Reference signal sending method and device, equipment, storage medium and program product

Abstract

The invention relates to a reference signal sending method and device, equipment, a storage medium and a program product. The method comprises: an access network device, based on a mapping relationship between N antenna ports and K NZP CSI-RS resources, bearing CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources for transmission, wherein N and K are both greater than 1, each NZP CSI-RS resource is mapped with a part of antenna ports in the N antenna ports, and the total number of the antenna ports mapped by the K NZP CSI-RS resources is equal to N. Therefore, a new CSI-RS (Channel State Information-Reference Signal) transmission mode capable of supporting CSI measurement of at most 128 antenna ports is provided.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a reference signal transmission method, apparatus, device, storage medium, and program product. Background Technology

[0002] With the development of massive MIMO (Multiple-Input Multiple-Output) technology, the number of antenna ports supported by access network equipment and user equipment (UE) is constantly increasing. The MIMO enhancement project in 3GPP release-19 explicitly supports CSI-RS (Channel State Information-Reference Signal) measurements with up to 128 antenna ports. However, the current NR (New Radio) protocol only supports CSI-RS measurements with a maximum of 32 antenna ports.

[0003] To support CSI-RS measurements with up to 128 antenna ports, it is necessary to design a new CSI-RS transmission method. Summary of the Invention

[0004] Based on this, a reference signal transmission method, apparatus, device, storage medium, and program product capable of supporting CSI measurements with up to 128 antenna ports are provided.

[0005] In a first aspect, a method for transmitting a reference signal is provided, the method comprising:

[0006] The access network device transmits the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources based on the mapping relationship between N antenna ports and K non-zero power channel state information reference signals (NZP CSI-RS resources). Here, N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0007] In one embodiment, the number of antenna ports in each of the NZP CSI-RS resource maps is N / K, and there is no overlap between the antenna ports in each of the ZP CSI-RS resource maps.

[0008] In one embodiment, the K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0009] In one embodiment, half of the antenna ports of each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0010] In one embodiment, when the N antenna ports are disposed on a single antenna panel, each of the NZP CSI-RS resources is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0011] In one embodiment, when the N antenna ports are disposed on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0012] In one embodiment, when the N antenna ports are disposed on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to a third antenna port of 1 / 2q and a fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0013] In one embodiment, N is greater than 32.

[0014] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0015] In one embodiment, the method further includes: the access network device sending a first CSI-RS resource configuration to a first terminal device (UE), the first CSI-RS resource configuration being used to instruct the first UE to perform CSI-RS measurements based on the K NZPCSI-RS resources.

[0016] In one embodiment, the method further includes: the access network device sending a second CSI-RS resource configuration to the second UE, the second CSI-RS resource configuration being used to instruct the second UE to measure CSI-RS based on the K NZP CSI-RS resources, or the second CSI-RS resource configuration being used to instruct the second UE to measure CSI-RS based on a portion of the K NZP CSI-RS resources.

[0017] Secondly, a method for transmitting a reference signal is provided, the method comprising:

[0018] The UE receives CSI-RS transmitted from N antenna ports of the access network device, wherein the CSI-RS transmitted from the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources; wherein N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0019] In one embodiment, the number of antenna ports in each of the NZP CSI-RS resource maps is N / K, and there is no overlap between the antenna ports in each of the ZP CSI-RS resource maps.

[0020] In one embodiment, the K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0021] In one embodiment, half of the antenna ports of each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0022] In one embodiment, when the N antenna ports are disposed on a single antenna panel, each of the NZP CSI-RS resources is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0023] In one embodiment, when the N antenna ports are disposed on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0024] In one embodiment, when the N antenna ports are disposed on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to a third antenna port of 1 / 2q and a fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0025] In one embodiment, N is greater than 32.

[0026] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0027] In one embodiment, the method further includes: the UE receiving a first CSI-RS resource configuration sent by the access network device, the first CSI-RS resource configuration being used to instruct CSI-RS measurement based on the K NZP CSI-RS resources.

[0028] In one embodiment, the method further includes: the UE receiving a second CSI-RS resource configuration sent by the access network device, the second CSI-RS resource configuration being used to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZPCSI-RS resources.

[0029] Thirdly, a reference signal transmitting device is provided for access network equipment, the device comprising:

[0030] The reference signal transmission module is used to transmit the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources based on the mapping relationship between N antenna ports and K NZP CSI-RS resources; wherein N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0031] In one embodiment, the number of antenna ports in each of the NZP CSI-RS resource maps is N / K, and there is no overlap between the antenna ports in each of the ZP CSI-RS resource maps.

[0032] In one embodiment, the K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0033] In one embodiment, half of the antenna ports of each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0034] In one embodiment, when the N antenna ports are disposed on a single antenna panel, each of the NZP CSI-RS resources is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0035] In one embodiment, when the N antenna ports are disposed on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0036] In one embodiment, when the N antenna ports are disposed on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to a third antenna port of 1 / 2q and a fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0037] In one embodiment, N is greater than 32.

[0038] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0039] In one embodiment, the apparatus further includes: a transmitting module; the transmitting module is configured to transmit a first CSI-RS resource configuration to a first UE, the first CSI-RS resource configuration being configured to instruct the first UE to perform CSI-RS measurements based on the K NZPCSI-RS resources.

[0040] In one embodiment, the sending module is further configured to: send a second CSI-RS resource configuration to the second UE, the second CSI-RS resource configuration being configured to instruct the second UE to perform CSI-RS measurement based on the K NZP CSI-RS resources, or the second CSI-RS resource configuration being configured to instruct the second UE to perform CSI-RS measurement based on a portion of the K NZP CSI-RS resources.

[0041] Fourthly, a reference signal transmitting apparatus is provided for use in a UE, the apparatus comprising:

[0042] A reference signal receiving module is used to receive CSI-RS transmitted from N antenna ports of an access network device. The CSI-RS transmitted from the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources. N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0043] In one embodiment, the number of antenna ports in each of the NZP CSI-RS resource maps is N / K, and there is no overlap between the antenna ports in each of the ZP CSI-RS resource maps.

[0044] In one embodiment, the K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0045] In one embodiment, half of the antenna ports of each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0046] In one embodiment, when the N antenna ports are disposed on a single antenna panel, each of the NZP CSI-RS resources is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0047] In one embodiment, when the N antenna ports are disposed on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0048] In one embodiment, when the N antenna ports are disposed on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to a third antenna port of 1 / 2q and a fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0049] In one embodiment, N is greater than 32.

[0050] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0051] In one embodiment, the apparatus further includes: a first receiving module; the first receiving module is configured to: receive a first CSI-RS resource configuration sent by the access network device, the first CSI-RS resource configuration being used to instruct CSI-RS measurement based on the K NZP CSI-RS resources.

[0052] In one embodiment, the apparatus further includes: a second receiving module; the second receiving module is configured to: receive a second CSI-RS resource configuration sent by the access network device, the second CSI-RS resource configuration being configured to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZP CSI-RS resources.

[0053] Fifthly, this application also provides an access network device, including a memory, a transceiver, and a processor:

[0054] A memory is used to store computer programs; a transceiver is used to transmit and receive data under the control of the processor; the processor is used to read the computer program in the memory and perform the following operations: based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, control the transceiver to carry the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources for transmission; wherein, N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0055] Sixthly, this application also provides a user equipment, including a memory, a transceiver, and a processor:

[0056] A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations:

[0057] The transceiver is controlled to receive CSI-RS transmitted from N antenna ports of the access network device. The CSI-RS transmitted from the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources. N and K are both greater than 1. Each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0058] In a seventh aspect, this application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements any of the steps described in the first aspect above; or, the computer program, when executed by a processor, implements any of the steps described in the second aspect above.

[0059] Eighthly, this application also provides a computer program product, including a computer program that, when executed by a processor, implements any of the steps described in the first aspect above; or, when executed by a processor, the computer program implements any of the steps described in the second aspect above.

[0060] The aforementioned reference signal transmission method, apparatus, device, storage medium, and program product, based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, transmits CSI-RS transmitted from N antenna ports on aggregated K NZP CSI-RS resources, where N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N, thereby providing a new CSI-RS transmission method capable of supporting CSI measurements with up to 128 antenna ports. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a flowchart illustrating a reference signal transmission method in one embodiment;

[0063] Figure 2 This is a schematic diagram illustrating the mapping relationship between N antenna ports and K NZP CSI-RS resources in one embodiment;

[0064] Figure 3 This is a schematic diagram of the antenna port in one embodiment;

[0065] Figure 4 This is a schematic diagram illustrating the mapping relationship between antenna ports and NZP CSI-RS resources in one embodiment;

[0066] Figure 5 This is a schematic diagram illustrating the mapping relationship between antenna ports and NZP CSI-RS resources in one embodiment;

[0067] Figure 6 This is a schematic diagram of the antenna port in another embodiment;

[0068] Figure 7 This is a schematic diagram illustrating the mapping relationship between the antenna port and NZP CSI-RS resources in another embodiment;

[0069] Figure 8 This is a schematic diagram illustrating the mapping relationship between the antenna port and NZP CSI-RS resources in another embodiment;

[0070] Figure 9This is a flowchart illustrating a reference signal transmission method in another embodiment;

[0071] Figure 10 This is a structural block diagram of a reference signal transmitting device in one embodiment;

[0072] Figure 11 This is a structural block diagram of a reference signal transmitting device in another embodiment;

[0073] Figure 12 This is a structural block diagram of a reference signal transmitting device in another embodiment;

[0074] Figure 13 This is a structural block diagram of a reference signal transmitting device in another embodiment;

[0075] Figure 14 This is an internal structure diagram of an access network device in one embodiment;

[0076] Figure 15 This is a diagram of the internal structure of a UE in one embodiment. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0078] With the development of massive MIMO (Multiple-Input Multiple-Output) technology, the number of antenna ports supported by access network equipment and user equipment (UE) is constantly increasing. The MIMO enhancement project in 3GPP release-19 explicitly supports CSI-RS (Channel State Information-Reference Signal) measurements with up to 128 antenna ports. However, the current NR (New Radio) protocol only supports CSI-RS measurements with a maximum of 32 antenna ports. To support CSI-RS measurements with up to 128 antenna ports, this application provides a new CSI-RS transmission method.

[0079] The technical solutions provided in this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, sidelink communication systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) systems, 5th Generation (5G) mobile communication systems, or NR. The 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA) networking. The technical solutions provided in this application can also be applied to future communication systems, such as 6th Generation (6G) mobile communication systems. This application does not limit these applications.

[0080] The following section first introduces the network elements involved in the embodiments of this application: access network equipment and UE.

[0081] In the embodiments of this application, the access network equipment includes, but is not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TP), or transmission and reception point (TRP) in a wireless fidelity (Wi-Fi) system, and may also be gNB or transmission point (TRP or TP) in a 5G (e.g., NR) system, or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or may also be network nodes constituting a gNB or transmission point, such as baseband unit (BBU), or distributed unit (DU), etc.

[0082] In some deployments, a gNB may include a centralized unit (CU) and a DU. For example, the CU implements some of the gNB's functions, and the DU implements some of the gNB's functions. For instance, the CU is responsible for handling non-real-time protocols and services, implementing the functions of the RRC layer and the packet data convergence protocol (PDCP) layer; the DU may include the functions of the radio link control (RLC) layer, the media access control (MAC) layer, and some functions of the physical (PHY) layer.

[0083] For example, the DU may include functions of higher layers in the PHY layer. These higher layers may include cyclic redundancy check (CRC), channel coding, rate matching, scrambling, modulation, and layer mapping; or, they may include CRC, channel coding, rate matching, scrambling, modulation, layer mapping, and precoding. Functions of lower layers in the PHY layer may be implemented by another network entity independent of the DU. These lower layers may include precoding, resource mapping, physical antenna mapping, and radio frequency (RF) functions; or, they may include resource mapping, physical antenna mapping, and RF functions. This application does not limit the functional division between higher and lower layers in the PHY layer. When the functions of lower layers in the PHY layer can be implemented by another network entity independent of the DU, the DU sending data or information to other communication devices (e.g., UE, core network equipment) can be understood as the DU performing functions of the RLC layer, MAC layer, and some functions of the PHY layer. For example, after the DU completes the functions of the RLC layer, MAC layer, as well as cyclic redundancy check, channel coding, rate matching, scrambling, modulation, and layer mapping, the remaining functions of mapping and transmission on physical resources are performed by a network entity independent of the DU that performs the functions of the lower layers of the PHY layer.

[0084] Access network equipment provides services to cells. UEs communicate with cells through transmission resources (e.g., frequency domain resources, or spectrum resources) allocated by the access network equipment. These cells can belong to macro base stations (e.g., macro eNB or macro gNB) or to base stations corresponding to small cells (sma1 1ce11). Small cells can include: metrocell1, microcell1, picocell1, femtocell1, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0085] In the embodiments of this application, the UE may also be referred to as an access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.

[0086] A User Equipment (UE) can be a device that provides voice / data connectivity to a user, such as a handheld device or in-vehicle device with wireless connectivity. Currently, some examples of UEs include: mobile phones, tablets, computers with wireless transceiver capabilities (such as laptops and PDAs), mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, drones, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, and personal digital assistants (PDAs). The following are examples of terminal devices: assistant (PDA), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in future evolved public terrestrial mobile networks (PLN).

[0087] Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices; they achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined, wearable smart devices include those with comprehensive functions, large sizes, and the ability to perform complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses. They also include devices focused on a specific application function that require the use of other devices, such as smart bracelets and smart jewelry for vital sign monitoring.

[0088] Furthermore, the UE can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of future information technology development, its main technical characteristic being the connection of objects to networks via communication technologies, thereby achieving intelligent networks that enable human-machine and machine-to-machine interconnection. IoT technology, for example, can achieve massive connectivity, deep coverage, and low power consumption at the terminal through narrowband (NB) technology.

[0089] In addition, the UE may also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (for some terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.

[0090] It should be understood that this application does not limit the specific form of the access network equipment and the UE.

[0091] To facilitate readers' understanding of the technical solutions provided in this application, the basic concepts involved in this application will be briefly explained below.

[0092] 1. RS and CSI-RS.

[0093] RS, or Reference Signal, can be used for channel measurement, channel estimation, etc. CSI-RS is a type of reference signal, which is generally sent from the access network equipment to the UE. The UE can obtain the CSI by receiving and measuring the CSI-RS. Then, the UE can feed back the CSI to the access network equipment to assist the access network equipment in codebook selection.

[0094] 2. Antenna port.

[0095] An antenna port, or simply a port, is a transmitting antenna that is recognized by the receiving device or a spatially distinguishable transmitting antenna. One antenna port can be configured for each virtual antenna, and each virtual antenna can be a weighted combination of multiple physical antennas. The antenna port referred to in this application can be understood as a CSI-RS port, meaning the antenna port for transmitting CSI-RS.

[0096] 3. CSI-RS resource configuration (CSI resource setting).

[0097] One possible design is that the access network device can send CSI-RS resource configuration to the UE via RRC (Radio Resource Control) messages. Each CSI resource setting can include S (S≥1, and S is an integer) CSI-RS resource sets, and each CSI-RS resource set can include K (K≥1, and K is an integer) non-zero power (NZP) CSI-RS resources. The access network device can send CSI-RS through K NZP CSI-RS resources, and the UE can receive CSI-RS on these K NZP CSI-RS resources.

[0098] In one exemplary embodiment, such as Figure 1 As shown, a reference signal transmission method is provided. Taking the application of this method to an access network device as an example, the method includes the following steps:

[0099] Step 101: Based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, the access network device transmits the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources.

[0100] Where N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N. In other words, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the union of the antenna ports mapped by the K NZP CSI-RS resources is the N antenna ports. In an optional embodiment of this application, each NZP CSI-RS resource is used to carry the CSI-RS transmitted by its mapped antenna port.

[0101] In an optional embodiment of this application, the K NZP CSI-RS resources belong to the same CSI-RS resource set. In an optional embodiment of this application, each CSI-RS resource set may include X groups of aggregated resource groups consisting of K aggregated NZP CSI-RS resources. In other words, in an optional embodiment of this application, each CSI-RS resource set may include X*K NZP CSI-RS resources, where X is a positive integer greater than or equal to 1.

[0102] In protocols that support a maximum of 32 antenna ports for CSI-RS measurements (hereinafter referred to as existing protocols), each CSI-RS resource set can contain K NZP CSI-RS resources. However, each NZP CSI-RS resource maps to all antenna ports. In other words, assuming the number of antenna ports is 32, each of the K NZP CSI-RS resources maps to 32 antenna ports. That is, each NZP CSI-RS resource carries CSI-RS transmitted by 32 antenna ports. The UE can perform CSI-RS measurements on 32 antenna ports based on the CSI-RS carried on any one of the K NZP CSI-RS resources and report the CSI to the access network equipment.

[0103] In the scheme provided in this application embodiment that can support CSI-RS measurement of up to 128 antenna ports, each NZPCSI-RS resource is mapped to a portion of the N antenna ports, and the union of the antenna ports mapped by the K NZP CSI-RS resources is the N antenna ports. Each NZP CSI-RS resource is used to carry the CSI-RS transmitted by its mapped antenna port. Therefore, the UE needs to perform CSI-RS measurement of N antenna ports based on the CSI-RS carried on all K NZP CSI-RS resources and report the CSI to the access network device, which is different from the existing protocol.

[0104] In an optional embodiment of this application, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports of each NZP CSI-RS resource mapping. In other words, the number of antenna ports in each NZP CSI-RS resource mapping is equal, and there are no identical antenna ports among the antenna ports of each NZP CSI-RS resource mapping.

[0105] Assuming the port numbers of the N antenna ports are from 3000 to 3000+N-1, please refer to... Figure 2 It shows the mapping relationship between the N antenna ports and the K NZP CSI-RS resources, such as Figure 2 As shown, each NZP CSI-RS resource is mapped to N / K antenna ports.

[0106] In an optional embodiment of this application, the value of N can be greater than 32. Optionally, the value of N can be 48, 64, or 128.

[0107] When N is 48, three NZP CSI-RS resource aggregation methods are supported: In the first aggregation method, K is 2, that is, 2 NZP CSI-RS resources are aggregated, and each NZP CSI-RS resource is mapped to 24 antenna ports; in the second aggregation method, K is 3, that is, 3 NZP CSI-RS resources are aggregated, and each NZP CSI-RS resource is mapped to 16 antenna ports; in the third aggregation method, K is 4, that is, 4 NZP CSI-RS resources are aggregated, and each NZP CSI-RS resource is mapped to 12 antenna ports.

[0108] With N set to 64, two NZP CSI-RS resource aggregation methods are supported: In the first aggregation method, K is set to 2, meaning that two NZP CSI-RS resources are aggregated, and each NZP CSI-RS resource is mapped to 32 antenna ports. In the second aggregation method, K is set to 4, meaning that four NZP CSI-RS resources are aggregated, and each NZP CSI-RS resource is mapped to 16 antenna ports.

[0109] When N is 128, one NZP CSI-RS resource aggregation method is supported: In this aggregation method, K is 4, that is, 4 NZP CSI-RS resources are aggregated, and each NZP CSI-RS resource is mapped to 32 antenna ports.

[0110] Please refer to Table 1, which shows the different values ​​of K and the different values ​​of the number of antenna ports for each NZP CSI-RS resource mapping when N takes different values.

[0111] Table 1

[0112]

[0113] Here, "Number of CSI-RS antenna ports" refers to the number of antenna ports N, "Number of CSI-RS ports in each resource" refers to the number of antenna ports N / K mapped to each NZP CSI-RS resource, and "Number of resources in one resource set" refers to the number of NZP CSI-RS resources K.

[0114] Existing protocols impose limitations on the number of CSI-RS resources that can be configured in the CSI-RS resource set used for channel measurements, as well as the number of antenna ports mapped to each CSI-RS resource. The specific description of the existing protocols is as follows:

[0115] When performing CSI reporting, more than one CSI-RS resource can be configured for CSI reporting based on CRI (CS-RS Resource Indicator). If the number of CSI-RS resources configured in the CSI-RS resource set is 2, the number of CSI-RS ports mapped to each CSI-RS resource shall not exceed 16. If the number of CSI-RS resources configured in the CSI-RS resource set is greater than 2 and less than or equal to 8, the number of CSI-RS ports mapped to each CSI-RS resource shall not exceed 8.

[0116] Clearly, this limitation of the existing protocol cannot support CSI-RS measurements with a maximum of 128 antenna ports. Therefore, the existing protocol needs to be enhanced and modified. Specific modifications could include:

[0117] 1) Remove the restriction on the number of CSI-RS ports mapped to each CSI-RS resource in the CSI-RS resource set; that is, the modified protocol content can be:

[0118] More than one CSI-RS resource can be configured for CSI measurement reporting; the number of CSI-RS resources that can be configured shall not exceed 8.

[0119] 2) Expand the limit on the number of CSI-RS ports per CSI-RS resource in the CSI-RS resource set; that is, the modified protocol content can be:

[0120] More than one CSI-RS resource can be configured for CSI reporting. If the number of CSI-RS resources configured in the CSI-RS resource set is 2, the number of CSI-RS ports mapped to each CSI-RS resource shall not exceed N11. If the number of CSI-RS resources configured in the CSI-RS resource set is greater than 2 and less than or equal to 8, the number of CSI-RS ports mapped to each CSI-RS resource shall not exceed N22. The values ​​of N11 and N22 must satisfy: N11>=32, N22>=32.

[0121] 3) Other feasible solutions that satisfy the values ​​in Table 1.

[0122] In an optional embodiment of this application, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0123] In the existing protocol, the Type I single-antenna panel codebook structure indicates that half of the CSI-RS ports correspond to one polarization (horizontal or vertical), while the other half of the CSI-RS ports correspond to another polarization (vertical or horizontal).

[0124] Because in the existing protocol, each NZP CSI-RS resource maps to all antenna ports, half of the antenna ports mapped by each NZPCSI-RS resource are polarized in a horizontal polarization mode, and the remaining half are polarized in a vertical polarization mode.

[0125] Therefore, in order to ensure that the NZP CSI-RS resources in this embodiment can still be reused by UEs that support existing protocols for CSI measurements of up to 32 antenna ports, it is considered that half of the antenna ports mapped by each of the K NZP CSI-RS resources can be horizontally polarized and the remaining half can be vertically polarized, so as to maintain consistency with the NZP CSI-RS resources in existing protocols.

[0126] In an optional embodiment of this application, when N antenna ports are configured on a single antenna panel, each NZPCSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0127] Since the antenna ports in the first half of the Type I single antenna panel have the same polarization and the antenna ports in the second half have a different polarization, the antenna ports in the first half of the antenna panel are equally distributed to K NZP CSI-RS, and the antenna ports in the second half of the antenna panel are equally distributed to K NZP CSI-RS. In this way, it can be ensured that half of the antenna ports mapped by each NZP CSI-RS resource have horizontal polarization and the other half have vertical polarization.

[0128] Based on this, a feasible Type I single-antenna panel NZP CSI-RS resource port mapping rule can be expressed mathematically as follows:

[0129] .

[0130] in, For the first The antenna port number mapped to each NZP CSI-RS resource is k=0,1,…,K-1, where K is the number of NZP CSI-RS resources, s is the orthogonal sequence index within the CDM (Code Division Multiplexing) group of the NZP CSI-RS resource, with values ​​{0,1,…,L-1}, L is the number of antenna ports contained in each CDM group of the NZP CSI-RS resource, and N is the number of antenna ports mapped to each NZP CSI-RS resource (in other words, in this formula, the total number of antenna ports is N*K, and each NZP CSI-RS resource is mapped to N antenna ports).

[0131] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0132] In Type I multi-antenna panels, each antenna panel includes the same number of antenna ports. Furthermore, the antenna ports in the first half of each antenna panel have the same polarization, while the antenna ports in the second half have a different polarization.

[0133] Specifically, for a multi-antenna panel arranged in (M, N1, N2), M is the number of antenna panels, N1 is the number of rows of antenna elements in each antenna panel, and N2 is the number of rows of antenna elements in each antenna panel. Each antenna element includes two antenna ports with different polarizations. Antenna ports with port numbers 0~N1N2-1, 2N1N2~3N1N2-1, ..., 2(M-1)N1N2~(2M-1)N1N2-1 have the same polarization. Antenna ports with port numbers N1N2~2N1N2-1, 3N1N2~4N1N2-1, ..., (2M-1)N1N2~2MN1N2-1 have another polarization. Antenna ports with port numbers 0~2N1N2-1 belong to antenna panel 1, ..., 2(M-1)~2MN1N2-1 belong to antenna panel M.

[0134] Based on the above rules, if the number of antenna panels M is large and the number of NZP CSI-RS resources K is small, and M=pK, then each NZP CSI-RS resource can be assigned to the antenna ports in p antenna panels. Since in Type I multi-antenna panels, each antenna panel includes the same number of antenna ports, and the first half of the antenna ports in each antenna panel have the same polarization mode, while the second half of the antenna ports have a different polarization mode, it can be guaranteed that half of the antenna ports mapped by each NZP CSI-RS resource have horizontal polarization mode, and the remaining half have vertical polarization mode.

[0135] For example, if the number of antenna panels M is 4 and the number of NZP CSI-RS resources K is 2, then each NZP CSI-RS resource can be assigned to an antenna port in one of the two antenna panels. Since each antenna panel includes the same number of antenna ports, and the first half of the antenna ports in each antenna panel have the same polarization mode, while the second half of the antenna ports have a different polarization mode, it can be guaranteed that half of the antenna ports mapped by each NZP CSI-RS resource have horizontal polarization mode, and the remaining half have vertical polarization mode.

[0136] The mapping rule described above can be expressed mathematically as follows:

[0137]

[0138] in, For the first The antenna port number mapped to each NZP CSI-RS resource is k=0,1,…,K-1, where K is the number of NZP CSI-RS resources, s is the orthogonal sequence index within the CDM group of the NZP CSI-RS resource, with values ​​{0,1,…,L-1}, L is the number of antenna ports contained in each CDM group of the NZP CSI-RS resource, and N is the number of antenna ports mapped to each NZP CSI-RS resource (in other words, in this formula, the total number of antenna ports is N*K, and each NZP CSI-RS resource is mapped to N antenna ports).

[0139] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0140] Based on the antenna port setting rules in the above multi-antenna panels, if the number of antenna panels M is small and the number of NZP CSI-RS resources K is large, then the antenna ports in each antenna panel cannot be completely allocated to a certain NZP CSI-RS resource mapping. Instead, they need to be allocated to q NZP CSI-RS resource mappings. Since the number of antenna panels is M, the M antenna panels can be allocated to a total of q*M NZP CSI-RS resources, that is, K NZP CSI-RS resources.

[0141] For each NZP CSI-RS resource, it can be assigned to an antenna port mapping of 1 / q in an antenna panel. To ensure that half of the antenna ports mapped to each NZP CSI-RS resource are horizontally polarized and the remaining half are vertically polarized, each NZPCSI-RS resource can be assigned to a third antenna port mapping of 1 / 2q in an antenna panel and a fourth antenna port mapping of 1 / 2q in the same antenna panel.

[0142] The above mapping rules can be expressed mathematically as follows:

[0143] ;

[0144] ;

[0145] .

[0146] in, For the first The antenna port number mapped to each NZP CSI-RS resource is k=0,1,…,K-1, where K is the number of NZP CSI-RS resources, s is the orthogonal sequence index within the CDM group of the NZP CSI-RS resource, with values ​​{0,1,…,L-1}, L is the number of antenna ports contained in each CDM group of the NZP CSI-RS resource, and N is the number of antenna ports mapped to each NZP CSI-RS resource (in other words, in this formula, the total number of antenna ports is N*K, and each NZP CSI-RS resource is mapped to N antenna ports). For the first The antenna panel number mapped to each NZP CSI-RS resource. For the first The resource number of each NZP CSI-RS resource in the corresponding mapped antenna panel, M is the number of antenna panels, N1 is the number of rows of antenna elements in each antenna panel, N2 is the number of rows of antenna elements in each antenna panel, and the antenna element includes two antenna ports with different polarization methods.

[0147] To facilitate readers' understanding of the above antenna port mapping rules, the following embodiments of this application will illustrate the antenna port mapping rules with examples and illustrations:

[0148] Please refer to Figure 3 It shows 64 antenna ports arranged on a single antenna panel. Assuming the use of two aggregated NZP CSI-RS resources, each NZP CSI-RS resource is mapped to 32 antenna ports; please refer to [reference needed]. Figure 4 According to the antenna port mapping rules for a single antenna panel described above, NZP CSI-RS resource 1 is mapped to antenna ports numbered 0-15 (first antenna ports) and to antenna ports numbered 32-47 (second antenna ports). Similarly, NZPCSI-RS resource 2 is mapped to antenna ports numbered 16-31 (first antenna ports) and to antenna ports numbered 48-63 (second antenna ports). Please refer to [reference needed]. Figure 5 It shows the mapping relationship between NZP CSI-RS resources and antenna ports (assuming that each NZP CSI-RS resource includes 4 CDM groups of type CDM8-FD2-TD4), where, Figure 5In this context, PRB stands for Physical Resource Blocks, slot refers to a time slot, DMRS stands for Demodulation Reference Signal, PDCCH stands for Physical Downlink Control Channel, and CRS-RS resource is an abbreviation for NZP CSI-RS resource.

[0149] Please refer to Figure 6 It shows 64 antenna ports, which are arranged on 2 antenna panels. Assuming the use of 4 aggregated NZP CSI-RS resources, each NZP CSI-RS resource is mapped to 16 antenna ports, q=4 / 2=2.

[0150] Please refer to Figure 7 According to the antenna port mapping rules for multi-antenna panels described above, since the number of antenna panels M=2 is relatively small, while the number of NZP CSI-RS resources K=4 is relatively large, the antenna ports in each antenna panel cannot be completely allocated to a single NZP CSI-RS resource mapping. Instead, they need to be allocated to q=2 NZP CSI-RS resource mappings.

[0151] For each NZP CSI-RS resource, it can be assigned to an antenna port mapping of 1 / q (1 / 2) in an antenna panel. In order to ensure that half of the antenna ports mapped by each NZP CSI-RS resource are horizontally polarized and the remaining half are vertically polarized, for each NZPCSI-RS resource, it can be assigned to a third antenna port mapping of 1 / 2q (1 / 4) in an antenna panel and a fourth antenna port mapping of 1 / 2q (1 / 4) in the same antenna panel.

[0152] Specifically, NZP CSI-RS resource 1 is mapped to 16 antenna ports in antenna panel 1, with port numbers 0-7 (third antenna port) and port numbers 16-23 (fourth antenna port); NZP CSI-RS resource 2 is mapped to 16 antenna ports in antenna panel 1, with port numbers 8-15 (third antenna port) and port numbers 24-31 (fourth antenna port); NZP CSI-RS resource 3 is mapped to 16 antenna ports in antenna panel 2, with port numbers 32-39 (third antenna port) and port numbers 48-55 (fourth antenna port); and NZP CSI-RS resource 4 is mapped to 16 antenna ports in antenna panel 2, with port numbers 40-47 (third antenna port) and port numbers 56-63 (fourth antenna port).

[0153] Please refer to Figure 8 It shows the mapping relationship between NZP CSI-RS resources and antenna ports (assuming that each NZP CSI-RS resource includes 4 CDM groups of type CDM4-FD2-TD2).

[0154] In an optional embodiment of this application, the CSI-RS carried by the K NZP CSI-RS resources can be shared by multiple users. These multiple users can include UEs supporting CSI-RS measurements with up to 128 antenna ports and / or UEs supporting CSI-RS measurements with up to 32 antenna ports.

[0155] In one optional scenario, the multiple users may include: UE1, which supports CSI-RS measurement with up to 128 antenna ports, and UE2, which supports CSI-RS measurement with up to 32 antenna ports. UE1 can measure CSI-RS carried by all or part of the K NZP CSI-RS resources, and UE2 can measure CSI-RS carried by part of the K NZP CSI-RS resources.

[0156] For example, if UE1 needs to perform CSI-RS measurements on 128 antenna ports and UE2 needs to perform CSI-RS measurements on 32 antenna ports, and there are 4 NZP CSI-RS resources, with each NZP CSI-RS resource mapping to 32 antenna ports, then UE1 can measure the CSI-RS carried by these 4 NZP CSI-RS resources to report CSI to the access network equipment. UE2 can measure the CSI-RS carried by one of these 4 NZP CSI-RS resources to report CSI to the access network equipment.

[0157] In another alternative scenario, the multiple users may include: UE1, which supports CSI-RS measurement with up to 128 antenna ports, and UE3, which supports CSI-RS measurement with up to 128 antenna ports, wherein UE1 can measure CSI-RS carried by all or some of the K NZP CSI-RS resources, and UE3 can measure CSI-RS carried by all or some of the K NZP CSI-RS resources.

[0158] For example, if UE1 needs to perform CSI-RS measurements on 128 antenna ports and UE3 needs to perform CSI-RS measurements on 64 antenna ports, and the number of NZP CSI-RS resources is 4, with each NZP CSI-RS resource mapping to 32 antenna ports, then UE1 can measure the CSI-RS carried by these 4 NZP CSI-RS resources to report CSI to the access network equipment. UE2 can measure the CSI-RS carried by 2 of the 4 NZP CSI-RS resources to report CSI to the access network equipment.

[0159] It should be noted that the two optional scenarios mentioned above are merely illustrative. In practical applications, the number of multiple users can be 2 or more. These multiple users can support UEs with up to 128 antenna ports for CSI measurements and / or support UEs with up to 32 antenna ports for CSI measurements.

[0160] To enable multiple users to share the CSI-RS carried by the K NZP CSI-RS resources, in an optional embodiment of this application, the access network device may send a first CSI-RS resource configuration to a first UE, wherein the first CSI-RS resource configuration is used to instruct the first UE to measure the CSI-RS based on the K NZP CSI-RS resources. Furthermore, the access network device may send a second CSI-RS resource configuration to a second UE, wherein the second CSI-RS resource configuration is used to instruct the second UE to measure the CSI-RS based on the K NZP CSI-RS resources, or, the second CSI-RS resource configuration is used to instruct the second UE to measure the CSI-RS based on a portion of the K NZP CSI-RS resources.

[0161] In one exemplary embodiment, such as Figure 9 As shown, a reference signal transmission method is provided. Taking the application of this method to a UE as an example, the method includes the following steps:

[0162] Step 901: The UE receives CSI-RS transmitted from the N antenna ports of the access network equipment.

[0163] The CSI-RS transmitted from N antenna ports is based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources, and is carried on K NZP CSI-RS resources. Both N and K are greater than 1. Each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0164] The mapping method between N antenna ports and K NZP CSI-RS resources has been described in detail in the above-described embodiments, and will not be repeated here in the embodiments of this application.

[0165] In an optional embodiment of this application, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZP CSI-RS resource mapping.

[0166] In an optional embodiment of this application, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0167] In an optional embodiment of this application, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0168] In an optional embodiment of this application, when N antenna ports are configured on a single antenna panel, each NZPCSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0169] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0170] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0171] In an optional embodiment of this application, N is greater than 32.

[0172] In an optional embodiment of this application, when N is 48, the value of K includes one of 2, 3 and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0173] In an optional embodiment of this application, the UE may receive CSI-RS resource configuration sent by the access network device to measure CSI-RS according to the received CSI-RS resource configuration.

[0174] Optionally, the UE may receive a first CSI-RS resource configuration sent by the access network device, the first CSI-RS resource configuration being used to instruct CSI-RS to be measured based on K NZP CSI-RS resources.

[0175] Optionally, the UE may receive a second CSI-RS resource configuration sent by the access network device. The second CSI-RS resource configuration is used to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZP CSI-RS resources.

[0176] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0177] Based on the same inventive concept, this application also provides a reference signal transmitting apparatus for implementing the reference signal transmitting method described above. The solution provided by this apparatus is similar to the implementation described in the above method; therefore, the specific limitations in one or more reference signal transmitting apparatus embodiments provided below can be found in the limitations of the reference signal transmitting method described above, and will not be repeated here.

[0178] In one exemplary embodiment, such as Figure 10 As shown, a reference signal transmitting device 1000 is provided for access network equipment, comprising:

[0179] The reference signal transmission module 1001 is used to transmit the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources; wherein, N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0180] In an optional embodiment of this application, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZP CSI-RS resource mapping.

[0181] In an optional embodiment of this application, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0182] In an optional embodiment of this application, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0183] In an optional embodiment of this application, when N antenna ports are configured on a single antenna panel, each NZPCSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0184] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0185] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0186] In an optional embodiment of this application, N is greater than 32.

[0187] In an optional embodiment of this application, when N is 48, the value of K includes one of 2, 3 and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0188] Please refer to Figure 11 It shows another reference signal transmitting device 1100, which, in addition to including the modules in the reference signal transmitting device 1000, optionally includes a transmitting module 1002.

[0189] The sending module 1002 is used to send a first CSI-RS resource configuration to the first UE, wherein the first CSI-RS resource configuration is used to instruct the first UE to perform CSI-RS measurement based on K NZP CSI-RS resources.

[0190] In an optional embodiment of this application, the sending module 1002 is further configured to: send a second CSI-RS resource configuration to the second UE, wherein the second CSI-RS resource configuration is used to instruct the second UE to measure CSI-RS based on K NZP CSI-RS resources, or the second CSI-RS resource configuration is used to instruct the second UE to measure CSI-RS based on a portion of the K NZP CSI-RS resources.

[0191] In one exemplary embodiment, such as Figure 12 As shown, a reference signal transmitting device 1200 is provided for a UE, including: a reference signal receiving module 1201.

[0192] The reference signal receiving module 1201 is used to receive CSI-RS transmitted from N antenna ports of the access network device. The CSI-RS transmitted from the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources. N and K are both greater than 1. Each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0193] In an optional embodiment of this application, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZP CSI-RS resource mapping.

[0194] In an optional embodiment of this application, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0195] In an optional embodiment of this application, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, and the remaining half are vertically polarized.

[0196] In an optional embodiment of this application, when N antenna ports are configured on a single antenna panel, each NZPCSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0197] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0198] In an optional embodiment of this application, when N antenna ports are set on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0199] In an optional embodiment of this application, N is greater than 32.

[0200] In an optional embodiment of this application, when N is 48, the value of K includes one of 2, 3 and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0201] Please refer to Figure 13 It shows another reference signal transmitting device 1300, which, in addition to including the modules in the reference signal transmitting device 1200, optionally includes a first receiving module 1202 and a second receiving module 1203.

[0202] The first receiving module 1202 is used to receive a first CSI-RS resource configuration sent by the access network device. The first CSI-RS resource configuration is used to instruct CSI-RS to be measured based on K NZP CSI-RS resources.

[0203] The second receiving module 1203 is used to receive the second CSI-RS resource configuration sent by the access network device. The second CSI-RS resource configuration is used to instruct the second UE to perform CSI-RS measurement based on a portion of the K NZP CSI-RS resources.

[0204] Each module in the aforementioned reference signal transmitting device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in the access network device, or stored in software in the memory of the access network device, so that the processor can call and execute the operations corresponding to each module.

[0205] Figure 14 This is a schematic diagram of the structure of the access network device provided in the embodiments of this application. Figure 14 The access network device 1400 shown includes at least one processor 1401 and a memory 1402. The various components in the access network device 1400 are coupled together via a bus system 1405. It is understood that the bus system 1405 is used to implement communication between these components. In addition to a data bus, the bus system 1405 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in... Figure 14 Various buses are designated as bus system 1405. Additionally, embodiments of this application also include a transceiver 1406, which may consist of multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.

[0206] It is understood that the memory 1402 in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1402 described in this application embodiment is intended to include, but is not limited to, these and any other suitable types of memory.

[0207] In some implementations, memory 1402 stores elements such as executable modules or data structures, or subsets thereof, or extended sets thereof: operating system 14021. Operating system 14021 includes various system programs, such as a framework layer, core library layer, driver layer, etc., used to implement various basic business functions and handle hardware-based tasks.

[0208] Some or all of the methods disclosed in the embodiments of this application can be applied to processor 1401, implemented by processor 1401, or implemented by processor 1401 in conjunction with other components (e.g., transceivers). Processor 1401 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above methods can be completed by the integrated logic circuit of the hardware in processor 1401 or by instructions in the form of software. The processor 1401 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 1402. Processor 1401 reads the information in memory 1402 and, in conjunction with its hardware, completes the steps of the above method.

[0209] It is understood that the embodiments described in this application can be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or combinations thereof.

[0210] For software implementation, the technology described in the embodiments of this application can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described in the embodiments of this application. The software code can be stored in memory and executed by processor 1401. The memory can be implemented in processor 1401 or external to processor 1401.

[0211] In one embodiment, processor 1401 is configured to read a computer program in memory 1402 and perform the following operations: based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, control transceiver 1406 to transmit CSI-RS transmitted from N antenna ports on aggregated K NZP CSI-RS resources; wherein N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0212] In one embodiment, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZPCSI-RS resource mapping.

[0213] In one embodiment, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0214] In one embodiment, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, while the remaining half are vertically polarized.

[0215] In one embodiment, with N antenna ports configured on a single antenna panel, each NZP CSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0216] In one embodiment, when N antenna ports are set on M antenna panels and M=pK, each NZPCSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0217] In one embodiment, with N antenna ports disposed on M antenna panels and K=qM, each NZPCSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0218] In one embodiment, N is greater than 32.

[0219] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0220] In one embodiment, the processor 1401 is further configured to: control the transceiver 1406 to send a first CSI-RS resource configuration to the first UE, the first CSI-RS resource configuration being used to instruct the first UE to perform CSI-RS measurements based on K NZP CSI-RS resources.

[0221] In one embodiment, the processor 1401 is further configured to: control the transceiver 1406 to send a second CSI-RS resource configuration to the second UE, the second CSI-RS resource configuration being configured to instruct the second UE to measure CSI-RS based on K NZP CSI-RS resources, or the second CSI-RS resource configuration being configured to instruct the second UE to measure CSI-RS based on a portion of the K NZP CSI-RS resources.

[0222] In one embodiment, a UE is provided, see Figure 15 . Figure 15 This is a schematic diagram of the structure of the UE provided in the embodiments of this application. Figure 15 The illustrated UE1500 includes at least one processor 1501, a memory 1502, at least one network interface 1504, and a user interface 1503. The various components in the UE1500 are coupled together via a bus system 1505. It is understood that the bus system 1505 is used to implement communication between these components. In addition to a data bus, the bus system 1505 also includes a power bus, a control bus, and a status signal bus. However, for clarity, ... Figure 15Various buses are designated as bus system 1505. Additionally, embodiments of this application also include a transceiver 1506, which may consist of multiple components, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.

[0223] The user interface 1503 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0224] It is understood that the memory 1502 in the embodiments of this application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, or flash memory. The volatile memory may be random access memory used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced synchronous dynamic random access memory, synchronous linked dynamic random access memory, and direct memory bus random access memory. The memory 1502 of the systems and methods described in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0225] In some implementations, memory 1502 stores elements, executable modules or data structures, or subsets thereof, or extended sets thereof: operating system 15021 and application program 15022.

[0226] The operating system 15021 includes various system programs, such as the framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 15022 includes various applications, such as a media player and a browser, used to implement various application functions. Programs implementing the methods of this application embodiment can be included in application program 15022.

[0227] The methods disclosed in the above embodiments of this application can also be applied to, or implemented by, the processor 1501, or implemented by the processor 1501 in conjunction with other components (e.g., a transceiver). The processor 1501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in the processor 1501 or by instructions in the form of software. The processor 1501 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 1502. Processor 1501 reads the information in memory 1502 and, in conjunction with its hardware, completes the steps of the above method.

[0228] It is understood that the embodiments described in this application can be implemented using hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits, digital signal processors, digital signal processing devices, programmable logic devices, field-programmable gate arrays, general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in this application, or combinations thereof.

[0229] For software implementation, the technology described in the embodiments of this application can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described in the embodiments of this application. The software code can be stored in memory and executed by processor 1501. The memory can be implemented in processor 1501 or external to processor 1501.

[0230] In one embodiment, processor 1501 is configured to read a computer program from memory 1502 and perform the following operations:

[0231] The transceiver 1506 receives CSI-RS transmitted from N antenna ports of the access network equipment. The CSI-RS transmitted from the N antenna ports are carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources. N and K are both greater than 1. Each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0232] In one embodiment, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZPCSI-RS resource mapping.

[0233] In one embodiment, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0234] In one embodiment, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, while the remaining half are vertically polarized.

[0235] In one embodiment, with N antenna ports configured on a single antenna panel, each NZP CSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0236] In one embodiment, when N antenna ports are set on M antenna panels and M=pK, each NZPCSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0237] In one embodiment, with N antenna ports disposed on M antenna panels and K=qM, each NZPCSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0238] In one embodiment, N is greater than 32.

[0239] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0240] In one embodiment, the processor 1501 is further configured to: control the transceiver 1506 to receive a first CSI-RS resource configuration sent by the access network device, the first CSI-RS resource configuration being used to instruct CSI-RS to be measured based on K NZP CSI-RS resources.

[0241] In one embodiment, the processor 1501 is further configured to: control the transceiver 1506 to receive a second CSI-RS resource configuration sent by the access network device, the second CSI-RS resource configuration being used to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZP CSI-RS resources.

[0242] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0243] Based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, the CSI-RS transmitted by the N antenna ports is carried on the aggregated K NZP CSI-RS resources for transmission; where N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0244] In one embodiment, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZPCSI-RS resource mapping.

[0245] In one embodiment, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0246] In one embodiment, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, while the remaining half are vertically polarized.

[0247] In one embodiment, with N antenna ports configured on a single antenna panel, each NZP CSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0248] In one embodiment, when N antenna ports are set on M antenna panels and M=pK, each NZPCSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0249] In one embodiment, with N antenna ports disposed on M antenna panels and K=qM, each NZPCSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0250] In one embodiment, N is greater than 32.

[0251] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0252] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: sending a first CSI-RS resource configuration to a first UE, the first CSI-RS resource configuration being used to instruct the first UE to measure CSI-RS based on K NZP CSI-RS resources.

[0253] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: sending a second CSI-RS resource configuration to the second UE, the second CSI-RS resource configuration being used to instruct the second UE to measure CSI-RS based on K NZP CSI-RS resources, or the second CSI-RS resource configuration being used to instruct the second UE to measure CSI-RS based on a portion of the K NZP CSI-RS resources.

[0254] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0255] The system receives CSI-RS transmitted from N antenna ports of the access network device. The CSI-RS transmitted from the N antenna ports are carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources. N and K are both greater than 1. Each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0256] In one embodiment, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZPCSI-RS resource mapping.

[0257] In one embodiment, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0258] In one embodiment, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, while the remaining half are vertically polarized.

[0259] In one embodiment, with N antenna ports configured on a single antenna panel, each NZP CSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0260] In one embodiment, when N antenna ports are set on M antenna panels and M=pK, each NZPCSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0261] In one embodiment, with N antenna ports disposed on M antenna panels and K=qM, each NZPCSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0262] In one embodiment, N is greater than 32.

[0263] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0264] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: receiving a first CSI-RS resource configuration sent by the access network device, the first CSI-RS resource configuration being used to instruct CSI-RS to be measured based on K NZP CSI-RS resources.

[0265] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: receiving a second CSI-RS resource configuration sent by the access network device, the second CSI-RS resource configuration being used to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZP CSI-RS resources.

[0266] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0267] Based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, the CSI-RS transmitted by the N antenna ports is carried on the aggregated K NZP CSI-RS resources for transmission; where N and K are both greater than 1, each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0268] In one embodiment, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZPCSI-RS resource mapping.

[0269] In one embodiment, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0270] In one embodiment, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, while the remaining half are vertically polarized.

[0271] In one embodiment, with N antenna ports configured on a single antenna panel, each NZP CSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0272] In one embodiment, when N antenna ports are set on M antenna panels and M=pK, each NZPCSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0273] In one embodiment, with N antenna ports disposed on M antenna panels and K=qM, each NZPCSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0274] In one embodiment, N is greater than 32.

[0275] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0276] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: sending a first CSI-RS resource configuration to a first UE, the first CSI-RS resource configuration being used to instruct the first UE to measure CSI-RS based on K NZP CSI-RS resources.

[0277] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: sending a second CSI-RS resource configuration to the second UE, the second CSI-RS resource configuration being used to instruct the second UE to measure CSI-RS based on K NZP CSI-RS resources, or the second CSI-RS resource configuration being used to instruct the second UE to measure CSI-RS based on a portion of the K NZP CSI-RS resources.

[0278] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0279] The system receives CSI-RS transmitted from N antenna ports of the access network device. The CSI-RS transmitted from the N antenna ports are carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources. N and K are both greater than 1. Each NZP CSI-RS resource is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

[0280] In one embodiment, the number of antenna ports in each NZP CSI-RS resource mapping is N / K, and there is no overlap between the antenna ports in each ZPCSI-RS resource mapping.

[0281] In one embodiment, K NZP CSI-RS resources belong to the same CSI-RS resource set.

[0282] In one embodiment, half of the antenna ports in each NZP CSI-RS resource mapping are horizontally polarized, while the remaining half are vertically polarized.

[0283] In one embodiment, with N antenna ports configured on a single antenna panel, each NZP CSI-RS resource is mapped to N / 2K first antenna ports and N / 2K second antenna ports; wherein the port number of the first antenna port is in the first half of the port numbers of the N antenna ports, and the port number of the second antenna port is in the last half of the port numbers of the N antenna ports.

[0284] In one embodiment, when N antenna ports are set on M antenna panels and M=pK, each NZPCSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

[0285] In one embodiment, with N antenna ports disposed on M antenna panels and K=qM, each NZPCSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; wherein the port number of the third antenna port is in the first half of the port numbers of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the port numbers of the N / M antenna ports included in the antenna panel, M is greater than 1, and q is a positive integer greater than 1.

[0286] In one embodiment, N is greater than 32.

[0287] In one embodiment, when N is 48, the value of K includes one of 2, 3, and 4; when N is 64, the value of K includes one of 2 and 4; and when N is 128, the value of K includes 4.

[0288] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: receiving a first CSI-RS resource configuration sent by the access network device, the first CSI-RS resource configuration being used to instruct CSI-RS to be measured based on K NZP CSI-RS resources.

[0289] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: receiving a second CSI-RS resource configuration sent by the access network device, the second CSI-RS resource configuration being used to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZP CSI-RS resources.

[0290] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0291] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0292] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for transmitting a reference signal, characterized in that, The method includes: The access network equipment transmits the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources based on the mapping relationship between N antenna ports and K non-zero power channel state information reference signals (NZP CSI-RS resources). Where N and K are both greater than 1, each of the NZP CSI-RS resources is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

2. The method according to claim 1, characterized in that, The number of antenna ports in each of the NZP CSI-RS resource mappings is N / K, and there is no overlap between the antenna ports in each of the ZP CSI-RS resource mappings.

3. The method according to claim 1, characterized in that, The K NZP CSI-RS resources belong to the same CSI-RS resource set.

4. The method according to claim 1, characterized in that, In each of the NZP CSI-RS resource mappings, half of the antenna ports are polarized horizontally, while the remaining half are polarized vertically.

5. The method according to claim 4, characterized in that, When the N antenna ports are set on a single antenna panel, each of the NZP CSI-RS resources is mapped to N / 2K first antenna ports and N / 2K second antenna ports; The port number of the first antenna port is in the first half of the N antenna ports, and the port number of the second antenna port is in the last half of the N antenna ports.

6. The method according to claim 4, characterized in that, When the N antenna ports are set on M antenna panels, and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

7. The method according to claim 4, characterized in that, When the N antenna ports are set on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; Wherein, the port number of the third antenna port is in the first half of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the N / M antenna ports included in the antenna panel, where M is greater than 1 and q is a positive integer greater than 1.

8. The method according to any one of claims 1 to 7, characterized in that, N is greater than 32.

9. The method according to claim 8, characterized in that, When N is 48, the value of K can be one of 2, 3, or 4; When N is 64, the value of K can be either 2 or 4; When N is 128, the possible values ​​of K include 4.

10. The method according to any one of claims 1 to 7, characterized in that, The method further includes: The access network device sends a first CSI-RS resource configuration to the first terminal device (UE). The first CSI-RS resource configuration is used to instruct the first UE to perform CSI-RS measurements based on the K NZP CSI-RS resources.

11. The method according to claim 10, characterized in that, The method further includes: The access network device sends a second CSI-RS resource configuration to the second UE. The second CSI-RS resource configuration is used to instruct the second UE to measure CSI-RS based on the K NZP CSI-RS resources, or the second CSI-RS resource configuration is used to instruct the second UE to measure CSI-RS based on a portion of the K NZP CSI-RS resources.

12. A method for transmitting a reference signal, characterized in that, The method includes: The UE receives CSI-RS transmitted from N antenna ports of the access network device, wherein the CSI-RS transmitted from the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources; Where N and K are both greater than 1, each of the NZP CSI-RS resources is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

13. The method according to claim 12, characterized in that, The number of antenna ports in each of the NZP CSI-RS resource mappings is N / K, and there is no overlap between the antenna ports in each of the ZP CSI-RS resource mappings.

14. The method according to claim 12, characterized in that, The K NZP CSI-RS resources belong to the same CSI-RS resource set.

15. The method according to claim 12, characterized in that, In each of the NZP CSI-RS resource mappings, half of the antenna ports are polarized horizontally, while the remaining half are polarized vertically.

16. The method according to claim 15, characterized in that, When the N antenna ports are set on a single antenna panel, each of the NZP CSI-RS resources is mapped to N / 2K first antenna ports and N / 2K second antenna ports; The port number of the first antenna port is in the first half of the N antenna ports, and the port number of the second antenna port is in the last half of the N antenna ports.

17. The method according to claim 15, characterized in that, When the N antenna ports are set on M antenna panels, and M=pK, each NZP CSI-RS resource is mapped to an antenna port in p antenna panels; where M is greater than 1 and p is a positive integer greater than or equal to 1.

18. The method according to claim 15, characterized in that, When the N antenna ports are set on M antenna panels and K=qM, each NZP CSI-RS resource is mapped to 1 / 2q of the third antenna port and 1 / 2q of the fourth antenna port of one of the M antenna panels; Wherein, the port number of the third antenna port is in the first half of the N / M antenna ports included in the antenna panel, and the port number of the fourth antenna port is in the last half of the N / M antenna ports included in the antenna panel, where M is greater than 1 and q is a positive integer greater than 1.

19. The method according to any one of claims 12 to 18, characterized in that, N is greater than 32.

20. The method according to claim 19, characterized in that, When N is 48, the value of K can be one of 2, 3, or 4; When N is 64, the value of K can be either 2 or 4; When N is 128, the possible values ​​of K include 4.

21. The method according to any one of claims 12 to 18, characterized in that, The method further includes: The UE receives a first CSI-RS resource configuration sent by the access network device. The first CSI-RS resource configuration is used to instruct CSI-RS to be measured based on the K NZP CSI-RS resources.

22. The method according to any one of claims 12 to 18, characterized in that, The method further includes: The UE receives a second CSI-RS resource configuration sent by the access network device. The second CSI-RS resource configuration is used to instruct the second UE to perform CSI-RS measurements based on a portion of the K NZP CSI-RS resources.

23. A reference signal transmitting device, characterized in that, For use in access network equipment, the device includes: The reference signal transmission module is used to transmit the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources; Where N and K are both greater than 1, each of the NZP CSI-RS resources is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

24. A reference signal transmitting device, characterized in that, For use in a UE, the device includes: A reference signal receiving module is used to receive CSI-RS transmitted by N antenna ports of the access network device, wherein the CSI-RS transmitted by the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources; Where N and K are both greater than 1, each of the NZP CSI-RS resources is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

25. An access network device, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: Based on the mapping relationship between N antenna ports and K NZP CSI-RS resources, the transceiver is controlled to transmit the CSI-RS transmitted by the N antenna ports on the aggregated K NZP CSI-RS resources; Where N and K are both greater than 1, each of the NZP CSI-RS resources is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

26. A user equipment, characterized in that, Includes memory, transceiver, and processor: A memory for storing computer programs; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer programs from the memory and performing the following operations: The transceiver is controlled to receive CSI-RS transmitted by N antenna ports of the access network device, wherein the CSI-RS transmitted by the N antenna ports is carried on the K NZP CSI-RS resources based on the mapping relationship between the N antenna ports and K NZP CSI-RS resources; Where N and K are both greater than 1, each of the NZP CSI-RS resources is mapped to a portion of the N antenna ports, and the total number of antenna ports mapped by the K NZP CSI-RS resources is equal to N.

27. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 22.

28. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 22.

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