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Channel time slot scheduling and allocating method of wireless mobile ad hoc network

A mobile self-organization and time slot scheduling technology, applied in wireless communication, network topology, electrical components, etc., can solve the problem that the micro-slot competition mechanism is difficult to use well, and achieve fast demand response time slot allocation execution capability , improve the effective utilization rate, and the effect of efficient utilization of time slot resources

Active Publication Date: 2018-06-29
NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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Problems solved by technology

Therefore, the mini-slot competition mechanism is difficult to be well used in applications

Method used

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  • Channel time slot scheduling and allocating method of wireless mobile ad hoc network
  • Channel time slot scheduling and allocating method of wireless mobile ad hoc network
  • Channel time slot scheduling and allocating method of wireless mobile ad hoc network

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Embodiment Construction

[0018] A wireless mobile ad hoc network channel time slot scheduling and allocation method

[0019] 1. Network model

[0020] In the network, each node is equipped with only one transceiver with an omnidirectional antenna, and all nodes share a common wireless channel. The transceiver works in half-duplex mode, and the node cannot send and receive at the same time. At the same time, due to interference caused by signal superposition, the node cannot correctly receive information sent by more than one neighbor node, and at this time it is considered that a channel conflict occurs. The clocks of the entire network nodes are precisely synchronized, each node has a unique ID, and the network topology does not change significantly during the execution of the slot scheduling algorithm, that is, the topology change caused by node movement is slower than the execution speed of the scheduling algorithm. The network has a multi-hop structure. The sending node broadcasts and sends info...

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Abstract

The invention discloses a channel time slot scheduling and allocating method of a wireless mobile ad hoc network. The method comprises four stages of time slot application, conflict mediation, allocation announcement and time slot occupation, in view of the scheduling and allocating of data time slots in the (n+2)th time element, a node needs to start the time slot application in the (n)th time element, perform the conflict mediation at the end of the (n)th time element, and perform the allocation notification according to a mediation result in the (n+1)th time element, and obtain the occupation right of the corresponding time slot at the (n+2)th time element. The channel time slot scheduling and allocating method disclosed by the invention is used for solving the following problem: the node in a multi-hop network makes fast adjustment on the time slot allocation according to the requirements of the own service transmission and eliminates the conflict of the competition in the processof the time-slot allocation, the channel time slot scheduling and allocating method is applied to rapid movement of the node, the dynamic change of the network topology, distributed non-central control and other Ad hoc network scenes, and fair and efficient channel resource utilization technology is provided for network nodes to implement TDMA channel access control.

Description

technical field [0001] The invention belongs to the technical field of wireless mobile self-organizing network (Ad hoc network), and relates to a channel time slot scheduling allocation method for realizing TDMA channel access control in the Ad hoc network. Background technique [0002] Wireless Ad hoc networks are widely used in military operations, emergency rescue and disaster relief, and emergency communications. The wireless Ad hoc network does not need the support of preset fixed communication facilities, and is established by distributed system control mode, which has the advantages of rapid deployment and flexible networking. The MAC channel access control protocol design has a great impact on channel utilization and network performance. In a multi-hop wireless Adhoc network, compared with the CSMA-based channel access control protocol, the TDMA-based channel access control protocol can provide greater network capacity, maximize channel utilization in a highly dense...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/08H04W72/10H04W84/18
CPCH04W72/0446H04W84/18H04W72/543H04W72/20H04W72/542H04W72/56
Inventor 毛建兵王亚茜景中源白维学许从方
Owner NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
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