Method for rapidly decomposing time gap conflicts in distributed type TDMA protocol

Abstract

The invention discloses a method for rapidly decomposing time gap conflicts in a distributed type TDMA protocol. The method mainly solves the problem that in an Ad Hoc network, due to the time gap conflicts, the transmission efficiency and channel utilization rate are decreased. The method includes the steps that firstly, a node has access to a network and is marked with a time gap type; secondly, when receiving a correct packet during a receiving time gap, the node calculates prediction parameters according to the physical layer parameters of the packet and conducts conflict forecasting decomposition if the prediction parameters meet the conflict prediction conditions; thirdly, when receiving a wrong packet during the receiving time gap, the node conducts conflict decomposition if physical layer parameters of the packet meet the conflict conditions; fourthly, when receiving no packet during the receiving time gap or receiving a correct packet during an idle time gap, the node renews a time gap list. The cross-layer design is introduced, and therefore the time gap conflicts are more efficiently predicted and detected, the network transmission efficiency and channel utilization rate are increased, and the method can be used for the distributed type self-organized network.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a time slot conflict decomposition method, which is applicable to the TDMA protocol in the mobile Ad Hoc network, and effectively improves the transmission performance and channel utilization rate of the network under the condition of meeting the network requirements. Background technique [0002] Ad Hoc network is a new type of wireless self-organizing network, which is different from the commonly used cellular network and wireless local area network. It is composed of a group of mobile nodes with wireless transceiver devices. The wireless network structure can be quickly established at any time and any place, so it has received more and more attention in recent years. [0003] Because the Ad Hoc network is a multi-hop network, the traditional competitive multiple access methods, such as the CSMA / CA protocol, have low channel throughput and uncontrollable acces...

AI Technical Summary

Problems solved by technology

The shortcomings of this method are: firstly, this method changes the original TDMA protocol, increases the complexity of the protocol, and does not have good portability; secondly, the CSMA-CA algorithm is used, and the information delay is too large to adapt to Ad Hoc Network with High Real-time Requirements

However, because the non-adjacent layers cannot interact, or the adjacent layers cannot interact as required, the information that the lower-layer protocol can easily obtain, the upper-layer protocol has to spend a lot of effort to obtain, which results in waste of resources and loss of information. repeat

Lack of necessary information interaction between layers, unable to optimize network performance

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