WO2023197154A1

WO2023197154A1 - Wireless communication method, terminal device, and network device

Info

Publication number: WO2023197154A1
Application number: PCT/CN2022/086358
Authority: WO
Inventors: 陈文洪; 方昀; 曹建飞
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2023-10-19

Abstract

Embodiments of the present application provide a wireless communication method, a terminal device, and a network device. DMRS ports can be expanded to at least four CDM groups, and each CDM group comprises at least two DMRS ports, such that multiplexing of more users and more transmission layers can be supported, and the spectrum efficiency of MU MIMO is improved. The wireless communication method comprises: a terminal device determines physical resources occupied by different DMRS ports on a transmission bandwidth, wherein the different DMRS ports are divided into M CDM groups, each CDM group in the M CDM groups comprises N DMRS ports, M and N are both positive integers, M≥4, and N≥2; and the terminal device receives DMRS port indication information, and the terminal device sends or receives a DMRS on a physical resource occupied by a DMRS port indicated by the DMRS port indication information.

Description

Wireless communication method, terminal equipment and network equipment

Technical field

Embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, terminal equipment, and network equipment.

Background technique

The New Radio (NR) system supports two different Demodulation Reference Signal (DMRS) types, Type 1 and Type 2. Different types of DMRS have different resource occupancy methods. Type 1 DMRS can support up to 8 positive signals. Orthogonal DMRS ports. For type 2DMRS, up to 12 orthogonal DMRS ports can be supported. In some multi-user multiple input multiple output (Multiple-User Multiple Input Multiple Output, MU MIMO) deployment scenarios, more than 8/12 orthogonal DMRS ports may be multiplexed, such as simultaneous multiplexing during hotspot coverage. There are many terminals, or the number of transmission layers of multiplexed terminals is large. In this case, since the NR system can only support 8 or 12 orthogonal DMRS ports, the base station cannot schedule multiplexing layers exceeding this number, otherwise it will affect The demodulation performance of DMRS ultimately limits the spectrum efficiency of the system.

Contents of the invention

Embodiments of the present application provide a wireless communication method, terminal equipment and network equipment, which can expand DMRS ports to at least 4 CDM groups, and each CDM group contains at least 2 DMRS ports, thereby supporting more users. Multiplexing with the number of transmission layers improves the spectral efficiency of MU MIMO.

In a first aspect, a wireless communication method is provided, which method includes:

The terminal device determines the physical resources occupied by different DMRS ports in the transmission bandwidth; among them, different DMRS ports are divided into M CDM groups, and each CDM group in the M CDM groups contains N DMRS ports, where M and N are both Positive integer, and M≥4, N≥2;

The terminal device receives the DMRS port indication information, and the terminal device sends or receives DMRS on the physical resources occupied by the DMRS port indicated by the DMRS port indication information.

In a second aspect, a wireless communication method is provided, which method includes:

The network device determines the physical resources occupied by different DMRS ports in the transmission bandwidth; among them, different DMRS ports are divided into M CDM groups, and each CDM group in the M CDM groups contains N DMRS ports, and M and N are both Positive integer, and M≥4, N≥2;

The network device sends DMRS port indication information, where the DMRS port indication information is used to indicate the target DMRS port used by the terminal device;

The network device sends or receives DMRS on the physical resources occupied by the target DMRS port.

A third aspect provides a terminal device for executing the method in the first aspect.

Specifically, the terminal device includes a functional module for executing the method in the first aspect.

A fourth aspect provides a network device for performing the method in the above second aspect.

Specifically, the network device includes a functional module for executing the method in the above second aspect.

In a fifth aspect, a terminal device is provided, including a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the above-mentioned first aspect. Methods.

In a sixth aspect, a network device is provided, including a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory, so that the network device performs the above-mentioned second aspect. Methods.

A seventh aspect provides an apparatus for implementing the method in any one of the above first to second aspects.

Specifically, the device includes: a processor, configured to call and run a computer program from a memory, so that a device installed with the device executes the method in any one of the above-mentioned first to second aspects.

An eighth aspect provides a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the above-mentioned first to second aspects.

In a ninth aspect, a computer program product is provided, including computer program instructions, which cause a computer to execute the method in any one of the above-mentioned first to second aspects.

A tenth aspect provides a computer program that, when run on a computer, causes the computer to execute the method in any one of the above-mentioned first to second aspects.

Through the above technical solution, DMRS ports can be expanded to at least 4 CDM groups, and each CDM group contains at least 2 DMRS ports, thereby supporting more users and transmission layer multiplexing, and improving the spectrum efficiency of MU MIMO.

Description of the drawings

Figure 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

Figure 2 is a schematic diagram of two DMRS types supported by an NR provided by this application.

Figure 3 is a schematic flow chart of a wireless communication method provided according to an embodiment of the present application.

Figure 4 is a schematic diagram of subcarriers occupied by four CDM groups in two PRBs according to an embodiment of the present application.

Figure 5 is a schematic diagram of subcarriers occupied by another four CDM groups in two PRBs according to an embodiment of the present application.

Figure 6 is a schematic diagram of subcarriers occupied by yet another four CDM groups in two PRBs according to an embodiment of the present application.

Figure 7 is a schematic diagram of subcarriers occupied by four CDM groups in one PRB according to an embodiment of the present application.

Figure 8 is a schematic flowchart of another wireless communication method provided according to an embodiment of the present application.

Figure 9 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Figure 10 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Figure 11 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Figure 12 is a schematic block diagram of a device provided according to an embodiment of the present application.

Figure 13 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Regarding the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Internet of Things ( internet of things (IoT), wireless fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

In some embodiments, the communication system in the embodiments of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) scenario. ) network deployment scenario, or applied to Non-Standalone (NSA) network deployment scenario.

In some embodiments, the communication system in the embodiments of the present application can be applied to unlicensed spectrum, where the unlicensed spectrum can also be considered as shared spectrum; or, the communication system in the embodiments of the present application can also be applied to licensed spectrum, Among them, licensed spectrum can also be considered as unshared spectrum.

In some embodiments, the communication system in the embodiment of the present application can be applied to the FR1 frequency band (corresponding to the frequency band range 410MHz to 7.125GHz), can also be applied to the FR2 frequency band (corresponding to the frequency band range 24.25GHz to 52.6GHz), and can also be applied to The new frequency band, for example, corresponds to the frequency band range of 52.6 GHz to 71 GHz or the high frequency band corresponding to the frequency band range of 71 GHz to 114.25 GHz.

The embodiments of this application describe various embodiments in combination with network equipment and terminal equipment. The terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in the WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital assistant. (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or in the future Terminal equipment in the evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).

In the embodiment of this application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal. Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city (smart city) or wireless terminal equipment in smart home (smart home), vehicle-mounted communication equipment, wireless communication chip/application specific integrated circuit (ASIC)/system on chip (System on Chip, SoC), etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of this application, the network device may be a device used to communicate with mobile devices. The network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA. , or it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment or base station (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.

As an example and not a limitation, in the embodiment of the present application, the network device may have mobile characteristics, for example, the network device may be a mobile device. In some embodiments, network devices may be satellites or balloon stations. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc. In some embodiments, the network device may also be a base station installed on land, water, or other locations.

In this embodiment of the present application, network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). The small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

Exemplarily, the communication system 100 applied in the embodiment of the present application is shown in Figure 1 . The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (also referred to as a communication terminal or terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminal devices located within the coverage area.

Figure 1 exemplarily shows one network device and two terminal devices. In some embodiments, the communication system 100 may include multiple network devices and other numbers of terminal devices may be included within the coverage of each network device. The embodiments of the present application do not limit this.

In some embodiments, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiments of the present application.

It should be understood that in the embodiments of this application, devices with communication functions in the network/system may be called communication devices. Taking the communication system 100 shown in Figure 1 as an example, the communication device may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above, which will not be described again here. ; The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that this article involves a first communication device and a second communication device. The first communication device may be a terminal device, such as a mobile phone, a machine facility, a Customer Premise Equipment (CPE), industrial equipment, a vehicle, etc.; the second communication device The device may be a peer communication device of the first communication device, such as a network device, a mobile phone, an industrial device, a vehicle, etc. This article takes the first communication device as a terminal device and the second communication device as a network device as a specific example for description.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application and are not intended to limit the present application. The terms “first”, “second”, “third” and “fourth” in the description, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific sequence. . Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

It should be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.

In the description of the embodiments of this application, the term "correspondence" can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.

In the embodiment of this application, "predefinition" or "preconfiguration" can be achieved by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol.

In the embodiments of this application, the "protocol" may refer to a standard protocol in the communication field, for example, it may be an evolution of the existing LTE protocol, NR protocol, Wi-Fi protocol or protocols related to other communication systems. The application does not limit the type of agreement.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application. The embodiments of this application include at least part of the following content.

In the NR system, the Demodulation Reference Signal (DMRS) can be divided into pre-DMRS and post-DMRS. The pre-DMRS is usually located in the first few orthogonal frequency-division multiplexing (Orthogonal frequency-division) of the time slot. multiplexing (OFDM) symbols, the post-DMRS is a repetition of the pre-DMRS, and is used to ensure performance in high-speed scenarios. The preamble DMRS can contain 1 or 2 OFDM symbols and is configured by the network device. At the same time, NR supports two different DMRS types, Type 1 and Type 2, and different types have different resource occupancy methods.

For type 1 DMRS (A in Figure 2), 2 code division multiplexing (CDM) groups (different padding) can be supported on one OFDM symbol per physical resource block (PRB) , each CDM group contains 6 subcarriers. Each CDM group can support 2 ports. The orthogonal cover code (OCC) is maintained between the two ports. That is, the orthogonal cover code (OCC) code used by one port on different carriers is: [+1+1+1+1+1+1], the OCC code used by the other port is [+1-1+1-1+1-1]. In this way, Type 1 DMRS can support up to 4 orthogonal ports on one OFDM symbol and up to 8 orthogonal ports on two OFDM symbols (time-division orthogonal coverage code (Time Division Orthogonal Cover Code) is used between two OFDM symbols). Division Orthogonal Cover Code, TD-OCC)). Specifically, the first CDM group of the first DMRS symbol includes ports {1000,1001}, the second CDM group includes ports {1002,1003}; the first CDM group of the second DMRS symbol includes port {1004 ,1005}, the second CDM group contains ports {1006,1007}.

For type 2DMRS (B in Figure 2), one OFDM symbol of each PRB can support 3 CDM groups (different padding indicates different CDM groups), and each CDM group contains 4 adjacent subcarriers. . Each CDM group can support 2 ports. The two ports are orthogonal through OCC. That is, the OCC code used by one port on different carriers is [+1+1+1+1], and the OCC code used by the other port is [+1+1+1+1]. The OCC code is [+1-1+1-1]. In this way, Type 2DMRS can support up to 6 orthogonal ports on one OFDM symbol and up to 12 orthogonal ports on two OFDM symbols (TD-OCC is used between two OFDM symbols). Specifically, the first CDM group of the first DMRS symbol includes ports {1000,1001}, the second CDM group includes ports {1002,1003}, and the third CDM group includes ports {1004,1005}; the second The first CDM group of DMRS symbols contains ports {1006,1007}, the second CDM group contains ports {1008,1009}, and the third CDM group contains ports {1010,1011}.

In order to facilitate a better understanding of the embodiments of the present application, the problems solved by the present application will be described.

Existing DMRS designs can support up to 8 ports for Type 1 DMRS and up to 12 ports for Type 2 DMRS. However, in some MU MIMO deployment scenarios, more than 8/12 ports may be multiplexed, such as hotspot coverage or multiple transmission and reception points (Transmission Reception Point, TRP) transmission when more UEs are multiplexed at the same time, or The multiplexed UE has a large number of transmission layers, and each transmission layer is transmitted through a DMRS port. At this time, since NR can only support 8 or 12 orthogonal DMRS ports, the base station cannot schedule multiplexing layers exceeding this number, otherwise it will affect the demodulation performance of DMRS and ultimately limit the spectrum efficiency of the system.

Based on the above problems, this application designs a resource mapping method for DMRS ports. The DMRS ports are divided into M CDM groups. Each CDM group in the M CDM groups contains N DMRS ports. M and N are both positive. Integer, and M≥4, N≥2. That is, in the embodiment of the present application, Type 1 DMRS can be extended to more than 4 CDM groups, a maximum of 8 orthogonal DMRS ports can be supported on a single OFDM symbol, and a maximum of 16 orthogonal DMRS ports can be supported on two OFDM symbols. DMRS ports to support more users and transmission layer multiplexing, improving the spectrum efficiency of MU-MIMO.

The technical solutions of the present application are described in detail below through specific examples.

Figure 3 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in Figure 3, the wireless communication method 200 may include at least part of the following content:

S210, the terminal device determines the physical resources occupied by different DMRS ports in the transmission bandwidth; wherein, different DMRS ports are divided into M CDM groups, and each CDM group in the M CDM groups contains N DMRS ports, M and N All are positive integers, and M≥4, N≥2;

S220: The terminal device receives the DMRS port indication information, and the terminal device sends or receives DMRS on the physical resources occupied by the DMRS port indicated by the DMRS port indication information.

In this embodiment of the present application, the DMRS may be a Type 1 DMRS. Of course, it can also be other types of DMRS, and this application is not limited to this.

In some embodiments, the terminal device can report support for the enhanced DMRS pattern (pattern), and the network device is configured with the enhanced DMRS pattern. In this case, the terminal device can be triggered to perform the above S210.

In some embodiments, DMRS port indication information is carried through one of the following:

Downlink Control Information (DCI), Media Access Control Layer Control Element (MAC CE), Radio Resource Control (Radio Resource Control, RRC).

In some embodiments, the transmission bandwidth is the transmission bandwidth of DMRS or the transmission bandwidth of DMRS-associated physical downlink shared channel (Physical Downlink Shared Channel, PDSCH)/physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).

In some embodiments, M=4, and/or, N=2 or N=4. That is, the DMRS ports of the terminal equipment are divided into 4 CDM groups, and each CDM group of the 4 CDM groups contains 2 DMRS ports or 4 DMRS ports.

In the embodiment of this application, M can also be other values greater than or equal to 4, and N can also be other values greater than or equal to 2, which this application is not limited to. In addition, when M and N take other values, similar descriptions may refer to the relevant descriptions for M=4 and N=2 or N=4 in this application, which will not be described again here.

The following description takes M=4, and/or N=2 or N=4 as an example. In the embodiment of this application, the four CDM groups are respectively recorded as CDM group 0, CDM group 1, CDM group 2 and CDM group 3.

In some embodiments, the i-th CDM group among the M CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth; where i and k are both integers, and 1≤i≤M, k=0, 1,2,…. That is, the i-th CDM group among the four CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth, 1≤i≤4. The value of k is determined by the size of the transmission bandwidth to ensure that DMRS can cover the entire transmission bandwidth.

Specifically, the i-th CDM group among the four CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth, where k=0,1,2,…. For example, CDM group 0 (for example, DMRS port {1000,1001}) occupies the 4k+1th subcarrier on the transmission bandwidth, that is, the {1,5,9}th subcarrier in each PRB; CDM group 1 ( For example, DMRS port {1002,1003}) occupies the 4k+2nd subcarrier on the transmission bandwidth, that is, the {2,6,10}th subcarrier in each PRB; CDM group 2 (for example, DMRS port {1004, 1005}) occupies the 4k+3 subcarriers on the transmission bandwidth, that is, the {3,7,11}th subcarriers in each PRB; CDM group 3 (for example, DMRS port {1006,1007}) occupies the transmission bandwidth The 4k+4th subcarrier, that is, the {4,8,12}th subcarrier in each PRB.

In one implementation, when the i-th CDM group among the four CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth, the four CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) The subcarriers occupied respectively in two PRBs (PRB 0 and PRB 1) can be shown in Figure 4, in which DMRS occupies 1 OFDM symbol, and different fillings in the figure represent different CDM groups.

In one implementation, when DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [+1+1] and [+1-1], or the OCC codes used by the two DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1+ 1] and [+1-1+1], or the OCC codes used by the two DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+1+1+1] respectively. and [-1+1-1]. In this embodiment, the OCC codes used by the two DMRS ports included in each CDM group on adjacent subcarriers are designed to ensure orthogonality between the two DMRS ports on adjacent subcarriers.

Specifically, when DMRS occupies 1 OFDM symbol and N=2, the first DMRS port in each CDM group in the 4 CDM groups is on every 2 adjacent subcarriers (for example, subcarrier 0 and subcarrier The OCC code used on carrier 1, subcarrier 2 and subcarrier 3, and so on) is [+1+1], and the OCC code used on the second DMRS port on every 2 adjacent subcarriers is [+1- 1]; or, the first DMRS port in each CDM group of the 4 CDM groups is connected to every 3 adjacent subcarriers (for example, subcarrier 0/1/2 (i.e., subcarrier 0, subcarrier 1 and subcarrier Carrier 2), the OCC code used on subcarrier 3/4/5 (i.e. subcarrier 3, subcarrier 4 and subcarrier 5, and so on) is [+1+1+1], and the second DMRS port is The OCC code used on every three adjacent subcarriers is [+1-1+1] or [-1+1-1].

In one implementation, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [+1+1], [+1-1], [+1+1] and [+1-1], or the 4 DMRS ports included in each of the M CDM groups are adjacent The OCC codes used by subcarriers are [+1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or the M CDM The OCC codes used by the four DMRS ports in the adjacent subcarriers of each CDM group in the group are [+1+1+1], [-1+1-1], [+1+1+1] respectively. and [-1+1-1]; and/or, when DMRS occupies 2 OFDM symbols and N=4, the 4 DMRS ports included in each CDM group of the M CDM groups are in the 2 The OCC codes used on OFDM symbols are [+1+1], [+1+1], [+1-1], and [+1-1]. In this embodiment, the OCC codes used by the four DMRS ports included in each CDM group on adjacent subcarriers are designed to ensure orthogonality between the four DMRS ports on adjacent subcarriers.

Specifically, when DMRS occupies 2 OFDM symbols and N=4, the first and third DMRS ports in each CDM group of the 4 CDM groups are used on every 2 adjacent subcarriers. The OCC code is [+1+1], and the OCC code used by the second and fourth DMRS ports on every 2 adjacent subcarriers is [+1-1]; or, each of the 4 CDM groups The first and third DMRS ports in the CDM group use the OCC code [+1+1+1] on every 3 adjacent subcarriers, and the second and fourth DMRS ports use the OCC code on every 3 adjacent subcarriers. The OCC code used on adjacent subcarriers is [+1-1+1] or [-1+1-1].

Specifically, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the first and second DMRS ports in each of the 4 CDM groups on 2 OFDM symbols are: [+1+1], the OCC code used by the third and fourth DMRS ports on 2 OFDM symbols is [+1-1].

In one implementation, the DMRS ports included in different CDM groups and the OCC codes used by each DMRS port are as shown in Table 1 below. For one DMRS symbol (that is, DMRS occupies 1 OFDM symbol), use the configuration of ports 1000-1007; for two DMRS symbols (that is, DMRS occupies 2 OFDM symbols), you can use the configuration of ports 1000-1015. It should be noted that Table 1 is only an example and does not limit this application.

Table 1

DMRS端口索引DMRS port index	CDM组索引CDM group index	频域OCCFrequency domain OCC	时域OCCTime domain OCC
10001000	00	[+1+1][+1+1]	[+1+1][+1+1]
10011001	00	[+1-1][+1-1]	[+1+1][+1+1]
10021002	11	[+1+1][+1+1]	[+1+1][+1+1]
10031003	11	[+1-1][+1-1]	[+1+1][+1+1]
10041004	22	[+1+1][+1+1]	[+1+1][+1+1]
10051005	22	[+1-1][+1-1]	[+1+1][+1+1]
10061006	33	[+1+1][+1+1]	[+1+1][+1+1]
10071007	33	[+1-1][+1-1]	[+1+1][+1+1]
10081008	00	[+1+1][+1+1]	[+1-1][+1-1]
10091009	00	[+1-1][+1-1]	[+1-1][+1-1]
10101010	11	[+1+1][+1+1]	[+1-1][+1-1]
10111011	11	[+1-1][+1-1]	[+1-1][+1-1]
10121012	22	[+1+1][+1+1]	[+1-1][+1-1]
10131013	22	[+1-1][+1-1]	[+1-1][+1-1]
10141014	33	[+1+1][+1+1]	[+1-1][+1-1]
10151015	33	[+1-1][+1-1]	[+1-1][+1-1]

In another implementation manner, the DMRS ports included in different CDM groups and the OCC codes used by each port are as shown in Table 2 below. For one DMRS symbol (that is, DMRS occupies 1 OFDM symbol), use the configuration of ports 1000-1007; for two DMRS symbols (that is, DMRS occupies 2 OFDM symbols), you can use the configuration of ports 1000-1015. It should be noted that Table 2 is only an example and does not limit this application.

Table 2

DMRS端口索引DMRS port index	CDM组索引CDM group index	频域OCCFrequency domain OCC	时域OCCTime domain OCC
10001000	00	[+1+1+1][+1+1+1]	[+1+1][+1+1]
10011001	00	[+1-1+1][+1-1+1]	[+1+1][+1+1]
10021002	11	[+1+1+1][+1+1+1]	[+1+1][+1+1]
10031003	11	[+1-1+1][+1-1+1]	[+1+1][+1+1]
10041004	22	[+1+1+1][+1+1+1]	[+1+1][+1+1]
10051005	22	[+1-1+1][+1-1+1]	[+1+1][+1+1]
10061006	33	[+1+1+1][+1+1+1]	[+1+1][+1+1]
10071007	33	[+1-1+1][+1-1+1]	[+1+1][+1+1]
10081008	00	[+1+1+1][+1+1+1]	[+1-1][+1-1]
10091009	00	[+1-1+1][+1-1+1]	[+1-1][+1-1]
10101010	11	[+1+1+1][+1+1+1]	[+1-1][+1-1]
10111011	11	[+1-1+1][+1-1+1]	[+1-1][+1-1]
10121012	22	[+1+1+1][+1+1+1]	[+1-1][+1-1]
10131013	22	[+1-1+1][+1-1+1]	[+1-1][+1-1]

10141014	33	[+1+1+1][+1+1+1]	[+1-1][+1-1]
10151015	33	[+1-1+1][+1-1+1]	[+1-1][+1-1]

Specifically, in this embodiment of the present application, the port indication information may be used to indicate one or more of the DMRS ports in Table 1 or Table 2 above.

In some embodiments, the DMRS port indication information is also used to indicate the CDM group used for data channel rate matching among the M CDM groups. Specifically, the terminal device can perform rate matching on the data channel according to the physical resources occupied by the CDM group indicated by the DMRS port indication information. For example, the DMRS port indication information may also indicate the number of CDM groups or CDM groups used for rate matching of PDSCH or PUSCH among the four CDM groups. Further, the terminal device performs rate matching on the PDSCH/PUSCH according to the physical resources occupied by the CDM group indicated by the DMRS port indication information. Alternatively, the terminal device determines the physical resources occupied by the CDM group according to the number of CDM groups indicated by the DMRS port indication information, and performs rate matching on the PDSCH/PUSCH according to the physical resources occupied by the CDM group. and sending or receiving DMRS on the physical resources occupied by the DMRS port indicated by the DMRS port indication information.

In one implementation, when DMRS occupies 1 OFDM symbol and N=2, the DMRS ports included in the four CDM groups are {1000,1001}, {1002,1003}, {1004,1005}, {1006,1007}. In another implementation, when DMRS occupies 1 OFDM symbol and N=2, the DMRS ports included in the four CDM groups are {0,1}, {2,3}, {4,5} respectively. , {6,7}.

In one implementation, on the premise of complying with the above technical logic, the port numbers of the embodiment are not limited to {1000,1001}, {1002,1003}, {1004,1005}, {1006,1007}. combination. When DMRS occupies 1 OFDM symbol and N=2, the DMRS ports included in the four CDM groups are {1008,1009}, {1010,1011}, {1012,1013}, and {1014,1015} respectively. In another implementation, when DMRS occupies 1 OFDM symbol and N=2, the DMRS ports included in the four CDM groups are {8,9}, {10,11}, {12,13} respectively. , {14,15}.

In one implementation, when DMRS occupies 2 OFDM symbols and N=4, the DMRS ports included in the four CDM groups are {1000,1001,1008,1009} and {1002,1003,1010,1011 respectively. }, {1004,1005,1012,1013}, {1006,1007,1014,1015}. In another implementation, when DMRS occupies 2 OFDM symbols and N=4, the DMRS ports included in the four CDM groups are {0,1,8,9}, {2,3,10, 11}, {4,5,12,13}, {6,7,14,15}.

In one implementation, on the premise of complying with the above technical logic, the port numbers of the embodiment are not limited to {1000,1001,1008,1009}, {1002,1003,1010,1011}, {1004,1005, Such combinations as 1012,1013} and {1006,1007,1014,1015}. For example, the starting sequence number of its port may be increased by an integer multiple of 8 (port sequence number + 8). When DMRS occupies 2 OFDM symbols and N=4, the DMRS ports included in the four CDM groups are {1008 ,1009,1016,1017}, {1010,1011,1018,1019}, {1012,1013,1020,1021}, {1014,1015,1022,1023}. In another implementation, when DMRS occupies 2 OFDM symbols and N=4, the DMRS ports included in the four CDM groups are {8,9,16,17}, {10,11,18, 19}, {12,13,20,21}, {14,15,22,23}.

In some implementations, the first CDM group and the second CDM group among the M CDM groups occupy different numbers of subcarriers in the same PRB. That is, among the four CDM groups, the first CDM group and the second CDM group occupy different numbers of subcarriers in the same PRB. Optionally, the first CDM group includes CDM group 0 or CDM group 1 among the M CDM groups, and the second CDM group includes CDM group 2 or CDM group 3 among the M CDM groups.

In some embodiments, CDM Group 0 and CDM Group 1 among the M CDM groups occupy the same number of subcarriers in one PRB, and CDM Group 2 and CDM Group 3 among the M CDM groups occupy one PRB. The number of subcarriers is the same. That is, among the four CDM groups, CDM group 0 and CDM group 1 occupy the same number of subcarriers in a PRB (called the first subcarrier number), and CDM group 2 and CDM group 3 occupy the same number of subcarriers in a PRB. The number is the same (called the second subcarrier number), and the first subcarrier number and the second subcarrier number are different.

In some implementations, each of the M CDM groups occupies a different number of subcarriers in two adjacent PRBs.

In some embodiments, CDM group 0 and CDM group 1 in the M CDM groups respectively occupy k ₁ subcarriers in odd-numbered PRBs, and respectively occupy k ₂ subcarriers in even-numbered PRBs; and/or, the M CDM group 2 and CDM group 3 in the CDM group respectively occupy k ₂ subcarriers in odd-numbered PRBs, and k ₁ subcarriers in even-numbered PRBs; where k ₁ and k ₂ are both positive integers. Specifically, k ₁ ≠ k ₂ . In this way, if the transmission bandwidth is an even number of PRBs, the number of subcarriers occupied by different CDM groups is the same in the entire transmission bandwidth.

Specifically, k ₁ =4 and k ₂ =2, or k ₁ =2 and k ₂ =4. Of course, k ₁ and k ₂ can also take other values, and this application is not limited to this. Therefore, each CDM group occupies a different number of subcarriers in two adjacent PRBs.

In some embodiments, CDM group 0 (for example, DMRS port {1000, 1001}) in the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of odd-numbered PRBs and even-numbered PRBs on the transmission bandwidth The {1,3}th subcarrier of ,8} subcarriers and the {2,4}th subcarrier of the even-numbered PRB; and/or, CDM group 2 (for example, DMRS port {1004,1005}) in the M CDM groups occupies the odd-numbered PRB on the transmission bandwidth The {9,11}th subcarrier and the {5,7,9,11}th subcarrier of the even-numbered PRB; and/or, CDM group 3 in the M CDM groups (for example, DMRS port {1006,1007} ) occupies the {10, 12}th subcarrier of the odd-numbered PRB and the {6, 8, 10, 12}th subcarrier of the even-numbered PRB on the transmission bandwidth. For example, the subcarriers occupied by four CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) in two PRBs (PRB 0 and PRB 1) can be shown in Figure 5, where DMRS Occupies 1 OFDM symbol, and different padding represents different CDM groups.

In some embodiments, CDM group 0 among the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of odd-numbered PRBs and the {9, 11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or , CDM group 1 among the M CDM groups occupies the {2, 4, 6, 8} subcarriers of the odd PRBs and the {10, 12}th subcarriers of the even PRBs on the transmission bandwidth; and/or, the M CDM group 2 in the CDM group occupies the {9,11}th subcarrier of the odd-numbered PRB and the {1,3,5,7}th subcarrier of the even-numbered PRB on the transmission bandwidth; and/or, the M CDM groups CDM group 3 in occupies the {10, 12}th subcarrier of odd-numbered PRBs and the {2, 4, 6, 8}th subcarriers of even-numbered PRBs on the transmission bandwidth. For example, the subcarriers occupied by four CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) in two PRBs (PRB 0 and PRB 1) can be shown in Figure 6, where DMRS Occupies 1 OFDM symbol, and different padding represents different CDM groups.

In some embodiments, when DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports contained in each CDM group in adjacent subcarriers in the M CDM groups are respectively [ +1+1] and [+1-1]. That is, when DMRS occupies 1 OFDM symbol, each of the 4 CDM groups contains 2 DMRS ports, and the OCC codes used by the 2 DMRS ports on adjacent subcarriers are [+1+1] and [+1-1]. For example, the OCC code used by the first DMRS port in each CDM group of 4 CDM groups is [+1+1] on every 2 adjacent subcarriers, and the OCC code used by the second DMRS port on every 2 adjacent subcarriers is [+1+1]. The OCC code used on adjacent subcarriers is [+1-1].

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1], [+1-1], [+1+1] and [+1-1]; and/or, in the case where DMRS occupies 2 OFDM symbols and N=4, the M CDM The OCC codes used by the 4 DMRS ports included in each CDM group in the 2 OFDM symbols are [+1+1], [+1+1], [+1-1] and [+1 respectively. -1]. That is, when DMRS occupies 2 OFDM symbols, each of the 4 CDM groups contains 4 DMRS ports, and the OCC codes used by the 4 DMRS ports on adjacent subcarriers are [+1+1], [+1-1], [+1+1] and [+1-1], and the OCC codes used by the 4 DMRS ports on the 2 OFDM symbols are [+1+1], [+1+1 respectively ],[+1-1],[+1-1]. For example, the first and third DMRS ports in each CDM group use the OCC code [+1+1] on every 2 adjacent subcarriers, and the second and fourth DMRS ports use every 2 adjacent subcarriers. The OCC code used on 2 adjacent subcarriers is [+1-1]. The OCC code used by the first and second DMRS ports in each CDM group on 2 OFDM symbols is [+1+1], and the OCC code used by the third and fourth DMRS ports on 2 OFDM symbols is The OCC code is [+1-1].

In some embodiments, CDM group 0 (for example, DMRS port {1000, 1001, 1008, 1009}) among the M CDM groups occupies the {1, 3, 5}th subcarrier of each PRB; and/or, CDM group 1 (for example, DMRS port {1002, 1003, 1010, 1011}) in the M CDM groups occupies the {2, 4, 6}th subcarrier of each PRB; and/or, the M CDM groups CDM group 2 (for example, DMRS port {1004, 1005, 1012, 1013}) occupies the {7, 9, 11}th subcarrier of each PRB; and/or CDM group 3 in the M CDM groups (For example, DMRS port {1006, 1007, 1014, 1015}) occupies the {8, 10, 12}th subcarrier of each PRB. For example, the subcarriers occupied by 4 CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) in the PRB can be shown in Figure 7, in which DMRS occupies 1 OFDM symbol, and different padding indicates Different CDM groups.

In some embodiments, when DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports contained in each CDM group in adjacent subcarriers in the M CDM groups are respectively [ +1+1+1] and [+1-1+1], or the OCC codes used by the two DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1 respectively +1+1] and [-1+1-1]. That is, when DMRS occupies 1 OFDM symbol, each of the 4 CDM groups contains 2 DMRS ports, and the OCC codes used by the 2 DMRS ports on adjacent subcarriers are [+1+1+1 respectively ] and [+1-1+1], or [+1+1+1] and [-1+1-1] respectively. In this embodiment, the OCC codes used by the two DMRS ports included in each CDM group on adjacent subcarriers are used to ensure orthogonality between the two DMRS ports on adjacent subcarriers.

Specifically, when DMRS occupies 1 OFDM symbol and N=2, the first DMRS port in each CDM group is located on every 3 adjacent subcarriers (for example, subcarrier 0/1/2, subcarrier 3/4/5, and so on), the OCC code used by the second DMRS port on every 3 adjacent subcarriers is [+1-1+ 1] or [-1+1-1].

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or, each of the M CDM groups contains The OCC codes used by the four DMRS ports on adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1]. ; and/or, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in the CDM groups in the M CDM groups on the 2 OFDM symbols are [+ 1+1], [+1+1], [+1-1] and [+1-1]. That is, when DMRS occupies 2 OFDM symbols, each of the 4 CDM groups contains 4 DMRS ports, and the OCC codes used by the 4 DMRS ports on adjacent subcarriers are [+1+1+1 ], [+1-1+1], [+1+1+1] and [+1-1+1], or [+1+1+1], [-1+1-1] respectively, [+1+1+1] and [-1+1-1], and the OCC codes used by the 4 DMRS ports on the 2 OFDM symbols are [+1+1], [+1+1], [ +1-1],[+1-1]. Specifically, the OCC codes used by the first and third DMRS ports in each CDM group of the 4 CDM groups on every 3 adjacent subcarriers are [+1+1+1], and the second and The OCC code used by the fourth DMRS port on every 3 adjacent subcarriers is [+1-1+1] or [-1+1-1]. And the OCC code used on 2 OFDM symbols for the first DMRS port and the second DMRS port in each CDM group of the 4 CDM groups is [+1+1], the third DMRS port and the fourth The OCC code used by the DMRS port on 2 OFDM symbols is [+1-1]. In this embodiment, the OCC codes used by the four DMRS ports included in each CDM group on adjacent subcarriers are designed to ensure orthogonality between the four DMRS ports on adjacent subcarriers.

In some embodiments, when the first DMRS port in each CDM group of M CDM groups uses an OCC code on every two adjacent subcarriers (here, subcarrier 0 and subcarrier 1 are taken as an example) is [ +1+1], when the OCC code used by the second DMRS port on every 2 adjacent subcarriers is [+1-1], the terminal equipment and/or network equipment can use the following method to perform channel processing based on the received DMRS Estimation: Based on the DMRS signals received on adjacent subcarriers, the channel estimates of the first DMRS port and the second DMRS port on these two subcarriers are obtained.

For example, add the DMRS signals received on subcarrier 0 and subcarrier 1 and divide by 2 to get the received signals of the first DMRS port on

subcarriers

0 and 1, and then based on the sequence on the DMRS port, get the Channel estimation of DMRS port on subcarrier 0 or subcarrier 1.

For example, the DMRS signals received on subcarrier 0 and subcarrier 1 are subtracted and divided by 2 to obtain the received signals of the second DMRS port on

subcarriers

0 and 1, and then based on the sequence on the DMRS port, the Channel estimation of DMRS port on subcarrier 0 or subcarrier 1.

In some embodiments, when the first DMRS port in each CDM group in the M CDM groups uses an OCC code on every 3 adjacent subcarriers (here, subcarrier 0/1/2 is taken as an example): [+1+1+1], when the OCC code used by the second DMRS port on every 3 adjacent subcarriers is [+1-1+1] or [-1+1-1] (that is, By designing the OCC codes used by the first DMRS port and the second DMRS port on adjacent subcarriers to ensure orthogonality between the first DMRS port and the second DMRS port on adjacent subcarriers), the terminal equipment And/or the network device may use the following method to perform channel estimation based on the received DMRS: obtain the channel estimates of the first DMRS port and the second DMRS port on the two subcarriers based on the DMRS signals received on the first two subcarriers; Channel estimates of the first DMRS port and the second DMRS port on the two subcarriers are obtained based on the DMRS signals received on the latter two subcarriers. In other words, the DMRS received signal of the intermediate subcarrier will be used twice.

subcarriers

For example, add the DMRS signals received on subcarrier 1 and subcarrier 2 and divide by 2 to obtain the received signals of the first DMRS port on subcarriers 1 and 2. Then, based on the sequence on the DMRS port, the Channel estimation of DMRS port on subcarrier 1 or subcarrier 2

subcarriers

0 and 1, and then based on the sequence on the DMRS port, the Channel estimation of DMRS port on subcarrier 0 or subcarrier 1;

For example, subtract the DMRS signals received on subcarrier 1 and subcarrier 2 and divide by 2 to obtain the received signals of the second DMRS port on subcarriers 1 and 2, and then based on the sequence on the DMRS port, obtain the Channel estimation of DMRS port on subcarrier 1 or subcarrier 2.

Based on the embodiments of this application, Type 1 DMRS in NR can be extended to 4 CDM groups, up to 8 orthogonal DMRS ports can be supported on a single OFDM symbol, and up to 16 orthogonal DMRS ports can be supported on two OFDM symbols. , thereby supporting more users and transmission layer multiplexing, and improving the spectrum efficiency of MU-MIMO.

Therefore, in the embodiment of the present application, the DMRS ports of Type 1 DMRS can be expanded to at least 4 CDM groups, and each CDM group contains at least 2 DMRS ports, and up to 8 orthogonal DMRS ports can be supported on a single OFDM symbol. , can support up to 16 orthogonal DMRS ports on two OFDM symbols, thereby supporting more users and transmission layer multiplexing, and improving the spectrum efficiency of MU MIMO. For example, during hotspot coverage or multi-TRP transmission, more users and transmission layer multiplexing can be supported based on the embodiments of this application, thereby improving the spectrum efficiency of MU MIMO.

The terminal-side embodiment of the present application is described in detail above with reference to Figures 3 to 7. The network-side embodiment of the present application is described in detail below with reference to Figure 8. It should be understood that the network-side embodiment and the terminal-side embodiment correspond to each other. A similar description may refer to the terminal side embodiment.

Figure 8 is a schematic flowchart of a wireless communication method 300 according to an embodiment of the present application. As shown in Figure 8, the wireless communication method 300 may include at least part of the following content:

S310, the network device determines the physical resources occupied by different DMRS ports in the transmission bandwidth; wherein, different DMRS ports are divided into M CDM groups, and each CDM group in the M CDM groups contains N DMRS ports, M and N All are positive integers, and M≥4, N≥2;

S320: The network device sends DMRS port indication information, where the DMRS port indication information is used to indicate the target DMRS port used by the terminal device;

S330: The network device sends or receives DMRS on the physical resources occupied by the target DMRS port.

In some embodiments, the terminal device can report support for the enhanced DMRS pattern, and the network device is configured with the enhanced DMRS pattern. In this case, the network device can be triggered to perform the above S310.

In some embodiments, DMRS port indication information is carried through one of the following: DCI, MAC CE, RRC.

In some embodiments, the transmission bandwidth is the transmission bandwidth of DMRS or the transmission bandwidth of PDSCH/PUSCH associated with DMRS.

In some embodiments, the i-th CDM group among the M CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth; where i and k are both integers, and 1≤i≤M, k=0 ,1,2,…. That is, the i-th CDM group among the four CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth, 1≤i≤4. The value of k is determined by the size of the transmission bandwidth to ensure that DMRS can cover the entire transmission bandwidth.

In one implementation, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [+1+1], [+1-1], [+1+1] and [+1-1], or the 4 DMRS ports included in each of the M CDM groups are adjacent The OCC codes used by subcarriers are [+1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or the M CDM The OCC codes used by the four DMRS ports in the adjacent subcarriers of each CDM group in the group are [+1+1+1], [-1+1-1], [+1+1+1] respectively. and [-1+1-1]; and/or, when DMRS occupies 2 OFDM symbols and N=4, the 4 DMRS ports included in each CDM group of the M CDM groups are in the 2 The OCC codes used on OFDM symbols are [+1+1], [+1+1], [+1-1], and [+1-1].

Specifically, when DMRS occupies 2 OFDM symbols and N=4, the first and third DMRS ports in each CDM group of the 4 CDM groups are used on every 2 adjacent subcarriers. The OCC code is [+1+1], and the OCC code used by the second and fourth DMRS ports on every 2 adjacent subcarriers is [+1-1]; or, each of the 4 CDM groups The first and third DMRS ports in the CDM group use the OCC code [+1+1+1] on every 3 adjacent subcarriers, and the second and fourth DMRS ports use the OCC code on every 3 adjacent subcarriers. The OCC code used on adjacent subcarriers is [+1-1+1] or [-1+1-1]. In this embodiment, the OCC codes used by the four DMRS ports included in each CDM group on adjacent subcarriers are designed to ensure orthogonality between the four DMRS ports on adjacent subcarriers.

In one implementation, the DMRS ports included in different CDM groups and the OCC codes used by each DMRS port are as shown in Table 1 above. For one DMRS symbol, use the configuration of ports 1000-1007; for two DMRS symbols, you can use the configuration of ports 1000-1015.

In another implementation manner, the DMRS ports included in different CDM groups and the OCC codes used by each port are as shown in Table 2 above. For one DMRS symbol, use the configuration of ports 1000-1007; for two DMRS symbols, you can use the configuration of ports 1000-1015.

In one implementation, when DMRS occupies 1 OFDM symbol and N=2, the DMRS ports included in the four CDM groups are {1008,1009}, {1010,1011}, {1012,1013}, {1014,1015}. In another implementation, when DMRS occupies 1 OFDM symbol and N=2, the DMRS ports included in the four CDM groups are {8,9}, {10,11}, {12,13} respectively. , {14,15}.

In one implementation, when DMRS occupies 2 OFDM symbols and N=4, the DMRS ports included in the four CDM groups are {1008, 1009, 1016, 1017} and {1010, 1011, 1018, 1019 respectively. }, {1012,1013,1020,1021}, {1014,1015,1022,1023}. In another implementation, when DMRS occupies 2 OFDM symbols and N=4, the DMRS ports included in the four CDM groups are {8,9,16,17}, {10,11,18, 19}, {12,13,20,21}, {14,15,22,23}.

Specifically, in this embodiment of the present application, the DMRS ports included in different CDM groups and the OCC codes used by each port are as shown in Table 1 or Table 2 above. For one DMRS symbol (that is, DMRS occupies 1 OFDM symbol), use the configuration of ports 1000-1007; for two DMRS symbols (that is, DMRS occupies 2 OFDM symbols), you can use the configuration of ports 1000-1015.

In some implementations, each of the M CDM groups occupies a different number of subcarriers in two adjacent PRBs. For example, in the case where the first CDM group and the second CDM group among the M CDM groups occupy different numbers of subcarriers in the same PRB, each CDM group among the M CDM groups The number of subcarriers occupied in each PRB is different.

In some embodiments, CDM group 0 (for example, DMRS port {1000, 1001}) among the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of odd-numbered PRBs and even-numbered PRBs on the transmission bandwidth. The {1,3}th subcarrier; and/or CDM group 1 (for example, DMRS port {1002,1003}) in the M CDM groups occupies the {2,4,6th, odd-numbered PRB on the transmission bandwidth. 8} subcarriers and the {2, 4} subcarriers of even-numbered PRBs; and/or CDM group 2 (for example, DMRS port {1004,1005}) in the M CDM groups occupies the odd-numbered PRBs on the transmission bandwidth The {9,11}th subcarrier and the {5,7,9,11}th subcarrier of the even-numbered PRB; and/or, CDM group 3 in the M CDM groups (for example, DMRS port {1006,1007}) Occupy the {10, 12}th subcarrier of the odd-numbered PRB and the {6, 8, 10, 12}th subcarrier of the even-numbered PRB on the transmission bandwidth. For example, the subcarriers occupied by four CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) in two PRBs (PRB 0 and PRB 1) can be shown in Figure 5, where DMRS Occupies 1 OFDM symbol, and different padding represents different CDM groups.

In some embodiments, CDM group 0 among the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of the odd PRBs and the {9, 11}th subcarriers of the even PRBs on the transmission bandwidth; and/ Or, CDM group 1 among the M CDM groups occupies the {2, 4, 6, 8} subcarriers of odd-numbered PRBs and the {10, 12th}-th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or, the CDM group 2 in the M CDM groups occupies the {9,11}th subcarrier of the odd-numbered PRB and the {1,3,5,7}th subcarrier of the even-numbered PRB on the transmission bandwidth; and/or, the M CDM CDM group 3 in the group occupies the {10, 12}th subcarriers of odd-numbered PRBs and the {2, 4, 6, and 8th}th subcarriers of even-numbered PRBs on the transmission bandwidth. For example, the subcarriers occupied by four CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) in two PRBs (PRB 0 and PRB 1) can be shown in Figure 6, where DMRS Occupies 1 OFDM symbol, and different padding represents different CDM groups.

In some embodiments, CDM group 0 (for example, DMRS port {1000, 1001, 1008, 1009}) among the M CDM groups occupies the {1, 3, 5}th subcarrier of each PRB; and/or, CDM group 1 (for example, DMRS port {1002, 1003,1010,1011}) in the M CDM groups occupies the {2, 4, 6}th subcarrier of each PRB; and/or, the M CDM groups CDM group 2 (for example, DMRS port {1004, 1005, 1012, 1013}) occupies the {7, 9, 11}th subcarrier of each PRB; and/or CDM group 3 in the M CDM groups (For example, DMRS port {1006, 1007, 1014, 1015}) occupies the {8, 10, 12}th subcarrier of each PRB. For example, the subcarriers occupied by 4 CDM groups (CDM group 0, CDM group 1, CDM group 2 and CDM group 3) in the PRB can be shown in Figure 7, in which DMRS occupies 1 OFDM symbol, and different padding indicates Different CDM groups.

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or, each of the M CDM groups contains The OCC codes used by the four DMRS ports on adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1]. ; and/or, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in the CDM groups in the M CDM groups on the 2 OFDM symbols are [+ 1+1], [+1+1], [+1-1] and [+1-1]. That is, when DMRS occupies 2 OFDM symbols, each of the four CDM groups contains 4 DMRS ports, and the OCC codes used by the 4 DMRS ports on adjacent subcarriers are [+1+1 respectively. +1], [+1-1+1], [+1+1+1] and [+1-1+1], or [+1+1+1], [-1+1-1 respectively ], [+1+1+1] and [-1+1-1], and the OCC codes used by the 4 DMRS ports on the 2 OFDM symbols are [+1+1], [+1+1] respectively ,[+1-1],[+1-1]. Specifically, the OCC codes used by the first and third DMRS ports in each CDM group of the 4 CDM groups on every 3 adjacent subcarriers are [+1+1+1], and the second and The OCC code used by the fourth DMRS port on every 3 adjacent subcarriers is [+1-1+1] or [-1+1-1]. And the OCC code used on 2 OFDM symbols for the first DMRS port and the second DMRS port in each CDM group of the 4 CDM groups is [+1+1], the third DMRS port and the fourth The OCC code used by the DMRS port on 2 OFDM symbols is [+1-1]. In this embodiment, the OCC codes used by the four DMRS ports included in each CDM group on adjacent subcarriers are designed to ensure orthogonality between the four DMRS ports on adjacent subcarriers.

In some embodiments, the DMRS port indication information is also used to indicate the CDM group used for data channel rate matching among the M CDM groups. Specifically, the terminal device can perform rate matching on the data channel according to the physical resources occupied by the CDM group indicated by the DMRS port indication information.

In some embodiments, when the first DMRS port in each CDM group of the M CDM groups uses an OCC code on every two adjacent subcarriers (here, subcarrier 0 and subcarrier 1 are taken as an example): [+1+1], when the OCC code used by the second DMRS port on every 2 adjacent subcarriers is [+1-1] (that is, by designing the first DMRS port and the second DMRS port The OCC code used in adjacent subcarriers, thereby ensuring orthogonality between the first DMRS port and the second DMRS port on adjacent subcarriers), the terminal device and/or network device can use the following method based on the received DMRS Perform channel estimation: obtain channel estimates of the first DMRS port and the second DMRS port on these two subcarriers based on the DMRS signals received on adjacent subcarriers.

subcarriers

In some embodiments, when the first DMRS port in each CDM group of the M CDM groups uses an OCC code on every 3 adjacent subcarriers (here, subcarrier 0/1/2 is taken as an example) is [+1+1+1], and the OCC code used by the second DMRS port on every 3 adjacent subcarriers is [+1-1+1] or [-1+1-1], the terminal equipment And/or the network device may use the following method to perform channel estimation based on the received DMRS: obtain the channel estimates of the first DMRS port and the second DMRS port on the two subcarriers based on the DMRS signals received on the first two subcarriers; Channel estimates of the first DMRS port and the second DMRS port on the two subcarriers are obtained based on the DMRS signals received on the latter two subcarriers. In other words, the DMRS received signal of the intermediate subcarrier will be used twice.

subcarriers

The method embodiments of the present application are described in detail above with reference to Figures 3 to 8. The device embodiments of the present application are described in detail below with reference to Figures 9 to 13. It should be understood that the device embodiments and the method embodiments correspond to each other, and are similar to The description may refer to the method embodiments.

Figure 9 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in Figure 9, the terminal device 400 includes:

The processing unit 410 is used to determine the physical resources occupied by different demodulation reference signal DMRS ports in the transmission bandwidth; wherein the different DMRS ports are divided into M code division multiplexing CDM groups, and each CDM in the M CDM groups The group contains N DMRS ports, M and N are both positive integers, and M≥4, N≥2;

The communication unit 420 is used for DMRS port indication information, and for sending or receiving DMRS on the physical resources occupied by the DMRS port indicated by the DMRS port indication information.

In some embodiments, M=4, and/or, N=2 or N=4.

In some embodiments, the i-th CDM group among the M CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth;

Among them, i and k are both integers, and 1≤i≤M, k=0,1,2,….

In some embodiments, when DMRS occupies 1 orthogonal frequency division multiplexing OFDM symbol and N=2, 2 DMRS ports included in each CDM group of the M CDM groups are used on adjacent subcarriers. The orthogonal coverage code OCC codes are [+1+1] and [+1-1] respectively, or the OCC used by the 2 DMRS ports in adjacent subcarriers contained in each CDM group of the M CDM groups The codes are [+1+1+1] and [+1-1+1] respectively, or the OCC codes used by the two DMRS ports contained in each of the M CDM groups on adjacent subcarriers are respectively are [+1+1+1] and [-1+1-1].

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1], [+1-1], [+1+1] and [+1-1], or the 4 DMRS ports included in each of the M CDM groups are in adjacent sub-ports. The OCC codes used by the carrier are [+1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or the M CDM groups The OCC codes used by the four DMRS ports in each CDM group in adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1]; and/or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports contained in each CDM group of the M CDM groups on the 2 OFDM symbols are [+1+1 respectively. ], [+1+1], [+1-1], [+1-1].

In some embodiments, the first CDM group and the second CDM group among the M CDM groups occupy different numbers of subcarriers in the same physical resource block PRB.

In some embodiments, the first CDM group includes CDM group 0 or CDM group 1 among the M CDM groups, and the second CDM group includes CDM group 2 or CDM group 3 among the M CDM groups.

In some embodiments, CDM Group 0 and CDM Group 1 among the M CDM groups occupy the same number of subcarriers in one PRB, and CDM Group 2 and CDM Group 3 among the M CDM groups occupy one PRB. The number of subcarriers is the same.

In some embodiments, each of the M CDM groups occupies a different number of subcarriers in two adjacent PRBs.

In some embodiments, CDM group 0 and CDM group 1 in the M CDM groups respectively occupy k ₁ subcarriers in odd-numbered PRBs, and respectively occupy k ₂ subcarriers in even-numbered PRBs; and/or,

CDM group 2 and CDM group 3 in the M CDM groups respectively occupy k ₂ subcarriers in odd-numbered PRBs, and respectively occupy k ₁ subcarriers in even-numbered PRBs;

Among them, k ₁ and k ₂ are both positive integers.

In some embodiments, CDM group 0 in the M CDM groups occupies the {1,3,5,7}th subcarriers of odd-numbered PRBs and the {1,3}th subcarriers of even-numbered PRBs on the transmission bandwidth; and /or,

CDM group 1 in the M CDM groups occupies the {2, 4, 6, 8} subcarriers of the odd PRBs and the {2, 4} subcarriers of the even PRBs on the transmission bandwidth; and/or,

CDM group 2 in the M CDM groups occupies the {9,11}th subcarriers of odd-numbered PRBs and the {5,7,9,11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 3 among the M CDM groups occupies the {10, 12}th subcarriers of the odd PRBs and the {6, 8, 10, 12}th subcarriers of the even PRBs on the transmission bandwidth.

In some embodiments, CDM group 0 in the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of odd-numbered PRBs and the {9, 11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and /or,

CDM group 1 in the M CDM groups occupies the {2, 4, 6, 8} subcarriers of the odd PRBs and the {10, 12th} subcarriers of the even PRBs on the transmission bandwidth; and/or,

CDM group 2 in the M CDM groups occupies the {9,11}th subcarriers of odd-numbered PRBs and the {1,3,5,7}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 3 among the M CDM groups occupies the {10, 12}th subcarriers of the odd PRBs and the {2, 4, 6, 8}th subcarriers of the even PRBs on the transmission bandwidth.

In some embodiments, when DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1] and [+1-1].

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1], [+1-1], [+1+1] and [+1-1]; and/or, in the case where DMRS occupies 2 OFDM symbols and N=4, the M CDM The OCC codes used by the 4 DMRS ports included in each CDM group in the 2 OFDM symbols are [+1+1], [+1+1], [+1-1] and [+1 respectively. -1].

In some embodiments, CDM group 0 in the M CDM groups occupies the {1, 3, 5}th subcarrier of each PRB; and/or CDM group 1 in the M CDM groups occupies each PRB The {2, 4, 6}th subcarrier; and/or, CDM group 2 in the M CDM groups occupies the {7, 9, 11}th subcarrier of each PRB; and/or, the M CDM CDM group 3 in the group occupies the {8th, 10th, 12th} subcarriers of each PRB.

In some embodiments, when DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1+1] and [+1-1+1], or the OCC codes used by the two DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1 respectively +1+1] and [-1+1-1].

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or, each of the M CDM groups contains The OCC codes used by the four DMRS ports on adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1]. ;and / or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in the CDM groups in the M CDM groups on the 2 OFDM symbols are [+1+1], [+1+1], [+1-1] and [+1-1].

In some embodiments, the DMRS ports included in the M CDM groups are {1000,1001}, {1002,1003}, {1004,1005}, and {1006,1007} respectively.

In some embodiments, the DMRS ports included in the M CDM groups are {1000,1001,1008,1009}, {1002,1003,1010,1011}, {1004,1005,1012,1013}, {1006, 1007,1014,1015}.

In some embodiments, the DMRS port indication information is also used to indicate the CDM group used for data channel rate matching among the M CDM groups;

The processing unit 410 is also configured to perform rate matching on the data channel according to the physical resources occupied by the CDM group indicated by the DMRS port indication information.

In some embodiments, the DMRS port indication information is carried through one of the following:

Downlink control information DCI, media access control layer control unit MAC CE, radio resource control RRC.

In some embodiments, the above-mentioned communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The above-mentioned processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively to implement the method shown in Figure 3 The corresponding process of the terminal equipment in 200 will not be repeated here for the sake of simplicity.

Figure 10 shows a schematic block diagram of a network device 500 according to an embodiment of the present application. As shown in Figure 10, network device 500 includes:

The processing unit 510 is used to determine the physical resources occupied by different demodulation reference signal DMRS ports in the transmission bandwidth; wherein the different DMRS ports are divided into M code division multiplexing CDM groups, and each CDM in the M CDM groups The group contains N DMRS ports, M and N are both positive integers, and M≥4, N≥2;

The communication unit 520 is configured to send DMRS port indication information, where the DMRS port indication information is used to indicate the target DMRS port used by the terminal device;

The communication unit 520 is also used to send or receive DMRS on the physical resources occupied by the target DMRS port.

In some embodiments, M=4, and/or, N=2 or N=4.

Among them, i and k are both integers, and 1≤i≤M, k=0,1,2,….

Among them, k ₁ and k ₂ are both positive integers.

In some embodiments, when DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are respectively [ +1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1], or 4 of the M CDM groups. The OCC codes used by DMRS ports in adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1] respectively; and /or,

In some embodiments, the DMRS port indication information is also used to indicate the CDM group used for data channel rate matching among the M CDM groups.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the network device 500 are respectively to implement the method shown in Figure 8 The corresponding process of the network equipment in 300 will not be described again for the sake of simplicity.

Figure 11 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in Figure 11 includes a processor 610. The processor 610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

In some embodiments, as shown in Figure 11, communication device 600 may also include memory 620. The processor 610 can call and run the computer program from the memory 620 to implement the method in the embodiment of the present application.

The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

In some embodiments, as shown in Figure 11, the communication device 600 may also include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or Receive information or data from other devices.

Among them, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

In some embodiments, the communication device 600 can be specifically a network device according to the embodiment of the present application, and the communication device 600 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the communication device 600 is not mentioned here. Again.

In some embodiments, the communication device 600 can be a terminal device according to the embodiment of the present application, and the communication device 600 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, this is not mentioned here. Again.

Figure 12 is a schematic structural diagram of the device according to the embodiment of the present application. The device 700 shown in Figure 12 includes a processor 710. The processor 710 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

In some embodiments, as shown in Figure 12, device 700 may also include memory 720. The processor 710 can call and run the computer program from the memory 720 to implement the method in the embodiment of the present application.

The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

In some embodiments, the device 700 may also include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

In some embodiments, the device 700 may also include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

In some embodiments, the device can be applied to the network device in the embodiment of the present application, and the device can implement the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of brevity, the details are not repeated here.

In some embodiments, the device can be applied to the terminal device in the embodiments of the present application, and the device can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, the details will not be described again.

In some embodiments, the devices mentioned in the embodiments of this application may also be chips. For example, it can be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip or a system-on-a-chip, etc.

Figure 13 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 13 , the communication system 800 includes a terminal device 810 and a network device 820 .

Among them, the terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be mentioned here. Repeat.

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip and has signal processing capabilities. During the implementation process, each step of the above method embodiment can be completed through an integrated logic circuit of hardware in the processor or instructions in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available processors. Programmed logic devices, discrete gate or transistor logic devices, discrete hardware components. Each method, step and logical block diagram disclosed in the embodiment of this application can be implemented or executed. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module can be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other mature storage media in this field. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

It should be understood that the above memory is an exemplary but not restrictive description. For example, the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiment of the present application. For the sake of simplicity, I won’t go into details here.

In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of simplicity, I won’t go into details here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

In some embodiments, the computer program product can be applied to the network equipment in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For simplicity, in This will not be described again.

In some embodiments, the computer program product can be applied to the terminal device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For simplicity, in This will not be described again.

An embodiment of the present application also provides a computer program.

In some embodiments, the computer program can be applied to the network equipment in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For the sake of brevity, no further details will be given here.

In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, no further details will be given here.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of this understanding, the technical solution of the present application is essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

A method of wireless communication, characterized by including:

The terminal equipment determines the physical resources occupied by different demodulation reference signal DMRS ports in the transmission bandwidth; wherein, the different DMRS ports are divided into M code division multiplexing CDM groups, and each CDM group in the M CDM groups contains N DMRS ports, M and N are both positive integers, and M≥4, N≥2;

The terminal device receives DMRS port indication information, and the terminal device sends or receives DMRS on the physical resource occupied by the DMRS port indicated by the DMRS port indication information.
The method of claim 1, characterized in that:

M=4, and/or, N=2 or N=4.
The method of claim 2, characterized in that:

The i-th CDM group among the M CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth;

Among them, i and k are both integers, and 1≤i≤M, k=0,1,2,….
The method of claim 3, characterized in that:

In the case where DMRS occupies 1 orthogonal frequency division multiplexing OFDM symbol and N=2, the orthogonal coverage codes used by the 2 DMRS ports included in each of the M CDM groups on adjacent subcarriers The OCC codes are [+1+1] and [+1-1] respectively, or the OCC codes used by the 2 DMRS ports contained in each CDM group in adjacent subcarriers in the M CDM groups are [ +1+1+1] and [+1-1+1], or the OCC codes used by the two DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+ 1+1+1] and [-1+1-1].
The method of claim 3, characterized in that:

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1] respectively. , [+1-1], [+1+1] and [+1-1], or the OCC used by the 4 DMRS ports contained in each of the M CDM groups on adjacent subcarriers The codes are [+1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1] respectively, or, each of the M CDM groups The OCC codes used by the four DMRS ports included in the CDM group on adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1 respectively. +1-1]; and/or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in each of the M CDM groups on the 2 OFDM symbols are [+1 +1], [+1+1], [+1-1], [+1-1].
The method of claim 2, wherein the first CDM group and the second CDM group among the M CDM groups occupy different numbers of subcarriers in the same physical resource block (PRB).
The method of claim 6, characterized in that:

The first CDM group includes CDM group 0 or CDM group 1 among the M CDM groups, and the second CDM group includes CDM group 2 or CDM group 3 among the M CDM groups.
The method according to claim 6 or 7, characterized in that,

CDM Group 0 and CDM Group 1 among the M CDM groups occupy the same number of subcarriers in one PRB, and CDM Group 2 and CDM Group 3 among the M CDM groups occupy the same number of subcarriers in one PRB. same.
The method according to any one of claims 6 to 8, characterized in that each of the M CDM groups occupies a different number of subcarriers in two adjacent PRBs.
The method of claim 9, characterized in that:

CDM group 0 and CDM group 1 among the M CDM groups respectively occupy k 1 subcarriers in odd-numbered PRBs, and respectively occupy k 2 subcarriers in even-numbered PRBs; and/or,

CDM group 2 and CDM group 3 among the M CDM groups respectively occupy k 2 subcarriers in odd-numbered PRBs, and respectively occupy k 1 subcarriers in even-numbered PRBs;

Among them, k 1 and k 2 are both positive integers.
The method according to any one of claims 6 to 10, characterized in that,

CDM group 0 among the M CDM groups occupies the {1,3,5,7}th subcarriers of odd-numbered PRBs and the {1,3}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 1 among the M CDM groups occupies the {2, 4, 6, 8}-th subcarriers of odd-numbered PRBs and the {2, 4}-th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 2 among the M CDM groups occupies the {9,11}th subcarriers of odd-numbered PRBs and the {5,7,9,11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 3 among the M CDM groups occupies the {10, 12}th subcarriers of odd-numbered PRBs and the {6, 8, 10, 12}th subcarriers of even-numbered PRBs on the transmission bandwidth.
The method according to any one of claims 6 to 10, characterized in that,

CDM group 0 among the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of odd-numbered PRBs and the {9, 11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 1 among the M CDM groups occupies the {2, 4, 6, 8}-th subcarriers of odd-numbered PRBs and the {10, 12th}-th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 2 among the M CDM groups occupies the {9,11}th subcarriers of odd-numbered PRBs and the {1,3,5,7}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 3 among the M CDM groups occupies the {10, 12}th sub-carriers of odd-numbered PRBs and the {2, 4, 6, 8}-th subcarriers of even-numbered PRBs on the transmission bandwidth.
The method according to claim 11 or 12, characterized in that,

When DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+1+1] respectively. and [+1-1].
The method according to claim 11 or 12, characterized in that,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1] respectively. , [+1-1], [+1+1] and [+1-1]; and/or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in each of the M CDM groups on the 2 OFDM symbols are [+1 +1], [+1+1], [+1-1] and [+1-1].
The method of claim 2, characterized in that:

CDM group 0 among the M CDM groups occupies the {1, 3, 5}th subcarrier of each PRB; and/or,

CDM group 1 among the M CDM groups occupies the {2, 4, 6}th subcarrier of each PRB; and/or,

CDM group 2 among the M CDM groups occupies the {7, 9, 11}th subcarrier of each PRB; and/or,

CDM group 3 among the M CDM groups occupies the {8, 10, 12}th subcarrier of each PRB.
The method of claim 15, characterized in that:

When DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the two DMRS ports in adjacent subcarriers in each CDM group of the M CDM groups are [+1+1+ 1] and [+1-1+1], or the OCC codes used by the 2 DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1+1 respectively ] and [-1+1-1].
The method of claim 15, characterized in that:

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+1+1+ 1], [+1-1+1], [+1+1+1] and [+1-1+1], or 4 DMRS ports included in each CDM group of the M CDM groups The OCC codes used in adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1] respectively; and/or ,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in the CDM groups in the M CDM groups on the 2 OFDM symbols are [+1+1 respectively. ], [+1+1], [+1-1] and [+1-1].
The method according to claim 4, 13 or 16, characterized in that the DMRS ports included in the M CDM groups are {1000,1001}, {1002,1003}, {1004,1005}, {1006, respectively. 1007}.
The method according to claim 5, 14 or 17, characterized in that,

The DMRS ports included in the M CDM groups are {1000,1001,1008,1009}, {1002,1003,1010,1011}, {1004,1005,1012,1013}, {1006,1007,1014,1015 }.
The method according to any one of claims 1 to 19, characterized in that,

The DMRS port indication information is also used to indicate the CDM group used for data channel rate matching among the M CDM groups;

The method also includes:

The terminal device performs rate matching on the data channel according to the physical resources occupied by the CDM group indicated by the DMRS port indication information.
The method according to any one of claims 1 to 20, characterized in that,

The DMRS port indication information is carried through one of the following:

Downlink control information DCI, media access control layer control unit MAC CE, radio resource control RRC.
A method of wireless communication, characterized by including:

The network device determines the physical resources occupied by different demodulation reference signal DMRS ports in the transmission bandwidth; wherein the different DMRS ports are divided into M code division multiplexing CDM groups, and each CDM group in the M CDM groups contains N DMRS ports, M and N are both positive integers, and M≥4, N≥2;

The network device sends DMRS port indication information, where the DMRS port indication information is used to indicate the target DMRS port used by the terminal device;

The network device sends or receives DMRS on the physical resources occupied by the target DMRS port.
The method of claim 22, wherein:

M=4, and/or, N=2 or N=4.
The method of claim 23, characterized in that:

The i-th CDM group among the M CDM groups occupies the 4k+i-th subcarrier on the transmission bandwidth;

Among them, i and k are both integers, and 1≤i≤M, k=0,1,2,….
The method of claim 24, wherein:

In the case where DMRS occupies 1 orthogonal frequency division multiplexing OFDM symbol and N=2, the orthogonal coverage codes used by the 2 DMRS ports included in each of the M CDM groups on adjacent subcarriers The OCC codes are [+1+1] and [+1-1] respectively, or the OCC codes used by the 2 DMRS ports contained in each CDM group in adjacent subcarriers in the M CDM groups are [ +1+1+1] and [+1-1+1], or the OCC codes used by the two DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+ 1+1+1] and [-1+1-1].
The method of claim 24, wherein:

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1] respectively. , [+1-1], [+1+1] and [+1-1], or the OCC used by the 4 DMRS ports contained in each of the M CDM groups on adjacent subcarriers The codes are [+1+1+1], [+1-1+1], [+1+1+1] and [+1-1+1] respectively, or, each of the M CDM groups The OCC codes used by the four DMRS ports included in the CDM group on adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1 respectively. +1-1]; and/or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in each of the M CDM groups on the 2 OFDM symbols are [+1 +1], [+1+1], [+1-1], [+1-1].
The method of claim 23, wherein the first CDM group and the second CDM group among the M CDM groups occupy different numbers of subcarriers in the same physical resource block (PRB).
The method of claim 27, wherein:

The first CDM group includes CDM group 0 or CDM group 1 among the M CDM groups, and the second CDM group includes CDM group 2 or CDM group 3 among the M CDM groups.
The method of claim 27 or 28, characterized in that,

CDM Group 0 and CDM Group 1 among the M CDM groups occupy the same number of subcarriers in one PRB, and CDM Group 2 and CDM Group 3 among the M CDM groups occupy the same number of subcarriers in one PRB. same.
The method according to any one of claims 27 to 29, characterized in that each of the M CDM groups occupies a different number of subcarriers in two adjacent PRBs.
The method of claim 30, wherein:

CDM group 0 and CDM group 1 among the M CDM groups respectively occupy k 1 subcarriers in odd-numbered PRBs, and respectively occupy k 2 subcarriers in even-numbered PRBs; and/or,

CDM group 2 and CDM group 3 among the M CDM groups respectively occupy k 2 subcarriers in odd-numbered PRBs, and respectively occupy k 1 subcarriers in even-numbered PRBs;

Among them, k 1 and k 2 are both positive integers.
The method according to any one of claims 27 to 31, characterized in that,

CDM group 0 among the M CDM groups occupies the {1,3,5,7}th subcarriers of odd-numbered PRBs and the {1,3}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 1 among the M CDM groups occupies the {2, 4, 6, 8}-th subcarriers of odd-numbered PRBs and the {2, 4}-th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 2 among the M CDM groups occupies the {9,11}th subcarriers of odd-numbered PRBs and the {5,7,9,11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 3 among the M CDM groups occupies the {10, 12}th subcarriers of odd-numbered PRBs and the {6, 8, 10, 12}th subcarriers of even-numbered PRBs on the transmission bandwidth.
The method according to any one of claims 27 to 31, characterized in that,

CDM group 0 among the M CDM groups occupies the {1, 3, 5, 7}th subcarriers of odd-numbered PRBs and the {9, 11}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 1 among the M CDM groups occupies the {2, 4, 6, 8}-th subcarriers of odd-numbered PRBs and the {10, 12th}-th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 2 among the M CDM groups occupies the {9,11}th subcarriers of odd-numbered PRBs and the {1,3,5,7}th subcarriers of even-numbered PRBs on the transmission bandwidth; and/or,

CDM group 3 among the M CDM groups occupies the {10, 12}th sub-carriers of odd-numbered PRBs and the {2, 4, 6, 8}-th subcarriers of even-numbered PRBs on the transmission bandwidth.
The method of claim 32 or 33, characterized in that,

When DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the 2 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+1+1] respectively. and [+1-1].
The method of claim 32 or 33, characterized in that,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1] respectively. , [+1-1], [+1+1] and [+1-1]; and/or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in each of the M CDM groups on the 2 OFDM symbols are [+1 +1], [+1+1], [+1-1] and [+1-1].
The method of claim 23, characterized in that:

CDM group 0 among the M CDM groups occupies the {1, 3, 5}th subcarrier of each PRB; and/or,

CDM group 1 among the M CDM groups occupies the {2, 4, 6}th subcarrier of each PRB; and/or,

CDM group 2 among the M CDM groups occupies the {7, 9, 11}th subcarrier of each PRB; and/or,

CDM group 3 among the M CDM groups occupies the {8, 10, 12}th subcarrier of each PRB.
The method of claim 36, wherein:

When DMRS occupies 1 OFDM symbol and N=2, the OCC codes used by the two DMRS ports in adjacent subcarriers in each CDM group of the M CDM groups are [+1+1+ 1] and [+1-1+1], or the OCC codes used by the 2 DMRS ports contained in each of the M CDM groups on adjacent subcarriers are [+1+1+1 respectively ] and [-1+1-1].
The method of claim 36, wherein:

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports in adjacent subcarriers of each CDM group in the M CDM groups are [+1+1+ 1], [+1-1+1], [+1+1+1] and [+1-1+1], or the 4 DMRS ports included in the CDM group among the M CDM groups are in the corresponding The OCC codes used by adjacent subcarriers are [+1+1+1], [-1+1-1], [+1+1+1] and [-1+1-1] respectively; and/or,

When DMRS occupies 2 OFDM symbols and N=4, the OCC codes used by the 4 DMRS ports included in the CDM groups in the M CDM groups on the 2 OFDM symbols are [+1+1 respectively. ], [+1+1], [+1-1] and [+1-1].
The method according to claim 25, 34 or 37, characterized in that the DMRS ports included in the M CDM groups are {1000,1001}, {1002,1003}, {1004,1005}, {1006, respectively. 1007}.
The method of claim 26, 35 or 38, characterized in that,

The DMRS ports included in the M CDM groups are {1000,1001,1008,1009}, {1002,1003,1010,1011}, {1004,1005,1012,1013}, {1006,1007,1014,1015 }.
The method according to any one of claims 22 to 40, characterized in that,

The DMRS port indication information is also used to indicate the CDM group used for data channel rate matching among the M CDM groups.
The method according to any one of claims 22 to 41, characterized in that,

The DMRS port indication information is carried through one of the following:

Downlink control information DCI, media access control layer control unit MAC CE, radio resource control RRC.
A terminal device, characterized by including:

A processing unit used to determine the physical resources occupied by different demodulation reference signal DMRS ports in the transmission bandwidth; wherein the different DMRS ports are divided into M code division multiplexing CDM groups, and each CDM in the M CDM groups The group contains N DMRS ports, M and N are both positive integers, and M≥4, N≥2;

A communication unit, configured to receive DMRS port indication information, and to send or receive DMRS on the physical resources occupied by the DMRS port indicated by the DMRS port indication information.
A network device, characterized by including:

A processing unit used to determine the physical resources occupied by different demodulation reference signal DMRS ports in the transmission bandwidth; wherein the different DMRS ports are divided into M code division multiplexing CDM groups, and each CDM in the M CDM groups The group contains N DMRS ports, M and N are both positive integers, and M≥4, N≥2;

A communication unit configured to send DMRS port indication information, wherein the DMRS port indication information is used to indicate the target DMRS port used by the terminal device;

The communication unit is also configured to send or receive DMRS on the physical resources occupied by the target DMRS port.
A terminal device, characterized in that it includes: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the steps as claimed in the right The method of any one of claims 1 to 21.
A network device, characterized in that it includes: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the network device executes as claimed The method of any one of claims 22 to 42.
A chip, characterized in that it includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 21.
A chip, characterized in that it includes: a processor, configured to call and run a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 22 to 42.
A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program causing the computer to execute the method according to any one of claims 1 to 21.
A computer-readable storage medium, characterized in that it is used to store a computer program, the computer program causing the computer to execute the method according to any one of claims 22 to 42.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 1 to 21.
A computer program product, characterized by comprising computer program instructions, which cause a computer to execute the method according to any one of claims 22 to 42.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 21.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 22 to 42.