Interference control method and apparatus, and communication system

Abstract

Provided are an interference control method and apparatus, and a communication system. The method is applied to a first communication device. The method comprises: acquiring a first signal, wherein the first signal is a signal of a transmission frequency band of a second communication device, and a transmission frequency band of the first communication device is adjacent to a receiving frequency band of the second communication device; according to the first signal, determining to adjust a spread-spectrum resource, wherein the spread-spectrum resource is a spectrum resource spread for the transmission frequency band of the first communication device; and outputting a second signal by means of the adjusted spectrum resource, wherein the adjusted spectrum resource comprises a spectrum resource before spectrum spreading and an adjusted spread-spectrum resource obtained on the basis of the adjustment of the spread-spectrum resource, and the second signal is a signal of the transmission frequency band of the first communication device. According to a first signal, a spread-spectrum resource is determined to adjust, such that the interference of a first communication device on a second communication device is reduced, and it is not necessary to increase the distance between deployed devices, which is conducive to reducing deployment difficulty and improving universal applicability.

Description

Interference control method, device and communication system

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on June 13, 2023, with application number 202310698561.2 and application name “Interference Control Method, Device and Communication System”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communications, and in particular to an interference control method, device, and communication system. Background Art

[0003] With the popularization of fifth-generation mobile communication technology (5G), the demand for bandwidth is increasing. However, the spectrum resources occupied by different operators can no longer meet current needs, and spread spectrum has become a trend. However, after spread spectrum, it may cause interference to signals in adjacent frequency bands. For example, the bandwidth of the 850 megahertz (MHz) spectrum (owned by telecom operators) is 11MHz. After upward spread spectrum (for example, upward spread spectrum of 4MHz), the transmission frequency range becomes 869MHz to 884MHz. Its transmission may interfere with the reception of adjacent frequency bands (such as 885MHz to 889MHz for railways or 889MHz to 904MHz for mobile), affecting the receiver's reception performance.

[0004] Currently, interference can be reduced by increasing the distance between adjacent devices when deploying wireless access network equipment, but this deployment is difficult.

[0005] Summary of the Invention

[0006] The present application provides an interference control method, apparatus, and communication system, in order to reduce the difficulty of deploying wireless access network equipment while reducing interference to communication equipment in adjacent frequency bands.

[0007] In the first aspect, the present application provides an interference control method, which can be executed by a first communication device, or by a component configured in the first communication device (such as a chip, a chip system, etc.), or by a logic module or software that can realize all or part of the functions of the first communication device. The present application does not limit this.

[0008] The first communication device may be the source of the interference signal. In other words, the signal output by the first communication device causes interference to another communication device. The first communication device may be, for example, a remote radio unit (RRU) or an active antenna unit (AAU). This application does not limit the type of the first communication device.

[0009] Exemplarily, the method includes: obtaining a first signal, which is a signal of a transmission frequency band of a second communication device, and the transmission frequency band of the first communication device is adjacent to the receiving frequency band of the second communication device; determining to adjust the spread spectrum resources based on the first signal, and the spread spectrum resources are spectrum resources that expand the transmission frequency band of the first communication device; outputting a second signal through the adjusted spectrum resources, and the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources, and the second signal is a signal of the transmission frequency band of the first communication device.

[0010] In the above technical solution, a first communication device can receive a first signal from a second communication device using an adjacent frequency band. Based on this first signal, the device can adjust spread spectrum resources, reducing interference from the signal transmitted by the first communication device on the second communication device. Furthermore, this eliminates the need to increase the distance between wireless access network devices when deploying them, reducing deployment complexity and improving universal applicability. Furthermore, the second communication device does not need to be modified, which can reduce modification costs to a certain extent.

[0011] In combination with the first aspect, in some possible implementations of the first aspect, the above-mentioned determination of adjusting the spread spectrum resources based on the first signal includes: determining the spatial isolation between the first communication device and the second communication device based on a third signal, where the third signal is the first signal, or the processed first signal; determining the spatial isolation difference based on the spatial isolation and a predefined target spatial isolation, where the spatial isolation difference is the difference between the spatial isolation and the target spatial isolation; and determining to adjust the spread spectrum resources when the spatial isolation difference is less than zero.

[0012] That is, the first communication device may determine the spatial isolation according to the first signal or the processed first signal, and further determine the spatial isolation difference.

[0013] In another implementation, the processing of the first signal includes amplification and / or conversion of an analog signal into a digital signal, etc., which is not limited in this application.

[0014] In another implementation, the first communication device can obtain multiple signals, which may be signals transmitted by different communication devices, wherein the multiple signals include a first signal, which is a signal transmitted by the second communication device. The first communication device can obtain the first signal by filtering other signals except the first signal from the obtained multiple signals.

[0015] It should be understood that the first communication device determines whether to adjust the spread spectrum resources based on the spatial isolation difference, which is only a possible implementation method and should not constitute any limitation to this application. For example, in another implementation method, the first communication device may also determine the spatial isolation based on the third signal, compare the spatial isolation with the target spatial isolation, and determine to adjust the spread spectrum resources when the spatial isolation is less than the target spatial isolation. Optionally, when the spatial isolation is greater than or equal to the target spatial isolation, it is determined not to adjust the spread spectrum resources. Based on the same concept, those skilled in the art can also make other possible transformations on the basis of the aforementioned implementation method, and these transformations should all fall within the scope of protection of this application.

[0016] In combination with the first aspect, in some possible implementations of the first aspect, the above method also includes: determining an adjustment amount of the spread spectrum resource based on the spatial isolation difference; adjusting the spread spectrum resource based on the adjustment amount of the spread spectrum resource to obtain the adjusted spread spectrum resource.

[0017] The first communication device can determine an adjustment amount for the spread spectrum resource based on the spatial isolation difference to facilitate adjustment of the spread spectrum resource. For example, taking an 850 MHz spectrum with an 11 MHz bandwidth, after upward spectrum spreading by 4 MHz, the bandwidth of the transmit frequency band is 15 MHz, and the bandwidth of the spread spectrum resource is 4 MHz. Assuming the spatial isolation difference is less than 0 (e.g., -6 decibels (dB)), and the original transmit power of the first communication device is 60 watts (W) at the 15 MHz bandwidth, the transmit power adjustment amount (or transmit power backoff amount) can be 12 W.

[0018] In combination with the first aspect, in some possible implementations of the first aspect, the adjustment amount of the spread spectrum resource is determined based on the spatial isolation difference, specifically including: determining the adjustment amount of the spread spectrum resource based on the spatial isolation difference and a preset mapping relationship, the preset mapping relationship including a correspondence between multiple groups of spatial isolation differences and the adjustment amount of the spread spectrum resource, and the above-mentioned multiple groups of spatial isolation differences include the above-mentioned spatial isolation difference.

[0019] In other words, the first communication device can also query the preset mapping relationship according to the spatial isolation difference to obtain the corresponding adjustment amount of the spread spectrum resource, wherein the preset mapping relationship indicates the adjustment amount of the spread spectrum resource corresponding to different spatial isolation differences.

[0020] In a second aspect, the present application provides an interference control method, which includes: a second communication device transmits a first signal, where the first signal is a signal of a transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to the receiving frequency band of the second communication device; the first communication device obtains the first signal, and determines to adjust the spread spectrum resource based on the first signal, where the spread spectrum resource is a spectrum resource expanded from the transmission frequency band of the first communication device; the first communication device outputs a second signal through the adjusted spectrum resource, where the adjusted spectrum resource includes the spectrum resource before spreading and the adjusted spread spectrum resource obtained based on the adjustment of the spread spectrum resource, and the second signal is a signal of the transmission frequency band of the first communication device.

[0021] In the above technical solution, the second communication device can transmit the first signal within its transmission frequency band. Accordingly, the first communication device can receive the first signal and, based on the first signal, adjust its spread spectrum resources to reduce interference from the signal transmitted by the first communication device on the second communication device. Furthermore, this eliminates the need to increase the deployment distance between the first and second communication devices, easing deployment complexity and improving universal applicability. Furthermore, this solution eliminates the need to modify the second communication device, while minimizing interference from the first communication device on the second, reducing modification costs to a certain extent.

[0022] In combination with the second aspect, in other possible implementations of the second aspect, the first communication device may execute the interference control method of the first aspect.

[0023] In a third aspect, the present application provides a first communication device, comprising a module or unit for implementing the method in the first aspect and any possible implementation of the first aspect. The unit or module included in the first communication device can be implemented by software and / or hardware.

[0024] In a fourth aspect, the present application provides a first communication device, comprising a processor, wherein the processor is configured to execute the interference control method described in the first aspect and any possible implementation manner of the first aspect.

[0025] In one possible design, the first communication device may further include a memory for storing instructions and data. The memory is coupled to the processor, and when the processor executes the instructions stored in the memory, the method described in the first aspect and any possible implementation of the first aspect may be implemented.

[0026] In another possible design, the first communication device may further include a communication interface, which is used for the first communication device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module or other type of communication interface.

[0027] In a fifth aspect, the present application provides a first communication device, comprising a processor and an antenna, wherein the antenna is used to receive a first signal from a second communication device, the first signal being a signal of a transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to the receiving frequency band of the second communication device; the processor is used to determine, based on the first signal, to adjust the spread spectrum resources, the spread spectrum resources being spectrum resources expanded from the transmission frequency band of the first communication device; the antenna is also used to transmit a second signal through the adjusted spectrum resources, the adjusted spectrum resources including the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources, the second signal being a signal of the transmission frequency band of the first communication device.

[0028] In a sixth aspect, the present application provides a communication system, which includes a first communication device and a second communication device, wherein the first communication device can be used to implement the method described in the above-mentioned first aspect and any possible implementation manner of the first aspect.

[0029] In the seventh aspect, the present application provides a chip system comprising at least one processor for supporting the implementation of the functions involved in the above-mentioned first aspect and any possible implementation method of the first aspect, for example, receiving or processing the data and / or information involved in the above-mentioned method.

[0030] In one possible design, the chip system further includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0031] The chip system can be composed of chips, or can include chips and other discrete devices.

[0032] In an eighth aspect, the present application provides a computer-readable storage medium comprising a computer program, which, when executed on a computer, enables the computer to implement the method described in the first aspect and any possible implementation of the first aspect.

[0033] In the ninth aspect, the present application provides a computer program product, which includes: a computer program (also referred to as code, or instructions), which, when run, enables the computer to execute the method described in the first aspect and any possible implementation of the first aspect.

[0034] It should be understood that the second to ninth aspects of the present application correspond to the technical solutions of the first aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] FIG1 is a schematic diagram of the architecture of a communication system applicable to the method provided in an embodiment of the present application;

[0036] FIG2 is a schematic diagram of the architecture of another communication system applicable to the method provided in an embodiment of the present application;

[0037] FIG3 is a schematic flow chart of an interference control method provided in an embodiment of the present application;

[0038] FIG4 is a schematic diagram of a detailed flow chart of an interference control method provided in an embodiment of the present application;

[0039] FIG5 is a schematic diagram of adjusting spread spectrum resources according to an embodiment of the present application;

[0040] FIG6 is a schematic block diagram of a communication device provided in an embodiment of the present application;

[0041] FIG7 is another schematic block diagram of a communication device provided in an embodiment of the present application;

[0042] FIG8 is another schematic block diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0043] The technical solution in this application will be described below with reference to the accompanying drawings.

[0044] To facilitate understanding of the embodiments of the present application, the following description is first made:

[0045] First, in this application, in order to clearly describe the technical solutions of the embodiments of this application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. For example, the first signal, the second signal, and the third signal are merely used to distinguish different signals and do not limit their order. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity or execution order, and words such as "first" and "second" do not necessarily mean that they are different.

[0046] Second, in this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship, but it does not exclude the situation where it indicates that the previous and next associated objects are in an "and" relationship. The specific meaning can be understood in conjunction with the context. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can mean: a, b, c; a and b; a and c; b and c; or a and b and c. Where a, b, c can be single or multiple.

[0047] Third, in this application, the terms "when," "if," and "if" all refer to the device taking appropriate action under certain objective circumstances. They do not specify a time limit, do not require the device to perform a judgment action when it is implemented, and do not imply the existence of any other limitations. For example, "if the spatial isolation difference is less than zero" or "if the spatial isolation is less than the target isolation" all refer to the device taking appropriate action under certain objective circumstances. They do not specify a time limit, do not require the device to perform a judgment action when the spatial isolation difference is less than zero or the spatial isolation is less than the target isolation when it is implemented, and do not imply the existence of any other limitations.

[0048] Fourth, in this application, "transmit" and "receive" refer to the direction of signal transmission.

[0049] For example, "the first communication device transmits the second signal" can be understood as the source of the second signal is the first communication device, and its destination can be the second communication device, or other devices (such as the first communication device is a wireless access network device, and the second communication device is also a wireless access network device, then the destination can also be a terminal). It is understandable that before the signal is transmitted from the source to the destination, it may undergo necessary processing, such as encoding, modulation, etc. After receiving the signal from the source, the destination can also perform corresponding processing, such as decoding, demodulation, etc., to interpret the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated.

[0050] Fifth, the tables in the embodiments of the present application are only examples. The values ​​of the information in each table are only examples and can be configured as other values, which are not limited by the present application. The tables do not limit the scope of protection of the present application. For example, appropriate deformation adjustments can be made based on the tables in the above text, such as splitting, merging, etc. For another example, the parameter names shown in the titles of the tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also use other values ​​or representations that can be understood by the communication device. For another example, when implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables.

[0051] In addition, the mapping relationships shown in the tables of the present application may be configured or predefined. The term "predefined" in the present application may be understood as defining, predefining, storing, pre-storing, pre-negotiating, pre-configuring, curing, or pre-burning.

[0052] Sixth, the storage referred to in this application may refer to storage in one or more memories. These one or more memories may be provided separately or integrated into an encoder, decoder, processor, or device. The one or more memories may also be provided in part separately and in part integrated into a decoder, processor, or device. The memory may be any type of storage medium and is not limited in this application.

[0053] Seventh, the solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunications system (UMTS), 5G communication system, new radio (NR) system or other evolved communication systems, as well as the next generation mobile communication system of the 5G communication system, the sixth generation (6G) communication system, or future communication systems, etc.

[0054] Eighth, in an embodiment of the present application, the wireless access network device may be a device with wireless transceiver functions, usually located on the network side, including but not limited to: the next generation base station (gNodeB, gNB) in the 5G communication system, the next generation base station in the 6G mobile communication system, the base station in the future mobile communication system, the evolved node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC), home evolved NodeB (or home Node B, HNB), base band unit (BBU), transmission reception point (TRP), transmitting point (TP), base transceiver station (BTS), etc. in the LTE system, access node, wireless relay node, wireless backhaul node, etc. in the wireless fidelity (Wi-Fi) system. The wireless access network device can also be a wireless controller, relay station, vehicle-mounted device, wearable device in the cloud radio access network (CRAN) scenario, and network equipment in future evolution networks.

[0055] In one network structure, the radio access network equipment can be coordinated by multiple RAN nodes to assist the terminal in achieving wireless access, with different RAN nodes respectively implementing part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set up separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as an RRU, AAU, or remote radio head (RRH).

[0056] In the embodiments of the present application, the first communication device may be a radio access network device such as an RRU or an AAU. This application does not limit the type of the first communication device; for example, the first communication device may also be a base station. When the first communication device is an RRU, the RRU may output a signal to be transmitted to an antenna connected thereto, and the antenna transmits the signal. When the first communication device is an AAU, the AAU may be an integrated RRU and antenna, and the AAU may transmit signals via its internal antenna.

[0057] FIG1 is a schematic diagram of the architecture of a communication system 1000 applicable to the method provided in an embodiment of the present application.

[0058] As shown in Figure 1, the communication system 1000 includes a communication device 110 and a communication device 120, wherein the spectrum resources occupied by the communication device 110 and the communication device 120 may be different. For example, the transmission frequency band (or downlink frequency band) of the communication device 110 is 869MHz to 880MHz. After upward spread of 4MHz, the transmission frequency band becomes 869MHz to 884MHz. The receiving frequency band (or uplink frequency band) of the communication device 120 is 885MHz to 889MHz. The communication device 110 can output signals within the transmission frequency band, wherein the signals output by the communication device 110 can be received by terminals within its service range, but may also be received by the communication device 120, thereby causing interference to the reception of the communication device 120, such as blocking interference, spurious interference, etc., affecting the receiving performance of the receiver. On the contrary, if the transmission frequency band of the communication device 120 is adjacent to the reception frequency band of the communication device 110 , the communication device 120 may interfere with the reception of the communication device 110 when outputting signals in the transmission frequency band.

[0059] At present, interference can be reduced by increasing the distance between adjacent devices when deploying communication equipment, but the deployment is difficult. Therefore, the present application provides an interference control method to control interference from the source end of the interference signal. For example, in the communication system shown in Figure 1, taking the communication device 110 as the source end of the interference signal, the communication device 110 can obtain a first signal, which can be a signal of the frequency band transmitted by the communication device 120, and then adaptively adjust the spread spectrum resources according to the first signal to reduce the interference of the communication device 110 to the communication device 120 caused by the spread spectrum. The specific process of the interaction between the communication device 110 and the communication device 120 and the adaptive adjustment of the spread spectrum resources by the communication device 110 according to the first signal can be found in the description below.

[0060] Fig. 2 is a schematic diagram of the architecture of another communication system 2000 applicable to the method provided in an embodiment of the present application. The communication system 2000 shown in Fig. 2 is a specific example of the communication system 1000 shown in Fig. 1 .

[0061] As shown in FIG2 , the communication system 2000 includes a radio access network 100. The radio access network 100 may include at least one base station (such as 110a and 110b in FIG2 ) and may also include at least one terminal (such as 120a-120j in FIG2 ). The base stations included in the radio access network 100 in FIG2 may be examples of the communication devices 110 and 120 in FIG1 . In one possible design, the communication system 2000 may also include a core network 200 and the Internet 30.

[0062] The base station may be a base station deployed in the air, such as a satellite base station 110a; or a base station deployed indoors, such as a micro base station or an indoor station 110b.

[0063] The terminal can be a terminal deployed in the air, such as the helicopter or drone 120i in Figure 2; it can also be a terminal deployed on the ground, such as the mobile phones 120a, 120e, 120f and 120j, vehicle 120b, computer 120g, printer 120h, etc. in Figure 2.

[0064] Base stations and terminals can be fixed or mobile. For example, they can be deployed on land, indoors or outdoors, handheld or vehicle-mounted; on water; or in the air on aircraft, balloons, and satellites.

[0065] The roles of base stations and terminals can be relative. For example, the helicopter or drone 120i in Figure 2 can be configured as a mobile base station. For 120j accessing the wireless access network 100 via 120i, 120i is a base station; however, for 110a, 120i is a terminal. That is, communication between 110a and 120i occurs via a wireless air interface protocol. Of course, communication between 110a and 120i can also occur via an inter-base station interface protocol. In this case, 120i is also a base station relative to 110a. Therefore, base stations and terminals can be collectively referred to as communication devices. 110a, 110b, and 120a-120j in Figure 2 can be referred to as communication devices having their respective functions, such as base station functions or terminal functions.

[0066] Base stations and terminals, base stations, and terminals can communicate through authorized spectrum, unlicensed spectrum, or both. They can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or both. The embodiments of this application do not limit the spectrum resources used for wireless communications.

[0067] It should be understood that FIG1 and FIG2 are only schematic diagrams, and the communication system may further include other devices, such as wireless relay devices and wireless backhaul devices, which are not shown in FIG1 and FIG2.

[0068] The interference control method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiment shown below describes the method from the perspective of the first communication device, but should not constitute any limitation on the execution subject of the method. As long as it is possible to run a program that records the code of the method provided by the embodiment of the present application, the method provided by the embodiment of the present application can be executed. For example, the first communication device can also be replaced by a component configured in the first communication device (such as a chip, a chip system, etc.), or other functional modules that can call and execute a program. The embodiment of the present application is not limited to this.

[0069] FIG3 is a schematic flow chart of an interference control method 300 provided in an embodiment of the present application. Each step in method 300 is described in detail below. FIG3 may, for example, be a schematic diagram of an interaction method between communication device 110 and communication device 120 in communication system 1000 shown in FIG1 , or a schematic diagram of an interaction method between radio access network devices (e.g., 110a and 110b) in communication system 2000 shown in FIG2 .

[0070] In step 310, a first communication device obtains a first signal.

[0071] The first signal is a signal of the transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to the receiving frequency band of the second communication device. Adjacent can be understood as that there are no other transmission frequency bands or receiving frequency bands between the transmission frequency band of the first communication device and the receiving frequency band of the second communication device. There can be a guard band between the transmission frequency band of the first communication device and the receiving frequency band of the second communication device, and the bandwidth of the guard band can be, for example, 1MHz, 5MHz, etc. There can also be no guard band between the transmission frequency band of the first communication device and the receiving frequency band of the second communication device, and this application does not limit this. The guard band can be understood as a frequency band where the transmission or reception of signals is not allowed.

[0072] For example, taking RRU 1 as the first communication device and RRU 2 as the second communication device, it is assumed that the transmitting frequency band of RRU 1 is 869MHz to 880MHz (i.e., 850MHz spectrum), and the receiving frequency band of RRU 2 is 885MHz to 889MHz (i.e., the receiving frequency band of the railway), that is, there is no other transmitting frequency band or receiving frequency band between the receiving frequency band of RRU 2 and the transmitting frequency band of RRU 1. Therefore, it can be considered that the transmitting frequency band of RRU 1 and the receiving frequency band of RRU 2 are adjacent, wherein there is a 5MHz guard band between the transmitting frequency band of RRU 1 and the receiving frequency band of RRU 2. If the 850MHz spectrum is spread upward by 4MHz, the guard band between the transmitting frequency band of RRU 1 and the receiving frequency band of RRU 2 is 1MHz. This application does not limit the bandwidth of the guard band.

[0073] It should be understood that the above-mentioned understanding of adjacent is only an example and should not constitute any limitation to the embodiments of the present application. In actual applications, after the first communication device spreads the spectrum, it may also cause interference to another receiving frequency band in addition to causing interference to the adjacent frequency band, and the other receiving frequency band may not be adjacent to the transmitting frequency band of the first communication device. For example, the first communication device takes RRU 1 as an example, and the second communication device takes RRU 2 as an example. Assuming that the transmitting frequency band of RRU 1 is 869MHz to 880MHz (i.e., 850MHz spectrum), the receiving frequency band of RRU 2 is 889MHz to 915MHz (or mobile 900MHz), and there is a receiving frequency band of 885MHz to 889MHz (i.e., the receiving frequency band of the railway) between the two, in this case, after RRU 1 spreads the spectrum upward to 884MHz, it may also cause interference to the reception of mobile 900M. In this case, the interference can also be reduced by the method provided in this application.

[0074] It should also be understood that the aforementioned adjacent transmit and receive frequency bands are merely examples and should not constitute any limitation on the embodiments of the present application. In actual applications, the transmit frequency band of the first communication device and the receive frequency band of the second communication device may also be other frequency bands, and this application does not limit this.

[0075] In an embodiment of the present application, the second communication device can output a first signal within its transmission frequency band, and the first communication device can obtain the above-mentioned first signal so as to adjust the spread spectrum resources according to the first signal to reduce interference with the second communication device. In one example, the first communication device is RRU 1, and the second communication device is RRU 2. RRU 2 can transmit the first signal through the antenna connected thereto within its transmission frequency band, and RRU 1 receives the first signal through the antenna connected thereto. In another example, the first communication device is AAU 1, and the second communication device is AAU 2. AAU 2 can transmit the first signal within the transmission frequency band, and AAU 1 receives the first signal.

[0076] The first communication device obtains the first signal. One possible design is that the first communication device obtains the first signal from an antenna. For example, if the first communication device is an RRU, the antenna connected to the RRU can receive the first signal and then output the first signal to the RRU. Accordingly, the RRU obtains the first signal.

[0077] The first communication device obtains the first signal. Another possible design is that the first communication device obtains the first signal from the first communication device. For example, if the first communication device is an AAU, the antenna inside the AAU can receive the first signal, and then the AAU obtains the first signal from the internal antenna.

[0078] In step 320, the first communications device determines to adjust the spreading resources according to the first signal.

[0079] The spread spectrum resources are spectrum resources that extend the transmit frequency band of the first communication device. As previously mentioned, the transmit frequency band of the first communication device and the receive frequency band of the second communication device are adjacent. Therefore, after the spread spectrum of the transmit frequency band of the first communication device is applied, it is likely to cause interference to the second communication device. Therefore, the first communication device can adjust the spread spectrum resources to reduce interference with the second communication device.

[0080] After receiving the first signal, the first communication device may determine, based on the first signal, whether spread spectrum resources need to be adjusted. One possible scenario is that the first communication device determines, based on the first signal, that spread spectrum resources do not need to be adjusted. Another possible scenario is that the first communication device determines, based on the first signal, that spread spectrum resources need to be adjusted.

[0081] One possible implementation method is that the first communication device determines the spatial isolation between the first communication device and the second communication device based on the first signal, and then determines the difference (which can be called the spatial isolation difference) between the above-mentioned spatial isolation and a predefined target spatial isolation (which can be understood as the minimum requirement for the spatial isolation between the first communication device and the second communication device). When the spatial isolation difference is less than zero, it is determined to adjust the spread spectrum resources; when the spatial isolation difference is greater than or equal to zero, it is determined that there is no need to adjust the spread spectrum resources. In other words, the first communication device can output the signal through the spectrum resources after spread spectrum.

[0082] It is understood that the first communication device may also directly compare the above-mentioned spatial isolation with a predefined target spatial isolation, and determine to adjust the spread spectrum resources when the spatial isolation is less than the target spatial isolation. Optionally, when the spatial isolation is greater than or equal to the target spatial isolation, it is determined that there is no need to adjust the spread spectrum resources. It should be understood that based on the same concept, those skilled in the art may also make other possible variations on the basis of the aforementioned implementation, and these variations should all fall within the scope of protection of this application.

[0083] It should be noted that, when the spectrum resources of the first communication device are not spread spectrum, the first communication device may not cause interference to the second communication device, or the calculated spatial isolation may be greater than or equal to the target spatial isolation. Therefore, the first communication device does not need to adjust the spectrum resources. In other words, the method provided in this application can also be applied to the scenario without spread spectrum. However, in the scenario without spread spectrum, the first communication device may determine that there is no need to adjust the spread spectrum resources based on the first signal, and output the signal through the current spectrum resources. Similarly, if in the scenario without spread spectrum, the first communication device may cause interference to the second communication device based on the first signal, or the calculated spatial isolation is less than the target spatial isolation, the first communication device may determine that the spread spectrum resources need to be adjusted. Then, the method provided in this application can be used to output the signal through the adjusted spectrum resources, wherein the adjusted spectrum resources include the first spectrum resources and the second spectrum resources, the first spectrum resources are the spectrum resources that have not been adjusted in the original spectrum resources, and the second spectrum resources are the adjusted spectrum resources obtained based on the adjustment of a portion of the resources in the original spectrum resources.

[0084] Another possible implementation of the first communications device determining whether to adjust spectrum resources is that the first communications device processes the first signal to obtain a processed first signal. Furthermore, based on the processed first signal, the first communications device determines the spatial isolation between the first communications device and the second communications device, and then determines the difference between the spatial isolation and a predefined target spatial isolation. If the spatial isolation difference is less than zero, the first communications device determines to adjust the spread spectrum resources; if the spatial isolation difference is greater than or equal to zero, the first communications device determines that no spread spectrum resource adjustment is necessary.

[0085] Similarly, the first communication device can also directly compare the above-mentioned spatial isolation with the predefined target spatial isolation. When the spatial isolation is less than the target spatial isolation, it determines to adjust the spread spectrum resources; when the spatial isolation is greater than or equal to the target spatial isolation, it determines that there is no need to adjust the spread spectrum resources.

[0086] One possible implementation of the above-mentioned processing of the first signal to obtain the third signal is to amplify the first signal. Another possible implementation is to convert the first signal from an analog signal to a digital signal. Yet another possible implementation is to amplify the first signal to obtain a processed first signal, and then convert the processed first signal from an analog signal to a digital signal. This application does not limit the method for processing the first signal.

[0087] For example, the first communication device may amplify the first signal through an amplifier.

[0088] For another example, the first communication device may convert the first signal from an analog signal to a digital signal through an analog-to-digital converter.

[0089] It can be understood that the first communication device can obtain the first signal through filtering by a filter, and the first signal is the signal of the transmission frequency band of the second communication device. In other words, the first communication device can filter out signals of other frequency bands (such as the receiving frequency band of the first communication device) except the transmission frequency band of the second communication device, and obtain the signal of the transmission frequency band of the second communication device (i.e., the first signal).

[0090] It should be understood that, in the present application, the first signal and the processed first signal may be collectively referred to as the third signal.

[0091] A possible implementation of determining the spatial isolation based on the third signal is that the spatial isolation is the difference between the transmit power of the second communication device and the receive power of the first communication device, and the receive power of the first communication device is determined based on the third signal.

[0092] In other words, the first communication device can determine the receiving power of the first communication device based on the third signal, and then determine the spatial isolation based on the transmitting power of the second communication device and the receiving power of the first communication device, where spatial isolation = transmitting power of the second communication device - receiving power of the first communication device.

[0093] The spatial isolation is determined based on the third signal. Another possible implementation method is that the spatial isolation is obtained by correcting the difference between the transmission power of the second communication device and the receiving power of the first communication device based on a correction coefficient, and the correction coefficient is determined based on the transmission frequency of the second communication device and the transmission frequency of the first communication device, and the receiving power of the first communication device is determined based on the third signal.

[0094] In other words, the first communication device can determine the received power of the first communication device based on the third signal, and then determine the difference between the received power of the first communication device and the transmit power of the second communication device. A correction factor is determined based on the transmit frequency of the second communication device and the transmit frequency of the first communication device. The difference is corrected based on the correction factor to obtain the spatial isolation. The correction factor can, for example, be equal to 20*log(F1 / F2), where F1 represents the transmit frequency of the first communication device and F2 represents the transmit frequency of the second communication device. Correcting the spatial isolation using the correction factor helps improve the accuracy of the calculated spatial isolation.

[0095] It should be understood that the present application does not limit the calculation formula of the correction coefficient. For example, when calculating the correction coefficient, any formula obtained by modifying the calculation formula given above falls within the scope of protection of the present application.

[0096] The process of determining the received power by the first communication device will be described in detail below.

[0097] For example, the received power is counted with a granularity of 200 kilohertz (KHz) and a sampling time of 100 microseconds (us). Each granularity is collected 2000 times, and the maximum received power among the 2000 times is taken as the received power of the granularity. If the bandwidth of the transmission frequency band of the second communication device is X MHz, X / 0.2 power values ​​are obtained, namely P1, P2, ..., PX / 0.2, and the cumulative addition is the received power of the first communication device. Among them, P1 can be the maximum power value among the 2000 received powers collected. In the present application, multiple collections for each granularity are beneficial to avoid power statistical errors caused by the second communication device being in an idle state (i.e., not transmitting a signal) at a certain stage, thereby improving the accuracy of the statistical power value.

[0098] It should be understood that the number of times each granularity is sampled (2000 times) and the size of the granularity (200KHz) are examples and should not constitute any limitation on the embodiments of this application. In actual applications, the number of times each granularity is sampled and the size of the granularity can be other values, and this application does not limit this.

[0099] In the present application, the adjustment of the spread spectrum resources includes: adjusting the transmission power of the spread spectrum resources; and / or adjusting the frequency range of the spread spectrum resources.

[0100] The spread spectrum resources include multiple resource blocks (RBs). Adjusting the transmit power of the spread spectrum resources can be understood as the first communications device adjusting the transmit power when outputting signals on these multiple RBs. Adjusting the frequency range of the spread spectrum resources can be understood as adjusting the number of RBs. The following describes in detail the adjustment of the transmit power of the spread spectrum resources and the adjustment of the frequency range of the spread spectrum resources, in conjunction with the process of determining the adjustment amount for the spread spectrum resources.

[0101] In a possible implementation, the method further includes: determining an adjustment amount of the spread spectrum resource according to the spatial isolation difference; and adjusting the spread spectrum resource according to the adjustment amount of the spread spectrum resource to obtain an adjusted spread spectrum resource.

[0102] For example, the adjustment of the spread spectrum resources includes: adjusting the transmission power of the spread spectrum resources. The first communication device can determine the adjustment amount of the transmission power (or the back-off amount of the transmission power, or the back-off amount of the transmission power at the RB level) according to the spatial isolation difference, so as to adjust the transmission power. For example, taking the 850MHz spectrum as an example, the bandwidth is 11MHz. After upward spread of 4MHz, the bandwidth is 15MHz, and the bandwidth of the spread spectrum resource is 4MHz. Assuming that the spatial isolation difference is -6dB, the original transmission power of the first communication device is 60W when the bandwidth is 15MHz, and the transmission power of the 4MHz resource is 60÷15×4=16W. Since the spatial isolation difference is -6dB, the back-off amount of the transmission power can be 16-16÷10 6 / 10 =12W.

[0103] More generally, assuming the original bandwidth is a, the spread spectrum bandwidth is a1, the transmit power when the bandwidth is a is b, and the spatial isolation difference is -c, the transmit power fallback can be (b÷a×a1-b÷a×a1÷10 c / 10 )W. Where c is a positive number.

[0104] For another example, the adjustment of the spread spectrum resources includes: adjusting the frequency range of the spread spectrum resources. Taking the adjustment of the number of multiple RBs as an example, the first communication device can determine the adjustment amount of the number of RBs (or the shrinkage amount of RBs, or the shrinkage amount of the number of RBs) according to the spatial isolation difference, so as to adjust the RBs. For example, when the original bandwidth is 15MHz, the number of RBs is 60, and the number of RBs for 4MHz resources is 60÷15×4=16. Assuming that the spatial isolation difference is -6dB, the shrinkage amount of RBs can be 16-16÷10. 6 / 10 =12 pieces.

[0105] More generally, assuming the original bandwidth is a, the spread bandwidth is a1, the number of RBs when the bandwidth is a is m, and the spatial isolation difference is -c, where c is a positive number. Then the amount of RB contraction can be (m÷a×a1-m÷a×a1÷10 c / 10 )indivual.

[0106] For another example, adjusting spread spectrum resources includes adjusting the transmit power of the spread spectrum resources and adjusting the number of multiple RBs. The first communications device may determine the amount of adjustment for the transmit power and the number of RBs based on the spatial isolation difference. For example, if the original bandwidth is 15 MHz, the number of RBs is 60, the transmit power is 60 W, and the spatial isolation difference is -6 dB, the transmit power may be reduced by 6 W, and the number of RBs may be reduced by 6.

[0107] It should be understood that the above-mentioned calculation method of the transmission power back-off amount and the RB shrinkage amount is only an example and should not impose any limitation on this application. The transmission power back-off amount and the RB shrinkage amount can also be other values.

[0108] In one possible implementation, the adjustment amount of the spread spectrum resource is determined based on the spatial isolation difference, specifically including: determining the adjustment amount of the spread spectrum resource based on the spatial isolation difference and a preset mapping relationship, the preset mapping relationship including a correspondence between multiple groups of spatial isolation differences and the adjustment amount of the spread spectrum resource, and the above-mentioned multiple groups of spatial isolation differences include the above-mentioned spatial isolation difference.

[0109] In other words, the first communication device can query the preset mapping relationship according to the spatial isolation difference to obtain the corresponding adjustment amount of the spread spectrum resource, wherein the preset mapping relationship includes the adjustment amount of the spread spectrum resource corresponding to different spatial isolation differences.

[0110] For example, taking the example of adjusting the spread spectrum resources including adjusting the transmit power of the spread spectrum resources, the first communication device may pre-store multiple sets of correspondences between spatial isolation differences and transmit power adjustment amounts, and then determine the transmit power adjustment amount based on the calculated spatial isolation differences and the above correspondences.

[0111] Table 1

[0112] As shown in Table 1, different spatial isolation differences correspond to different transmit power back-off amounts. The first communication device can query the transmit power back-off amount corresponding to the spatial isolation difference based on the calculated spatial isolation difference.

[0113] It should be understood that Table 1 is merely an example and does not constitute any limitation on the embodiments of this application. In practical applications, Table 1 may also store the corresponding relationship between the range of spatial isolation difference and the amount of transmit power backoff, which is not limited by this application. In addition, the values ​​in the table are merely examples and can be configured to other values, which are not limited by this application.

[0114] For another example, the adjustment of the spread spectrum resources includes adjusting the number of RBs. The first communication device may pre-store multiple sets of correspondences between spatial isolation differences and RB shrinkage amounts, and then determine the RB shrinkage amount based on the calculated spatial isolation differences and the above correspondences.

[0115] Table 2

[0116] As shown in Table 2, different spatial isolation differences correspond to different RB shrinkage amounts. The first communication device can query the above correspondence according to the calculated spatial isolation difference to obtain the corresponding RB shrinkage amount.

[0117] It should be understood that Table 2 is merely an example and should not constitute any limitation on the embodiments of this application. In actual applications, Table 1 may also store the corresponding relationship between the range of spatial isolation difference and the amount of RB shrinkage, which is not limited by this application. In addition, the values ​​in the table are merely examples and can be configured to other values, which are not limited by this application.

[0118] In step 330, the first communication device outputs a second signal using the adjusted spectrum resources.

[0119] The adjusted spectrum resources include the spectrum resources before spreading and the adjusted spreading resources obtained based on the adjustment of the spreading resources, and the second signal is a signal of the transmission frequency band of the first communication device.

[0120] Exemplarily, after adjusting the spread spectrum resources, the first communication device may output the second signal using the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources (ie, based on the adjusted spectrum resources).

[0121] For example, taking the original 15MHz bandwidth and the number of RBs as 60, and shrinking 12 RBs as an example, the first communication device can output the second signal through 60-12=48 RBs. When outputting the second signal through these 48 RBs, the transmission power of the first communication device can remain unchanged or increase, which is not limited in this application.

[0122] For another example, taking the original 15MHz bandwidth and 60W transmit power as an example, and adjusting the transmit power back off to 12W, when the first communication device outputs the second signal through the expanded spectrum resources (e.g., 4MHz), the transmit power is 60-12=48W. When the first communication device outputs the second signal through the spectrum resources before spectrum expansion, its transmit power can remain unchanged or increase, and this application does not limit this.

[0123] In one possible design, if the first communication device is an RRU, the first communication device may output the second signal using the adjusted spectrum resources, including: the RRU may output the second signal to an antenna using the adjusted spectrum resources, and the antenna may transmit the second signal. In another possible design, if the first communication device is an AAU, the first communication device may output the second signal using the adjusted spectrum resources, including: the AAU may transmit the second signal using the adjusted spectrum resources.

[0124] Figure 4 is a detailed flowchart of the interference control method provided in an embodiment of the present application. Figure 4 exemplarily illustrates the detailed process of the method shown in Figure 3 , and the detailed process of the interference control method will be described below in conjunction with Figure 4 . In the embodiment shown in Figure 4 , the first communication device is RRU 1, and the second communication device is RRU 2.

[0125] In step 410, RRU 1 obtains a first signal.

[0126] The first signal is a signal transmitted by RRU 2 through an antenna connected thereto, and is a signal in the transmit frequency band of RRU 2. The receive frequency band of RRU 2 is adjacent to the transmit frequency band of RRU 1, and RRU 2 can be called an adjacent frequency RRU.

[0127] For example, RRU 2 transmits a first signal through an antenna within its own transmission frequency band, and RRU 1 obtains the first signal. For a more detailed description of obtaining the first signal, please refer to FIG3 and will not be repeated here.

[0128] One possible design is that RRU 1 obtains the first signal, including: RRU 1 obtains the first signal from the antenna. In other words, RRU 1 does not include an antenna. For example, the antenna connected to RRU 1 receives multiple signals, and the multiple signals may be signals transmitted by different communication devices. The antenna outputs the multiple signals to a coupler, and the coupler outputs the multiple signals to a first filter and a second filter, respectively. The first filter can filter the signals from the coupler for signals in frequency bands other than the receiving frequency band of RRU 1 to obtain the signal in the receiving frequency band of RRU 1. The second filter can filter the signals from the coupler for signals in frequency bands other than the transmitting frequency band of RRU 2 to obtain the signal in the transmitting frequency band of RRU 2 (i.e., the first signal).

[0129] In another possible design, the first communication device may be AAU 1. AAU 1 may be an integrated RRU and an antenna. In this case, AAU 1 includes the antenna. AAU 1 obtaining the first signal may be understood as AAU 1 receiving the first signal from the second communication device.

[0130] In step 420, RRU 1 calculates power statistics of the first signal in segments.

[0131] For example, RRU 1 can sample the received power of the signal according to a preset granularity and sampling time to calculate the received power. For example, the received power can be calculated using a granularity of 200 kHz and a sampling time of 100 μs. The received power is sampled 2000 times at each granularity, and the maximum received power among the 2000 samples is used as the received power at that granularity. If the bandwidth of RRU 2's transmit frequency band is X MHz, then X / 0.2 power values ​​are obtained, namely P1, P2, ..., PX / 0.2.

[0132] In step 440, RRU 1 accumulates and obtains the total received power of the RRU 2 signal.

[0133] The cumulative sum of the above P1, P2, ..., PX / 0.2 is the received power of RRU 1, or the total received power of the RRU 2 signal.

[0134] In step 440, RRU 1 calculates the spatial isolation.

[0135] RRU 1 calculates the spatial isolation based on the total received power and the transmit power (which may be pre-stored) of RRU 2. For a specific calculation method of the spatial isolation, please refer to the relevant explanation of FIG3 .

[0136] In step 450, RRU 1 determines whether the spatial isolation is less than the target spatial isolation.

[0137] The target spatial isolation is the minimum requirement for the spatial isolation between RRU 1 and RRU 2. In other words, under the target spatial isolation, RRU 1 can be considered to not cause interference to RRU 2, or the interference to RRU 2 is within its tolerance range.

[0138] If the spatial isolation is greater than or equal to the target spatial isolation, step 460 is executed; if the spatial isolation is less than the target spatial isolation, steps 470 to 490 are continued.

[0139] In step 460, power is not backed off and RBs are not shrunk.

[0140] If the spatial isolation is greater than or equal to the target spatial isolation, RRU 1 does not need to adjust the transmit power and the number of RBs. In other words, RRU 1 can continue to output signals at the current power through the maximum number of RBs to achieve better performance.

[0141] In step 470, RRU 1 calculates the spatial isolation difference.

[0142] The spatial isolation difference is calculated based on the spatial isolation and the target spatial isolation, where the spatial isolation difference = spatial isolation - target spatial isolation.

[0143] In step 480, RRU 1 determines a transmit power back-off amount and / or a RB shrinkage amount based on the spatial isolation difference.

[0144] After calculating the spatial isolation difference, RRU 1 can determine the transmit power backoff amount and / or the RB shrinkage amount based on the spatial isolation difference. The process of RRU 1 determining the transmit power backoff amount and / or the RB shrinkage amount can be seen in the relevant description of FIG3.

[0145] In step 490, RRU 1 outputs a signal based on the adjusted spectrum resources.

[0146] The adjusted spectrum resources include the spectrum resources before spreading and the adjusted spreading resources obtained based on the adjustment of the spreading resources (such as transmit power backoff and / or RB shrinkage).

[0147] After adjusting the spread spectrum resources, RRU 1 may output a signal to the antenna based on the adjusted spectrum resources, and transmit the signal through the antenna.

[0148] Figure 5 is a schematic diagram of adjusting spread spectrum resources according to an embodiment of the present application. In Figure 5 , 850 MHz spectrum is taken as an example.

[0149] As shown in a) of FIG5 , the transmit frequency band (or downlink frequency band) of the 850 MHz spectrum is 869 MHz to 880 MHz with a bandwidth of 11 MHz. After spreading by 4 MHz, it becomes 869 MHz to 884 MHz with a bandwidth of 15 MHz.

[0150] As shown in b) in Figure 5, the first communication device determines to adjust the transmission power of the spread spectrum resources based on the first signal. It can be seen from b) in Figure 5 that when the first communication device transmits signals through the expanded spectrum resources (such as 4MHz), the transmission power is backed off, that is, the transmission power is reduced.

[0151] As shown in c) in Figure 5, the first communication device determines to adjust the number of RBs based on the first signal. Assuming that there are 60 RBs in total, it can be seen from c) in Figure 5 that the number of RBs included in the spread spectrum resources is reduced (assuming that 12 RBs are reduced).

[0152] As shown in d) in Figure 5, the first communication device determines to adjust the transmission power and the number of RBs of the spread spectrum resources based on the first signal. Assuming that there are 60 RBs in total and the original transmission power is 60W, it can be seen from d) in Figure 5 that the number of RBs included in the spread spectrum resources is reduced (assuming that 6 RBs are reduced).

[0153] In the above technical solution, a first communication device can receive a first signal from a second communication device using an adjacent frequency band. Based on this first signal, the device can adjust spread spectrum resources, reducing interference from the signal transmitted by the first communication device on the second communication device. Furthermore, this eliminates the need to increase the distance between wireless access network devices when deploying them, reducing deployment complexity and improving universal applicability. Furthermore, the second communication device does not need to be modified, which can reduce modification costs to a certain extent.

[0154] FIG6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. As shown in FIG6 , the communication device 600 may include an acquisition module 610 , a processing module 620 , and an output module 630 .

[0155] In one possible design, the communication device 600 may correspond to the first communication device in the above method embodiment, for example, the first communication device, or a component (such as a chip, a chip system, etc.) configured for use in the first communication device. The modules in the communication device 600 may be used to implement the embodiment shown in FIG. 3 or FIG. 4 .

[0156] For example, when the communication device 600 is used to implement the embodiment shown in Figure 3, the acquisition module 610 can be used to acquire a first signal, where the first signal is a signal of the transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to the receiving frequency band of the second communication device; the processing module 620 can be used to determine the adjustment of the spread spectrum resources based on the first signal, and the spread spectrum resources are spectrum resources expanded from the transmission frequency band of the first communication device; the output module 630 is used to output a second signal through the adjusted spectrum resources, and the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources, and the second signal is a signal of the transmission frequency band of the first communication device.

[0157] In one possible implementation, the communication device 600 may be an RRU, and the acquisition module 610 acquires the first signal. It can be understood that the acquisition module 610 can acquire the first signal from the antenna. In other words, the antenna receives the first signal transmitted by the second communication device and further outputs it to the acquisition module 610.

[0158] As an example and not a limitation, an antenna can receive multiple signals, which can be signals transmitted by different communication devices. The multiple signals include a first signal in the transmission frequency band of a second communication device. Furthermore, the antenna outputs the multiple signals to a coupler, and the coupler outputs the multiple signals to a first filter and a second filter, respectively. The multiple signals include a first signal and a fourth signal, wherein the first signal is a signal in the transmission frequency band of the second communication device, and the fourth signal is a signal in the reception frequency band of the first communication device. The first filter is used to filter the multiple signals from the coupler except the fourth signal, to obtain and output the fourth signal. The second filter is used to filter the multiple signals from the coupler except the first signal, to obtain and output the first signal.

[0159] When the communication device 600 is an RRU, the output module 630 is used to output the second signal through the adjusted spectrum resources. It can be understood that the output module 630 is used to output the second signal to the antenna through the adjusted spectrum resources, and then transmit the second signal through the antenna.

[0160] In another possible implementation, the communication device 600 may be an AAU. The acquisition module 610 acquires the first signal, which can be understood as the acquisition module 610 receiving the first signal from the second communication device. The output module 630 is configured to output the second signal using the adjusted spectrum resources, which can be understood as the output module 630 transmitting the second signal using the adjusted spectrum resources.

[0161] In one possible implementation, the processing module 620 is specifically used to: determine the spatial isolation between the first communication device and the second communication device based on a third signal, where the third signal is the first signal, or the processed first signal; determine the spatial isolation difference based on the spatial isolation and a predefined target spatial isolation, where the spatial isolation difference is the difference between the spatial isolation and the target spatial isolation; and determine to adjust the spread spectrum resources when the spatial isolation difference is less than zero.

[0162] In another possible implementation, the processing module 620 is further configured to: determine an adjustment amount of the spread spectrum resource according to the spatial isolation difference; and adjust the spread spectrum resource according to the adjustment amount of the spread spectrum resource to obtain an adjusted spread spectrum resource.

[0163] The processing module 620 is used to determine the adjustment amount of the spread spectrum resource based on the spatial isolation difference, specifically including: determining the adjustment amount of the spread spectrum resource based on the spatial isolation difference and a preset mapping relationship, the preset mapping relationship including a correspondence between multiple groups of spatial isolation differences and the adjustment amount of the spread spectrum resource, and the multiple groups of spatial isolation differences including the spatial isolation difference.

[0164] It should be understood that the specific process of each module executing the above corresponding steps has been described in detail in the above method embodiment, and for the sake of brevity, it will not be repeated here.

[0165] It should also be understood that the division of modules in the embodiments of the present application is illustrative and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the present application may be integrated into a single processor, or may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0166] Figure 7 is another schematic block diagram of a communication device 700 provided in an embodiment of the present application. As shown in Figure 7, the communication device 700 may include a processor 710 and an antenna 720. For example, the communication device 700 may be an AAU, which may be used to implement the embodiment shown in Figure 3 or Figure 4.

[0167] In one possible design, a communication device 700 is configured to implement the embodiment shown in FIG3 . An antenna 720 may receive a first signal from a second communication device, the first signal being a signal in a transmit frequency band of the second communication device, the transmit frequency band of the first communication device being adjacent to a receive frequency band of the second communication device. The processor 710 may be configured to determine, based on the first signal, to adjust spread spectrum resources, the spread spectrum resources being spectrum resources that extend the transmit frequency band of the first communication device. The antenna 720 may also be configured to transmit a second signal using the adjusted spectrum resources, the adjusted spectrum resources including the spectrum resources before spread spectrum and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources, the second signal being a signal in the transmit frequency band of the first communication device. It should be understood that the specific process of each device executing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiment and will not be further described here for the sake of brevity.

[0168] Figure 8 is another schematic block diagram of a communication device 800 provided in an embodiment of the present application. As shown in Figure 8, the communication device 800 may include at least one processor 810 for implementing the steps performed by the first communication device in the embodiment shown in Figure 3 or Figure 4. For example, the communication device 800 may be an RRU, configured to implement the steps performed by the first communication device in the embodiment shown in Figure 3 or Figure 4.

[0169] Exemplarily, when the communication device 800 is an RRU, used to implement the embodiment shown in Figure 3, the at least one processor 810 can be used to obtain a first signal, where the first signal is a signal of the transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to the receiving frequency band of the second communication device; based on the first signal, determine to adjust the spread spectrum resources, where the spread spectrum resources are spectrum resources expanded from the transmission frequency band of the first communication device; output a second signal through the adjusted spectrum resources, where the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources, and the second signal is a signal of the transmission frequency band of the first communication device.

[0170] Among them, obtaining the first signal can be understood as obtaining the first signal from the antenna connected to the communication device 800. For example, the antenna receives the first signal from the second communication device and outputs it to the processor 810 of the communication device 800. In other words, the processor 810 obtains the first signal from the antenna.

[0171] In one possible design, the communication device 800 may further include at least one memory 820 for storing program instructions and / or data. The memory 820 is coupled to the processor 810. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be electrical, mechanical, or other forms, and is used for information exchange between devices, units, or modules. The processor 810 may operate in conjunction with the memory 820. The processor 810 may execute program instructions stored in the memory 820. At least one of the at least one memory may be included in the processor.

[0172] In another possible design, the communication device 800 may further include a communication interface 830 for communicating with other devices via a transmission medium, so that the communication device 800 can communicate with other devices. The communication interface 830 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of performing transceiver functions. The processor 810 may use the communication interface 830 to transmit and receive data and / or information, and to implement the method performed by the first communication device in the embodiment shown in Figure 3 or Figure 4. For example, the processor 810 may use the communication interface 830 to output a second signal (such as outputting the second signal to an antenna, which transmits the second signal).

[0173] The specific connection medium between the processor 810, memory 820, and communication interface 830 is not limited in the embodiments of the present application. In Figure 8, the processor 810, memory 820, and communication interface 830 are connected via a bus 840. Bus 840 is represented by a bold line in Figure 8, and the connection methods between other components are only for schematic illustration and are not limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in Figure 8, but this does not mean that there is only one bus or one type of bus.

[0174] The present application also provides a chip system, which includes at least one processor for implementing the functions involved in the method described in the embodiment shown in Figure 3 or Figure 4 above, for example, receiving or processing the data and / or information involved in the above method.

[0175] In one possible design, the chip system further includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.

[0176] The chip system can be composed of chips, or can include chips and other discrete devices.

[0177] The present application also provides a computer-readable storage medium, on which a computer program (also referred to as code or instruction) is stored. When the computer program is executed by a processor, the method described in the embodiment shown in FIG. 3 or FIG. 4 is executed.

[0178] The present application also provides a computer program product, which includes: a computer program (also referred to as code, or instructions), which, when executed, enables a computer to execute the method described in the embodiment shown in FIG. 3 or FIG. 4 .

[0179] It should be understood that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above-mentioned method embodiment can be completed by hardware integrated logic circuits in the processor or by software instructions. The above-mentioned processor can be 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, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium well-known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above-mentioned method.

[0180] It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0181] The terms "unit", "module", etc. used in this specification can be used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. The terms "unit" and "module" in the embodiments of this application have the same meaning and can be used interchangeably.

[0182] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed devices, equipment, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is only one logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, and can be electrical, mechanical, or other forms.

[0183] In the above embodiments, the functions of each functional unit 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 (programs). When the computer program instructions (program) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. 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 data center that includes one or more available media integrated therein. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, digital versatile discs (DVDs)), or semiconductor media (eg, solid state drives (SSDs)).

[0184] If the functions provided by the embodiments of the present application are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0185] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An interference control method, characterized in that: Applied to a first communication device, the method includes: Acquire a first signal, where the first signal is a signal of a transmission frequency band of a second communication device, and the transmission frequency band of the first communication device is adjacent to a reception frequency band of the second communication device; Determine, according to the first signal, to adjust a spread spectrum resource, where the spread spectrum resource is a spectrum resource that expands a transmission frequency band of the first communication device; A second signal is outputted through the adjusted spectrum resources, wherein the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spreading resources obtained based on the adjustment of the spreading resources, and the second signal is a signal of the transmission frequency band of the first communication device.

2. The method according to claim 1, characterized in that The adjustment of the spread spectrum resources includes: adjusting the transmission power of the spread spectrum resources; and / or adjusting the frequency range of the spread spectrum resources.

3. The method according to claim 1 or 2, characterized in that The step of determining, according to the first signal, to adjust the spread spectrum resource comprises: determining a spatial isolation between the first communication device and the second communication device according to a third signal, wherein the third signal is the first signal or the processed first signal; Determining a spatial isolation difference according to the spatial isolation and a predefined target spatial isolation, wherein the spatial isolation difference is a difference between the spatial isolation and the target spatial isolation; When the spatial isolation difference is less than zero, it is determined to adjust the spread spectrum resources.

4. The method according to claim 3, characterized in that The spatial isolation is a difference between a transmission power of the second communication device and a reception power of the first communication device, and the reception power of the first communication device is determined based on the third signal.

5. The method according to claim 3, characterized in that The spatial isolation is obtained by correcting the difference between the transmission power of the second communication device and the receiving power of the first communication device based on a correction coefficient, wherein the correction coefficient is determined based on the transmission frequency of the second communication device and the transmission frequency of the first communication device, and the receiving power of the first communication device is determined based on the third signal.

6. The method according to any one of claims 3 to 5, characterized in that The method further comprises: Determining an adjustment amount of the spread spectrum resource according to the spatial isolation difference; The spread spectrum resource is adjusted according to the adjustment amount of the spread spectrum resource to obtain the adjusted spread spectrum resource.

7. The method according to claim 6, characterized in that The step of determining the adjustment amount of the spread spectrum resource according to the spatial isolation difference specifically includes: The adjustment amount of the spread spectrum resource is determined according to the spatial isolation difference and a preset mapping relationship, wherein the preset mapping relationship includes a correspondence between multiple groups of spatial isolation differences and the adjustment amount of the spread spectrum resource, and the multiple groups of spatial isolation differences include the spatial isolation difference.

8. A first communication device, characterized in that: include: an acquisition module, configured to acquire a first signal, where the first signal is a signal of a transmission frequency band of a second communication device, and the transmission frequency band of the first communication device is adjacent to a reception frequency band of the second communication device; a processing module, configured to determine, according to the first signal, to adjust a spread spectrum resource, wherein the spread spectrum resource is a spectrum resource expanded by a transmission frequency band of the first communication device; An output module is used to output a second signal through the adjusted spectrum resources, wherein the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources, and the second signal is a signal of the transmission frequency band of the first communication device.

9. The first communication device according to claim 8, characterized in that The adjustment of the spread spectrum resources includes: adjusting the transmission power of the spread spectrum resources; and / or adjusting the frequency range of the spread spectrum resources.

10. The first communication device according to claim 8 or 9, characterized in that: The processing module is specifically used for: determining a spatial isolation between the first communication device and the second communication device according to a third signal, wherein the third signal is the first signal or the processed first signal; Determining a spatial isolation difference according to the spatial isolation and a predefined target spatial isolation, wherein the spatial isolation difference is a difference between the spatial isolation and the target spatial isolation; When the spatial isolation difference is less than zero, it is determined to adjust the spread spectrum resources.

11. The first communication device according to claim 10, characterized in that The spatial isolation is a difference between a transmission power of the second communication device and a reception power of the first communication device, and the reception power of the first communication device is determined based on the third signal.

12. The first communication device according to claim 10, characterized in that The spatial isolation is obtained by correcting the difference between the transmission power of the second communication device and the receiving power of the first communication device based on a correction coefficient, wherein the correction coefficient is determined based on the transmission frequency of the second communication device and the transmission frequency of the first communication device, and the receiving power of the first communication device is determined based on the third signal.

13. The first communication device according to any one of claims 10 to 12, characterized in that: The processing module is also used for: Determining an adjustment amount of the spread spectrum resource according to the spatial isolation difference; The spread spectrum resource is adjusted according to the adjustment amount of the spread spectrum resource to obtain the adjusted spread spectrum resource.

14. The first communication device according to claim 13, characterized in that The processing module is used to determine the adjustment amount of the spread spectrum resource according to the spatial isolation difference, specifically including: The adjustment amount of the spread spectrum resource is determined according to the spatial isolation difference and a preset mapping relationship, wherein the preset mapping relationship includes a correspondence between multiple groups of spatial isolation differences and the adjustment amount of the spread spectrum resource, and the multiple groups of spatial isolation differences include the spatial isolation difference.

15. An interference control method, characterized in that: include: The second communication device transmits a first signal, where the first signal is a signal of a transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to a reception frequency band of the second communication device; The first communication device acquires the first signal, and determines to adjust a spread spectrum resource according to the first signal, where the spread spectrum resource is a spectrum resource that expands a transmission frequency band of the first communication device; The first communication device outputs a second signal through the adjusted spectrum resources, the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spreading resources obtained based on the adjustment of the spreading resources, and the second signal is a signal of the transmission frequency band of the first communication device.

16. The method according to claim 15, characterized in that The first communication device acquiring the first signal includes: The first communication device acquires the first signal from the first communication device.

17. The method according to claim 15, characterized in that The first communication device acquiring the first signal includes: The first communication device acquires the first signal from an antenna.

18. A first communication device, characterized in that: comprising a processor and an antenna, wherein: The antenna is used to receive a first signal from a second communication device, where the first signal is a signal of a transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to a reception frequency band of the second communication device; The processor is configured to determine, according to the first signal, to adjust a spread spectrum resource, where the spread spectrum resource is a spectrum resource that expands a transmission frequency band of the first communication device; The antenna is also used to transmit a second signal through the adjusted spectrum resources, and the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources. The second signal is a signal of the transmission frequency band of the first communication device.

19. A communication system, characterized in that: It includes a first communication device and a second communication device, wherein: The second communication device is used to transmit a first signal, where the first signal is a signal of a transmission frequency band of the second communication device, and the transmission frequency band of the first communication device is adjacent to a receiving frequency band of the second communication device; The first communication device is configured to obtain the first signal, and determine to adjust a spread spectrum resource according to the first signal, where the spread spectrum resource is a spectrum resource that expands a transmission frequency band of the first communication device; The first communication device is also used to output a second signal through the adjusted spectrum resources, and the adjusted spectrum resources include the spectrum resources before spreading and the adjusted spread spectrum resources obtained based on the adjustment of the spread spectrum resources. The second signal is a signal of the transmission frequency band of the first communication device.

20. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or instruction. When the computer program or instruction is executed by a computer, the method according to any one of claims 1 to 7 is implemented.

21. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed by a computer, the method according to any one of claims 1 to 7 is implemented.

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