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Data retransmitting method

A data retransmission, user terminal technology, applied in the direction of error prevention/detection through transmission repetition, radio/inductive link selection arrangement, selection device, etc., can solve problems such as user dropped calls, reduce data volume, improve data The effect of sending efficiency and reducing data redundancy

Active Publication Date: 2006-10-25
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

[0018] The present invention provides a data retransmission method to solve the problem that the number of retransmissions of some RLC PDUs exceeds the maximum allowable retransmission when the amount of discarded RLC PDU data is large when performing HS-DSCH channel switching in the prior art. The number of times, resulting in the problem of user dropped calls

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Embodiment Construction

[0041] The present invention provides two ways to retransmit RLC PDUs that are lost due to HS-DSCH switching and are not confirmed by the user terminal.

[0042] Method 1: RNC first sends the RLC PDU with the smallest sequence number that has not been confirmed by the user terminal, and carries a polling request to obtain the status report of the user terminal; RNC determines the RLC PDU that should be retransmitted according to the status report, and retransmits to the target NodeB MAC-hs queue, and then sent to the user terminal.

[0043] The specific signaling process is as follows figure 1 As shown, the following steps are included (assuming that the user terminal does not confirm to the RLC entity of the RNC whether the RLC PDU with the sequence number between m~n is received correctly, wherein m≤n):

[0044] 1. When the HS-DSCH channel switching occurs in the user terminal, the RNC first suspends the RLC entity, and then reconfigures the wireless link between the origin...

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Abstract

This invention discloses a method for re-transmitting data used in data re-transmission in the switch of HS-DSCH in the WCDMA system including: a radio network controller (RNC) gets the radio link control packet data unit (RLC PDU), which should be re-transmitted to the user terminal, the RNC sends the RLC PDU should be re-transmitted to the user terminal to the switched high speed media access control MAC-hs queue of the switched target area base station in terms of the sequence number from small to big in batches based on the pre-set or actual transmitted each time in the physical layer RLC PDU number then to re-transmit it to the user terminal.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a data retransmission method applied to high speed downlink shared channel (High Speed ​​Downlink Shared Channel, HS-DSCH) switching in WCDMA system. Background technique [0002] The high-speed downlink shared channel in the WCDMA system can provide a high-speed downlink packet data transmission rate, and it selects and schedules each user to send data with a period of 2ms. The data that the user needs to send first arrives at the high-speed media access control of the NodeB through the interface Iub from the RNC to the NodeB of the cell base station from the Radio Link Control (RLC) entity of the Radio Network Controller (Radio Net Controller, RNC) (Medium Access Control High Speed, MAC-hs) queue, and then stored, when the user is scheduled, the data is sent out. If the user wants to achieve the expected high rate, then a large amount of sufficient data must be st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/08H04Q7/38
Inventor 王晓霞
Owner XFUSION DIGITAL TECH CO LTD
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