Link Detection Method Based on Wireless Sensor Network
A wireless sensor and link detection technology, applied in the field of wireless networks, can solve problems such as poor channel quality
Active Publication Date: 2016-01-20
TSINGHUA UNIV
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] According to the above description, it can be seen that the existing technology only detects links that are frequently used in wireless sensor networks, and assumes that there is only one faulty link in the detection; however, in practical applications, multiple link faults exist at the same time. It is very common, and most of the existing unused links (such as links that are not commonly used due to poor channel quality) still play a very important role in wireless sensor networks. Based on this, the existing technology really needs to be improved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0043] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0044] Network broadcasting is an essential basic application in wireless sensor networks. It starts from the base station, and each node in the network continues to broadcast after receiving the broadcast packet to ensure the broadcast range; in order to avoid flooding and repeated broadcasting, different The application will have a specific broadcast stop strategy; this embodiment is based on the broadcast application of the wireless sensor network, and proposes a link detection method based on the wireless sensor network, such as figure 1 shown, including the following steps:
[0045] The base station broadcasts probe packets in the wireless sensor network;
[0046] A...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a wireless sensor network-based link detection method, which comprises the following steps: broadcasting probe packets by a base station in a wireless sensor network; recording hop values of all probe packets which are expected to be received and actually received by each node and the total number of the probe packets corresponding to each hop value to form a plurality of expected reports and recovered reports; comparing whether the expected report and the recovered port corresponding to each node are the same; if the expected report and the recovered port corresponding to each node are different, grouping adjacent nodes of each node respectively and converting topological information between each recovered report and each node into a plurality of basic facts of a DLP (Disjunctive Logic Programming) system; and setting a conversion rule and limitation of the DLP system, selecting a part of basic facts as input of the DLP system, deducing all potential facts, screening the potential facts through the limitation of the DLP system and outputting a fault link set. According to the method, the detection of the potential fault link in the network is realized.
Description
technical field [0001] The invention relates to the field of wireless networks, in particular to a link detection method based on a wireless sensor network. Background technique [0002] The impact of stable link transmission on wireless sensor networks is crucial. The damage of a key link may cause network edge nodes to be unable to find a suitable route to send data back to the base station; link failure may also cause local routing topology changes , resulting in network faults such as traffic congestion. Therefore, the test of wireless link quality is particularly important. [0003] In the prior art, the test of the wireless link quality is usually carried out by observing the receiving rate of the probe packet; first, according to the network topology structure between the nodes, the link strategy for the probe packet to travel around is analyzed, and the flow probe sent by the base station is used to test the wireless link quality. Based on the return status of the n...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/04H04W84/18
Inventor 马强刘克彬曹志超刘云浩
Owner TSINGHUA UNIV