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MAC access management method and unit

A technology for access management and channel access, which is applied in the field of MAC access management methods and management units, can solve problems such as waste, inability to guarantee service fairness, waste of network resources, etc., to avoid waste and take into account business priority and time Delayed, high-priority effects

Inactive Publication Date: 2010-06-16
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The first purpose of the present invention is to propose a MAC access management method for the defects of waste of network resources in the prior art and the inability of the existing EDCF to guarantee service fairness, so as to realize Qos management of multi-hop networks and avoid waste of network resources
[0011] The second purpose of the present invention is to propose a MAC access management unit to realize QoS management of multi-hop networks and avoid waste of network resources in view of defects such as the waste of network resources in the prior art and the inability of the existing EDCF to guarantee service fairness.

Method used

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  • MAC access management method and unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to an embodiment of the present invention, a MAC access management method is provided, figure 2 It is a flow chart of Embodiment 1 of the MAC access management method according to the present invention. Such as figure 2 As shown, this embodiment includes:

[0033] Step S102: Obtain information related to the multi-hop service of the access data frame of the MAC layer;

[0034] Step S104: judging whether the data frame can reach the destination node within the tolerance delay according to the multi-hop service related information;

[0035] Step S106: If the data frame can reach the destination node within the tolerance time delay, execute step S107, otherwise execute step S108;

[0036] Step S107: Discard the data frame, end the process, and the upper layer decides to retransmit or terminate the service;

[0037] Step S108: Adjust the channel access parameters of the MAC layer.

[0038] In this embodiment, by collecting multi-hop service-related informat...

Embodiment 2

[0040] image 3 It is a flowchart of Embodiment 2 of the MAC access management method according to the present invention. This embodiment introduces the collection, judgment and application of real-time service delay information, and adjusts the channel access parameters obtained according to EDCF, so that data frames with short remaining lifetimes can obtain a higher channel access priority. Such as image 3 As shown, the channel access parameter adjustment process of the MAC access management method in this embodiment includes:

[0041] Step S202: Map the service category TC to the access category AC according to the EDCF mechanism, obtain the AC mapped according to the data frame TC, and further obtain AIFSN[AC], CWmin, CWmax;

[0042] Step S204: Determine whether it is a real-time service, if yes, enter step S204, otherwise, enter step S214;

[0043] Step S206: Obtaining multi-hop related information may require a cross-layer design mechanism;

[0044] Step S208: Determi...

Embodiment 3

[0052] The process of Embodiment 2 of the present invention is described in detail below by way of example:

[0053] 1) According to the EDCF mechanism (there are unified and detailed regulations in the IEEE 802.11e standard document), the service category TC is mapped to the access category AC, and the AC mapped according to the data frame TC is obtained, as shown in Table 1. According to this mapping relationship table, The priorities of TCs are mapped to ACs:

[0054] Table 1 Mapping relationship between TC priorities and ACs

[0055] TC priority (with 802.1D

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access category

AC

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[0056] Further obtain AIFSN[AC], CWmin, and CWmax according to the obtained AC, as shown in Tab...

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Abstract

The invention discloses MAC access management method and device, wherein the MAC access management method comprises the following steps of: acquiring the multi-hop service relevant information of an data frame of an MAC layer; judging whether the data frame achieves a destination node within tolerant time delay or not according to the multi-hop service relevant information; and when the data frame achieves the destination node within the tolerant time delay, regulating the MAC layer according to a random access parameter obtained by EDCF. The embodiment of the invention can realize Qos management of a multi-hop network, prevents the network resource waste and effectively overcomes the defects that the traditional EDCF can not ensure the service fairness, and the like.

Description

technical field [0001] The present invention relates to wireless media access control (Media Access Control, MAC for short) technology in the communication field, and in particular, relates to a MAC access management method and a management unit. Background technique [0002] The standard 802.11e EDCF provides a QoS guarantee function by giving different priorities to various services and utilizing the difference in delay time and backoff time. [0003] The Enhanced distributed coordination function (EDCF for short) provides four access categories (AccessCategory, AC for short) of distinguishable and distributed access channels, corresponding to different service categories and user priorities respectively. The data frame to be transmitted is mapped to an AC according to the traffic category (Traffic Category, TC for short), and then a set of EDCF channel access parameters mapped to the AC is used to compete for a sending opportunity. The channel access parameters include C...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04W74/00H04W74/04
Inventor 李茗谢芳邵春菊
Owner CHINA MOBILE COMM GRP CO LTD
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