Heterogeneous network joint user correlation and content cache method

A content caching and heterogeneous network technology, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as difficult to achieve comprehensive network performance optimization

Active Publication Date: 2017-05-17
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The above studies determine the optimal resource allocation strategy for the corresponding performance function based on optimization theory by modeling a specific network performance function. However, the existing research rar

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  • Heterogeneous network joint user correlation and content cache method
  • Heterogeneous network joint user correlation and content cache method

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Embodiment Construction

[0034] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] figure 1 It is a schematic diagram of a heterogeneous network scenario with a caching function. As shown in the figure, there are multiple users in the heterogeneous network, and the users are located in the network coverage areas of multiple BSs and APs. According to the user's content requirements and business service quality requirements, You can choose to establish an association with a suitable BS or AP; model the total user transmission delay as the sum of the total service transmission delay of all users, and realize the optimal strategy of joint user association and cache content allocation based on the minimization of the total user transmission delay.

[0036] figure 2 It is a schematic flow chart of the method of the present invention, as shown in the figure, the method of the present invention specifically includes the ...

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Abstract

The invention relates to a heterogeneous network joint user correlation and a content cache method. The method includes: (1) carrying out modeling on user business requirement characteristics; (2) establishing content cache variables of a cellular base station BS and a WLAN access point AP, and carrying out modeling on qualifications; (3) carrying out modeling on user correlation variables and qualifications; (4) carrying out modeling on user total transmission time delay; (5) carrying out modeling on time delay corresponding to a user access BS; (6) carrying out modeling on time delay corresponding to a user access AP; (7) carrying out modeling on time delay corresponding to user backhaul transmission at the BS or the AP; (8) carrying out modeling on user transmission data speed and qualifications; (9) on the basis of minimization of the user total transmission time delay, determining an optimizing strategy of distribution of the user correlation and cache contents. According to the method, transmission performance and user experience are effectively ensured, the content cache is individually carried out, optimal distribution of the user correlation and the cache contents are reached, and the minimization of the user total transmission time delay is achieved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to the technical field of heterogeneous network resource allocation, and relates to a heterogeneous network joint user association and content caching method. Background technique [0002] With the rapid development of computer and communication technology, user business needs are increasingly diversified, and the next-generation communication network will develop towards the trend of heterogeneity and gradually move towards interconnection. In order to meet the market demand, various wireless access technologies have appeared one after another, such as cellular network, local area network and so on. Due to the limitations of a single wireless access technology in terms of coverage and transmission rate, it cannot fully meet the business needs of different users, and the future communication network will realize the effective integration of multiple access technologie...

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Application Information

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IPC IPC(8): H04W28/06H04W28/14H04L29/08
CPCH04L67/1074H04W28/06H04W28/14H04L67/568
Inventor 陈前斌陈泓秦远征柴蓉
Owner CHONGQING UNIV OF POSTS & TELECOMM
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