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Communication method and device
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A communication method and a technology for indicating information, applied in the field of communication
Pending Publication Date: 2022-04-12
HUAWEI TECH CO LTD
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[0005] The embodiment of the present application provides a communication method and device, which are used to solve the data packet processing synchronization problem of two access network devices in a dual UPF scenario, so as to ensure uninterrupted business communication and achieve the purpose of improving the reliability of communication links
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Embodiment 1
[0195] In Embodiment 1, the SMF can implement the above scheme 1 through the first PDU session establishment process and the second PDU session establishment process. Figure 11 with Figure 12 Exemplary descriptions are given respectively.
[0196] see Figure 11 , the first PDU session establishment process includes:
[0197] 1101. The terminal sends a first PDU session establishment request (PDU Session EstablishmentRequest) to the AMF.
[0198] Wherein, the first PDU session establishment request is used to request establishment of the first PDU session. The first PDU session establishment request includes not only the identifier of the first PDU session, but also the identifier of the second PDU session, thereby indicating that the second PDU session and the first PDU session are mutually redundant sessions.
[0199] Wherein, the identifier of the second PDU session may be allocated by the terminal for the second PDU session in advance.
[0200] 1102. The AMF perform...
Embodiment 2
[0280] In Embodiment 2, the SMF can implement the above scheme 2 through the first PDU session establishment process and the second PDU session establishment process. Figure 13 with Figure 14 Exemplary descriptions are given respectively.
[0281] see Figure 13 , the first PDU session establishment process includes:
[0282] Steps 1301-1310 are the same as steps 1101 to 1110 respectively.
[0283] 1311. The SMF sends an N1N2 message to the AMF.
[0284] Wherein, the N1N2 message includes the N2 message, and the N2 message includes the first tunnel information of the first UPF, which is used for the first access network device to transmit the uplink data packet of the first PDU session to the first UPF, and also includes The network access device processes the information of the first PDU session.
[0285] Optionally, the N1N2 message also includes an N1 message, and the N1 message includes fifth indication information sent to the terminal, where the fifth indication in...
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Abstract
The invention provides a communication method and device, and relates to the technical field of communication. In the communication method, a terminal establishes a first PDU session of which an anchor point is a first user plane network element and a second PDU session of which an anchor point is a second user plane network element to communicate with a data network, and access network equipment accessed by the terminal comprises first access network equipment and second access network equipment which have the same cell configuration. The session managementnetwork element sends first indication information to a first user plane network element and sends second indication information to a second user plane network element, and the first indication information and the second indication information are both used for indicating mapping of an application layer serial number and a GTP-U layer serial number of a downlink data packet through a first mapping rule; therefore, synchronization of data packet processing of the two access network devices is realized, service communication is ensured not to be interrupted, and the purpose of improving the reliability of a communication link is achieved.
Description
technical field [0001] The present application relates to the technical field of communication, and in particular to a communication method and device. Background technique [0002] With the development of communication technology, there is a higher requirement for reliability between a terminal and other devices (such as a terminal or a network device). For example, the reliability requirements of many industrial applications are basically above 99.9999%, and these applications with high reliability requirements basically have high requirements for delay. However, the current communication architecture often cannot meet the reliability requirements in some communication scenarios. For example, in the communication scenario related to the business of the factory (to business, to B), the mobile control (motion control, MC) business requires 999.999% reliability from the terminal to other devices. For example, the communication service terminal is allowed to The total durati...
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