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Medium access method for contention and non-contention

An access method and competitive access technology, applied in wireless communication, electrical components, data exchange through path configuration, etc., can solve problems such as difficult to guarantee QoS

Inactive Publication Date: 2006-05-31
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Likewise, the possibility of not being able to obtain access to the medium increases, making it difficult to guarantee QoS

Method used

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  • Medium access method for contention and non-contention

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Embodiment Construction

[0047] The contention and contention-free medium access methods according to the present invention will be fully described below with reference to the accompanying drawings.

[0048] FIG. 1 shows contention and contention-free medium access methods, in which a superframe with a contention period and a contention-free period according to the present invention is shown.

[0049] First, a plurality of stations and APs for broadcasting to these stations are provided in order to simultaneously satisfy contention-based and non-contention-based, and make communication modes for these contention-based coexistence. Classify the multiple sites into a first group with non-competing sites and a second group with competing sites.

[0050] Medium access between the first or second group and the AP is performed in a superframe. The superframe consists of a contention-free (or contention-free) period and a contention period. The contention-free period is the multi-poll distributed coordinati...

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Abstract

In contention and contention-free medium access methods, a first set of stations is used for no-contention and a second set of stations is used for contention. The method comprises (a) preparing a contention-free access message attempting to access a first group; (b) detecting a transmission time of a contention-free access message attempting to access a second group; (c) embedding the contention-free access message into contention access message to transmit the embedded message to at least one of the first and second groups; and (d) receiving at least one of the first and second groups a contention-free access message embedded Access messages are contended for and priority is given to either of the first and second groups to access the medium in turn. Therefore, the multi-poll distribution coordination function (MP-DCF) mechanism based on the control of polling times is shared with the commercial sites without MP-DCF modules, in order to solve the shortcomings that all sites need to have MP-DCF modules, and despite the site's The number is gradually increased to be able to maintain the throughput stably.

Description

technical field [0001] The present invention relates to a contention-free medium access method, more particularly, to a contention-free medium access method, in which the base station manages the business station (wireless communication station) according to the IEEE 802.11e standard Polling times, thereby ensuring smooth traffic and improving quality of service (QoS). Background technique [0002] In general, a wireless local area network (LAN) is a mechanism for performing communication over a network using radio waves instead of cables. As an alternative to solving various difficulties in installation, maintenance or repair, mobility, etc. caused by laying cables, wireless LANs have been formed, and due to an increase in the number of users, it is more necessary to solve these difficulties. [0003] A wireless LAN is composed of access points (hereinafter referred to as "APs") and wireless stations. The AP is a device for transmitting radio waves to enable users of a wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28
CPCH04W74/02H04W74/06H04W74/08
Inventor 崔美萝徐昌佑渔来镇罗星国
Owner SAMSUNG ELECTRONICS CO LTD
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