Channel state information reference signal configuration method and communication apparatus

Abstract

A channel state information reference signal configuration method and a communication apparatus, relating to the technical field of communications. In the method, configuration information of a first RAT may configure a first resource, the first resource comprises P ports, P1 ports among the P ports are further applicable to a second RAT, the first RAT is an RAT evolved from the second RAT, and the second RAT is a 5G-based RAT. Since the P1 ports among the P ports can also be used by devices in the second RAT, devices in the first RAT and the devices in the second RAT can use common ports for CSI-RS transmission, thereby supporting the compatibility of CSI-RS configurations between the first RAT and the second RAT.

Description

Channel state information reference signal configuration method and communication device

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 31, 2024, with application number 202410143358.3 and application name “Configuration method and communication device for channel state information reference signal”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and more specifically, to a configuration method and communication device for a channel state information reference signal. Background Art

[0003] The Channel State Information Reference Signal (CSI-RS) is a reference signal used for channel estimation. After obtaining CSI information, network devices can use it to determine the channel quality, such as modulation and coding scheme (MCS) scheduling, resource block (RB) allocation, and beamforming.

[0004] The fifth generation communication system (5 th The configuration of CSI-RS in 5G is relatively mature. However, 5G will evolve into the sixth generation communication system (6 th Therefore, how to ensure the compatibility between the CSI-RS configuration in the evolved communication system and the CSI-RS configuration in the pre-evolution communication system is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present application provides a method and a communication device for configuring a channel state information reference signal, which can support and ensure the compatibility between the configuration of CSI-RS in an evolved communication system and the configuration of CSI-RS in a pre-evolved communication system.

[0006] In a first aspect, a communication method is provided, including: obtaining configuration information of a first radio access technology RAT, the configuration information configuring a first resource, the first resource including P ports, P1 of the P ports also applicable to a second RAT, the first RAT being a RAT evolved from the second RAT, and P and P1 being integers; and receiving a CSI-RS through the first resource.

[0007] The execution entity of the solution described in the first aspect may be the first device, a module within the first device (such as a chip system), or a logical node, logic module, or software that implements all or part of the functions of the first device, without limitation. For ease of description, the following description uses the first device as an example.

[0008] In the above solution, the first device can determine P ports based on the first resource configured by the configuration information of the first RAT, and can transmit the CSI-RS through the P ports. In addition, because port P1 of the P ports can also be used by devices in the second RAT, devices in the first RAT and devices in the second RAT can use a common port for CSI-RS transmission, thereby supporting compatibility of the CSI-RS configurations of the first RAT and the second RAT.

[0009] By enabling compatibility between the first RAT and the second RAT regarding CSI-RS configuration, the overhead of CSI-RS resources can be effectively reduced. For example, when dynamic spectrum sharing (DSS) is performed between the first RAT and the second RAT, there is no need to configure different CSI-RS resources for the first RAT and the second RAT respectively.

[0010] In a second aspect, a communication method is provided, including: determining configuration information of a first RAT, the configuration information configuring a first resource, the first resource being used for transmission of a CSI-RS, the first resource including P ports, P1 of the P ports being also applicable to a second RAT, the first RAT being a RAT evolved from the second RAT, and P and P1 being positive integers; and sending the configuration information of the first RAT.

[0011] The execution entity of the solution described in the second aspect can be the second device, a module within the second device (such as a chip system), or a logical node, logic module, or software that implements all or part of the functions of the second device, without limitation. For ease of description, the following description uses the second device as an example.

[0012] In combination with the method described in any of the first and second aspects, the first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes P1 ports, the second CSI-RS resource includes P2 ports, P is greater than or equal to the sum of P1 and P2, the first CSI-RS resource and the second CSI-RS resource are located in the same time domain position, and the first CSI-RS resource and the second CSI-RS resource are located in different resource blocks.

[0013] By locating the first CSI-RS resource and the second CSI-RS resource at the same time domain position, it is possible to reduce the signaling indication overhead of the configuration.

[0014] In combination with the method described in any of the first and second aspects, the first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes P1 ports, the second CSI-RS resource includes P2 ports, P is greater than or equal to the sum of P1 and P2, and the first CSI-RS resource and the second CSI-RS resource are located at different time domain positions.

[0015] By locating the first CSI-RS resource and the second CSI-RS resource at different time domain positions, configuration flexibility can be achieved, and at the same time, the effect of time division multiplexing can be realized.

[0016] In combination with the method described in any one of the first aspect and the second aspect, the first CSI-RS resource and the second CSI-RS resource are located at the same frequency domain position.

[0017] In combination with the method described in any of the first and second aspects, the first CSI-RS resource and the second CSI-RS resource correspond to the same number of code division multiplexing groups, and / or the first CSI-RS resource and the second CSI-RS resource correspond to code division multiplexing of the same size.

[0018] In combination with the method described in any one of the first and second aspects, the first CSI-RS resource and the second CSI-RS resource correspond to the same frequency domain density.

[0019] In this way, the channel estimation performance of the first CSI-RS resource and the second CSI-RS resource are the same or close.

[0020] In combination with the method described in any of the first and second aspects, the configuration information includes configuration information of N CSI-RS resources, and the configuration information of the N CSI-RS resources is used to configure the first resource. The sum of the number of ports included in each of the N CSI-RS resources is equal to P, and N is a positive integer.

[0021] In this way, the configuration flexibility of CSI-RS resources can be improved.

[0022] In combination with the method described in any one of the first and second aspects, the N CSI-RS resources correspond to the same group identifier.

[0023] For example, the configuration information for each CSI-RS resource includes a group identifier. For example, the first CSI-RS resource and the second CSI-RS resource are configured with the same group identifier, the X antenna ports corresponding to the first CSI-RS resource and the Y antenna ports corresponding to the second CSI-RS resource are different, that is, there are no overlapping ports, and the total number of antenna ports corresponding to the first CSI-RS resource and the second CSI-RS resource is X + Y.

[0024] By making the N CSI-RS resources correspond to the same group identifier, the number of ports configured for the CSI-RS resources can be effectively increased.

[0025] In combination with the method described in any of the first and second aspects, the configuration information of the N CSI-RS resources includes configuration information of the first CSI-RS resource and configuration information of the second CSI-RS resource, the configuration information of the first CSI-RS resource configures the first CSI-RS resource, and the configuration information of the second CSI-RS resource configures the second CSI-RS resource.

[0026] In this way, the first resource can be configured through the configuration information of the CSI-RS resource, thereby enhancing the configuration flexibility of the CSI-RS resource.

[0027] In combination with the method described in any of the first and second aspects, the time domain symbols corresponding to the first CSI-RS resource and the second CSI-RS resource in their respective time slots have the same number; or, the resource elements corresponding to the first CSI-RS resource and the second CSI-RS resource in their respective resource blocks have the same number.

[0028] When the first CSI-RS resource and the second CSI-RS resource have the same number of time domain symbols corresponding to their respective time slots, this can save signaling indication overhead during configuration.

[0029] When the first CSI-RS resource and the second CSI-RS resource have the same number of corresponding resource elements in their respective resource blocks, this can save signaling indication overhead during configuration.

[0030] In combination with the method described in any of the first and second aspects, P1 is equal to P2.

[0031] In combination with the method described in any of the first and second aspects, P1 is not equal to P2.

[0032] In this way, the flexibility of configuration can be enhanced.

[0033] In combination with the method described in any of the first and second aspects, the configuration information is used to indicate the time slot numbers where the N CSI-RS resources are located.

[0034] Thus, this may indicate the positions of the multiple CSI-RS resources in the time domain.

[0035] In combination with the method described in any one of the first and second aspects, the configuration information is used to indicate the order of time slots in which the N CSI-RS resources are located.

[0036] Thus, this may indicate the positions of the multiple CSI-RS resources in the time domain.

[0037] In combination with the method described in any of the first and second aspects, the configuration information is used to indicate the time slot interval where the N CSI-RS resources are located.

[0038] Thus, this may indicate the positions of the multiple CSI-RS resources in the time domain.

[0039] In combination with the method described in any of the first and second aspects, P is a positive integer greater than 32.

[0040] Thus, this can support configuration of more than 32 ports.

[0041] According to a third aspect, a communication device is provided, comprising: an interface unit for obtaining configuration information of a first RAT, the configuration information configuring a first resource, the first resource comprising P ports, P1 of the P ports also being applicable to a second RAT, the first RAT being a RAT evolved from the second RAT, and P and P1 being integers; and the interface unit further receiving a CSI-RS through the first resource.

[0042] The above-mentioned communication device can also be used to execute the solution described in the method described in the first aspect and any possible manner of the first aspect, which will not be repeated here.

[0043] In a fourth aspect, a communication device is provided, comprising: a processing unit for determining configuration information of a first RAT, the configuration information configuring a first resource, the first resource being used for transmission of a CSI-RS, the first resource including P ports, P1 of the P ports being also applicable to a second RAT, the first RAT being a RAT evolved from the second RAT, and P and P1 being positive integers; and an interface unit for sending the configuration information of the first RAT.

[0044] The above-mentioned communication device can also be used to execute the solution described in the method described in the aforementioned second aspect and any possible manner of the second aspect, which will not be repeated here.

[0045] In a fifth aspect, a communication device is provided, comprising a processor, wherein the processor is configured to, by executing a computer program or instruction, or by a logic circuit, enable the communication device to execute the method described in the first aspect and any possible manner of the first aspect; or, enable the communication device to execute the method described in the second aspect and any possible manner of the second aspect.

[0046] In a possible implementation, the communication device further includes a memory for storing the computer program or instruction.

[0047] In a possible implementation, the communication device further includes a communication interface, which is used to input and / or output signals.

[0048] In a sixth aspect, a communication device is provided, comprising a logic circuit and an input / output interface, the input / output interface being used to input and / or output signals, the logic circuit being used to execute the method described in the first aspect and any possible manner of the first aspect, or the logic circuit being used to execute the method described in the first aspect and any possible manner of the first aspect, or the logic circuit being used to execute the method described in the second aspect and any possible manner of the second aspect.

[0049] In the seventh aspect, a computer-readable storage medium is provided, on which a computer program or instruction is stored. When the computer program or the instruction is run on a computer, the method described in the first aspect and any possible manner of the first aspect is executed, or the method described in the second aspect and any possible manner of the second aspect is executed.

[0050] In an eighth aspect, a computer program product is provided, comprising instructions, which, when executed on a computer, cause the method described in the first aspect and any possible manner of the first aspect to be executed, or cause the method described in the second aspect and any possible manner of the second aspect to be executed.

[0051] In the ninth aspect, a chip system is provided, which is connected to a memory and is used to read and execute a software program stored in the memory to execute the method described in the first aspect and any possible manner in the first aspect, or to execute the method described in the second aspect and any possible manner in the second aspect.

[0052] In the tenth aspect, a chip system is provided, which includes: a communication interface for communicating with other devices; a processor for enabling a communication device equipped with the chip system to execute the method described in the first aspect and any possible manner in the first aspect, or for enabling a communication device equipped with the chip system to execute the method described in the second aspect and any possible manner in the second aspect.

[0053] In the eleventh aspect, a chip system is provided, which includes a processor, a memory and an input / output port, wherein the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the processor executes the method described in the first aspect and any possible manner in the first aspect, or so that the processor executes the method described in the second aspect and any possible manner in the second aspect.

[0054] In the twelfth aspect, a chip system is provided, which is applied to an electronic device, and the chip system includes one or more processors, which are used to call computer instructions to enable the electronic device to execute the method described in the above-mentioned first aspect and any possible manner in the first aspect, or to enable the electronic device to execute the method described in the above-mentioned second aspect and any possible manner in the second aspect.

[0055] The description of the advantageous effects of any of the third to twelfth aspects, etc., can refer to the description of the advantageous effects of the first to second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] FIG1 is a schematic diagram of a communication system applicable to an embodiment of the present application.

[0057] FIG2 is a schematic diagram of another communication system applicable to an embodiment of the present application.

[0058] FIG3 is a schematic diagram of an interaction flow of a communication method according to an embodiment of the present application.

[0059] FIG4 is a schematic diagram of a mapping relationship between P ports and REs according to an embodiment of the present application.

[0060] FIG5 is a schematic diagram of another mapping relationship between P ports and REs according to an embodiment of the present application.

[0061] FIG6 is a schematic diagram of frequency domain density according to an embodiment of the present application.

[0062] FIG7 is a schematic block diagram of a communication device according to an embodiment of the present application.

[0063] FIG8 is a schematic block diagram of another communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0064] Figure 1 is a schematic diagram of a communication system applicable to an embodiment of the present application. As shown in Figure 1, the communication system includes a radio access network (RAN) 100 (or network equipment) and a core network (CN) 200. The RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal device (such as 120a-120j in Figure 1, collectively referred to as 120). The RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). The terminal device 120 is connected to the RAN node 110 via a wireless connection. The RAN node 110 is connected to the core network 200 via a wireless or wired connection. The core network equipment in the core network 200 and the RAN node 110 in the RAN 100 can be different physical devices, or they can be the same physical device that integrates the core network logical functions and the radio access network logical functions.

[0065] RAN 100 can be used for the 3rd Generation Partnership Project (3 rd The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a communication system that integrates two or more of the above systems.

[0066] The RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, facilitates wireless access for terminal devices. Multiple RAN nodes 110 in the communication system can be of the same type or different types. In some scenarios, the roles of the RAN node 110 and the terminal device 120 are relative. For example, the network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminal devices 120j accessing the RAN 100 via network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal device. The RAN node 110 and the terminal device 120 are sometimes both referred to as communication devices. For example, network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functionality, and network elements 120a-120j can be understood as communication devices with terminal functionality.

[0067] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), a next-generation NodeB (gNB), a next-generation base station in a 6G communication system, a base station in a future communication system, or an access node in a WiFi system. A RAN node may be a macro base station (such as 110a in Figure 1 ), a micro base station or an indoor station (such as 110b in Figure 1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario.

[0068] Optionally, the RAN node may also be a server, a wearable device, a vehicle or an on-board device, etc. For example, the access network device in the vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in this application may also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (such as a cloud platform). The RAN node in this application may also be a logical node, logical module or software that can implement all or part of the functions of the RAN node.

[0069] In another possible scenario, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, and different RAN nodes respectively implement part of the functions of the base station. For example, the RAN node can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or they can be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH).

[0070] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0071] In the embodiment of the present application, the network device may also be a device with communication functions in the 6G communication system, without limiting the form or type of the network device in the 6G and other future communication systems.

[0072] In the embodiments of the present application, the communication device used to implement the functions of the network device can be a network device, or a device that can support the network device to implement the functions, such as a chip system. The device can be installed in the network device or used in conjunction with the network device. The chip system in the embodiments of the present application can be composed of a chip, or can include a chip and other discrete devices.

[0073] In an embodiment of the present application, a terminal device is a device with wireless transceiver capabilities, which may refer to user equipment (UE), access terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user device.

[0074] In the embodiment of the present application, the terminal device may also be a satellite phone, a cellular phone, a smart phone, a wireless data card, a wireless modem, a machine type communication device, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a customer-premises equipment (CPE), a smart point of sale (POS) machine, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a communication device carried on a high-altitude aircraft, a wearable device, a drone, a robot, a terminal in device-to-device (D2D) communication, a terminal in vehicle-to-everything (V2X), a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a remote medical device, or a similar device. There is no restriction on wireless terminals in medical, smart grid, transportation safety, smart city, smart home, or terminal devices in communication networks evolved after 5G.

[0075] In the embodiment of the present application, the terminal device may also be a device with communication functions in the 6G communication system, without limiting the form or type of the terminal device in the 6G and other future communication systems.

[0076] In the embodiments of the present application, the communication device used to implement the functions of the terminal device can be the terminal device, or it can be a device that can support the terminal device to implement the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the present application, the chip system can be composed of a chip or include a chip and other discrete devices.

[0077] FIG2 is a schematic diagram of another communication system applicable to embodiments of the present application. As shown in FIG2 , the communication system includes a first device and a second device. The first device and the second device communicate with each other, for example, the second device transmits a CSI-RS to the first device, or the second device transmits a CSI-RS to the first device.

[0078] The second device may be the aforementioned terminal device, and the first device may be the aforementioned network device; or, the second device may be the aforementioned terminal device, and the first device may be the aforementioned terminal device, etc.

[0079] The first device and the second device may be devices in a communication system evolved from the 5G communication system, for example, the first device and the second device are devices in a 6G communication system, or the first device and the second device are devices in a higher version of 5G, for example, relative to the 5G Release 18 standard protocol version released by 3GPP, the first device and the second device are devices that comply with the 5G Release 19 standard protocol.

[0080] For ease of description, the following takes the first device and the second device as devices or equipment in the first radio access technology (radio access technology, RAT) as an example. The first RAT is a RAT evolved from the second RAT, and the CSI-RS configuration between the first RAT and the second RAT is compatible. For details, please refer to the description below.

[0081] To facilitate description and understanding, the terms involved in the embodiments of the present application are first briefly described.

[0082] 1. CSI-RS:

[0083] CSI-RS types include non-zero power (NZP) CSI-RS and zero power (ZP) CSI-RS. NZP-CSI-RS can be used for beam management, mobility management measurements, time-frequency tracking, and channel measurements, while ZP-CSI-RS can be used for rate matching.

[0084] 2. Port:

[0085] A port is also called an antenna port. A CSI-RS resource can be configured with one or more ports, and one port is mapped to one or more orthogonal frequency division multiplexing (OFDM) symbols, or in other words, one port is mapped to one or more resource elements (REs).

[0086] 3. Code division multiplexing (CDM) size:

[0087] The size N of a CDM indicates the length of the orthogonal cover code (OCC) used, which is N, and also indicates the number of independent antenna ports included in the CDM. A CDM of length N corresponds to N resource units, and an OCC of length N is used on these N resource units. These N resource units can be resource units located in different frequency domains and / or resource units located in different OFDM symbols. In other words, CDM includes time-domain CDM, frequency-domain CDM, and simultaneous time-domain and frequency-domain CDM.

[0088] For example, the following CDM sizes are supported:

[0089] CDM2: 2 adjacent REs in the frequency domain and 1 OFDM symbol in the time domain.

[0090] CDM4: 2 adjacent REs in the frequency domain and 2 adjacent OFDM symbols in the time domain.

[0091] CDM8: 2 adjacent REs in the frequency domain and 4 adjacent OFDM symbols in the time domain.

[0092] A CDM group may include one or more CDMs. The multiplexing mode between different CDM groups includes frequency division multiplexing or time division multiplexing.

[0093] 4. Frequency domain density of CSI-RS resources:

[0094] The inverse of the frequency domain density of the CSI-RS resource can be used to indicate that the CSI-RS resource is repeatedly mapped every 1 / ρ (used to characterize the frequency domain density of the CSI-RS resource) resource blocks (RBs). The frequency domain density of the CSI-RS resource includes, but is not limited to, 1, 0.5, and 3.

[0095] For example, if the frequency domain density of CSI-RS resources is 0.5, one RB out of every two RBs is allocated with CSI-RS resources.

[0096] For example, if the frequency domain density of a CSI-RS resource is 1, all ports included in a CSI-RS resource are mapped to one RB, or in other words, each RB is configured with a CSI-RS resource.

[0097] ◆For example, the frequency domain density of the CSI-RS resource = 3, and one CSI-RS resource can be repeatedly mapped on every 4 REs.

[0098] For an example description of the frequency domain density of CSI-RS resources, please refer to FIG6 .

[0099] The communication method of the embodiment of the present application is described below in conjunction with Figure 3.

[0100] FIG3 is a schematic diagram of an interactive flow of a communication method according to an embodiment of the present application. The method shown in FIG3 can be performed by the first device and the second device, or by modules and / or devices (for example, chips or integrated circuits, etc.) with corresponding functions installed in the first device and the second device, without limitation. The following description takes the second device (which can be a network device) and the first device (which can be a terminal device) as an example. As shown in FIG3, the method includes:

[0101] S301. The second device determines configuration information of the first RAT.

[0102] The configuration information of the first RAT is used to configure a first resource, which is used for CSI-RS transmission. The first resource includes P ports (which can also be understood as the first resource being configured with P ports), and P1 of the P ports is also applicable to the second RAT. P and P1 are both positive integers, for example, P can be a positive integer greater than 32.

[0103] In one possible implementation, the first RAT is a RAT evolved from the second RAT.

[0104] Exemplarily, the second RAT is a 5G-based RAT, and the first RAT is a RAT based on a future communication system, such as a 6G-based RAT. In other words, the second RAT is composed of RATs in 5G, and the first RAT is composed of RATs in 6G.

[0105] Exemplarily, the second RAT is a RAT based on the first version of 5G, the first RAT is a RAT based on the second version of 5G, and the second version is a version evolved from the first version. In other words, the first RAT is composed of the RATs included in the first version of 5G, and the second RAT is composed of the RATs included in the second version of 5G. For example, the first version of 5G represents the standard protocol of 5G Release 18 defined by 3GPP, and the second version of 5G represents the standard protocol of 5G Release 19 defined by 3GPP.

[0106] In summary, there is an association relationship between the first RAT and the second RAT. When the P ports P1 among the aforementioned P ports are also applicable to the second RAT, the CSI-RS configurations of the first RAT and the second RAT are compatible.

[0107] The phrase "P1 ports are also applicable to the second RAT" can be understood as follows: port P1 of the P ports can be allocated for use by devices in the second RAT. For example, devices in the second RAT can also use port P1 of the P ports for CSI-RS transmission. In other words, there may be overlap between the ports used by devices in the first RAT and the ports used by devices in the second RAT. Alternatively, devices in the first RAT and the second RAT can use a common port for CSI-RS transmission. Furthermore, network devices in the second RAT can configure CSI-RS resources for P1 ports according to the standard protocol of the second RAT.

[0108] In one possible implementation, P2 ports among the P ports are not applicable to the second RAT, and the P2 ports are different from the P1 ports.

[0109] It can be understood that, since there are P2 ports that are not applicable to the second RAT, the network device in the second RAT cannot configure CSI-RS resources of P ports according to the standard protocol of the second RAT.

[0110] In one possible implementation, configuration information used to configure CSI-RS resources in the first RAT is different from configuration information used to configure CSI-RS resources in the second RAT.

[0111] For example, the configuration information sent by a 5G network device for configuring CSI-RS resources is different from the configuration information sent by a 6G network device for configuring CSI-RS resources, but the CSI-RS resources configured by the two configuration information have partially or completely overlapping ports.

[0112] In a possible implementation, the first resource includes multiple CSI-RS resources, and each CSI-RS resource can be configured independently or uniformly.

[0113] When the first resource includes multiple CSI-RS resources, each CSI-RS resource includes some of P ports. For example, the multiple CSI-RS resources include a first CSI-RS resource and a second CSI-RS resource. The first CSI-RS resource includes P1 ports, the second CSI-RS resource includes P2 ports, the sum of P1 and P2 is less than or equal to P, and P1 and P2 are both positive integers.

[0114] When multiple CSI-RS resources included in the first resource are independently configured, this can support flexible configuration of CSI-RS resources.

[0115] When the multiple CSI-RS resources included in the first resource are uniformly configured, this can effectively reduce signaling overhead, for example, there is no need to indicate the configuration information of each CSI-RS resource separately.

[0116] In another possible implementation, the multiple CSI-RS resources in the first resource are configured through configuration information of the CSI-RS resources.

[0117] For example, the configuration information of the first RAT includes configuration information of at least two CSI-RS resources, and the configuration information of each CSI-RS resource is used to configure the corresponding CSI-RS resource. Exemplarily, the configuration information of the at least two CSI-RS resources includes configuration information of a first CSI-RS resource and configuration information of a second CSI-RS resource, the configuration information of the first CSI-RS resource configures the first CSI-RS resource, and the configuration information of the second CSI-RS resource configures the second CSI-RS resource;

[0118] For another example, the configuration information of the first RAT includes configuration information of a CSI-RS resource, and the configuration information of the CSI-RS resource is used to configure the aforementioned multiple CSI-RS resources. Exemplarily, the configuration information of the first RAT includes configuration information of a first CSI-RS resource, and the configuration information of the first CSI-RS resource is used to configure the first CSI-RS resource and the second CSI-RS resource (taking the example where the first resource includes the first CSI-RS resource and the second CSI-RS resource).

[0119] In this way, the first resource can be configured through the configuration information of the CSI-RS resource, thereby enhancing the configuration flexibility of the CSI-RS resource.

[0120] In one possible implementation, the configuration information of the first RAT may include configuration information for N CSI-RS resources, where N is a positive integer. The configuration information for the N CSI-RS resources can configure the first resource, and the sum of the number of ports included in each of the N CSI-RS resources is equal to P. This improves the configuration flexibility of the CSI-RS resources.

[0121] For example, N=1, the configuration information of the first RAT includes configuration information of one CSI-RS resource, such as configuration information of a first CSI-RS resource, the configuration information of the first CSI-RS resource configures a first CSI-RS resource, the first CSI-RS resource includes P ports, and the first resource is the first CSI-RS resource;

[0122] For example, N=2, the configuration information of the first RAT includes configuration information of two CSI-RS resources, such as configuration information of a first CSI-RS resource and configuration information of a second CSI-RS resource, the configuration information of the first CSI-RS resource configures the first CSI-RS resource, the configuration information of the second CSI-RS resource configures the second CSI-RS resource, the first CSI-RS resource includes P1 ports, the second CSI-RS resource includes P2 ports, the sum of P1 and P2 is less than or equal to P, the first resource includes the first CSI-RS resource and the second CSI-RS resource, or in other words, the first resource consists of the first CSI-RS resource and the second CSI-RS resource;

[0123] ◆For example, N=3, the configuration information of the first RAT includes configuration information of three CSI-RS resources, such as configuration information of the first CSI-RS resource, configuration information of the second CSI-RS resource, and configuration information of the third CSI-RS resource. The configuration information of the first CSI-RS resource configures the first CSI-RS resource, the configuration information of the second CSI-RS resource configures the second CSI-RS resource, and the configuration information of the third CSI-RS resource configures the third CSI-RS resource. The first CSI-RS resource includes P1 ports, the second CSI-RS resource includes P2 ports, and the third CSI-RS resource includes P3 ports. The sum of P1, P2 and P3 is less than or equal to P. The first resource includes the first CSI-RS resource, the second CSI-RS resource and the third CSI-RS resource. In other words, the first resource consists of the first CSI-RS resource, the second CSI-RS resource and the third CSI-RS resource.

[0124] In a possible implementation, the N CSI-RS resources mentioned above correspond to the same group identifier.

[0125] For example, the configuration information of each CSI-RS resource includes a group identifier. For example, if the first CSI-RS resource and the second CSI-RS resource are configured with different group identifiers, then the X antenna ports corresponding to the first CSI-RS resource and the Y antenna ports corresponding to the second CSI-RS resource have overlapping ports, that is, they have the same port number, and the number of identical port numbers is min(X,Y), that is, the minimum value of X and Y. If the first CSI-RS resource and the second CSI-RS resource are configured with the same group identifier, then the X antenna ports corresponding to the first CSI-RS resource and the Y antenna ports corresponding to the second CSI-RS resource are different, that is, there are no overlapping ports, and the total number of antenna ports corresponding to the first CSI-RS resource and the second CSI-RS is X+Y.

[0126] By making the N CSI-RS resources correspond to the same group identifier, the number of ports configured for the CSI-RS resources can be effectively increased.

[0127] For ease of description, the following description is given by taking the example of the first resource including the first CSI-RS resource and the second CSI-RS resource. The first CSI-RS resource and the second CSI-RS resource can be configured by the configuration information of the first CSI-RS resource and the configuration information of the second CSI-RS resource, respectively, or by the configuration information of one CSI-RS resource, without limitation.

[0128] When the first resource includes the first CSI-RS resource and the second CSI-RS resource, the first CSI-RS resource includes P1 ports, and the second CSI-RS resource includes P2 ports, or in other words, the P ports can be divided into two categories: P1 ports and P2 ports.

[0129] For example, the device in the first RAT uses P ports to transmit CSI-RS, and the device in the second RAT uses the first CSI-RS resource to transmit CSI-RS. In other words, the device in the second RAT can only use P1 ports to transmit CSI-RS and cannot use P2 ports to transmit CSI-RS.

[0130] In the embodiment of the present application, the P2 ports may also be understood as ports used only by devices in the first RAT, and the P1 ports may also be understood as ports used jointly by devices in the first RAT and devices in the second RAT, that is, shared ports.

[0131] In this way, it is possible to ensure that the devices in the first RAT use the CSI-RS resources and also to make the configuration of the CSI-RS between the first RAT and the second RAT compatible.

[0132] In the embodiment of the present application, each port can be mapped to one RE. When P ports are divided into two types of ports, the mapping relationship between the P ports and REs can be seen in FIG4 .

[0133] FIG4 is a schematic diagram of a mapping relationship between P ports and REs according to an embodiment of the present application. Taking the P ports as an example, the following are exemplary:

[0134] ◆As shown in (a) of Figure 4, the P ports include P1 ports (represented by cross texture) and P2 ports (represented by slash texture). The P1 ports and P2 ports are located in the same RB, P1=12, P2=12, the P1 ports are mapped to 12 REs respectively, and the P2 ports are mapped to 12 REs respectively.

[0135] ◆As shown in (b) of Figure 4, the P ports include P1 ports (represented by cross texture) and P2 ports (represented by slash texture). The P1 ports and P2 ports are located in different RBs. For example, the P1 port is mapped to RB1, and the P2 port is mapped to RB2. P1=12, P2=12, the P1 port is mapped to 12 REs in RB1, and the P2 ports are mapped to 12 REs in RB2.

[0136] FIG4 describes an example in which P ports are mapped to one RB and two RBs respectively. P ports may also be mapped to more than two RBs, which is not limited.

[0137] When the first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource and the second CSI-RS resource may be located in the same RB or in different RBs.

[0138] When the first CSI-RS resource and the second CSI-RS resource are located in the same RB, see (a) of FIG. 4 .

[0139] When the first CSI-RS resource and the second CSI-RS resource are located in different RBs, see FIG4( b ).

[0140] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource are located in different RBs, and the first CSI-RS resource and the second CSI-RS resource are located in the same time domain position.

[0141] By locating the first CSI-RS resource and the second CSI-RS resource at the same time domain position, a time division multiplexing effect can be achieved.

[0142] When the first CSI-RS resource and the second CSI-RS resource are located at the same time domain position, the first CSI-RS resource and the second CSI-RS resource may be located at different frequency domain positions, wherein the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource are the same.

[0143] ◆For example, the first CSI-RS resource and the second CSI-RS resource are located at different frequency domain positions, and the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource are the same, such as both are 0.5 or 3.

[0144] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource are located in different RBs, and the first CSI-RS resource and the second CSI-RS resource are located in different time domain positions.

[0145] By locating the first CSI-RS resource and the second CSI-RS resource at different time domain positions, configuration flexibility can be achieved.

[0146] When the first CSI-RS resource and the second CSI-RS resource are located at different time domain positions, the first CSI-RS resource and the second CSI-RS resource may be located at the same frequency domain position or at different frequency domain positions.

[0147] The frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource may be the same or different.

[0148] When the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource are the same, the channel estimation performance of the first CSI-RS resource and the second CSI-RS resource are the same or close.

[0149] When the frequency domain density of the first CSI-RS resource is different from the frequency domain density of the second CSI-RS resource, the configuration of the CSI-RS resource is more flexible. Under the premise of ensuring that the channel estimation performance meets the requirements, the frequency domain density can be reduced and resource overhead can be saved.

[0150] For example, the first CSI-RS resource and the second CSI-RS resource are located at the same frequency domain position, and the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource are the same, such as 0.5, 1, or 3;

[0151] For example, the first CSI-RS resource and the second CSI-RS resource are located at the same frequency domain position, and the frequency domain density of the first CSI-RS resource is different from the frequency domain density of the second CSI-RS resource. For example, the frequency domain density of the first CSI-RS resource is 0.5, and the frequency domain density of the second CSI-RS resource is 0.25.

[0152] For example, when the first CSI-RS resource and the second CSI-RS resource are located at different frequency domain positions, the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource are the same, such as 0.5, 1, or 3.

[0153] ◆For example, when the first CSI-RS resource and the second CSI-RS resource are located at different frequency domain positions, the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource are different. For example, the frequency domain density of the first CSI-RS resource is 0.5, and the frequency domain density of the second CSI-RS resource is 0.25.

[0154] For further description of the first CSI-RS resource and the second CSI-RS resource being located in different RBs, please refer to FIG. 5 .

[0155] FIG5 is a schematic diagram of another mapping relationship between P ports and REs according to an embodiment of the present application. For example, the P ports include P1 ports and P2 ports, and P1=32 and P2=32.

[0156] As shown in Figure 5(a), the P1 port is mapped to RB1, and the P2 port is mapped to RB2. The P1 port and the P2 port are located at the same time domain position and the same frequency domain position.

[0157] As shown in Figure 5(b), the P1 port is mapped to RB1, and the P2 port is mapped to RB2. The P1 port and the P2 port are located at the same time domain position but at different frequency domain positions.

[0158] As shown in Figure 5(c), the P1 port is mapped to RB1, and the P2 port is mapped to RB2. The P1 port and the P2 port are located at the same frequency domain position but at different time domain positions.

[0159] As shown in (d) of Figure 5 , the P1 port is mapped to RB1, and the P2 port is mapped to RB2. The P1 port and the P2 port are located at different time domain positions and different frequency domain positions.

[0160] In the embodiment of the present application, the first CSI-RS resource and the second CSI-RS resource are located at the same frequency domain position, which may be: the first CSI-RS resource and the second CSI-RS resource are located in the same RB and at the same frequency domain position, that is, in the RB, the resource units occupied by the two resources are numbered the same. Alternatively, the first CSI-RS resource and the second CSI-RS resource are located in different RBs and at the same frequency domain position. It should be understood that the same frequency domain position described here means that the first CSI-RS resource and the second CSI-RS resource have the same number relative to the starting resource unit of each RB in their respective RBs, for example, both are located in the 1st to 8th resource units of their respective RBs.

[0161] For a description of the relationship between the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource, please refer to FIG6 .

[0162] FIG6 is a schematic diagram showing the relationship between the frequency domain density of the first CSI-RS resource and the frequency domain density of the second CSI-RS resource according to an embodiment of the present application.

[0163] ◆As shown in (a) of Figure 6, the first CSI-RS resource includes 32 ports (indicated by a cross texture), the second CSI-RS resource includes 32 ports (indicated by a slash texture), the first CSI-RS resource and the second CSI-RS resource are located in different RBs, the first CSI-RS resource and the second CSI-RS resource are located in the same time domain position and the same frequency domain position, the first CSI-RS resource can be mapped to RB1 and RB3, the second CSI-RS resource can be mapped to RB2 and RB4, and the frequency domain density of the first CSI-RS resource and the second CSI-RS resource is 0.5.

[0164] ◆As shown in (b) of Figure 6, the first CSI-RS resource includes 32 ports (indicated by a cross texture), the second CSI-RS resource includes 32 ports (indicated by a slash texture), the first CSI-RS resource and the second CSI-RS resource are located in the same RB, the first CSI-RS resource and the second CSI-RS resource are located in the same frequency domain position and different time domain positions, the first CSI-RS resource can be mapped to RB1-RB4, the second CSI-RS resource can be mapped to RB1 and RB3, the frequency domain density of the first CSI-RS resource is 1, and the frequency domain density of the second CSI-RS resource is 0.5.

[0165] It should be noted that the content shown in FIG6 is only understood as an example and is not a final limitation.

[0166] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource are located at different time domain positions, so as to achieve the effect of time domain multiplexing and increase the number of CSI-RS ports.

[0167] When the first CSI-RS resource and the second CSI-RS resource are located at different time domain positions, the first CSI-RS resource and the second CSI-RS resource may be located in the same RB or in different RBs.

[0168] When the first CSI-RS resource and the second CSI-RS resource are located in different RBs, please refer to the description of FIG. 5 .

[0169] When the first CSI-RS resource and the second CSI-RS resource are located in the same RB, please refer to the description of (a) of FIG4 .

[0170] When the first CSI-RS resource and the second CSI-RS resource are located at different time domain positions, the first CSI-RS resource and the second CSI-RS resource may be located at the same frequency domain position or at different frequency domain positions.

[0171] When the first CSI-RS resource and the second CSI-RS resource are located at the same frequency domain position, reference may be made to the descriptions of FIG. 4 and FIG. 5( a ) and FIG. 5( c ).

[0172] When the first CSI-RS resource and the second CSI-RS resource are located at different frequency domain positions, please refer to the description of FIG5(b) and FIG5(d).

[0173] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource are located in the same RB and at different time domain positions, and the first CSI-RS resource and the second CSI-RS resource are located at the same frequency domain position.

[0174] In this way, the signaling overhead for indicating the second CSI-RS resource can be reduced. For example, only the time domain position of the second CSI-RS resource can be indicated. In addition, this can achieve the effect of time domain multiplexing and increase the number of CSI-RS ports.

[0175] In the embodiment of the present application, the first CSI-RS resource includes P1 ports, and the second CSI-RS resource includes P2 ports. The P1 port can be determined by CDM, and the P2 port can also be determined by CDM.

[0176] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource may correspond to the same number of CDM groups, which can save signaling overhead during configuration.

[0177] For example, P1=32, P2=16, the first CSI-RS resource includes 4 CDM groups, the size of each CDM is 8, and the second CSI-RS resource includes 4 CDM groups, the size of each CDM is 4.

[0178] 5 , it can be seen that P1=32, P2=32, the P1 ports include 4 CDM groups of size 8, and the P2 ports include 4 CDM groups of size 8.

[0179] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource may correspond to CDMs of the same size, which can save signaling overhead during configuration.

[0180] For example, P1=32, P2=16, the first CSI-RS resource includes 8 CDM groups, the size of each CDM is 4, and the second CSI-RS resource includes 4 CDM groups, the size of each CDM is 4.

[0181] 5 , it can be seen that P1=32, P2=32, the P1 ports include 4 CDM groups of size 8, and the P2 ports include 4 CDM groups of size 8.

[0182] In one possible implementation, the first CSI-RS resource and the second CSI-RS resource may correspond to the same number of CDM groups and the same size of CDMs.

[0183] For example, if P1=P2=32, the P1 ports include 4 CDM groups of size 8, and the P2 ports include 4 CDM groups of size 8. Therefore, when P1=P2, the first CSI-RS resource and the second CSI-RS resource can correspond to the same number of CDM groups and the same size of CDM.

[0184] In the embodiment of the present application, the first CSI-RS resource and the second CSI-RS resource may be located in the same time slot or in different time slots. When the first CSI-RS resource and the second CSI-RS resource are located in the same time slot, the description of the frequency domain density and CDM of the first CSI-RS resource and the second CSI-RS resource can be found in the previous text and will not be repeated here.

[0185] In one possible implementation, the first resource is located in T time slots, the first CSI-RS resource is located in the first time slot, the second CSI-RS resource is located in the second time slot, the first time slot is different from the second time slot, and the first time slot and the second time slot belong to the T time slots.

[0186] When the first resource is located in T time slots, each of the T time slots may include a CSI-RS resource, or some of the time slots may include a CSI-RS resource.

[0187] When some of the T time slots include CSI-RS resources, the time slot interval between adjacent time slots in the part of the time slots may be D. When each time slot includes CSI-RS resources, D=0.

[0188] In one possible implementation, the configuration information of the first RAT may indicate the T value and / or the D value.

[0189] In one possible implementation, the configuration information of the first RAT indicates the time slot number or time slot index where the N CSI-RS resources are located.

[0190] For example, T=2, N=2, and the configuration information of the first RAT indicates that the first CSI-RS resource is in the first time slot of T time slots, and the second CSI-RS resource is in the second time slot of T time slots. In this way, the second device can determine the time slot position of each CSI-RS resource based on the configuration information of the first RAT.

[0191] In one possible implementation, the configuration information of the first RAT indicates the order of time slots in which the N CSI-RS resources are located.

[0192] For example, N=2, T=2, the T time slots include time slot 1 and time slot 2 in sequence, the first CSI-RS resource is located in time slot 1, and the second CSI-RS resource is located in time slot 2. In this way, the second device can determine the CSI-RS resource corresponding to each time slot according to the configuration information of the first RAT.

[0193] For another example, N=2, T=4, and the T time slots include time slot 1, time slot 2, time slot 3, and time slot 4, respectively. The first CSI-RS resource is located in time slot 1, and the second CSI-RS resource is located in time slot 3. In this way, the second device can determine the CSI-RS resource corresponding to each time slot based on the configuration information of the first RAT.

[0194] When the first CSI-RS resource and the second CSI-RS resource are located in different time slots, the time-domain OFDM numbers corresponding to the first CSI-RS resource and the second CSI-RS resource in their respective time slots may be the same. This can reduce signaling overhead. For example, only the OFDM number corresponding to one CSI-RS in the corresponding time slot may be indicated.

[0195] When the first CSI-RS resource and the second CSI-RS resource are located in different time slots, the time-domain OFDM symbol numbers corresponding to the first CSI-RS resource and the second CSI-RS resource in their respective time slots may be different. This allows for flexible configuration of the position of each CSI-RS resource in its respective time slot.

[0196] When the first CSI-RS resource and the second CSI-RS resource are located in different time slots, the RE numbers corresponding to the first CSI-RS resource and the second CSI-RS resource in their respective RBs are the same. This can reduce signaling overhead. For example, only the RE number corresponding to one CSI-RS in the corresponding RB can be indicated.

[0197] When the first CSI-RS resource and the second CSI-RS resource are located in different time slots, the RE numbers corresponding to the first CSI-RS resource and the second CSI-RS resource in their respective RBs may be different. In this way, the position of each CSI-RS resource in its respective RB can be flexibly configured.

[0198] Considering CDM, the CSI-RS sequence before applying the CDM OCC code is called the CSI-RS base sequence. Different ports of the same CDM have the same CSI-RS base sequence before applying the OCC code. After applying the OCC code, the CSI-RS of different ports of the same CDM meet orthogonality.

[0199] Optionally, the base sequences of the CSI-RSs of the first RAT and the second RAT are generated in the same manner. In this way, the base sequences of the CSI-RSs of the P1 ports shared by the first RAT and the second RAT are the same.

[0200] S302. The second device sends configuration information of the first RAT to the first device.

[0201] Correspondingly, the first device receives or obtains the configuration information of the first RAT.

[0202] S303: The second device sends a CSI-RS to the first device through the first resource.

[0203] Correspondingly, the first device receives the CSI-RS through the first resource.

[0204] In the above solution, the first device may determine P ports according to the first resource configured by the configuration information of the first RAT, and may transmit the CSI-RS through the P ports.

[0205] Since the P1 port among the P ports can also be used by devices in the second RAT, the devices in the first RAT and the devices in the second RAT can use a common port for CSI-RS transmission, thereby supporting compatibility between the first RAT and the second RAT regarding CSI-RS configuration.

[0206] By enabling compatibility between the first RAT and the second RAT regarding CSI-RS configuration, the overhead of CSI-RS resources can be effectively reduced. For example, there is no need to configure different CSI-RS resources for the first RAT and the second RAT respectively.

[0207] In summary, the CSI-RS configurations between the first RAT and the second RAT are compatible. For example, the device in the second RAT can use some of the P ports configured by the configuration information of the first RAT to transmit CSI-RS.

[0208] Furthermore, this can effectively reduce the overhead of CSI-RS resources. For example, when dynamic spectrum sharing is performed between the first RAT and the second RAT, there is no need to configure different CSI-RS resources for the devices in the first RAT and the devices in the second RAT respectively. The CSI-RS resources configured for the devices in the first RAT and the CSI-RS resources configured for the devices in the second RAT can share some or all ports, which can save the overhead of time-frequency resources and improve the efficiency of spectrum sharing.

[0209] Finally, the device embodiment of the embodiment of the present application is introduced.

[0210] To implement the various functions of the method provided herein, the first device and the second device may each include hardware structures and / or software modules, and implement the aforementioned functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is implemented in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0211] 7 is a schematic block diagram of a communication device according to an embodiment of the present application. The communication device includes a processor 710 and a communication interface 720, which can be interconnected via a bus 730. The communication device can be a first device or a second device.

[0212] Optionally, the communication device may further include a memory 740. The memory 740 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or portable read-only memory (CD-ROM), and is used for related instructions and data.

[0213] The processor 710 may be one or more central processing units (CPUs). In the case where the processor 710 is a CPU, the CPU may be a single-core CPU or a multi-core CPU.

[0214] When the communication device is the second device, illustratively, the processor 710 is configured to perform the following operations: determine configuration information of the first RAT; send the configuration information of the first RAT, etc.

[0215] When the communication device is a first device, illustratively, the processor 710 is configured to perform the following operations: receive configuration information of a first RAT; receive a CSI-RS through a first resource, etc.

[0216] The above contents are described as examples only. The communication device is the first device or the second device, which is responsible for executing the method or steps related to the first device or the second device in the above method embodiment.

[0217] The above description is merely an example description. For details, please refer to the contents shown in the above method embodiment.

[0218] The implementation of each operation in FIG. 7 may also correspond to the corresponding description of the method embodiment shown in FIG. 3 .

[0219] Figure 8 is a schematic block diagram of another communication device according to an embodiment of the present application. The communication device may be the first device or the second device, or a chip or module in the first device or the second device, for implementing the method according to the above embodiment.

[0220] The communication device includes an interface unit 810. The interface unit 810 may include a transmitting unit and a receiving unit. The transmitting unit is configured to execute a transmitting operation of the communication device, and the receiving unit is configured to execute a receiving operation of the communication device. For ease of description, this embodiment of the application combines the transmitting unit and the receiving unit into a single interface unit. This is described here as a unified description and will not be repeated later.

[0221] When the communication device is the second device, illustratively, the interface unit 810 is configured to send configuration information of the first RAT, etc.

[0222] Optionally, the communication device may further include a processing unit 820, which is configured to execute the content of the first device involving processing, coordination, etc. For example, the processing unit 820 is configured to use the first resource, etc.

[0223] When the communication device is the first device, illustratively, the interface unit 810 is configured to receive configuration information and a CSI-RS of the first RAT, etc.

[0224] Optionally, the communication device may further include a processing unit 820, which is used to execute the content of the second device involving processing, coordination and other steps.

[0225] The above contents are described as examples only. The communication device is the first device or the second device, which is responsible for executing the methods or steps related to the first device or the second device in the above method embodiments.

[0226] Optionally, the communication device further includes a storage unit 830, which is used to store a program or code for executing the aforementioned method.

[0227] The device embodiments shown in Figures 7 and 8 are used to implement the content described in Figure 3. The specific execution steps and methods of the devices shown in Figures 7 and 8 can refer to the content described in the above method embodiments.

[0228] The above description of the communication device is only used as an example. The communication device can be used to execute the method described in the above embodiment. For specific content, please refer to the description of the above method embodiment, which will not be repeated here.

[0229] The present application also provides a chip, including a processor, for calling and executing instructions stored in a memory from the memory, so that a communication device equipped with the chip executes the methods in the above examples.

[0230] The present application also provides another chip, comprising: an input interface, an output interface, and a processor, wherein the input interface, the output interface, and the processor are connected via an internal connection path, and the processor is configured to execute code in a memory. When the code is executed, the processor is configured to execute the methods in the above examples. Optionally, the chip also includes a memory, which is configured to store computer programs or code.

[0231] The present application also provides a processor for coupling with a memory, and for executing the methods and functions involving a network device or a terminal device in any of the above embodiments.

[0232] In another embodiment of the present application, a computer program product including instructions is provided. When the computer program product is run on a computer, the method of the above embodiment is implemented.

[0233] The present application also provides a computer program. When the computer program is executed in a computer, the method of the aforementioned embodiment is implemented.

[0234] In another embodiment of the present application, a computer-readable storage medium is provided, which stores a computer program. When the computer program is executed by a computer, the method described in the above embodiment is implemented.

[0235] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0236] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0237] In the several embodiments provided in this application, the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0238] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0239] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0240] When the above-mentioned communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the above-mentioned method embodiment. When the terminal chip receives information from the base station, it can be understood that the information is first received by other modules in the terminal (such as a radio frequency module or antenna) and then sent to the terminal chip by these modules. When the terminal chip sends information to the base station, it can be understood that the information is first sent to other modules in the terminal (such as a radio frequency module or antenna) and then sent to the base station by these modules.

[0241] When the above-mentioned communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the above-mentioned method embodiment. When the base station chip receives information from the terminal, it can be understood that the information is first received by other modules in the base station (such as a radio frequency module or antenna) and then sent to the base station chip by these modules. When the base station chip sends information to the terminal, it can be understood that the information is sent to other modules in the base station (such as a radio frequency module or antenna) and then sent to the terminal by these modules.

[0242] In this application, when entity A sends information to entity B, it can be done directly from A to B or indirectly through another entity. Similarly, when entity B receives information from entity A, it can be done directly from entity B or indirectly through another entity. Entities A and B herein can be RAN nodes or terminals, or modules within a RAN node or terminal. The sending and receiving of information can be information exchange between a RAN node and a terminal, for example, between a base station and a terminal; the sending and receiving of information can also be information exchange between two RAN nodes, for example, between a CU and a DU; the sending and receiving of information can also be information exchange between different modules within a device, for example, between a terminal chip and other modules in the terminal, or between a base station chip and other modules within the base station.

[0243] It is understood that the processor in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0244] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and storage medium can also exist in a base station or a terminal as discrete components.

[0245] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0246] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0247] Depending on whether it is used in the specification, it is optional: In this application, "at least one" means one or more, and "more" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of this application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0248] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A method for configuring a channel state information reference signal, characterized in that: include: Obtain configuration information of a first radio access technology RAT, where the configuration information configures a first resource, where the first resource includes P ports, where P1 ports of the P ports are also applicable to a second RAT, where the first RAT is a RAT evolved from the second RAT, and where P and P1 are both integers; A channel state information reference signal CSI-RS is received through the first resource.

2. The method according to claim 1, characterized in that The first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes the P1 ports, the second CSI-RS resource includes P2 ports, P is greater than or equal to the sum of P1 and P2, At least one of a time domain position and a frequency domain position of the first CSI-RS resource and the second CSI-RS resource is different.

3. The method according to claim 2, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same number of code division multiplexing groups, and / or, The first CSI-RS resource and the second CSI-RS resource correspond to code division multiplexing of the same size.

4. The method according to claim 2 or 3, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same frequency domain density.

5. The method according to any one of claims 1 to 4, characterized in that The configuration information includes configuration information of N CSI-RS resources, where the configuration information of the N CSI-RS resources is used to configure the first resource. The sum of the number of ports included in each of the N CSI-RS resources is equal to P, and N is a positive integer.

6. The method according to claim 5, characterized in that The N CSI-RS resources correspond to the same group identifier.

7. A method for configuring a channel state information reference signal, characterized in that: include: Determine configuration information of a first radio access technology RAT, where the configuration information configures a first resource, where the first resource is used for transmitting a channel state information reference signal CSI-RS, where the first resource includes P ports, where P1 ports of the P ports are also applicable to a second RAT, where the first RAT is a RAT evolved from the second RAT, and where P and P1 are both positive integers; Send configuration information of the first RAT.

8. The method according to claim 7, characterized in that The first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes the P1 ports, the second CSI-RS resource includes P2 ports, P is greater than or equal to the sum of P1 and P2, At least one of a time domain position and a frequency domain position of the first CSI-RS resource and the second CSI-RS resource is different.

9. The method according to claim 8, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same number of code division multiplexing groups, and / or, The first CSI-RS resource and the second CSI-RS resource correspond to code division multiplexing of the same size.

10. The method according to claim 8 or 9, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same frequency domain density.

11. The method according to any one of claims 7 to 10, characterized in that The configuration information includes configuration information of N CSI-RS resources, where the configuration information of the N CSI-RS resources is used to configure the first resource. The sum of the number of ports included in each of the N CSI-RS resources is equal to P, and N is a positive integer.

12. The method according to claim 11, characterized in that The N CSI-RS resources correspond to the same group identifier.

13. A communication device, characterized in that: It includes a logic circuit and an input / output interface, wherein the input / output interface is used to input and / or output signals. The logic circuit is configured to execute the method according to any one of claims 1 to 6; or The logic circuit is configured to execute the method according to any one of claims 7 to 12.

14. A computer-readable storage medium, characterized in that The computer readable storage medium stores a computer program or instruction. When the computer program or instruction is executed on a computer, causing the method of any one of claims 1 to 6 to be performed; or, The method according to any one of claims 7 to 12 is performed.

15. A computer program product, characterized in that Contains instructions that, when executed on a computer, causing the method of any one of claims 1 to 6 to be performed; or, The method according to any one of claims 7 to 12 is performed.

16. A communication device, characterized in that: include: an interface unit, configured to obtain configuration information of a first radio access technology RAT, where the configuration information configures a first resource, where the first resource includes P ports, where P1 ports of the P ports are also applicable to a second RAT, where the first RAT is a RAT evolved from the second RAT, and where P and P1 are both integers; The interface unit is further configured to receive a channel state information reference signal CSI-RS through the first resource.

17. The device according to claim 16, characterized in that The first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes the P1 ports, the second CSI-RS resource includes P2 ports, P is greater than or equal to the sum of P1 and P2, At least one of a time domain position and a frequency domain position of the first CSI-RS resource and the second CSI-RS resource is different.

18. The device according to claim 17, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same number of code division multiplexing groups, and / or, The first CSI-RS resource and the second CSI-RS resource correspond to code division multiplexing of the same size.

19. The device according to claim 17 or 18, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same frequency domain density.

20. The device according to any one of claims 16 to 19, characterized in that The configuration information includes configuration information of N CSI-RS resources, where the configuration information of the N CSI-RS resources is used to configure the first resource. The sum of the number of ports included in each of the N CSI-RS resources is equal to P, and N is a positive integer.

21. The device according to claim 20, characterized in that The N CSI-RS resources correspond to the same group identifier.

22. A communication device, characterized in that: include: a processing unit, configured to determine configuration information of a first radio access technology RAT, the configuration information configuring a first resource, the first resource being used for transmission of a channel state information reference signal CSI-RS, the first resource including P ports, P1 ports of the P ports being further applicable to a second RAT, the first RAT being a RAT evolved from the second RAT, and P and P1 being positive integers; An interface unit is configured to send configuration information of the first RAT.

23. The device according to claim 22, characterized in that The first resource includes a first CSI-RS resource and a second CSI-RS resource, the first CSI-RS resource includes the P1 port, the second CSI-RS resource includes the P2 port, P is greater than or equal to the sum of P1 and P2, and at least one of the time domain position and the frequency domain position of the first CSI-RS resource and the second CSI-RS resource is different.

24. The device according to claim 23, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same number of code division multiplexing groups, and / or, The first CSI-RS resource and the second CSI-RS resource correspond to code division multiplexing of the same size.

25. The device according to claim 23 or 24, characterized in that The first CSI-RS resource and the second CSI-RS resource correspond to the same frequency domain density.

26. The device according to any one of claims 22 to 25, characterized in that The configuration information includes configuration information of N CSI-RS resources, where the configuration information of the N CSI-RS resources is used to configure the first resource. The sum of the number of ports included in each of the N CSI-RS resources is equal to P, and N is a positive integer.

27. The device according to claim 26, characterized in that The N CSI-RS resources correspond to the same group identifier.

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