Information receiving and sending method, communication node and storage medium

Abstract

The invention discloses an information receiving and sending method, a communication node and a storage medium. The information receiving method comprises the following steps: receiving first information sent by a second communication node, wherein the first information is used for indicating a first communication node to initiate propagation delay measurement; and measuring the propagation delay according to the first information.

Description

[0001] This application is a divisional application of the invention patent application filed on January 5, 2022, with application number 202210006722.2 and invention title "A method for receiving and sending information, a communication node and a storage medium". Technical Field

[0002] This application relates to the field of communication technology, such as an information receiving and sending method, a communication node, and a storage medium. Background Technology

[0003] Currently, research on 5G New Radio (NR) technology has found that the timing synchronization error between base stations and terminal devices does not exceed 540 ns. The propagation delay from different terminal devices within a cell can vary with their distance from the base station. To ensure orthogonality between different terminal devices, transmission needs to be aligned within the duration of the cyclic prefix at the receiving end. Therefore, how to compensate for propagation delay has become a pressing problem to be solved. Summary of the Invention

[0004] This application provides an information receiving method, applied to a first communication node, including:

[0005] Receive first information sent by the second communication node, the first information being used to instruct the first communication node to initiate a propagation delay measurement;

[0006] Based on the initial information, the propagation delay is measured.

[0007] This application provides an information sending method applied to a second communication node, including:

[0008] Send a first message to the first communication node, the first message being used to instruct the first communication node to initiate a propagation delay measurement.

[0009] This application provides an information transmission method applied to a third communication node, including:

[0010] The first communication node will send a third message to the second communication node. This third message is a special message used for the request, indicating that the first communication node will switch from the second communication node to the third communication node.

[0011] This application provides a communication node, including: a processor; the processor is used to implement the method of any of the above embodiments when executing a computer program.

[0012] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the method of any of the above embodiments.

[0013] Further details regarding the above embodiments and other aspects of this application, as well as their implementations, are provided in the accompanying drawings, detailed description, and claims. Attached Figure Description

[0014] Figure 1 This is a network diagram of a wireless communication system provided in one embodiment;

[0015] Figure 2 This is a network diagram of another wireless communication system provided in one embodiment;

[0016] Figure 3 This is a flowchart illustrating an information receiving method provided in one embodiment;

[0017] Figure 4 This is a flowchart illustrating an information sending method provided in one embodiment;

[0018] Figure 5 This is a flowchart illustrating another information sending method provided in one embodiment;

[0019] Figure 6 This is a flowchart illustrating an information transmission method provided in one embodiment;

[0020] Figure 7 This is a flowchart of another information transmission method provided in one embodiment;

[0021] Figure 8 This is a flowchart illustrating another information transmission method provided in one embodiment;

[0022] Figure 9 This is a flowchart illustrating another information transmission method provided in one embodiment;

[0023] Figure 10 This is a flowchart illustrating another information transmission method provided in one embodiment;

[0024] Figure 11 This is a schematic diagram of a switching process provided in one embodiment;

[0025] Figure 12 This is a flowchart of another information transmission method provided in one embodiment;

[0026] Figure 13 This is a schematic diagram of another switching process provided in one embodiment;

[0027] Figure 14 This is a flowchart of yet another information transmission method provided in one embodiment;

[0028] Figure 15This is a schematic diagram of the structure of an information receiving device provided in one embodiment;

[0029] Figure 16 This is a schematic diagram of the structure of another information receiving device provided in one embodiment;

[0030] Figure 17 This is a schematic diagram of the structure of an information transmission device provided in one embodiment;

[0031] Figure 18 This is a schematic diagram of the structure of another information transmission device provided in one embodiment;

[0032] Figure 19 This is a schematic diagram of the structure of another information transmission device provided in one embodiment;

[0033] Figure 20 This is a schematic diagram of the structure of another information transmission device provided in one embodiment;

[0034] Figure 21 This is a schematic diagram of the structure of a base station provided in one embodiment;

[0035] Figure 22 This is a schematic diagram of the structure of a UE provided in one embodiment. Detailed Implementation

[0036] It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0037] Currently, Long Term Evolution (LTE) systems specify a reference time on the network, meaning LTE systems do not compensate for radio frequency (RF) propagation delay. However, in the 5G NR Industrial Internet of Things (IIoT) research project, the radio access network (RAN) analyzed the achievable time synchronization accuracy on the UU interface between next-generation node Bs (gNBs) and individual user equipment (UEs). According to the RAN's assessment, the timing synchronization error between the gNB and the UE does not exceed 540 ns. For small service areas with dense cell deployments, propagation delay compensation may not be necessary; however, for larger service areas with sparse cell deployments, such as cell radii exceeding 200 meters, propagation delay compensation is required.

[0038] The propagation delay from different user equipment (UEs) within a cell can vary with their distance from the base station. 3GPP systems based on Orthogonal Frequency Division Multiplexing (OFDM), such as LTE and NR systems, are highly sensitive to time deviations between transmissions of different UEs due to propagation delay. To ensure orthogonality between different UEs, transmissions need to be aligned within the duration of the cyclic prefix at the receiver. Therefore, how to compensate for propagation delay has become a pressing issue.

[0039] The information receiving and sending methods provided in this application can be applied to various wireless communication systems, such as LTE systems, 5G systems, LTE and 5G hybrid architecture systems, 5G NR systems, and new communication systems that will emerge in the future development of communication, such as 6th generation mobile communication technology (6G) systems. Figure 1 A network diagram of a wireless communication system according to an embodiment is shown. Figure 1 As shown, the wireless communication system includes a terminal device 110, an access network device 120, and a core network device 130.

[0040] Terminal device 110 can also be referred to as a terminal, UE, mobile station, mobile terminal, etc. A terminal device can be a device that provides voice / data connectivity to a user, such as a handheld device with wireless connectivity, an in-vehicle device, etc. Examples of terminals include: mobile phones, tablets, computers with wireless transceiver capabilities, virtual reality terminal devices, augmented reality terminal devices, wireless terminals in industrial control, wireless terminals in autonomous driving, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc. The embodiments of this application do not limit the specific technology or device form used in the terminal device.

[0041] Access network device 120 is an access device through which terminal device 110 wirelessly accesses the wireless communication system. It can be a base station, evolved NodeB (eNodeB), transmission reception point (TRP), gNB, a base station in a future mobile communication system, or an access node in a WiFi system; it can also be a module or unit that performs some of the functions of a base station, for example, a centralized unit (CU) or a distributed unit (DU). The embodiments of this application do not limit the specific technology or device form used in the access network device.

[0042] Core network equipment 130 may include access and mobility management network elements and session management network elements. For example, terminal equipment 110 can access the core network through access network equipment 120 to achieve data transmission.

[0043] Since the information receiving and sending methods in this application are mainly based on 5G mobile communication technology and other future mobile communication technologies, the following will combine... Figure 2 This application introduces another wireless communication system architecture—the 5G system architecture—based on embodiments of this application. Figure 2 A network diagram of another wireless communication system provided in one embodiment is shown.

[0044] like Figure 2 As shown, the terminal device (UE) connects to the radio access network via the LTE-UU interface and / or NR-UU interface through next-generation eNodeBs (ng-eNBs) and gNBs. The radio access network connects to the core network via the NG-C interface through the Access and Mobility Management Function (AMF). The next-generation radio access network (NG-RAN) includes one or more ng-eNBs and one or more gNBs. The ng-eNB is an LTE base station accessing the 5G core network, and the gNB is a 5G base station accessing the 5G core network. The core network includes functions such as AMF and Location Management Function (LMF). The AMF is configured to implement functions such as access management, while the LMF is configured to implement functions such as positioning. The AMF and LMF are connected via the NLs interface. The LMF is a device or component deployed in the core network to provide positioning functionality to the UE.

[0045] It is understood that the network architecture of this application embodiment is not limited to this, and any network architecture capable of implementing the functions of the above-described network elements is applicable to the embodiments of this application. Furthermore, Figure 2The names of the various network elements included (such as AMF, LMF, etc.) are merely examples and do not limit the functions of the network elements themselves. In 5G networks and other future networks, the aforementioned network elements may also have other names, and this application embodiment does not specifically limit them. For example, in 6G networks, some or all of the aforementioned network elements may use the terminology from 5G, or they may use other names, etc.

[0046] In this application embodiment, an information receiving and sending method, a communication node and a storage medium that can be operated in the above-mentioned wireless communication system are provided, and a strategy for compensating for propagation delay is proposed, thereby improving communication quality and the reliability of the communication system.

[0047] The following describes the methods for receiving and sending information, the communication nodes, and their technical effects.

[0048] Figure 3 A flowchart illustrating an embodiment of an information receiving method is shown, as follows: Figure 3 As shown, the method provided in this embodiment is applicable to a first communication node (such as a UE), and the method includes the following steps.

[0049] S110. Receive first information sent by the second communication node, the first information being used to instruct the first communication node to initiate a propagation delay measurement.

[0050] In one embodiment, the first information includes at least one of the following:

[0051] Configuration information for Round-Trip Time (RTT) measurement;

[0052] Instructions to initiate propagation delay measurement;

[0053] Instructions for providing propagation delay compensation;

[0054] Reference clock information.

[0055] In one embodiment, the first information is a Radio Resource Control (RRC) message, and the configuration information for RTT measurement includes at least one of the following: Positioning Reference Sign (PRS), Channel-State Information Reference Sign (CSI-RS), and Sounding Reference Sign (SRS).

[0056] In one embodiment, the indication information for initiating a propagation delay measurement includes at least one of the following:

[0057] Indication to trigger the start of propagation delay measurement;

[0058] Indication to trigger the reporting of propagation delay measurements;

[0059] The SRS identifier (ID) indicates;

[0060] PRS identification;

[0061] CSI-RS identification indication;

[0062] The period for measuring propagation delay;

[0063] The time difference between receiving and transmitting Rx-Tx at the second communication node;

[0064] Clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0065] If the indication information for initiating propagation delay measurement includes an indication to trigger the initiation of propagation delay measurement; the method further includes: sending the Rx-Tx time difference of the first communication node to the second communication node.

[0066] If the indication information for initiating the propagation delay measurement includes the period of the propagation delay measurement, the method further includes: periodically sending the Rx-Tx time difference of the first communication node to the second communication node.

[0067] In one embodiment, the indication information for propagation delay compensation is either the indication information for the first communication node to perform propagation delay compensation, or the indication information for the second communication node to perform propagation delay pre-compensation.

[0068] Wherein, if the indication information for propagation delay compensation is the indication information for propagation delay compensation by the first communication node; the method further includes: receiving at least one of the Rx-Tx time difference of the second communication node and the clock error group ID associated with the Rx-Tx time difference of the second communication node sent by the second communication node.

[0069] Wherein, if the indication information for propagation delay compensation is the indication information for the second communication node to perform propagation delay pre-compensation; the method further includes: sending to the second communication node at least one of the Rx-Tx time difference of the first communication node and the clock error group ID associated with the Rx-Tx time difference of the first communication node.

[0070] In one embodiment, the reference clock information is unicast by the second communication node, or the reference clock information is broadcast by the second communication node.

[0071] S120. Based on the first information, measure the propagation delay.

[0072] In this application, the propagation delay can be measured using the RTT method.

[0073] In one embodiment, the method further includes: receiving second information sent by a second communication node, the second information including at least one of downlink information transmission and broadcast SIB9.

[0074] The second information includes at least one of the following:

[0075] Enable indication information; disable indication information; indication information for using Timing Advance (TA) for propagation delay compensation; indication information for using RTT for propagation delay compensation; indication information for the reference clock not requiring propagation delay compensation; indication information for the second communication node to perform propagation delay pre-compensation.

[0076] In one embodiment, for a scenario where the first communication node is about to switch from the second communication node to the third communication node, the method further includes:

[0077] The Survival Time (ST) monitoring information is sent to the third communication node. The ST monitoring information is used to indicate that the third communication node exits the ST state.

[0078] ST monitoring information includes at least one of the following: message 1 of random access information, message 3 of random access information, handover completion information, and RRC reconfiguration completion information.

[0079] Figure 4 A flowchart illustrating an embodiment of an information sending method is shown, as follows. Figure 4 As shown, the method provided in this embodiment is applicable to a second communication node (such as a gNB), and the method includes the following steps.

[0080] S210. Send first information to the first communication node, the first information being used to instruct the first communication node to initiate a propagation delay measurement.

[0081] In one embodiment, the first information includes at least one of the following:

[0082] RTT measurement configuration information;

[0083] Instructions to initiate propagation delay measurement;

[0084] Instructions for providing propagation delay compensation;

[0085] Reference clock information.

[0086] In one embodiment, the first information is an RRC message, and the configuration information for RTT measurement includes at least one of PRS, CSI-RS, and SRS.

[0087] In one embodiment, the indication information for initiating a propagation delay measurement includes at least one of the following:

[0088] Indication to trigger the start of propagation delay measurement;

[0089] Indication to trigger the reporting of propagation delay measurements;

[0090] SRS identification indication;

[0091] PRS identification;

[0092] CSI-RS identification indication;

[0093] The period for measuring propagation delay;

[0094] The time difference between receiving and transmitting Rx-Tx at the second communication node;

[0095] Clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0096] If the indication information for initiating propagation delay measurement includes an indication to trigger the initiation of propagation delay measurement; the method further includes: receiving the Rx-Tx time difference of the first communication node sent by the first communication node.

[0097] If the indication information for initiating the propagation delay measurement includes the period of the propagation delay measurement; the method further includes: periodically receiving the Rx-Tx time difference of the first communication node sent by the first communication node.

[0098] In one embodiment, the indication information for propagation delay compensation is either the indication information for the first communication node to perform propagation delay compensation, or the indication information for the second communication node to perform propagation delay pre-compensation.

[0099] Wherein, if the indication information for propagation delay compensation is the indication information for propagation delay compensation of the first communication node; the method further includes: sending to the first communication node at least one of the Rx-Tx time difference of the second communication node and the clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0100] Wherein, if the indication information for propagation delay compensation is the indication information for the second communication node to perform propagation delay pre-compensation; the method further includes: receiving at least one of the Rx-Tx time difference of the first communication node and the clock error group ID associated with the Rx-Tx time difference of the first communication node sent by the first communication node.

[0101] In one embodiment, the reference clock information is unicast by the second communication node, or the reference clock information is broadcast by the second communication node.

[0102] In one embodiment, the method further includes at least one of the following steps:

[0103] Broadcast the second message, which is SI B9;

[0104] Send the second message to the first communication node.

[0105] The second information includes at least one of the following:

[0106] Enable indication information; disable indication information; indication information for using timing advance TA for propagation delay compensation; indication information for using RTT for propagation delay compensation; indication information for the reference clock not requiring propagation delay compensation; indication information for the second communication node to perform propagation delay pre-compensation.

[0107] In one embodiment, the method further includes:

[0108] Send a first dedicated message to the fourth communication node, the first dedicated message being used to request the propagation delay compensation value of the RTT measurement; receive a second dedicated message sent by the fourth communication node, the second dedicated message including the propagation delay compensation value of the RTT measurement.

[0109] The first special information includes any one of the following: handover request confirmation information, path handover request information, message release completion information, context release information, paging information, and location report information;

[0110] The second special information includes any one of the following: handover command information, path handover request confirmation information, message release command information, downlink state change information, paging information, and location report control information.

[0111] In one embodiment, for a scenario where the first communication node is about to switch from the second communication node to the third communication node, the method further includes:

[0112] Receive third dedicated information sent by the third communication node, the third dedicated information including configuration information for RTT measurement; send handover information to the first communication node, the handover information including configuration information for RTT measurement.

[0113] In one embodiment, for a scenario where the first communication node is about to switch from the second communication node to the third communication node, the method further includes:

[0114] Receive a fourth dedicated message sent by a third communication node, which is used to request ST monitoring information; send a fifth dedicated message to the third communication node, which includes ST monitoring information.

[0115] Figure 5 A flowchart illustrating another information sending method provided in one embodiment is shown, such as... Figure 5 As shown, the method provided in this embodiment is applicable to a third communication node (such as a gNB), and the method includes the following steps.

[0116] S310. Send a third message to the second communication node. The third message is a special message used for the request. The first communication node will switch from the second communication node to the third communication node.

[0117] In one embodiment, the third information is third dedicated information, which includes configuration information for RTT measurement.

[0118] In one embodiment, the third information is fourth dedicated information, which is used to request ST monitoring information; the method further includes: receiving fifth dedicated information sent by the second communication node, which includes ST monitoring information.

[0119] The following are some exemplary implementation methods used to explain the embodiments of this application. Figures 3-5 The provided method can be implemented individually or in combination according to the following exemplary embodiments. In the following exemplary embodiments, when there is no handover scenario, the first communication node is denoted as UE, the second communication node is denoted as gNB, and the fourth communication node is denoted as AMF; when there is a handover scenario, the first communication node is denoted as UE, the second communication node is denoted as source gNB, the third communication node is denoted as target gNB, and the fourth communication node is denoted as AMF.

[0120] In the first exemplary embodiment, a method based on RTT (Round-Trip Time) is proposed, where the UE performs propagation delay compensation. Specifically, Figure 6 A flowchart illustrating an embodiment of an information transmission method is shown. Figure 6 As shown, the method includes the following steps.

[0121] S601 and gNB send the first information to the UE, which is used to instruct the UE to initiate a propagation delay measurement.

[0122] The first information includes at least one of the following: configuration information of the gNB specifically for RTT measurement; indication information for the UE to initiate propagation delay measurement; indication information for performing propagation delay compensation; and reference clock information.

[0123] In one embodiment, the configuration information for RTT measurement includes at least one of PRS, CSI-RS, and SRS.

[0124] In one embodiment, the indication information for the UE to initiate propagation delay measurement includes at least one of the following: an indication to trigger the UE to initiate propagation delay measurement; an indication to trigger the reporting of propagation delay measurement values; an identification indication of SRS; an identification indication of PRS; an identification indication of CSI-RS; the period during which the UE performs the propagation delay measurement; the Rx-Tx time difference of the gNB; and the clock error group ID associated with the Rx-Tx time difference of the gNB.

[0125] The method further includes: sending the Rx-Tx time difference of the UE to the gNB if the indication information for initiating the propagation delay measurement includes an indication that triggers the UE to initiate the propagation delay measurement;

[0126] If the indication information for the UE to initiate propagation delay measurement includes the period of the propagation delay measurement, the method further includes: periodically sending the UE's Rx-Tx time difference to the gNB.

[0127] In one embodiment, the indication information for performing propagation delay compensation is an indication information for the UE to perform propagation delay compensation. The reference clock information can be unicast to the UE by the gNB or broadcast to the gNB. Accordingly, when the reference clock information is unicast to the UE by the gNB, the indication information for performing propagation delay compensation instructs that one UE to perform propagation delay compensation; when the reference clock information is broadcast to the gNB, the indication information for performing propagation delay compensation instructs all UEs to perform propagation delay compensation.

[0128] Specifically, the gNB can send at least one of the following through RRC messages or pre-defined Downlink Control Information (DCI) messages: configuration information for RTT measurement, indication information for UE to initiate propagation delay measurement, and indication information for propagation delay compensation.

[0129] RRC messages contain at least one of the following: RRC Reset, RRC Reconfiguration, RRC Resume, RRC Reject, or RRC Setup; Predefined DCI messages are in the format of a predefined Media Access Control Element (MACCE) that triggers propagation delay measurements, indicated by a reserved LCID (Local Area Setting ID) in the Downlink Shared Channel (DLSCH).

[0130] S602, the UE receives the first information sent by the gNB.

[0131] S603, UE measures the propagation delay based on the first information.

[0132] After receiving the first message from the gNB, the UE initiates a measurement of the propagation delay. For details, refer to... Figure 6 As shown, the UE sends a data packet to the gNB at time T1; the gNB receives the data packet at time T2 and sends a data packet to the UE at time T3; the UE receives the data packet at time T4. That is, in this application, the Rx-Tx time difference of the gNB is equal to T3-T2, and the Rx-Tx time difference of the UE is equal to T4-T1.

[0133] In one embodiment, the UE measuring the propagation delay may include at least one of the following: the UE periodically measuring the propagation delay; the UE triggering the measurement when it receives reference clock information sent by the gNB; the UE triggering the measurement when it initiates a reference clock information request in the case that the gNB unicasts the reference clock information; the UE triggering the measurement when it receives an indication message to initiate the propagation delay measurement; or the UE triggering the measurement when it receives an indication message to perform propagation delay compensation (PDC).

[0134] The periodic value of the propagation delay measured periodically by the UE is configured by the UE or by the gNB. This periodic value is in nanoseconds (ns) or Tc (the basic time unit of NR) and is the same as the periodic value of the reference clock information sent by the gNB unicast / broadcast.

[0135] S604. The gNB sends the UE at least one of the following: the Rx-Tx time difference of the gNB and the clock error group ID associated with the Rx-Tx time difference of the gNB.

[0136] In one embodiment, the gNB can transmit at least one of the gNB's Rx-Tx time difference and the clock error group ID associated with the gNB's Rx-Tx time difference via a predetermined MAC CE.

[0137] S605, the UE receives at least one of the following: the Rx-Tx time difference of the gNB transmitted by the gNB and the clock error group ID associated with the Rx-Tx time difference of the gNB.

[0138] In a second exemplary embodiment, a scheme is proposed where the gNB performs propagation delay compensation based on RTT (Reference Time Tolerance) when the gNB unicasts reference clock information. Specifically, Figure 7 A flowchart illustrating another information transmission method provided in one embodiment is shown. Figure 7 As shown, the method includes the following steps.

[0139] S701 and gNB send the first information to the UE, which is used to instruct the UE to initiate a propagation delay measurement.

[0140] The first information includes at least one of the following: configuration information of the gNB specifically for RTT measurement; indication information for the UE to initiate propagation delay measurement; and indication information for performing propagation delay compensation.

[0141] In one embodiment, the configuration information for RTT measurement includes at least one of PRS, CSI-RS, and SRS.

[0142] In one embodiment, the indication information for the UE to initiate propagation delay measurement includes at least one of the following: an indication to trigger the UE to initiate propagation delay measurement; an indication to trigger the reporting of propagation delay measurement values; an identification indication of SRS; an identification indication of PRS; an identification indication of CSI-RS; the period during which the UE performs the propagation delay measurement; the Rx-Tx time difference of the gNB; and the clock error group ID associated with the Rx-Tx time difference of the gNB.

[0143] The method further includes: sending the Rx-Tx time difference of the UE to the gNB if the indication information for initiating the propagation delay measurement includes an indication that triggers the UE to initiate the propagation delay measurement;

[0144] If the indication information for the UE to initiate propagation delay measurement includes the period of the propagation delay measurement, the method further includes: periodically sending the UE's Rx-Tx time difference to the gNB.

[0145] In one embodiment, the instruction information for propagation delay compensation is the instruction information for gNB to perform propagation delay compensation.

[0146] Specifically, the gNB can send at least one of the following through RRC messages or pre-defined DCI messages: configuration information for RTT measurement, indication information for UE to initiate propagation delay measurement, and indication information for propagation delay compensation.

[0147] RRC messages contain at least one of the following: RRC Reset, RRC Reconfiguration, RRC Resume, RRC Reject, or RRC Setup; the predefined DCI message is a predefined MAC CE format that triggers propagation delay measurement, indicated by the LCID reserved in DLSCH.

[0148] S702, the UE receives the first information sent by the gNB.

[0149] S703, UE measures the propagation delay based on the first information.

[0150] After receiving the first message from the gNB, the UE initiates a measurement of the propagation delay. For details, refer to... Figure 7 As shown, the UE sends a data packet to the gNB at time T1; the gNB receives the data packet at time T2 and sends a data packet to the UE at time T3; the UE receives the data packet at time T4. That is, in this application, the Rx-Tx time difference of the gNB is equal to T3-T2, and the Rx-Tx time difference of the UE is equal to T4-T1.

[0151] In one embodiment, the UE measuring the propagation delay may include at least one of the following: the UE periodically measuring the propagation delay; the UE triggering the measurement when initiating a reference clock information request; or the UE triggering the measurement when it receives an indication message to initiate a propagation delay measurement.

[0152] The periodic value of the propagation delay measured periodically by the UE is configured by the UE or by the gNB. This periodic value is in nanoseconds (ns) or Tc (the basic time unit of NR) and is the same as the periodic value of the reference clock information unicast by the gNB.

[0153] S704. The UE sends to the gNB at least one of the following: the UE's Rx-Tx time difference and the clock error group ID associated with the UE's Rx-Tx time difference.

[0154] In one embodiment, the UE may send at least one of the UE's Rx-Tx time difference and the clock error group ID associated with the UE's Rx-Tx time difference via an RRC message or a predetermined MAC CE.

[0155] S705, gNB receives at least one of the following from the UE: the UE's Rx-Tx time difference and the clock error group ID associated with the UE's Rx-Tx time difference.

[0156] In a third exemplary embodiment, an enabling / disabling scheme based on the first exemplary embodiment described above is proposed. Specifically, Figure 8 A flowchart illustrating another information transmission method provided in one embodiment is shown. Figure 8 As shown, the method includes the following steps.

[0157] S801 a. The gNB sends a second message to the UE, which is a downlink information transmission.

[0158] When the gNB unicasts an instruction to the UE to perform propagation delay compensation, the gNB provides the instruction through downlink information transmission (DLInformationTransfer), which includes enable and / or disable indication information.

[0159] Specifically, the enable indication information includes at least one of the following: the UE needs to perform propagation delay compensation, the UE uses the version 16 (R16) method for propagation delay compensation, or the UE uses the version 17 (R17) method for propagation delay compensation; the disable indication information includes at least one of the following: the UE's reference clock error does not need to be compensated, the UE's reference clock error does not need to be compensated and the UE stops propagation delay measurement, or the gNB has performed pre-compensation.

[0160] In one embodiment, the above information is indicated by 1 bit or 2 bits during downlink information transmission. For example, in the case of 1 bit, 0 indicates enable (i.e., the UE needs to perform propagation delay compensation) and 1 indicates disable (i.e., the UE's reference clock error does not need to be compensated); in the case of 2 bits, 00 indicates that propagation delay compensation using method R16 is enabled, 01 indicates that propagation delay compensation using method R17 is enabled; 10 indicates that it is disabled and the UE's reference clock error does not need to be compensated, and 11 indicates that it is disabled and the gNB has performed pre-compensation.

[0161] S801 b and gNB broadcast the second information, which is SI B9.

[0162] When the gNB broadcasts an instruction to the UE on whether to perform propagation delay compensation, the gNB broadcasts SIB9 containing enable and / or disable instruction information.

[0163] Specifically, the enable indication information includes at least one of the following: all UEs need to perform propagation delay compensation, all UEs use the R16 method for propagation delay compensation, and all UEs use the R17 method for propagation delay compensation; the disable indication information includes at least one of the following: the reference clock error of all UEs does not need to be compensated.

[0164] In one embodiment, the above information is indicated by 1 bit or 2 bits in the SIB transmission. For example, in the case of 1 bit, 0 indicates enable (i.e., all UEs need to perform propagation delay compensation) and 1 indicates disable (i.e., the reference clock error of all UEs does not need to be compensated); in the case of 2 bits, 00 indicates that propagation delay compensation is enabled using the R16 method, 01 indicates that propagation delay compensation is enabled using the R17 method; 10 indicates that it is disabled and the reference clock error of all UEs does not need to be compensated.

[0165] The above steps S801 a and S801 b can be performed by either one or both. This application embodiment does not impose specific restrictions on this.

[0166] S802, the UE receives the second information sent by the gNB.

[0167] In one embodiment, the second information includes at least one of the following: enable indication information; disable indication information; indication information for propagation delay compensation using TA; indication information for propagation delay compensation using RTT; indication information for the reference clock not requiring propagation delay compensation; and indication information for gNB performing propagation delay pre-compensation.

[0168] In a fourth exemplary embodiment, a scheme is proposed in which the gNB requests the propagation delay compensation value measured by the RTT from the AMF when the gNB performs propagation delay compensation. Specifically, Figure 9 A flowchart illustrating another information transmission method provided in one embodiment is shown. Figure 9 As shown, the method includes the following steps.

[0169] S901 and gNB send a first dedicated message to AMF, which is used to request the propagation delay compensation value of RTT measurement.

[0170] If the gNB determines that propagation delay compensation will be performed by the gNB based on the capabilities reported by the UE and the configuration information of the gNB, the gNB requests the propagation delay compensation value measured by RTT from the AMF through the first dedicated information.

[0171] Specifically, the first special information includes any one of the following: HANDOVERREQUEST ACKNOWLEDGE, PATH SWITCH REQUEST, UE CONTEXT RELEASE COMPLETE, UE CONTEXT RELEASE, PAGING, and LOCATION REPORT.

[0172] S902, AMF receives the first dedicated information sent by gNB.

[0173] S903, AMF sends a propagation delay compensation value request to LMF.

[0174] After receiving the first dedicated message from the gNB, the AMF sends a propagation delay compensation value request to the LMF via a predefined propagation delay compensation value request message or a location service request.

[0175] S904, LMF receives the propagation delay compensation value request sent by AMF.

[0176] S905 and LMF send propagation delay compensation values ​​back to AMF.

[0177] After receiving a propagation delay compensation value request from the AMF, the LMF sends a propagation delay compensation value feedback to the AMF through a predefined propagation delay compensation value feedback message or a location service response.

[0178] S906, AMF receives the propagation delay compensation value feedback sent by LMF.

[0179] S907, AMF sends a second dedicated message to gNB, which includes the propagation delay compensation value measured by RTT.

[0180] After receiving the propagation delay compensation value feedback from the LMF, the AMF sends the propagation delay compensation value measured by the RTT to the gNB via the second dedicated information.

[0181] Specifically, the second special information includes any one of the following: handover command information, path switch request acknowledgment information, UE message release command information, downlink RAN ​​status tranche information, paging information, and location reporting control information.

[0182] S908 and gNB receive the second dedicated information sent by AMF.

[0183] In the fifth exemplary embodiment, a scheme is proposed whereby, during a UE's handover process (i.e., when the UE is about to handover from a source gNB to a target gNB), the target gNB forwards resources configured for RTT measurement from the source gNB to achieve faster and more accurate synchronization of reference clock information with the UE. Specifically, Figure 10 A flowchart illustrating another information transmission method provided in one embodiment is shown. Figure 10 As shown, the method includes the following steps.

[0184] S1001, the source gNB sends a handover request to the AMF.

[0185] S1002, AMF receiving source gNB transmission switching requirements.

[0186] S1003, AMF sends a handover request message to the target gNB.

[0187] S1004, The target gNB receives the handover request message sent by the AMF.

[0188] S1005, the target gNB sends third dedicated information to the AMF, which includes configuration information for RTT measurement.

[0189] After receiving the handover request message sent by the AMF, the target gNB sends third special information to the AMF, including configuration information of the RTT measurement configured by the target gNB (at least one of PRS, CSI-RS, and SRS).

[0190] In one embodiment, the third special information may be special signaling or handover request confirmation signaling. The special signaling includes at least one of the following: handover request confirmation, path switch request, UE context release complete, context release, paging, and location report.

[0191] S1006, AMF receives the third dedicated information sent by the target gNB.

[0192] S1007, AMF sends third-party private information to the source gNB.

[0193] After receiving the third dedicated information from the target gNB, the AMF forwards the third dedicated information to the source gNB via dedicated signaling or handover request confirmation signaling. This dedicated signaling includes at least one of the following: handover command, path switch request confirmation, UE message release command, downlink RAN ​​status change, paging, or location reporting control.

[0194] S1008, the source gNB receives the third special information sent by the AMF.

[0195] S1009, the source gNB sends handover information to the UE, which includes configuration information for RTT measurement.

[0196] After receiving the third dedicated information sent by the AMF, the source gNB sends handover information, including configuration information for RTT measurement, to the UE.

[0197] S1010, The UE receives the handover information sent by the source gNB.

[0198] When the UE receives the handover information sent by the source gNB and the handover is completed, the UE initiates RTT measurement.

[0199] In the sixth exemplary embodiment, a situation is proposed where, during a UE's handover process (i.e., the UE is about to handover from a source gNB to a target gNB), the source gNB continues to send data packets to the UE after initiating a handover request. If the sending is successful, it does not need to enter or maintain the ST state. However, the target gNB has already learned the ST state information, which may lead to a situation where the target gNB and the UE have inconsistent states.

[0200] During handover, in order to ensure consistency of ST state between the target gNB and the UE, the UE indicates to the target gNB that a data packet has been successfully sent after successfully receiving the data packet from the source gNB.

[0201] Specifically, ST monitoring information includes at least one of the following: the last data packet of the source gNB was successfully sent during the handover process, indicating that the source gNB has exited the ST state, indicating that the target gNB has exited the ST state, or indicating that the target gNB uses low reliability to send data packets.

[0202] The handover can be divided into handover between gNBs and handover between gNB-DUs.

[0203] For switching between gNBs Figure 11 A schematic diagram of a switching process provided in one embodiment is shown. Figure 12 A flowchart illustrating another information transmission method provided in one embodiment is shown. Figure 12 As shown, the method includes the following steps.

[0204] S1201, The target gNB sends a fourth special message to the source gNB. The fourth special message is used to request the time-to-live (ST) monitoring information.

[0205] In downlink services, the gNB executes the ST monitoring mechanism. After the target gNB obtains ST monitoring information from the source gNB, if the ST state of the source gNB changes, the UE instructs the target gNB to exit the ST state through the ST monitoring information. The ST monitoring information includes at least one of the following: Message 1 of the UE's random access information, Message 3 of the UE's random access information, and handover completion information.

[0206] Alternatively, if the ST state of the source gNB changes during the handover process, the target gNB requests the time-to-live (ST) monitoring information from the source gNB via the fourth dedicated information during or after the handover.

[0207] S1202, The source gNB receives the fourth special information sent by the target gNB.

[0208] S1203, the source gNB sends the fifth dedicated information to the target gNB, which includes ST monitoring information.

[0209] The source gNB sends ST monitoring information to the target gNB via the fifth dedicated information.

[0210] In one embodiment, the fourth and fifth dedicated information are predefined UE-level signaling.

[0211] S1204. The target gNB receives the fifth special information sent by the source gNB.

[0212] For switching between gNB-DU and gNB-DU Figure 13 A schematic diagram of another switching process provided in one embodiment is shown. Figure 14 A flowchart illustrating yet another information transmission method provided in one embodiment is shown. Figure 14 As shown, the method includes the following steps.

[0213] S1401, The target gNB-DU sends a fourth special message to the source gNB-DU. The fourth special message is used to request the time-to-live (ST) monitoring information.

[0214] In downlink services, the gNB executes the ST monitoring mechanism. After the target gNB-DU obtains ST monitoring information from the source gNB-DU, if the ST state of the source gNB-DU changes, the UE instructs the target gNB-DU to exit the ST state through the ST monitoring information. The ST monitoring information includes at least one of the following: UE random access information message 1, UE random access information message 3, and RRC reconfiguration completion information.

[0215] Alternatively, if the ST state of the source gNB-DU changes during the handover process, the target gNB-DU will request the time-to-live (ST) monitoring information from the source gNB-DU via the fourth dedicated information during or after the handover.

[0216] S1402, The source gNB-DU receives the fourth special information sent by the target gNB-DU.

[0217] S1403, the source gNB-DU sends the fifth special information to the target gNB-DU, which includes ST monitoring information.

[0218] The source gNB-DU sends ST monitoring information to the target gNB-DU via the fifth dedicated information.

[0219] In one embodiment, the fourth and fifth dedicated information are predefined UE-level signaling.

[0220] S1404. The target gNB-DU receives the fifth special information sent by the source gNB-DU.

[0221] Figure 15 A schematic diagram of an information receiving device according to an embodiment is shown. This device can be configured in a first communication node, such as... Figure 15 As shown, the device includes a receiving module 10 and a measuring module 11.

[0222] The receiving module 10 is configured to receive first information sent by the second communication node, the first information being used to instruct the first communication node to initiate a propagation delay measurement;

[0223] Measurement module 11 is configured to measure the propagation delay based on the first information.

[0224] The information receiving device provided in this embodiment is for implementing the information receiving method of the above embodiment. The implementation principle and technical effect of the information receiving device provided in this embodiment are similar to those of the above embodiment, and will not be repeated here.

[0225] In one embodiment, the first information includes at least one of the following:

[0226] Configuration information for Round-Trip Time (RTT) measurement;

[0227] Instructions to initiate propagation delay measurement;

[0228] Instructions for providing propagation delay compensation;

[0229] Reference clock information.

[0230] In one embodiment, the first information is a Radio Resource Control (RRC) message, and the configuration information for RTT measurement includes at least one of the following: Positioning Reference Signal (PRS), Channel State Information Reference Signal (CSI-RS), and Sounding Reference Signal (SRS).

[0231] In one embodiment, the indication information for initiating a propagation delay measurement includes at least one of the following:

[0232] Indication to trigger the start of propagation delay measurement;

[0233] Indication to trigger the reporting of propagation delay measurements;

[0234] SRS identifier ID indicates;

[0235] PRS identification;

[0236] CSI-RS identification indication;

[0237] The period for measuring propagation delay;

[0238] The time difference between receiving and transmitting Rx-Tx at the second communication node;

[0239] Clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0240] In one embodiment, reference Figure 15 , Figure 16 A schematic diagram of another information receiving device provided in one embodiment is shown. The indication information for initiating propagation delay measurement includes an indication to trigger the start of propagation delay measurement. The device also includes a transmitting module 12.

[0241] The sending module is configured to send the Rx-Tx time difference of the first communication node to the second communication node.

[0242] In one embodiment, the indication information for initiating the propagation delay measurement includes the period of the propagation delay measurement;

[0243] The sending module is also configured to periodically send the Rx-Tx time difference of the first communication node to the second communication node.

[0244] In one embodiment, the indication information for propagation delay compensation is either the indication information for the first communication node to perform propagation delay compensation, or the indication information for the second communication node to perform propagation delay pre-compensation.

[0245] In one embodiment, the reference clock information is unicast by the second communication node, or the reference clock information is broadcast by the second communication node.

[0246] In one embodiment, the indication information for performing propagation delay compensation is the indication information for the first communication node to perform propagation delay compensation;

[0247] The receiving module is further configured to receive at least one of the following: the Rx-Tx time difference of the second communication node and the clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0248] In one embodiment, the indication information for performing propagation delay compensation is the indication information for the second communication node to perform propagation delay pre-compensation;

[0249] The transmitting module is further configured to transmit to the second communication node at least one of the Rx-Tx time difference of the first communication node and the clock error group ID associated with the Rx-Tx time difference of the first communication node.

[0250] In one embodiment, the receiving module is further configured to receive second information sent by the second communication node, the second information including at least one of downlink information transmission and broadcast system information block 9SI B9.

[0251] In one embodiment, the second information includes at least one of the following:

[0252] Enable indication information; disable indication information; indication information for using timing advance TA for propagation delay compensation; indication information for using RTT for propagation delay compensation; indication information for the reference clock not requiring propagation delay compensation; indication information for the second communication node to perform propagation delay pre-compensation.

[0253] In one embodiment, the sending module is further configured to send time-to-live (ST) monitoring information to a third communication node, indicating that the first communication node is about to switch from the second communication node to the third communication node, and the ST monitoring information is used to instruct the third communication node to exit the ST state.

[0254] In one embodiment, the ST monitoring information includes at least one of the following: message 1 of random access information, message 3 of random access information, handover completion information, and RRC reconfiguration completion information.

[0255] Figure 17 A schematic diagram of an information transmission device according to an embodiment is shown. This device can be configured in a second communication node, such as... Figure 17 As shown, the device includes: a transmitting module 20.

[0256] The sending module 20 is configured to send first information to the first communication node, the first information being used to instruct the first communication node to initiate a propagation delay measurement.

[0257] The information sending device provided in this embodiment is for implementing the information sending method of the above embodiment. The implementation principle and technical effect of the information sending device provided in this embodiment are similar to those of the above embodiment, and will not be repeated here.

[0258] In one embodiment, the first information includes at least one of the following:

[0259] Configuration information for Round-Trip Time (RTT) measurement;

[0260] Instructions to initiate propagation delay measurement;

[0261] Instructions for providing propagation delay compensation;

[0262] Reference clock information.

[0263] In one embodiment, the first information is a Radio Resource Control (RRC) message, and the configuration information for RTT measurement includes at least one of the following: Positioning Reference Signal (PRS), Channel State Information Reference Signal (CSI-RS), and Sounding Reference Signal (SRS).

[0264] In one embodiment, the indication information for initiating a propagation delay measurement includes at least one of the following:

[0265] Indication to trigger the start of propagation delay measurement;

[0266] Indication to trigger the reporting of propagation delay measurements;

[0267] SRS identifier ID indicates;

[0268] PRS identification;

[0269] CSI-RS identification indication;

[0270] The period for measuring propagation delay;

[0271] The time difference between receiving and transmitting Rx-Tx at the second communication node;

[0272] Clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0273] In one embodiment, reference Figure 17 , Figure 18 A schematic diagram of another information transmission device provided in one embodiment is shown. The indication information for initiating propagation delay measurement includes an indication to trigger the start of propagation delay measurement. The device also includes a receiving module 21.

[0274] The receiving module 21 is configured to receive the Rx-Tx time difference of the first communication node sent by the first communication node.

[0275] In one embodiment, the indication information for initiating the propagation delay measurement includes the period of the propagation delay measurement;

[0276] The receiving module 21 is also configured to periodically receive the Rx-Tx time difference of the first communication node sent by the first communication node.

[0277] In one embodiment, the indication information for propagation delay compensation is either the indication information for the first communication node to perform propagation delay compensation, or the indication information for the second communication node to perform propagation delay pre-compensation.

[0278] In one embodiment, the reference clock information is unicast by the second communication node, or the reference clock information is broadcast by the second communication node.

[0279] In one embodiment, the indication information for performing propagation delay compensation is the indication information for the first communication node to perform propagation delay compensation;

[0280] The transmitting module 20 is further configured to transmit to the first communication node at least one of the Rx-Tx time difference of the second communication node and the clock error group ID associated with the Rx-Tx time difference of the second communication node.

[0281] In one embodiment, the indication information for performing propagation delay compensation is the indication information for the second communication node to perform propagation delay pre-compensation;

[0282] The receiving module 21 is further configured to receive at least one of the following: the Rx-Tx time difference of the first communication node and the clock error group ID associated with the Rx-Tx time difference of the first communication node.

[0283] In one embodiment, the sending module 20 is further configured to perform at least one of the following steps: broadcasting second information, the second information being system information block 9SI B9; and sending the second information to the first communication node.

[0284] In one embodiment, the second information includes at least one of the following:

[0285] Enable indication information; disable indication information; indication information for using timing advance TA for propagation delay compensation; indication information for using RTT for propagation delay compensation; indication information for the reference clock not requiring propagation delay compensation; indication information for the second communication node to perform propagation delay pre-compensation.

[0286] In one embodiment, the sending module 20 is further configured to send first dedicated information to the fourth communication node, the first dedicated information being used to request a propagation delay compensation value for RTT measurement;

[0287] The receiving module 21 is also configured to receive second dedicated information sent by the fourth communication node, the second dedicated information including the propagation delay compensation value of the RTT measurement.

[0288] In one embodiment, the first dedicated information includes any one of the following: handover request confirmation information, path handover request information, message release completion information, context release information, paging information, and location report information;

[0289] The second special information includes any one of the following: handover command information, path handover request confirmation information, message release command information, downlink state change information, paging information, and location report control information.

[0290] In one embodiment, the receiving module 21 is further configured to receive third dedicated information sent by the third communication node, wherein the first communication node is about to switch from the second communication node to the third communication node, and the third dedicated information includes configuration information for RTT measurement.

[0291] The sending module 20 is also configured to send switching information to the first communication node, the switching information including configuration information for RTT measurement.

[0292] In one embodiment, the receiving module 21 is further configured to receive fourth dedicated information sent by the third communication node, wherein the first communication node is about to switch from the second communication node to the third communication node, and the fourth dedicated information is used to request time-to-live (ST) monitoring information.

[0293] The sending module 20 is also configured to send fifth dedicated information to the third communication node, the fifth dedicated information including ST monitoring information.

[0294] Figure 19 A schematic diagram of another information transmission device provided in one embodiment is shown. This device can be configured in a third communication node, such as... Figure 19 As shown, the device includes: a transmitting module 30.

[0295] The sending module 30 is configured to send third information to the second communication node. The third information is dedicated information for requesting that the first communication node will switch from the second communication node to the third communication node.

[0296] The information sending device provided in this embodiment is for implementing the information sending method of the above embodiment. The implementation principle and technical effect of the information sending device provided in this embodiment are similar to those of the above embodiment, and will not be repeated here.

[0297] In one embodiment, the third information is third dedicated information, which includes configuration information for RTT measurement.

[0298] In one embodiment, reference Figure 19 , Figure 20 A schematic diagram of another information transmission device provided in one embodiment is shown, wherein the third information is fourth dedicated information, which is used to request time-to-live (ST) monitoring information; the device also includes: a receiving module 31;

[0299] The receiving module 31 is configured to receive the fifth dedicated information sent by the second communication node, which includes ST monitoring information.

[0300] This application also provides a communication node, including a processor, which is configured to implement the method provided in any embodiment of this application when executing a computer program. Specifically, the communication node can be an access network device or a terminal device provided in any embodiment of this application, and this application does not impose specific limitations on it.

[0301] For example, the following embodiments provide a schematic diagram of a communication node as a base station and a UE.

[0302] Figure 21 A schematic diagram of a base station structure provided in one embodiment is shown, such as... Figure 21 As shown, the base station includes a processor 60, a memory 61, and a communication interface 62; the number of processors 60 in the base station can be one or more. Figure 21 Taking a processor 60 as an example; the processor 60, memory 61, and communication interface 62 in the base station can be connected via a bus or other means. Figure 21Taking the bus connection as an example, a bus can refer to one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus that uses any of the various bus architectures.

[0303] The memory 61, as a computer-readable storage medium, can be configured to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the methods in the embodiments of this application. The processor 60 executes at least one functional application and data processing of the base station by running the software programs, instructions, and modules stored in the memory 61, thereby implementing the methods described above.

[0304] The memory 61 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal. Furthermore, the memory 61 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 61 may include memory remotely located relative to the processor 60, and this remote memory may be connected to a base station via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, networks, mobile communication networks, and combinations thereof.

[0305] Communication interface 62 can be configured to receive and send data.

[0306] Figure 22 A schematic diagram of a UE provided in one embodiment is shown. The UE can be implemented in various forms. The UE in this application can include, but is not limited to, mobile terminal devices such as mobile phones, smartphones, laptops, digital broadcast receivers, personal digital assistants (PDAs), tablet computers (PADs), portable multimedia players (PMPs), navigation devices, in-vehicle terminal devices, in-vehicle display terminals, in-vehicle electronic rearview mirrors, etc., as well as fixed terminal devices such as digital television (TV), desktop computers, etc.

[0307] like Figure 22 As shown, UE 50 may include a wireless communication unit 51, an audio / video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, and a power supply unit 59, etc. Figure 22The UE shown includes a variety of components; however, it should be understood that it is not required to implement all of the components shown. More or fewer components may be implemented alternatively.

[0308] In this embodiment, the wireless communication unit 51 allows the UE 50 to communicate wirelessly with a base station or network. The A / V input unit 52 is configured to receive audio or video signals. The user input unit 53 can generate key input data to control various operations of the UE 50 based on user-input commands. The sensing unit 54 detects the current state of the UE 50, the position of the UE 50, the presence or absence of user touch input to the UE 50, the orientation of the UE 50, the acceleration or deceleration of the UE 50, and its direction, etc., and generates commands or signals for controlling the operation of the UE 50. The interface unit 57 serves as an interface through which at least one external device can connect to the UE 50. The output unit 55 is configured to provide output signals in a visual, audio, and / or tactile manner. The memory 56 can store software programs, etc., that perform processing and control operations executed by the processor 58, or can temporarily store data that has been output or will be output. The memory 56 can include at least one type of storage medium. Moreover, the UE 50 can cooperate with a network storage device that performs the storage function of the memory 56 via a network connection. Processor 58 typically controls the overall operation of UE 50. Power supply unit 59, under the control of processor 58, receives external or internal power and provides the appropriate power required to operate various components and assemblies.

[0309] The processor 58 executes at least one functional application and data processing by running a program stored in the memory 56, such as implementing the method provided in the embodiments of this application.

[0310] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods provided in any embodiment of this application.

[0311] The computer storage medium in this application embodiment can be any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. Computer-readable storage media include (a non-exhaustive list): electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0312] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, the data signals carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which can send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0313] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, radio frequency (RF), or any suitable combination thereof.

[0314] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination of programming languages, including object-oriented programming languages ​​(such as Java, Smallport, C++, Ruby, and Go) and conventional procedural programming languages ​​(such as the "C" language or similar programming languages). The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network (including a Local Area Network, LAN, or Wide Area Network, WAN), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0315] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0316] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0317] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0318] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored in memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Multifunction Discs, DVDs, or CDs), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

Claims

1. A method for receiving information, characterized in that: Applied to a first communication node, comprising: receiving first information sent by a second communication node, where the first information is used to instruct the first communication node to initiate propagation delay measurement; The propagation delay is measured according to the first information.

2. The method according to claim 1, characterized in that The first information includes at least one of the following information: Configuration information for round-trip time (RTT) measurement; Instruction information for initiating propagation delay measurement; Instruction information for performing propagation delay compensation; Reference clock information.

3. The method according to claim 2, characterized in that The first information is a radio resource control RRC message, and the configuration information of the RTT measurement includes: at least one of a positioning reference signal PRS, a channel state information reference signal CSI-RS, and a sounding reference signal SRS.

4. The method according to claim 2, characterized in that: The indication information for initiating propagation delay measurement includes at least one of the following information: triggering an indication to start a propagation delay measurement; An indication for triggering reporting of a propagation delay measurement value; SRS identification ID indication; PRS logo indication; CSI-RS identification indication; The period of propagation delay measurement; The receive-send Rx-Tx time difference of the second communication node; A clock error group ID associated with the Rx-Tx time difference of the second communication node.

5. The method according to claim 2, characterized in that: The indication information for performing propagation delay compensation is indication information for the first communication node to perform propagation delay compensation, or indication information for the second communication node to perform propagation delay pre-compensation.

6. The method according to claim 5, characterized in that The instruction information for performing propagation delay compensation is instruction information for the first communication node to perform propagation delay compensation; the method further includes: Receive at least one of the Rx-Tx time difference of the second communication node and the clock error group ID associated with the Rx-Tx time difference of the second communication node sent by the second communication node.

7. The method according to claim 5, characterized in that The instruction information for performing propagation delay compensation is instruction information for the second communication node to perform propagation delay pre-compensation; the method further includes: At least one of the Rx-Tx time difference of the first communication node and a clock error group ID associated with the Rx-Tx time difference of the first communication node is sent to the second communication node.

8. The method according to claim 1, characterized in that: Also includes: Receive second information sent by the second communication node, where the second information includes at least one of downlink information transmission and broadcast system information block 9 SIB9.

9. The method according to claim 8, characterized in that The second information includes at least one of the following information: Enable indication information; disable indication information; indication information for using timing advance TA for propagation delay compensation; indication information for using RTT for propagation delay compensation; indication information that the reference clock does not need to perform propagation delay compensation; indication information for the second communication node to perform propagation delay pre-compensation.

10. The method according to claim 1, characterized in that Also includes: Sending survival time ST monitoring information to a third communication node, the first communication node is about to switch from the second communication node to the third communication node, the ST monitoring information is used to instruct the third communication node to exit the ST state.

11. A method for sending information, characterized in that: Applied to a second communication node, comprising: First information is sent to a first communication node, where the first information is used to instruct the first communication node to initiate a propagation delay measurement.

12. The method according to claim 11, characterized in that The first information includes at least one of the following information: Configuration information for round-trip time (RTT) measurement; Instruction information for initiating propagation delay measurement; Instruction information for performing propagation delay compensation; Reference clock information.

13. The method according to claim 12, characterized in that The first information is a radio resource control RRC message, and the configuration information of the RTT measurement includes: at least one of a positioning reference signal PRS, a channel state information reference signal CSI-RS, and a sounding reference signal SRS.

14. The method according to claim 12, characterized in that The indication information for initiating propagation delay measurement includes at least one of the following information: triggering an indication to start a propagation delay measurement; An indication for triggering reporting of a propagation delay measurement value; SRS identification ID indication; PRS logo indication; CSI-RS identification indication; The period of propagation delay measurement; The receive-send Rx-Tx time difference of the second communication node; A clock error group ID associated with the Rx-Tx time difference of the second communication node.

15. The method according to claim 12, characterized in that The indication information for performing propagation delay compensation is indication information for the first communication node to perform propagation delay compensation, or indication information for the second communication node to perform propagation delay pre-compensation.

16. The method according to claim 15, characterized in that The instruction information for performing propagation delay compensation is instruction information for the first communication node to perform propagation delay compensation; the method further includes: At least one of an Rx-Tx time difference of a second communication node and a clock error group ID associated with the Rx-Tx time difference of the second communication node is sent to the first communication node.

17. The method according to claim 15, characterized in that The instruction information for performing propagation delay compensation is instruction information for the second communication node to perform propagation delay pre-compensation; the method further includes: Receive at least one of the Rx-Tx time difference of the first communication node and the clock error group ID associated with the Rx-Tx time difference of the first communication node sent by the first communication node.

18. The method according to claim 11, characterized in that Also includes at least one of the following steps: Broadcasting second information, where the second information is system information block 9 SIB9; Sending second information to the first communication node.

19. The method according to claim 18, characterized in that The second information includes at least one of the following information: Enable indication information; disable indication information; indication information for using timing advance TA for propagation delay compensation; indication information for using RTT for propagation delay compensation; indication information that the reference clock does not need to perform propagation delay compensation; indication information for the second communication node to perform propagation delay pre-compensation.

20. A communication node, characterized in that: include: processor; The processor is used to implement the information receiving method according to any one of claims 1 to 10 when executing the computer program; Or implement the information sending method as described in any one of claims 11-19.

21. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor of the first communication node, it implements the information receiving method as described in any one of claims 1-10; or when the computer program is executed by the processor of the second communication node, it implements the information sending method as described in any one of claims 11-19.

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