Communication method and device

Abstract

The present application provides a communication method and apparatus relating to the field of communication technology. This application can address the problem of a terminal device receiving a signal from one communication system and receiving interference from another communication system. The method includes a terminal device receiving first information from a first system. The first information is used to indicate a parameter configuration of a reference signal of a second system. The first system uses a first wireless access technology, and the second system uses a second wireless access technology, where the first wireless access technology and the second wireless access technology are different. The terminal device eliminates interference from the second system's signal from the received signal based on the parameter configuration of the second system's reference signal.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to a communication method and apparatus. Background Art

[0002] With the continuous development and evolution of wireless communication technologies, wireless spectrum resources are becoming increasingly scarce. To fully utilize wireless spectrum resources, multiple systems using different radio access technologies are often deployed simultaneously within the same frequency band. For example, in frequency bands below 6 GHz, systems using both Long Term Evolution (LTE) and 5G New Radio (5G NR) can be deployed simultaneously.

[0003] Therefore, when multiple systems are deployed simultaneously in the same frequency band, the reference signal sent by a cell of one system will interfere with other communication systems. Summary of the Invention

[0004] Embodiments of the present application provide a communication method and apparatus for solving the problem that a terminal device receives interference from a reference signal from another communication system when receiving a signal from another communication system.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] In a first aspect, a communication method is provided, comprising: a terminal device receiving first information from a first system. The first information is used to indicate parameter configuration of a reference signal of a second system. The first system utilizes a first radio access technology, and the second system utilizes a second radio access technology, where the first radio access technology is different from the second radio access technology.

[0007] Based on the above technical solution, a network device in the first system transmits first information indicating the parameter configuration of a reference signal of the second system to a terminal device, thereby enabling the terminal device to determine the parameter configuration of the reference signal of the second system. This allows the terminal device to obtain the reference signal of the second system based on the parameter configuration of the reference signal of the second system, thereby potentially reducing interference from the reference signal on the received signal of the first system. For example, the terminal device can suppress interference from the reference signal of the second system in the received signal by, for example, reconstructing the reference signal of the second system based on the parameter configuration of the reference signal of the second system.

[0008] In one possible design, before the terminal device receives the first information from the network device of the first system, when the channel quality of the downlink signal is lower than a preset threshold value, the terminal device sends second information to the network device. The second information is used to indicate to the network device that the terminal device needs the network device to send the first information. Based on the above design, the network device of the first system can send the above first information to the terminal device after receiving the second information. When the terminal device is less interfered with (i.e., the channel quality of the terminal device is good), the terminal device does not need to send the second information to the network device of the first system, and the network device does not need to send the first information to the terminal device, thereby reducing the occupation of air interface resources.

[0009] In one possible design, before the terminal device receives the first information from the network device of the first system, the method may further include: the terminal device sending third information to the network device of the first system. The third information is used to indicate to the network device of the first system the number of interference signals processed by the terminal device, where the interference signals are reference signals of the second system. Based on the above design, the network device can determine the parameter configuration for sending several reference signals of the second system to the terminal device based on the number of interference signals processed by the terminal device indicated by the third information.

[0010] In one implementation, the third information is specifically used to indicate the maximum number of interference signals that the terminal device can process. Exemplarily, the terminal device can determine, based on its own processing capability, that the terminal device can reduce the maximum interference from N reference signals of the second system, that is, the maximum number of interference signals that the terminal device can process is N; then the terminal device sends the third information indicating the number N to the network device. In this way, the network device can determine that the terminal device can process a maximum of N interference signals, and thus send the parameter configuration of the reference signal of the second system, the number of which matches the processing capability of the terminal device, to the terminal device. For example, after determining that the terminal device can process a maximum of N interference signals, the network device sends the parameter configuration of the reference signal of the N second system to the terminal device; for another example, after determining that the terminal device can process a maximum of N interference signals, the network device sends the parameter configuration of the reference signal of the second system less than N to the terminal device.

[0011] In another implementation, the third information is specifically used to indicate the number of interference signals that the terminal device needs to process. For example, the terminal device can determine, based on information such as the channel quality of the current downlink channel, the number M of reference signals of the second system that interfere with the terminal device, i.e., determine that the number of interference signals that the terminal device needs to process is M. The terminal device then sends third information indicating this number M to the network device. This allows the network device to determine that the terminal device needs to process M interference signals and, accordingly, sends parameter configurations for the second system reference signals to the terminal device, a number that matches the number required by the terminal device.

[0012] In one possible design, a terminal device receives first information from a network device of a first system, including: the terminal device receives first radio resource control (RRC) signaling from the network device of the first system. The first RRC signaling includes first information for indicating configuration information of a reference signal of the second system.

[0013] In one possible design, before the terminal device performs interference suppression on the interference signal from the second system in the received signal according to the parameter configuration of the reference signal of the second system indicated by the first RRC signaling, the method may further include: the terminal device receives first downlink control information (Downlink Control Information, DCI) from the network device. The first DCI is used to instruct the terminal device to activate the parameter configuration. Through this semi-static scheduling, when interference suppression is needed, the terminal can activate the interference suppression through the DCI sent by the network device to improve the downlink reception demodulation performance; when interference suppression is not needed, it can be deactivated through the DCI sent by the network device, and no interference suppression is performed, thereby reducing the energy consumption caused by interference suppression.

[0014] In one possible design, the terminal device receiving first information from a network device of the first system may include: the terminal device receiving second DCI from the network device of the first system. The second DCI includes the first information. By transmitting the first information on the second DCI, the network device can timely send different first information required for interference suppression to the terminal device in real time.

[0015] In one possible design, the above-mentioned parameter configuration includes a first parameter configuration and a second parameter configuration. The terminal device receives the first information from the network device of the first system, which may include: the terminal device receives the second RRC signaling and the third DCI from the network device of the first system, the second RRC signaling includes information for indicating the first parameter configuration; the third DCI includes information for indicating the second parameter configuration. In the above design, the information in the parameter configuration that changes slowly or occupies a large overhead can be used as the first parameter configuration and carried on the RRC signaling for transmission; the information in the parameter configuration that changes quickly or occupies a small overhead can be used as the second parameter configuration and carried on the DCI signaling for transmission. It is possible to take advantage of the small transmission delay of DCI to ensure the rapid transmission of information in the parameter configuration that occupies a small overhead or changes quickly; and it is possible to avoid excessive DCI overhead.

[0016] In one possible design, the above parameter configuration may include time-frequency position indication information of the reference signal and indication information of reference signal generation parameters. For example, the above parameter configuration includes one or more of the following parameters: the physical cell identifier PCI of the second cell in the second system, the subframe number offset value corresponding to the cell-specific reference signal CRS, the number of antenna ports, the system bandwidth, the center subcarrier position, the type of cyclic prefix, and the time-frequency position of the multicast / multicast single frequency network MBSFN subframe. Based on the above design, the terminal device can use the above parameters in the parameter configuration to reconstruct the CRS of the second cell, thereby achieving interference cancellation of the CRS of the second cell and achieving the effect of interference suppression on the signal from the first system.

[0017] In one possible design, the first radio access technology is LTE technology, and the second radio access technology is 5GNR technology. Based on the above design, when the terminal device receives a signal from the 5GNR system, it can suppress interference from the signal from the LTE system.

[0018] According to a second aspect, a communication method is provided, comprising: a network device of a first system sending first information to a terminal device. The first information indicates a parameter configuration of a reference signal of a second system. The first system utilizes a first radio access technology, and the second system utilizes a second radio access technology, where the first radio access technology is different from the second radio access technology.

[0019] Based on the above technical solution, a network device in the first system transmits first information indicating the parameter configuration of the reference signal of the second system to a terminal device, thereby enabling the terminal device to determine the parameter configuration of the reference signal of the second system. In this way, the terminal device can suppress interference caused by the reference signal of the second system when receiving signals from the first system by, for example, reconstructing the reference signal of the second system based on the parameter configuration of the reference signal of the second system.

[0020] In one possible design, the method further includes: the network device receiving second information from the terminal device. The second information is used to indicate to the network device that the terminal device requires the network device to send the first information. Based on the above design, the network device can send the first information to the terminal device after receiving the second information. If the terminal device is subject to less interference (i.e., the channel quality of the terminal device is good), the terminal device does not need to send the second information to the network device of the first system, and the network device does not need to send the first information to the terminal device, thereby reducing the occupation of air interface resources.

[0021] In one possible design, before the network device of the first system sends the first information to the terminal device, the method further includes: the network device receiving third information from the terminal device; the third information is used to indicate to the network device of the first system the number of interference signals processed by the terminal device, where the interference signals are reference signals of the second system. Based on this design, the network device can determine parameter configurations for transmitting several reference signals of the second system to the terminal device based on the number of interference signals processed by the terminal device indicated by the third information.

[0022] In one implementation, the third information is specifically used to indicate the maximum number of interference signals that the terminal device can process. Exemplarily, the terminal device can determine, based on its own processing capability, that the terminal device can reduce the maximum interference from N reference signals of the second system, that is, the maximum number of interference signals that the terminal device can process is N; then the terminal device sends the third information indicating the number N to the network device. In this way, the network device can determine that the terminal device can process a maximum of N interference signals, and thus send the parameter configuration of the reference signal of the second system, the number of which matches the processing capability of the terminal device, to the terminal device. For example, after determining that the terminal device can process a maximum of N interference signals, the network device sends the parameter configuration of the reference signal of the N second system to the terminal device; for another example, after determining that the terminal device can process a maximum of N interference signals, the network device sends the parameter configuration of the reference signal of the second system less than N to the terminal device.

[0023] In another implementation, the third information is specifically used to indicate the number of interference signals that the terminal device needs to process. For example, the terminal device can determine, based on information such as the channel quality of the current downlink channel, the number M of reference signals of the second system that interfere with the terminal device, i.e., determine that the number of interference signals that the terminal device needs to process is M. The terminal device then sends third information indicating this number M to the network device. This allows the network device to determine that the terminal device needs to process M interference signals and, accordingly, sends parameter configurations for the second system reference signals to the terminal device, a number that matches the number required by the terminal device.

[0024] In one possible design, the network device of the first system sends the first information to the terminal device, including: the network device of the first system sends the first radio resource control RRC signaling to the terminal device. The first RRC signaling includes the first information for indicating the configuration information of the reference signal of the second system to the terminal device.

[0025] In one possible design, the method further includes: the network device sending first downlink control information (DCI) to the terminal device. The first DCI is used to instruct the terminal device to activate parameter configuration. Through this semi-static scheduling, when interference suppression is required, the terminal can activate interference suppression through the DCI sent by the network device, thereby improving downlink reception and demodulation performance; when interference suppression is not required, the terminal can deactivate the DCI sent by the network device and no longer perform interference suppression, thereby reducing energy consumption caused by interference suppression.

[0026] In one possible design, a network device of a first system sends first information to a terminal device, including: the network device of the first system sends second DCI to the terminal device. The second DCI includes the first information. By transmitting the first information on the second DCI, the network device can timely send different first information required for interference suppression to the terminal device in real time.

[0027] In one possible design, the parameter configuration includes a first parameter configuration and a second parameter configuration. The network device of the first system sends the first information to the terminal device, including: the network device of the first system sends the second RRC signaling and the third DCI to the terminal device. The second RRC signaling includes information for indicating the first parameter configuration; the third DCI includes information for indicating the second parameter configuration. In the above design, the information in the parameter configuration that changes slowly or occupies a large overhead can be used as the first parameter configuration, carried on the RRC signaling for transmission; the information in the parameter configuration that changes quickly or occupies a small overhead can be used as the second parameter configuration, carried on the DCI signaling for transmission. It is possible to take advantage of the small transmission delay of DCI to ensure the rapid transmission of information in the parameter configuration that occupies a small overhead or changes quickly; and it is possible to avoid excessive DCI overhead.

[0028] In one possible design, the parameter configuration includes time-frequency position indication information of the reference signal and indication information of the reference signal generation parameters. For example, the above parameter configuration includes one or more of the following parameters: the physical cell identifier PCI of the second cell in the second system, the subframe number offset value corresponding to the cell-specific reference signal CRS, the number of antenna ports, the system bandwidth, the center subcarrier position, the type of cyclic prefix, and the time-frequency position of the multicast / multicast single frequency network MBSFN subframe. Based on the above design, the terminal device can use the above parameters in the parameter configuration to reconstruct the CRS of the second cell, thereby achieving interference cancellation of the CRS of the second cell and achieving the effect of interference suppression on the signal from the first system.

[0029] In one possible design, the first radio access technology is Long Term Evolution (LTE) technology. The second radio access technology is 5G New Radio (5G NR) technology. Based on the above design, when receiving signals from the 5G NR system, the terminal device can suppress interference from signals from the LTE system.

[0030] In a third aspect, a communication device is provided. The communication device may be a chip or system-on-chip of a terminal device. The communication device may implement the functions performed by the terminal device in the first aspect or the possible designs described in the first aspect. These functions may be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the aforementioned functions. For example, the communication device may include a receiving unit to implement the relevant functions of the terminal device. Exemplarily, the receiving unit may be configured to receive first information from a network device of a first system. The first information indicates the parameter configuration of a reference signal of a second system; the first system utilizes a first radio access technology, and the second system utilizes a second radio access technology, the first radio access technology being different from the second radio access technology. Of course, the communication device may also include more or fewer units to implement other functions of the terminal device.

[0031] In a fourth aspect, a communication device is provided, which may be a chip or system-on-chip of a network device. The communication device may implement the functions performed by the network device in the second aspect or the possible design of the second aspect. These functions may be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. For example, the communication device may include: a sending unit to implement the relevant functions of the network device. Exemplarily, the sending unit may be used to send first information to a terminal device. The first information is used to indicate the parameter configuration of the reference signal of the second system. The first system adopts a first radio access technology, and the second system adopts a second radio access technology, and the first radio access technology is different from the second radio access technology. Of course, the communication device may also include more or fewer units to implement other functions of the network device.

[0032] In a fifth aspect, a communication device is provided, comprising one or more processors coupled to one or more memories. The one or more memories store computer instructions. When the one or more processors execute the computer instructions, the communication device performs the communication method performed by the terminal device in the first aspect or a possible design of the first aspect, or when the one or more processors execute the computer instructions, the communication device performs the communication method performed by the network device in the second aspect or a possible design of the second aspect.

[0033] In the sixth aspect, a computer-readable storage medium is provided, which stores instructions. When the instructions are executed, the communication method executed by the terminal device in the above-mentioned first aspect or a possible design in the first aspect is executed, or, when the instructions are executed, the communication method executed by the network device in the above-mentioned second aspect or a possible design in the second aspect is executed.

[0034] In the seventh aspect, a computer program product containing instructions is provided, which, when running on a computer, enables the computer to execute the communication method executed by the terminal device in the above-mentioned first aspect or a possible design in the first aspect, or enables the computer to execute the communication method executed by the network device in the above-mentioned second aspect or a possible design in the second aspect.

[0035] In an eighth aspect, a chip system is provided, comprising a processor and a communication interface for supporting a communication device in implementing the functions described in the above aspects. In one possible design, the chip system also includes a memory for storing program instructions and data necessary for the network device. It should be noted that the chip system can be composed solely of a chip or can include a chip and other discrete components.

[0036] Exemplarily, any design method in the third to eighth aspects can correspond to the above-mentioned first aspect and any possible design thereof or the second aspect and any possible design thereof, and therefore, can bring similar technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a network architecture provided in an embodiment of the present application;

[0038] Figure 2 One of the schematic diagrams of a communication system provided in an embodiment of the present application;

[0039] Figure 3 One of the flow charts of a communication method provided in an embodiment of the present application;

[0040] Figure 4 A second schematic diagram of a communication system provided in an embodiment of the present application;

[0041] Figure 5 Schematic diagram of RE occupied by CRS in a subframe;

[0042] Figure 6 A second flow chart of a communication method provided in an embodiment of the present application;

[0043] Figure 7 The third flowchart of a communication method provided in an embodiment of the present application;

[0044] Figure 8 A fourth flow chart of a communication method provided in an embodiment of the present application;

[0045] Figure 9 A fifth flow chart of a communication method provided in an embodiment of the present application;

[0046] Figure 10 This is one of the schematic diagrams of the composition of a communication device provided in an embodiment of the present application;

[0047] Figure 11 This is a second schematic diagram of the composition of a communication device provided in an embodiment of the present application;

[0048] Figure 12 This is a third schematic diagram of the composition of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. In order to facilitate the clear description of the technical solutions in the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit differences. At the same time, in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0050] In addition, the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0051] In order to facilitate understanding of this application, the relevant technologies involved in this application are now described.

[0052] A reference signal (RS), also known as a pilot signal, is a known signal provided by the transmitter to the receiver for channel estimation or channel exploration. In mobile communications, common reference signals include the cell-specific reference signal (CRS) and the channel state information reference signal (CRI-RS). Each reference signal has a specific purpose, and the time-frequency location and content of each reference signal have corresponding generation rules.

[0053] Taking CRS as an example, the CRS of a cell is valid for all terminal devices in the cell. The functions of CRS include: (1) performing channel estimation on the physical downlink shared channel (PDSCH); (2) enabling terminal devices to obtain channel state information (CSI); and (3) terminal measurements based on CRS can be used to assist in cell selection and handover.

[0054] The communication method provided in the embodiments of the present application can be applied to various communication systems, for example, a communication system using 5GNR technology, LTE technology or other wireless access technology.

[0055] For example, Figure 1 A schematic diagram of a network architecture provided in an embodiment of the present application. The network may include: a terminal device, a radio access network (RAN) or an access network (AN) (RAN and AN are collectively referred to as (R)AN), and a core network (CN).

[0056] Among them, the terminal device can be a device with wireless transceiver capabilities. The terminal device can have different names, such as user equipment (UE), access device, terminal unit, terminal station, mobile station, mobile station, remote station, remote terminal, mobile device, wireless communication device, terminal agent, or terminal device. The terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on the water (such as ships); it can also be deployed in the air (such as airplanes, balloons, and satellites). The terminal device includes a handheld device, vehicle-mounted device, wearable device, or computing device with wireless communication capabilities. For example, the terminal device can be a mobile phone, tablet computer, or computer with wireless transceiver capabilities. The terminal device can also be a virtual reality (VR) device, augmented reality (AR) device, industrial control terminal, wireless terminal, wireless terminal used in unmanned driving, wireless terminal used in telemedicine, wireless terminal used in smart grids, wireless terminal used in smart cities, wireless terminal used in smart homes, etc. In the embodiments of the present application, the device for implementing the function of the terminal device can be the terminal device, or a device that can support the terminal device to implement the function, such as a chip system, etc. In the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0057] (R)AN mainly includes access network equipment. Access network equipment can also be called base station. Base stations can include various forms of base stations. For example: macro base station, micro base station (also known as small station), relay station, access point, etc. Specifically, it can be: an access point (AP) in a wireless local area network (WLAN), a base station (Base Transceiver Station, BTS) in a global system for mobile communications (GSM) or code division multiple access (CDMA), a base station (NodeB, NB) in wideband code division multiple access (WCDMA), an evolved Node B (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, wearable device, and the next generation Node B (gNB) in a 5G network, or a base station in a future evolved public land mobile network (PLMN) network, etc.

[0058] A base station typically consists of a baseband unit (BBU), a remote radio unit (RRU), an antenna, and the feeder cables connecting the RRU and antenna. The BBU is responsible for signal modulation. The RRU is responsible for RF processing. The antenna converts the guided waves on the cable into airborne waves. Distributed base stations significantly shorten the feeder cable between the RRU and antenna, reducing signal loss and lowering feeder costs. Furthermore, the RRU and antenna are relatively compact and can be installed anywhere, making network planning more flexible. In addition to remote RRUs, all BBUs can be centralized and placed in a central office (CO). This centralized approach significantly reduces the number of base station equipment rooms, supporting equipment, and energy consumption, particularly air conditioning, significantly reducing carbon emissions. Furthermore, by centralizing distributed BBUs into a BBU baseband pool, unified management and scheduling are possible, making resource allocation more flexible. In this model, all physical base stations become virtual base stations. All virtual base stations share user data transmission and reception, channel quality and other information in the BBU baseband pool, and cooperate with each other to achieve joint scheduling. In some deployments, the base station may include a centralized unit (CU) and a distributed unit (DU). The base station may also include an active antenna unit (AAU). The CU implements some functions of the base station, and the DU implements some functions of the base station. For example, the CU is responsible for processing non-real-time protocols and services, and implements the functions of the radio resource control (RRC) and packet data convergence protocol (PDCP) layers. The DU is responsible for processing physical layer protocols and real-time services, and implements the functions of the radio link control (RLC), media access control (MAC) and physical (PHY) layers. The AAU implements some physical layer processing functions, RF processing and related functions of the active antenna. Because RRC layer information ultimately becomes PHY layer information, or is converted from PHY layer information, in this architecture, higher-layer signaling, such as RRC layer signaling or PDCP layer signaling, can also be considered to be sent by the DU, or by the DU+AAU. It is understood that in the embodiments of the present application, the access network device can be a device including one or more of a CU node, a DU node, and an AAU node.In addition, the CU may be classified as a network device in the RAN, or may be classified as a network device in the core network (CN), which is not limited here.

[0059] The core network includes multiple core network elements (or network function elements), such as Figure 1 In the fifth-generation mobile communication technology (5th-Generation, 5G) system, the core network includes: AMF network element, session management function (session management function, SMF) network element, PCF network element, user plane function (user plane function, UPF) network element, application layer function (application function) network element, AUSF network element, and UDM network element.

[0060] In addition, the core network can also include some Figure 1 The network elements not shown in the figure, such as the security anchor function (SEAF) network element and the authentication credential repository and processing function (ARPF), are not described in detail in the embodiment of the present application.

[0061] like Figure 2 FIG2 is a schematic diagram of a communication system provided in an embodiment of the present application, wherein the communication system at least includes a first system using a first wireless access technology and a second system using a second wireless access technology.

[0062] The first wireless access technology and the second wireless access technology are different technologies such as LTE technology and 5G NR technology. In addition, the wireless access technology described in this application may be a new wireless access technology that has emerged with the development of wireless communication technology, and this application is not limited thereto.

[0063] A first system using a first radio access technology includes a network device 101 and a terminal device 102. Terminal device 102 can communicate with network device 101 within area a covered by a first cell corresponding to network device 101. Furthermore, a second system using a second radio access technology includes a network device 103 and a terminal device 104. Terminal device 104 can communicate with network device 103 within area b covered by a second cell corresponding to network device 103.

[0064] Among them, the network device 101 can be Figure 2For example, network device 101 may be an access network device in the (R)AN of the 5G NR system. Network device 103 may be an access network device in the (R)AN of a communication system that uses a different radio access technology from the first system. For example, network device 103 may be an access network device in an LTE system, a WCDMA system, a GSM system, or a CDMA system.

[0065] It should be noted that the above Figure 2 The illustrated example uses the example of non-co-sited network devices in systems employing different wireless access technologies. In other embodiments, the network devices in the first system and the second system may also be co-sited. That is, the communication system may include only one network device that can provide access services not only to terminal devices in the first system employing the first wireless access technology, but also to terminal devices in the second system employing the second wireless access technology. The following examples describe this embodiment in detail, using the example of non-co-sited access network devices in systems employing different wireless access technologies.

[0066] exist Figure 2 In the case where the coverage areas of the first cell and the second cell overlap (the overlapping area is as follows Figure 2 When the first cell and the second cell share frequency band resources, terminal device 102 may be interfered with by reference signals in the second system when receiving downlink signals from the first system in area c. For example, when the first system is a 5G NR system and the second system is an LTE system, terminal device 102 may be interfered with by reference signals such as cell-specific reference signals and channel state information reference signals from network device 103 in the LTE system.

[0067] In order to solve the problem that when receiving downlink signals from network equipment, the terminal device will be interfered with by the reference signal from the neighboring cell in the same frequency band, a method for eliminating interference of the terminal device in the NR system is proposed in the related art. In this method, the LTE terminal device obtains the broadcast information, synchronization signal and other contents of the neighboring cell, obtains the parameter configuration of the reference signal of the neighboring cell, and then reconstructs the reference signal of the neighboring cell. The NR terminal device then suppresses the interference of the neighboring cell reference signal in the downlink signal of the received serving cell by means of interference cancellation, thereby improving the performance of downlink transmission.

[0068] For example, NR terminal devices obtain the synchronization information of neighboring cells through synchronization signals, and then obtain the frame number and subframe number of CRS. NR terminal devices obtain the number of antenna ports in neighboring cells by reading the broadcast information of neighboring cells. NR terminal devices obtain the configuration information of neighboring cells such as Multicast Broadcast Single Frequency Network (MBSFN) by reading the broadcast information of neighboring cells, and obtain the subframe number of MBSFN subframes. Then, LTE terminal devices can reconstruct the CRS of neighboring cells through the above parameter configuration, and then achieve interference suppression through interference cancellation.

[0069] Although the above method can suppress and eliminate the interference of neighboring cell reference signals in the NR system, when the interference comes from a communication system of a different standard, for example, when the interference comes from the LTE system, it is difficult for the terminal device to directly obtain the broadcast information and synchronization signal of the neighboring cell. Therefore, it is impossible to obtain the parameter configuration of the relevant reference signal through the above method, and thus it is impossible to complete the interference suppression.

[0070] by Figure 2 Taking the communication system shown as an example, since the terminal device 102 cannot directly obtain the broadcast information and synchronization signal sent by the network device 103, it cannot obtain the parameter configuration of the reference signal, so interference suppression cannot be performed.

[0071] To address the above technical issues, in an embodiment of the present application, the network device 101 may first obtain the parameter configuration of the reference signal of the second cell corresponding to the network device 103 (including parameters for indicating the time-frequency position of the reference signal and signal sequence generation); the network device 101 then sends the parameter configuration to the terminal device 102. In this way, the terminal device 102 can use these parameter configurations to reconstruct the reference signal of the second cell and then achieve interference suppression.

[0072] The following combination Figure 2 The communication system shown in FIG. 1 introduces the communication method provided in the embodiment of the present application. Figure 3 As shown, the method may include the following contents of S201-S202:

[0073] S201 . The network device 101 of the first system sends first information to the terminal device 102 .

[0074] The first information is used to indicate the parameter configuration of the reference signal of the second system. The reference signal parameter configuration may include: time-frequency position indication information of the reference signal and reference signal generation parameter indication information. The time-frequency position indication information is used to indicate the time domain position and frequency domain position of the reference signal. The reference signal generation parameter indication information is used to indicate the sequence content of the reference signal.

[0075] In one embodiment, the first system and the second system referred to in this application can be understood as two different radio access technologies. That is, the network equipment of the first system can be understood as a network equipment that uses a radio access technology (which can be referred to as the first radio access technology) to provide access services to terminal devices; the network equipment of the second system can be understood as a network equipment that uses another radio access technology (which can be referred to as the second radio access technology) to provide access services to terminal devices. Among them, the first radio access technology and the second radio access technology can be different technologies such as LTE technology and 5G NR technology. In addition, the radio access technology described in this application can be a new radio access technology that has emerged with the development of wireless communication technology, and this application is not limited. In addition, the reference signal of the second system can be understood as the reference signal used when the network equipment uses the second radio access technology to provide access services to terminal devices. For example, when the first radio access technology is 5G NR technology and the second radio access technology is LTE technology, the reference signal of the second system may include CRS, CRI-RS or demodulation reference signal (DMRS) adopted by the LTE cell.

[0076] Considering that different cells in a communication system usually correspond to different reference signals, the terminal device 102 may be interfered by a reference signal from a cell of the second system, or may be interfered by reference signals from multiple cells of the second system at the same time. Figure 2 In the example, the terminal device 102 is interfered by the second cell C1 in the second system. Figure 4 In the embodiment of the present invention, when the terminal device 102 is located in the overlapping area of ​​the first cell (i.e., the cell corresponding to the network device 101 in the first system), the second cell C1 (the cell corresponding to the network device 103 in the second system), and the second cell C2 (the cell corresponding to the network device 105 in the second system), the terminal device 102 may be interfered with by the reference signals of the second cell C1 and the second cell C2 at the same time. Therefore, the parameter configuration of the reference signal of the second system can be used to indicate the parameter configuration of the reference signal of one or more second cells in the second system.

[0077] In addition, when the network device 101 is an access network device, the network device 101 can obtain the parameter configuration of the reference signal of another communication system (i.e., the second system) other than the first system by accessing an operation administration and maintenance (OAM) network element or a higher-level management network element. Regarding the specific method for the network device 101 to obtain the parameter configuration of the reference signal of the second system, reference can be made to the relevant content in the prior art and will not be repeated in this application.

[0078] In another embodiment, the first system and the second system may also be two access network subsystems in a communication system that adopts the same radio access technology. Taking the 5G NR system as an example, the first system includes network equipment of cell A in the 5G NR system and terminal equipment accessing cell A, and the second system includes network equipment of cell B in the 5G NR system and terminal equipment accessing cell B.

[0079] When the first system and the second system are two subsystems in a communication system that adopts the same wireless access technology, in this embodiment, since the terminal device can determine the parameter configuration of the reference signal of the second system through the first information, such as the reference signal of cell A in the 5GNR system, the terminal device can suppress the interference of the reference signal of the second system on the received signal of the first system according to the parameter configuration. For example, the terminal device can suppress the interference of the reference signal of cell A in the 5G NR system on the received signal of cell B in the 5G NR system according to the parameter configuration.

[0080] The following embodiment describes this embodiment in detail by taking the first system and the second system using different wireless access technologies as an example. It should be noted that in some embodiments, as described above, the first system and the second system may also be two subsystems in a communication system using the same wireless access technology, and this application is not limited to this.

[0081] In one example, the reference signal of the second system may be the CRS of the second cell in the second system. Furthermore, the parameter configuration may specifically include one or more of the following parameters: the primary cell ID (PCI) of the second cell in the second system, the subframe number offset value corresponding to the CRS of the second cell, the number of antenna ports of the second cell, the system bandwidth of the second cell, and the type of cyclic prefix of the second cell. Through the above implementation, the terminal device 102 can use the parameters included in the parameter configuration to determine the time-frequency position of the CRS of the second cell and the content of the CRS sequence, so as to reduce or eliminate the interference of the CRS of the second cell on the received signal of the first system by reconstructing the CRS of the second cell.

[0082] The subframe number offset value may specifically include the CRS slot number and the symbol number within the slot in the subframe. The system bandwidth may include one of six values: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz, corresponding to a maximum number of physical RBs (PRBs) of 6, 15, 25, 50, 75, and 100, respectively.

[0083] In addition, considering that the range of PRBs may be different in communication systems using different radio access technologies, for example, the scheduled bandwidth size and the starting position of the resource block may be different. Therefore, in order to ensure that the terminal device 102 can determine the position of the CRS of the second cell in the second system, the above parameter configuration may further include: a center subcarrier position.

[0084] For example, in a specific implementation, the first information may include the target subcarrier number. After receiving the first information, the terminal device 102 uses an offset function to increase the target subcarrier number based on the current subcarrier starting position to determine the center subcarrier position in the second system.

[0085] In addition, considering that there is no CRS in the MBSFN subframe, interference suppression of the CRS may not be required at the time-frequency position corresponding to the MBSFN subframe. Therefore, the above parameter configuration may also include: the time-frequency position of the multicast / multicast single frequency network MBSFN subframe of the second cell.

[0086] In another example, the reference signal of the second system may be a DMRS of a second cell in the second system. Furthermore, the parameter configuration may specifically include one or more of the following parameters: a scrambling ID of the DMRS of the second cell, a slot position of the DMRS in a frame, a time domain symbol position in the slot, a code division multiplexing (CDM) grouping type of the second cell, a physical cell ID of the second cell, a DMRS sequence initialization value {0 / 1}; a frequency domain starting position of a PRB scheduled in the second cell, and the number of PRBs scheduled in the second cell.

[0087] S202 , the terminal device 102 receives first information from the network device 101 .

[0088] Since the first information indicates the parameter configuration of the reference signal of the second system, the terminal device 102 can use the parameter configuration of the reference signal indicated by the first information to reduce the interference of the reference signal on the received signal of the first system.

[0089] Therefore, in one implementation, the method may further include:

[0090] S203. The terminal device 102 reduces interference of the reference signal of the second system on the received signal of the first system according to the parameter configuration of the reference signal of the second system indicated by the first information.

[0091] After obtaining the first information, the terminal device 102 can obtain the reference signal of the second system by reconstructing the reference signal of the second system according to the parameter configuration indicated by the first information. Interference control is then performed on the reference signal of the second system. For example, interference reduction can be used to reduce interference from the reference signal of the second system from the received signal, thereby suppressing interference and obtaining the received signal from the first system.

[0092] In an example, the following describes a detailed process of performing interference suppression on the terminal device 102 by taking the signal causing interference to the terminal device 102 as the CRS of the second cell in the second system as an example:

[0093] Step 1: The terminal device 102 can determine the content of the CRS sequence carried by the CRS of the second cell based on the parameter configuration indicated by the first information (including the PCI of the second cell, the subframe number offset value corresponding to the CRS of the second cell, the system bandwidth and the type of cyclic prefix).

[0094] Specifically, the CRS sequence carried in the CRS is composed of a series of reference symbols, where each reference symbol occupies a resource element (RE). The sequence is generated as shown in Formula 1:

[0095]

[0096] Among them, n s Indicates the slot number in the frame where the CRS reference symbol is located, l indicates the symbol number in the slot, Indicates subframe n s The value of the CRS reference symbol in symbol l. In addition, Indicates the maximum number of physical RBs scheduled for downlink in this cell ( can be derived from the system bandwidth).

[0097] In addition, in Formula 1, c is a pseudo-random sequence, which is defined using a set of Gold sequences with a length of 31. The output length of sequence c is expressed as M PN When n=0,1,...,M PN When -1, the value of sequence c satisfies the following conditions:

[0098] c(n)=(x1(n+3)+x2(n+N c ))mod2

[0099] x1(n+31)=(x1(n+3)+x1(n))mod2

[0100] x2(n+31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod2.

[0101] Among them, N c =1600, the initial value of sequence x1 is: The initial value of the sequence x2 is expressed as: in, Indicates the primary cell number of the current cell, ranging from 0 to 503. cp Indicates the type of cyclic prefix of the cell. When the cyclic prefix adopts the normal cyclic prefix (normal CP), N cp =1; when the cyclic prefix uses the extended cyclic prefix (extendedCP), N cp =0.

[0102] Therefore, based on the PCI of the second cell, the subframe number offset value corresponding to the CRS of the second cell, the system bandwidth and the type of cyclic prefix, the content of each reference symbol in the CRS sequence carried by the CRS of the second cell can be obtained.

[0103] Step 2: Based on the number of antenna ports of the second cell, PCI, center subcarrier position, and time-frequency position of the MBSFN subframe, the time-frequency position of the CRS can also be determined. For example, Figure 5 Figure 2 shows a schematic diagram of the subframe structure after CRS is mapped to REs on the subframe. The CRSs for antenna ports 0 and 1 occupy 4 REs in each slot (in this example, a slot contains 7 time domain symbols) and 8 REs in a slotpair. When supporting more than three antenna ports, to avoid excessive CRS overhead, the number of REs occupied by the CRSs for antenna ports 2 and 3 is reduced, that is, the CRSs for antenna ports 2 and 3 occupy 2 REs in each slot.

[0104] Step 3: After determining the content and time-frequency location of the CRS of the second cell, the terminal device 102 can reconstruct the CRS of the second cell. Then, using interference cancellation, the CRS of the second cell is suppressed when receiving the signal from the first system, thereby achieving the effect of suppressing interference with the signal from the first system.

[0105] In another example, the following describes a detailed process of performing interference suppression on the terminal device 102 by taking the DMRS of the second cell in the second system as an example in which the signal causing interference to the terminal device 102 is:

[0106] Step 1: The terminal device 102 can determine the content of the DMRS sequence carried by the DMRS of the second cell according to the parameter configuration indicated by the first information.

[0107] Specifically, the DMRS sequence carried in the DMRS is composed of a series of reference symbols, where each reference symbol occupies one RE. The sequence is generated as shown in Formula 2:

[0108]

[0109] Here, r(n) represents the value of the DMRS reference symbol in the nth PRB.

[0110] Where r(n) in Formula 2 is a pseudo-random sequence, and the sequence r(n) is initialized by the following Formula 3:

[0111]

[0112] Where l is the number of symbols in the slot (which can be determined by the time domain symbol position in the slot), The number of time slots in a frame (determined by the slot position of the DMRS in a frame).

[0113] In addition, if PDSCH is scheduled by DCI format 1_1 or 1_2 and scrambled by C-RNTI, MCS-C-RNTI or CS-RNTI, the higher-layer parameters PDSCH-Config=>DMRS-DownlinkConfig=>scramblingID0 and scramblingID1 are configured. and and The value range is (0,1,...,65535);

[0114] If the PDSCH is scheduled by DCI format 1_0 and scrambled by C-RNTI, MCS-C-RNTI or CS-RNTI, then The value of is determined by the high-level parameter scramblingID0;

[0115] Without configuring high-level parameters, Physical cell ID configured as the serving cell;

[0116] It can be determined using the following formula 4:

[0117]

[0118] λ can be determined by the CDM group type; The value range is (0,1). If the PDSCH is scheduled by DCI format 1_1, the value is given by the DMRS sequence initialization field in the DCI. In other cases, the value is directly 0.

[0119] Step 2: Determine the time-frequency position of DMRS.

[0120] Step 3: After determining the content and time-frequency location of the DMRS of the second cell, the terminal device 102 can reconstruct the DMRS of the second cell. Then, using interference reduction, the DMRS of the second cell is suppressed when receiving signals from the first system, thereby achieving interference reduction for signals from the first system.

[0121] In one implementation, to reduce the occupancy of air interface resources, in an embodiment of the present application, the terminal device 102 may further detect the channel quality of downlink transmission in the network environment in which it is located. When the terminal device 102 determines that the quality of the channel currently receiving the downlink signal is poor, the terminal device 102 sends information (hereinafter referred to as the second information) to the network device 101 to instruct the network device 101 to send the above-mentioned first information. After receiving the second information, the network device 101 may send the above-mentioned first information to the terminal device 102. If the second information is not received, the network device 101 does not need to send the first information to the terminal device 102, thereby reducing the occupancy of air interface resources.

[0122] Therefore, if Figure 6 As shown, in the above embodiment of the present application, before S201, the method may further include:

[0123] S204. The terminal device 102 obtains the downlink channel quality of the terminal device 102.

[0124] The downlink channel quality may be the channel quality of various downlink signals sent by the network side device (including but not limited to the network device 101) received by the terminal device.

[0125] Exemplarily, step S204 may specifically include: the terminal device 102 obtaining a received signal signal-to-noise ratio (SNR), signal to interference plus noise ratio (SINR), or reference signal received power (RSRP) and other parameters. For example, the terminal device 102 may measure based on a terminal device-specific (UE-specific) CSI-RS to obtain the RSRP or SINR.

[0126] S205 . When the downlink signal quality is lower than a preset threshold, the terminal device 102 sends second information to the network device 101 .

[0127] The second information is used to instruct the terminal device 102 to require the network device to send the first information. In other words, it can also be understood that the second information is used to request the network device 101 to send the first information to the terminal device 102.

[0128] Continuing with the above example, when the current RSRP, SNR, or SINR obtained by terminal device 102 is high, it indicates that the current channel quality of terminal device 102 is relatively good, which can ensure good signal estimation accuracy and correct data demodulation performance. This also means that the interference of the second system reference signal has little impact on the performance of terminal device 102. Therefore, terminal device 102 does not need to send the second information to network device 101. Network device 101 also does not need to send the first information to terminal device 102.

[0129] When the current RSRP, SNR, or SINR obtained by terminal device 102 is low, this indicates that terminal device 102 may be subject to strong interference from the reference signal of the second system. Furthermore, terminal device 102 sends second information to network device 101, causing network device 101 to send first information to terminal device 102 after receiving the second information, thereby performing interference suppression according to the above-mentioned S203.

[0130] It should be noted that after receiving the second information, network device 101 can determine whether to send the first information to terminal device 102 based on its own resource usage. In other words, the role of the second information can be understood as the terminal device notifying network device 101 that terminal device 102 needs to suppress interference, and after network device 101 receives the second information, it does not necessarily trigger the action of sending the first information to terminal device 102. Whether to trigger the action of sending the first information to terminal device 102 can be determined by network device 101 based on information such as its own resource usage.

[0131] In one example, the second information may include parameters for characterizing the channel quality of the terminal device 102. For example, the second information may include one or more of the RSRP, SNR, or SINR of the terminal device 102. Furthermore, after receiving the second information, the network device 101 determines the relationship between the RSRP, SNR, or SINR of the terminal device 102 and a preset threshold value. When the RSRP, SNR, or SINR of the terminal device 102 is less than the preset threshold value, it determines that the terminal device 102 requires the network device 101 to send the first information, thereby triggering the network device 101 to send the first information to the terminal device 102.

[0132] In another example, the second information may be a preset identifier. The preset identifier is used to indicate that the current channel quality of the terminal device 102 is lower than a preset threshold value. For example, the above-mentioned preset identifier may be carried in the PUCCH or PUSCH and occupy 1 bit. For example, taking the preset identifier as 0 as an example, when the channel quality of the terminal device 102 is lower than the preset threshold value, the terminal device 102 sends "0" to the network device 101 through the above-mentioned PUCCH or PUSCH, and then after receiving the above-mentioned "0", the network device 101 determines that the terminal device 102 needs the network device 101 to send the first information, thereby triggering the network device 101 to send the first information to the terminal device 102.

[0133] That is, in the embodiment of the present application, when the channel quality is lower than the preset threshold, the terminal device 102 sends the second information to the network device 101 to trigger the network device 101 to send the first information to the terminal device 102. The specific content of the second information is not limited in the present application.

[0134] In one implementation, considering the scenario where the terminal device may be interfered with by the reference signals from multiple cells in the second system, since different terminal devices have different interference suppression capabilities, terminal devices with poor performance (such as weak computing power and long processing delay) can support fewer interference-suppressed cells; terminal devices with strong performance (such as strong computing power and short processing delay) can support more interference-suppressed cells. Therefore, when the terminal device 102 needs to perform interference suppression, the method of sending the number of interference-suppressed cells supported by the terminal device 102 to the network device 101 by the terminal device 102 can enable the network device 101 to send the parameter configuration of the reference signal that meets the above number of cells supported by the terminal device 102 in a targeted manner. Therefore, in the above method of the embodiment of the present application, if Figure 7 As shown, before S201, the method may further include:

[0135] S206 , the terminal device 102 sends third information to the network device 101 .

[0136] The third information is used to indicate the number of interference signals processed by the terminal device 102. The interference signal is a reference signal of the second system.

[0137] In one implementation, the number of interference signals processed by the terminal device 102 may refer to the maximum number of interference signals that the terminal device 102 can process. For example, the terminal device may determine, based on its processing capability, that the terminal device can reduce the maximum interference from N reference signals of the second system, i.e., the maximum number of interference signals that the terminal device can process is N. The terminal device then sends third information indicating the number N to the network device. In this way, the network device can determine that the terminal device can process a maximum of N interference signals, and thus send parameter configurations for the reference signals of the second system to the terminal device, the number of which matches the processing capability of the terminal device.

[0138] For example, in one example, the third information may be the maximum number of interference signals that the terminal device 102 can process. For example, when the maximum number of interference signals that the terminal device 102 can process is 1, the third information is "001". When the maximum number of interference signals that the terminal device 102 can process is 2, the third information is "010", and so on. In the specific implementation, the percentage of the third information can be determined according to actual needs. For example, the current mobile communication network mostly adopts a cellular network structure, so a terminal device may be interfered with by the reference signals of 6 neighboring cells. Because 6 neighboring cells can correspond to 6 reference signals, a 3-bit field can be used to carry the third information as in the above example. In other cases, more or fewer bits can be used to carry the third information, and this application may not impose any restrictions on this.

[0139] In another example, the third information may include performance parameters of the terminal device 102 (e.g., parameters regarding the computing capability of the terminal device 102). After receiving the performance parameters, the network device 101 may determine the maximum number of interference signals that the terminal device 102 can process based on the performance parameters.

[0140] In another implementation, the third information is specifically used to indicate the number of interference signals that the terminal device needs to process. For example, the terminal device can determine, based on information such as the channel quality of the current downlink channel, the number M of reference signals of the second system that interfere with the terminal device, i.e., determine that the number of interference signals that the terminal device needs to process is M. The terminal device then sends third information indicating this number M to the network device. This allows the network device to determine that the terminal device needs to process M interference signals and, accordingly, sends parameter configurations for the second system reference signals to the terminal device, a number that matches the number required by the terminal device.

[0141] By sending the third information to the network device, the network device can determine the number of reference signals of the second system indicated in the first information based on the number of interference signals indicated by the third information. For example, when the third information is used to indicate that the maximum number of interference signals that the terminal device can process is N, the network device can send first information indicating the parameter configuration of the reference signals of the N second systems to the terminal device based on the number of interference signals N indicated by the third information. It should be noted that after the network device determines the number N of interference signals indicated by the third information, the first information sent to the terminal device does not necessarily indicate the parameter configuration of the reference signals of the N second systems. In this case, the first information can also be used to indicate the parameter configuration of the reference signals of other numbers of second systems. For example, in some scenarios, the network device can send first information indicating the parameter configuration of more than N second systems to the terminal device, so that the terminal device selects appropriate N reference signals from the reference signals of more than N second systems and determines the parameter configuration of these N reference signals based on the first information to reduce the interference of these N reference signals on the received signal of the first system. Similarly, in other scenarios, the network device can send first information indicating the parameter configuration of less than N second systems to the terminal device. This application may not impose any restriction on the number of reference signals of the second system indicated in the first information sent by the network device to the terminal device after receiving the above-mentioned third information.

[0142] In another implementation, when the terminal device 102 has the ability to determine which cell the interference signal comes from, before the network device 101 sends the first information to the terminal device 102, the terminal device 102 may send the identifier of the second cell in the second system to the network device 101, so that the network device 101 determines which cells in the second system the reference signal that causes interference to the terminal device 102 belongs to. The network device 101 can then inform the terminal device 102 of the parameter configuration of the reference signal of the second cell by sending the first information.

[0143] For example, first, the terminal device 102 performs a preliminary analysis of the signal from the second system and is able to obtain the identifier of the cell that sends the signal (at this time, the terminal device 102 does not need to parse the signal from the second system to obtain the detailed parameters of the reference signal of the corresponding cell, such as time-frequency position, carried content, etc. The terminal device 102 only needs to be able to determine the identifier of the cell). Then, the terminal device 102 sends information indicating the identifier of the cell to the network device 101 (hereinafter referred to as "the fourth information"). The network device 101 can then determine which cells' reference signals interfere with the terminal device based on the fourth information, and then indicate the parameter configuration of the reference signals of these cells in the first information.

[0144] Therefore, if Figure 8 As shown, before S201, the method may further include:

[0145] S207 . The terminal device 102 sends fourth information to the network device 101 .

[0146] The fourth information is used to indicate the identifiers of one or more second cells whose reference signals in the second system interfere with the terminal device 102.

[0147] In one implementation, in the method provided in the embodiment of the present application, when the network device 101 sends the first information to the terminal device 102, the network device 101 may carry the first information in the RRC signaling and send it to the terminal device 102. Figure 9 The above S201 may specifically include:

[0148] S201a: The network device 101 sends a first RRC signaling to the terminal device 102. The first RRC signaling includes first information.

[0149] The above S202 may specifically include:

[0150] S202a, the terminal device 102 receives the first RRC signaling from the network device 101.

[0151] For example, taking the reference signal that interferes with the terminal device 102 as a CRS in the LTE system, considering that the CRS in the LTE system has a transmission period of 10ms. Therefore, the network device 101 can periodically send first information to the terminal device 102 every 10ms, where the first information is used to indicate the parameter configuration of the CRS. In this way, the terminal device 102 can determine the parameter configuration of the CRS based on the first information to perform interference suppression.

[0152] For another example, since the CRS does not change in every cycle, the network device 101 can send the first information to the terminal device only in the cycle in which the CRS changes, and does not necessarily send the first information every CRS change cycle (10ms). In this way, when the terminal device 102 does not receive the first information within a cycle, it can be determined that the parameter configuration of the CRS has not been sent and changed, and then the parameter configuration of the CRS indicated in the first information sent last time can be used to perform interference suppression.

[0153] Furthermore, in a possible design, in order to enable the network device 101 to more quickly control the terminal device 102 to perform interference suppression operations, a semi-static scheduling technology can be used to control the timing of the terminal device 102 activating the parameter configuration in the first information through DCI activation. Figure 9 As shown, before S203, the method provided in this application may further include:

[0154] S208. The network device 101 sends a first DCI to the terminal device.

[0155] The first DCI is used to indicate activation of the parameter configuration indicated by the first information.

[0156] For example, 1-bit indication information in the DCI may be used to indicate whether the terminal device 102 adopts the parameter configuration in the first information.

[0157] Similarly, the above parameter configuration can also be deactivated by means of DCI deactivation. For example, a fourth DCI can be sent by the network device 101 to the terminal device 102, where the fourth DCI is used to indicate the deactivation of the parameter configuration indicated by the first information, thereby causing the terminal device 102 to stop using the parameter configuration in the first information, no longer performing interference suppression, and saving energy consumption.

[0158] In another implementation, considering that the time delay consumed in parsing the information in the RRC signaling is relatively large (possibly up to the order of 100ms), in order to enable the terminal device 102 to obtain the content of the first information in a timely manner, the present application may also carry the first information in the DCI for transmission. Furthermore, the above S201 may specifically include:

[0159] S201b: The network device 101 sends a second DCI to the terminal device 102. The second DCI includes the first information.

[0160] The above S202 may specifically include:

[0161] S202b, the terminal device 102 receives the second DCI from the network device 101.

[0162] For example, the second DCI may include multiple fields, each of which is used to indicate a parameter of the CRS of the second cell that causes interference to the terminal device 102, such as: the number of one or more second cells, the PCI of each second cell, the subframe number offset value, the system bandwidth, the center subcarrier position, the type of cyclic prefix, and the time-frequency position of the MBSFN subframe in the second system.

[0163] Taking the number of one or more second cells and the number of antenna ports of each second cell as an example, the second DCI may include a first field and a second field. The first field is used to indicate the number of one or more second cells, and the second field is used to indicate the number of antenna ports of each second cell.

[0164] For example, Table 1 below shows two ways of taking values ​​for a first field:

[0165] Table 1

[0166] Number of second cells 1 2 3 4 5 6 Value method 1 000 001 010 011 100 101 Value method 2 001 010 011 100 101 110

[0167] The first field in value method 1 starts at "0", and the first field in value method 2 starts at "1". For example, if the parameter configuration indicated by the first information includes parameter configurations of the CRSs of two second cells, the value of the first field in the DCI is determined to be 001 according to value method 1; and the value of the first field in the DCI is determined to be 010 according to value method 2.

[0168] Table 2 below shows two ways of taking values ​​for the second field:

[0169] Table 2

[0170] Number of antenna ports 1 2 3 4 Value method 1 000 001 010 011 Value method 2 001 010 011 100

[0171] The second field in value method 1 starts at "0", and the second field in value method 2 starts at "1". For example, if one of the second cells in the parameter configuration indicated by the first information has two antenna ports, then the value of the second field corresponding to the second cell in the DCI is determined to be 001 according to value method 1, and the value of the second field corresponding to the second cell in the DCI is determined to be 010 according to value method 2.

[0172] It should be noted that the field used to carry the first information in the second DCI may be a newly added field by increasing the payload size of the DCI on the basis of the existing DCI. The first information may also be carried by utilizing the value of the redundant state of an existing field in the DCI. This application does not impose any restrictions on the manner in which the second DCI carries the first information.

[0173] In addition, in another implementation, considering that the resources occupied by DCI are limited, if DCI is used to transmit the first information, although the effect of quickly transmitting the first information can be achieved, it will occupy too many resources on DCI. Therefore, in order to avoid excessive occupation of DCI resources, in the embodiment of the present application, the parameter configuration indicated by the first information can also be divided into two parts. Among them, one part is indicated to the terminal device through RRC signaling, and the other part is indicated to the terminal device through DCI. Furthermore, in the above embodiment of the present application, S201 may specifically include:

[0174] S201c. The network device 101 sends a second RRC signaling and a third DCI to the terminal device 102.

[0175] The second RRC signaling includes information for indicating the first parameter configuration. The third DCI includes information for indicating the second parameter configuration.

[0176] The first parameter configuration may be information that occupies a large amount of overhead in the parameter configuration indicated by the first information; and the second parameter configuration may be information that occupies a small amount of overhead in the parameter configuration indicated by the first information.

[0177] For example, since the PCI value of a cell ranges from 0 to 503, at least 9 bits are required to represent the PCI of a cell. Therefore, the PCI can be used as an item in the first parameter configuration. For another example, the system bandwidth of a cell is usually divided into six values: 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz. In other words, only 3 bits are needed to represent the system bandwidth of a cell. Therefore, the system bandwidth can be used as an item in the second parameter configuration.

[0178] Alternatively, the first parameter configuration may be information with a slower changing frequency among the parameter configurations indicated by the first information; and the second parameter configuration may be information with a faster changing frequency among the parameter configurations indicated by the first information.

[0179] For example, compared to the system bandwidth of a cell, the PCI of a cell changes more slowly. Therefore, the PCI can be used as an item in the first parameter configuration, and the system bandwidth can be used as an item in the second parameter configuration.

[0180] Alternatively, the first parameter configuration and the second parameter configuration may be determined based on the occupancy overhead and change frequency of each information in the parameter configuration indicated by the first information. For example, a weighted sum of the occupancy overhead and change frequency of each information in the parameter configuration indicated by the first information may be performed, and then, based on the result of the weighted summation, each information in the parameter configuration indicated by the first information may be divided into the first parameter configuration and the second parameter configuration. In the embodiment of the present application, there is no limitation on the manner in which the first parameter configuration and the second parameter configuration are divided.

[0181] In the technical solution provided in the embodiments of the present application, a network device in the first system transmits first information indicating the parameter configuration of the reference signal of the second system to a terminal device, thereby enabling the terminal device to determine the parameter configuration of the reference signal of the second system. In this way, the terminal device can suppress interference caused by the reference signal of the second system when receiving signals from the first system by, for example, reconstructing the reference signal of the second system based on the parameter configuration of the reference signal of the second system.

[0182] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of interaction between devices. It should be understood that in order to realize the corresponding functions, the above-mentioned terminal equipment or network equipment includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily appreciate that, in combination with the units of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0183] The embodiment of the present application can divide the functional modules of the device (including terminal devices and network devices) according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. Optionally, the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0184] like Figure 10 FIG2 is a schematic diagram of a communication device 30 provided in an embodiment of the present application. The communication device 30 may be a chip or system-on-chip in a terminal device. The communication device 30 may be used to perform the functions of the terminal device 102 involved in the above embodiment. As an implementation method, the communication device 30 includes: a receiving unit 301. Among them:

[0185] The receiving unit 301 is used to perform the following Figure 3 For example, the receiving unit 301 may receive first information from a first system. The first information is used to indicate a parameter configuration of a reference signal of a second system. The first system uses a first radio access technology, and the second system uses a second radio access technology, where the first radio access technology is different from the second radio access technology.

[0186] The parameter configuration of the reference signal of the second system is used to reduce interference of the reference signal on the received signal of the first system. Therefore, in one possible design, the communication device 30 further includes an interference cancellation unit 302. The interference cancellation unit 302 is configured to reduce interference of the reference signal on the received signal of the first system based on the parameter configuration of the reference signal of the second system.

[0187] In one possible design, the communication device 30 also includes: a sending unit 303.

[0188] The sending unit 303 is used to send second information to the network device 101 when the downlink channel quality is lower than a preset threshold value; the second information is used to indicate to the network device 101 that the terminal device 102 requires the network device 101 to send the first information.

[0189] In one possible design, the sending unit 303 is used to send third information to the network device 101, where the third information is used to indicate the number of interference signals processed by the terminal device, and the interference signal is a reference signal of the second system.

[0190] In one possible design, the receiving unit 301 is specifically used to receive a first RRC signaling from the network device 101 of the first system, where the first RRC signaling includes the first information.

[0191] In one possible design, the receiving unit 301 is further used to receive a first DCI from the network device 101, where the first DCI is used to indicate activation of the parameter configuration.

[0192] In one possible design, the receiving unit 301 is specifically used to receive a second DCI from the network device 101 of the first system, where the second DCI includes the first information.

[0193] In one possible design, the parameter configuration includes a first parameter configuration and a second parameter configuration.

[0194] The receiving unit 301 is specifically configured to receive second RRC signaling and third DCI from the network device 101 of the first system, where the second RRC signaling includes information indicating the first parameter configuration; and the third DCI includes information indicating the second parameter configuration.

[0195] In one possible design, the parameter configuration includes time-frequency position indication information of the reference signal and indication information of reference signal generation parameters.

[0196] Among them, the parameter configuration may specifically include one or more of the following parameters: the physical cell identifier PCI of the second cell in the second system, the subframe number offset value corresponding to the cell-specific reference signal CRS, the number of antenna ports, the system bandwidth, the center subcarrier position, the type of cyclic prefix, and the time-frequency position of the multicast / multicast single frequency network MBSFN subframe.

[0197] In one possible design, the first wireless access technology is LTE technology; the second wireless access technology is 5GNR technology.

[0198] like Figure 11 FIG. 4 is a schematic diagram of a communication device 40 provided in an embodiment of the present application. The communication device 40 may be a chip or system-on-chip in a network device. The communication device 40 may be used to perform the functions of the network device 101 involved in the above embodiment. As an implementation method, the communication device 40 includes: a sending unit 401. Among them:

[0199] The sending unit 401 is used to send first information to the terminal device 102; the first information is used to indicate the parameter configuration of the reference signal of the second system; the first system adopts a first wireless access technology, the second system adopts a second wireless access technology, and the first wireless access technology is different from the second wireless access technology.

[0200] In one possible design, the communication device 40 also includes: a receiving unit 402.

[0201] The receiving unit 402 is used to receive second information from the terminal device 102; the second information is used to indicate to the network device 101 that the terminal device 102 requires the network device to send the first information.

[0202] In one possible design, the communication device 40 also includes: a receiving unit 402.

[0203] The receiving unit 402 is configured to receive third information from the terminal device 102 ; the third information is used to indicate the number of interference signals processed by the terminal device 102 , where the interference signal is a reference signal of the second system.

[0204] In one possible design, the sending unit 401 is specifically used to send a first RRC signaling to the terminal device 102; the first RRC signaling includes the first information.

[0205] In one possible design, the sending unit 401 is also used to send a first DCI to the terminal device 102; the first DCI is used to indicate the activation of the parameter configuration.

[0206] In one possible design, the sending unit 401 is specifically used to send a second DCI to the terminal device 102; the second DCI includes the first information.

[0207] In one possible design, the parameter configuration includes a first parameter configuration and a second parameter configuration;

[0208] The sending unit 401 is specifically used to send a second RRC signaling and a third DCI to the terminal device 102; the second RRC signaling includes information for indicating the first parameter configuration; the third DCI includes information for indicating the second parameter configuration.

[0209] In one possible design, the parameter configuration includes time-frequency position indication information of the reference signal and indication information of reference signal generation parameters.

[0210] Among them, the parameter configuration may specifically include one or more of the following parameters: the physical cell identifier PCI of the second cell in the second system, the subframe number offset value corresponding to the cell-specific reference signal CRS, the number of antenna ports, the system bandwidth, the center subcarrier position, the type of cyclic prefix, and the time-frequency position of the multicast / multicast single frequency network MBSFN subframe.

[0211] In one possible design, the first wireless access technology is LTE technology; the second wireless access technology is 5GNR technology.

[0212] like Figure 12 FIG1 shows a schematic diagram of the composition of a communication device 50. The communication device 50 includes: one or more processors 501 and one or more memories 502. The one or more processors 501 are coupled to the one or more memories 502, and the memories 502 are used to store computer-executable instructions. For example, in some embodiments, when the processor 501 executes the instructions stored in the memory 502, the communication device 50 performs the following operations: Figure 3 In other embodiments, when the processor 501 executes the instructions stored in the memory 502, the communication device 50 performs the following operations: Figure 3 S201 shown, and other operations that the network device 101 needs to perform.

[0213] The communication device 50 may further include a communication bus 503 and at least one communication interface 504 .

[0214] The processor 501 may be a central processing unit (CPU), a microprocessor unit, an ASIC, or one or more integrated circuits for controlling the execution of the program of the disclosed solution.

[0215] The communication bus 503 may include a pathway for transmitting information between the aforementioned components.

[0216] The communication interface 504 uses any transceiver or other device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.

[0217] The memory 502 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, an optical disc storage (including a compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory may exist independently and be connected to the processing unit via a bus. The memory may also be integrated with the processing unit.

[0218] The memory 502 is used to store instructions for executing the solution of the present disclosure, and the execution is controlled by the processor 501. The processor 501 is used to execute the instructions stored in the memory 502, thereby realizing the functions of the method of the present disclosure.

[0219] In a specific implementation, as an embodiment, the processor 501 may include one or more CPUs, such as Figure 9 CPU0 and CPU1 in.

[0220] In a specific implementation, as an embodiment, the communication device 50 may include multiple processors, such as Figure 9 1 and 507. Each of these processors may be a single-CPU processor or a multi-CPU processor. A processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0221] In a specific implementation, as an embodiment, the communication device 50 may further include an output device 505 and an input device 506. The output device 505 communicates with the processor 501 and can display information in a variety of ways. For example, the output device 505 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. The input device 506 communicates with the processor 501 and can receive user input in a variety of ways. For example, the input device 506 can be a mouse, a keyboard, a touch screen device, or a sensor device.

[0222] An embodiment of the present application also provides a computer-readable storage medium, which stores instructions. When the instructions are executed, the method provided in the embodiment of the present application is executed.

[0223] The present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method provided in the present application.

[0224] In addition, embodiments of the present application further provide a chip. The chip includes a processor. When the processor executes computer program instructions, the chip can perform the methods provided in embodiments of the present application. The instructions can come from a memory within the chip or from a memory external to the chip. Optionally, the chip also includes input and output circuits serving as a communication interface.

[0225] The functions, actions, operations, steps, etc. in the above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, they can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer 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. 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 can be integrated with the medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0226] Although the present application has been described with reference to specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely illustrative of the present application as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, the present application is intended to include such modifications and variations as fall within the scope of the claims of the present application and their equivalents.

Claims

1. A communication method, characterized in that: include: The terminal device receives first information from the network device of the first system; The first information is used to indicate parameter configuration of a reference signal of the second system; The first system adopts Long Term Evolution (LTE) technology, and the second system adopts 5G New Radio (5G NR) technology; Reconstructing, by the terminal device, a reference signal of the second system according to the first information; The terminal device receives the signal from the first system and reduces the interference of the reference signal of the second system through interference cancellation.

2. The method according to claim 1, characterized in that The method further comprises: When the downlink channel quality is lower than a preset threshold, the terminal device sends second information to the network device; the second information is used to indicate to the network device that the terminal device requires the network device to send the first information.

3. The method according to claim 1 or 2, characterized in that The method further comprises: The terminal device sends third information to the network device, where the third information is used to indicate the number of interference signals processed by the terminal device, and the interference signal is a reference signal of the second system.

4. The method according to claim 1 or 2, characterized in that The terminal device receives first information from a network device of the first system, including: The terminal device receives a first radio resource control RRC signaling from the network device of the first system, where the first RRC signaling includes the first information. The method also includes: the terminal device receives a first downlink control information DCI from the network device, where the first DCI is used to indicate activation of the parameter configuration.

5. The method according to claim 1 or 2, characterized in that The terminal device receives first information from a network device of the first system, including: The terminal device receives a second DCI from the network device of the first system, where the second DCI includes the first information.

6. The method according to claim 1 or 2, characterized in that The parameter configuration includes a first parameter configuration and a second parameter configuration; The terminal device receives first information from a network device of the first system, including: The terminal device receives second RRC signaling and third DCI from the network device of the first system, where the second RRC signaling includes information for indicating the first parameter configuration; and the third DCI includes information for indicating the second parameter configuration.

7. The method according to claim 1 or 2, characterized in that The parameter configuration includes time-frequency position indication information of the reference signal and indication information of reference signal generation parameters.

8. A communication method, characterized in that: include: The network device of the first system sends first information to the terminal device; The first information is used to indicate the parameter configuration of the reference signal of the second system; the first system adopts Long Term Evolution LTE technology, and the second system adopts 5G New Radio 5GNR technology. The first information is used by the terminal device to reconstruct the reference signal of the second system, and the reference signal of the second system is used to reduce interference of the reference signal of the second system through interference elimination when the network equipment of the first system sends a signal to the terminal device.

9. The method according to claim 8, characterized in that The method further comprises: The network device receives second information from the terminal device; the second information is used to indicate to the network device that the terminal device requires the network device to send the first information.

10. The method according to claim 8 or 9, characterized in that The method further comprises: The network device receives third information from the terminal device; the third information is used to indicate the number of interference signals processed by the terminal device, and the interference signal is a reference signal of the second system.

11. The method according to claim 8 or 9, characterized in that The network device of the first system sends first information to the terminal device, including: The network device of the first system sends a first radio resource control RRC signaling to the terminal device; the first RRC signaling includes the first information; and the method further includes: The network device sends first downlink control information DCI to the terminal device; the first DCI is used to indicate activation of the parameter configuration.

12. The method according to claim 8 or 9, characterized in that The network device of the first system sends first information to the terminal device, including: The network device of the first system sends a second DCI to the terminal device; the second DCI includes the first information.

13. The method according to claim 8 or 9, characterized in that The parameter configuration includes a first parameter configuration and a second parameter configuration; The network device of the first system sends first information to the terminal device, including: The network device of the first system sends a second RRC signaling and a third DCI to the terminal device; the second RRC signaling includes information for indicating the first parameter configuration; and the third DCI includes information for indicating the second parameter configuration.

14. The method according to claim 8 or 9, characterized in that The parameter configuration includes time-frequency position indication information of the reference signal and indication information of reference signal generation parameters.

15. A communication device, characterized in that: include: A receiving unit, configured to receive first information from a network device of a first system; wherein the first information is used to indicate a parameter configuration of a reference signal of a second system; the first system adopts Long Term Evolution (LTE) technology, and the second system adopts 5G New Radio (5G NR) technology; a processing unit, configured to reconstruct a reference signal of the second system based on the first information; The receiving unit is further configured to receive a signal from the first system; The processing unit is further configured to reduce interference of a reference signal of the second system by performing interference cancellation.

16. The device according to claim 15, characterized in that Also includes: Sending unit; The sending unit is configured to send second information to the network device when the channel quality of the downlink signal of the communication device is lower than a preset threshold; The second information is used to indicate to the network device that the communication apparatus requires the network device to send the first information.

17. The device according to claim 15 or 16, characterized in that Also includes: Sending unit; The sending unit is configured to send third information to the network device, where the third information is used to indicate the number of interference signals processed by the communication apparatus, and the interference signal is a reference signal of the second system.

18. The device according to claim 15 or 16, characterized in that The receiving unit is specifically configured to receive a first radio resource control RRC signaling from the network device of the first system, where the first RRC signaling includes the first information; The receiving unit is further configured to receive first downlink control information DCI from the network device, where the first DCI is used to indicate activation of the parameter configuration.

19. The device according to claim 15 or 16, characterized in that The receiving unit is specifically configured to receive a second DCI from the network device of the first system, where the second DCI includes the first information.

20. The device according to claim 15 or 16, characterized in that The parameter configuration includes a first parameter configuration and a second parameter configuration; The receiving unit is specifically configured to receive second RRC signaling and third DCI from the network device of the first system, where the second RRC signaling includes information indicating the first parameter configuration; and the third DCI includes information indicating the second parameter configuration.

21. The device according to claim 15 or 16, characterized in that The parameter configuration includes time-frequency position indication information of the reference signal and indication information of reference signal generation parameters.

22. A communication device, the communication device being a communication device of a first system, characterized in that: include: A sending unit, configured to send first information to a terminal device; The first information is used to indicate the parameter configuration of the reference signal of the second system; the first system adopts Long Term Evolution LTE technology, and the second system adopts 5G New Radio 5G NR technology. The first information reconstructs the reference signal of the second system, and the reference signal of the second system is used to reduce interference of the reference signal of the second system through interference elimination when the network device of the first system sends a signal to the terminal device.

23. The device according to claim 22, characterized in that The device further includes: a receiving unit; The receiving unit is used to receive second information from the terminal device; the second information is used to indicate to the communication apparatus that the terminal device requires the communication apparatus to send the first information.

24. The device according to claim 22 or 23, characterized in that The device further includes: a receiving unit; The receiving unit is used to receive third information from the terminal device; the third information is used to indicate the number of interference signals processed by the terminal device, and the interference signal is a reference signal of the second system.

25. The device according to claim 22 or 23, characterized in that The sending unit is specifically configured to send a first radio resource control RRC signaling to the terminal device; the first RRC signaling includes the first information; The sending unit is further used to send first downlink control information DCI to the terminal device; the first DCI is used to indicate the activation of the parameter configuration.

26. The device according to claim 22 or 23, characterized in that The sending unit is specifically used to send a second DCI to the terminal device; the second DCI includes the first information.

27. The device according to claim 22 or 23, characterized in that The parameter configuration includes a first parameter configuration and a second parameter configuration; The sending unit is specifically used to send a second RRC signaling and a third DCI to the terminal device; the second RRC signaling includes information for indicating the first parameter configuration; the third DCI includes information for indicating the second parameter configuration.

28. The device according to claim 22 or 23, characterized in that The parameter configuration includes time-frequency position indication information of the reference signal and indication information of reference signal generation parameters.

29. A communication device, characterized in that: The communication device includes one or more processors coupled to one or more memories; the one or more memories storing computer instructions; When the one or more processors execute the computer instructions, the communication device is caused to perform the communication method according to any one of claims 1 to 7, or When the one or more processors execute the computer instructions, the communication device is caused to perform the communication method according to any one of claims 8 to 14.

30. A chip, characterized in that: The chip includes a processing circuit and an interface; the processing circuit is used to call and run a computer program stored in a storage medium from a storage medium to execute the communication method as described in any one of claims 1 to 7, or to execute the communication method as described in any one of claims 8 to 14.

31. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions; when the instructions are executed, the communication method provided in any one of claims 1 to 7 or the communication method provided in any one of claims 8 to 14 is executed.

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