Wireless network retransmission algorithm of intelligent meter reading system
A wireless network and intelligent meter reading technology, applied in the fields of wireless meter reading technology, network, and wireless transmission technology, can solve problems such as failure, link quality impact, node movement, etc., to reduce the probability of data transmission failure and achieve reliability. , the effect of good universality
Inactive Publication Date: 2014-08-27
MICROCYBER CORP
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Problems solved by technology
[0004] (1) Influence of link quality
[0005] The wireless link of the network is an open and lossy propagation medium, and there are multipath fading and shadow effects, which make the network transmission error rate higher
[0006] (2) Data conflict interference
[0009] Nodes die or transmission paths fail due to energy exhaustion, node movement, or external damage
Method used
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[0034] Below with the accompanying drawings Figure 1-5 The present invention is described in further detail.
[0035] figure 1 It is a schematic diagram of the TDMA mechanism. The TDMA mechanism divides the network time axis into superframes of a certain length, and each superframe is divided into several time slots;
[0036] Each node in the network is assigned a certain number of time slots to receive or send information within a superframe, and each network node has precise timing, and each data sending and receiving node must be completed within a single time slot, otherwise it is considered communication fail.
[0037] figure 2 In a sending or receiving time slot, the action that the receiver and sender of the data should perform, as well as the time window of each action in the time slot, the normal communication between nodes means that the window can match the windows of the sending and receiving parties.
[0038] image 3 It is the transmission process of the A...
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The invention relates to the field of intelligent meter reading and wireless communicating, and particularly discloses a wireless network retransmission algorithm of an intelligent meter reading system. The algorithm serves as the main part of a wireless network transmission control mechanism and is used for guaranteeing the transmission efficiency of the network. The wireless network retransmission algorithm is used for solving the problem of data packet transmission losing, and a receiving end can acquire complete and effective data information. According to the wireless network retransmission algorithm, the transmission control problem of the wireless communication network is studied, and the importance of the retransmission algorithm on improving the reliability of the network is analyzed. The wireless network retransmission algorithm has the advantages of being simple, high in operability, obvious in reliability improvement and the like. By means of the experiment test, the average successful transmission rate of a data package is obviously improved based on the algorithm.
Description
technical field [0001] The invention relates to the fields of wireless meter reading technology, wireless transmission technology and network technology, in particular to a wireless network retransmission algorithm of an intelligent meter reading system. Background technique [0002] With the development of control, computer, communication, network and other technologies, the field of information exchange and communication is rapidly covering from field equipment to various application fields, and the wireless technology that emerged at the beginning of this century has triggered a major change in the traditional industrial measurement and control mode. Wireless The network is developed from the emerging wireless sensor network, which has the characteristics of low cost, low energy consumption, and high flexibility. It has become another research hotspot after the field bus. Now the western industrial powers represented by the United States and Germany have invested heavily ...
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IPC IPC(8): H04L1/16
Inventor 王宏李世兴杨祖业李勇王进超
Owner MICROCYBER CORP