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Mobile Ad Hoc network directional time-division access protocol based on neighbor beam alignment and tracking

A technology for accessing protocols and networks, applied in network topology, time-division multiplexing systems, electrical components, etc., can solve problems affecting network throughput performance, etc.

Inactive Publication Date: 2016-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the node cannot maintain and track the discovered neighbor nodes, it may need to frequently initiate the beam alignment process, which seriously affects the network throughput performance

Method used

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  • Mobile Ad Hoc network directional time-division access protocol based on neighbor beam alignment and tracking
  • Mobile Ad Hoc network directional time-division access protocol based on neighbor beam alignment and tracking
  • Mobile Ad Hoc network directional time-division access protocol based on neighbor beam alignment and tracking

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0024] In the following description, this specification abbreviates the wireless adhoc network directional time division access protocol proposed by the present invention as AT-MAC (Neighbor Beam Alignment and Tracking MAC Protocol). The specific implementation steps of AT-MAC are given below:

[0025] Step 1: Define the network time frame structure.

[0026] as attached figure 1 As shown, AT-MAC divides the time axis synchronization of the entire network nodes into a series of continuous network time frames, and each network time frame consists of four consecutive stages in time: neighbor discovery, neighbor tracking, data reservation and data transmission. The phases of neighbor discovery, neighbor tracking and data reservation include a series of sub-slots respectively, and the number of sub-slots in the data reservation phase is the sam...

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Abstract

The invention discloses a mobile Ad Hoc network directional time-division access protocol based on neighbor beam alignment and tracking. According to the protocol, the time axis of a node is synchronously divided into a series of continuous network time frames, and each network time frame includes a neighbor discovery phase, a neighbor tracking phase, a data reservation phase and a data transmission phase. In the neighbor discovery phase, a node implements beam alignment and completes neighbor discovery through a neighbor discovery mechanism based on random beam switching and a three-way handshaking strategy. In the neighbor tracking phase, the node tracks a neighbor node by controlling frame interaction. In the data reservation phase, the node completes time slot division and allocation of the data transmission phase according to the transmission need. In the data transmission phase, the node completes directional data transmission. Meanwhile, a distribution function of disconnection time of the link between nodes is obtained through analysis by building a node motion model, and the optimal time frame length is set according to the function to achieve optimal network throughput performance. Simulation results in EXata prove the effectiveness of the protocol.

Description

technical field [0001] The invention belongs to the field of wireless networks, in particular to a mobile adhoc network directional time-division access protocol based on neighbor beam alignment and tracking. Background technique [0002] Due to the characteristics of fast networking, flexibility, high reliability, and strong invulnerability, mobile adhoc networks are widely used in civilian and military fields. Network throughput is one of the important indicators to evaluate the performance of mobile adhoc network, and even evaluate its existence value. With the application of wireless ad hoc networking technology in more and more fields, improving network throughput performance and providing better service for users in the network has become the focus of mobile ad hoc network research. In a traditional mobile adhoc network, nodes share wireless channel resources under the control of a Medium Access Control (MAC) protocol, and complete data transmission through an omnidir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W74/08H04W72/04H04J3/06
CPCH04J3/0652H04W72/0446H04W74/085H04W74/0891H04W84/18
Inventor 蔡圣所雷磊王夏楠张雅静徐亚楠徐海楼黄太彬
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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