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Multi-access scheduling method based on directional antenna

A directional antenna and scheduling method technology, applied in wireless communication, network topology, electrical components and other directions, can solve the problem of not being able to know the node ID, unable to judge the multiplexing of multiple nodes time slot, etc., to improve the degree of spatial reuse, The effect of increasing network capacity

Pending Publication Date: 2022-07-01
BEIJING JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the public time slot table only uses one bit 1 or 0 to indicate whether the current time slot is occupied, and cannot know the ID of the node occupied by the current time slot, nor can it judge whether the current time slot can realize multiple nodes for time slot multiplexing

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  • Multi-access scheduling method based on directional antenna
  • Multi-access scheduling method based on directional antenna
  • Multi-access scheduling method based on directional antenna

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Embodiment Construction

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0024] In order to illustrate the present invention more clearly, the present invention will be further described below with reference to the preferred embodiments and accompanying drawings.

[0025] A multiple access scheduling method based on a directional antenna of the present invention, on the basis of the multiple access protocol of the omnidirectional distributed wireless ad hoc network using the reservation mechanism, adopts the mode of periodic exchange of scheduling information units to perform resource scheduling. Periodic interactive control messages constantly update the local scheduling information list; when a node authorizes time slots, it traverses the local scheduling information list to select an idle time slot or a time slot that meets the multiplexing conditions for authorization, realizin...

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Abstract

The invention discloses a multi-access scheduling method based on a directional antenna, which is characterized in that on the basis of a multi-access protocol of an omnidirectional distributed wireless ad hoc network adopting a reservation mechanism, resource scheduling is carried out by adopting a mode of periodically interacting scheduling information units, and nodes continuously update a local scheduling information linked list through periodic interaction control messages; and when the node performs time slot authorization, selecting an idle time slot or a time slot meeting a multiplexing condition to perform authorization by traversing a local scheduling information linked list, thereby realizing multiplexing of the data time slot. According to the invention, resource scheduling is carried out by periodically interacting scheduling information units. And the nodes continuously update the local scheduling information linked list through periodic interaction control messages. When resource authorization is carried out by an authorization node, authorization can be carried out only by traversing a local scheduling information linked list to select an idle time slot or meeting a multiplexing condition. The multiplexing of data time slots is realized, the spatial multiplexing degree of the distributed wireless ad hoc network is improved, and the network capacity is further improved.

Description

technical field [0001] The present application belongs to the technical field of wireless communication, and more particularly, relates to a directional antenna-based multiple access scheduling method applied to a distributed wireless ad hoc network. Background technique [0002] In recent years, wireless ad hoc networks have been widely used in military tactical networks and emergency rescue networks due to the advantages of flexible networking, strong survivability, rapid deployment and low system cost. At present, most basic wireless ad hoc networks use omnidirectional antennas for communication. Compared with omnidirectional antennas, directional antennas have high transmit and receive gains in some specified directions, while in other directions, their transmit and receive gains can be very small, or even zero under ideal conditions. The directional antenna improves the utilization rate of radiated power, which can increase the transmission distance and increase the da...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W84/18
CPCH04W72/0446H04W84/18
Inventor 李旭杨明强梁亚楠秦瑞艳
Owner BEIJING JIAOTONG UNIV
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