Communication method, communication apparatus, communication system, communication device, storage medium, and program product

Abstract

The embodiment of the invention provides a communication method, a communication device, a communication system, a communication device, a storage medium and a program product, and relates to the technical field of wireless communication and the like. A network device sends indication information to a first terminal device and a second terminal device; wherein the first terminal equipment and the second terminal equipment access the network equipment at the same resource; the indication information is used for indicating the enabling of the expanded DMRS port and the first time domain resource occupied by the expanded DMRS port. According to the communication method, the communication device, the communication system, the communication equipment, the storage medium and the program product provided by the embodiment of the invention, the terminal equipment can flexibly expand the number of the orthogonal DMRS ports based on the indication information; therefore, the network device can simultaneously provide services for the first terminal device and the second terminal device accessing the network device based on the same resource.

Description

Technical Field

[0001] The embodiments of the present application relate to technical fields such as wireless communications, and in particular, to a communication method, a communication apparatus, a communication system, a communication device, a storage medium, and a program product. Background Art

[0002] The network device can communicate with the terminal device based on the Physical Downlink Shared Channel (PDSCH). The PDSCH can distinguish the data of different terminal devices through different ports of the Demodulation Reference Signal (DMRS).

[0003] In satellite-to-ground communication scenarios, a single satellite beam covers a large area, and multiple terminal devices can be connected to a satellite beam at the same time. In the same beam, the number of terminal devices allocated with the same frequency resources may exceed the number of DMRS ports of PDSCH, resulting in a limit on the number of terminal devices that can be served simultaneously by the base station. Summary of the invention

[0004] The embodiments of the present application provide a communication method, a communication apparatus, a communication system, a communication device, a storage medium and a program product for flexibly expanding the number of orthogonal DMRS ports so that a network device can simultaneously provide services for a first terminal device and a second terminal device that access the network device based on the same resources.

[0005] In a first aspect, an embodiment of the present application provides a communication method, which is applied to a network device, and the method includes:

[0006] Sending instruction information to the first terminal device and the second terminal device;

[0007] Among them, the first terminal device and the second terminal device access the network device in the same resource; the indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port.

[0008] In the above technical solution, the network device can instruct the first terminal device and the second terminal device through indication information to enable the extended DMRS port, thereby realizing flexible expansion of the number of orthogonal DMRS ports. The network device also indicates the first time domain resource occupied by the extended DMRS port to the first terminal device and the second terminal device through indication information, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, thereby enabling the network device to provide services for the first terminal device and the second terminal device that access the network device based on the same resources at the same time through the extended DMRS port.

[0009] In some embodiments, the indication information is further used to indicate at least one of the following:

[0010] instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or,

[0011] Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0012] In the above technical solution, by instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device, or instructing the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device, interference of time domain resources and signals between the first terminal device and the second terminal device can be avoided, so that the first terminal device and the second terminal device can adjust their own resource mapping in time and can perform channel estimation more accurately.

[0013] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; or,

[0014] The extended DMRS port is the DMRS port corresponding to the second terminal device.

[0015] In the above technical solution, the network device can flexibly configure the extended DMRS port to the first terminal device or the second terminal device.

[0016] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; the method further includes:

[0017] Send first configuration information to the first terminal device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0018] In the above technical solution, the network device can send first configuration information to the first terminal device, so that the first terminal device can quickly determine the time domain resources occupied by the DMRS port corresponding to the first terminal device according to the first configuration information.

[0019] In some embodiments, the extended DMRS port is a DMRS port corresponding to the second terminal device; the method further includes:

[0020] Send second configuration information to the first terminal device, the second configuration information including the port number corresponding to the first terminal device, resource information of the second time domain resources occupied by the DMRS port corresponding to the first terminal device, and resource information of the first time domain resources.

[0021] In the above technical solution, the network device can send second configuration information to the second terminal device, so that the second terminal device can quickly determine the time domain resources occupied by the DMRS port corresponding to the second terminal device according to the second configuration information.

[0022] In some embodiments, the resource information of the first time domain resource includes the serial number of the symbol occupied by the first time domain resource.

[0023] In the above technical solution, the first terminal device can quickly determine the position of the first time domain resource in the time domain of the time slot according to the sequence number of the symbol occupied by the first time domain resource.

[0024] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0025] In the above technical solution, the second terminal device can quickly determine the position of the second time domain resource in the time domain of the time slot according to the sequence number of the first symbol occupied by the second time domain resource and the number of symbols occupied by the second time domain resource.

[0026] In some embodiments, the indication information includes first indication information and second indication information, wherein:

[0027] The first indication information is used to indicate enabling the extended DMRS port;

[0028] The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

[0029] In the above technical solution, the network device can instruct the first terminal device and the second terminal device to enable the extended DMRS port through the first indication information to realize the flexible expansion of the number of orthogonal DMRS ports; and indicate the first time domain resource occupied by the extended DMRS port through the second indication information, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, so that the network device can provide services for the first terminal device and the second terminal device that access the network device based on the same resources at the same time through the extended DMRS port.

[0030] In some embodiments, sending indication information to the first terminal device and the second terminal includes:

[0031] Sending a first message to the first terminal device and the second terminal device;

[0032] The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0033] In the above technical solution, the network device can indicate to the first terminal device and the second terminal device through the first field in the first message to enable the extended DMRS port to achieve flexible expansion of the number of orthogonal DMRS ports; the first time domain resource occupied by the extended DMRS port is indicated by the second field in the first message, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, so that the network device can provide services to the first terminal device and the second terminal device that access the network device based on the same resources at the same time through the extended DMRS port.

[0034] In some embodiments, the method further comprises at least one of the following:

[0035] In the case where it is determined that the first terminal device needs to perform time domain interpolation processing of the joint time slot, the first resource scheduling strategy corresponding to the first terminal device is configured as follows: the resource block RB sequence number set that can be scheduled by the first terminal device in the next time slot is a subset of the RB sequence number set that can be scheduled by the first terminal device in the current time slot;

[0036] When it is determined that the second terminal device needs to perform time domain interpolation processing of the joint time slot, the second resource scheduling strategy corresponding to the second terminal device is configured as follows: the set of RB sequence numbers that can be scheduled by the second terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the second terminal device in the current time slot.

[0037] In the above technical scheme, the network device can configure the resource scheduling information of the first terminal device when performing time domain interpolation processing of the joint time slot based on the first resource scheduling strategy, and configure the resource scheduling information of the second terminal device when performing time domain interpolation processing of the joint time slot based on the second resource scheduling strategy, so that the first terminal device and the second terminal device can perform time domain interpolation processing of the joint time slot normally and quickly based on the resource scheduling information.

[0038] In some embodiments, the method further comprises at least one of the following:

[0039] Sending a second message to the first terminal device, where the second message includes the first resource scheduling strategy, where the first resource scheduling strategy is used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot;

[0040] A third message is sent to the second terminal device, where the third message includes the second resource scheduling strategy, and the second resource scheduling strategy is used to indicate resource scheduling of the second terminal device when performing time domain interpolation processing of the joint time slot.

[0041] In the above technical solution, the network device can instruct the first terminal device on resource scheduling when performing time domain interpolation processing of the joint time slot through the first resource scheduling strategy in the second message, and instruct the second terminal device on resource scheduling when performing time domain interpolation processing of the joint time slot through the second resource scheduling strategy in the third message, so that the first terminal device and the second terminal device can perform time domain interpolation processing of the joint time slot normally and quickly.

[0042] In a second aspect, an embodiment of the present application provides a communication method, applied to a first terminal device, the method comprising:

[0043] Receiving instruction information sent by the network device;

[0044] The indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port, and there is a second terminal device accessing the network device in the same resource as the first terminal device.

[0045] In the above technical solution, the first terminal device can enable the extended DMRS port based on the indication information, and determine the first time domain resource occupied by the extended DMRS port according to the indication information, so that the first terminal device can correctly obtain the DMRS without introducing a new reference signal.

[0046] In some embodiments, the indication information is further used to indicate at least one of the following:

[0047] instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or,

[0048] Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0049] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; or,

[0050] The extended DMRS port is the DMRS port corresponding to the second terminal device.

[0051] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; the method further includes:

[0052] Receive first configuration information sent by the network device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0053] In some embodiments, the extended DMRS port is a DMRS port corresponding to the second terminal device; the method further includes:

[0054] Receive second configuration information sent by the network device, wherein the second configuration information includes a port number corresponding to the first terminal device, resource information of a second time domain resource occupied by a DMRS port corresponding to the first terminal device, and resource information of the first time domain resource.

[0055] In some embodiments, the resource information of the first time domain resource includes the serial number of the symbol occupied by the first time domain resource.

[0056] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0057] In some embodiments, the indication information includes first indication information and second indication information, wherein:

[0058] The first indication information is used to indicate enabling the extended DMRS port;

[0059] The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

[0060] In some embodiments, receiving indication information sent by a network device includes:

[0061] Receiving a first message sent by the network device;

[0062] The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0063] In some embodiments, the method further comprises:

[0064] Receiving the DMRS corresponding to the first terminal device on the time domain resources occupied by the DMRS port corresponding to the first terminal device;

[0065] Receiving data corresponding to the first terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the second terminal device;

[0066] The data corresponding to the first terminal device is demodulated and processed according to the DMRS corresponding to the first terminal device.

[0067] In some embodiments, when the first terminal device performs time domain interpolation processing of the joint time slot, the set of resource block RB sequence numbers that the first terminal device can schedule in the next time slot is a subset of the set of RB sequence numbers that the first terminal device can schedule in the current time slot.

[0068] In some embodiments, the method further comprises:

[0069] receiving a second message sent by the network device, wherein the second message includes a first resource scheduling strategy, and the first resource scheduling strategy is used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot;

[0070] When performing time domain interpolation processing of the joint time slot, the RB sequence number set that the first terminal device can schedule in the next time slot is determined based on the first resource scheduling strategy in the second message and the RB sequence number set scheduled by the first terminal device in the current time slot.

[0071] In some embodiments, the first resource scheduling strategy is: the set of RB sequence numbers that can be scheduled by the first terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the first terminal device in the current time slot.

[0072] In a third aspect, an embodiment of the present application provides a communication device, which is applied to a network device, and the communication device includes:

[0073] A transceiver module, used to send indication information to the first terminal device and the second terminal device;

[0074] Among them, the first terminal device and the second terminal device access the network device in the same resource; the indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port.

[0075] In some embodiments, the indication information is further used to indicate at least one of the following:

[0076] instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or,

[0077] Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0078] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; or,

[0079] The extended DMRS port is the DMRS port corresponding to the second terminal device.

[0080] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; and the transceiver module is further used for:

[0081] Send first configuration information to the first terminal device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0082] In some embodiments, the extended DMRS port is a DMRS port corresponding to the second terminal device; and the transceiver module is further used for:

[0083] Send second configuration information to the first terminal device, the second configuration information including the port number corresponding to the first terminal device, resource information of the second time domain resources occupied by the DMRS port corresponding to the first terminal device, and resource information of the first time domain resources.

[0084] In some embodiments, the resource information of the first time domain resource includes the serial number of the symbol occupied by the first time domain resource.

[0085] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0086] In some embodiments, the indication information includes first indication information and second indication information, wherein:

[0087] The first indication information is used to indicate enabling the extended DMRS port;

[0088] The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

[0089] In some embodiments, the transceiver module is specifically used for:

[0090] Sending a first message to the first terminal device and the second terminal device;

[0091] The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0092] In some embodiments, the communication device further includes a processing module, wherein the processing module is configured to:

[0093] In the case where it is determined that the first terminal device needs to perform time domain interpolation processing of the joint time slot, the first resource scheduling strategy corresponding to the first terminal device is configured as follows: the resource block RB sequence number set that can be scheduled by the first terminal device in the next time slot is a subset of the RB sequence number set that can be scheduled by the first terminal device in the current time slot; and / or,

[0094] When it is determined that the second terminal device needs to perform time domain interpolation processing of the joint time slot, the second resource scheduling strategy corresponding to the second terminal device is configured as follows: the set of RB sequence numbers that can be scheduled by the second terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the second terminal device in the current time slot.

[0095] In some embodiments, the transceiver module is further used to:

[0096] sending a second message to the first terminal device, where the second message includes the first resource scheduling strategy, where the first resource scheduling strategy is used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot; and / or,

[0097] A third message is sent to the second terminal device, where the third message includes the second resource scheduling strategy, and the second resource scheduling strategy is used to indicate resource scheduling of the second terminal device when performing time domain interpolation processing of the joint time slot.

[0098] In a fourth aspect, an embodiment of the present application provides a communication device, applied to a first terminal device, the communication device comprising:

[0099] A transceiver module, used for receiving instruction information sent by a network device;

[0100] The indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port, and there is a second terminal device accessing the network device in the same resource as the first terminal device.

[0101] In some embodiments, the indication information is further used to indicate at least one of the following:

[0102] instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or,

[0103] Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0104] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; or,

[0105] The extended DMRS port is the DMRS port corresponding to the second terminal device.

[0106] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; and the transceiver module is further used for:

[0107] Receive first configuration information sent by the network device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0108] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; and the transceiver module is further used for:

[0109] Receive second configuration information sent by the network device, wherein the second configuration information includes a port number corresponding to the first terminal device, resource information of a second time domain resource occupied by a DMRS port corresponding to the first terminal device, and resource information of the first time domain resource.

[0110] In some embodiments, the resource information of the first time domain resource includes the serial number of the symbol occupied by the first time domain resource.

[0111] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0112] In some embodiments, the indication information includes first indication information and second indication information, wherein:

[0113] The first indication information is used to indicate enabling the extended DMRS port;

[0114] The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

[0115] In some embodiments, the transceiver module is specifically used for:

[0116] Receiving a first message sent by the network device;

[0117] The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0118] In some embodiments, the communication device further includes a processing module, wherein:

[0119] The transceiver module is further configured to receive the DMRS corresponding to the first terminal device on the time domain resources occupied by the DMRS port corresponding to the first terminal device;

[0120] The transceiver module is used to receive data corresponding to the first terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the second terminal device;

[0121] The processing module is used to demodulate the data corresponding to the first terminal device according to the DMRS corresponding to the first terminal device.

[0122] In some embodiments, when the first terminal device performs time domain interpolation processing of a joint time slot, the set of RB sequence numbers that the first terminal device can schedule in the next time slot is a subset of the set of RB sequence numbers that the first terminal device can schedule in the current time slot.

[0123] In some embodiments, the transceiver module is further used to receive a second message sent by the network device, the second message includes a first resource scheduling strategy, and the first resource scheduling strategy is used to instruct the first terminal device to perform resource scheduling when performing time domain interpolation processing of the joint time slot;

[0124] The processing module is used to determine the RB sequence number set that can be scheduled by the first terminal device in the next time slot according to the first resource scheduling strategy in the second message and the RB sequence number set scheduled by the first terminal device in the current time slot when performing time domain interpolation processing of the joint time slot.

[0125] In some embodiments, the first resource scheduling strategy is: a set of resource block RB sequence numbers that can be scheduled by the first terminal device in the next time slot is a subset of a set of RB sequence numbers that can be scheduled by the first terminal device in the current time slot.

[0126] In a fifth aspect, an embodiment of the present application provides a communication system, including a terminal device and a network device;

[0127] The network device is used to execute the communication method described in any one of the first aspects;

[0128] The terminal device is used to execute the communication method described in any one of the second aspects.

[0129] In a sixth aspect, an embodiment of the present application provides a communication device, including: a memory and a processor,

[0130] The memory stores computer-executable instructions;

[0131] The processor executes the computer-executable instructions stored in the memory to implement the communication method as described in any one of the first aspects.

[0132] In a seventh aspect, an embodiment of the present application provides a communication device, including a memory and a processor,

[0133] The memory stores computer-executable instructions;

[0134] The processor executes the computer-executable instructions stored in the memory to implement the communication method as described in any one of the second aspects.

[0135] In an eighth aspect, an embodiment of the present application provides a storage medium, wherein instructions are stored in the storage medium, and when the instructions are executed on a communication device, the communication method is used to implement any one of the communication methods described in the first aspect.

[0136] In a ninth aspect, an embodiment of the present application provides a storage medium, wherein instructions are stored in the storage medium, and when the instructions are executed on a communication device, they are used to implement the communication method as described in any one of the second aspects.

[0137] In the tenth aspect, an embodiment of the present application provides a computer program product, including a program and / or instructions. When the program and / or instructions are executed by a communication device, the communication device executes the communication method as described in any one of the first aspects.

[0138] In the eleventh aspect, an embodiment of the present application provides a computer program product, including a program and / or instructions. When the program and / or instructions are executed by a communication device, the communication device executes the communication method as described in any one of the second aspects.

[0139] The communication method, communication apparatus, communication system, communication device, storage medium and program product provided by the embodiments of the present application, the network device sends indication information to the first terminal device and the second terminal device, wherein the first terminal device and the second terminal device access the network device on the same resource, and the indication information can be used to indicate the DMRS port that enables expansion and the first time domain resource occupied by the expanded DMRS port. The method can enable the terminal device to flexibly expand the number of orthogonal DMRS ports based on the indication information, so that the network device can provide services for the first terminal device and the second terminal device that access the network device based on the same resource at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0140] Figure 1A A schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0141] Figure 1B An exemplary time-frequency resource mapping diagram of Type 1 and Type 2 DMRS under a single symbol type provided in an embodiment of the present application;

[0142] Figure 1CAn exemplary time-frequency resource mapping diagram of Type 1 and Type 2 DMRS under the dual symbol type provided in an embodiment of the present application;

[0143] Figure 1D An exemplary time-frequency resource mapping diagram of a pre-DMRS and an additional DMRS of a dual-symbol type Type 2 provided in an embodiment of the present application;

[0144] Figure 2 is one of the exemplary schematic diagrams of a communication method according to an embodiment of the present application;

[0145] Figure 3 A schematic diagram of an extended DMRS port provided in an embodiment of the present application;

[0146] Figure 4 This is a second exemplary schematic diagram of a communication method according to an embodiment of the present application;

[0147] Figure 5 A schematic diagram of time-frequency resource mapping of a first terminal device provided in an embodiment of the present application;

[0148] Figure 6 A schematic diagram of time-frequency resource mapping of a second terminal device provided in an embodiment of the present application;

[0149] Figure 7 This is a third exemplary schematic diagram of a communication method according to an embodiment of the present application;

[0150] Figure 8 One of the structural schematic diagrams of the communication device provided in the embodiment of the present application;

[0151] Fig. 9 A second structural diagram of a communication device provided in an embodiment of the present application;

[0152] Fig.10 An exemplary structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0153] First, the relevant terms involved in this application are explained.

[0154] Network equipment refers to network equipment located in space and capable of communicating with terminal equipment. Network equipment may also be called space base station, satellite-borne base station, satellite, satellite communication node, satellite communication module, or base station. The network equipment may also be called access network equipment or wireless access network equipment. The network device may be a base station (Base Transceiver Station, BTS) in a global system for mobile communication (Global System for Mobile Communication, GSM) or code division multiple access (Code Division Multiple Access, CDMA) communication system carried by satellite, a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system carried by satellite, an evolved base station (evolved NodeB, eNB or eNodeB) in an LTE system carried by satellite, a base station (gNB) in a 5G network carried by satellite, a base station in a future network (such as a 6G network) after the 5G network carried by satellite, a base station in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network carried by satellite, a transmission reception point (TRP) carried by satellite, a wireless controller in a cloud radio access network (CRAN) scenario carried by satellite, an urban base station, a micro base station, a pico base station, or a femto base station, etc. carried by satellite.

[0155] Terminal equipment refers to equipment that includes wireless transceiver functions and can cooperate with network equipment to provide communication services to users. Terminal equipment can also be called user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile equipment, user terminal equipment, wireless communication equipment, user agent or user device, etc. At present, some examples of terminal devices include: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, ship-mounted devices, wearable devices, etc.

[0156] In this application, the term "include" and its variations may refer to non-restrictive inclusion; the term "or" and its variations may refer to "and / or". "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0157] In this application, the terms "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In this application, the term "at least one" refers to one or more, and "plurality" refers to two or more. In this application, the term "at least one of the following" or its similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0158] In this application, words such as "in some embodiments", "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described in this application as "in some embodiments", "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplary" or "for example" is intended to present related concepts in a concrete way. In this application, words such as "under the condition of" or "when" represent a condition.

[0159] In some embodiments, devices and equipment may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0160] In some embodiments, obtaining data, information, etc. may comply with local laws and regulations.

[0161] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0162] Figure 1A This is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. Figure 1A , the communication system 100 includes a network device 101 (e.g., a base station), a first terminal device 102 (e.g., UE1), and a second terminal device 103 (e.g., UE2). The network device 101 can send data (e.g., downlink data) to the first terminal device 102 through a data channel (e.g., PDSCH) corresponding to the first terminal device 102; the network device 101 can also send data (e.g., downlink data) to the second terminal device 103 through a data channel (e.g., PDSCH) corresponding to the second terminal device 103.

[0163] It should be understood that Figure 1A The number and form of devices shown are for illustrative purposes only and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more terminal devices and two or more network devices may be included. Figure 1A The communication system shown is only shown by taking a network device 101 and two terminal devices (a first terminal device 102 and a second terminal device 103) as an example.

[0164] It can be understood that the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation on the technical solution proposed in the embodiment of the present application. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present application is also applicable to similar technical problems.

[0165] The following embodiments of the present application can be applied to Figure 1A The communication system 100, or a portion thereof, is shown but is not limited thereto. Figure 1A The various entities shown are examples, and the communication system may include Figure 1A All or part of the subject, and may also include Figure 1A The number and form of other entities are arbitrary, each entity can be physical or virtual, the connection relationship between the entities is illustrative, the entities can be connected or disconnected, the connection can be in any way, it can be direct or indirect, and it can be wired or wireless.

[0166] exist Figure 1A In the communication system shown, the network device 101 can instruct the first terminal device 102 to receive the time-frequency resources of the DMRS through the corresponding PDSCH, or the network device 102 can also instruct the second terminal device 103 to receive the time-frequency resources of the DMRS through the corresponding PDSCH. The first terminal device 102 can receive the DMRS on the time-frequency resources of the DMRS indicated by the network device 101, and perform channel estimation on the downlink equivalent channel according to the DMRS, and demodulate the downlink data received from the network device 101 based on the result of the channel estimation. The second terminal device 103 can receive the DMRS on the time-frequency resources of the DMRS indicated by the network device 101, and perform channel estimation on the downlink equivalent channel according to the DMRS, and demodulate the downlink data received from the network device 101 based on the result of the channel estimation.

[0167] In the Fifth Generation Mobile Communication Technology (5G) protocol of the 3rd Generation Partnership Project (3GPP), a data channel (eg, PDSCH) can distinguish data of different terminal devices through different ports of DMRS.

[0168] Currently, DMRS has the following two configuration types: Type 1 and Type 2, and DMRS has the following two resource mapping types: a single-symbol type and a double-symbol type.

[0169] Figure 1B For an exemplary time-frequency resource mapping diagram of Type 1 and Type 2 DMRS under a single symbol type provided in an embodiment of the present application, please refer to Figure 1B The horizontal axis of the time-frequency resource mapping diagram represents the time domain, and the smallest unit of the time domain is the slot. Each slot includes 14 OFDM symbols. The vertical axis of the time-frequency resource mapping diagram represents the frequency domain, and the smallest unit of the frequency domain is the subcarrier. 12 consecutive subcarriers in the frequency domain and a slot in the time domain can form a resource block (RB). Figure 1B It is a time domain resource mapping diagram of an RB.

[0170] exist Figure 1B In the time domain resource mapping diagram of the RB of the single symbol type Type1 shown, at most 4 orthogonal ports (1000-1003) can be supported simultaneously; in the case of the single symbol type Type2, at most 6 orthogonal ports (1000-1005) can be supported simultaneously.

[0171] Figure 1C For an exemplary time-frequency resource mapping diagram of Type 1 and Type 2 DMRS under the dual symbol type provided in the embodiment of the present application, please refer to Figure 1C In the time domain resource mapping diagram of the RB of the dual symbol type Type1, up to 8 orthogonal ports (1000~1007) can be supported simultaneously; in the case of the dual symbol type Type2, up to 12 orthogonal ports (1000~1011) can be supported simultaneously.

[0172] In the satellite-to-ground communication scenario, a single satellite beam has a large coverage area, and multiple terminal devices can be connected to each satellite beam at the same time. The network device needs to allocate a DMRS port to each terminal device. In the same satellite beam, the number of terminal devices that need to be allocated with the same frequency resources at the same time may exceed 12, and there will be a situation where the number of DMRS ports is insufficient, resulting in a limit on the number of terminal devices that the network device can serve at the same time.

[0173] In some embodiments, a scrambled identity document (ID) parameter n may be used. SCID Generate non-orthogonal DMRS ports. Specifically, the DMRS sequence generation formula in the related art can be referred to, and n is used in the DMRS sequence generation process. SCID ∈{0,1}, providing 24 non-orthogonal DMRS ports in the dual-symbol Type 2 DMRS. However, in satellite-to-ground communication scenarios, direct-path channel scenarios are common, and high channel correlation between different terminal devices is prone to occur. Since the DMRS ports provided by this method are non-orthogonal DMRS ports, high interference between different DMRS ports will occur, and thus high interference between terminal devices corresponding to each DMRS port will occur.

[0174] In the New Radio (NR) system, the following two types of DMRS may be provided: a pre-DMRS and an additional DMRS. In each scheduling time unit (e.g., a time slot), the pre-DMRS is located close to the start position of the schedule, the additional DMRS may be located in the middle or other positions of the schedule, and the additional DMRS and the pre-DMRS occupy the same number of subcarriers and OFDM symbols.

[0175] For ease of understanding, below, combined Figure 1D , taking the time-frequency resource configuration of DMRS of dual symbol type Type2 as an example, the pre-DMRS and the additional DMRS are introduced. It should be understood that the technical solution of the present application is also applicable to the time-frequency resource configuration of DMRS of single symbol type Type1, single symbol type Type2 and dual symbol type Type1, which will not be repeated here.

[0176] Figure 1D This is an exemplary time-frequency resource mapping diagram of the pre-DMRS and additional DMRS of the dual-symbol type Type 2 provided in the embodiment of the present application. Figure 1D, the DMRS configuration type is Type 2, the resource mapping type is a dual symbol type, in this time-frequency resource mapping diagram, the pre-DMRS is placed in symbols 2 and 3, and the additional DMRS is placed in symbols 10 and 11. The number of subcarriers and OFDM symbols occupied by the additional DMRS is the same as the number of subcarriers and OFDM symbols occupied by the pre-DMRS.

[0177] The embodiments of the present application provide a communication method, a communication device, a communication system, a communication device, a storage medium and a program product, wherein a network device sends an indication message to a first terminal device and a second terminal device, wherein the first terminal device and the second terminal device access the network device on the same resource, and the indication message can be used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port. In this method, the network device can instruct the first terminal device and the second terminal device to enable the extended DMRS port through the indication message, thereby realizing the flexible expansion of the number of orthogonal DMRS ports, and also indicates the first time domain resource occupied by the extended DMRS port to the first terminal device and the second terminal device through the indication message, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, thereby enabling the network device to simultaneously provide services to the first terminal device and the second terminal device that access the network device based on the same resource through the extended DMRS port.

[0178] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0179] The interaction process between the network device and the first terminal device and the second terminal device can be as follows: Figure 2 As shown in the embodiment, Figure 2 This is one of the exemplary schematic diagrams of a communication method according to an embodiment of the present application.

[0180] like Figure 2 As shown, the communication method may include the following steps:

[0181] S201. The network device sends indication information to the first terminal device.

[0182] The indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port.

[0183] In some embodiments, the first terminal device receives the indication information.

[0184] In some embodiments, the extended DMRS ports are orthogonal DMRS ports.

[0185] In some embodiments, orthogonal DMRS ports refer to different DMRS ports being orthogonal in time-frequency resources and not interfering with each other.

[0186] In some embodiments, the extended DMRS port may be a DMRS port occupied by an additional DMRS. Optionally, a plurality of extended DMRS ports may be determined using time domain resources configured for the additional DMRS.

[0187] For ease of understanding, below, combined Figure 3 Taking the time-frequency resource configuration of the DMRS of the dual symbol type Type2 to determine the extended DMRS port as an example, the process of determining multiple extended DMRS ports by using the time domain resources configured for the additional DMRS is introduced. It should be understood that the technical solution of the present application is also applicable to the time-frequency resource configuration of the DMRS of the single symbol type Type1, the single symbol type Type2 and the dual symbol type Type1, which will not be described in detail here.

[0188] Figure 3 A schematic diagram of an extended DMRS port provided in an embodiment of the present application. Figure 3 , the DMRS configuration type is Type2, the resource mapping type is a dual symbol type, in this time-frequency resource mapping diagram, the symbols occupied by the time domain resources of the additional DMRS are numbered 10 and 11, and the extended DMRS port can be the DMRS port (1016-1023) occupied by the additional DMRS.

[0189] In some embodiments, a conventional DMRS sequence generation formula may be used to generate a set of sequence numbers of symbols occupied by time domain resources of an extended DMRS port. Exemplarily, the conventional DMRS sequence generation formula may be a DMRS sequence generation formula specified in the 3GPP TS 38.211 document.

[0190] The traditional DMRS sequence generation formula involves multiple configuration parameters (e.g., w f (k′), w t (l′),△, l′, etc.), it should be understood that the configuration parameters of the extended DMRS port can be preset so as to determine the sequence number set of symbols occupied by the timing resources of the extended DMRS port based on the configuration parameters and the DMRS sequence generation formula.

[0191] In some embodiments, when the configuration type is Type 1, the configuration parameters of the DMRS port configured in the resource block (including the original DMRS port and the extended DMRS port) may include: the index p of the DMRS port, the code division multiplexing (CDM) group λ, △, w f (k′), w t (l′), the configuration parameters of each DMRS port may be as shown in Table 1:

[0192] Table 1

[0193]

[0194]

[0195] In Table 1, the indexes of the original DMRS ports are 1000 to 1007, and the indexes of the extended DMRS ports are 1008 to 1015. The CDM groups λ of the original DMRS ports and the extended DMRS ports are different. For example, among the original 8 DMRS ports: 1000, 1001, 1004, and 1005 belong to the same CDM group, and the configuration parameter λ of the CDM group is 0; 1002, 1003, 1006, and 1007 belong to the same CDM group, and the configuration parameter λ of the CDM group is 1. Among the extended 8 DMRS ports: 1008, 1009, 1012, and 1013 belong to the same CDM group, and the configuration parameter λ of the CDM group is 2; 1010, 1011, 1014, and 1015 belong to the same CDM group, and the configuration parameter λ of the CDM group is 3.

[0196] In some embodiments, when the configuration type is Type 2, the configuration parameters of the DMRS port (including the original DMRS port and the extended DMRS port) configured in the resource block may include: the index p of the DMRS port, the CDM group λ, △, w f (k′), w t (l′), the configuration parameters of each DMRS port may be as shown in Table 2:

[0197] Table 2

[0198]

[0199]

[0200] In Table 2, the indexes of the original DMRS ports are 1000 to 1011, and the indexes of the extended DMRS ports are 1012 to 1023. The CDM groups λ of the original DMRS ports and the extended DMRS ports are different. For example, among the original 12 DMRS ports: 1000, 1001, 1006, and 1007 belong to the same CDM group, and the configuration parameter λ of the CDM group is 0; 1002, 1003, 1008, and 1009 belong to the same CDM group, and the configuration parameter λ of the CDM group is 1; 1004, 1005, 1010, and 1011 belong to the same CDM group, and the configuration parameter λ of the CDM group is 2. Among the 12 expanded DMRS ports: 1012, 1013, 1018, and 1019 belong to the same CDM group, and the configuration parameter λ of the CDM group is 3; 1014, 1015, 1020, and 1021 belong to the same CDM group, and the configuration parameter λ of the CDM group is 4; 1016, 1017, 1022, and 1023 belong to the same CDM group, and the configuration parameter λ of the CDM group is 5.

[0201] In this method, by configuring different CDM groups λ for the extended DMRS ports, the orthogonality of the original DMRS ports and the extended DMRS ports in the same frequency domain can be achieved, and the mutual interference between the original DMRS ports and the extended DMRS ports in the same frequency domain can be reduced.

[0202] In some embodiments, the configuration parameters in the conventional DMRS sequence generation formula are The values ​​may be obtained by referring to Tables 7.4.1.1.2-3 and 7.4.1.1.2-4 specified in the 3GPP TS 38.211 document. The value of l′ in the configuration parameter in the traditional DMRS sequence generation formula may be obtained by referring to Table 7.4.1.1.2-5 specified in the 3GPP TS 38.211 document.

[0203] In some embodiments, the extended DMRS port may be a DMRS port corresponding to the first terminal device; or, the extended DMRS port may be a DMRS port corresponding to the second terminal device.

[0204] It should be understood that, when the DMRS port corresponding to the first terminal device is an extended DMRS port, the DMRS port corresponding to the second terminal device may be an original DMRS port. Similarly, when the DMRS port corresponding to the second terminal device is an extended DMRS port, the DMRS port corresponding to the first terminal device may be an original DMRS port.

[0205] Exemplarily, the DMRS port corresponding to the first terminal device may be the original DMRS port 1000, and the DMRS port corresponding to the second terminal device may be the expanded DMRS port 1012. The DMRS port corresponding to the first terminal device may also be the expanded DMRS port 1012, and the DMRS port corresponding to the second terminal device may be the original DMRS port 1000.

[0206] In some embodiments, the resource information of the first time domain resource may include the sequence number of the symbol occupied by the first time domain resource.

[0207] In some embodiments, the symbol occupied by the first time domain resource may be an OFDM symbol in a time-frequency resource diagram. The number of symbols occupied by the first time domain resource may be 1 or 2. Exemplarily, the sequence numbers of the symbols occupied by the first time domain resource may be 10 and 11. The first time domain resource may include: time domain resources corresponding to symbol 10 and symbol 11.

[0208] In some embodiments, the network device may send the indication information to the first terminal device and the second terminal device from the second layer (L2) or a higher layer.

[0209] In some embodiments, the indication information may be carried via a physical downlink control channel (PDCCH).

[0210] In some embodiments, the indication information may be carried by Radio Resource Control (RRC).

[0211] In some embodiments, the indication information is also used to indicate at least one of the following: instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or, instructing the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0212] It can be understood that by instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device, or instructing the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device, interference of time domain resources and signals between the first terminal device and the second terminal device can be avoided, so that the first terminal device and the second terminal device can adjust their own resource mapping in time and can perform channel estimation more accurately.

[0213] In some embodiments, the indication information may include first indication information and second indication information, wherein the first indication information may be used to indicate an enabled extended DMRS port, and the second indication information may be used to indicate a first time domain resource occupied by the extended DMRS port.

[0214] In some embodiments, “the network device sends indication information to the terminal device” can be expressed as “the network device sends first indication information and second indication information to the terminal device”.

[0215] In some embodiments, the network device may also send a first message to the first terminal device, wherein the first message includes a first field and a second field, the value of the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0216] In some embodiments, the first message may be carried via PDCCH.

[0217] In some embodiments, the first message may be carried by RRC signaling. Optionally, the network device may send RRC signaling to the first terminal device, and the RRC signaling includes the first message.

[0218] In some embodiments, the first field may be expressed as “EnableExtendDmrs” or “Enable extended DMRS”.

[0219] Optionally, the value of the first field is, for example, "1", but is not limited thereto, and the value of the first indication information may also be "yes" or "enable", etc.

[0220] In some embodiments, the second field may be expressed as "ExtendDmrsPos" or "Extended DMRS Port".

[0221] In some embodiments, the value of the second field may be used to indicate the sequence number of the symbol occupied by the first time domain resource. The second field may be used to indicate the sequence number of the symbol occupied by the first time domain resource of the extended DMRS port in the time domain.

[0222] In some embodiments, the set of sequence numbers of symbols occupied by the time domain resources of the extended DMRS port may include sequence numbers of symbols occupied by the first time domain resources.

[0223] Optionally, the value of the second field is, for example, {10, 11}, indicating that the sequence number of the symbol occupied by the first time domain resource of the extended DMRS port in the time domain is 10 or 11.

[0224] In some embodiments, terms such as "first field" and "first indication field" can be used interchangeably, and terms such as "second field" and "second indication field" can be used interchangeably.

[0225] In some embodiments, there is a second terminal device that accesses the network device at the same resource as the first terminal device.

[0226] In some embodiments, the same resources refer to: the same time domain resources, the same frequency domain resources, and the same access beams. That is, the time domain resources and frequency resources of the first terminal device and the second terminal device are the same, and the first terminal device and the second terminal device access the network device based on the same beam.

[0227] It is understandable that the network device can perform resource scheduling of the first terminal device according to the time variability of the channel corresponding to the first terminal device to ensure the reliability and efficiency of the communication between the network device and the first terminal device. The network device can determine whether the first terminal device needs to perform time domain interpolation processing of the joint time slot according to the time variability of the channel corresponding to the first terminal device.

[0228] The time domain interpolation processing can help the first terminal device to estimate the channel state more accurately, thereby improving the demodulation performance of the first terminal device.

[0229] The time domain interpolation processing of the joint time slot means that the first terminal device needs to perform the time domain interpolation processing by combining two or more time slots.

[0230] In some embodiments, when it is determined that the first terminal device needs to perform time domain interpolation processing of the joint time slot, the network device may configure the first resource scheduling strategy corresponding to the first terminal device as follows: the set of resource block RB sequence numbers that can be scheduled by the first terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the first terminal device in the current time slot.

[0231] In each time slot, the network device can allocate schedulable RBs to the terminal device, see Figure 1B The duration of an RB in the time domain is usually 1 time slot, and an RB in the frequency domain is usually composed of 12 consecutive subcarriers.

[0232] In some embodiments, the network device may send scheduling information to the first terminal device, where the scheduling information may be used to indicate a set of sequence numbers of RBs that the first terminal device may schedule in a current time slot.

[0233] For example, the RB sequence number set that can be scheduled by the first terminal device in the current time slot is {1, 2, 3, 4, 5}, and the RB sequence number set that can be scheduled by the first terminal device in the next time slot may be {2, 3, 4}.

[0234] When it is determined that the first terminal device needs to perform time domain interpolation processing of the joint time slot, by configuring the first resource scheduling strategy of the first terminal device, it is possible to avoid conflicts between the resources of the first terminal device in the next time slot and the resources of the current time slot, thereby ensuring that the first terminal device can perform time domain interpolation processing normally and efficiently.

[0235] In some embodiments, the network device may also send a second message to the first terminal device, the second message may include a first resource scheduling strategy, and the first resource scheduling strategy may be used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of the joint time slot.

[0236] In some embodiments, the first resource scheduling strategy can be used to indicate that a set of resource block RB numbers that can be scheduled by the first terminal device in the next time slot is a subset of a set of RB numbers that can be scheduled by the first terminal device in the current time slot.

[0237] The network device sends a second message to the first terminal device so that the first terminal device can quickly and accurately perform resource scheduling for time domain interpolation of the joint time slot based on the first resource strategy, thereby avoiding failure of the first terminal device during time domain interpolation processing.

[0238] In some embodiments, the second message may be carried in a control message of the PDCCH.

[0239] In some embodiments, the second message may be carried in signaling sent by the network device at a higher layer. For example, the second message may be carried in RRC signaling.

[0240] S202: The network device sends indication information to the second terminal device.

[0241] The second terminal device and the first terminal device access the network device at the same resource.

[0242] In some embodiments, the second terminal device receives the indication information.

[0243] In some embodiments, the network device may send first indication information and second indication information to the second terminal device, wherein the first indication information is used to indicate enabling the extended DMRS port; and the second indication information is used to indicate the first time domain resource occupied by the extended DMRS port.

[0244] In some embodiments, the indication information is also used to instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0245] It can be understood that by instructing the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device, interference in time domain resources and signals between the first terminal device and the second terminal device can be avoided, so that the second terminal device can adjust its own resource mapping in time and perform channel estimation more accurately.

[0246] In some embodiments, a terminal device may send a first message to a second terminal device, wherein the first message includes a first field and a second field, the value of the first field is used to indicate enabling an extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0247] In some embodiments, the first message may be carried via PDCCH, or the first message may also be carried via RRC signaling.

[0248] It is understandable that the network device can perform resource scheduling of the second terminal device according to the time variability of the channel corresponding to the second terminal device to ensure the reliability and efficiency of the communication between the network device and the second terminal device. The network device can determine whether the second terminal device needs to perform time domain interpolation processing of the joint time slot according to the time variability of the channel corresponding to the second terminal device.

[0249] The time domain interpolation processing can help the second terminal device to estimate the channel state more accurately, thereby improving the demodulation performance of the second terminal device.

[0250] The time domain interpolation processing of the joint time slot means that the second terminal device needs to perform the time domain interpolation processing by combining two or more time slots.

[0251] In some embodiments, when it is determined that the second terminal device needs to perform time domain interpolation processing of the joint time slot, the network device can configure the second resource scheduling strategy corresponding to the second terminal device as follows: the set of resource block RB sequence numbers that can be scheduled by the second terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the second terminal device in the current time slot.

[0252] In some embodiments, the network device may send scheduling information to the second terminal device, where the scheduling information may be used to indicate a set of sequence numbers of RBs that the second terminal device may schedule in a current time slot.

[0253] For example, the RB sequence number set that can be scheduled by the second terminal device in the current time slot is {6, 7, 8, 9, 10}, and the RB sequence number set that can be scheduled by the second terminal device in the next time slot may be {6, 7, 8}.

[0254] When it is determined that the second terminal device needs to perform time domain interpolation processing of the joint time slot, by configuring the second resource scheduling strategy of the second terminal device, it is possible to avoid conflict between the resources of the second terminal device in the next time slot and the resources of the current time slot, thereby ensuring that the second terminal device can perform time domain interpolation processing normally and efficiently.

[0255] In some embodiments, the network device may also send a third message to the second terminal device. The third message may include a second resource scheduling strategy. The second resource scheduling strategy may be used to instruct the second terminal device to schedule resources when performing time domain interpolation processing of the joint time slot.

[0256] In some embodiments, the second resource scheduling strategy can be used to indicate that the set of resource block RB numbers that the second terminal device can schedule in the next time slot is a subset of the set of RB numbers that the second terminal device can schedule in the current time slot.

[0257] The network device sends a third message to the second terminal device so that the second terminal device can quickly and accurately perform resource scheduling for time domain interpolation of the joint time slot based on the second resource strategy, thereby avoiding failure of the second terminal device during time domain interpolation processing.

[0258] In some embodiments, the third message may be carried in a control message of the PDCCH.

[0259] In some embodiments, the third message may be carried in signaling sent by the network device at a higher layer. For example, the second message may be carried in RRC signaling.

[0260] In the communication method provided in the embodiment of the present application, the network device can instruct the first terminal device and the second terminal device through indication information to enable the extended DMRS port, thereby realizing flexible expansion of the number of orthogonal DMRS ports. The network device can also indicate the first time domain resource occupied by the extended DMRS port to the first terminal device and the second terminal device through indication information, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, thereby enabling the network device to provide services for the first terminal device and the second terminal device that access the network device based on the same resources at the same time through the extended DMRS port.

[0261] In some embodiments, the interaction process between the network device and the first terminal device and the second terminal device can be as follows: Figure 4 As shown in the embodiment, Figure 4 This is a second exemplary schematic diagram of a communication method according to an embodiment of the present application. It should be understood that the communication method can be executed alone, or in combination with any embodiment of the present application or a possible implementation method in the embodiment, or in combination with any technical solution in the related technology.

[0262] like Figure 4 As shown, the communication method may specifically include the following steps:

[0263] S401. The network device sends instruction information to the first terminal device.

[0264] In some embodiments, the first terminal device obtains the indication information.

[0265] It should be noted that the specific execution process of step S401 can refer to the specific execution process of step S201, which will not be repeated here.

[0266] S402: The network device sends indication information to the second terminal device.

[0267] In some embodiments, the second terminal device obtains the indication information.

[0268] It should be noted that the specific execution process of step S402 can refer to the specific execution process of step S202, which will not be repeated here.

[0269] S403: When the extended DMRS port is the DMRS port corresponding to the first terminal device, the network device sends first configuration information to the first terminal device.

[0270] The first configuration information may include a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0271] It can be understood that, when the extended DMRS port is the DMRS port corresponding to the first terminal device, the first time domain resource can be the time domain resource occupied by the DMRS port of the first terminal device.

[0272] In some embodiments, the resource information of the first time domain resource may include the sequence number of the symbol occupied by the first time domain resource.

[0273] It can be understood that the port number corresponding to the first terminal device is the port number of the extended DMRS port allocated by the network device to the first terminal device. Exemplarily, the port number corresponding to the first terminal device may be 1012.

[0274] Exemplarily, the symbols occupied by the first time domain resource corresponding to the first terminal device may be numbered 10 and 11. The first time domain resource may include: time domain resources corresponding to symbol 10 and symbol 11.

[0275] S404. The first terminal device receives the DMRS corresponding to the first terminal device on the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0276] In some embodiments, the first terminal device may determine the time domain resources occupied by the DMRS port corresponding to the first terminal device based on the indication information and the first configuration information, and receive the DMRS corresponding to the first terminal device on the time domain resources.

[0277] In some embodiments, when the DMRS port corresponding to the first terminal device is an extended DMRS port, the first terminal device can determine the first time domain resource of the extended DMRS port based on the indication information, and determine the port number corresponding to the first terminal device and the sequence number of the symbol occupied by the first time domain resource based on the first configuration information. Then, the first terminal device can determine the position of the DMRS corresponding to the first terminal device in the time-frequency resources of the RB based on the port number corresponding to the first terminal device and the sequence number of the symbol occupied by the first time domain resource, thereby receiving the DMRS corresponding to the first terminal device at this position.

[0278] In some embodiments, according to the indication information, the first terminal device needs to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device when performing time-frequency resource mapping.

[0279] For example, the time domain resources occupied by the DMRS port corresponding to the second terminal device in the time slot occupy symbols with sequence numbers 2 and 3. When the first terminal device performs time-frequency resource mapping, it is necessary to avoid the time domain resources of the symbols with sequence numbers 2 and 3 in the time slot. In other words, when the first terminal device performs time-frequency resource mapping, the optional time domain resources are other time domain resources except the time domain resources of the symbols with sequence numbers 2 and 3 in the time slot.

[0280] Figure 5 A schematic diagram of time-frequency resource mapping of a first terminal device provided in an embodiment of the present application. Figure 5 The symbols occupied by the time domain resources of the DMRS port corresponding to the first terminal device are numbered 10 and 11, and the symbols occupied by the time domain resources of the DMRS port corresponding to the second terminal device are numbered 2 and 3. When the first terminal device performs time-frequency resource mapping, it needs to avoid the time domain resources occupied by the symbols with numbered 2 and 3 in the time slot.

[0281] S405. The first terminal device receives data corresponding to the first terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the second terminal device.

[0282] In some embodiments, the first configuration information may also include resource information of the third time domain resources occupied by the DMRS port corresponding to the second terminal device.

[0283] In some embodiments, the resource information of the third time domain resource includes the sequence number of the first symbol occupied by the third time domain resource and the number of symbols occupied by the third time domain resource.

[0284] According to the sequence number of the first symbol occupied by the third time domain resource and the number of symbols occupied by the third time domain resource, the sequence number of the symbol occupied by the third time domain resource in the time slot can be determined.

[0285] In some embodiments, the resource information of the third time domain resource may include a first parameter and a second parameter, wherein the first parameter can be used to indicate the sequence number of the first symbol occupied by the third time domain resource, and the second parameter can be used to indicate the number of symbols occupied by the third time domain resource.

[0286] In some embodiments, the first parameter may be a 10 parameter and the second parameter may be a maxLength parameter.

[0287] In some embodiments, the resource information of the third time domain resource can be expressed as "10=2, maxLength=2", where "10" is used to indicate the sequence number of the first symbol of the third time domain resource in the time slot, and 10 is configured as 2, indicating that the sequence number of the first symbol occupied by the third time domain resource in the time slot is 2; "maxLength" is used to indicate the number of symbols occupied by the third time domain resource in the time slot, and maxLength is configured as 2, indicating that the number of symbols occupied by the third time domain resource in the time slot is 2. According to the resource information of the third time domain resource, it can be determined that the sequence numbers of the symbols occupied by the third time domain resource in the time slot are 2 and 3.

[0288] For example, in a time slot, the time domain resources occupied by the DMRS port corresponding to the second terminal device have symbols numbered 2 and 3 in the time slot, then the first terminal device can receive the data corresponding to the first terminal device on the time domain resources corresponding to the symbols numbered 0, 1, 4 to 13 in the time slot.

[0289] S406. The first terminal device demodulates the data corresponding to the first terminal device according to the DMRS corresponding to the first terminal device.

[0290] In some embodiments, the first terminal device may perform channel estimation processing on the channel corresponding to the first terminal device according to the DMRS corresponding to the first terminal device, and demodulate the data corresponding to the first terminal device based on the channel estimation result.

[0291] In some embodiments, the first terminal device may demodulate the data corresponding to the first terminal device in the following two ways.

[0292] Method 1: The first terminal device can demodulate the data corresponding to the first terminal device in the current time slot according to the channel estimation result obtained in the current time slot.

[0293] In mode 1, the first terminal device needs to cache more data, so that this mode has higher requirements on the processing capability of the first terminal device. It can be understood that the DMRS port corresponding to the first terminal device is an extended DMRS port. When the symbol of the time domain resource of the extended DMRS port is relatively late in the current time slot (for example, sequence number 11), if the first terminal device needs to use the DMRS obtained in the current time slot for channel estimation, obtain the channel estimation result, and demodulate the data obtained by the first terminal device in the current time slot based on the channel estimation result, the first terminal device needs to cache the data received from the first symbol of the current time slot (sequence number 0) to the symbol occupied by the time domain resource of the extended DMRS port (sequence number 11), resulting in an excessive amount of data cached by the first terminal device, and the first terminal device needs to process so much data in a short time (symbols 12 and 13 of the current time slot), which makes this mode have higher requirements on the storage capacity and hardware speed of the first terminal device. Furthermore, the first terminal device waits too long during data demodulation (for example, the waiting time is 11 symbols), resulting in a large delay in data demodulation.

[0294] For example, the time-frequency resources occupied by the DMRS corresponding to the first terminal device are the time-frequency resources with symbol numbers 10 and 11 of the current time slot. When performing channel estimation based on the DMRS corresponding to the first terminal device, the first terminal device needs to first cache the data received on the time-frequency resources with symbol numbers 0 to 9 of the current time slot, and after obtaining the DMRS corresponding to the first terminal device on the time-frequency resources with symbols 10 and 11, demodulate the data received in the current time slot based on the channel estimation result in the time domain resources with symbol numbers 12 and 13 of the current time slot.

[0295] When the first terminal device has a high processing capability (for example, the first terminal device has a high storage capacity and a high hardware processing speed), method 1 can be used for data demodulation. When the first terminal device has a low processing capability, method 1 will result in a waste of storage resources of the first terminal device and a large delay in data demodulation of the first terminal device. In this case, the first terminal device can use method 2 shown below for data demodulation.

[0296] Method 2: When the following resource scheduling conditions are met: the RB sequence number set scheduled by the first terminal device in the next time slot is a subset of the RB sequence number set scheduled by the first terminal device in the current time slot, the first terminal device can demodulate the data corresponding to the first terminal device in the next time slot of the current time slot based on the channel estimation result obtained in the current time slot.

[0297] In method 2, the first terminal device caches less data, which can facilitate data demodulation processing by some first terminal devices with lower processing capabilities (for example, smaller storage capacity or lower hardware processing speed), and is beneficial to reducing the processing delay of data demodulation processing by the second terminal device.

[0298] For example, assuming that the current time slot is slot1 and the next time slot is slot2, if the symbol number occupied by the DMRS of the first terminal device in slot1 is 11, the first terminal device can perform channel estimation processing based on the DMRS received in slot1 to obtain a channel estimation result, and perform data demodulation processing on the data received by the first terminal device in slot2 based on the channel estimation result. In this way, the first terminal device can achieve fast demodulation of the data received in slot2, which is conducive to reducing the processing delay, and the amount of data cached by the first terminal device is small. For example, the first terminal device only needs to cache the data received on the time domain resources with symbol numbers 11 to 13.

[0299] S407: When the extended DMRS port is the DMRS port corresponding to the first terminal device, the network device sends third configuration information to the second terminal device.

[0300] The third configuration information may include a port number corresponding to the second terminal device, resource information of a third time domain resource occupied by a DMRS port corresponding to the second terminal device, and resource information of the first time domain resource.

[0301] It is understandable that, when the extended DMRS port is the DMRS port corresponding to the first terminal device, the DMRS port corresponding to the second terminal device may be the original DMRS port. The port number corresponding to the second terminal device is the port number of the original DMRS port corresponding to the first terminal device, for example, the port number corresponding to the second terminal device is 1000.

[0302] In some embodiments, the first time domain resource information may include the sequence number of the symbol occupied by the first time domain resource.

[0303] In some embodiments, the resource information of the third time domain resource may include the sequence number of the first symbol occupied by the third time domain resource and the number of symbols occupied by the third time domain resource. According to the sequence number of the first symbol occupied by the third time domain resource and the number of symbols occupied by the third time domain resource, the sequence number of the symbol occupied by the third time domain resource in the time slot can be determined.

[0304] S408. The second terminal device receives the DMRS corresponding to the second terminal device on the time domain resources occupied by the DMRS port corresponding to the second terminal device.

[0305] Optionally, when the DMRS port corresponding to the first terminal device is an extended DMRS port, the second terminal device can determine the first time domain resource of the extended DMRS port based on the indication information, and determine the port number corresponding to the second terminal device and the resource information of the third time domain resource occupied by the DMRS port corresponding to the second terminal device based on the third configuration information. Then, the second terminal device can determine the position of the DMRS corresponding to the second terminal device in the time domain resources based on the port number corresponding to the second terminal device and the resource information of the third time domain resources, thereby receiving the DMRS corresponding to the second terminal device at this position.

[0306] In some embodiments, according to the indication information, the second terminal device needs to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device when performing time-frequency resource mapping. In the case where the DMRS port corresponding to the first terminal device is an extended DMRS port, the time domain resources occupied by the DMRS port corresponding to the first terminal device are first time domain resources, and the second terminal device can determine the sequence number of the symbol occupied by the first time domain resource in the time slot according to the third configuration information, and determine the position of the first time domain resource in the time domain resource according to the sequence number of the symbol occupied by the first time domain resource in the time slot, and then avoid the position when performing time-frequency resource mapping.

[0307] For example, the time domain resources occupied by the DMRS port corresponding to the first terminal device in the time slot occupy symbols with sequence numbers 10 and 11. When the second terminal device performs time-frequency resource mapping, it is necessary to avoid the time domain resources of the symbols with sequence numbers 10 and 11 in the time slot. In other words, when the second terminal device performs time-frequency resource mapping, the optional time domain resources are other time domain resources except the time domain resources of the symbols with sequence numbers 10 and 11 in the time slot.

[0308] Figure 6 A schematic diagram of time-frequency resource mapping of a second terminal device provided in an embodiment of the present application. Figure 6 The symbols occupied by the time domain resources of the DMRS port corresponding to the second terminal device are numbered 2 and 3, and the symbols occupied by the first time domain resources are numbered 10 and 11. When the second terminal device performs time-frequency resource mapping, it needs to avoid the time domain resources occupied by the symbols with sequence numbers 10 and 11 in the time slot.

[0309] S409. The second terminal device receives data corresponding to the second terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0310] For example, in a time slot, the time domain resources occupied by the DMRS port corresponding to the first terminal device occupy symbols numbered 10 and 11, and the second terminal device can receive data corresponding to the second terminal device on the time domain resources corresponding to symbols numbered 0 to 9, 12, and 13 of the time slot.

[0311] S410. The second terminal device demodulates the data corresponding to the second terminal device according to the DMRS corresponding to the second terminal device.

[0312] In some embodiments, the second terminal device may perform channel estimation processing on the channel corresponding to the second terminal device according to the DMRS corresponding to the second terminal device, and demodulate the data corresponding to the second terminal device based on the channel estimation result.

[0313] It should be noted that the communication method involved in the embodiment of the present application may include at least one of steps S401 to S410. In some embodiments, steps S401 and S403 to S406 may be implemented as independent embodiments; steps S401 and S404 to S406 may be implemented as independent embodiments; steps S402 and S407 to S410 may be implemented as independent embodiments; steps S402 and S408 to S410 may be implemented as independent embodiments; steps S401 to S410 may be implemented as independent embodiments.

[0314] In the communication method provided in the embodiment of the present application, the network device can instruct the first terminal device and the second terminal device to enable the extended DMRS port through indication information, thereby realizing the flexible expansion of the number of orthogonal DMRS ports, and also indicate the first time domain resource occupied by the extended DMRS port to the first terminal device and the second terminal device through indication information, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, so that the network device can provide services to the first terminal device and the second terminal device that access the network device based on the same resources through the extended DMRS port at the same time. In the case where the extended DMRS port is the DMRS port corresponding to the first terminal device, the network device can also send the first configuration information to the first terminal device and the third configuration information to the second terminal device, so that the first terminal device and the second terminal device can quickly and accurately receive the corresponding DMRS signal, and quickly and accurately perform channel estimation and data demodulation based on the DMRS signal.

[0315] In some embodiments, the interaction process between the network device and the first terminal device and the second terminal device can be as follows: Figure 7 As shown in the embodiment, Figure 7This is a third exemplary schematic diagram of a communication method according to an embodiment of the present application. It should be understood that the communication method can be executed alone, or in combination with any embodiment of the present application or a possible implementation method in an embodiment, or in combination with any technical solution in the related technology.

[0316] like Figure 7 As shown, the communication method may specifically include the following steps:

[0317] S701. A network device sends a first message to a first terminal device.

[0318] In some embodiments, the first terminal device may obtain the first message.

[0319] In some embodiments, the first message may include a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes the first time domain resource occupied by the extended DMRS port.

[0320] In some embodiments, the first message is also used to instruct the first terminal device to avoid time domain resources occupied by the DMRS port corresponding to the second terminal device.

[0321] S702. The network device sends a first message to the second terminal device.

[0322] In some embodiments, the second terminal device may obtain the first message.

[0323] In some embodiments, the first message is also used to instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0324] It should be noted that the relevant contents of the "first message", "first field", "second field" and "extended DMRS port" in step S701 and step S702 can refer to the relevant contents of the "first message", "first field", "second field" and "extended DMRS port" in step S201, and will not be repeated here.

[0325] S703: When the extended DMRS port is the DMRS port corresponding to the second terminal device, the network device sends second configuration information to the first terminal device.

[0326] In some embodiments, the second configuration information includes a port number corresponding to the first terminal device, resource information of the second time domain resources occupied by the DMRS port corresponding to the first terminal device, and resource information of the first time domain resources.

[0327] It is understandable that, when the extended DMRS port is the DMRS port corresponding to the second terminal device, the DMRS port corresponding to the first terminal device may be the original DMRS port. The port number corresponding to the first terminal device is the port number of the original DMRS port corresponding to the first terminal device, for example, the port number corresponding to the first terminal device is 1000.

[0328] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0329] In some embodiments, the first terminal device can determine the sequence number of the symbol occupied by the second time domain resource in the time slot according to the sequence number of the first symbol occupied by the second time domain resource and the number of symbols occupied by the second time domain resource.

[0330] In some embodiments, the resource information of the second time domain resource may include a third parameter and a fourth parameter, wherein the third parameter may be used to indicate the sequence number of the first symbol occupied by the second time domain resource, and the fourth parameter may be used to indicate the number of symbols occupied by the second time domain resource.

[0331] In some embodiments, the third parameter may be a 10 parameter and the fourth parameter may be a maxLength parameter.

[0332] In some embodiments, the resource information of the second time domain resource can be expressed as "10=2, maxLength=1", where "10" is used to indicate the sequence number of the first symbol of the second time domain resource in the time slot, and 10 is configured as 2, indicating that the sequence number of the first symbol occupied by the second time domain resource in the time slot is 2; "maxLength" is used to indicate the number of symbols occupied by the second time domain resource in the time slot, and maxLength is configured as 1, indicating that the number of symbols occupied by the second time domain resource in the time slot is 1. According to the resource information of the second time domain resource, it can be determined that the sequence number of the symbol occupied by the second time domain resource in the time slot is 2.

[0333] S704. The first terminal device receives the DMRS corresponding to the first terminal device on the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0334] In some embodiments, the first terminal device may determine the time domain resources occupied by the DMRS port corresponding to the first terminal device based on the first message and the second configuration information, and receive the DMRS corresponding to the first terminal device on the time domain resources.

[0335] In some embodiments, the first terminal device may determine the position of the DMRS corresponding to the first terminal device in the time-frequency resources of the time slot based on the first message and the second configuration information, thereby receiving the DMRS corresponding to the first terminal device at the position.

[0336] In some embodiments, according to the first message, the first terminal device needs to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device when performing time-frequency resource mapping.

[0337] S705. The first terminal device receives data corresponding to the first terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the second terminal device.

[0338] For example, in a time slot, the time domain resources occupied by the DMRS port corresponding to the second terminal device occupy symbols numbered 10 and 11, then the first terminal device can receive data corresponding to the first terminal device on the time domain resources corresponding to symbols numbered 0 to 9, 12, and 13 in the time slot.

[0339] S706. The first terminal device demodulates the data corresponding to the first terminal device according to the DMRS corresponding to the first terminal device.

[0340] It should be noted that the specific execution process of step S706 can refer to the specific execution process of step S406, which will not be repeated here.

[0341] S707: When the extended DMRS port is the DMRS port corresponding to the second terminal device, the network device sends fourth configuration information to the second terminal device.

[0342] In some embodiments, the fourth configuration information may include a port number corresponding to the second terminal device and resource information of the first time domain resources.

[0343] It can be understood that, when the extended DMRS port is the DMRS port corresponding to the second terminal device, the first time domain resource can be the time domain resource occupied by the DMRS port of the second terminal device.

[0344] It can be understood that the port number corresponding to the second terminal device is the port number of the extended DMRS port allocated by the network device to the second terminal device. Exemplarily, the port number corresponding to the second terminal device may be 1012.

[0345] Exemplarily, the symbols occupied by the first time domain resources corresponding to the second terminal device may be numbered 10 and 11. The first time domain resources may include: time domain resources corresponding to symbol 10 and symbol 11.

[0346] S708. The second terminal device receives the DMRS corresponding to the second terminal device on the time domain resources occupied by the DMRS port corresponding to the second terminal device.

[0347] In some embodiments, the second terminal device may determine the time domain resources occupied by the DMRS port corresponding to the second terminal device based on the first message and the fourth configuration information, and receive the DMRS corresponding to the second terminal device on the time domain resources.

[0348] In some embodiments, the first terminal device can determine the position of the DMRS corresponding to the second terminal device in the time-frequency resources of the time slot based on the first message and the fourth configuration information, so as to receive the DMRS corresponding to the second terminal device at the position.

[0349] In some embodiments, according to the first message, the second terminal device needs to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device when performing time-frequency resource mapping.

[0350] S709. The second terminal device receives data corresponding to the second terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0351] For example, in a time slot, the time domain resources occupied by the DMRS port corresponding to the first terminal device occupy symbols numbered 2 and 3, and the second terminal device can receive data corresponding to the second terminal device on the time domain resources corresponding to symbols numbered 0, 1, 4 to 13 in the time slot.

[0352] S710. The second terminal device demodulates the data corresponding to the second terminal device according to the DMRS corresponding to the second terminal device.

[0353] In some embodiments, the second terminal device may perform channel estimation processing on the channel corresponding to the second terminal device according to the DMRS corresponding to the second terminal device, and demodulate the data corresponding to the second terminal device based on the channel estimation result.

[0354] In some embodiments, the second terminal device may demodulate the data corresponding to the second terminal device in the following two ways.

[0355] Method 1: The second terminal device can demodulate the data corresponding to the second terminal device in the current time slot according to the channel estimation result obtained in the current time slot.

[0356] In mode 1, the second terminal device needs to cache more data, and the second terminal device needs to demodulate all the data in the current time slot in a short time, so that this mode requires a higher processing capability of the second terminal device. In addition, in mode 1, the second terminal device waits too long for data demodulation, resulting in a large delay in data demodulation.

[0357] When the second terminal device has a high processing capability (for example, the second terminal device has a high storage capacity and a high hardware processing speed), method 1 can be used for data demodulation. When the second terminal device has a low processing capability, method 1 will result in a waste of storage resources of the second terminal device and a long delay. In this case, the second terminal device can use method 2 as shown below for data demodulation.

[0358] Method 2: When the following resource scheduling conditions are met: the RB sequence number set scheduled by the second terminal device in the next time slot is a subset of the RB sequence number set scheduled by the second terminal device in the current time slot, the second terminal device can demodulate the data corresponding to the second terminal device in the next time slot of the current time slot based on the channel estimation result obtained in the current time slot.

[0359] In method 2, the second-end device caches less data, which can facilitate data demodulation processing by some second terminal devices with lower processing capabilities (for example, smaller storage capacity or lower hardware processing speed), and is beneficial to reducing the processing delay of data demodulation processing by the second terminal device.

[0360] S711. The network device sends a second message to the first terminal device.

[0361] In some embodiments, the second message may include a first resource scheduling strategy, and the first resource scheduling strategy may be used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot.

[0362] In some embodiments, the first resource scheduling strategy may be: a set of resource block RB numbers that can be scheduled by the first terminal device in the next time slot is a subset of a set of RB numbers that can be scheduled by the first terminal device in the current time slot.

[0363] It should be noted that the relevant content of the "first resource scheduling strategy" in this step can refer to the relevant content of the "first resource scheduling strategy" in step S201, and will not be repeated here.

[0364] S712. When performing time domain interpolation processing of the joint time slot, the first terminal device determines the RB sequence number set that can be scheduled by the first terminal device in the next time slot according to the first resource scheduling strategy in the second message and the RB sequence number set scheduled by the first terminal device in the current time slot.

[0365] In some embodiments, when the first terminal device performs time domain interpolation processing of the joint time slot, the set of resource block RB numbers that the first terminal device can schedule in the next time slot is a subset of the set of RB numbers that the first terminal device can schedule in the current time slot.

[0366] The first terminal device can determine, based on the first resource scheduling strategy, that when the first terminal device performs time domain interpolation processing of the joint time slot, resource scheduling must meet the following conditions: the set of RB sequence numbers schedulable in the next time slot is a subset of the set of RB sequence numbers schedulable in the current time slot.

[0367] For example, when the first terminal device needs to perform time domain interpolation processing on the time-frequency resources of time slot 1 and time slot 2, the current time slot is time slot 1 and the next time slot is time slot 2. If the RB sequence number set scheduled for time slot 1 is {1, 2, 3, 4, 5}, the RB sequence number set scheduled for time slot 2 can only select RB sequence numbers from the RB sequence number set scheduled for time slot 1, and no other RB sequence numbers except the RB sequence number set scheduled for time slot 1 can be selected.

[0368] S713. The network device sends a third message to the second terminal device.

[0369] In some embodiments, the third message may include a second resource scheduling strategy, and the second resource scheduling strategy may be used to instruct the second terminal device to schedule resources when performing time domain interpolation processing of the joint time slot.

[0370] It should be noted that the relevant content of the "second resource scheduling strategy" in this step can refer to the relevant content of the "second resource scheduling strategy" in step S202, and will not be repeated here.

[0371] S714. When performing time domain interpolation processing of the joint time slot, the second terminal device determines the RB sequence number set that can be scheduled by the second terminal device in the next time slot according to the second resource scheduling strategy in the third message and the RB sequence number set scheduled by the second terminal device in the current time slot.

[0372] In some embodiments, when the second terminal device performs time domain interpolation processing of the joint time slot, the set of resource block RB numbers schedulable by the second terminal device in the next time slot is a subset of the set of RB numbers schedulable by the second terminal device in the current time slot.

[0373] The second terminal device can determine, based on the second resource scheduling strategy, that when the second terminal device performs time domain interpolation processing of the joint time slot, resource scheduling must meet the following conditions: the set of RB sequence numbers schedulable in the next time slot is a subset of the set of RB sequence numbers schedulable in the current time slot.

[0374] For example, when the second terminal device needs to perform time domain interpolation processing on the time-frequency resources of time slot 3 and time slot 4, the current time slot is time slot 3 and the next time slot is time slot 4. If the RB sequence number set scheduled for time slot 3 is {1, 2, 3}, then the RB sequence number set scheduled for time slot 4 can only select RB sequence numbers from the RB sequence number set scheduled for time slot 3, and no other RB sequence numbers except the RB sequence number set scheduled for time slot 3 can be selected.

[0375] It should be noted that the communication method involved in the embodiments of the present application may include at least one of steps S701 to S714. In some embodiments, step S701 and step S702 can be implemented as independent embodiments; step S701 and step S703 can be implemented as independent embodiments; step S701, step S703 to step S706 can be implemented as independent embodiments; step S701, step S704 to step S706 can be implemented as independent embodiments; step S701, step S711, step S712 can be implemented as independent embodiments; step S701, step S703, step S711, step S712 can be implemented as independent embodiments; step S701, step S703 to step S706, step S711 and step S712 can be implemented as independent embodiments; step S701, step S704 to step S706, step S711 and step S712 can be implemented as independent embodiments. S711 and step S712 can be implemented as independent embodiments; step S702 and step S707 can be implemented as independent embodiments; step S702, step S707 to step S710 can be implemented as independent embodiments; step S702, step S708 to step S710 can be implemented as independent embodiments; step S702, step S713, and step S714 can be implemented as independent embodiments; step S702, step S707 to step S710, step S713, and step S714 can be implemented as independent embodiments; step S702, step S708 to step S710, step S713, and step S714 can be implemented as independent embodiments; step S701 to step S714 can be implemented as independent embodiments.

[0376] In the communication method provided in the embodiment of the present application, the network device can instruct the first terminal device and the second terminal device to enable the extended DMRS port through indication information, thereby realizing the flexible expansion of the number of orthogonal DMRS ports, and also indicate the first time domain resource occupied by the extended DMRS port to the first terminal device and the second terminal device through indication information, so that the first terminal device and the second terminal device can correctly obtain the DMRS without introducing a new reference signal, so that the network device can provide services to the first terminal device and the second terminal device that access the network device based on the same resources through the extended DMRS port at the same time. In the case where the extended DMRS port is the DMRS port corresponding to the second terminal device, the network device can also send the second configuration information to the first terminal device and send the fourth configuration information to the second terminal device, so that the first terminal device and the second terminal device can quickly and accurately receive the corresponding DMRS signal, and quickly and accurately perform channel estimation and data demodulation based on the DMRS signal. The network device can also instruct the first terminal device on resource scheduling when performing time domain interpolation processing of the joint time slot through the first resource scheduling strategy in the second message, and instruct the second terminal device on resource scheduling when performing time domain interpolation processing of the joint time slot through the second resource scheduling strategy in the third message, so that the first terminal device and the second terminal device can perform time domain interpolation processing of the joint time slot normally and quickly.

[0377] Figure 8 This is one of the structural diagrams of the communication device provided in the embodiment of the present application. The communication device can be implemented by software and / or hardware. Figure 8 As shown, the communication device 800 may include:

[0378] The transceiver module 801 is used to send indication information to the first terminal device and the second terminal device;

[0379] Among them, the first terminal device and the second terminal device access the network device in the same resource; the indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port.

[0380] In some embodiments, the indication information is further used to indicate at least one of the following:

[0381] instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or,

[0382] Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0383] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; or,

[0384] The extended DMRS port is the DMRS port corresponding to the second terminal device.

[0385] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; the transceiver module 801 is further used for:

[0386] Send first configuration information to the first terminal device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0387] In some embodiments, the extended DMRS port is a DMRS port corresponding to the second terminal device; the transceiver module 801 is further used for:

[0388] Send second configuration information to the first terminal device, the second configuration information including the port number corresponding to the first terminal device, resource information of the second time domain resources occupied by the DMRS port corresponding to the first terminal device, and resource information of the first time domain resources.

[0389] In some embodiments, the resource information of the first time domain resource includes the serial number of the symbol occupied by the first time domain resource.

[0390] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0391] In some embodiments, the indication information includes first indication information and second indication information, wherein:

[0392] The first indication information is used to indicate enabling the extended DMRS port;

[0393] The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

[0394] In some embodiments, the transceiver module 801 is specifically used for:

[0395] Sending a first message to the first terminal device and the second terminal device;

[0396] The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0397] In some embodiments, the communication device further includes a processing module 802, and the processing module 802 is configured to:

[0398] In the case where it is determined that the first terminal device needs to perform time domain interpolation processing of the joint time slot, the first resource scheduling strategy corresponding to the first terminal device is configured as follows: the resource block RB sequence number set that can be scheduled by the first terminal device in the next time slot is a subset of the RB sequence number set that can be scheduled by the first terminal device in the current time slot; and / or,

[0399] When it is determined that the second terminal device needs to perform time domain interpolation processing of the joint time slot, the second resource scheduling strategy corresponding to the second terminal device is configured as follows: the set of RB sequence numbers that can be scheduled by the second terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the second terminal device in the current time slot.

[0400] In some embodiments, the transceiver module 801 is further used for:

[0401] sending a second message to the first terminal device, where the second message includes the first resource scheduling strategy, where the first resource scheduling strategy is used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot; and / or,

[0402] A third message is sent to the second terminal device, where the third message includes the second resource scheduling strategy, and the second resource scheduling strategy is used to indicate resource scheduling of the second terminal device when performing time domain interpolation processing of the joint time slot.

[0403] The communication device 800 provided in the embodiment of the present application is used to execute the method steps executed by the network device in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0404] Fig. 9 This is a second structural diagram of a communication device provided in an embodiment of the present application. The communication device may be implemented by software and / or hardware. Fig. 9 As shown, the communication device 900 may include:

[0405] The transceiver module 901 is used to receive the instruction information sent by the network device;

[0406] The indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port, and there is a second terminal device accessing the network device in the same resource as the first terminal device.

[0407] In some embodiments, the indication information is further used to indicate at least one of the following:

[0408] instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or,

[0409] Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

[0410] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; or,

[0411] The extended DMRS port is the DMRS port corresponding to the second terminal device.

[0412] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; the transceiver module 901 is further used for:

[0413] Receive first configuration information sent by the network device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

[0414] In some embodiments, the extended DMRS port is a DMRS port corresponding to the first terminal device; the transceiver module 901 is further used for:

[0415] Receive second configuration information sent by the network device, wherein the second configuration information includes a port number corresponding to the first terminal device, resource information of a second time domain resource occupied by a DMRS port corresponding to the first terminal device, and resource information of the first time domain resource.

[0416] In some embodiments, the resource information of the first time domain resource includes the serial number of the symbol occupied by the first time domain resource.

[0417] In some embodiments, the resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

[0418] In some embodiments, the indication information includes first indication information and second indication information, wherein:

[0419] The first indication information is used to indicate enabling the extended DMRS port;

[0420] The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

[0421] In some embodiments, the transceiver module 901 is specifically used for:

[0422] Receiving a first message sent by the network device;

[0423] The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

[0424] In some embodiments, the communication device further includes a processing module 902, wherein:

[0425] The transceiver module 901 is further configured to receive a DMRS corresponding to the first terminal device on a time domain resource occupied by a DMRS port corresponding to the first terminal device;

[0426] The transceiver module 901 is further configured to receive data corresponding to the first terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the second terminal device;

[0427] The processing module 902 is used to demodulate the data corresponding to the first terminal device according to the DMRS corresponding to the first terminal device.

[0428] In some embodiments, when the first terminal device performs time domain interpolation processing of the joint time slot, the set of resource block RB sequence numbers that the first terminal device can schedule in the next time slot is a subset of the set of RB sequence numbers that the first terminal device can schedule in the current time slot.

[0429] In some embodiments, the transceiver module 901 is further used to receive a second message sent by the network device, where the second message includes a first resource scheduling strategy, where the first resource scheduling strategy is used to instruct the first terminal device to perform resource scheduling when performing time domain interpolation processing of the joint time slot;

[0430] The processing module 902 is used to determine the RB sequence number set that can be scheduled by the first terminal device in the next time slot according to the first resource scheduling strategy in the second message and the RB sequence number set scheduled by the first terminal device in the current time slot when performing time domain interpolation processing of the joint time slot.

[0431] In some embodiments, the first resource scheduling strategy is: the set of RB sequence numbers that can be scheduled by the first terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the first terminal device in the current time slot.

[0432] The communication device 900 provided in the embodiment of the present application is used to execute the method steps executed by the second terminal device in the above method embodiment. Its implementation principles and beneficial effects are similar and will not be repeated here.

[0433] Fig.10The present invention provides an exemplary structural diagram of a communication device provided in an embodiment of the present application. The communication device is, for example, a network device, a first terminal device, or a second terminal device. Fig.10 As shown, the communication device 1000 may include: a memory 1001, a processor 1002 and a transceiver 1003. The transceiver 1003 may include: a transmitter and / or a receiver. The transmitter may also be referred to as a transmitter, a transmitter, a transmission port or a transmission interface and the like, and the receiver may also be referred to as a receiver, a reception port or a reception interface and the like. Exemplarily, each part of the memory 1001, the processor 1002 and the transceiver 1003 is interconnected via a bus 1004.

[0434] The memory 1001 is used to store program instructions.

[0435] The processor 1002 is used to execute the program instructions stored in the memory to enable the electronic device to execute the above method.

[0436] All or part of the steps of each of the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a readable memory. When the program is executed, the steps of each of the above method embodiments are executed; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state drive, magnetic tape, floppy disk, optical disk and any combination thereof.

[0437] An embodiment of the present application provides a communication device, including: a memory and a processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the method in the above method embodiment.

[0438] Optionally, an embodiment of the present application may also provide a storage medium. The storage medium stores instructions, and when the instructions are executed on the communication device, the communication device executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited to this, and it may also be a temporary storage medium.

[0439] An embodiment of the present application also provides a computer program product, including a program and / or instructions. When the program and / or instructions are executed by a communication device, the communication device can implement the method shown in the above method embodiment.

[0440] An embodiment of the present application also provides a computer program product, including a computer program, which, when executed by a processor, can implement the method shown in the above method embodiment.

[0441] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0442] Those skilled in the art may make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

[0443] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

Claims

1. A communication method, characterized in that: Applied to a network device, the method comprises: Sending instruction information to the first terminal device and the second terminal device; Among them, the first terminal device and the second terminal device access the network device in the same resource; the indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port.

2. The method according to claim 1, characterized in that The indication information is also used to indicate at least one of the following: instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or, Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

3. The method according to claim 1 or 2, characterized in that: The extended DMRS port is the DMRS port corresponding to the first terminal device; or, The extended DMRS port is the DMRS port corresponding to the second terminal device.

4. The method according to any one of claims 1 to 3, characterized in that: The extended DMRS port is a DMRS port corresponding to the first terminal device; the method further includes: Send first configuration information to the first terminal device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

5. The method according to any one of claims 1 to 3, characterized in that: The extended DMRS port is a DMRS port corresponding to the second terminal device; the method further includes: Send second configuration information to the first terminal device, the second configuration information including the port number corresponding to the first terminal device, resource information of the second time domain resources occupied by the DMRS port corresponding to the first terminal device, and resource information of the first time domain resources.

6. The method according to claim 4 or 5, characterized in that: The resource information of the first time domain resource includes the sequence numbers of symbols occupied by the first time domain resource.

7. The method according to claim 5 or 6, characterized in that: The resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

8. The method according to any one of claims 1 to 7, characterized in that: The indication information includes first indication information and second indication information, wherein: The first indication information is used to indicate enabling the extended DMRS port; The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

9. The method according to any one of claims 1 to 7, characterized in that: Sending instruction information to the first terminal device and the second terminal device includes: Sending a first message to the first terminal device and the second terminal device; The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

10. The method according to any one of claims 1 to 7, characterized in that: The method further comprises at least one of the following: In the case where it is determined that the first terminal device needs to perform time domain interpolation processing of the joint time slot, the first resource scheduling strategy corresponding to the first terminal device is configured as follows: the resource block RB sequence number set that can be scheduled by the first terminal device in the next time slot is a subset of the RB sequence number set that can be scheduled by the first terminal device in the current time slot; When it is determined that the second terminal device needs to perform time domain interpolation processing of the joint time slot, the second resource scheduling strategy corresponding to the second terminal device is configured as follows: the set of RB sequence numbers that can be scheduled by the second terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the second terminal device in the current time slot.

11. The method according to claim 10, characterized in that The method further comprises at least one of the following: Sending a second message to the first terminal device, where the second message includes the first resource scheduling strategy, where the first resource scheduling strategy is used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot; A third message is sent to the second terminal device, where the third message includes the second resource scheduling strategy, and the second resource scheduling strategy is used to indicate resource scheduling of the second terminal device when performing time domain interpolation processing of the joint time slot.

12. A communication method, characterized in that: Applied to a first terminal device, the method includes: Receiving instruction information sent by the network device; The indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port, and there is a second terminal device accessing the network device in the same resource as the first terminal device.

13. The method according to claim 12, characterized in that The indication information is also used to indicate at least one of the following: instructing the first terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the second terminal device; or, Instruct the second terminal device to avoid the time domain resources occupied by the DMRS port corresponding to the first terminal device.

14. The method according to claim 12 or 13, characterized in that The extended DMRS port is the DMRS port corresponding to the first terminal device; or, The extended DMRS port is the DMRS port corresponding to the second terminal device.

15. The method according to any one of claims 12 to 14, characterized in that: The extended DMRS port is a DMRS port corresponding to the first terminal device; the method further includes: Receive first configuration information sent by the network device, where the first configuration information includes a port number corresponding to the first terminal device and resource information of the first time domain resources.

16. The method according to any one of claims 12 to 14, characterized in that: The extended DMRS port is a DMRS port corresponding to the second terminal device; the method further includes: Receive second configuration information sent by the network device, wherein the second configuration information includes a port number corresponding to the first terminal device, resource information of a second time domain resource occupied by a DMRS port corresponding to the first terminal device, and resource information of the first time domain resource.

17. The method according to claim 15 or 16, characterized in that The resource information of the first time domain resource includes the sequence numbers of symbols occupied by the first time domain resource.

18. The method according to claim 16 or 17, characterized in that The resource information of the second time domain resource includes: the sequence number of the first symbol occupied by the second time domain resource, and the number of symbols occupied by the second time domain resource.

19. The method according to any one of claims 12 to 18, characterized in that: The indication information includes first indication information and second indication information, wherein: The first indication information is used to indicate enabling the extended DMRS port; The second indication information is used to indicate the first time domain resources occupied by the extended DMRS port.

20. The method according to any one of claims 12 to 18, characterized in that: Receive instruction information sent by network equipment, including: Receiving a first message sent by the network device; The first message includes a first field and a second field, the value in the first field is used to indicate enabling the extended DMRS port, and the second field includes a first time domain resource occupied by the extended DMRS port.

21. The method according to any one of claims 12 to 20, characterized in that: The method further comprises: Receiving the DMRS corresponding to the first terminal device on the time domain resources occupied by the DMRS port corresponding to the first terminal device; Receiving data corresponding to the first terminal device on other resources except the time domain resources occupied by the DMRS port corresponding to the second terminal device; The data corresponding to the first terminal device is demodulated and processed according to the DMRS corresponding to the first terminal device.

22. The method according to any one of claims 12 to 21, characterized in that: When the first terminal device performs time domain interpolation processing of the joint time slot, the set of resource block RB sequence numbers that can be scheduled by the first terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the first terminal device in the current time slot.

23. The method according to any one of claims 12 to 22, characterized in that: The method further comprises: receiving a second message sent by the network device, wherein the second message includes a first resource scheduling strategy, and the first resource scheduling strategy is used to instruct the first terminal device to schedule resources when performing time domain interpolation processing of a joint time slot; When performing time domain interpolation processing of the joint time slot, the RB sequence number set that the first terminal device can schedule in the next time slot is determined based on the first resource scheduling strategy in the second message and the RB sequence number set scheduled by the first terminal device in the current time slot.

24. The method according to claim 23, characterized in that The first resource scheduling strategy is: the set of RB sequence numbers that can be scheduled by the first terminal device in the next time slot is a subset of the set of RB sequence numbers that can be scheduled by the first terminal device in the current time slot.

25. A communication device, characterized in that: Applied to network equipment, including: A transceiver module, used to send indication information to the first terminal device and the second terminal device; Among them, the first terminal device and the second terminal device access the network device in the same resource; the indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port.

26. A communication device, characterized in that: Applied to the first terminal device, including: A transceiver module, used for receiving instruction information sent by a network device; The indication information is used to indicate the enabled extended DMRS port and the first time domain resource occupied by the extended DMRS port, and there is a second terminal device accessing the network device in the same resource as the first terminal device.

27. A communication system, characterized in that: Including terminal equipment and network equipment; The network device is used to execute the communication method according to any one of claims 1 to 11 The terminal device is used to execute the communication method described in any one of claims 12 to 24.

28. A communication device, characterized in that: include: Memory and processor, The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the communication method according to any one of claims 1 to 11.

29. A communication device, characterized in that: include: Memory and processor, The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the communication method according to any one of claims 12 to 24.

30. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication method according to any one of claims 1 to 11 is implemented.

31. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication method according to any one of claims 12 to 24 is implemented.

32. A computer program product, characterized in that The method comprises a program and / or an instruction, and when the program and / or the instruction is executed by a communication device, the communication device executes the communication method according to any one of claims 1 to 11.

33. A computer program product, characterized in that The method comprises a program and / or an instruction, and when the program and / or the instruction is executed by a communication device, the communication device executes the communication method according to any one of claims 12 to 24.

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