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Method and device for dispatching retransmission data

A technology for retransmitting data and the number of retransmissions. It is applied in the direction of error prevention/detection using the return channel. It can solve problems such as inability to accurately express user status, inability to guarantee user transmission quality, and inability to reflect user transmission quality. The effect of transmission opportunities

Inactive Publication Date: 2010-12-08
ZTE CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] Therefore, the existing method of scheduling retransmission data only based on the information of one data packet cannot accurately express the current state of the user, nor can it reflect the user's transmission quality, so that the user's transmission quality cannot be continuously guaranteed

Method used

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  • Method and device for dispatching retransmission data
  • Method and device for dispatching retransmission data
  • Method and device for dispatching retransmission data

Examples

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Embodiment Construction

[0041] figure 1 It is a flow chart of the method for scheduling retransmission data in the present invention, such as figure 1 Shown, the inventive method comprises the following steps:

[0042] Step 100: Obtain the average number of retransmissions of each HARQ connection, and set the priority level according to the maximum number of retransmissions set by the system.

[0043] In the OFDM system, the HARQ technology is used based on the connection, that is, once the connection is enabled with HARQ, all data packets on the connection are transmitted in the HARQ manner. When the terminal accesses the network, it will be assigned a connection identifier (ID) corresponding to the HARQ connection.

[0044] Obtaining the average number of retransmissions of each HARQ connection is: according to the HARQ connection ID to distinguish the HARQ connection to which the data packet belongs, and according to the correct reception (ACK) information fed back by the receiver, the number of...

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Abstract

The invention provides a method and a device for dispatching retransmission data. The method comprises the following steps of: acquiring retransmission times of each hybrid automatic retransmission request (HARQ) connection, and setting a priority level according to the maximum retransmission time set by a system; dividing the priority level of a data packet corresponding to each HARQ connection, and dispatching the retransmission data according to the priority level. The invention divides the priority level of the data packet corresponding to each HARQ connection through recording the transmission times of each HARQ connection, ensures that the priority level is determined by using a user as a unit, and continuously ensuring the transmission quality of the user. According to the method of the invention, the transmission is carried out through the method of the invention, and the connection of better transmission quality is ensured to acquire more transmission chances.

Description

technical field [0001] The present invention relates to Hybrid Automatic Repeat Request (HARQ, Hybrid Automatic Repeat Request) technology, especially a kind of Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) (the method for scheduling retransmission data in the HARQ technology of the system and devices. Background technique [0002] In the field of modern wireless communication, the reliability requirements of data transmission are getting higher and higher. At present, many systems generally adopt HARQ technology, which combines forward error correction coding (FEC) technology and automatic repeat request (ARQ) technology. Get up and absorb the advantages of ARQ technology and FEC technology. The sender uses FEC encoding to send information. When the number of error bits received by the receiver is within the error correction capability, the error can be corrected by itself. When the error is serious and cannot be corrected, i...

Claims

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Application Information

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