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SDAP (Service Discovery Application Profile) layer remapping method based on SDAP PDU (Protocol Data Unit) length

A remapping and consistent technology, which is applied in the field of SDAP layer remapping based on the length of the SDAPPPDU, can solve the problem that the uplink data cannot be guaranteed to be received correctly by the receiving end, and achieve high-reliability sending and receiving, reduce development costs, and ensure perfect results

Active Publication Date: 2019-01-01
36TH RES INST OF CETC
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  • Claims
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Problems solved by technology

[0006] In view of the above analysis, the present invention aims to provide a SDAP layer remapping method based on the SDAP PDU length to solve the problem that the prior art cannot guarantee that the uplink data is correctly received by the receiving end

Method used

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  • SDAP (Service Discovery Application Profile) layer remapping method based on SDAP PDU (Protocol Data Unit) length
  • SDAP (Service Discovery Application Profile) layer remapping method based on SDAP PDU (Protocol Data Unit) length

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Embodiment Construction

[0041] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0042] Since the RRC (Radio Resource Control, radio resource control) signaling is transmitted on the SRB (Signal radio Bearer, signaling radio bearer), the SRB is the AM mode (Acknowledgment Mode) of the RLC (Radio Link Control, radio link control layer protocol). , confirmation mode), AM has an ARQ (Automatic Repeat-reQuest, ARQ) retransmission mechanism, and there will be no signaling loss, so RRC signaling is highly reliable on the air interface, through L2 (Layer 2: Layer 2) The acknowledgment mode can ensure that each signaling can be received correctly.

[0043] figure 1 The SDAP subl...

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Abstract

The invention relates to an SDAP (Service Discovery Application Profile) layer remapping method based on the SDAP PDU (Protocol Data Unit) length, which belongs to the technical field of communicationand solves a problem that uplink data cannot be ensured to be correctly received by a receiving terminal in the prior art. The method is applied to the network side, and comprises the steps that network-side RRC (Radio Resource Control) sends RRC reconfiguration signaling to terminal-side RRC so as to enable the terminal side to perform reconfiguration according to the RRC reconfiguration signaling and generates reconfiguration completion signaling; the network-side RRC receives the reconfiguration completion signaling fed back by the terminal-side RRC, wherein the content of the reconfiguration completion signaling at least includes an SDAP PDU length field and a time point StartPoint at which the RRC reconfiguration signaling is successfully received in an air interface; and the network-side RRC starts the remapping and transmits an SDAP PDU to the terminal-side RRC so as to enable the terminal side to confirm whether the correct SDAP PDU is received or not according to the time point StartPoint and the stored SDAP PDU length field. According to the method, the terminal-side RRC can be ensured to correctly receive the SDAP PDU, high-reliability transmitting and receiving of remapping information are realized, the development cost is reduced, and the perfection of the remapping process is ensured at the same time.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an SDAP layer remapping method based on the SDAP PDU length. Background technique [0002] In 5G, a new data processing protocol sublayer - SDAP (Service Discovery Application Profile, service discovery application specification) protocol sublayer is introduced. The sublayer of the SDAP protocol mainly performs the mapping function of QoS flow (Quality of Service, quality of service) and DRB. [0003] When the mapping relationship between QoS flow and DRB (Data radio Bearer, data radio bearer) changes, for example: when the QoS flow is established, it is mapped to DRB0, and it needs to be mapped to DRB1 through a remapping method. There are currently two specific implementation methods of remapping: configuration through signaling; and reflection mapping, which is determined by the QoS flow data plane. [0004] 5G's SDAP puts forward the requirement of remapping (remappin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W28/04H04W28/24H04W28/06
CPCH04W28/0268H04W28/04H04W28/065H04W28/24
Inventor 王巍沈伟国陈勇群
Owner 36TH RES INST OF CETC
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