Transmission delay compensation method, device, equipment and storage medium

Abstract

The embodiments of the present application provide a method, device, equipment and storage medium for compensating for transmission delay, and relate to the field of communication technology. The method comprises: a network device sends signal configuration information to a terminal device, and the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal comprises: an uplink reference signal and / or a downlink reference signal. The embodiments of the present application configure a reference signal for transmission delay compensation for a terminal device through a network device, and then the terminal device and the network device can determine the signal transmission delay based on the reception and transmission of the reference signal, or determine the transmission delay to be compensated during transmission delay compensation, so as to further realize the compensation for the transmission delay of the signal transmitted between the terminal device and the network device, and provide a method for compensating for transmission delay, which ensures the accurate synchronization between the terminal device and the network device.

Description

[0001] This application is a divisional application of the PCT international patent application PCT / CN2020 / 112158 with an application date of August 28, 2020, which entered the Chinese national phase with Chinese patent application number 202080104823.2 and the invention name being “Transmission delay compensation method, device, equipment and storage medium”. Technical Field

[0002] The embodiments of the present application relate to the field of communication technology, and in particular to a method, device, equipment and storage medium for compensating for transmission delay. Background Art

[0003] 5G (5th-Generation) IIoT (Industrial Interest of Things) requires support for the transmission of industrial automation (Factory automation), transmission automation (Transport Industry), smart power (Electrical Power Distribution) and other services in the 5G system.

[0004] Based on its transmission requirements for latency and reliability, IIoT introduces the concept of time-sensitive network TSN (Time Sensitive Network) or TSC (Time Sensitive Communication). In TSN, the 5G system will serve as a logical bridge in TSN to provide services for TSN and TSN services. Based on this, the 5G system needs to provide lower latency guarantees and higher synchronization accuracy, so that when TSN services are transmitted in the 5G system, each logical switching node can accurately operate and connect with the TSN, and meet the synchronization accuracy requirements of the TSN services.

[0005] Therefore, how to achieve higher synchronization accuracy for 5G systems to ensure that 5G systems meet the synchronization accuracy requirements of TSN services requires further discussion and research. Summary of the invention

[0006] The embodiment of the present application provides a method, device, equipment and storage medium for compensating transmission delay. The technical solution is as follows:

[0007] On the one hand, an embodiment of the present application provides a method for compensating transmission delay, which is applied to a terminal device, and the method includes:

[0008] Receiving signal configuration information from a network device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device;

[0009] The reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0010] On the other hand, an embodiment of the present application provides a method for compensating transmission delay, which is applied to a network device, and the method includes:

[0011] Sending signal configuration information to a terminal device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device;

[0012] The reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0013] On the other hand, an embodiment of the present application provides a transmission delay compensation device, which is arranged in a terminal device, and the device includes:

[0014] A configuration information receiving module, used to receive signal configuration information from a network device, wherein the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device;

[0015] The reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0016] On the other hand, an embodiment of the present application provides a transmission delay compensation device, which is arranged in a network device, and the device includes:

[0017] A configuration information sending module, used to send signal configuration information to a terminal device, wherein the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device;

[0018] The reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0019] In another aspect, an embodiment of the present application provides a terminal device, the terminal device comprising: a processor, and a transceiver connected to the processor; wherein:

[0020] The transceiver is used to receive signal configuration information from a network device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device;

[0021] The reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0022] In another aspect, an embodiment of the present application provides a network device, the network device comprising: a processor, and a transceiver connected to the processor; wherein:

[0023] The transceiver is used to send signal configuration information to the terminal device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device;

[0024] The reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0025] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a terminal device to implement the method for compensating the transmission delay on the terminal device side as described above.

[0026] On the other hand, an embodiment of the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a network device to implement the method for compensating the transmission delay on the network device side as described above.

[0027] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a terminal device, it is used to implement the method for compensating the transmission delay on the terminal device side as described above.

[0028] On the other hand, an embodiment of the present application provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a network device, it is used to implement the compensation method for transmission delay on the network device side as described above.

[0029] On the other hand, an embodiment of the present application provides a computer program product, which, when executed on a terminal device, enables the computer to execute the method for compensating the transmission delay on the terminal device side as described above.

[0030] On the other hand, an embodiment of the present application provides a computer program product, which, when executed on a network device, enables a computer to execute the method for compensating for the transmission delay on the network device side as described above.

[0031] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0032] The reference signal for transmission delay compensation is configured for the terminal device through the network device, and then the terminal device and the network device can determine the signal transmission delay based on the reception and transmission of the reference signal, or determine the transmission delay to be compensated during the transmission delay compensation, so as to further compensate for the transmission delay of the signal transmitted between the terminal device and the network device, and provide a method for compensating for the transmission delay, thereby ensuring the precise synchronization between the terminal device and the network device. In addition, the technical solution provided in the embodiment of the present application can be applied to the 5G system, because the transmission delay between the terminal device and the network device in the 5G system is compensated, ensuring that the 5G system has higher synchronization accuracy, so that the 5G system meets the synchronization accuracy requirements required by the TSN service. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 is a schematic diagram of a system architecture provided by an embodiment of the present application;

[0035] Figure 2 is a schematic diagram of a TSN communication system provided by an embodiment of the present application;

[0036] Figure 3 is a flowchart of a positioning method based on RX-TX provided by an embodiment of the present application;

[0037] Figure 4 is a flow chart of a method for compensating transmission delay provided by an embodiment of the present application;

[0038] Figure 5 is a flow chart of a process for determining a transmission delay provided by an embodiment of the present application;

[0039] Figure 6 is a flow chart of a transmission delay compensation process provided by an embodiment of the present application;

[0040] Figure 7 is a flow chart of a method for compensating transmission delay provided by another embodiment of the present application;

[0041] Figure 8 is a flow chart of a method for compensating transmission delay provided by another embodiment of the present application;

[0042] Fig. 9 is a block diagram of a transmission delay compensation device provided by an embodiment of the present application;

[0043] Fig.10 is a block diagram of a transmission delay compensation device provided by another embodiment of the present application;

[0044] Fig.11 is a block diagram of a transmission delay compensation device provided by another embodiment of the present application;

[0045] Fig.12 is a block diagram of a transmission delay compensation device provided by another embodiment of the present application;

[0046] Fig.13 is a schematic diagram of the structure of a terminal device provided by an embodiment of the present application;

[0047] Fig.14 It is a structural diagram of a network device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0049] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0050] Please refer to Figure 1 , which shows a schematic diagram of a system architecture provided by an embodiment of the present application. The system architecture may include: a terminal device 10 and a network device 20.

[0051] The number of terminal devices 10 is usually multiple, and one or more terminal devices 10 may be distributed in a cell managed by each network device 20. The terminal device 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, as well as various forms of user equipment (UE), mobile stations (MS), etc. For the convenience of description, in the embodiments of the present application, the above-mentioned devices are collectively referred to as terminal devices.

[0052] The network device 20 is a device deployed in an access network to provide wireless communication functions for the terminal device 10. The network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of devices with network device functions may be different. For example, in a 5G NR (New Radio) system, it is called gNodeB or gNB. With the evolution of communication technology, the name "network device" may change. For the convenience of description, in the embodiments of the present application, the above-mentioned devices that provide wireless communication functions for the terminal device 10 are collectively referred to as network devices.

[0053] The "5G NR system" in the embodiment of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art may understand its meaning. The technical solution described in the embodiment of the present application may be applicable to a 5G NR system or to a subsequent evolution system of the 5G NR system.

[0054] From the above introduction, we can know that 5G IIoT needs to support the transmission of industrial automation, transmission automation, smart power and other services in the 5G system. Based on its transmission requirements for latency and reliability, IIoT introduces the concept of TSN or TSC. In one example, the 5G system can be integrated into TSN as an Ethernet Bridge of TSN, and the integrated system can be called a TSN communication system. Please refer to Figure 2 , which shows a schematic diagram of a TSN communication system provided by an embodiment of the present application. The TSN communication system may include TSN and 5G systems.

[0055] The 5G system includes terminal devices and various functional entities. In one example, the 5G system includes the following functional entities:

[0056] RAN (Radio Access Network): Similar to the base station in the traditional network, it is deployed close to the terminal device to provide network access for authorized users in a specific area and can use transmission tunnels of different qualities to transmit user data according to the user level and business requirements;

[0057] UPF (User Plane Function): performs user data packet forwarding according to the routing rules of SMF (Session Management Function);

[0058] AUSF (Authentication Server Function): performs security authentication of UE;

[0059] AMF (Access and Mobility Management Function): UE access management and mobility management;

[0060] SMF: UE session management;

[0061] NSSF (Network Slice Selection Function): selects network slices for UE;

[0062] NEF (Network Exposure Function): Opens network functions to third parties via northbound APIs.

[0063] NRF (NF Repository Function): Provides storage and selection functions for network function entity information for other network elements;

[0064] UDM (Unified Data Management): User contract context management;

[0065] PCF (Policy Control Function): user policy management;

[0066] AF (Application Function): User application management.

[0067] TSN includes ES (End Station) and CNC (Centralized Network Controller). CNC is used to uniformly manage the services of the entire TSN communication system.

[0068] like Figure 2 As shown in the figure, the terminal equipment in the 5G system is connected to one or more ES in the TSN DN (Data Network) outside the 5G system through DS-TT (Device Side TSN Translator); the user plane entity is connected to one or more ES in the TSN DN through NW-TT (Network TSN Translator). Both DS-TT and NW-TT can provide ports for data transmission.

[0069] It can be seen that in TSN, the 5G system will serve as a logical bridge in TSN to provide services for TSN and TSN services. Therefore, the 5G system needs to provide lower latency guarantees and higher synchronization accuracy, so that when TSN services are transmitted in the 5G system, each logical switching node can accurately operate and connect the TSN and meet the synchronization accuracy requirements of the TSN services.

[0070] In R17 (Release 17), based on the requirements of TSN service transmission, TSN services need to meet the synchronization accuracy requirement of less than 900ns (nanosecond) when transmitted in the 5G system. At present, in the research on terminal device positioning in R16 (Release 16), the positioning method based on Rx (Receive)-Tx (Transport) Time Difference (transmit and transmit time difference) (hereinafter referred to as "RX-TX-based positioning method") has high accuracy, and the obtained RTT (Round-Trip Time) can reach an accuracy of several nanoseconds.

[0071] In one example, the RX-TX-based positioning method uses LMF (Location Management Function) as the positioning center, and controls multiple base stations through LMF to coordinate RTT measurement, wherein the multiple base stations include the base station corresponding to the service cell of the terminal device, and at least one base station adjacent to the base station corresponding to the service cell. Please refer to Figure 3 , which shows a flowchart of a positioning method based on RX-TX provided by an embodiment of the present application. The positioning method based on RX-TX may include the following steps:

[0072] Step 300: The terminal device and the LMF perform positioning capability interaction. Exemplarily, the LMF requests the terminal device to obtain the positioning capability, and the terminal device reports the positioning capability to the LMF after receiving the request from the LMF.

[0073] Step 310, LMF sends a downlink reference signal (re) configuration to multiple base stations. The downlink reference signal (re) configuration includes the starting position (or time) of the downlink reference signal measurement, the sending window, the downlink reference signal, etc. Optionally, the downlink reference signal includes at least one of the following: PRS (Positioning Reference Signal), DMRS (Demodulation Reference Signal), TRS (Tracking Reference Signal), CSI-RS (Channel State Information Reference Signal), SRS (Sounding Reference Signal).

[0074] Step 320: LMF sends uplink reference signal (re) configuration to multiple base stations. Similar to step 310, the uplink reference signal (re) configuration includes the starting position (or time) of the uplink reference signal, the measurement window, the uplink reference signal, etc. Optionally, the uplink reference signal includes at least one of the following: SRS, DMRS, etc.

[0075] Step 330: LMF sends a downlink positioning measurement request to the terminal device. The downlink positioning measurement request is used to request the terminal device to measure the downlink reference signal and report the measurement result. Optionally, the downlink positioning measurement request includes positioning assistance information, which includes Cell ID (cell ID (Identifier)), reference signal configuration, etc. The reference signal configuration includes uplink reference signal configuration and / or downlink reference signal configuration.

[0076] Step 340: LMF sends an uplink positioning measurement request to multiple base stations. The uplink positioning measurement request is used to request multiple base stations to measure uplink reference signals and report measurement results. Optionally, the uplink positioning measurement request includes positioning assistance information, which includes Cell ID, reference signal configuration, measurement and reporting instructions, etc.

[0077] Step 350: The terminal device performs downlink reference signal measurement. After receiving the downlink positioning measurement request sent by the LMF, the terminal device receives the downlink reference signal on the specified time-frequency resource according to the downlink reference signal configuration.

[0078] Step 360: Multiple base stations perform uplink reference signal measurement. After receiving the uplink positioning measurement request sent by the LMF, multiple base stations receive uplink reference signals on designated time-frequency resources according to the uplink reference signal configuration.

[0079] Step 370: The terminal device sends a downlink positioning measurement report to the LMF. Optionally, the downlink positioning measurement report includes a transmit / receive time difference and a cell identifier corresponding to the transmit / receive time difference. The transmit / receive time difference included in the downlink positioning measurement report is the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal corresponding to the same base station or the same cell.

[0080] Step 380: Multiple base stations send uplink positioning measurement reports to the LMF. Optionally, the uplink positioning measurement report includes a transmit / receive time difference and a cell identifier corresponding to the transmit / receive time difference. The transmit / receive time difference included in the uplink positioning measurement report is a time difference between a reception time of an uplink reference signal of a terminal device and a transmission time of a downlink reference signal.

[0081] Step 390, LMF performs RTT calculation. Since the locations of multiple base stations are known, the RTT can be calculated by measuring the time difference between sending and receiving, thereby calculating the distance from the terminal device to each base station or cell. Multiple base stations can determine the unique location of the terminal device in space, thereby achieving accurate positioning of the terminal device.

[0082] In order to ensure that the 5G system achieves higher synchronization accuracy, the embodiment of the present application proposes to apply the idea of ​​the positioning method based on RX-TX to the precise synchronization between the terminal device and the network device. To achieve precise synchronization, it is necessary to compensate for the transmission delay between the terminal device and the network device. However, there is no method for obtaining and compensating for transmission delay in the related art. In addition, it can be seen from the above example that in the positioning method based on RX-TX, LMF configures uplink and downlink reference signals between the terminal device and multiple base stations involved in positioning, and calculates RTT to achieve precise positioning of the terminal device. However, it is precisely because RTT is calculated by LMF that the terminal device and multiple base stations do not perceive RTT, and thus cannot perform other operations based on RTT, such as transmission delay compensation based on RTT.

[0083] Based on this, an embodiment of the present application proposes a method for compensating for transmission delay, in which a reference signal for transmission delay compensation is configured for a terminal device through a network device, so that the terminal device and the network device can determine the signal transmission delay based on the reception and transmission of the reference signal, or determine the transmission delay to be compensated during transmission delay compensation, so as to further compensate for the transmission delay of the signal transmitted between the terminal device and the network device, thereby providing a method for compensating for transmission delay and ensuring accurate synchronization between the terminal device and the network device.

[0084] The technical solution of the present application is introduced and explained below with reference to several examples.

[0085] Please refer to Figure 4, which shows a flow chart of a method for compensating transmission delay provided by an embodiment of the present application. The method can be applied to Figure 1 In the system architecture shown in FIG. 1 , the method may include the following steps:

[0086] Step 410, the network device sends signal configuration information to the terminal device, the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0087] From the above introduction, it can be seen that in order to achieve accurate synchronization between the terminal device and the network device, it is necessary to compensate for the transmission delay of the signal transmitted between the terminal device and the network device. Therefore, in the process of transmission delay compensation, it is necessary to first determine the signal transmission delay between the terminal device and the network device or the transmission delay to be compensated during transmission delay compensation. Based on this, the network device can send signal configuration information to the terminal device to configure the reference signal, and then determine the signal transmission delay or the transmission delay to be compensated during transmission delay compensation according to the sending and receiving time of the reference signal.

[0088] Optionally, the network device is a network device corresponding to a service cell of the terminal device. For example, the network device includes an access network device (such as a gNB, etc.) deployed in the access network to provide wireless communication functions for the terminal device. Optionally, the terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting the transmission of TSN services, and supporting the transmission of gPTP (general Precise Time Protocol) messages. Therefore, in an embodiment of the present application, the network device corresponding to the service cell of a terminal device that has high-precision transmission requirements / supports the transmission of TSN services / supports the transmission of gPTP messages can send signal configuration information to the terminal device to configure a reference signal.

[0089] Among them, the reference signal includes an uplink reference signal and / or a downlink reference signal. On the one hand, after configuring the reference signal for the terminal device, the network device can send a downlink reference signal to the terminal device; on the other hand, after receiving the signal configuration information of the network device, the terminal device can send an uplink reference signal to the network device. The embodiment of the present application does not limit the specific signal types of the uplink reference signal and the downlink reference signal. Optionally, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS, PRS, TRS, CSI-RS; Optionally, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB (SS (Synchronization Signals, synchronization signal) / PBCH (Physical Broadcast Channel, Physical Broadcast Channel) Blocks, synchronization signal blocks), CRS (Cell Reference Signal, cell reference signal), DMRS, TRS. Optionally, the uplink reference signal and the downlink reference signal are of the same signal type, for example, both the uplink reference signal and the downlink reference signal are DMRS; or, the uplink reference signal and the downlink reference signal are of different signal types, for example, the uplink reference signal is SRS and the downlink reference signal is PRS.

[0090] In order to improve the accuracy of determining the transmission delay, in an embodiment of the present application, the network device and the terminal device may perform multiple reference signal transmission and reception processes to measure the transmission and reception times of multiple groups of reference signals, etc. Based on this, in an embodiment of the present application, the network device may configure multiple reference signals for the terminal device, for example, multiple uplink reference signals and multiple downlink reference signals for the terminal device. Optionally, the signal configuration information also includes: a binding relationship (or "corresponding relationship") between an uplink reference signal and a downlink reference signal, that is, when the network device configures the reference signal for the terminal device, it further configures the binding relationship between the uplink reference signal and the downlink reference signal, so that on the one hand, when the terminal device receives the downlink reference signal, it can be clear that the RX-TX Time Difference is determined according to the reception time of the downlink reference signal and the transmission time of which uplink reference signal; on the other hand, when the network device receives the uplink reference signal, it can also be clear that the RX-TX Time Difference is determined according to the reception time of the uplink reference signal and the transmission time of which downlink reference signal.

[0091] The embodiments of the present application do not limit the form of expression of the above-mentioned binding relationship, and the binding relationship may be explicitly indicated or implicitly indicated. Optionally, the above-mentioned signal configuration information includes the binding relationship between the index of the uplink reference signal and the index of the downlink reference signal, such as the binding relationship between the SRS index and the PRS index; or, the above-mentioned signal configuration information includes the time interval (or "distance") between the uplink reference signal and the downlink reference signal with a binding relationship, such as the interval between the sending time of the uplink reference signal and the sending time of the downlink reference signal, the bitmap of the reference signal, and the mapping index (mappingindex) of the uplink reference signal and the downlink reference signal at a specific position.

[0092] In one example, after receiving the signal configuration information, the terminal device transmits and receives reference signals with the network device. Exemplarily, the network device sends a downlink reference signal to the terminal device and receives an uplink reference signal from the terminal device; the terminal device sends an uplink reference signal to the network device and receives a downlink reference signal from the network device. The embodiment of the present application does not limit the time when the network device and the terminal device transmit and receive reference signals. Optionally, the network device transmits and receives reference signals with the terminal device after sending the signal configuration information or after a period of time after sending the signal configuration information; or, the network device transmits and receives reference signals with the terminal device when receiving the uplink reference signal from the terminal device or after receiving the uplink reference signal from the terminal device.

[0093] In summary, the technical solution provided by the embodiment of the present application configures a reference signal for transmission delay compensation for the terminal device through the network device, and then the terminal device and the network device can determine the signal transmission delay based on the reception and transmission of the reference signal, or determine the transmission delay to be compensated during the transmission delay compensation, so as to further compensate for the transmission delay of the signal transmitted between the terminal device and the network device, and provide a method for compensating for the transmission delay, thereby ensuring the precise synchronization between the terminal device and the network device. In addition, the technical solution provided by the embodiment of the present application can be applied to the 5G system. Since the transmission delay between the terminal device and the network device in the 5G system is compensated, it ensures that the 5G system has higher synchronization accuracy, so that the 5G system meets the synchronization accuracy requirements required by the TSN service.

[0094] In addition, the embodiment of the present application provides a variety of signal types of reference signals, enriches the signal types of reference signals, and enables network devices to configure reference signals autonomously and flexibly. In addition, in the embodiment of the present application, the reference signal includes an uplink reference signal and / or a downlink reference signal, and the network device also configures the binding relationship between the uplink reference signal and the downlink reference signal for the terminal device, so that the terminal device and the network device can respectively clarify the basis for determining the transceiver time difference. For the terminal device, it can clarify the transceiver time difference is the time difference between the sending moment of the uplink reference signal and the receiving moment of the downlink reference signal; for the network device, it can clarify the transceiver time difference is the time difference between the sending moment of the downlink reference signal and the receiving moment of the uplink reference signal, ensuring the accuracy of determining the transceiver time difference, thereby improving the accuracy of determining the transmission delay.

[0095] In the embodiment of the present application, the signal transmission delay between the terminal device and the network device or the transmission delay compensated during the transmission delay compensation can be determined by the terminal device (the terminal device is a computing entity) or by the network device (the network device is a computing entity). The following describes these two situations respectively.

[0096] In one example, if Figure 5 As shown, the above method also includes the following steps:

[0097] Step 422: The terminal device sends first delay reference information to the network device.

[0098] When the network device acts as a computing entity, in order to ensure the accuracy of the signal transmission delay calculated by the network device or the transmission delay that needs to be compensated, the terminal device can send first delay reference information to the network device. The first delay reference information can be used to provide a reference for the network device to calculate the signal transmission delay or the transmission delay that needs to be compensated.

[0099] The first delay reference information is obtained by the terminal device measuring the reference signal, such as measuring the sending time of the uplink reference signal, the receiving time of the downlink reference signal, etc. Based on this, in one example, the first delay reference information includes at least one of the following: the receiving time of the downlink reference signal, the sending time of the uplink reference signal, the time difference between the receiving time of the downlink reference signal and the sending time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal. Optionally, when measuring the receiving and sending time difference, the terminal device measures the receiving and sending time difference between the uplink and downlink reference signals with a binding relationship, such as measuring the receiving time of a downlink reference signal and the time difference between the sending time of the uplink reference signal with a binding relationship with the downlink reference signal. Optionally, similar to the receiving and sending time difference, when measuring the mapping index, the terminal device measures the mapping index between the uplink and downlink reference signals with a binding relationship.

[0100] The embodiment of the present application does not limit the time when the terminal device sends the first delay reference information. Optionally, the above step 422 includes: the terminal device sends the first delay reference information to the network device at a first moment; wherein the first moment includes any one of the following: the receiving moment of the downlink reference signal, the moment after the receiving moment of the downlink reference signal, the sending moment of the uplink reference signal, the moment after the sending moment of the uplink reference signal, the second moment, and the moment after the second moment. Among them, the second moment is the moment when the time difference between the receiving moment of the downlink reference signal and the sending moment of the uplink reference signal is determined. Optionally, the second moment is the moment when the terminal device determines the receiving and sending time difference between a group of uplink and downlink reference signals with a binding relationship. Optionally, the terminal device periodically sends the first delay reference information to the network device. When the first delay reference information is periodically sent, the content of the first delay reference information sent by the terminal device each time may be the same or different. For example, the first delay reference information sent by the terminal device for the first time includes the receiving and sending time difference between the first uplink reference signal and the first downlink reference signal, and the first delay reference information sent by the terminal device for the second time includes the receiving and sending time difference between the second uplink reference signal and the second downlink reference signal. Among them, the value of the transmit / receive time difference between the first uplink reference signal and the first downlink reference signal, and the value of the transmit / receive time difference between the second uplink reference signal and the second downlink reference signal may be the same or different. Optionally, when there are multiple groups of uplink and downlink reference signals, the first uplink reference signal and the first downlink reference signal and the second uplink reference signal and the second downlink reference signal may be the same or different. For another example, the first delay reference information sent by the terminal device for the first time includes the transmit / receive time difference between a group of uplink and downlink reference signals, and the first delay reference information sent by the terminal device for the second time includes the transmit / receive time difference between the two groups of uplink and downlink reference signals. Optionally, when the consecutive transmit / receive time differences are the same, the terminal device may not report the transmit / receive time difference between the uplink and downlink reference signals, or may only report the transmit / receive time difference between a group of uplink and downlink reference signals.

[0101] Step 424: The network device determines the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during transmission delay compensation, based on the first delay reference information.

[0102] After receiving the first delay reference information, the network device can determine the signal transmission delay or the transmission delay to be compensated according to the first delay reference information. Since the network device itself also measures the reference signal, the network device can optionally combine the first delay reference information and the measurement result of the network device on the reference signal to determine the signal transmission delay or the transmission delay to be compensated, thereby improving the accuracy of the delay determination result.

[0103] In an embodiment of the present application, since the network device or the terminal device may have performed a portion of delay compensation when transmitting uplink and downlink reference signals, the delay calculated by the network device based on the first delay reference information may not be the actual transmission delay of the transmitted signal, but the transmission delay that actually needs to be compensated during transmission delay compensation. Alternatively, the network device calculates a function of the transmission delay based on the first delay reference information, and the function of the transmission delay is the transmission delay that actually needs to be compensated during transmission delay compensation. Therefore, in an embodiment of the present application, the network device determines the signal transmission delay between the terminal device and the network device based on the first delay reference information in one case, and optionally, the signal transmission delay includes at least one of the following: RTT, RX-TX Time Difference; in another case, the transmission delay compensated during transmission delay compensation is determined.

[0104] In another example, Figure 5 As shown, the above method also includes the following steps:

[0105] Step 421: The network device sends second delay reference information to the terminal device.

[0106] When the terminal device acts as a computing entity, in order to ensure the accuracy of the signal transmission delay calculated by the terminal device or the transmission delay that needs to be compensated, the network device can send second delay reference information to the terminal device, and the second delay reference information can be used to provide a reference for the terminal device to calculate the signal transmission delay or the transmission delay that needs to be compensated.

[0107] The second delay reference information is obtained by measuring the reference signal by the network device, such as measuring the reception time of the uplink reference signal, the transmission time of the downlink reference signal, etc. Based on this, in one example, the second delay reference information includes at least one of the following: the transmission time of the downlink reference signal, the reception time of the uplink reference signal, the time difference between the transmission time of the downlink reference signal and the reception time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal. Optionally, when measuring the transmission and reception time difference, the network device measures the transmission and reception time difference between the uplink and downlink reference signals with a binding relationship, such as measuring the reception time of a certain uplink reference signal, and the time difference between the transmission time of the downlink reference signal with a binding relationship with the uplink reference signal. Optionally, similar to the transmission and reception time difference, when measuring the mapping index, the terminal device measures the mapping index between the uplink and downlink reference signals with a binding relationship.

[0108] The embodiment of the present application does not limit the time when the network device sends the second delay reference information. Optionally, the above step 421 includes: the network device sends the second delay reference information to the terminal device at a third moment; wherein the third moment includes any one of the following: the sending moment of the downlink reference signal, the moment after the sending moment of the downlink reference signal, the receiving moment of the uplink reference signal, the moment after the receiving moment of the uplink reference signal, the fourth moment, and the moment after the fourth moment. Among them, the fourth moment is the moment when the time difference between the sending moment of the downlink reference signal and the receiving moment of the uplink reference signal is determined. Optionally, the fourth moment is the moment when the network device determines the time difference between the transmission and reception of a group of uplink and downlink reference signals with a binding relationship. Optionally, the network device periodically sends the second delay reference information to the terminal device. When the second delay reference information is periodically sent, the content of the second delay reference information sent by the network device each time can be the same or different. For example, the second delay reference information sent by the network device for the first time includes the time difference between the transmission and reception of the first uplink reference signal and the first downlink reference signal, and the second delay reference information sent by the network device for the second time includes the time difference between the transmission and reception of the second uplink reference signal and the second downlink reference signal. Among them, the value of the transmit / receive time difference between the first uplink reference signal and the first downlink reference signal, and the value of the transmit / receive time difference between the second uplink reference signal and the second downlink reference signal may be the same or different. Optionally, when there are multiple groups of uplink and downlink reference signals, the first uplink reference signal and the first downlink reference signal, and the second uplink reference signal and the second downlink reference signal may be the same or different. For example, the second delay reference information sent by the network device for the first time includes the transmit / receive time difference between a group of uplink and downlink reference signals, and the second delay reference information sent by the network device for the second time includes the transmit / receive time difference between the two groups of uplink and downlink reference signals. Optionally, when the consecutive transmit / receive time differences are the same, the network device may not report the transmit / receive time difference between the uplink and downlink reference signals, or may only report the transmit / receive time difference between a group of uplink and downlink reference signals.

[0109] Step 423: The terminal device determines the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during transmission delay compensation, based on the second delay reference information.

[0110] After receiving the second delay reference information, the terminal device can determine the signal transmission delay or the transmission delay to be compensated according to the second delay reference information. Since the terminal device itself also measures the reference signal, the terminal device can optionally combine the second delay reference information and the measurement result of the reference signal by the terminal device to determine the signal transmission delay or the transmission delay to be compensated, thereby improving the accuracy of the delay determination result.

[0111] In an embodiment of the present application, since the network device or the terminal device may perform a portion of delay compensation when transmitting uplink and downlink reference signals, the delay calculated by the terminal device based on the first delay reference information may not be the actual transmission delay of the transmitted signal, but the transmission delay that actually needs to be compensated for during transmission delay compensation. Alternatively, the terminal device calculates a function of the transmission delay based on the first delay reference information, and the function of the transmission delay is the transmission delay that actually needs to be compensated for during transmission delay compensation. Therefore, in an embodiment of the present application, the terminal device determines the signal transmission delay between the terminal device and the network device based on the second delay reference information in one case, and optionally, the signal transmission delay includes at least one of the following: RTT, transmission delay (half of the RTT); in another case, what is determined is the transmission delay compensated during transmission delay compensation.

[0112] In one example, the signal configuration information further includes: computing entity indication information. The computing entity indication information is used to indicate the entity that determines the signal transmission delay or the transmission delay to be compensated. The embodiment of the present application does not limit the method for determining the computing entity indication information. The computing entity indication information can explicitly indicate the computing entity or implicitly indicate the computing entity. Optionally, the computing entity indication information includes a terminal device or a network device. For example, if the computing entity indication information includes a terminal device, the terminal device is used as the computing entity; or, the computing entity indication information includes: the terminal device sends a first delay reference information to the network device, or the network device sends a second delay reference information to the terminal device. For example, the computing entity indication information includes the terminal device sending the first delay reference information to the network device, and the network device is used as the computing entity; or, the computing entity indication information includes: the network device receives the first delay reference information, or the terminal device receives the second delay reference information. For example, if the computing entity indication information includes the terminal device receiving the second delay reference information, the terminal device is used as the computing entity. In another example, the computing entity is indicated by a dedicated signaling sent by the network device to the terminal device, such as RRC (Radio Resource Control) signaling. The manner in which the dedicated signaling indicates the computing entity can refer to the manner in which the computing entity indication information indicates the computing entity, which is not described in detail here. In another example, the computing entity is predefined by a communication protocol. The manner in which the communication protocol defines the computing entity can refer to the manner in which the computing entity indication information indicates the computing entity, which is not described in detail here.

[0113] In summary, the technical solution provided in the embodiment of the present application measures the reference signal through the network device and the terminal device, and then determines the signal transmission delay or the transmission delay to be compensated according to the measurement result, thereby providing a basis for performing transmission delay compensation. In the embodiment of the present application, the signal transmission delay or the transmission delay to be compensated can be determined by the terminal device or by the network device, which improves the flexibility of delay determination and helps to flexibly select the delay determination subject according to actual needs. For example, when the available computing resources of the terminal device are small, in order not to increase the processing overhead of the terminal device, the transmission delay can be determined by the network device.

[0114] After determining the signal transmission delay or the transmission delay that needs to be compensated, the transmission delay compensation can be performed by the terminal device (the terminal device is the compensation subject) or by the network device (the network device is the compensation subject).

[0115] The following describes these two situations respectively.

[0116] In one example, if Figure 6 As shown, the above method also includes step 432: the terminal device performs transmission delay compensation according to the compensation subject information.

[0117] When the terminal device is determined as the compensation subject according to the compensation subject information, the terminal device performs transmission delay compensation. For example, the terminal device subtracts the signal transmission delay or the transmission delay to be compensated from the expected transmission time of the signal to obtain the actual transmission time of the signal, and determines the time, synchronizes, or transmits the signal according to the actual transmission time to achieve the purpose of transmission delay compensation and synchronization.

[0118] The compensation subject information is used to indicate the subject that performs transmission delay compensation. The embodiment of the present application does not limit the carrying mode of the compensation subject information. Optionally, the compensation subject information includes at least one of the following: subject indication information from the network device, subject configuration information from the network device, and compensation subject information predefined by the communication protocol. When the compensation subject information includes the subject indication information, the subject indication information can be carried in a dedicated signaling, that is, the network device can indicate the compensation subject to the terminal device through a dedicated signaling (such as RRC signaling). When the compensation subject information includes the subject configuration information, the network device can configure the compensation subject for the terminal device. When the compensation subject information includes the compensation subject information predefined by the communication protocol, the compensation subject is predefined by the communication protocol. The embodiment of the present application does not limit the indication mode of the compensation subject information. The compensation subject information can explicitly indicate the compensation subject or implicitly indicate the compensation subject. Optionally, the compensation subject information includes: whether the terminal device performs transmission delay compensation, or whether the network device performs transmission delay compensation. For example, in the case where the compensation subject information includes that the terminal device performs transmission delay compensation, the terminal device is used as the compensation subject, and the network device sends the second delay reference information to the terminal device. For another example, when the compensation subject information includes that the network device does not perform transmission delay compensation, the terminal device serves as the compensation subject, and the network device sends second delay reference information to the terminal device.

[0119] After determining that the compensation subject is a terminal device, the embodiment of the present application does not limit the timing when the terminal device performs transmission delay compensation. Optionally, when the computing entity is a terminal device, the terminal device performs transmission delay compensation when determining the signal transmission delay or the signal transmission delay to be compensated; or, when the computing entity is a terminal device, the terminal device performs transmission delay compensation when obtaining time information from a network device; or, when the computing entity is a network device, the terminal device performs transmission delay compensation when receiving the signal transmission delay determined by the network device or the transmission delay to be compensated; or, when the computing entity is a network device, the terminal device performs transmission delay compensation when receiving the signal transmission delay determined by the network device or the transmission delay to be compensated and the time information; or, the terminal device performs transmission delay compensation when the execution conditions are met. Among them, the execution conditions include at least one of the following: obtaining the signal transmission delay or the transmission delay to be compensated, receiving the indication information that the network device does not perform the transmission delay compensation, receiving the indication information that the terminal device performs the transmission delay compensation, the distance between the terminal device and the network device is greater than or equal to the first threshold value, the ISD (the distance from the center point to the edge of the service cell) of the terminal device is greater than or equal to the second threshold value, and the signal transmission delay or the signal transmission delay to be compensated is greater than or equal to the third threshold value. Optionally, the signal transmission delay actually calculated by the terminal device, the time difference between the obtained NW synchronization time (such as SFN (System Frame Number, system frame number)), or the time difference between the obtained NW information, is less than or equal to the fourth threshold value.

[0120] In another example, Figure 6 As shown, the above method also includes step 431: the network device performs transmission delay compensation according to the compensation subject information.

[0121] When the network device is determined as the compensation subject according to the compensation subject information, the network device performs transmission delay compensation. For example, the network device subtracts the signal transmission delay or the transmission delay to be compensated from the expected transmission time of the signal to obtain the actual transmission time of the signal, and indicates the corresponding time information according to the actual transmission time, such as the actual time corresponding to the reference SFN, so as to achieve the purpose of transmission delay compensation and synchronization.

[0122] The compensation subject information is used to indicate the subject that performs transmission delay compensation. The embodiment of the present application does not limit the carrying mode of the compensation subject information. Optionally, the compensation subject information includes at least one of the following: subject indication information of the network device, subject configuration information of the network device, and compensation subject information predefined by the communication protocol. When the compensation subject information includes subject indication information, the subject indication information can be carried in a dedicated signaling, that is, the network device can indicate the compensation subject to the terminal device through dedicated signaling (such as RRC signaling). When the compensation subject information includes subject configuration information, the network device can configure the compensation subject for the terminal device. When the compensation subject information includes compensation subject information predefined by the communication protocol, the compensation subject is predefined by the communication protocol. The embodiment of the present application does not limit the indication mode of the compensation subject information. The compensation subject information can explicitly indicate the compensation subject or implicitly indicate the compensation subject. Optionally, the compensation subject information includes: whether the terminal device performs transmission delay compensation, or whether the network device performs transmission delay compensation. For example, in the case where the compensation subject information includes that the network device performs transmission delay compensation, the network device acts as the compensation subject, and the terminal device sends the first delay reference information to the network device. For another example, when the compensation subject information includes that the terminal device does not perform transmission delay compensation, the network device serves as the compensation subject, and the terminal device sends the first delay reference information to the network device.

[0123] After determining that the compensation subject is a network device, the embodiment of the present application does not limit the timing when the network device performs transmission delay compensation. Optionally, when the computing entity is a network device, the network device performs transmission delay compensation when determining the signal transmission delay or the signal transmission delay to be compensated; or, when the computing entity is a network device, the network device performs transmission delay compensation when obtaining time information from a terminal device; or, when the computing entity is a terminal device, the network device performs transmission delay compensation when receiving the signal transmission delay determined by the terminal device or the transmission delay to be compensated; or, when the computing entity is a terminal device, the network device performs transmission delay compensation when receiving the signal transmission delay determined by the terminal device or the transmission delay to be compensated and the time information; or, the network device performs transmission delay compensation when the execution conditions are met. The execution conditions include at least one of the following: the signal transmission delay or the transmission delay to be compensated is obtained, the distance between the terminal device and the network device is greater than or equal to the first threshold value, the ISD (the distance from the center point to the edge of the service cell) of the terminal device is greater than or equal to the second threshold value, and the signal transmission delay or the signal transmission delay to be compensated is greater than or equal to the third threshold value. Optionally, the signal transmission delay actually calculated by the network device, the time difference between the obtained NW synchronization time (such as SFN), or the time difference between the obtained NW information, is less than or equal to the fourth threshold value.

[0124] In one example, the computing entity and the compensation subject are the same, such as the computing entity and the compensation subject are both terminal devices, or both are network devices. By having the same device calculate the signal transmission delay or the transmission delay to be compensated, and perform transmission delay compensation, excessive information exchanges between the terminal device and the network device can be avoided. Alternatively, the computing entity and the compensation subject are different, such as the computing entity is a terminal device, and the compensation subject is a network device. By having one device calculate the signal transmission delay or the transmission delay to be compensated, and another device perform transmission delay compensation, it is helpful to disperse and balance the processing overhead.

[0125] To sum up, the technical solution provided in the embodiment of the present application determines the compensation subject for transmission delay compensation through compensation subject information. The compensation subject can be indicated by the network device to the terminal device through dedicated signaling, or configured by the network device for the terminal device through configuration information, or predefined by the communication protocol, thereby enriching the method of determining the compensation subject and improving the flexibility of selecting the compensation subject.

[0126] The technical solution of the present application is introduced and explained with two examples below.

[0127] Please refer to Figure 7 , which shows a flow chart of a method for compensating transmission delay provided by an embodiment of the present application. The method can be applied to Figure 1 In the system architecture shown in FIG. 1 , the method may include the following steps:

[0128] Step 710: The network device sends signal configuration information to the terminal device. The signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0129] Step 720: The network device sends a downlink reference signal to the terminal device. Optionally, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB, CRS, DMRS, TRS.

[0130] Step 730: The terminal device sends an uplink reference signal to the network device. Optionally, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS, PRS, TRS, CSI-RS.

[0131] It should be noted that the embodiment of the present application does not limit the execution order of step 720 and step 730. Optionally, step 720 and step 730 are executed simultaneously, or step 720 is executed after step 730, or step 720 is executed before step 730. Another point that should be noted is that the embodiment of the present application does not limit the number of executions of step 720 and step 730. Optionally, both step 720 and step 730 are executed periodically.

[0132] Step 740: The terminal device and the network device respectively perform reference signal measurement. Optionally, the reference signal measurement includes measuring the time difference between the transmission and reception of the uplink and downlink reference signals. For example, for the terminal device, the reference signal measurement includes measuring the time difference between the transmission time of the uplink reference signal and the reception time of the downlink reference signal.

[0133] Step 750: The terminal device sends first delay reference information to the network device. Optionally, the first delay reference information includes at least one of the following: a reception time of a downlink reference signal, a transmission time of an uplink reference signal, a time difference between a reception time of a downlink reference signal and a transmission time of an uplink reference signal, an index of a downlink reference signal, an index of an uplink reference signal, and a mapping index between a downlink reference signal and an uplink reference signal.

[0134] Step 760: The network device determines the signal transmission delay or the transmission delay to be compensated during transmission delay compensation. Optionally, the network device determines the signal transmission delay or the transmission delay to be compensated during transmission delay compensation in combination with the first delay reference information sent by the terminal device and the measurement result of the reference signal by the network device.

[0135] Step 770: The network device sends a signal transmission delay or a transmission delay compensated during transmission delay compensation to the terminal device.

[0136] Step 780: The terminal device performs transmission delay compensation. For example, the terminal device subtracts the signal transmission delay or the transmission delay to be compensated from the expected transmission time of the signal to obtain the actual transmission time of the signal, and transmits the signal according to the actual transmission time to achieve the purpose of transmission delay compensation.

[0137] Please refer to Figure 8 , which shows a flow chart of a method for compensating transmission delay provided by an embodiment of the present application. The method can be applied to Figure 1 In the system architecture shown in FIG. 1 , the method may include the following steps:

[0138] Step 810: The network device sends signal configuration information to the terminal device. The signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0139] Step 820: The network device sends a downlink reference signal to the terminal device. Optionally, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB, CRS, DMRS, TRS.

[0140] Step 830: The terminal device sends an uplink reference signal to the network device. Optionally, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS, PRS, TRS, CSI-RS.

[0141] It should be noted that the embodiment of the present application does not limit the execution order of step 820 and step 830. Optionally, step 820 and step 830 are executed simultaneously, or step 820 is executed after step 830, or step 820 is executed before step 830. Another point to be noted is that the embodiment of the present application does not limit the number of executions of step 820 and step 830. Optionally, both step 820 and step 830 are executed periodically.

[0142] In step 840, the terminal device and the network device respectively perform reference signal measurement. Optionally, the reference signal measurement includes measuring the time difference between the reception and transmission of the uplink and downlink reference signals. For example, for the network device, the reference signal measurement includes measuring the time difference between the reception time of the uplink reference signal and the transmission time of the downlink reference signal.

[0143] Step 850: The network device sends second delay reference information to the terminal device. Optionally, the second delay reference information includes at least one of the following: a sending time of a downlink reference signal, a receiving time of an uplink reference signal, a time difference between a sending time of a downlink reference signal and a receiving time of an uplink reference signal, an index of a downlink reference signal, an index of an uplink reference signal, and a mapping index between a downlink reference signal and an uplink reference signal.

[0144] Step 860: The terminal device determines the signal transmission delay or the transmission delay to be compensated during transmission delay compensation. Optionally, the terminal device determines the signal transmission delay or the transmission delay to be compensated during transmission delay compensation in combination with the second delay reference information sent by the network device and the measurement result of the reference signal by the terminal device.

[0145] Step 870: The terminal device performs transmission delay compensation. For example, the terminal device subtracts the signal transmission delay or the transmission delay to be compensated from the expected transmission time of the signal to obtain the actual transmission time of the signal, and transmits the signal according to the actual transmission time to achieve the purpose of transmission delay compensation.

[0146] It should be noted that in the above method embodiment, the transmission delay compensation method provided by the present application is mainly introduced and explained from the perspective of the interaction between the terminal device and the network device. The above steps performed by the terminal device can be independently implemented as a method for compensating for the transmission delay on the terminal device side; the above steps performed by the network device can be independently implemented as a method for compensating for the transmission delay on the network device side.

[0147] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0148] Please refer to Fig. 9 , which shows a block diagram of a transmission delay compensation device provided by an embodiment of the present application. The device has the function of implementing the above-mentioned terminal device side method example, and the function can be implemented by hardware, or by hardware executing corresponding software. The device can be the terminal device described above, or it can be set in the terminal device. Fig. 9 As shown, the device 900 may include: a configuration information receiving module 910.

[0149] The configuration information receiving module 910 is used to receive signal configuration information from a network device, wherein the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0150] In one example, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS.

[0151] In one example, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB, CRS, DMRS, TRS.

[0152] In one example, the signal configuration information further includes: a binding relationship between the uplink reference signal and the downlink reference signal.

[0153] In one example, if Fig.10 As shown, the device 900 also includes: a first information sending module 922, used to send first delay reference information to the network device, the first delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation.

[0154] In one example, the first delay reference information includes at least one of the following: the reception time of the downlink reference signal, the sending time of the uplink reference signal, the time difference between the reception time of the downlink reference signal and the sending time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0155] In one example, if Fig.10 As shown, the first information sending module 922 is used to: send the first delay reference information to the network device at a first moment; wherein the first moment includes any one of the following: the receiving moment of the downlink reference signal, the moment after the receiving moment of the downlink reference signal, the sending moment of the uplink reference signal, the moment after the sending moment of the uplink reference signal, the second moment, and the moment after the second moment; the second moment is the moment for determining the time difference between the receiving moment of the downlink reference signal and the sending moment of the uplink reference signal.

[0156] In one example, the terminal device periodically sends the first delay reference information to the network device.

[0157] In one example, if Fig.10 As shown, the device 900 also includes: a second information receiving module 921, used to receive second delay reference information from the network device; a transmission delay determination module 923, used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, based on the second delay reference information.

[0158] In one example, the second delay reference information includes at least one of the following: the sending time of the downlink reference signal, the receiving time of the uplink reference signal, the time difference between the sending time of the downlink reference signal and the receiving time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0159] In one example, if Fig.10 As shown, the device also includes: a transmission delay compensation module 930, which is used to perform the transmission delay compensation according to the compensation subject information.

[0160] In one example, the compensation subject information includes at least one of the following: subject indication information from the network device, subject configuration information from the network device, and compensation subject information predefined in a communication protocol.

[0161] In one example, the network device is a network device corresponding to a service cell of the terminal device.

[0162] In one example, the terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting transmission of TSN services, and supporting transmission of gPTP messages.

[0163] In summary, the technical solution provided by the embodiment of the present application configures a reference signal for transmission delay compensation for the terminal device through the network device, and then the terminal device and the network device can determine the signal transmission delay based on the reception and transmission of the reference signal, or determine the transmission delay to be compensated during the transmission delay compensation, so as to further compensate for the transmission delay of the signal transmitted between the terminal device and the network device, and provide a method for compensating for the transmission delay, thereby ensuring the precise synchronization between the terminal device and the network device. In addition, the technical solution provided by the embodiment of the present application can be applied to the 5G system. Since the transmission delay between the terminal device and the network device in the 5G system is compensated, it ensures that the 5G system has higher synchronization accuracy, so that the 5G system meets the synchronization accuracy requirements required by the TSN service.

[0164] Please refer to Fig.11 , which shows a block diagram of a transmission delay compensation device provided by an embodiment of the present application. The device has the function of implementing the above network device side method example, and the function can be implemented by hardware or by hardware executing corresponding software. The device can be the network device described above, or it can be set in the network device. Fig.11 As shown, the device 1100 may include: a configuration information sending module 1110.

[0165] The configuration information sending module 1110 is used to send signal configuration information to the terminal device, and the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0166] In one example, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS.

[0167] In one example, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB, CRS, DMRS, TRS.

[0168] In one example, the signal configuration information further includes: a binding relationship between the uplink reference signal and the downlink reference signal.

[0169] In one example, if Fig.12As shown, the device 1100 also includes: a first information receiving module 1122, used to receive first delay reference information from the terminal device; a transmission delay determination module 1124, used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, based on the first delay reference information.

[0170] In one example, the first delay reference information includes at least one of the following: the reception time of the downlink reference signal, the sending time of the uplink reference signal, the time difference between the reception time of the downlink reference signal and the sending time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0171] In one example, if Fig.12 As shown, the device 1100 also includes: a second information sending module 1121, used to send second delay reference information to the terminal device, and the second delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation.

[0172] In one example, the second delay reference information includes at least one of the following: the sending time of the downlink reference signal, the receiving time of the uplink reference signal, the time difference between the sending time of the downlink reference signal and the receiving time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0173] In one example, if Fig.12 As shown, the second information sending module 1121 is used to: send the second delay reference information to the terminal device at a third moment; wherein the third moment includes any one of the following: the sending moment of the downlink reference signal, the moment after the sending moment of the downlink reference signal, the receiving moment of the uplink reference signal, the moment after the receiving moment of the uplink reference signal, the fourth moment, and the moment after the fourth moment; the fourth moment is the moment for determining the time difference between the sending moment of the downlink reference signal and the receiving moment of the uplink reference signal.

[0174] In one example, the network device periodically sends the second delay reference information to the terminal device.

[0175] In one example, if Fig.12 As shown, the device 1100 also includes: a transmission delay compensation module 1130, which is used to perform the transmission delay compensation according to the compensation subject information.

[0176] In one example, the compensation subject information includes at least one of the following: subject indication information of the network device, subject configuration information of the network device, and compensation subject information predefined in a communication protocol.

[0177] In one example, the network device is a network device corresponding to a service cell of the terminal device.

[0178] In one example, the terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting transmission of TSN services, and supporting transmission of gPTP messages.

[0179] In summary, the technical solution provided by the embodiment of the present application configures a reference signal for transmission delay compensation for the terminal device through the network device, and then the terminal device and the network device can determine the signal transmission delay based on the reception and transmission of the reference signal, or determine the transmission delay to be compensated during the transmission delay compensation, so as to further compensate for the transmission delay of the signal transmitted between the terminal device and the network device, and provide a method for compensating for the transmission delay, thereby ensuring the precise synchronization between the terminal device and the network device. In addition, the technical solution provided by the embodiment of the present application can be applied to the 5G system. Since the transmission delay between the terminal device and the network device in the 5G system is compensated, it ensures that the 5G system has higher synchronization accuracy, so that the 5G system meets the synchronization accuracy requirements required by the TSN service.

[0180] One point that needs to be explained is that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0181] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0182] Please refer to Fig.13 , which shows a schematic diagram of the structure of a terminal device 130 provided in an embodiment of the present application. For example, the terminal device can be used to execute the above-mentioned terminal device side transmission delay compensation method. Specifically, the terminal device 130 may include: a processor 131, and a transceiver 132 connected to the processor 131; wherein:

[0183] The processor 131 includes one or more processing cores. The processor 131 executes various functional applications and information processing by running software programs and modules.

[0184] The transceiver 132 includes a receiver and a transmitter. Optionally, the transceiver 132 is a communication chip.

[0185] In one example, the terminal device 130 further includes: a memory and a bus. The memory is connected to the processor via the bus. The memory can be used to store a computer program, and the processor is used to execute the computer program to implement the various steps performed by the terminal device in the above method embodiment.

[0186] In addition, the memory may be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: RAM (Random-Access Memory) and ROM (Read-Only Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other solid-state storage technology, CD-ROM (Compact Disc Read-Only Memory), DVD (Digital Video Disc) or other optical storage, tape cassettes, magnetic tapes, disk storage or other magnetic storage devices. Among them:

[0187] The transceiver 132 is used to receive signal configuration information from a network device, and the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0188] In one example, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS.

[0189] In one example, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB, CRS, DMRS, TRS.

[0190] In one example, the signal configuration information further includes: a binding relationship between the uplink reference signal and the downlink reference signal.

[0191] In one example, the transceiver 132 is used to send first delay reference information to the network device, and the first delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation.

[0192] In one example, the first delay reference information includes at least one of the following: the reception time of the downlink reference signal, the sending time of the uplink reference signal, the time difference between the reception time of the downlink reference signal and the sending time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0193] In one example, the transceiver 132 is used to: send the first delay reference information to the network device at a first moment; wherein the first moment includes any one of the following: the reception moment of the downlink reference signal, the moment after the reception moment of the downlink reference signal, the transmission moment of the uplink reference signal, the moment after the transmission moment of the uplink reference signal, the second moment, and the moment after the second moment; the second moment is the moment for determining the time difference between the reception moment of the downlink reference signal and the transmission moment of the uplink reference signal.

[0194] In one example, the terminal device periodically sends the first delay reference information to the network device.

[0195] In one example, the transceiver 132 is used to receive second delay reference information from the network device; the processor 131 is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, based on the second delay reference information.

[0196] In one example, the second delay reference information includes at least one of the following: the sending time of the downlink reference signal, the receiving time of the uplink reference signal, the time difference between the sending time of the downlink reference signal and the receiving time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0197] In one example, the processor 131 is used to: perform the transmission delay compensation according to the compensation subject information.

[0198] In one example, the compensation subject information includes at least one of the following: subject indication information from the network device, subject configuration information from the network device, and compensation subject information predefined in a communication protocol.

[0199] In one example, the network device is a network device corresponding to a service cell of the terminal device.

[0200] In one example, the terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting transmission of TSN services, and supporting transmission of gPTP messages.

[0201] Please refer to Fig.14 , which shows a schematic diagram of the structure of a network device 140 provided in an embodiment of the present application. For example, the network device can be used to execute the above-mentioned compensation method for transmission delay on the network device side. Specifically, the network device 140 may include: a processor 141, and a transceiver 142 connected to the processor 141; wherein:

[0202] The processor 141 includes one or more processing cores. The processor 141 executes various functional applications and information processing by running software programs and modules.

[0203] The transceiver 142 includes a receiver and a transmitter. Optionally, the transceiver 142 is a communication chip.

[0204] In one example, the network device 140 further includes: a memory and a bus. The memory is connected to the processor via the bus. The memory can be used to store a computer program, and the processor is used to execute the computer program to implement the various steps performed by the network device in the above method embodiment.

[0205] Furthermore, the memory may be implemented by any type of volatile or non-volatile storage device or combination thereof, including but not limited to: RAM and ROM, EPROM, EEPROM, flash memory or other solid state storage technology, CD-ROM, DVD or other optical storage, cassette, magnetic tape, disk storage or other magnetic storage device. Among them:

[0206] The transceiver 142 is used to send signal configuration information to the terminal device, and the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; wherein the reference signal includes: an uplink reference signal and / or a downlink reference signal.

[0207] In one example, the uplink reference signal includes at least one of the following: SRS, preamble, DMRS.

[0208] In one example, the downlink reference signal includes at least one of the following: PRS, CSI-RS, SSB, CRS, DMRS, TRS.

[0209] In one example, the signal configuration information further includes: a binding relationship between the uplink reference signal and the downlink reference signal.

[0210] In one example, the transceiver 142 is used to receive first delay reference information from the terminal device; the processor 141 is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, based on the first delay reference information.

[0211] In one example, the first delay reference information includes at least one of the following: the reception time of the downlink reference signal, the sending time of the uplink reference signal, the time difference between the reception time of the downlink reference signal and the sending time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0212] In one example, the transceiver 142 is used to: send second delay reference information to the terminal device, wherein the second delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation.

[0213] In one example, the second delay reference information includes at least one of the following: the sending time of the downlink reference signal, the receiving time of the uplink reference signal, the time difference between the sending time of the downlink reference signal and the receiving time of the uplink reference signal, the index of the downlink reference signal, the index of the uplink reference signal, and the mapping index between the downlink reference signal and the uplink reference signal.

[0214] In one example, the transceiver 142 is used to: send the second delay reference information to the terminal device at a third moment; wherein the third moment includes any one of the following: the sending moment of the downlink reference signal, the moment after the sending moment of the downlink reference signal, the receiving moment of the uplink reference signal, the moment after the receiving moment of the uplink reference signal, the fourth moment, and the moment after the fourth moment; the fourth moment is the moment for determining the time difference between the sending moment of the downlink reference signal and the receiving moment of the uplink reference signal.

[0215] In one example, the network device periodically sends the second delay reference information to the terminal device.

[0216] In one example, the processor 141 is used to: perform the transmission delay compensation according to the compensation subject information.

[0217] In one example, the compensation subject information includes at least one of the following: subject indication information of the network device, subject configuration information of the network device, and compensation subject information predefined in a communication protocol.

[0218] In one example, the network device is a network device corresponding to a service cell of the terminal device.

[0219] In one example, the terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting transmission of TSN services, and supporting transmission of gPTP messages.

[0220] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a terminal device to implement the method for compensating the transmission delay on the terminal device side as described above.

[0221] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor of a network device to implement the above-mentioned method for compensating the transmission delay on the network device side.

[0222] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a terminal device, it is used to implement the method for compensating the transmission delay on the terminal device side as described above.

[0223] An embodiment of the present application further provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip runs on a network device, it is used to implement the above-mentioned method for compensating the transmission delay on the network device side.

[0224] An embodiment of the present application also provides a computer program product. When the computer program product is run on a terminal device, the computer executes the method for compensating the transmission delay on the terminal device side as described above.

[0225] The embodiment of the present application also provides a computer program product. When the computer program product runs on a network device, the computer executes the method for compensating the transmission delay on the network device side as described above.

[0226] Those skilled in the art should be aware that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented with hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein the communication media include any media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

[0227] The above description is only an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for compensating transmission delay, characterized in that: Applied in a terminal device, the method comprises: Receiving signal configuration information from a network device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; The reference signal includes: an uplink reference signal and / or a downlink reference signal. The method further comprises: Sending first delay reference information to the network device, wherein the first delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, the first delay reference information comprising: the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal.

2. The method according to claim 1, characterized in that The uplink reference signal includes at least one of the following: a sounding reference signal SRS, a preamble, and a demodulation reference signal DMRS.

3. The method according to claim 1, characterized in that The downlink reference signal includes at least one of the following: a positioning reference signal PRS, a channel state information reference signal CSI-RS, a synchronization signal block SSB, a cell reference signal CRS, DMRS, and a tracking reference signal TRS.

4. The method according to any one of claims 1 to 3, characterized in that: The signal configuration information also includes: a binding relationship between the uplink reference signal and the downlink reference signal, The binding relationship is indicated by a bitmap of the reference signal or a mapping index between an uplink reference signal and a downlink reference signal at a specific position.

5. The method according to claim 1, characterized in that The first delay reference information also includes at least one of the following: a reception time of the downlink reference signal, a transmission time of the uplink reference signal, an index of the downlink reference signal, an index of the uplink reference signal, and a mapping index between the downlink reference signal and the uplink reference signal.

6. The method according to any one of claims 1 to 3, characterized in that: The sending the first delay reference information to the network device includes: Sending the first delay reference information to the network device at a first moment; The first moment includes any one of the following: the moment of receiving the downlink reference signal, the moment after the moment of receiving the downlink reference signal, the moment of sending the uplink reference signal, the moment after the moment of sending the uplink reference signal, the second moment, and the moment after the second moment; the second moment is the moment for determining the time difference between the moment of receiving the downlink reference signal and the moment of sending the uplink reference signal.

7. The method according to claim 1, characterized in that The terminal device periodically sends the first delay reference information to the network device.

8. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: The transmission delay compensation is performed according to the compensation subject information.

9. The method according to claim 8, characterized in that The compensation subject information includes at least one of the following: subject indication information from the network device, subject configuration information from the network device, and compensation subject information predefined in the communication protocol. The compensation subject information is used to implicitly indicate a compensation subject. When the compensation subject information includes that the terminal device performs transmission delay compensation, the terminal device serves as the compensation subject and receives the second delay reference information sent by the network device.

10. The method according to any one of claims 1 to 3, characterized in that: The network device is a network device corresponding to the service cell of the terminal device.

11. The method according to any one of claims 1 to 3, characterized in that: The terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting the transmission of time-sensitive network TSN services, and supporting the transmission of general precision time protocol gPTP messages.

12. A method for compensating transmission delay, characterized in that: Applied in a network device, the method comprises: Sending signal configuration information to a terminal device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; The reference signal includes: an uplink reference signal and / or a downlink reference signal. The method further comprises: Receiving first delay reference information from the terminal device; According to the first delay reference information, the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, is determined. The first delay reference information includes: the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal.

13. The method according to claim 12, characterized in that The uplink reference signal includes at least one of the following: a sounding reference signal SRS, a preamble, and a demodulation reference signal DMRS.

14. The method according to claim 12, characterized in that The downlink reference signal includes at least one of the following: a positioning reference signal PRS, a channel state information reference signal CSI-RS, a synchronization signal block SSB, a cell reference signal CRS, DMRS, and a tracking reference signal TRS.

15. The method according to any one of claims 12 to 14, characterized in that The signal configuration information also includes: a binding relationship between the uplink reference signal and the downlink reference signal, The binding relationship is indicated by a bitmap of the reference signal or a mapping index between an uplink reference signal and a downlink reference signal at a specific position.

16. The method according to claim 12, characterized in that The first delay reference information also includes at least one of the following: a reception time of the downlink reference signal, a transmission time of the uplink reference signal, an index of the downlink reference signal, an index of the uplink reference signal, and a mapping index between the downlink reference signal and the uplink reference signal.

17. The method according to any one of claims 12 to 14, characterized in that The method further comprises: The transmission delay compensation is performed according to the compensation subject information.

18. The method according to claim 17, characterized in that The compensation subject information includes at least one of the following: subject indication information of the network device, subject configuration information of the network device, and compensation subject information predefined in the communication protocol. The compensation subject information is used to implicitly indicate a compensation subject. When the compensation subject information includes that the terminal device performs transmission delay compensation, the terminal device serves as the compensation subject and receives the second delay reference information sent by the network device.

19. The method according to any one of claims 12 to 14, characterized in that The network device is a network device corresponding to the service cell of the terminal device.

20. The method according to any one of claims 12 to 14, characterized in that The terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting the transmission of time-sensitive network TSN services, and supporting the transmission of general precision time protocol gPTP messages.

21. A transmission delay compensation device, characterized in that: Set in a terminal device, the device includes: A configuration information receiving module, used to receive signal configuration information from a network device, wherein the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; The reference signal includes: an uplink reference signal and / or a downlink reference signal. The device also includes: a first information sending module, used to send first delay reference information to the network device, the first delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, the first delay reference information includes: the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal.

22. The device according to claim 21, characterized in that The uplink reference signal includes at least one of the following: a sounding reference signal SRS, a preamble, and a demodulation reference signal DMRS.

23. The device according to claim 21, characterized in that The downlink reference signal includes at least one of the following: a positioning reference signal PRS, a channel state information reference signal CSI-RS, a synchronization signal block SSB, a cell reference signal CRS, DMRS, and a tracking reference signal TRS.

24. The device according to any one of claims 21 to 23, characterized in that The signal configuration information also includes: a binding relationship between the uplink reference signal and the downlink reference signal, The binding relationship is indicated by a bitmap of the reference signal or a mapping index between an uplink reference signal and a downlink reference signal at a specific position.

25. The device according to claim 21, characterized in that The first delay reference information also includes at least one of the following: a reception time of the downlink reference signal, a transmission time of the uplink reference signal, an index of the downlink reference signal, an index of the uplink reference signal, and a mapping index between the downlink reference signal and the uplink reference signal.

26. The device according to any one of claims 21 to 23, characterized in that The first information sending module is used to: Sending the first delay reference information to the network device at a first moment; The first moment includes any one of the following: the moment of receiving the downlink reference signal, the moment after the moment of receiving the downlink reference signal, the moment of sending the uplink reference signal, the moment after the moment of sending the uplink reference signal, the second moment, and the moment after the second moment; the second moment is the moment for determining the time difference between the moment of receiving the downlink reference signal and the moment of sending the uplink reference signal.

27. The device according to any one of claims 21 to 23, characterized in that The terminal device periodically sends the first delay reference information to the network device.

28. The device according to any one of claims 21 to 23, characterized in that The device also includes: The transmission delay compensation module is used to perform the transmission delay compensation according to the compensation subject information.

29. The device according to claim 28, characterized in that The compensation subject information includes at least one of the following: subject indication information from the network device, subject configuration information from the network device, and compensation subject information predefined in the communication protocol. The compensation subject information is used to implicitly indicate a compensation subject. When the compensation subject information includes that the terminal device performs transmission delay compensation, the terminal device serves as the compensation subject and receives the second delay reference information sent by the network device.

30. The device according to any one of claims 21 to 23, characterized in that The network device is a network device corresponding to the service cell of the terminal device.

31. The device according to any one of claims 21 to 23, characterized in that The terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting the transmission of time-sensitive network TSN services, and supporting the transmission of general precision time protocol gPTP messages.

32. A transmission delay compensation device, characterized in that: Set in a network device, the device includes: A configuration information sending module, used to send signal configuration information to a terminal device, wherein the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; The reference signal includes: an uplink reference signal and / or a downlink reference signal. The device also includes: A first information receiving module, used to receive first delay reference information from the terminal device; A transmission delay determination module is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, based on the first delay reference information, wherein the first delay reference information includes: the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal.

33. The device according to claim 32, characterized in that The uplink reference signal includes at least one of the following: a sounding reference signal SRS, a preamble, and a demodulation reference signal DMRS.

34. The device according to claim 32, characterized in that The downlink reference signal includes at least one of the following: a positioning reference signal PRS, a channel state information reference signal CSI-RS, a synchronization signal block SSB, a cell reference signal CRS, DMRS, and a tracking reference signal TRS.

35. The device according to any one of claims 32 to 34, characterized in that The signal configuration information also includes: a binding relationship between the uplink reference signal and the downlink reference signal, The binding relationship is indicated by a bitmap of the reference signal or a mapping index between an uplink reference signal and a downlink reference signal at a specific position.

36. The device according to claim 32, characterized in that The first delay reference information also includes at least one of the following: a reception time of the downlink reference signal, a transmission time of the uplink reference signal, an index of the downlink reference signal, an index of the uplink reference signal, and a mapping index between the downlink reference signal and the uplink reference signal.

37. The device according to any one of claims 32 to 34, characterized in that The device also includes: The transmission delay compensation module is used to perform the transmission delay compensation according to the compensation subject information.

38. The device according to claim 37, characterized in that The compensation subject information includes at least one of the following: subject indication information of the network device, subject configuration information of the network device, and compensation subject information predefined in the communication protocol. The compensation subject information is used to implicitly indicate a compensation subject. When the compensation subject information includes that the terminal device performs transmission delay compensation, the terminal device serves as the compensation subject and receives the second delay reference information sent by the network device.

39. The device according to any one of claims 32 to 34, characterized in that The network device is a network device corresponding to the service cell of the terminal device.

40. The device according to any one of claims 32 to 34, characterized in that The terminal device meets at least one of the following conditions: having high-precision transmission requirements, supporting the transmission of time-sensitive network TSN services, and supporting the transmission of general precision time protocol gPTP messages.

41. A terminal device, characterized in that: The terminal device comprises: a processor, and a transceiver connected to the processor; wherein: The transceiver is used to receive signal configuration information from a network device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; The reference signal includes: an uplink reference signal and / or a downlink reference signal. The transceiver is also used to: send first delay reference information to the network device, the first delay reference information is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, the first delay reference information includes: the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal.

42. A network device, characterized in that: The network device comprises: a processor, and a transceiver connected to the processor; wherein: The transceiver is used to send signal configuration information to the terminal device, where the signal configuration information is used to configure a reference signal for transmission delay compensation between the terminal device and the network device; The reference signal includes: an uplink reference signal and / or a downlink reference signal. The transceiver is also used to receive first delay reference information from the terminal device; The processor is used to determine the signal transmission delay between the terminal device and the network device, or the transmission delay compensated during the transmission delay compensation, based on the first delay reference information, wherein the first delay reference information includes: the time difference between the reception time of the downlink reference signal and the transmission time of the uplink reference signal.

43. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to be executed by a processor of a terminal device to implement the method for compensating the transmission delay as described in any one of claims 1 to 11.

44. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and the computer program is used to be executed by a processor of a network device to implement the method for compensating the transmission delay as described in any one of claims 12 to 20.

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