Method and device for regulating maximum message size

A technology of maximum message length and message, applied in network traffic/resource management, digital transmission system, electrical components, etc., can solve the problems that the system throughput cannot reach the maximum, waste of system software and hardware resources, and retransmission of MPDU is too much , to save software and hardware resources, improve system throughput, and save channel resources

Inactive Publication Date: 2012-01-11
NEW H3C TECH CO LTD
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Problems solved by technology

[0006] The disadvantages of the prior art are: due to the existence of channel interference, the length of the A-MPDU message sent each time is not the optimal result, resulting in that the system throughput cannot reach the

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  • Method and device for regulating maximum message size
  • Method and device for regulating maximum message size
  • Method and device for regulating maximum message size

Examples

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Example Embodiment

[0057] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0058] figure 2 This is a flowchart of a method for adjusting the maximum message length of A-MPDU provided by an embodiment of the present invention, such as figure 2 As shown, the specific steps are as follows:

[0059] Step 200: Preset the upper limit of error packet rate tolerance PER up Sum error packet rate tolerance lower limit PER down .

[0060] Where PER up down . PER up , PER down The value of can be determined based on experience, for example: PER up Can be 10%, PER down Can be 15%.

[0061] Step 201: The sender and receiver negotiate to determine the maximum message length L of the A-MPDU max .

[0062] Step 202: The sender initializes L 1 =L max , The initial packet error rate PER 0 =0.

[0063] Among them, L 1 It is the maximum message length used by the sender to gather the first A-MPDU message. The subscript 1 indicates that the seq...

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Abstract

The invention discloses a method and a device for regulating a maximum message size. The method comprises the following steps that: the tolerance upper limit and the tolerance lower limit of a wrong packet rate are preset, wherein the tolerance upper limit of the wrong packet rate is smaller than the tolerance lower limit of the wrong packet rate, a sender aggregates medium access control protocol data units (MPDUs) in a send buffer according to the maximum message size of a current aggregate medium access control protocol data unit (A-MPDU) to obtain an A-MPDU message; the sender transmits the A-MPDU message, after transmission, the wrong packet rate of the message is counted, and when the wrong packet rate is smaller than the tolerance upper limit of the wrong packet rate, the maximum message size of the current A-MPDU is enlarged; when the wrong packet rate is greater than the tolerance upper limit of the wrong package rate, the maximum message size of the current A-MPDU is shortened; and otherwise the maximum message size of the current A-MPDU is kept. By the method, the throughput of a transceiver is increased.

Description

technical field [0001] The present invention relates to the technical field of message aggregation, in particular to a method and a device for adjusting the maximum message length of an aggregated medium access control protocol data unit (A-MPDU, Aggregate MAC Protocol Data Unit). Background technique [0002] In order to improve the throughput, the Institute of Electrical and Electronics Engineers (IEEE, Institute of Electrical and Electronics Engineers) 802.11n has made a series of improvements to the Medium Access Control (MAC, Medium Access Control) layer of 802.11, converging the MAC protocol data unit ( A-MPDU, Aggregate MAC Protocol Data Unit) transceiver is one of them. [0003] The A-MPDU technology aggregates multiple MPDU messages into one A-MPDU message for transmission. figure 1 It is a schematic diagram of the structure of the A-MPDU message, such as figure 1 As shown, the A-MPDU message only uses one physical layer (PHY) header, and the channel only needs to...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L1/00H04W28/06H04L47/36
Inventor 李韬王维兴
Owner NEW H3C TECH CO LTD
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