Management method for automatic retransmission request window

An automatic retransmission request and window management technology, which is applied in the direction of using the return channel for error prevention/detection, etc., can solve the legacy problems of LTE wireless interface SDUDiscard, etc., to avoid waste of wireless resources, avoid timer overtime, and avoid buffer overload Effect
CN101478380AActive Publication Date: 2009-07-08ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2009-07-08

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Abstract

The invention discloses an automatic repeat request (ARQ) window management method which is characterized in that receiving terminals of layer entity are controlled by use of wireless links of confirmation mode; and when the sections of the wireless link control protocol data cell corresponding to the lower boundary of the currently-received window or all the wireless link control protocol data cells are not received successfully and the preset conditions are met, the receiving window are triggered to move continuously. The ARQ window management method overcomes the problems of wireless resource waste and unfairness when the service data unit (SDU) is discarded, and avoids the complexity of sending the move receiving window (Send MRW).
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Description

technical field

[0001] The invention relates to the technical field of digital mobile communication, in particular to an automatic repeat request (ARQ) window management method in a wireless communication system. Background technique

[0002] The radio link control layer (RLC: Radio Link Control) of the wireless interface of the third-generation mobile communication system WCDMA (Wideband Code Division Multiple Access) includes three types of RLC entities: transparent mode (TM: Transparent Mode), unacknowledged mode (UM: Unacknowledged Mode) and confirmation mode (AM: Acknowledged Mode). The TM RLC entity and the UM RLC entity can be configured as a sending RLC entity or a receiving RLC entity, where the sending RLC entity sends a Radio Link Control Protocol Data Unit (RLC PDU: Radio Link Control Protocol Data Unit), and the receiving RLC entity receives an RLC PDU. The AM RLC entity includes a sending end and a receiving end, where the AM RLC entity at the sending end send...

Claims

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