Efficient 5G dual-connection separation bearer data transmission method and system

A data transmission method and technology for a data transmission system, applied in the field of data transmission, can solve the problems of insufficient data transmission delay mitigation, inflexible detection of logical channel transmission status and buffer status, etc., so as to reduce packet loss and reduce packet repetition. The effect of sorting delay and reducing transmission delay

Pending Publication Date: 2022-03-15
上海微波技术研究所(中国电子科技集团公司第五十研究所)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention does not flexibly detect the transmission state and buffer state of the logical channel, and the data transmission delay is not alleviated enough

Method used

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  • Efficient 5G dual-connection separation bearer data transmission method and system
  • Efficient 5G dual-connection separation bearer data transmission method and system
  • Efficient 5G dual-connection separation bearer data transmission method and system

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Experimental program
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Embodiment 1

[0078] According to an efficient 5G dual connection separation bearer data transmission method provided by the present invention, such as Figure 1-Figure 4 shown, including:

[0079] Step S1: Establish dual connection separation bearer, and initialize the state coefficients of the primary RLC entity and the secondary RLC entity;

[0080] Step S2: After receiving the data transmission request, put the data to be transmitted into the sending queue after processing;

[0081] Step S3: perform data split transmission;

[0082] Step S4: The primary and secondary RLC entities process and send the data to be sent, and report the status of the logical channel to the PDCP entity respectively;

[0083] Step S5: Analyze the transmission status, and if there is a preset situation, perform data recovery and transfer transmission.

[0084] Specifically, by monitoring and comparing the data buffer status and transmission status of the primary and secondary RLC physical logical channels, t...

Embodiment 2

[0109] Embodiment 2 is a preferred example of Embodiment 1 to describe the present invention more specifically.

[0110] Those skilled in the art can understand an efficient 5G dual connection separated bearer data transmission method provided by the present invention as a specific implementation mode of an efficient 5G dual connection separated bearer data transmission system, that is, the efficient 5G dual connection separated bearer The data transmission system can be realized by executing the steps and procedures of the efficient 5G dual connection separation bearer data transmission method.

[0111] An efficient 5G dual connection separation bearer data transmission system provided according to the present invention includes:

[0112] Module M1: establish dual connection separation bearer, initialize the state coefficients of the primary RLC entity and the secondary RLC entity;

[0113] Module M2: After receiving the data transmission request, put the data to be transmit...

Embodiment 3

[0142] Embodiment 3 is a preferred example of Embodiment 1 to describe the present invention more specifically.

[0143] For the scenario of separate bearer split transmission mode, the 3GPP standard defines a simple split strategy, that is, decides whether to perform split transmission based on the separation threshold (ul-DataSplitThreshold), but does not clearly specify the specific split traffic. However, this method dynamically allocates data traffic by monitoring the transmission status of logical channels on different paths, so that business data can be transmitted to the opposite end more quickly, reducing data transmission delay, and minimizing the SN gap of PDCP, reducing the PDCP at the receiving end. Reordering delay can guarantee business service quality.

[0144] In addition, for the scenario of separate bearer and offload transmission mode, when the transmission on the logical channel of a certain path is abnormal (such as weak signal, network congestion, etc.),...

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Abstract

The invention provides an efficient 5G dual-connection separation bearer data transmission method and system, and the method comprises the steps: S1, building a dual-connection separation bearer, and initializing the state coefficients of a main RLC entity and an auxiliary RLC entity; s2, receiving a data transmission request, processing to-be-transmitted data, and putting the processed to-be-transmitted data into a sending queue; s3, data distribution transmission is carried out; s4, the main RLC entity and the auxiliary RLC entity process and send data to be sent, and respectively report the state of a logic channel to the PDCP entity; and S5, carrying out transmission state analysis, and if a preset condition exists, carrying out data recovery and transfer sending. According to the invention, the data packet reordering delay of the PDCP at the receiving end is reduced, and the service delay is reduced; by detecting the transmission state of the logic channel and the state of the cache region, the to-be-transmitted data is reasonably shunted and transmitted, so that the data transmission delay is reduced, the PDCP reordering delay of a receiving end is further reduced, the service delay is reduced on the whole, and the service quality is improved.

Description

technical field [0001] The present invention relates to the field of data transmission, in particular to an efficient 5G dual-connection separation bearer data transmission method and system. Background technique [0002] 5G dual connection (NR-DC, NR-NR Dual-Connection) is an important technology introduced in 3GPP Release15, and will be perfected in 3GPP Release16. Through the dual connection technology, the non-ideal backhaul (non-ideal backhaul) Xn interface can be used between the 5G primary base station and the 5G secondary base station to achieve multi-carrier transmission, thereby improving terminal throughput and data transmission reliability. (if attached figure 1 ) [0003] Three types of bearers are defined in 5G dual connectivity: MCG bearer, SCG bearer and Split bearer. MCG bearer is a bearer for data transmission only through the primary base station; SCG bearer is a bearer for data transmission only through the secondary base station; Split bearer (separat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/14H04W76/15
CPCH04W28/14H04W76/15
Inventor 王良金泸均钱枫
Owner 上海微波技术研究所(中国电子科技集团公司第五十研究所)
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