A communication method, device, equipment and storage medium

Abstract

The present application proposes a communication method, device, equipment and storage medium. The method includes: receiving a reverse transmission start message sent by a second communication node, the reverse transmission start message carrying a new reverse transmission address; and starting a new reverse transmission process according to the new reverse transmission address in the reverse transmission start message.

Description

Technical Field

[0001] The present application relates to communications, and in particular to a communications method, apparatus, device and storage medium. Background Art

[0002] In order to improve user experience, Evolved Universal Terrestrial Radio Access Network-New Radio Dual Connectivity (E-UTRAN-NR Dual Connectivity, EN-DC) or Multi-RAT Dual Connectivity (MR-DC) dual connectivity networking is introduced in the communication system, using the dual connectivity of Evolved Universal Terrestrial Radio Access Network (E-UTRAN) and New Radio (NR) wireless access technology. User Equipment (UE) with MR-DC or EN-DC capabilities accesses the network for dual connectivity services to increase the peak traffic of a single user.

[0003] In the EN-DC or MR-DC scenario, when the first communication node is performing data reverse transmission, if a cross scenario occurs, how to notify the first communication node to change the data reverse transmission to avoid re-establishment failure or data interruption during re-establishment in a non-steady-state process is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a communication method, apparatus, device and storage medium, which improve the success rate of the reverse transmission process and ensure the continuity of data.

[0005] The embodiment of the present application provides a communication method, which is applied to a first communication node, including:

[0006] Receiving a reverse transmission start message sent by the second communication node, wherein the reverse transmission start message carries a new reverse transmission address;

[0007] A new reverse transmission process is started according to the new reverse transmission address in the reverse transmission start message.

[0008] The embodiment of the present application provides a communication method, which is applied to a second communication node, including:

[0009] A reverse transmission start message is sent to the first communication node; the reverse transmission start message carries a new reverse transmission address and is used to trigger the first communication node to start a new reverse transmission process.

[0010] The embodiment of the present application provides a communication device, applied to a first communication node, including:

[0011] A receiver, configured to receive a reverse transmission start message sent by the second communication node, wherein the reverse transmission start message carries a new reverse transmission address;

[0012] The starting module is configured to start a new reverse transmission process according to the new reverse transmission address in the reverse transmission starting message.

[0013] An embodiment of the present application provides a communication device, applied to a second communication node, including:

[0014] The transmitter is configured to send a reverse transmission start message to the first communication node; the reverse transmission start message carries a new reverse transmission address and is used to trigger the first communication node to start a new reverse transmission process.

[0015] An embodiment of the present application provides a device, including: a communication module, a memory, and one or more processors;

[0016] The communication module is configured to perform communication interaction between the first communication node and the second communication node;

[0017] The memory is configured to store one or more programs;

[0018] When the one or more programs are executed by the one or more processors, the one or more processors implement the method described in any of the above embodiments.

[0019] An embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any of the above embodiments is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a flow chart of an inter-station with SN switching scenario provided by an embodiment of the present application;

[0021] Figure 2 This is a flowchart of another inter-station with SN switching scenario provided by an embodiment of the present application;

[0022] Figure 3 This is a flowchart of re-establishment of a UE in a steady state after adding an SN, provided in an embodiment of the present application;

[0023] Figure 4 This is another flowchart of re-establishment of a UE in a steady state after adding an SN provided in an embodiment of the present application;

[0024] Figure 5 is a flow chart of a communication method provided by an embodiment of the present application;

[0025] Figure 6 is a flow chart of another communication method provided by an embodiment of the present application;

[0026] Figure 7 This is a flowchart of re-establishment during an inter-station band SN switching process provided by an embodiment of the present application;

[0027] Figure 8 This is another flow chart of re-establishment during inter-station band SN switching provided by an embodiment of the present application;

[0028] Fig. 9 is a structural block diagram of a communication device provided in an embodiment of the present application;

[0029] Fig.10 is a structural block diagram of another communication device provided in an embodiment of the present application;

[0030] Fig.11 It is a structural schematic diagram of a device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] In the MR-DC networking, for a UE to which an SN has been added, data reverse transmission is required when the PDCP entity changes during the switching process or SN deletion process. In the EN-DC scenario, the MN sends a secondary node release request (SgNB ReleaseRequest) to the SN, and carries the reverse transmission address in the secondary node release request. The SN stops transmitting downlink data to the UE and starts data reverse transmission. In the 5GC scenario of MR-DC, the MN sends a secondary node release request (SN Release Request) to the SN to notify the SN to stop transmitting downlink data to the UE, and at the same time sends an address indication message (Xn-U Address Indication) to the SN, and carries the reverse transmission address information in the address indication message. If the UE is re-established in the subsequent steps of the process, the MN decides whether to preempt the current process based on the physical cell ID carried in the re-establishment request.

[0033] In the switching process, when the UE re-establishes, the air interface switching fails, but the network side SN does not recognize the process failure, and the SN side still continues the switching process. If the target Packet Data Convergence Protocol (PDCP) entity of the re-establishment changes, the SN needs to be notified of the new data return address again. In the existing standard protocol, there is no method for notifying the SN of the change of data return for the cross process, which leads to the failure of re-establishment or data interruption when re-establishment occurs in the non-steady state process.

[0034] In the current standard protocol, it is defined that the MN sends an SgNB Release Confirm or SgNB Release Request message to the SN in the EN-DC scenario, and that the MN sends an Xn-U AddressIndication message to the SN in the MR-DC scenario with 5GC to carry the return address. The protocol does not define the scenario in which a re-establishment occurs after sending the above message carrying the return address to the SN but before sending the UE Context Release to the SN, and the current process needs to be interrupted to process the re-establishment immediately, and a new return address needs to be sent to the SN again during the re-establishment process. The UE that adds the SN needs the MN to send an SGNB RELEASE REQUEST message to the SN during the switching process, for example: the scenario in which the SN changes during intra-site SN switching and the scenario in which the SN changes between sites. This document takes the scenario in which the SN changes during inter-site SN switching as an example.

[0035] In one implementation, Figure 1 1 is a flow chart of an inter-station with SN switching scenario provided by an embodiment of the present application. Figure 1 As shown, this embodiment is a flow chart of an inter-station with SN switching scenario in an EN-DC scenario. Figure 1 As shown, this embodiment includes: S101-S111.

[0036] S101. Send a measurement report.

[0037] S102: Send a switching request.

[0038] S103. Send an SgNB addition request.

[0039] S104. Send an SgNB add request response message.

[0040] S105: Receive a switching request confirmation message.

[0041] S106. Send an SgNB release request.

[0042] S107. Receive SgNB release request confirmation message.

[0043] S108. Receive an RRC connection reconfiguration message.

[0044] S109. Send an RRC connection reconfiguration completion message.

[0045] S110: Receive a UE context release request.

[0046] S111. Send a UE context release message.

[0047] In the EN-DC scenario, due to the change of SN, the source MN sends an SgNB release request to the source SN to notify the SN side to stop sending downlink data, and carries new reverse transmission address information in the SgNB release request to start data reverse transmission from the source SN to the target SN.

[0048] In one implementation, Figure 2 FIG. 1 is a flowchart of another inter-station with SN switching scenario provided by an embodiment of the present application. Figure 2 As shown in FIG. 1 , this embodiment is a flow chart of an inter-station SN switching scenario in an MR-DC scenario with 5GC. Figure 2 As shown, this embodiment includes: S201-S212.

[0049] S201. Send a measurement report.

[0050] S202: Send a switching request.

[0051] S203. Send an SgNB addition request.

[0052] S204. Send an SgNB add request response message.

[0053] S205: Receive a switching request confirmation message.

[0054] S206. Send an SgNB release request.

[0055] S207. Receive SgNB release request confirmation message.

[0056] S208: Send an address indication message.

[0057] S209. Receive an RRC connection reconfiguration message.

[0058] S210. Send an RRC connection reconfiguration completion message.

[0059] S211. Receive a UE context release request.

[0060] S212: Send a UE context release message.

[0061] In the MR-DC scenario with 5GC, due to the change of SN, the source MN sends an SgNB release request to the source SN to notify the SN side to stop sending downlink data, and sends an address indication message, and carries new reverse transmission address information in the address indication message to start data reverse transmission from the source SN to the target SN.

[0062] In one implementation, Figure 3 FIG. 1 is a flowchart of a UE re-establishment in a steady state after adding a SN provided in an embodiment of the present application. Figure 3 As shown in FIG. 1 , this embodiment is a flowchart of reestablishing the UE in a steady state after adding the SN in the EN-DC scenario. Figure 3 As shown, this embodiment includes: S301-S308.

[0063] S301. Send an RRC connection re-establishment request.

[0064] S302: Receive an RRC connection re-establishment message.

[0065] S303: Send an RRC connection re-establishment completion message.

[0066] S304. Send an SgNB release request.

[0067] S305. Receive SgNB release request confirmation message.

[0068] S306. Receive an RRC connection reconfiguration message.

[0069] S307. Send an RRC connection reconfiguration completion message.

[0070] S308. Send a UE context release message.

[0071] In the embodiment, after the SN is added, the UE re-establishes the process, deletes the SN during the re-establishment process, and transmits data back from the SN side to the MN side during the process.

[0072] like Figure 3 As shown, in the EN-DC scenario, the MN sends an SgNB release request to the SN, and the SgNB release request carries the reverse address information.

[0073] In one implementation, Figure 4 FIG. 1 is another flowchart of reestablishment of a UE in a steady state after adding a SN provided in an embodiment of the present application. Figure 4 As shown in FIG. 1 , this embodiment is a flowchart of reestablishing a UE in a steady state after adding a SN in a MR-DC scenario with 5GC. Figure 4 As shown, this embodiment includes: S401-S409.

[0074] S401. Send an RRC connection re-establishment request.

[0075] S402: Receive an RRC connection re-establishment message.

[0076] S403: Send an RRC connection re-establishment completion message.

[0077] S404. Send an SgNB release request.

[0078] S405. Receive SgNB release request confirmation message.

[0079] S406: Send an address indication message.

[0080] S407. Receive an RRC connection reconfiguration message.

[0081] S408. Send an RRC connection reconfiguration completion message.

[0082] S409: Send a UE context release message.

[0083] In an embodiment, in the MR-DC with 5GC scenario, the MN sends an address indication message to the SN, and the address indication message carries the return address information.

[0084] In the SN change process of UE-to-SN inter-station handover, when SN replies to MN with SN Release Acknowledge, data back-transmission from source SN to target SN is initiated. After that, UE is re-established, and the physical cell ID of the handover source side is re-established to source MN. MN needs to preempt the current handover process and respond to the re-establishment immediately. The protocol stipulates that the resources on the SN side must be deleted during the re-establishment process. Therefore, data back-transmission from source SN to source MN must be completed during the re-establishment process. However, how to notify SN to change the back-transmission address under this cross-process is an urgent problem to be solved.

[0085] In view of this, the present application proposes a communication method to improve the success rate of the reverse transmission process and ensure the continuity of data.

[0086] Figure 5 1 is a flow chart of a communication method provided in an embodiment of the present application. This embodiment is applied to a first communication node. Exemplarily, the first communication node may be a secondary node (eg, SN1). Figure 5 As shown, this embodiment includes S510-S520.

[0087] S510: Receive a reverse transmission start message sent by the second communication node, where the reverse transmission start message carries a new reverse transmission address.

[0088] S520: Start a new reverse transmission process according to the new reverse transmission address in the reverse transmission start message.

[0089] In an embodiment, a new reverse transmission address is carried in the reverse transmission initiation message. After the first communication node receives the reverse transmission initiation message sent by the second communication node, the first communication node initiates a new reverse transmission process according to the new reverse transmission address in the reverse transmission initiation message to improve the success rate of the reverse transmission process and ensure data continuity.

[0090] In one embodiment, receiving a reverse transmission start message sent by a second communication node includes: receiving a reverse transmission start message sent by a second communication node when a destination reverse transmission address switches during data reverse transmission. In the embodiment, the destination reverse transmission address refers to an address that switches from the node to another node during data reverse transmission.

[0091] In one embodiment, the situation where the destination reverse transmission address switches includes one of the following: the situation where the first communication node executes a switching process, and the situation where the first communication node executes a deletion process.

[0092] In one embodiment, in the EN-DC scenario, receiving a reverse transmission start message sent by a second communication node includes:

[0093] A first auxiliary node release request sent by the second communication node is received, where the first auxiliary node release request carries a new return address.

[0094] In one embodiment, in the MR-DC scenario, receiving a reverse transmission initiation message sent by the second communication node includes: receiving an address indication message sent by the second communication node, where the address indication message carries a new reverse transmission address.

[0095] In one embodiment, before receiving the address indication message sent by the second communication node, the method further includes: receiving a second auxiliary node release request sent by the second communication node; and feeding back second auxiliary node release request confirmation information to the second communication node.

[0096] In one embodiment, the communication method applied to the first communication node further includes: upon receiving the reverse transmission start message, backing up the first communication node to execute the reverse transmission data in the original reverse transmission process.

[0097] In one embodiment, after backing up the reverse transmission data of the first communication node itself, it also includes: receiving a UE context release message sent by the second communication node; and clearing the reverse transmission data in the original reverse transmission process executed by the first communication node.

[0098] Figure 6 1 is a flow chart of another communication method provided by an embodiment of the present application. This embodiment is applied to a second communication node. Exemplarily, the second communication node may be a master node (eg, MN1). Figure 6 As shown, this embodiment includes S610.

[0099] S610, sending a reverse transmission start message to the first communication node; the reverse transmission start message carries a new reverse transmission address and is used to trigger the first communication node to start a new reverse transmission process.

[0100] In one embodiment, sending a reverse transmission start message to the first communication node includes: sending a reverse transmission start message to the first communication node when a destination reverse transmission address changes during data reverse transmission by the first communication node.

[0101] In one embodiment, in the EN-DC scenario, sending a reverse transmission start message to the first communication node includes:

[0102] A first auxiliary node release request is sent to the first communication node, where the first auxiliary node release request carries a new return address.

[0103] In one embodiment, in the MR-DC scenario, sending a reverse transmission start message to the first communication node includes:

[0104] An address indication message is sent to the first communication node, where the address indication message carries a new return address.

[0105] In one embodiment, the communication method applied to the second communication node further includes: sending a UE context release message to the first communication node.

[0106] In one implementation, the present application proposes a method in which after the MN sends the SgNB Release Request, SgNBRelease Confirm or Xn-U Address Indication to the SN, the current process is preempted and the SN side needs to be notified again to start the reverse transmission to the new reverse transmission address, thereby ensuring the continuity of the data. When the message carrying the reverse transmission address is sent to the SN for the first time to notify the SN to start the data reverse transmission, the SN side needs to back up the data while starting the reverse transmission, and clear the data after receiving the UE context release message (UE CONTEXT RELEASE). If a cross-process occurs during the data reverse transmission process and the target entity of the data reverse transmission needs to be changed, the MN sends a message carrying the reverse transmission address to the SN again. After the SN side receives the message, if it finds that the data is already being reversed, the current data reverse transmission process is stopped and the data is restarted to the new target address. The message for changing the data reverse transmission address can be assisted by the following messages: SgNB Release Request message in the EN-DC scenario; address indication message in the MR-DC scenario with 5GC.

[0107] The data back transmission process in the cross-scenario of EN-DC scenario and MR-DC with 5GC scenario can be illustrated by the following example.

[0108] In one implementation, Figure 7 This is a flow chart of a re-establishment process during an inter-station band SN switching process provided by an embodiment of the present application. Figure 7 As shown in FIG. 1 , this embodiment is a flowchart of reestablishment during SN switching in an EN-DC scenario. For example, the first communication node is a source SN, and the second communication node is a source MN. Figure 7 As shown, this embodiment includes: S701-S717.

[0109] S701. Send a measurement report.

[0110] S702: Send a switching request.

[0111] S703. Send an SgNB addition request.

[0112] S704. Send an SgNB add request response message.

[0113] S705: Receive a switching request confirmation message.

[0114] S706. Send an SgNB release request.

[0115] S707. Receive SgNB release request confirmation message.

[0116] S708. Receive an RRC connection reconfiguration message.

[0117] S709. Send an RRC connection reconfiguration completion message.

[0118] S710: Send a switching cancellation message.

[0119] S711. Receive an RRC connection re-establishment message.

[0120] S712. Send an RRC connection re-establishment completion message.

[0121] S713. Send an SgNB release request (i.e., the first auxiliary node release request in the above embodiment).

[0122] S714. Receive SgNB release request confirmation message.

[0123] S715. Receive an RRC connection reconfiguration message.

[0124] S716. Send an RRC connection reconfiguration completion message.

[0125] S717: Send a UE context release message.

[0126] In an embodiment, in an EN-DC scenario, after the source SN receives the SgNB release request (i.e., S706) in the switching process, the source SN starts data backhaul from the source SN to the target SN according to the data backhaul information in the SgNB release request, and the source SN backs up the backhaul data at this time. When the UE is reestablished, since it carries the physical cell ID of the switching source side, it is necessary to send a switching cancellation message to the target MN to cancel the current switching process and respond quickly to the reestablishment. Since the reestablishment requires the initiation of data backhaul from the source SN to the source MN, in the reestablishment process, the source MN sends an SgNB release request to the source SN again in S713, and carries a new backhaul address in the SgNB release request in S713 to notify the source SN to stop data backhaul to the target SN in the switching process and restart the backhaul to the source MN.

[0127] In one implementation, Figure 8 This is another flow chart of re-establishment during inter-station band SN switching provided by an embodiment of the present application. Figure 8 As shown in FIG. 1 , this embodiment is a flowchart of reestablishment during SN switching in a MR-DC scenario with 5GC. For example, the first communication node is a source SN, and the second communication node is a source MN. Figure 8 As shown, this embodiment includes: S801-S817.

[0128] S801. Send a measurement report.

[0129] S802: Send a switching request.

[0130] S803. Send an SgNB addition request.

[0131] S804. Send an SgNB add request response message.

[0132] S805: Receive a switching request confirmation message.

[0133] S806. Send an SgNB release request.

[0134] S807. Receive SgNB release request confirmation message.

[0135] S808: Send an address indication message.

[0136] S809: Receive an RRC connection reconfiguration message.

[0137] S810. Send an RRC connection reconfiguration completion message.

[0138] S811. Send a switching cancellation message.

[0139] S812: Receive an RRC connection re-establishment message.

[0140] S813. Send an RRC connection re-establishment completion message.

[0141] S814. Send an SgNB release request (i.e., the second auxiliary node release request in the above embodiment).

[0142] S815. Receive SgNB release request confirmation message.

[0143] S816: Send an address indication message (ie, the address indication message carrying a new return address in the above embodiment).

[0144] S817. Receive an RRC connection reconfiguration message.

[0145] S818. Send an RRC connection reconfiguration completion message.

[0146] S819: Send a UE context release message.

[0147] In an embodiment, in an MR-DC scenario with 5GC, after the source SN receives the address indication message in the switching process, the source SN starts data reverse transmission to the target SN. This embodiment is the same as the EN-DC scenario described above, and the source SN backs up the reverse transmission data at this time. When the UE is re-established, the current switching process is also canceled, and the re-establishment is quickly responded to and the data reverse transmission from the source SN to the source MN is restarted. In S816 of the re-establishment process, the source MN sends an address indication message to the source SN again, and carries a new reverse transmission address in the address indication message to notify the sourceSN to stop data reverse transmission to the target SN in the switching process and restart the reverse transmission to the source MN.

[0148] In the embodiment of the present application, in the cross-flow and data back-transmission process, the back-transmission address changes are handled. After the MN sends the SGNB RELEASE REQUEST, SGNB RELEASE CONFIRM or Xn-U Address Indication to the SN, during the data back-transmission process on the SN side, if other processes require the back-transmission address to be changed, the MN notifies the SN again to start a new back-transmission, which involves the backup of the back-transmission data and the processing of the signaling process, specifically: when the first communication node (for example, the source SN in the above embodiment) starts the back-transmission, the data is backed up until the UE context release message is received, and then the data is cleared.

[0149] When the second communication node (for example, the source MN in the above embodiment) sends the SgNB Release Request (the first auxiliary node release request in the above embodiment S713) or Xn-U Address Indication (the address indication message in the above embodiment S816) message carrying the new reverse transmission address to the first communication node again, the first communication node is notified to stop the current data reverse transmission to the third communication node and restart the reverse transmission to the second communication node. In the embodiment, in the EN-DC scenario, the second communication node sends the first auxiliary node release request carrying the new reverse transmission address to the first communication node; in the MR-DC scenario, the second communication node sends the address indication message carrying the new reverse transmission address to the first communication node.

[0150] Fig. 9 is a structural block diagram of a communication device provided in an embodiment of the present application. This embodiment is applied to a first communication node. Fig. 9 As shown, this embodiment includes: a receiver 910 and a starting module 920 .

[0151] The receiver 910 is configured to receive a reverse transmission start message sent by the second communication node, where the reverse transmission start message carries a new reverse transmission address;

[0152] The start module 920 is configured to start a new reverse transmission process according to the new reverse transmission address in the reverse transmission start message.

[0153] The communication device provided in this embodiment is configured to implement Figure 5 The communication method applied to the first communication node in the illustrated embodiment and the communication device provided in this embodiment have similar implementation principles and technical effects, which will not be described in detail here.

[0154] In one embodiment, receiving a reverse transmission start message sent by a second communication node includes:

[0155] During data reverse transmission, when the destination reverse transmission address switches, a reverse transmission start message sent by the second communication node is received.

[0156] In one embodiment, the situation where the destination reverse transmission address switches includes one of the following: the situation where the first communication node executes a switching process, and the situation where the first communication node executes a deletion process.

[0157] In one embodiment, in the EN-DC scenario, receiving a reverse transmission start message sent by a second communication node includes:

[0158] A first auxiliary node release request sent by the second communication node is received, where the first auxiliary node release request carries a new return address.

[0159] In one embodiment, in the MR-DC scenario, receiving a reverse transmission start message sent by a second communication node includes:

[0160] An address indication message sent by the second communication node is received, where the address indication message carries a new return address.

[0161] In one embodiment, before receiving the address indication message sent by the second communication node, the method further includes:

[0162] receiving a second auxiliary node release request sent by a second communication node;

[0163] Feedback the second auxiliary node release request confirmation information to the second communication node.

[0164] In one embodiment, the communication method applied to the first communication node further includes: upon receiving the reverse transmission start message, backing up the first communication node to execute the reverse transmission data in the original reverse transmission process.

[0165] In one embodiment, after backing up the reverse transmission data of the first communication node itself, the method further includes:

[0166] Receiving a user terminal UE context release message sent by the second communication node;

[0167] The reverse transmission data in the original reverse transmission process executed by the first communication node is cleared.

[0168] Fig.10 is a structural block diagram of another communication device provided in an embodiment of the present application. This embodiment is applied to a second communication node. Fig.10 As shown, this embodiment includes a transmitter 1010 .

[0169] The transmitter 1010 is configured to send a reverse transmission start message to the first communication node; the reverse transmission start message carries a new reverse transmission address and is used to trigger the first communication node to start a new reverse transmission process.

[0170] The communication device provided in this embodiment is configured to implement Figure 6 The communication method applied to the second communication node in the illustrated embodiment and the communication device provided in this embodiment are similar in implementation principle and technical effect, and will not be described in detail here.

[0171] In one embodiment, sending a reverse transmission start message to the first communication node includes: sending a reverse transmission start message to the first communication node when a destination reverse transmission address changes during data reverse transmission by the first communication node.

[0172] In one embodiment, in an EN-DC scenario, sending a reverse transmission start message to a first communication node includes: sending a first auxiliary node release request to the first communication node, wherein the first auxiliary node release request carries a new reverse transmission address.

[0173] In one embodiment, in the MR-DC scenario, sending a reverse transmission start message to the first communication node includes: sending an address indication message to the first communication node, where the address indication message carries a new reverse transmission address.

[0174] In one embodiment, the communication method applied to the second communication node further includes: sending a UE context release message to the first communication node.

[0175] Fig.11 Schematic diagram of a device provided in an embodiment of the present application. Fig.11 As shown, the device provided by the present application includes: a processor 1110, a memory 1120 and a communication module 1130. The number of processors 1110 in the device can be one or more. Fig.11 In the example, a processor 1110 is used. The number of memories 1120 in the device may be one or more. Fig.11 A memory 1120 is taken as an example. The processor 1110, the memory 1120 and the communication module 1130 of the device can be connected via a bus or other means. Fig.11 In the embodiment, the device may be a first communication node.

[0176] The memory 1120, as a computer-readable storage medium, may be configured to store software programs, computer executable programs, and modules, such as program instructions / modules corresponding to the device of any embodiment of the present application (e.g., a receiver and a startup module in a communication device applied to a first communication node). The memory 1120 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the device, etc. In addition, the memory 1120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 1120 may further include a memory remotely arranged relative to the processor 1110, and these remote memories may be connected to the device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0177] The communication module 1130 is configured to perform communication interaction between the first communication node and the second communication node.

[0178] The device provided above can be configured to execute the communication method applied to the first communication node provided in any of the above embodiments, and has corresponding functions and effects.

[0179] When the device is a second communication node, the device provided above can be configured to execute the communication method applied to the first communication node provided in any of the above embodiments, and have corresponding functions and effects.

[0180] An embodiment of the present application also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to execute a communication method applied to a first communication node, the method comprising: receiving a reverse transmission initiation message sent by a second communication node, the reverse transmission initiation message carrying a new reverse transmission address; and initiating a new reverse transmission process according to the new reverse transmission address in the reverse transmission initiation message.

[0181] An embodiment of the present application also provides a storage medium containing computer executable instructions, which, when executed by a computer processor, are used to execute a communication method applied to a second communication node, the method comprising: sending a reverse transmission initiation message to a first communication node; the reverse transmission initiation message carries a new reverse transmission address and is used to trigger the first communication node to initiate a new reverse transmission process.

[0182] It will be appreciated by those skilled in the art that the term user equipment encompasses any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car-mounted mobile station.

[0183] In general, various embodiments of the present application can be implemented in hardware or dedicated circuits, software, logic or any combination thereof. For example, some aspects can be implemented in hardware, while other aspects can be implemented in firmware or software that can be executed by a controller, microprocessor or other computing device, although the present application is not limited thereto.

[0184] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0185] The block diagram of any logic flow in the drawings of the present 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. A computer program may be stored on a memory. The memory may have any type suitable for 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 memory devices and systems (digital versatile discs (DVD) or compact disks (CD)), etc. Computer-readable media may include non-transient storage media. A data processor may be any type suitable for the local technical environment, such as but not limited to a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FGPAs) and a processor based on a multi-core processor architecture.

Claims

1. A communication method, characterized in that: Applied to a first communication node, comprising: Receiving a reverse transmission start message sent by the second communication node, wherein the reverse transmission start message carries a new reverse transmission address; Initiate a new reverse transmission process according to the new reverse transmission address in the reverse transmission initiation message; The receiving a reverse transmission start message sent by the second communication node includes: When the destination reverse transmission address changes during data reverse transmission, a reverse transmission start message sent by the second communication node is received; wherein the destination reverse transmission address refers to an address switched from one node to another node during data reverse transmission.

2. The method according to claim 1, characterized in that The situation where the destination reverse transmission address changes includes one of the following: the situation where the first communication node executes a switching process, and the situation where the first communication node executes a deletion process.

3. The method according to any one of claims 1-2, characterized in that: In an Evolved Universal Terrestrial Radio Access Network-New Air Interface Dual Connectivity EN-DC scenario, the receiving a reverse transmission start message sent by the second communication node includes: A first auxiliary node release request sent by a second communication node is received, where the first auxiliary node release request carries a new return address.

4. The method according to any one of claims 1-2, characterized in that: In the multi-radio technology dual-connection MR-DC scenario, the receiving a reverse transmission start message sent by the second communication node includes: An address indication message sent by the second communication node is received, where the address indication message carries a new return address.

5. The method according to claim 4, characterized in that Before receiving the address indication message sent by the second communication node, the method further includes: receiving a second auxiliary node release request sent by a second communication node; Feedback the second auxiliary node release request confirmation information to the second communication node.

6. The method according to claim 1, characterized in that The method further comprises: When receiving the reverse transmission start message, the backup first communication node executes the reverse transmission data in the original reverse transmission process.

7. The method according to claim 6, characterized in that After backing up the first communication node itself to transmit data, the method further includes: Receiving a user terminal UE context release message sent by the second communication node; The reverse transmission data in the original reverse transmission process executed by the first communication node is cleared.

8. A communication method, characterized in that: Applied to a second communication node, comprising: Sending a reverse transmission start message to the first communication node; the reverse transmission start message carries a new reverse transmission address and is used to trigger the first communication node to start a new reverse transmission process; The sending a reverse transmission start message to the first communication node includes: When the destination reverse transmission address changes during data reverse transmission by the first communication node, a reverse transmission start message is sent to the first communication node; wherein the destination reverse transmission address refers to an address switched from one node to another node during data reverse transmission.

9. The method according to claim 8, characterized in that In the EN-DC scenario, the sending of a reverse transmission start message to the first communication node includes: A first auxiliary node release request is sent to the first communication node, where the first auxiliary node release request carries a new return address.

10. The method according to claim 8, characterized in that In the MR-DC scenario, the sending of a reverse transmission start message to the first communication node includes: An address indication message is sent to the first communication node, where the address indication message carries a new return address.

11. The method according to claim 8, characterized in that The method further comprises: Send a UE context release message to the first communication node.

12. A communication device, characterized in that: Applied to a first communication node, comprising: A receiver, configured to receive a reverse transmission start message sent by the second communication node, wherein the reverse transmission start message carries a new reverse transmission address; A starting module, configured to start a new reverse transmission process according to a new reverse transmission address in the reverse transmission start message; The receiver is specifically configured as follows: When the destination reverse transmission address changes during data reverse transmission, a reverse transmission start message sent by the second communication node is received; wherein the destination reverse transmission address refers to an address switched from one node to another node during data reverse transmission.

13. A communication device, characterized in that: Applied to a second communication node, comprising: A transmitter, configured to send a reverse transmission start message to the first communication node; the reverse transmission start message carries a new reverse transmission address and is used to trigger the first communication node to start a new reverse transmission process; The transmitter is specifically configured as follows: When the destination reverse transmission address changes during data reverse transmission by the first communication node, a reverse transmission start message is sent to the first communication node; wherein the destination reverse transmission address refers to an address switched from one node to another node during data reverse transmission.

14. A communication device, characterized in that: include: A communication module, a memory, and one or more processors; The communication module is configured to perform communication interaction between the first communication node and the second communication node; The memory is configured to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 11.

15. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 11 is implemented.

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