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Region information sharing method based on fountain coding

A technology of fountain coding and area information, which is applied in the direction of using the return channel for error prevention/detection, digital transmission system, electrical components, etc. It can solve the problems of incomplete information sending and receiving, low transmission efficiency, and data packet discarding, etc., to improve information The effect of sharing efficiency, improving reliability and availability, and reducing transmission time

Inactive Publication Date: 2016-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there is a problem with the sending and receiving of information, the data packet will be discarded or retransmitted.
This will result in incomplete sending and receiving of information or low transmission efficiency.
For information interaction within a region, there is currently no efficient and reliable method for sharing regional information

Method used

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  • Region information sharing method based on fountain coding
  • Region information sharing method based on fountain coding

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] The invention provides a regional information sharing method based on fountain coding.

[0024] The digital fountain code has the characteristics similar to fountains: when a basin of water needs to be filled and the container for receiving water is only a cup smaller than the basin, multiple cups need to go to the spring to receive water at the same time or in batches and then flow into the basin , don't care which cup the water in the basin comes from. Similarly, when some source nodes in an area send data to other nodes in the area, the receiving node only needs to consider receiving enough data required for decoding, and does not need to consider whether it is received in the complete data. which part of .

[0025] The present invention utilizes the characteristics of digital fountain coding to realize regional information sharing. The informa...

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Abstract

The invention discloses a region information sharing method based on fountain coding. Through adoption of the method provided by the invention, some regional nodes in wireless mobile communication can obtain complete data from a mobile information source node. According to the method, through utilization of digital fountain coding characteristics, region information is shared; the information source node carries out fountain coding to file data group by group according to a predetermined coding redundancy rate and sends data to regional information sink nodes. When the fountain code data packet receiving quantities of some information sink nodes in a region are sufficient, the information sink nodes request the un-received fountain code data packets from adjacent nodes in the region; and therefore, sufficient data packets are obtained for file extraction. According to the method provided by the invention, when the information of each node in the region is not received completely, the complete information is unnecessarily obtained through retransmission; the transmission time is reduced; moreover, the coding is carried out through the fountain codes; and therefore the transmission reliability and effectiveness are improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for sharing regional information based on fountain coding. Background technique [0002] The characteristic of the wireless mobile communication link is that the communication between mobile nodes may be connected or interrupted with the change of location and terrain, while the nodes in some areas will maintain a relatively stable positional relationship. When the relatively static nodes in the area broadcast data, the nodes in the area will receive incomplete data due to poor channel characteristics, occlusion and other reasons and cannot complete the complete data reception. [0003] Another feature of wireless communication is that a source node can broadcast to multiple sink nodes in an open space, and multiple nodes can receive information from the source at the same time. However, due to the relative movement of the source node, the data received by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/0057H04L1/1607
Inventor 李睿德靳松安建平卜祥元孙文静
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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