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An Information Delay Coding Method Oriented to User Information Content

A technology of information content and information delay, which is applied in the field of multi-user joint information coding, can solve problems such as multi-point to multi-point transmission, and achieve the effects of large transmission energy efficiency, high transmission resource utilization efficiency, and guaranteed delay constraints

Inactive Publication Date: 2016-03-02
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the Multimedia Broadcast / Multicast Service (MultimediaBroadcast / MulticastService) technology proposed by The 3rd Generation Partnership Project 3GPP in 2003 in the Long Term Evolution System Sixth Edition Technical Standard 23.246 (LongTermEvolutionRelease6TS23.246 Version 2.0.0), For the point-to-multipoint transmission service, the multicast service that transmits the same data from one data source to multiple users within a specific range at the same time and at the same frequency eliminates the redundancy caused by multiple transmissions of the same data from one point to one point. However, it can only realize single-point to multi-point transmission of users, not multi-point to multi-point transmission
Although this network coding method improves network throughput and bandwidth utilization, it is completely aimed at the network itself rather than the transmitted information content.

Method used

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  • An Information Delay Coding Method Oriented to User Information Content
  • An Information Delay Coding Method Oriented to User Information Content
  • An Information Delay Coding Method Oriented to User Information Content

Examples

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Embodiment 1

[0008] This embodiment is a specific example illustrating the implementation process of using the user information content-oriented information delay coding method of the present invention when considering user information content and delay requirements in a wireless network. The detailed description is as follows:

[0009] In the method of the present invention, using information delay tolerance D t To describe the delay characteristics of wireless users transmitting information content, use the information delay vector to describe the delay characteristics and information content of a single user in the wireless network, and use the information delay matrix to describe the information delay characteristics and information content of each user in the wireless network.

[0010] Information delay tolerance D t is the maximum possible delay time that users can tolerate for demand information, which can be expressed as:

[0011] D. t =(D e ) i (1)

[0012] where D e Is the...

Embodiment 2

[0019] This embodiment is a specific example to illustrate the implementation process of the user information content-oriented information delay coding method of the present invention when the information delay matrix has been obtained according to the user information content and delay requirements in the wireless network. The detailed description is as follows:

[0020] In this embodiment, the information content difference degree d is used to describe the similarity relationship between the information content that wireless users need to transmit, and the delay difference matrix is ​​recursively constructed according to the user information delay matrix, and the recursive calculation is performed based on the user information content and delay constraints. Push delay encoding.

[0021] If two information elements I 1 , I 2 If the content is completely different, the information difference degree d of the two information elements is 1; if there is no difference in the conte...

Embodiment 3

[0039] This embodiment is a specific example illustrating the implementation process of using the user information content-oriented information delay coding method of the present invention in consideration of user and service requirements in a specific wireless network. The detailed description is as follows:

[0040] In this embodiment, it is a wireless cell network with a transmission rate of 100 megabits per second (Mbps), which is divided into 4 uniform channels for M=4 users respectively. There are 5 types of information that each user needs to transmit (such as calls, Weibo and text messages, emergencies, news and pictures, videos), with different time delay tolerances, and its information delay matrix:

[0041]

[0042] where I ij (i = 1, 2, 3, 4, j = 0, 1, 2, 3, 4) only indicates the content of information, and the amount of information is determined by the transmission rate provided by each channel, all of which are 25 megabits per second (Mbps ) is mul...

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Abstract

The invention discloses an information delay encoding method for user information content, which is characterized in that the delay characteristics of wireless users transmitting information content are described by information delay tolerance, and the delay requirements and information of a single user in a wireless network are described by information delay vectors. Content, use the information delay matrix to describe the delay characteristics and information content of each user information in the wireless network, use the difference degree of information content to describe the similarity between the information content that wireless users need to transmit; according to the user information delay matrix according to the information content The difference degree recursively constructs the delay difference matrix. The entire encoding process is recursively carried out until user K obtains the complete information content difference matrix. K is the number of users minus 2, that is, M-2, and the maximum delay constraint minus 1, that is, N-1. The smaller value among them, that is, K=min{M-2, N-1}, finally transmits information corresponding to 1 item in the difference matrix.

Description

technical field [0001] The invention belongs to the field of wireless communication and network technology, and in particular relates to a method for encoding multi-user joint information in a wireless network according to user information content and delay requirements. Background technique [0002] With the development of wireless communication networks and the continuous increase of users' demands on wireless networks, data traffic in wireless communication networks will show a huge increase. According to the forecast made in the white paper "Fourth Generation Mobile Communications" (4G) released by Ericsson of Sweden in 2011, the data traffic in the wireless network will increase from 10 exabytes (ExaBytes) in 2012 to 2015 of 47 exabytes. Faced with such a huge amount of data transmission, optimizing the transmission of various types of information services has become the focus of technical improvement and enhancement. [0003] In the Multimedia Broadcast / Multicast Ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
Inventor 朱近康任海豹赵明
Owner UNIV OF SCI & TECH OF CHINA