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A SDAP layer remapping method based on sdap PDU length

A remapping and consistent technology, applied in the field of SDAP layer remapping based on SDAP PDU length, can solve the problem of inability to ensure that uplink data is correctly received by the receiving end, and achieve the effect of ensuring perfect, high-reliability transceiver and reducing development costs.

Active Publication Date: 2021-06-01
36TH RES INST OF CETC
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  • Application Information

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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

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  • A SDAP layer remapping method based on sdap PDU length
  • A SDAP layer remapping method based on sdap PDU 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 layer remapping method based on the SDAP PDU length, belongs to the field of communication technology, and solves the problem in the prior art that uplink data cannot be guaranteed to be correctly received by a receiving end. The method is applied to the network side; including the following steps: the network side RRC sends RRC reconfiguration signaling to the terminal side RRC, so that the terminal side performs 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, the content of the reconfiguration completion signaling at least includes: the SDAP PDU length field, the time point StartPoint when the RRC reconfiguration signaling is successfully received on the air interface; the network side RRC starts remapping, and sends The side RRC sends the SDAP PDU, so that the terminal side can confirm whether the correct SDAP PDU is received according to the StartPoint and the stored SDAP PDU length field. The method can ensure that the RRC at the terminal side correctly receives the SDAP PDU, realizes highly reliable sending and receiving of remapping information, reduces development costs, and ensures the perfection of the remapping process 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 Patents(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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