A data transmission method and system

A data transmission method and technology for data transmission services, applied in the field of communications, can solve problems such as affecting the sending rate and no new data being sent by the sender, and achieve the effect of increasing the sending rate

Active Publication Date: 2011-11-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The following problems exist in the prior art: when the discarded SDU has a segment outside the sending window, since the sending window has not moved before the MRW ACK is received, the sending end has no new data to send before the MRW process is completed, which will affect the sending rate

Method used

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  • A data transmission method and system
  • A data transmission method and system

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Embodiment Construction

[0037] The core idea of ​​the present invention is to provide a data transmission method, which is applied to the MRW process of the radio link control layer. The AMD PDUs that meet the sending requirements can be sent in the MRW process, so that the bandwidth can be effectively used and the sending rate can be increased.

[0038] Based on the above ideas, the present invention provides a data transmission method, which is applied to the data transmission service of AM mode, and specifically adopts the following technical solutions:

[0039] The RLC entity at the sending end initiates the MRW process according to the SDU discarding method configured by the upper layer, and sends a status PDU with MRW SUFI; and uses the AMD PDU at the end of the discarded SDU data as the bottom of the sending window to construct a temporary sending window;

[0040] When the RLC entity at the sending end does not receive MRW ACK (Move Receiving Window Acknowledgment, Move Receiving Window Acknowle...

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Abstract

A data transmission method applied to the data transmission service of the Acknowledged Mode (AM) is provided. The method comprises: after initiating the Move Receiving Window (MRW) process according to the discarding mode of a service data unit (SDU), the Radio Link Control (RLC) entity of a sending terminal sends a status packet with the Move Receiving Window Super Field (MRW SUFI) and constructs a temporary sending window; and before receiving the Move Receiving Window Acknowledgement (MRW ACK) sent by the RLC entity of a receiving terminal, the RLC entity of the sending terminal sends the Acknowledged Mode Data Protocol Data Unit (AMD PDU) existing in the temporary sending window. A data transmission system is also provided. It can make greater use of the bandwidth during the MRW process by employing the present technical solutions, so as to improve the sending rate without influencing the normal transmission of the MRW process.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and system. Background technique [0002] In 3G (The 3 rd Generation, the third generation mobile communication technology) in the mobile communication system UMTS (Universal Mobile Telecommunications System, universal mobile communication system), the Uu interface protocol stack is divided into a physical layer, a data link layer and a network layer. Among them, the RLC (Radio Link Control, radio link control) sublayer of the data link layer provides high-level layers with TM (Transparent Mode, transparent mode), UM (Unacknowledged Mode, non-acknowledged mode) and AM (Acknowledged Mode, confirmed mode) three This mode of data transmission service realizes functions such as segmentation, concatenation, filling, error control, and flow control. [0003] In AM mode, after receiving the high-level SDU (Service Data Unit, service data unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/04H04L1/00
CPCH04L1/1877
Inventor 张苑
Owner ZTE CORP
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