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Token ring based Adhoc network MAC layer channel access and resource reservation method

A wireless ad-hoc network and channel access technology, which is applied in wireless communication, network traffic/resource management, electrical components, etc., can solve the problem of token waste of meaningless polling time slots, and achieve reduced conflicts and high throughput , the effect of ensuring fairness

Inactive Publication Date: 2018-11-16
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI +1
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Problems solved by technology

[0008] However, the superframe structure is divided according to the TA-MAC scheme, and there is a waste of meaningless polling slots for tokens. For example, when the nodes in area C are in T ac (T bc ) subframe does not have data sent to areaA (area B) but has data sent to area B (areaA), the token will be cycled to these nodes many times meaninglessly

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  • Token ring based Adhoc network MAC layer channel access and resource reservation method
  • Token ring based Adhoc network MAC layer channel access and resource reservation method
  • Token ring based Adhoc network MAC layer channel access and resource reservation method

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[0034] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0035] In order to solve the hidden terminal problem, the frame structure was redesigned. Divide the time slot resources in the network into superframes T f , and each superframe T f divided into T ac ,T bc ,T c and T ab Four sub-frames, such as image 3 shown. T s Indicates the minimum transmission time slot, referred to as time slot, is the time required to transmit a data packet, and the node always sends data at th...

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Abstract

The invention relates to a token ring based Adhoc network MAC layer channel access and resource reservation method. The method specifically includes: time slot resources are divided into superframes,each superframe is divided into four subframes, and the data transmission direction of each subframe is specified so as to avoid the influence of hidden terminals; and an optimization model is established, the number of time slots and the total number of time slots of each subframe are obtained through a time slot number optimization algorithm, and comparatively small end-to-end delay is obtained.

Description

technical field [0001] The invention relates to the technical field of wireless ad hoc networks, in particular to a token ring-based MAC layer channel access and resource reservation method for wireless ad hoc networks. Background technique [0002] Wireless ad hoc network, also known as Adhoc network, is composed of a group of nodes with terminal and routing functions using wireless communication. It does not rely on preset infrastructure and can be temporarily, quickly and automatically networked. It has the characteristics of distributed, self-organizing, and multi-hop transmission. Due to its advantages of flexible networking, anti-interference and low investment cost, Ad hoc network is widely used in cooperative combat communication, emergency rescue and disaster relief, field investigation, sensor network and other fields. [0003] With the development of ad hoc network technology, the ad hoc network presents a trend of diversification, complexity and systematization....

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Application Information

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IPC IPC(8): H04W28/26H04W74/06H04W74/08
CPCH04W28/26H04W74/06H04W74/0808
Inventor 易辉跃舒睿俊沈程徐景杨旸
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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