Multi-channel multi-interface wireless network coding-decoding method based on ad hoc ondemand distance vector routing (AODV) protocol
A coding and decoding method and wireless network technology, applied in the field of multi-channel and multi-interface wireless network coding and decoding, can solve problems such as wasting spectrum resources, achieve the effect of improving network performance, increasing throughput, and increasing coding opportunities
Inactive Publication Date: 2015-07-15
TIANJIN UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The standards used in Ad-hoc networks provide multiple channels. However, in order to ensure the reliability of communication between adjacent nodes in traditional networks, single-channel and single-interface are often used, which greatly wastes spectrum resources.
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
[0031] Attached below Figure 1-3 Examples of the present invention will be described.
[0032] 1) In order to adapt to the network coding based on the AODV protocol, the format of the data packet under the AODV protocol needs to be improved. The data packet is divided into two types, one is the original data packet, and the other is the encoded packet. In each data packet Add some information after the packet type (type) entry, such as image 3 shown, including the following parts:
[0033] (1) Packet sequence number (seq_num): the sequence number of the data packet. Each node contains a counter, and when a node sends a data packet, it attaches a sequence number to the data packet. Together with the source IP, the packet serial number is used as the unique identifier of the data packet. The package serial number occupies an entry alone;
[0034] (2) Packet timestamp (timestamp): the sending time of the data packet. When a node sends a data packet, it will attach a time ...
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 relates to a multi-channel multi-interface wireless network coding-decoding method based on an ad hoc ondemand distance vector routing (AODV) protocol. The method comprises the steps that the formats of data packages of the AODV protocol are improved; each node in the network randomly selects a working channel of a fixed interface or a switchable interface; in the process of data package transmission, the node on each path judges whether self is a node having a coding opportunity according to a coding rule, if a judgment result shows that the node has the coding opportunity, the node encodes a plurality of received data packages, and then sends the encoded data packages to a next-hop node of one encoded data package, and next-hop nodes of other encoded data packages monitors through an opportunity so as to obtain the encoded data packages; if a judgment result shows that the node has no coding opportunity, the node only sends the data package to the next-hop node. The method can increase the network coding-decoding opportunity and improve the network throughput.
Description
technical field [0001] The invention proposes a multi-channel multi-interface wireless network encoding and decoding method based on the AODV protocol. Background technique [0002] With the popularity of electronic products such as smartphones and tablet computers, wireless mobile communication technology has highlighted its broad market prospects and development potential, and how to optimize the wireless network structure and improve frequency band utilization is a key point in this type of technology. Coding technology is a new idea proposed to solve this problem. [0003] In a network that performs network coding, each forwarding node not only forwards the data packet, but also encodes it first if the conditions are met. Studies have shown that network coding technology can improve network throughput, reduce transmission times, reduce average transmission delay, and enhance network robustness. However, the current network coding research is still mainly in the theoret...
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 Applications(China)
IPC IPC(8): H04L29/06H04L1/00H04W40/02
Inventor 金志刚王炳鉴罗咏梅
Owner TIANJIN UNIV