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A low-power-consumption distributed medium access control method based on TDMA

A medium access control, distributed technology, applied in the field of communication, can solve the problems of reducing the success rate of data output, not suitable for mobility, reducing control information, etc., to improve accuracy, reduce the number of listening time slots, overcome data lost effect

Active Publication Date: 2019-05-03
XIDIAN UNIV
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Problems solved by technology

In terms of time slot allocation and selection, the TRAMA protocol chooses a distributed election algorithm, which reduces the transmission of control information and avoids conflicts. However, it is suitable for non-mobility or low mobility scenarios and is not very Suitable for networks with high mobility, otherwise it will reduce the success rate of data output and increase power consumption

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  • A low-power-consumption distributed medium access control method based on TDMA
  • A low-power-consumption distributed medium access control method based on TDMA
  • A low-power-consumption distributed medium access control method based on TDMA

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Embodiment Construction

[0044] The implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] refer to figure 1 , the specific implementation of this example is as follows:

[0046] Step 1. Determine whether there is a known network:

[0047] The known network indicates that there are nodes that have already built the network, and the control information transmitted by the network node is figure 2 Defined sets of control frames and scheduling frames. In order to avoid link conflicts caused by two networks in the same space, a new node needs to know whether there is a known network when it is powered on. The judgment is as follows:

[0048] Judging whether the collective control frame is detected within the maximum period duration: if yes, then select the access time slot and temporary superior node during the access period according to the collective control frame, and record the synchronization level of the control fr...

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Abstract

The invention discloses a low-power-consumption distributed medium access control method based on TDMA. The method mainly solves the problem that the energy consumption in the existing mobile ad hoc network is too high, and the implementation scheme is realized according to the scheduling of time slots and the statistical comparison of transmission data volume: when no node accesses the network, only one available network access time slot is reserved for monitoring, and when the node accesses the network, the number of available network access time slots is increased for monitoring; When the time slots of the nodes are remained, the remaining time slots of the nodes are distributed according to the actual time slot requirements of the adjacent nodes, and the next time slot distribution result is dynamically adjusted; When the data transmission quantity of the node in a period of time is lower than a set threshold value, the frequency of periodic starting of the node is reduced by increasing the period length, and the dormancy period is prolonged. According to the method, the power consumption during network operation is reduced, the residual time slots of the nodes can be accurately distributed according to the requirements of the adjacent nodes, and the method can be used for a small-scale low-flow mobile communication network.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a low-power distributed medium access control method, which can be used in small-scale and low-flow mobile communication networks. Background technique [0002] The current low-power self-organizing network MAC protocol mainly focuses on contention-based protocols and scheduling-based protocols. The scheduling-based protocols are mainly TDMA-based protocols. Compared with the contention-based protocol, the scheduling-based protocol has the advantage of no conflict and no collision, which is a current research hotspot. However, the scheduling-based protocol will generate additional control overhead, which deserves attention. In addition, comparing these protocols, no matter from node access and traffic adaptive link allocation, or from the aspects of fairness of data transmission and sleep cycle, there is room for improvement. Therefore, a more energy-efficient MAC pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W72/08H04W74/08H04W72/54
CPCY02D30/70
Inventor 史琰杨志明盛敏仲伟慧宋文强刘俊宇
Owner XIDIAN UNIV
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