the present application provides a communication method, which is applied to a second communication device. The second communication device may be a terminal, or a component in the terminal (such as a module, a communication module, a circuit or a chip responsible for communication functions (such as a modulation and demodulation chip, also known as a baseband chip, or a system-on-chip or system-in-package chip including a modem core)), and may also be a logical node, a logical module or software that can implement all or part of the communication device functions. The method includes: sending first information to a first communication device, where the first information is used to indicate that the second communication device supports bypass branch switching. The branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where the radio frequency filter is located, and the signal loss of the bypass branch is less than that of the first branch; receiving second information from the first communication device, where the second information includes resources for performing interference measurement on the bypass branch; receiving a reference signal on the resources, where the reference signal is used to determine the interference on the bypass branch.

[0017] In the above solution, the second information received by the second communication device may include resources specifically for performing interference measurement on the bypass branch. That is to say, in the embodiment of the present application, resources can be specifically configured for the interference measurement of the bypass branch. Subsequently, by receiving the reference signal on these resources, the interference on the bypass branch can be determined. The entire process does not require the introduction of a phase-locked loop, which can effectively reduce the implementation complexity. In addition, using the reference signal to determine the interference on the bypass branch can detect all possible interference frequencies, rather than only the interference within the frequency range corresponding to the phase-locked loop. This makes the interference measurement more comprehensive and improves the accuracy of the interference measurement.

[0018] In a possible implementation, the bypass branch includes a second branch and / or a third branch. The second branch does not include a filter, and the third branch is the branch where the low-pass filter is located. The signal loss of the second branch is less than that of the third branch.

[0019] In a possible implementation, the bypass branch includes a second branch and a third branch. The second information includes a first resource and a second resource. The first resource is the resource for performing interference measurement on the second branch, and the second resource is the resource for performing interference measurement on the third branch.

[0020] In a possible implementation, the reference signal includes a first reference signal and a second reference signal. The first reference signal is used to determine the interference on the second branch, and the second reference signal is used to determine the interference on the third branch. Receiving the reference signal from the second communication device on the resources includes: receiving the first reference signal on the first resource using the second branch; receiving the second reference signal on the second resource using the third branch.

[0021] In a possible implementation, according to the received power of the reference signal and the interference power level index corresponding to the bypass branch, the branch used by the second communication device for data reception is determined.

[0022] Exemplarily, the interference power level index is predefined. In this implementation, instead of taking a long time, by comparing the received power of the reference signal with the interference power level index, the branch used by the second communication device for data reception can be quickly determined.

[0023] Combined with the first aspect or the second aspect, in a possible implementation, the number of resources corresponding to the first resource and the number of resources corresponding to the second resource are both the same as the number of resources corresponding to the third resource, and the third resource is the resource used for channel measurement.

[0024] In the above implementation, the number of resources corresponding to the first resource is the same as the number of resources corresponding to the second resource, which can effectively avoid the situation of incomplete measurement caused by different numbers of resources, and thus improve the accuracy of interference measurement.

[0025] In a possible implementation, the third resource is a non-zero power channel state information reference signal resource NZP CSI-RS Resource.

[0026] In a possible implementation, the second information further includes an indication field, and the indication field is used to indicate that the resource is used for interference measurement of the first branch or the resource is used for interference measurement of the bypass branch.

[0027] In a possible implementation, the bypass branch includes a second branch and a third branch; the indication field is used to indicate that the resource is used for interference measurement of the first branch, or the resource is used for interference measurement of the second branch, or the resource is used for interference measurement of the third branch.

[0028] In a possible implementation, the reference signal is a zero power channel state information reference signal ZP CSI-RS, and the second information is channel state information-interference measurement-resource CSI-IM-Resource, or channel state information-interference measurement-resource set CSI-IM-ResourceSet.

[0029] The above implementation can use NZP CSI-RS to complete inter-frequency interference measurement. The resources used for interference measurement of the bypass branch can be configured in CSI-IM-Resource or in CSI-IM-ResourceSet, and the configuration method can be flexibly selected according to actual requirements.

[0030] In a possible implementation, if the reference signal is NZP CSI-RS, the second information is NZP CSI-RS Resource, or NZP CSI-RS ResourceSet.

[0031] The above implementation can be applied to a multi-user multiple-input multiple-output (MU-MIMO) scenario, that is, NZP CSI-RS can be used to complete inter-frequency interference measurement. The resources for interference measurement of the bypass branch can be configured in NZP CSI-RS Resource or in NZP CSI-RS ResourceSet, and the configuration method can be selected more flexibly according to actual requirements.

[0032] In a third aspect, an embodiment of the present application provides a communication device, which may be the first communication device or a chip in the first communication device. The communication device is used to implement the method of the first aspect or any implementation manner in the first aspect. The communication device includes a module for implementing the method of the first aspect or any implementation manner in the first aspect.

[0033] In a fourth aspect, an embodiment of the present application provides a communication device, which may be the second communication device or a chip in the second communication device. The communication device is used to implement the method of the second aspect or any implementation manner in the second aspect. The communication device includes a module for implementing the method of the second aspect or any implementation manner in the second aspect.

[0034] In the third aspect or the fourth aspect, the above communication device may include a transceiver module and a processing module. For the specific description of the transceiver module and the processing module, reference may also be made to the device embodiments shown below. The beneficial effects of the above third aspect and the above fourth aspect may refer to the relevant descriptions of the foregoing first aspect and second aspect, which will not be elaborated here.

[0035] In a fifth aspect, an embodiment of the present application provides a communication device, which includes a processor and a transceiver. The transceiver is used to transmit and receive information, and the processor is used to enable the communication device to implement the method of the first aspect or any implementation manner in the first aspect, or to implement the method of the second aspect or any implementation manner in the second aspect.

[0036] In a sixth aspect, the present application provides a communication device, which at least includes a processor. The processor is used to execute computer execution instructions to enable the communication device to implement the method of the first aspect or any implementation manner in the first aspect, or to implement the method of the second aspect or any implementation manner in the second aspect.

[0037] In combination with the sixth aspect, in a possible implementation, the communication device may further include an interface circuit. The interface circuit is used to receive computer execution instructions and transmit them to the processor.

[0038] In a seventh aspect, the present application provides a computer-readable storage medium storing a computer program, which when executed, causes a communication device including a processor to implement the method according to the first aspect or any implementation manner of the first aspect, or implement the method according to the second aspect or any implementation manner of the second aspect.

[0039] In an eighth aspect, an embodiment of the present application provides a computer program product including instructions, which when run on a computer, cause the computer to implement the method according to the first aspect or any implementation manner of the first aspect, or implement the method according to the second aspect or any implementation manner of the second aspect.

[0040] In a ninth aspect, an embodiment of the present application provides a communication system including at least a first communication device and a second communication device. The first communication device is used to implement the method according to the first aspect or any implementation manner of the first aspect, and the second communication device is used to implement the method according to the second aspect or any implementation manner of the second aspect.

[0041] The technical effects achieved by the above aspects can be mutually referred to or referred to the beneficial effects in the method embodiments shown below, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a simplified schematic diagram of a communication system provided by an embodiment of the present application;

[0043] Figure 2a is a structural schematic diagram of a bypass branch corresponding to a branch where a radio frequency filter is located provided by an embodiment of the present application Figure 1 ;

[0044] Figure 2b is a second structural schematic diagram of a bypass branch corresponding to a branch where a radio frequency filter is located provided by an embodiment of the present application;

[0045] Figure 2c is a structural schematic diagram of a bypass branch corresponding to a branch where a radio frequency filter is located provided by an embodiment of the present application Figure 3 ;

[0046] Figure 3 is a flowchart corresponding to a communication method provided by an embodiment of the present application;

[0047] Figure 4 is a flowchart corresponding to another communication method provided by an embodiment of the present application;

[0048] Figure 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

[0049] Figure 6 is a schematic structural diagram of another communication device provided by an embodiment of the present application. Detailed implementation manners

[0050] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application.

[0051] In the description of the present application, "first", "second", etc. are only used to distinguish different objects, rather than to describe a specific order. In addition, unless otherwise specified, " / " means "or". For example, A / B can represent A or B. The "and / or" herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, "at least one" means one or more, and "multiple" means two or more. "One (or more) of the following items" or a similar expression refers to any combination of these items, including any combination of a single item (or more) or plural items (or more). For example, at least one of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Wherein a, b, c can be single or multiple.

[0052] The terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device, etc. that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices, etc.

[0053] In the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary", "for example", or "for illustration" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example", or "for illustration" is intended to present relevant concepts in a specific manner.

[0054] It can be understood that in this application, "when", "if", and "in case" all refer to the device making corresponding processing under certain objective circumstances, rather than limiting time, and it is not required that the device must have a judgment action when implemented, nor does it mean that there are other limitations. Among them, the device making corresponding processing under certain objective circumstances includes: satisfying the objective circumstance, that is, being able to perform the corresponding processing; or satisfying the objective circumstance and other circumstances to be able to perform the corresponding processing.

[0055] "Simultaneously" in this application can be understood as "in parallel", or at the same time point, or it can also be understood as within a period of time, or within the same cycle. Specifically, it can be understood in combination with the context.

[0056] In this application, elements represented in the singular are intended to mean "one or more", rather than "one and only one", unless otherwise specified.

[0057] It can be understood that in the embodiments of this application, expressions such as "B corresponding to A", "A corresponding to B", or similar expressions mean that B is associated with A, and B can be determined according to A. This includes both determining information B only according to A and determining B according to A and other information. In addition, A being used to determine information B can also include indirect determination situations. For example, B is determined according to C, and C is determined according to A.

[0058] In this application, "send" and "receive" represent the direction of signal transmission. For example, "sending information to XX" can be understood as the destination of the information being XX, which can include directly sending through the air interface, and also include other units or modules indirectly sending through the air interface. "Receiving information from YY" can be understood as the source of the information being YY, which can include directly receiving from YY through the air interface, or can also include indirectly receiving from YY through the air interface from other units or modules. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can be carried out between devices. For example, sending or receiving between components within a device, between modules, between chips, between software modules, or between hardware modules through a bus, trace, or interface.

[0059] The technical solutions of the embodiments of this application can be applied to various wireless communication systems (for example, time-division duplex mobile communication systems), and specifically may include: global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems, general packet radio service (GPRS), wireless local area network (WLAN) systems using 802.11 series protocols, long term evolution (LTE) systems, fifth generation (5G) mobile communication systems or new radio access technology (NR), networks integrating multiple systems, Internet of Things systems, vehicle-to-everything systems, open-radio access network (O-RAN) systems, and future communication systems. Among them, the 802.11 series protocols include but are not limited to: 802.11ax protocol, 802.11be protocol, Wi-Fi 7 or next-generation protocols such as Wi-Fi 8, ultra high reliability (UHR), or 802.11bn protocol, or Wi-Fi AI, or millimeter waves, etc., which are not listed one by one here. It can be understood that the application scenarios of the embodiments of this application include stand-alone networking (for example, Standalone, SA) scenarios, carrier aggregation (Carrier Aggregation, CA) scenarios, dual connectivity (Dual Connectivity, DC) scenarios, etc.

[0060] The system architecture applied in the embodiments of this application will be introduced below. It should be noted that the system architecture and application scenarios described in the embodiments of this application are for more clearly explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art know that with the evolution of the system architecture or application scenarios, the technical solutions provided by the embodiments of this application are equally applicable to similar technical problems.

[0061] See Figure 1 , Figure 1 is a simplified schematic diagram of a communication system provided by the embodiments of this application. As Figure 1As shown, the communication system 100 includes a core network 110 and a radio access network 120. Among them, the core network 110 and the radio access network 120 can be connected through the NG interface, and the radio access networks 120 can be connected through the Xn interface, so as to implement the control plane and user plane functions.

[0062] The core network 110 is the management and control center of the wireless network, responsible for data processing and distribution. For example, the core network 110 can be a 5G core network (5G Core Network, 5GC), which can modularize network functions. The main network functions can include the Access and Mobility Management Function (AMF) and the User Plane Function (UPF). These functions can communicate through standardized interfaces to provide flexible network services.

[0063] The radio access network 120 can be a traditional (such as 5G, 4G, 3G or 2G) radio access network, or a next-generation (such as a higher version) radio access network. As Figure 1As shown, the radio access network may include multiple network devices (also referred to as access network devices or AP devices). A network device may be an entity on the network side for transmitting or receiving signals, such as a base station (BS). A BS may be a device deployed in the radio access network capable of wireless communication with terminals. The base station may have various forms, such as macro base stations, micro base stations, relay stations, and access points (APs), etc. Exemplarily, the base station involved in the embodiments of the present application may be a base station in 5G, a base station in the next-generation radio access network, an access network device or a module of an access network device in an O-RAN system, a base station in a future mobile communication system or an access node in a Wi-Fi system, or an evolved node B (eNB) in LTE, etc. Among them, the base station in 5G may also be referred to as a transmission reception point (TRP) or a 5G base station (next-generation node B, gNB). The base station may also be replaced with the following names, such as: wireless access point, node B, transmitting point (TP), master station MeNB, secondary station SeNB, multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point, transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), centralized unit (CU), distributed unit (DU), positioning node, IAB donor, etc.

[0064] The network device in the embodiments of the present application can be an integrated base station, or can be a base station including a CU and / or a DU. The base station including a CU and a DU can also be referred to as a base station with separated CU and DU, such as the base station including a gNB-CU and a gNB-DU. Among them, the CU can also be separated into a CU control plane (CU-CP) and a CU user plane (CU-UP), such as the base station including a gNB-CU-CP, a gNB-CU-UP, and a gNB-DU. Alternatively, the network device in the embodiments of the present application can also be a radio unit (RU). Or, the network device in the embodiments of the present application can also be an O-RAN architecture, etc. The embodiments of the present application do not limit the specific deployment manner of the network device. Exemplarily, when the network device is an O-RAN architecture, the network device shown in the embodiments of the present application can be an access network device in the O-RAN, such as a combination of one or more of a CU, a DU, or an RU, or a module in the access network device. In the ORAN system, the CU can also be referred to as an open (O)-CU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, the DU can also be referred to as an O-DU, and the RU can also be referred to as an O-RU.

[0065] In the embodiments of the present application, the device for implementing the functions of the network device can be the network device; it can also be a device capable of supporting the network device to implement the functions, such as a chip system, a communication module, or a modem, etc. This device can be installed in the network device. The network device can support networks with the same or different access technologies. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the network device.

[0066] It should be understood that the radio access network 120 can be responsible for connecting the terminal device to the network and processing data transmission. It can be understood that when the communication system 100 is a 5G NR system, Figure 1 the radio access network 120 therein can include two network elements: a 5G base station and a 4G base station (ng-eNB) connected to the 5GC. If the serving base station of the terminal device is a gNB, it can be responsible for providing the user plane and control plane protocol functions of 5G NR for the terminal device; if the serving base station of the terminal device is an ng-eNB, it is responsible for providing the user plane and control plane protocol functions of the Evolved Universal Terrestrial RadioAccess (E-UTRA) of 4G for the UE.

[0067] Among them, the terminal device is in Figure 1Not shown in the figure, the terminal device here can be referred to as a terminal, user equipment, mobile station (MS), mobile terminal (MT), non-access point station (non-AP STA), etc. It can be a device with wireless transceiver functions; it can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, satellites, etc.). The terminal device can be used to connect people, things, and machines. The terminal device can be widely applied to various scenarios, such as cellular communication, WLAN communication, device-to-device (D2D), vehicle-to-everything (V2X), peer to peer (P2P), machine to machine (M2M), machine type communication (MTC), Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, smart home, drones, robots, remote sensing, passive sensing, positioning, navigation and detection, autonomous delivery and mobility, etc.

[0068] In the embodiments of the present application, the device for implementing the functions of the terminal can be the terminal; it can also be a device capable of supporting the terminal to implement such functions, such as a chip system, or a communication module, or a modem, etc. This device can be installed in the terminal. In the embodiments of the present application, the chip system can be composed of chips, or can also include chips and other discrete devices. The embodiments of the present application do not limit the specific technologies and specific device forms adopted by the terminal device.

[0069] It should be understood that in the present application, the terminal device and / or the network device can execute some or all of the steps in the embodiments. These steps or operations are only examples, and the embodiments of the present application can also execute other operations or various deformations of the operations. In addition, the various steps can be executed in different orders presented in the embodiments, and it is possible not to execute all the operations in the embodiments of the present application.

[0070] To facilitate understanding of the technical solutions provided by the embodiments of the present application, first, relevant terms of the communication system involved in the embodiments of the present application are introduced:

[0071] 1. Insertion Loss (IL)

[0072] It refers to the loss of load power caused by the insertion of an element or device, which can be expressed as the ratio in decibels of the power received by the load before the insertion of the element or device to the power received by the same load after the insertion.

[0073] 2. Radio Frequency Filter

[0074] Among them, the radio frequency filter in the embodiments of the present application can be understood as a Band - pass Filter (BPF).

[0075] In the current NR receiver, the radio frequency filter is located behind the antenna. The pass - band range matches the frequency range of the receiver. The in - band insertion loss directly affects the noise figure of the receiver, and the out - of - band rejection can effectively reduce adjacent - channel interference and high - order harmonic interference of mixing frequencies, improving the sensitivity of the receiver. It is mainly divided into the following categories:

[0076] a) Suppression of the output of this duplexer to prevent the output signal from being too large and causing reception blockage;

[0077] b) Suppression of signals in the aliasing region to prevent large signals from mixing into the intermediate frequency after sampling and affecting demodulation;

[0078] c) Suppression of the combined component of m ± n to prevent the radio frequency (RF) input signal with a frequency of mf RF from mixing with the local oscillator (LO) signal and entering the intermediate frequency (IF);

[0079] d) Suppression of strong emission signals of other nearby systems that may exist to prevent reception blockage.

[0080] 3. Bypass

[0081] Bypass means providing an additional signal path in a circuit so that the signal can bypass certain components or paths to reduce signal loss or improve signal transmission characteristics, usually achieved through components such as capacitors, inductors, or transmission lines. In filter design, the Bypass channel can be used to achieve band - pass or band - stop characteristics to selectively pass or block signals in a specific frequency range.

[0082] In the embodiments of the present application, the bypass branch corresponding to the branch where the radio frequency filter is located may include at least one branch. For ease of understanding, the structure of the bypass branch corresponding to the branch where the radio frequency filter is located is introduced below:

[0083] In a possible implementation, the number of bypass branches corresponding to the branch where the RF filter is located can be one. Exemplarily, please refer to Figure 2a , Figure 2a which is a schematic diagram of the structure of a bypass branch corresponding to the branch where the RF filter is located provided by an embodiment of the present application. Figure 1 As Figure 2a shown, between the antenna and the Low Noise Amplifier (LNA), there can be two branches, namely branch R1 and branch R2. Among them, branch R1 can be used to represent the branch where the RF filter is located, which can be realized by being connected in series with the RF filter through a switch; branch R2 can be used to represent the bypass branch corresponding to the branch where the RF filter is located, which can be realized by this element of the switch. It can be understood that the signal loss of branch R2 is less than that of branch R1.

[0084] Please refer to Figure 2b , Figure 2b which is the second schematic diagram of the structure of a bypass branch corresponding to the branch where the RF filter is located provided by an embodiment of the present application. As Figure 2b shown, between the antenna and the LNA, there can be two branches, namely branch R1 and branch R3. Among them, branch R1 can be used to represent the branch where the RF filter is located, and branch R3 can be used to represent the bypass branch corresponding to the branch where the RF filter is located, which can be realized by being connected in series with a Low-pass Filter (LPF) through a switch.

[0085] It can be understood that in a downlink receiver, the m±n intermodulation interference is small, and the interference signal mainly contributing to the co-channel interference is the interference signal at the third harmonic of the LO. After mixing, it will fall into the baseband. Using a low-pass filter can effectively filter out the interference signals at high harmonic frequencies such as 3fc (cut-off frequency) and 5fc. Compared with the RF filter, the low-pass filter has lower insertion loss, improving the noise figure and power consumption. In other words, the signal loss of branch R3 is less than that of branch R1.

[0086] In another possible implementation, the number of bypass branches corresponding to the branch where the RF filter is located can also be two. Exemplarily, please refer to Figure 2c , Figure 2c which is a schematic diagram of the structure of a bypass branch corresponding to the branch where the RF filter is located provided by an embodiment of the present application. Figure 3 As Figure 2cAs shown, between the antenna and the LNA, there may be three branches including branch R1, branch R2, and branch R3. Among them, branch R1 can be used to represent the branch where the RF filter is located, and both branch R2 and branch R3 can be used to represent the bypass branches corresponding to the branch where the RF filter is located. It can be understood that the signal loss of branch R2 is less than that of branch R3, and the signal loss of branch R3 is less than that of branch R1.

[0087] For the description of branch R2 in the embodiments of the present application, reference can be made to the above Figure 2a corresponding description. For the description of branch R3, reference can be made to the above Figure 2b corresponding description, which will not be elaborated here.

[0088] To facilitate the understanding of the technical method provided by the embodiments of the present application, a brief introduction to the existing resource configuration method related to interference measurement in the embodiments of the present application is given:

[0089] In the downlink interference measurement based on the Channel State Information Reference Signal (CSI-RS), the CSI-RS in NR can be divided into Non-Zero Power (NZP) CSI-RS and Zero-Power (ZP) CSI-RS according to whether there is a pilot signal. Three types of resources can be configured in the RRC signaling (such as CSI-ResourceConfig) configured for the UE, specifically including: the first type of resource (such as CSI-SSB resource), the second type of resource (such as NZP CSI-RS resource), and the third type of resource (such as CSI-IM resource).

[0090] Among them, the CSI-SSB resource is mainly used to calculate the Physical layer Reference Signal Received Power (L1-RSRP) and report it to the base station for connected state beam and mobility management.

[0091] NZP CSI-RS resource is mainly used for measurement, which is divided into channel measurement (NZP CSI-RS resource for channel measurement) and interference measurement (NZP CSI-RS resource for interference measurement). When used for channel measurement, values such as Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), layer indication (LI), and rank indication (RI) are calculated and reported to the base station for MIMO precoding and adaptive Physical Downlink Shared Channel (PDSCH) transmission. When used for interference measurement, it is mainly used for interference measurement between MU-MIMO users within a cell. The UE assumes that each CSI-RS port corresponds to an interference transmission layer, and the UE accumulates the interference measurements of all interference layers.

[0092] CSI-IM resource is mainly used for inter-cell interference measurement. Therefore, the CSI-IM Resource of the current cell is usually configured as ZP CSI-RS, while there is normal signal transmission (such as data transmission) on the same resources in neighboring cells. The UE can estimate the interference from other cells by measuring the received power of the CSI-IM Resource. The signal measured on the CSI-IM is usually assumed to be the data transmitted by the neighboring cell on the PDSCH.

[0093] If only CSI-IM-based interference measurement is adopted, the number of resources of CSI-IM is the same as that of NZP CSI-RS resources used for channel measurement, and the CSI-IM Resource corresponds to the NZP CSI-RS Resource one by one for a specific CSI Report.

[0094] In a wireless communication system, the main function of a radio frequency filter is to suppress out-of-band interference. When there is no strong requirement for out-of-band interference suppression, the role of the radio frequency filter is not significant. To reduce system latency and power consumption, it is necessary to enable a bypass branch to bypass the radio frequency filter when there is no significant interference. In order to more comprehensively and conveniently implement the interference measurement of the bypass branch, the embodiments of the present application do not need to introduce a phase-locked loop, but can change the above resource configuration method. For example, configure a resource specifically for measuring the interference of the bypass branch. Subsequently, the scheme of enabling the bypass branch on this resource can detect all frequencies that may cause interference, which not only improves the accuracy of interference measurement but also reduces the implementation complexity.

[0095] The technical solutions provided by the present application will be described in detail below with reference to more drawings.

[0096] The technical solutions provided by the present application are described through multiple embodiments. Specifically, refer to the descriptions of the following embodiments. Among them, the same or similar parts between the various embodiments or implementation manners can be referred to each other. In the present application, in each embodiment and each implementation manner / implementation method / realization method in each embodiment, if there is no special description and logical conflict, the terms and / or descriptions between different embodiments and between each implementation manner / implementation method / realization method in each embodiment are consistent and can be mutually referred to. The technical features in different embodiments and in each implementation manner / implementation method / realization method in each embodiment can be combined to form new embodiments, implementation manners, implementation methods, or realization methods according to their internal logical relationships. The following implementation manners of the present application do not constitute a limitation on the protection scope of the present application.

[0097] Embodiment 1:

[0098] Embodiment 1 of the present application mainly introduces that when the second communication device supports bypass branch switching and the number of bypass branches is one, the interference measurement of the bypass branch is realized through the dedicated resources sent by the first communication device.

[0099] Among them, the first communication device here refers to the above Figure 1 shown network device (for example, a base station), and the second communication device can be the terminal device (for example, a UE) in the above Figure 1 shown communication system. Among them, the branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where the radio frequency filter is located. Specifically, refer to the above Figure 2a or Figure 2b shown branch R1; the bypass branch can include a second branch or a third branch. The second branch does not include a filter. Specifically, refer to the above Figure 2athe branch R2 shown; the third branch is the branch where the low-pass filter is located, and specifically, reference may be made to the above Figure 2b the branch R3 shown; it can be understood that the signal loss of the bypass branch is less than the signal loss of the first branch, that is, the signal losses of the second branch and the third branch are both less than the signal loss of the first branch.

[0100] For the convenience of understanding, further, please refer to Figure 3 , Figure 3 is a schematic flowchart corresponding to a communication method provided by an embodiment of the present application. As Figure 3 shown, this method can be jointly executed by the first communication device and the second communication device. This method can at least include steps S301 - step S304:

[0101] Step S301, the second communication device sends first information to the first communication device, and the first information is used to indicate that the second communication device supports bypass branch switching.

[0102] Correspondingly, the first communication device can receive the above first information. It can be understood that the first information here can be understood as the capability information reported by the second communication device, which can be actively reported by the second communication device during initial access, or can be returned by the second communication device to the first communication device after receiving the query information sent by the first communication device, and this will not be limited here.

[0103] In a possible implementation manner, a capability identifier for indicating whether to support bypass branch switching can be predefined in the communication protocol involved in the embodiment of the present application. Exemplarily, if the capability identifier is "true", it can indicate that the second communication device supports bypass branch switching, and if the capability identifier is "false", it can indicate that the second communication device does not support bypass branch switching. In other words, the above first information can include a capability identifier (for example, "true").

[0104] Step S302, the first communication device sends second information to the second communication device, and the second information includes resources for interference measurement of the bypass branch.

[0105] Correspondingly, the second communication device can receive the above second information.

[0106] Among them, the number of resources corresponding to the resources for interference measurement of the bypass branch can be the same as the number of resources corresponding to the resources for channel measurement (for example, NZP CSI-RS Resource), and the resources for interference measurement of the bypass branch and the resources for channel measurement (for example, NZP CSI-RS Resource) are in one-to-one correspondence. This can be used for specific CSI reports to avoid the situation of incomplete measurement caused by different numbers of resources, thereby improving the accuracy of interference measurement.

[0107] It can be understood that after receiving the first information, the first communication device needs to configure the interference measurement for the bypass branch and generate the second information.

[0108] Exemplarily, in the embodiments of the present application, the RRC signaling (for example, CSI-ResourceConfig) may not introduce a new CSI resource type, but change a certain resource type in the existing resource configuration to obtain the second information.

[0109] It can be understood that in the embodiments of the present application, a 1-bit indication field may be added to the second information, and this indication field can be used to indicate that the resource is used for interference measurement of the first branch or the resource is used for interference measurement of the bypass branch. In other words, the second information may include the resources for interference measurement of the bypass branch and may also include the resources for interference measurement of the first branch.

[0110] Among them, the change of the resource type in the existing resource configuration is related to the reference signal used for subsequent interference measurement. If the reference signal used for subsequent interference measurement is ZP CSI-RS, then the second information here can be CSI-IM-Resource or CSI-IM-ResourceSet. For specific details, please refer to Implementation Manner 1 and Implementation Manner 2 below; if the reference signal used for subsequent interference measurement is NZP CSI-RS, then the second information can be NZP CSI-RS Resource, or NZP CSI-RS ResourceSet. For specific details, please refer to Implementation Manner 3 and Implementation Manner 4 below.

[0111] The following will be elaborated in different cases:

[0112] Implementation Manner 1

[0113] If the reference signal used for subsequent interference measurement is ZP CSI-RS, then the present application can change the CSI-IMresource in the existing resource configuration to obtain the second information. For specific details, please refer to Table 1 below. Table 1 is a schematic table of a possible message format provided by the embodiments of the present application. As shown in Table 1:

[0114] Table 1

[0115]

[0116]

[0117] As shown in Table 1 above, in the embodiments of the present application, a field csi-IM-ResourceType can be added to CSI-IM-Resource in the radio resource management protocol (for example, TS38.331), and the value is ENUMERATED{0, 1}. Among them, 0 can be used to indicate that the resource is used for interference measurement on the first branch, and 1 can be used to indicate that the resource is used for interference measurement on the bypass branch.

[0118] Implementation method 2:

[0119] If the reference signal for subsequent interference measurement is ZP CSI-RS, the second communication device supporting bypass branch switching can be configured with at least two CSI-IM-ResourceSets, and each set can contain one or more resources. In this case, in the embodiments of the present application, the CSI-IM-ResourceSet can also be changed to obtain the second information. Specifically, refer to Table 2 below. Table 2 is a schematic table of another possible message format provided by the embodiments of the present application. As shown in Table 2:

[0120] Table 2

[0121]

[0122] As shown in Table 2 above, in the embodiments of the present application, a field CSI-IM-ResourceSetType can be added to CSI-IM-ResourceSet, and the value is ENUMERATED{type1, type2}. Among them, type1 can be used to indicate that the resource is used for interference measurement on the first branch, and type2 can be used to indicate that the resource is used for interference measurement on the bypass branch.

[0123] Implementation method 3:

[0124] If the reference signal for interference measurement to be used subsequently is ZP CSI-RS, this application can modify the NZP CSI-RS Resource in the existing resource configuration to obtain the second information. Exemplarily, an embodiment of this application can add a field nzp-CSI-ResourceType to the NZP CSI-RS Resource, with the value being ENUMERATED{type1, type2}. Among them, type1 can be used to indicate that the resource is for interference measurement of the first branch, and type2 can be used to indicate that the resource is for interference measurement of the bypass branch.

[0125] Implementation method four:

[0126] If the reference signal for interference measurement to be used subsequently is ZP CSI-RS, this application can modify the NZP CSI-RS ResourceSet in the existing resource configuration to obtain the second information. Specifically, refer to Table 3 below. Table 3 is another possible message format schematic table provided by an embodiment of this application. As shown in Table 3:

[0127] Table 3

[0128]

[0129]

[0130] As shown in Table 3 above, an embodiment of this application can add a field nzp-CSI-ResourceSetType to the NZP-CSI-RS-ResourceSet, with the value being ENUMERATED{type1, type2}. Among them, type1 can be used to indicate that the resource is for interference measurement of the first branch, and type2 can be used to indicate that the resource is for interference measurement of the bypass branch.

[0131] Based on the above four implementation methods, it can be understood that when the first communication device sends the second information to the second communication device, it means that the first communication device sends an RRC signaling (i.e., CSI-ResourceConfig) to the second communication device, and this RRC signaling may include the second information.

[0132] Optionally, embodiments of the present application may also introduce a new CSI resource type, i.e., the fourth type of resource, in the existing CSI-ResourceConfig for resource allocation, which is specifically used for interference measurement of the bypass branch. In other words, the second information here refers to the CSI-ResourceConfig that introduces the fourth type of resource. The first communication device sending the second information to the second communication device can be understood as: the first communication device can send the CSI-ResourceConfig that introduces the fourth type of resource to the second communication device through RRC signaling.

[0133] Step S303, the first communication device transmits a reference signal on the resource.

[0134] Correspondingly, the second communication device can receive the reference signal on the resource. Exemplarily, the second communication device can receive the reference signal on the resource (such as a symbol or a time slot) using the bypass branch.

[0135] Step S304, the second communication device determines the interference on the bypass branch based on the reference signal.

[0136] Among them, the interference on the bypass branch is essentially the interference received on the bypass branch, which can be represented by the received power of the reference signal.

[0137] In a possible implementation, a corresponding interference power level index for the bypass branch can be predefined in the communication protocol involved in the embodiments of the present application. Subsequently, the second communication device can determine the branch used by the second communication device for data reception according to the received power of the reference signal and the interference power level index.

[0138] Exemplarily, the second communication device can obtain an interference measurement result according to the comparison between the received power of the reference signal and the interference power level index, and then can decide whether to activate the bypass branch scheme based on the interference measurement result.

[0139] If the received power of the reference signal is less than or equal to the interference power level index, it means that the obtained interference measurement result indicates that the interference on the bypass branch is small. At this time, the bypass branch can be determined as the branch used by the second communication device for data reception, that is, subsequently, the data transmitted by the first communication device can be received by bypassing the RF filter, reducing the high loss brought by the RF filter and improving the delay, noise figure, and power loss.

[0140] If the received power of the reference signal is greater than the interference power level index, it means that the obtained interference measurement result indicates that the interference on the bypass branch is large. At this time, the first branch can be determined as the branch used by the second communication device for data reception, that is, in the case of high interference, it can fallback to the branch where the RF filter is located without affecting data reception.

[0141] Embodiment 2:

[0142] In Embodiment 2 of this application, it is mainly introduced that when the second communication device supports bypass branch switching and the number of bypass branches is two, dedicated resources are separately sent by the first communication device for these two bypass branches to implement interference measurement for the two bypass branches, and then the branch finally used for data reception is determined.

[0143] Among them, the first communication device here refers to the above-mentioned Figure 1 network device (for example, a base station) shown, and the second communication device can be the terminal device (for example, a UE) in the above-mentioned Figure 1 shown communication system. Among them, the branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where the radio frequency filter is located, and specifically, reference can be made to the branch R1 shown in the above-mentioned Figure 2c The bypass branch can include a second branch and a third branch. The second branch does not include a filter, and specifically, reference can be made to the branch R2 shown in the above-mentioned Figure 2c The third branch is the branch where the low-pass filter is located, and specifically, reference can be made to the branch R3 shown in the above-mentioned Figure 2c It can be understood that the signal loss of the second branch is less than that of the third branch, and the signal loss of the third branch is less than that of the first branch.

[0144] For easy understanding, further, please refer to Figure 4 , Figure 4 which is a schematic flow chart corresponding to another communication method provided in the embodiment of this application. As Figure 4 shown, this method can be jointly executed by the first communication device and the second communication device. This method can at least include steps S401 - step S407:

[0145] Step S401, the second communication device sends first information to the first communication device, and the first information is used to indicate that the second communication device supports bypass branch switching.

[0146] Correspondingly, the first communication device can receive the above first information. It can be understood that the first information here can be understood as the capability information reported by the second communication device, which can be actively reported by the second communication device during initial access, or can be returned by the second communication device to the first communication device after receiving the query information sent by the first communication device. Here, it will not be limited.

[0147] Step S402, the first communication device sends second information to the second communication device, and the second information includes a first resource and a second resource. The first resource is the resource for interference measurement of the second branch, and the second resource is the resource for interference measurement of the third branch.

[0148] Correspondingly, the second communication device may receive the above second information.

[0149] Among them, the number of resources corresponding to the first resource and the number of resources corresponding to the second resource may both be the same as the number of resources corresponding to the third resource. Here, the third resource may be a resource for performing channel measurement. For example, the third resource may be an NZP CSI-RS Resource. It can be understood that the first resource and the third resource may be in one-to-one correspondence, and the second resource and the third resource may also be in one-to-one correspondence. This can be used for specific CSI reporting and avoid the situation of incomplete measurement due to different numbers of resources, thereby improving the accuracy of interference measurement.

[0150] The above second information is obtained after the first communication device configures the interference measurement for the bypass branch after receiving the first information. If the reference signal for subsequent interference measurement is ZP CSI-RS, the second information here may be CSI-IM-Resource or CSI-IM-ResourceSet; if the reference signal for subsequent interference measurement is NZP CSI-RS, the second information may be NZP CSI-RS Resource, or NZP CSI-RSResourceSet.

[0151] It can be understood that an embodiment of the present application may add a 2-bit indication field to the second information. The indication field may be used to indicate that the resource is used for interference measurement of the first branch, or the resource is used for interference measurement of the second branch, or the resource is used for interference measurement of the third branch. In other words, the second information may include resources for interference measurement of the first branch, resources for interference measurement of the second branch, and resources for interference measurement of the third branch.

[0152] Exemplarily, an embodiment of the present application may add a 2-bit indication field to the CSI-IMresource. For example, an embodiment of the present application may add a field csi-IM-ResourceType with a value of ENUMERATED{00, 01, 10} to the CSI-IM-Resource in the radio resource management protocol (for example, TS38.331). Among them, 00 may be used to indicate that the resource is used for interference measurement of the first branch, 01 may be used to indicate that the resource is used for interference measurement of the second branch, and 10 may be used to indicate that the resource is used for interference measurement of the third branch.

[0153] Exemplarily, in an embodiment of the present application, a field CSI-IM-ResourceSetType may be added to CSI-IM-ResourceSet, and the value is ENUMERATED{type1, type2, type3}. Among them, type1 may be used to indicate that the resource is used for interference measurement on the first branch, type2 may be used to indicate that the resource is used for interference measurement on the second branch, and type3 may be used to indicate that the resource is used for interference measurement on the third branch.

[0154] Exemplarily, in an embodiment of the present application, a field nzp-CSI-ResourceType may also be added to NZP CSI-RS Resource, and the value is ENUMERATED{type1, type2, type3}. Among them, type1 may be used to indicate that the resource is used for interference measurement on the first branch, type2 may be used to indicate that the resource is used for interference measurement on the second branch, and type3 may be used to indicate that the resource is used for interference measurement on the third branch.

[0155] Exemplarily, in an embodiment of the present application, a field nzp-CSI-ResourceSetType may also be added to NZP-CSI-RS-ResourceSet, and the value is ENUMERATED{type1, type2, type3}. Among them, type1 may be used to indicate that the resource is used for interference measurement on the first branch, type2 may be used to indicate that the resource is used for interference measurement on the second branch, and type3 may be used to indicate that the resource is used for interference measurement on the third branch.

[0156] Among them, for the message format of the second information, reference may be made to the descriptions of implementation manner one, implementation manner two, implementation manner three, and implementation manner four in the corresponding embodiments above. Figure 3 Details will not be described herein again.

[0157] The first communication device sending the second information to the second communication device may be understood as: the first communication device sending an RRC signaling (i.e., CSI-ResourceConfig) to the second communication device, and the second information may be included in the RRC signaling.

[0158] Step S403, the first communication device sends a first reference signal on a first resource.

[0159] Correspondingly, the second communication device may receive the first reference signal on the first resource. Exemplarily, the second communication device may receive the first reference signal on the first resource (e.g., symbol or time slot) using the second branch.

[0160] Step S404, the first communication device transmits a second reference signal on a second resource.

[0161] Correspondingly, the second communication device can receive the second reference signal on the second resource. Exemplarily, the second communication device can receive the second reference signal on the second resource (e.g., symbol or time slot) using a third branch.

[0162] It can be understood that the order of step S403 and step S404 is not limited and can be executed synchronously; step S403 can also be executed first and then step S404; or step S404 can be executed first and then step S403.

[0163] Step S405, the second communication device determines the interference on the second branch based on the first reference signal.

[0164] Among them, the interference on the second branch can be represented by the received power of the first reference signal.

[0165] Step S406, the second communication device determines whether the received power of the first reference signal is greater than the interference power level index corresponding to the bypass branch.

[0166] It can be understood that if the received power of the first reference signal is less than or equal to the interference power level index, it means that the obtained interference measurement result indicates that the interference on the second branch is small. At this time, the second branch can be determined as the branch for the second communication device to receive data, that is, the data transmitted by the first communication device can be received bypassing the RF filter subsequently, reducing the high loss brought by the RF filter and improving the delay, noise figure, and power loss.

[0167] If the received power of the first reference signal is greater than the interference power level index, it means that the obtained interference measurement result indicates that the interference on the second branch is large. At this time, step S407 can be executed:

[0168] Step S407, the second communication device determines the interference on the third branch based on the second reference signal.

[0169] Among them, the interference on the third branch can be represented by the received power of the second reference signal.

[0170] It can be understood that the second communication device can compare the received power of the second reference signal with the interference power level index and further decide whether to activate the third branch solution.

[0171] If the received power of the second reference signal is less than or equal to the interference power level index, it means that the interference on the third branch is small. At this time, the third branch can be determined as the branch for the second communication device to receive data, that is, subsequently, the data transmitted by the first communication device can be received bypassing the RF filter. The branch where the low-pass filter is located can effectively filter out the interference signals at high harmonic frequencies. Compared with the RF filter, it has lower insertion loss and can improve the noise figure and power consumption.

[0172] If the received power of the second reference signal is greater than the interference power level index, it means that the interference on the third branch is large. At this time, the first branch can be determined as the branch for the second communication device to receive data, that is, in the case of high interference, it can fallback to the branch where the RF filter is located without affecting data reception.

[0173] In a possible implementation, the first communication device can first execute step S403 and wait to receive the feedback information of the second communication device for the first reference signal. For example, if the feedback information indicates that the interference on the second branch is large, then step S404 is executed to facilitate the second communication device to determine the interference on the third branch; if the feedback information indicates that the interference on the second branch is small, it means that the second communication device has determined the second branch as the branch for data reception, that is, the second communication device does not need to detect the interference on the third branch anymore. In other words, the first communication device does not need to execute step S404 either.

[0174] In another possible implementation, after receiving the first information, the first communication device can send the second information to the second communication device. The second information here can include the first resource, that is, the resource for measuring the interference on the second branch. Then, the first communication device can send the first reference signal on the first resource so that the second communication device can determine the interference on the second branch based on the first reference signal. If the received power of the first reference signal is greater than the interference power level index, it means that the interference on the second branch is large. At this time, the second communication device can return a feedback information to the first communication device, and the feedback information is used to indicate that the interference on the second branch is large.

[0175] After receiving the feedback information, the first communication device may further send third information to the second communication device. Here, the third information may include a second resource, that is, a resource used for interference measurement of the third branch. Then, the first communication device sends a second reference signal on the second resource, so that the second communication device determines the interference on the second branch based on the first reference signal. In other words, this communication method does not send the configurations of two bypass branches to the second communication device at one time. Instead, it first sends the configuration of the bypass branch with the minimum signal loss (i.e., the second branch). When the second branch cannot be enabled, it then sends the configuration of the third branch, thereby effectively avoiding the transmission of unnecessary information, reducing resource waste, and improving resource utilization.

[0176] Combining the above-mentioned Embodiment 1 and Embodiment 2, it can be seen that the second information sent by the first communication device to the second communication device may include resources specifically used for interference measurement of the bypass branch. That is to say, the embodiments of the present application can specifically configure resources for the interference measurement of the bypass branch. Subsequently, by sending a reference signal on this resource, the interference on the bypass branch can be determined. This method can more comprehensively and conveniently implement the interference measurement of the bypass branch. In addition, compared with enabling the first branch, both Embodiment 1 and Embodiment 2 above can switch to the bypass branch through interference measurement in a scenario with a relatively small out-of-band interference suppression requirement, effectively reducing the power loss of the receiver (for example, a receiver in a time-division duplex system) and the impact on the noise figure.

[0177] The above content elaborates in detail the method provided by the present application. To facilitate the implementation of the above solutions of the embodiments of the present application, the embodiments of the present application also provide corresponding devices or equipment.

[0178] The present application divides the communication device into functional modules according to the above method embodiments. For example, each functional module can be corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation. The following will be combined with Figures 5 to 6 Describe the communication device of the embodiments of the present application in detail.

[0179] See Figure 5 , Figure 5 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As Figure 5 shown, the communication device 1 includes at least one of a transceiver module 51 and a processing module 52, and these modules can execute the corresponding functions of the communication device in the above method embodiments.

[0180] Among them, the transceiver module 51 is used to implement corresponding communication functions, and the processing module 52 is used to perform data processing. The transceiver module 51 can also be referred to as a communication interface or a communication unit, and includes a sending unit and / or a receiving unit. The transceiver module 51 can be a transceiver (including a transmitter and / or a receiver), an input / output interface (including an input and / or an output interface), a pin, a circuit, etc. The transceiver module 51 can be used to execute the sending and / or receiving steps in the above method embodiments. The processing module 52 can be a processor (which can include one or more), a processing circuit with processor functions, etc., and can be used to execute other steps in the above method embodiments except for sending and receiving. Optionally, the device further includes a storage unit, and the storage unit can be a memory, an internal storage unit (such as a register, a cache, etc.), an external storage unit (such as a read-only memory, a random access memory, etc.), etc. The storage unit is used to store instructions, and the above processing module 52 executes the instructions stored in the storage unit so that the communication device executes the above method.

[0181] In the solution of the present invention, the device can be used to execute the actions performed by the first communication device in each method embodiment; it can also be used to execute the actions performed by the second communication device in each method embodiment. It should be noted that the device can be a network element or a device, or a chip or a chip system, for example: a system on chip (SoC). Among them, the transceiver module 51 can be an input / output circuit, a communication interface; the processing module 52 is a processor, a microprocessor or an integrated circuit integrated on the chip.

[0182] In some feasible implementation manners, the communication device 1 can correspond to the first communication device described above, or be a component (such as a circuit, a chip or a chip system) configured in the first communication device.

[0183] In a specific implementation, the transceiver module 51 is used to receive a first piece of information, where the first piece of information is used to indicate that the second communication device supports bypass branch switching. The branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where the radio frequency filter is located, and the signal loss of the bypass branch is less than the signal loss of the first branch; the transceiver module 51 is further used to send a second piece of information to the second communication device, where the second piece of information includes resources for interference measurement of the bypass branch; the transceiver module 51 is further used to send a reference signal on the resources, and the reference signal is used to determine the interference on the bypass branch.

[0184] In a possible implementation manner, the processing module 52 is used to generate the second piece of information.

[0185] In a possible implementation, the bypass branch includes a second branch and / or a third branch. The second branch does not include a filter. The third branch is the branch where the low-pass filter is located. The signal loss of the second branch is less than that of the third branch.

[0186] In a possible implementation, the bypass branch includes a second branch and a third branch. The second information includes a first resource and a second resource. The first resource is a resource for interference measurement of the second branch, and the second resource is a resource for interference measurement of the third branch.

[0187] In a possible implementation, the reference signal includes a first reference signal and a second reference signal. The first reference signal is used to determine the interference of the second branch, and the second reference signal is used to determine the interference of the third branch. The transceiver module 51 is further configured to send the first reference signal on the first resource. The transceiver module 51 is further configured to send the second reference signal on the second resource.

[0188] In some feasible implementations, the communication device 1 may correspond to the second communication device described above, or be a component (such as a circuit, a chip, or a chip system) configured in the first communication device.

[0189] In a specific implementation, the transceiver module 51 is configured to send first information to the first communication device. The first information is used to indicate that the second communication device supports bypass branch switching. The branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where the radio frequency filter is located. The signal loss of the bypass branch is less than that of the first branch. The transceiver module 51 is further configured to receive second information from the first communication device. The second information includes a resource for interference measurement of the bypass branch. The transceiver module 51 is further configured to receive a reference signal on the resource. The reference signal is used to determine the interference on the bypass branch.

[0190] In a possible implementation, the bypass branch includes a second branch and / or a third branch. The second branch does not include a filter. The third branch is the branch where the low-pass filter is located. The signal loss of the second branch is less than that of the third branch.

[0191] In a possible implementation, the bypass branch includes a second branch and a third branch. The second information includes a first resource and a second resource. The first resource is a resource for interference measurement of the second branch, and the second resource is a resource for interference measurement of the third branch.

[0192] In a possible implementation, the reference signal includes a first reference signal and a second reference signal. The first reference signal is used to determine the interference of the second branch, and the second reference signal is used to determine the interference of the third branch. The transceiver module 51 is further configured to receive the first reference signal on the first resource using the second branch; the transceiver module 51 is further configured to receive the second reference signal on the second resource using the third branch.

[0193] In a possible implementation, the processing module 52 is configured to determine the branch used by the second communication device for data reception according to the received power of the reference signal and the interference power level index corresponding to the bypass branch.

[0194] Combined with any of the above implementations, in a possible implementation, the number of resources corresponding to the first resource and the number of resources corresponding to the second resource are both the same as the number of resources corresponding to the third resource, and the third resource is a resource for channel measurement.

[0195] In a possible implementation, the third resource is a NZP CSI-RS Resource.

[0196] In a possible implementation, the second information further includes an indication field, and the indication field is used to indicate that the resource is used for interference measurement on the first branch or the resource is used for interference measurement on the bypass branch.

[0197] In a possible implementation, the bypass branch includes a second branch and a third branch; the indication field is used to indicate that the resource is used for interference measurement on the first branch, or the resource is used for interference measurement on the second branch, or the resource is used for interference measurement on the third branch.

[0198] In a possible implementation, the reference signal is a ZP CSI-RS, and the second information is a CSI-IM-Resource or a CSI-IM-ResourceSet.

[0199] In a possible implementation, if the reference signal is a NZP CSI-RS, then the second information is a NZP CSI-RSResource or a NZP CSI-RS ResourceSet.

[0200] Wherein, the specific implementation manners of the transceiver module 51 and the processing module 52 can refer to the descriptions of steps S301 to S304 in the corresponding embodiments above, or Figure 3 the descriptions of steps S401 to S407 in the corresponding embodiments above, and will not be elaborated here. In addition, the description of the beneficial effects of adopting the same method will not be elaborated either. Figure 4

[0201] ​Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of another communication device provided by an embodiment of the present application. The communication device 2 can be used to implement the operations performed by the first communication device or the second communication device in the above embodiments, or the communication device 2 can be the first communication device or the second communication device mentioned above. The communication device 2 includes: a processor 61, a memory 62, and a bus system 63.

[0202] The memory 62 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory 62 is used to store relevant instructions and data. The memory 62 stores the following elements, executable modules, or data structures, or subsets thereof, or extended sets thereof:

[0203] Operation instructions: including various operation instructions for implementing various operations.

[0204] Operating system: including various system programs for implementing various basic services and processing hardware-based tasks.

[0205] Figure 6 Only one memory is shown here. Of course, the memory can also be set to multiple according to needs.

[0206] The communication device 2 may further include a transceiver 64. The transceiver 64 can be a communication module or a transceiver circuit. In the embodiments of the present application, the transceiver 64 is used to perform the transceiver operations involved in the above embodiments.

[0207] The processor 61 can be a controller, a central processor unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The processor 61 can also be a combination for implementing computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, and so on.

[0208] In a specific application, each component of the communication device 2 is coupled together through a bus system 63. In addition to a data bus, the bus system 63 may further include a power bus, a control bus, a status signal bus, etc. However, for the sake of clear illustration, in Figure 6 all kinds of buses are labeled as the bus system 63. For the sake of easy representation, Figure 6 it is only schematically shown in

[0209] In a specific implementation, the communication device 2 can execute the steps of the method performed by the first communication device or the second communication device in the foregoing embodiments. Specifically, when the communication device 2 is used to implement each step of the communication method provided in the embodiments performed by the first communication device or the second communication device, the processor 61 can implement the functions of the foregoing processing module 52, and the transceiver 64 is used to implement the functions of the foregoing transceiver module 51.

[0210] It should be noted that in practical applications, the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method embodiments can be completed by the integrated logic circuit in the hardware of the processor or the instructions in the form of software. The foregoing processor may be a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of the hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and combines its hardware to complete the steps of the foregoing method.

[0211] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be ROM, programmable read-only memory (PROM), EPROM, electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be RAM, which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM). It should be noted that the memory described in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0212] The present application also provides a chip, which at least includes a processor. The processor is used to execute computer execution instructions to enable a device installed with the chip to implement the method steps performed by the first communication device or the second communication device in the above embodiments.

[0213] Optionally, the chip may further include an interface circuit. The interface circuit is used to receive computer execution instructions and transmit them to the processor.

[0214] The present application also provides a chip system, which includes a processor for supporting a device installed with the chip system to implement the method steps performed by the first communication device or the second communication device in the above embodiments, such as generating or processing the data and / or information involved in the above method. In a possible design, the chip system further includes a memory for storing the necessary program instructions and data of the data sending device. The chip system can be composed of chips or can include chips and other discrete devices.

[0215] The embodiments of the present application provide a communication system, which at least includes a first communication device and a second communication device. The first communication device and the second communication device cooperate to implement the communication method described in the previous embodiments.

[0216] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a computer, the method steps performed by the first communication device or the second communication device in the above embodiments are implemented.

[0217] The present application also provides a computer program product. When the computer program product is executed by a computer, the method steps performed by the first communication device or the second communication device in the above embodiments are implemented.

[0218] In the above method embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can 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. When the computer instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, a computer, a server, or a data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center that includes one or more integrated available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a high-definition digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD), etc.).

[0219] It can be understood that the various numerical numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The magnitude of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic.

[0220] The above are only the preferred embodiments of the technical solution of the present application, and are not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A communication method, characterized in that, Applied to a first communication device, the method includes: Receiving first information, where the first information is used to indicate that a second communication device supports bypass branch switching. The branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where a radio frequency filter is located, and the signal loss of the bypass branch is less than that of the first branch; Sending second information to the second communication device, where the second information includes resources for interference measurement on the bypass branch; Sending a reference signal on the resources, where the reference signal is used to determine the interference on the bypass branch.

2. The method according to claim 1, wherein The bypass branch includes a second branch and / or a third branch. The second branch does not include a filter, and the third branch is the branch where a low-pass filter is located. The signal loss of the second branch is less than that of the third branch.

3. The method according to claim 2, wherein The bypass branch includes the second branch and the third branch. The second information includes a first resource and a second resource. The first resource is the resource for interference measurement on the second branch, and the second resource is the resource for interference measurement on the third branch.

4. The method according to claim 3, wherein The reference signal includes a first reference signal and a second reference signal. The first reference signal is used to determine the interference on the second branch, and the second reference signal is used to determine the interference on the third branch; The sending the reference signal on the resources includes: Sending the first reference signal on the first resource; Sending the second reference signal on the second resource.

5. A communication method, characterized in that, Applied to a second communication device, the method includes: Sending first information to the first communication device, where the first information is used to indicate that the second communication device supports bypass branch switching. The branches of the second communication device include a first branch and a bypass branch corresponding to the first branch. The first branch is the branch where a radio frequency filter is located, and the signal loss of the bypass branch is less than that of the first branch; Receiving second information from the first communication device, where the second information includes resources for interference measurement on the bypass branch; Receiving a reference signal on the resources, where the reference signal is used to determine the interference on the bypass branch.

6. The method according to claim 5, characterized in that The bypass branch includes a second branch and / or a third branch. The second branch does not include a filter, and the third branch is the branch where a low-pass filter is located. The signal loss of the second branch is less than that of the third branch.

7. The method according to claim 6, wherein The bypass branch includes the second branch and the third branch. The second information includes a first resource and a second resource. The first resource is the resource for interference measurement on the second branch, and the second resource is the resource for interference measurement on the third branch.

8. The method according to claim 7, wherein The reference signal includes a first reference signal and a second reference signal. The first reference signal is used to determine the interference on the second branch, and the second reference signal is used to determine the interference on the third branch; The receiving the reference signal from the second communication device on the resources includes: Receiving the first reference signal using the second branch on the first resource; On the second resource, the second reference signal is received using the third branch.

9. The method according to any one of claims 5-8, characterized in that, The method further includes: Determining a branch for the second communication device to receive data according to the received power of the reference signal and the interference power level index corresponding to the bypass branch.

10. The method according to any one of claims 3, 4, 7, and 8, characterized in that, The number of resources corresponding to the first resource and the number of resources corresponding to the second resource are both the same as the number of resources corresponding to a third resource, where the third resource is a resource for performing channel measurement.

11. The method according to claim 10, wherein The third resource is a non-zero power channel state information reference signal resource (NZP CSI-RS Resource).

12. The method according to any one of claims 1-11, characterized in that, The second information further includes an indication field for indicating that the resource is for interference measurement on the first branch or for interference measurement on the bypass branch.

13. The method according to claim 12, wherein The bypass branch includes a second branch and a third branch; The indication field is for indicating that the resource is for interference measurement on the first branch, or for interference measurement on the second branch, or for interference measurement on the third branch.

14. The method according to any one of claims 1-13, characterized in that, The reference signal is a zero power channel state information reference signal (ZP CSI-RS), and the second information is channel state information-interference measurement-resource (CSI-IM-Resource) or channel state information-interference measurement-resource set (CSI-IM-ResourceSet).

15. The method according to any one of claims 1-14, characterized in that, If the reference signal is NZP CSI-RS, the second information is NZP CSI-RS Resource or NZP CSI-RS ResourceSet.

16. A communication device, characterized in that, Including a module for implementing the method according to any one of claims 1 to 4 and claims 10 to 15.

17. A communication device, characterized in that, Including a module for implementing the method according to any one of claims 5 to 15.

18. A communication device, characterized in that, Including a processor and an interface circuit, where the interface circuit is for receiving signals from other communication devices and transmitting them to the processor or sending signals from the processor to other communication devices, and the processor is for enabling the communication device to implement the method according to any one of claims 1 to 15.

19. A computer-readable storage medium, characterized in that, The computer-readable storage medium is for storing a computer program, and when the computer program is executed by a processor, it enables a communication device including the processor to implement the method according to any one of claims 1 to 15.

20. A computer program product, characterized in that, The computer program product includes instructions, and when the instructions run on a computer, it enables the computer to implement the method according to any one of claims 1 to 15.

21. A communication system, characterized in that, The communication system includes a device for executing the method according to any one of claims 1 to 4 and claims 10 to 15 and a device for executing the method according to any one of claims 5 to 15.

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