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Method for implementing wireless links control layer with active retransmission and period answer

A technology of wireless link control and implementation method, applied in the field of wireless link control layer implementation, can solve problems such as complex Polling mechanism, and achieve the effect of simplifying functions and simplifying implementation

Inactive Publication Date: 2008-07-16
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0005] In the R6 version, the polling mechanism is used. The sending side sets the Polling bit equal to 1, and the receiving side is required to reply the status report of the PDU received in the receiving window. The polling mechanism is very complicated.

Method used

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  • Method for implementing wireless links control layer with active retransmission and period answer
  • Method for implementing wireless links control layer with active retransmission and period answer

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Embodiment Construction

[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Such as figure 1 As shown, it is the RLC Data PDU structure in the R6 version of the prior art. In this PDU structure, the Polling (P) bit is used, and the sending side sets the Polling bit equal to 1 to request the receiving side to reply the status report of the PDU received in the receiving window, and the Polling mechanism is very complicated.

[0049] The main idea of ​​the present invention is: in combination with the characteristics of the HSPA protocol layer, from the perspective of variable-length wireless link control layer and simplified implementation, a wireless link control layer implementation method for active retransmission and periodic response is proposed. On the basis of the main body inheriting the R6 version, it is proposed that the RLC concatenation function may not be supported, the polling and error PDU report...

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Abstract

The invention discloses a method for realizing radio link control layer which does active retransmission and periodical response; a sending side RLC layer receives SDU of an upper layer, generates PDU and adds the PDU in a dispatch queue; PDUs in a retransmission queue and the dispatch queue are sent to a logic channel one by one, and a retransmission timer is started for each sent PDU; if the retransmission timer overtimes and still can not obtain a positive response of a corresponding PDU from a statues report of an opposite terminal, the retransmission timer is reset and then whether the PDU exceeds the maximum retransmission times or not is judged, if no, the PDU is hung in the retransmission queue to perform active retransmission; when a receiving side RLC layer receives the PDU, the receiving side RLC layer sends the status report to the sending side, if the PDU is lost, the status report of a negative response is sent, and the serial number of the PDU is reported; if the PDU is not lost, the status report of the positive response is sent. The invention carries on the R6 version and simplifies the complicated Polling mechanism of the R6 version on the basis of not influencing the performance.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a radio link control (RLC) layer implementation method of active retransmission and periodic response in the third generation mobile communication system. Background technique [0002] With the user's increasing demand for speed in the mobile environment and the continuous development of mobile communication technology, the high data rate packet service HSPA technology has attracted more and more attention and attention. For packet services, the data integrity requirements are relatively high, so HSPA services require the error retransmission capability of the radio link layer. [0003] The RLC protocol has three modes: Transparent Mode TM (Transparent Mode), Unacknowledged Mode UM (Unacknowledged Mode) and Acknowledged Mode AM (Acknowledged Mode); among them, AM adopts error retransmission technology, which is suitable for the transmission of packet services, so HSPA genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56
Inventor 阮象华张健杨阳
Owner ZTE CORP
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