Access method for long propagation delay wireless signal channel

A technology of propagation delay and wireless channel, applied in wireless communication, wireless network protocol, transmission system, etc., can solve the problems of reduced throughput, waste of channel resources, excessive conflicts, etc., increase packet delay and ensure fast connection Income, improve the effect of success rate
CN101111073BInactive Publication Date: 2010-11-10BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2010-11-10
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An access method along a wireless channel during the long transmission process, the junction center puts a terminal ID in a VT and a DT request queue according to the VT or the DT sign in the request group and then arranges the slot of the next frame of an upstream channel according to a distribution strategy of the channel capacity, wherein, the residual idle slot is taken as the access slot, each access slot comprises M mini-slot, the access micro-slot aggregation is divided into two common parts, such as VTs reserve and VTs, and DTs which are called as the VT subaggregation and the common subaggregation, the length of the VT subaggregation is based on a periodical dynamic alignment of the predication; the junction station combines the slot arrangement of the next frame into a confirmation group and broadcast to various terminals on a downstream channel; after receiving the confirmation group, the terminal respectively sends the request micro-group and the information group on the access micro-slot and the information slot according to the arrangement of the slot. The present invention has the advantages of the flexibility, the fastness and the high efficiency, and can reduce the packet dropout frequency of the voice and the other real-time business and improve the throughput of the data business.
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Description

Long Propagation Delay Wireless Channel Access Method technical field The invention relates to a wireless channel access method supporting voice and data integrated services in a mobile communication system with long propagation time delay. Background technique The channel access method, that is, the multiple access (ie, medium access control, MAC) method is used to solve the problem of how to share channel resources quickly, efficiently, fairly and reliably among multiple nodes or users in the communication system. It directly controls the channel resources The allocation of , has a very important impact on system performance. According to the way of channel allocation, multiple access methods are generally divided into three ways: fixed allocation, random access and on-demand allocation. The multiple access method of fixed allocation generally allocates channel resources to some nodes or all nodes of the shared channel for a long time. The channel throughput is high, b...

Claims

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