Method and system for reserving channel time slot by using initial access node

Abstract

The invention discloses a method and system for reserving a channel time slot by using an initial access node. The method comprises the following steps that: a first node receives and analyzes frame information transmitted by a node having a reserved channel time slot within a first set time interval when a first super-frame and a second super-frame start, thus obtaining complete current channel time slot occupation status; and an idle time slot is selected to serve as a reserved time slot based on the obtained complete current channel time slot occupation status. In the invention, in consideration of the self receiving processing time delay of the first node, the first set time interval when the second super-frame starts is added on the base of the first super-frame to jointly receive and analyze frame information transmitted by the node having the reserved channel time slot. Therefore, by using the invention, resource selection collision caused by the situation that time slot reservation is carried out when frame information of all nodes of a hop cluster is not completely analyzed due to self processing time delay of an initial access node can be effectively avoided, thus channel resources can be reasonably utilized.

Description

technical field [0001] The invention relates to the technical field of code division multiple access, in particular to a method and a system for an initial access node to reserve a channel time slot. Background technique [0002] Code division multiple access (Time Division Multiple Access, TDMA) technology divides time into periodic frames, and each frame is divided into several time slots. Under the condition of timing and synchronization, the base station can separately The signals of each mobile terminal are received in the middle without interference. At the same time, the signals sent by the base station to multiple mobile terminals are arranged in a predetermined time slot for transmission in sequence. As long as each mobile terminal receives it in the designated time slot, it can send the signal sent by the base station to itself in the combined signal. Separate and receive. [0003] RR-ALOHA is a TDMA-based access and resource allocation mechanism. All nodes in a...

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Problems solved by technology

[0004] At present, RR-ALOHA only gives a theoretical frame information processing method, without considering the actual delay problem, for example, the receiving processing delay and sending processing delay of the initial access node, and the reserved channel time slot The receiving processing delay and sending processing delay of the node

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