Self-adaptive time slot allocation method according to node density and loads in self-organizing network

Abstract

The present invention discloses a self-adaptive time slot allocation method according to node density and loads in a self-organizing network, and the method is mainly used for solving the problem that the certain delay requirement is difficult to ensure under the condition of variable node density and loads in the wireless self-organizing network. The method includes the steps as follows: 1. accessing the network by the node P and constructing a slot time table; 2. selecting the time slot by the node P; 3. judging the time slot type of the node P at the current time; 4. adjusting the occupied fixed time slot according to the node density under the condition of broadcast type time slot; 5. performing dynamic time slot ordering and release according to loads under the condition of fixed time slot so as to realize the time slot allocation. The method provides the basic data transmission ability and stable data transmission, ensures the stability of the system delay requirement, and can be used for the TDMA protocol in the mobile self-organizing network.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to an adaptive time slot allocation method, which is suitable for TDMA protocol in a mobile self-organizing network, and allocates time slots adaptively according to node density and service load, thereby ensuring stable time delay requirements . Background technique [0002] Different from the common cellular network and wireless local area network, the wireless ad hoc network consists of a group of mobile nodes with wireless transceivers, and does not require a fixed base station or control center. It is a distributed network structure and can be used at any time, A wireless network can be quickly set up anywhere, so it has received more and more attention in recent years. [0003] Because the wireless ad hoc network is a multi-hop network, the traditional competitive multiple access methods, such as carrier sense multiple access (CSMA) protocol, have low channe...

AI Technical Summary

Problems solved by technology

The shortcomings of this method are: firstly, this method needs to know the node information of the whole network to perform corresponding operations, which is difficult to realize in the wireless ad hoc network; secondly, it does not have good adaptability to the upper layer data flow, The transmission delay of the system cannot be guaranteed

[0006] One is that nodes need to collect geographic location information of neighboring nodes before selecting a time slot, which is not easy for other mobile ad hoc networks;

[0007] The second is to dynamically adjust the frame length according to the density change. It is difficult to quickly coordinate the adjustment of the surrounding nodes at the same time, and it is impossible to guarantee a stable delay requirement.

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