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Method and system for retransmitting data

A data retransmission and retransmission technology, applied in the field of data retransmission, can solve problems such as data error retransmission

Active Publication Date: 2017-10-31
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and system for data retransmission, which solves the technical problem in the prior art that delay-sensitive services are sent preferentially, resulting in incorrect retransmission of RLC data at the sending end

Method used

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  • Method and system for retransmitting data
  • Method and system for retransmitting data

Examples

Experimental program
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Embodiment 1

[0041] figure 1 It is a flowchart of a data retransmission method according to an embodiment of the present invention, please refer to figure 1 :

[0042] S11. The local end sends the data configured with the sending priority to the opposite end;

[0043] S12. The radio link control layer of the local end performs radio link control layer retransmission processing according to a preset principle according to the response message fed back by the radio link control layer and the media access control layer of the opposite end.

[0044] The sending priority in step S11 can be configured according to the operation strategy. After the local RLC receives the IP data of the application layer, it analyzes the IP header of the application layer data, and identifies the service type (such as http service, or mail service, etc.) by analyzing the IP header. ), set different sending priorities for the data streams of each service type, such as configuring different priorities for Internet...

Embodiment 2

[0052] figure 2 It is a flowchart of a data retransmission method according to another embodiment of the present invention, please refer to figure 2 :

[0053] Taking the downlink transmission of the WCDMA system as an example, its PDCP (Packet Data Convergence Protocol) and RLC entities are on the RNC (Radio Network Controller), and the Mac-hs entity is on the Nodeb.

[0054] S21. The RNC receives the data sent by the core network, and its PDCP layer analyzes the application data, and uses the source IP address, target IP address, source port number, and target port number in the IP data stream corresponding to the same data stream to become the same application For data flow, the RNC sets the sending priority for each application data flow. For priority, the data in the same application data flow maintains the same sending priority.

[0055] S22. The RNC sends the data packets of each application data flow to the Nodeb, and carries the sending priority of the correspondi...

Embodiment 3

[0062] Figure 4 It is a flowchart of a data retransmission method according to another embodiment of the present invention, please refer to Figure 4 :

[0063] Taking the downlink transmission of the WCDMA system as an example, its PDCP and RLC entities are on the RNC (Radio Network Controller), while the MAC-hs entity is on the Nodeb.

[0064] S31. The RNC receives the data sent by the core network, and its PDCP entity analyzes the application data, and uses the source IP address, target IP address, source port number, and target port number in the IP data stream corresponding to the same data stream to become the same application For data flow, the RNC sets the sending priority for each application data flow. For priority, the data in the same application data flow maintains the same sending priority.

[0065] S32. The RNC sends the data packets of each application data flow to the Nodeb, and carries the sending priority of the corresponding data packet, and the way of c...

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Abstract

The invention discloses a data retransmission method and system. The method includes: after the local end sends data configured with sending priority to the opposite end, the local radio link control layer The response message fed back by the control layer is retransmitted by the radio link control layer according to the preset principle. Through the above technical solutions, the present invention solves the technical problem in the prior art that delay-sensitive services are sent preferentially, resulting in incorrect retransmission of RLC data at the sending end.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data retransmission method and system. Background technique [0002] There are rich applications in the Internet network, such as Internet access service, ftp download application service, mail service service, streaming media service, MMS service, etc. Among these rich applications, some services are delay-sensitive services, such as streaming media service, and some The service is a delay-insensitive service, such as a background download service. [0003] In order to prioritize the transmission of delay-sensitive services, some people think of configuring higher transmission priorities for delay-sensitive services, and configuring different transmission priorities for data of different types of services, which will inevitably lead to RLC (Radio Link Control, radio link control) Layer) data transmission and reception out of order, but based on the current network architectu...

Claims

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Application Information

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IPC IPC(8): H04L1/18H04L1/16
Inventor 丛进
Owner ZTE CORP
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