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Processing method, apparatus and system for protocol data unit filling

A technology of protocol data unit and processing method, applied in digital transmission systems, transmission systems, wireless network protocols, etc., can solve the problems of waste and large number of bits in the RLCPDU header structure, achieve simple operation, improve effective throughput, and reduce overhead Effect

Active Publication Date: 2009-03-18
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0012] In the prior art, if each part of the RLC PDU header structure has a fixed size, and the size occupied by the fixed part SN+SI and the expandable part LI+E are all whole bytes, then the number of bits in the RLC PDU header structure will be It is much larger than what is actually needed, which will inevitably cause a certain amount of waste

Method used

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  • Processing method, apparatus and system for protocol data unit filling
  • Processing method, apparatus and system for protocol data unit filling
  • Processing method, apparatus and system for protocol data unit filling

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Embodiment Construction

[0057] The core idea of ​​the present invention is: at the transmitting end, padding is used to make up for the number of bits between the RLC PDU header structure and the entire byte, so that the entire RLC PDU meets the entire byte size requirement; and the MAC layer header structure plus all MAC SDUs The number of bits that differ between the total size of and the total size allocated to the MAC transport block is also filled with padding; at the same time, the padding part is discarded at the receiving end.

[0058] Based on the above ideas, the processing flow of the sending end in the present invention is as follows image 3 As shown, including the following steps:

[0059] Step 301: The RLC layer packs the PDU to be sent.

[0060] Here, the packing includes at least: performing SDU segmentation, cascading, adding header structure, and filling operations.

[0061] Generally, the RLC layer performs segmentation and concatenation operations on the SDUs sent by the network laye...

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Abstract

The invention discloses a protocol data unit (PDU) filling processing method, which comprises determining the sizes of every field in the radio link control (RLC) PDU head structure while the PDU to be sent is Packed in the RLC layer and complementing the bit number difference between the RLC PDU head structure and whole byte by filling at last. The invention further discloses a sending end apparatus, a receiving end apparatus and the corresponding systems for realizing PDU filling process. Adopting the method, apparatuses and systems in the invention can reduce the cost of the RLC PDU head structure and fully improve the effective throughput of the system.

Description

Technical field [0001] The invention relates to a protocol data unit (PDU, Protocol Data Unit) processing technology, in particular to a processing method, device and system for PDU filling. Background technique [0002] The Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) technology is the largest new technology research and development project launched by 3GPP in the past two years. In LTE, the research on PDU is a very important aspect. [0003] According to the LTE layer two protocol, after the high-level data packet radio link control (RLC, Radio Link Control) service data unit (SDU, Service Data Unit) reaches the RLC layer, except for the transparent mode, it needs to be allocated to the corresponding RLC entity according to the scheduling strategy The data block size of the packet is grouped, and the RLC PDU of the specified size is generated through operations such as segmentation and concatenation. [0004] In order to explain more clearly, the follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L1/00H04L12/56H04L47/431
CPCH04W28/06H04L69/22H04W80/02
Inventor 刘佳敏毕海洲
Owner DATANG MOBILE COMM EQUIP CO LTD
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