Method and device for backing off contention type slot time of media access control layer

A technology of media access control and time slot, applied in the field of Internet, can solve the problem of unfair transmission opportunities and so on

Active Publication Date: 2013-10-30
ZTE CORP
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  • Application Information

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Problems solved by technology

[0025] In view of this, the main purpose of the present invention is to provide a contention-type time slot CBTS back-off method and device of th...

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  • Method and device for backing off contention type slot time of media access control layer
  • Method and device for backing off contention type slot time of media access control layer
  • Method and device for backing off contention type slot time of media access control layer

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0060] All nodes participating in the competition in the CBTS should follow the fallback method described in the present invention within the competition window CW. In usual cases, such as figure 2 As shown, the CW follows the priority decision slot PRS. The CW length is represented by the number of idle time slot ITS. CW maximum effective value NCW max The corresponding relationship between (BSC) and the value of the back-off stage counter BSC is defined in Table 1. If no priority decision (Priority resolution, PR) signal is required to be sent, the CW should follow the INUSE signal time slot; if the INUSE time slot is not used, the CW is at the beginning of the contention time slot CBTS.

[0061] For the frames to be sent by each ...

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Abstract

The invention discloses a method and device for backing off contention type slot time of a media access control layer. According to the scheme, the method adopted by the device is achieved based on a BC and a BSC, the device is applied to nodes participating in the contention in a CBTS, and after the contention nodes successfully transmit a frame inside a CW of the current CBTS, the BSC is subtracted by X progressively, wherein X is a positive integer. When the contention nodes detect that other nodes in the CW of the current CBTS transmit a frame, the BSC is subtracted by Y progressively, wherein Y is the positive integer. By means of the method and device, the sending opportunities can be increased in the subsequent contention for nodes not having the opportunity to be sent, and meanwhile the number of parameters in the current back-off method is reduced.

Description

technical field [0001] The invention relates to the technical field of the Internet, in particular to a contention-type time slot CBTS back-off method and device of a media access control MAC layer. Background technique [0002] G.hn is the latest ITU-T home network standard, which specifies the internal networking technology of home user networks based on power lines, telephone lines, and coaxial cables. Media access should be scheduled and managed through continuous media access control (Medium Access Control, MAC) layer cycle. Each MAC cycle is divided into a plurality of time intervals; one or more time intervals are used for domain management, wherein at least one time interval is allocated to the domain master node for transmission of media access planning MAP (Media Access Plan, Media Access Plan )(Such as figure 1 description); other time intervals are allocated to different nodes or node groups as TXOP (transmission opportunity, sending opportunity) for data trans...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/28
Inventor 陈武许爱军张伟良臧美燕王小军张磊耿丹
Owner ZTE CORP
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