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rlc PDU transmission method for lte mobile communication system

A technology of a mobile communication system and a transmission method is applied in the field of RLC PDU transmission for reducing RLC segmentation, and can solve the problems of large size of RLC PDU, inability to increase the probability of segmentation and re-segmentation during new transmission, and reduce the probability of segmentation and reduce The effect of system complexity and processing overhead

Active Publication Date: 2020-07-10
WUHAN HONGXIN TELECOMM TECH CO LTD
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Problems solved by technology

[0008] In order to solve the problem of re-segmentation during retransmission due to the excessively large size of the RLC PDU during new transmission, while solving this problem, the probability of segmentation during new transmission cannot be increased. The present invention provides a method that can reduce new transmission and re-segmentation The Method of RLC Layer Segmentation for Time Transmission

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  • rlc PDU transmission method for lte mobile communication system
  • rlc PDU transmission method for lte mobile communication system
  • rlc PDU transmission method for lte mobile communication system

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Embodiment Construction

[0037] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.

[0038] The present invention proposes that the RLC layer reports the size of each RLC SDU that each logical channel needs to transmit to the MAC layer, and limits the number of bits that each logical channel of each UE can transmit within a subframe at the MAC layer, and Only an integer number of RLC SDUs are allocated resources to finally determine the number of bits that each logical channel can transmit in a subframe. This method effectively reduces the retransmission fragmentation probability caused by too large RLC SDUs during retransmission by limiting the size of the newly transmitted RLC PDU, and also effectively prevents the RB resources of a subframe from being occupied by a UE; and The MAC layer only allocates resources for an integer number of RLC SDUs, which also effectively reduces the fragmentation pro...

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Abstract

The invention provides an RLC PDU transmission method for an LTE mobile communication system. The method is characterized in that an RLC layer reports the size of each RLC SDU which needs to be transmitted of each logic channel to an MAC layer, the number of bits which can be transmitted in one subframe by each logic channel of each UE is limited at the MAC layer, resources are only distributed to an integer number of RLC SDUs, and the number of bits which can be transmitted in one subframe by each logic channel is finally determined. Through the technical scheme of the invention, one logic channel of at most one UE of one subframe can be segmented during assembly of the RLC PDUs, so that the resources of one subframe cannot be occupied by one UE while the RLC segmentation opportunity cannot be increased, the size of the RLC PDUs is effectively limited, and the segmentation opportunity during retransmission of the RLC layer is reduced. Through application of the technical scheme, the complexity and the processing overhead of the LTE mobile communication system are greatly reduced.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to an RLC PDU transmission method for reducing RLC segmentation used in an LTE mobile communication system. Background technique [0002] The protocol data unit MAC PDU generated by the transmission MAC layer is the transmission block TB (Transfer Block). The MAC layer determines the size of the transmission block TB through a scheduling algorithm, and determines the number of bits that each logical channel can transmit according to the size of the TB. The RLC PDU is generated after segmenting / concatenating / (or stuffing) the RLC SDU according to the number of bits that can be transmitted by each logical channel provided by the MAC layer and attaching the corresponding RLC layer header. After the RLC PDU is sent to the MAC layer, it is called the MAC SDU, and the MAC PDU is generated after the MAC layer is multiplexed and the corresponding MAC layer header information is attached...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
CPCH04L69/324
Inventor 钱甜甜姜琳峰陈艳红程潮
Owner WUHAN HONGXIN TELECOMM TECH CO LTD
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