Data transmitting method and device, data receiving method and device, communication system, and communication device

By merging the functions of the PDCP layer and the RLC layer, the protocol stack processing steps are simplified, solving the problem of high protocol stack complexity in existing technologies and enabling efficient transmission of high-speed data.

WO2026044560A1 Publication Date: 2026-03-05BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Application Number
PCT/CN2024/115302
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-08-28
Publication Date
2026-03-05

AI Technical Summary

Technical Problem

In existing technologies, the repetitive functions and complex processing steps of the PDCP and RLC layers result in high protocol stack processing complexity, making it difficult to effectively support high-speed data transmission.

Method used

By merging the functions of the PDCP and RLC layers, the protocol stack processing is simplified. By merging the functions of the PDCP and RLC layers in the first protocol layer, the data processing steps are simplified, enabling data packet segmentation and reassembly.

Benefits of technology

It simplifies the processing complexity of the protocol stack, improves data transmission efficiency, and supports high-speed data transmission.

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Abstract

The present disclosure relates to the technical field of communications, and relates to a data transmitting method and device, a communication system, and a communication device. The method comprises: a transmitting entity of a first protocol layer of a first device receiving a first data packet transmitted by a second protocol layer of the first device, wherein the second protocol layer is the layer above the first protocol layer; setting a sequence number (SN) field in a packet header of the first protocol layer to be a value of a first state variable; when a first condition is satisfied, segmenting a second data packet to obtain a plurality of data packet segments, wherein the second data packet is obtained by performing first processing on the first data packet, or the second data packet is the first data packet; and transmitting each data packet segment among the plurality of data packet segments to a third protocol layer, or when the first condition is not satisfied, transmitting the second data packet to the third protocol layer. The processes of transmitting and receiving data by the protocol layers are simplified, the functions of the PDCP and RLC layers are merged, and the processing complexity of a protocol stack is simplified, thereby effectively supporting the transmission of high-rate data.
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