Method for generating AM (Amplitude Modulation) PDU (Protocol Data Unit) fragments under LTE (Line Termination Equipment) RLC (Radio Link Control) AM mode

A mode and data part technology, applied in the direction of digital transmission system, electrical components, error prevention, etc., can solve the problems of many processing details, high computational complexity, and failure to use RLC transmission reliability, etc., to simplify the complex processing process and process Clear process, easy to understand and achieve results

Active Publication Date: 2014-07-23
JIANGSU SINOLTE WIRELESS TECH
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Problems solved by technology

[0014] 1. For each AM PDU fragment, the sender of the RLC entity must re-fill the FI and E in the AM PDU fixed header, and the E and E in the extended header according to the specific conditions of the SDU included in the AM PDU fragment. LI, high computational complexity;
[0015] 2. This processing method does not take advantage of the

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  • Method for generating AM (Amplitude Modulation) PDU (Protocol Data Unit) fragments under LTE (Line Termination Equipment) RLC (Radio Link Control) AM mode
  • Method for generating AM (Amplitude Modulation) PDU (Protocol Data Unit) fragments under LTE (Line Termination Equipment) RLC (Radio Link Control) AM mode
  • Method for generating AM (Amplitude Modulation) PDU (Protocol Data Unit) fragments under LTE (Line Termination Equipment) RLC (Radio Link Control) AM mode

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0041] First, the format of AM PDU fragmentation and the definition of SO have been adjusted in the improved scheme.

[0042] 1. AM PDU Fragmentation Format

[0043] The extended header is no longer included in the AM PDU fragment format, only the fixed header and data part are included, the format is as follows Figure 4 Shown:

[0044] Among them, the D / C, P, FI, E and SN in the AM PDU fragment fixed header are the values ​​of the original AM PDU, RF indicates whether the AM PDU is an AM PDU or a fragment of the AM PDU, and LSF indicates the AM PDU fragment Whether the last byte of the corresponding to the last byte of the source AM PDU.

[0045] 2. SO calculation start position

[0046] Such as Figure 5 As shown, SO indicates the position of the first byte of the AM PDU fragment data part relative to the first byte of the original AM PDU e...

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Abstract

The invention discloses a method for generating AM (Amplitude Modulation) PDU (Protocol Data Unit) fragments under an LTE (Line Termination Equipment) RLC (Radio Link Control) AM mode. The processing method does not use a traditional way of needing to re-perform data assembly and refill the control information of a head part when the AM PDC fragment is constructed, and the whole AM PDU as data is directly assembled and sent fragmentally. Therefore, the way makes the best of using the transmission reliability of the RLC AM; meanwhile, the transmission and receiving processes of the AM PDU fragments under the AM mode can be greatly simplified, thereby being more convenient to systematically realize the generating method.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for generating AM PDU fragments in an LTE RLC AM mode. Background technique [0002] In the RLC AM mode of LTE, the RLC layer ensures the reliability of AM PDU transmission through the feedback mechanism: that is, the sender needs to save the data packet until the receiver does not confirm receipt of an AM PDU. AM PDU, the sender needs to resend. Since the size of the data that can be sent by the RLC is limited by the allocation authorization of the MAC, it is possible to retransmit the data packet in fragments. [0003] In RLC AM mode, there are three data packet types: AM PDU, AM PDU fragmentation and status PDU, wherein the sender sends AM PDU and AM PDU fragmentation, which all belong to data PDU; and the receiver sends status PDU to The reception status of the data PDU is fed back to the sender. The AM PDU is used for the first transmission and the...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L12/951H04L47/43
Inventor 赵昊昱
Owner JIANGSU SINOLTE WIRELESS TECH
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