Cross-layer QOS (Quality of Service) routing method based on node occupancy rate in wireless sensor network

A wireless sensor and occupancy technology, applied in wireless communication, electrical components, etc., can solve the problems of energy consumption, frequent occurrence, and increased delay of task transmission data.

Active Publication Date: 2012-06-27
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Not only increases the network load, but also consumes its own energy
Secondly, when there are too many parallel tasks in the network, some nodes on the optimal...

Method used

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  • Cross-layer QOS (Quality of Service) routing method based on node occupancy rate in wireless sensor network
  • Cross-layer QOS (Quality of Service) routing method based on node occupancy rate in wireless sensor network
  • Cross-layer QOS (Quality of Service) routing method based on node occupancy rate in wireless sensor network

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Embodiment Construction

[0032]The present invention will be further described below in conjunction with drawings and embodiments.

[0033] A cross-layer QOS routing method based on node occupancy in a wireless sensor network, the routing steps are as follows:

[0034] 1) The source node sends a RREQ packet message to an idle adjacent node, and if there is no idle adjacent node, sends a RREQ packet message to an adjacent node with low occupancy;

[0035] 2) After receiving the RREQ packet message, the intermediate node compares the target node address with its own routing table, if the target node address is in the routing table, then go to step 3); if the target node address is not in the routing table, then go to step 4);

[0036] 3) Send the RREQ packet message to the target node;

[0037] 4) Send a RREQ packet message to an idle adjacent node, if there is no idle adjacent node, send a RREQ packet message to an adjacent node with a low occupancy, and return to step 2);

[0038] 5) After the targe...

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Abstract

The invention provides a cross-layer QOS (Quality of Service) routing method based on a node occupancy rate in a wireless sensor network. The method comprises the following routing steps of: 1) sending RREQ (Routing Request) grouping information to adjacent idle nodes by a source node; if no adjacent idle nodes exist, sending the RREQ grouping information to the adjacent nodes with the low occupancy rate; 2) comparing a target node address with a self routing table; if the target node address is on the routing table, carrying out step 3); otherwise, carrying out step 4); 3) sending the RREQ grouping information to the target node; 4) sending the RREQ grouping information to the adjacent idle nodes; if no adjacent idle nodes exist, sending the RREQ grouping information to the adjacent nodes with the low occupancy rate and returning back to the step 2); and 5), after receiving the RREQ grouping information by the target node, establishing a communication link. According to the invention, the selection of the nodes is controlled by the node occupancy rate; in a route inquiring process, the nodes at a transmission state are bypassed, so that the queuing time delay is reduced.

Description

technical field [0001] The invention relates to a routing method, in particular to a routing method based on node occupancy. Background technique [0002] Wireless sensor network involves many interdisciplinary hot fields such as microcomputer electronic system technology, modern network technology, wireless communication technology, and sensor technology. In 2003, the US "Business Weekly" discussed in a special edition, listing wireless sensor networks as the first emerging technology in the future. The US "Defense Today" even believes that the application and development of wireless sensor networks will cause an epoch-making change. In 2004, "IEEE Spectrum" magazine focused on the future of wireless sensor networks, and foreign developed countries started research on wireless sensor networks very early. For example, the United States proposed the concept of "smart dust" in 1998 to monitor the enemy. Conducted research including REMBASS, CEC, SensorIT, SmartDust, WINS an...

Claims

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Application Information

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IPC IPC(8): H04W40/04H04W40/24
Inventor 尚凤军刘鹏
Owner CHONGQING UNIV OF POSTS & TELECOMM
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