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A method for generating AM PDU fragments in LTE RLC 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: 2016-04-06
JIANGSU SINOLTE WIRELESS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] 1. For each AMPDU fragment, the sender of the RLC entity must re-fill the FI and E in the AMPDU fixed header and the E and LI in the extended header according to the specific conditions of the SDU included in the AMPDU fragment, and calculate High complexity;
[0015] 2. This processing method does not take advantage of the transmission reliability of RLC itself in AM mode;
[0017] 4. When the receiving end of the RLC entity merges AMPDU fragments, if there are data duplication, superposition, etc., in addition to considering SO processing, it also needs to additionally merge or split E and LI, and the processing details are more , the computational complexity is high

Method used

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  • A method for generating AM PDU fragments in LTE RLC AM mode
  • A method for generating AM PDU fragments in LTE RLC AM mode
  • A method for generating AM PDU fragments in LTE RLC 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 AMPDU fragments and the definition of SO are adjusted in the improved solution.

[0042] 1. AMPDU Fragmentation Format

[0043] The AMPDU fragment format no longer includes the extended header, only the fixed header and the data part, the format is as follows Figure 4 Shown:

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

[0045] 2. SO calculation start position

[0046] Such as Figure 5 As shown, SO indicates the position of the first byte of the AMPDU fragment data part relative to the first byte of the original AMPDU extension header, if the extension h...

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Abstract

The invention discloses an LTE? RLC? AM in AM mode? How to generate PDU fragments. This approach is no longer used traditionally in the construction of AM? When the PDU is fragmented, it is necessary to reassemble the data and fill in the header control information, but the entire AM? The PDU as a whole is directly assembled and sent in segments as data. This way to take full advantage of RLC? The transmission reliability of AM, while greatly simplifying the AM mode of AM? The sending and receiving processing of PDU fragmentation makes it easier for the system to realize.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for generating AMPDU fragments in an LTELCAM mode. Background technique [0002] In the RLCAM mode of LTE, the RLC layer guarantees the reliability of AMPDU transmission through the feedback mechanism: that is, the sender needs to save the data packet until the receiver does not confirm receipt of an AMPDU. When the receiver feedbacks that it has not received an AMPDU, Then 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 RLCAM mode, there are three types of data packets: AMPDU, AMPDU fragments, and status PDUs. The sender sends AMPDUs and AMPDU fragments, which all belong to data PDUs; feedback to the sender. AMPDU is used for the first transmission and retransmission under the condition of suff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L12/951H04L47/43
Inventor 赵昊昱
Owner JIANGSU SINOLTE WIRELESS TECH
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