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Cache enabling user association method suitable for heterogeneous communication network

A communication network and user technology, applied in wireless communication, network planning, network traffic/resource management, etc., can solve the problems of inability to fully consider transmission performance, easy implementation and low cost, etc., to achieve easy implementation, improve network efficiency, and low cost Effect

Active Publication Date: 2021-08-17
SOUTHEAST UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a caching-enabled user association method suitable for heterogeneous communication networks, so as to solve the technical problems of user association that cannot fully consider transmission performance, easy implementation, and low cost in existing solutions

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  • Cache enabling user association method suitable for heterogeneous communication network
  • Cache enabling user association method suitable for heterogeneous communication network
  • Cache enabling user association method suitable for heterogeneous communication network

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Embodiment Construction

[0034] In order to better understand the purpose, structure and function of the present invention, a caching-enabled user association method applicable to heterogeneous communication networks of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] For heterogeneous wireless communication networks operating in sub-6G and millimeter-wave frequency bands, the two-dimensional plane Poisson point process is used to model the positions of sub-6G and millimeter-wave base stations respectively, and their densities are represented by λ 1 and lambda 2 It means that assuming that a user is located at the origin of the coordinates (according to the relevant theorem of random geometry, the user can represent any user), the central server and the sub-6G base station are connected by optical fibers, and the content of the entire system is divided into J and the same size sub content. Assuming that the content popularity obey...

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Abstract

The invention discloses a cache enabling user association method suitable for a heterogeneous communication network, and the method comprises the following steps: a millimeter wave base station caches the most popular content, and a sub-6G base station caches a part of the most popular content and a part of the most popular content except the cached content of the millimeter wave base station. When the two base stations cache the content required by the user, the user firstly associates to the millimeter wave base station which meets the signal-to-noise ratio condition and has the strongest signal, otherwise, a plurality of sub-6G base stations with the strongest signal perform joint transmission; when only the sub-6G base station caches the content required by the user, a plurality of sub-6G base stations with the strongest signals carry out joint transmission; and in other cases, the sub-6G base station with the strongest signal retrieves the content from the central server through the optical fiber and transmits the content to the user. According to the method, caching and joint transmission technologies are combined, and the optimal design of related parameters is provided, so that the network performance is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication networks, and in particular relates to a caching-enabled user association method suitable for heterogeneous communication networks. Background technique [0002] With massive multimedia applications and large-scale device access, the fifth-generation wireless communication network (5G) technology that currently generally uses the sub-6G frequency band will face greater transmission capacity and bandwidth pressure in the future. Studies have shown that in the scenario of dealing with massive content, since the content usually has specific statistical characteristics, deploying storage at the base station and utilizing the statistical characteristics of the content to cache some content in advance can increase the user's content acquisition speed, thereby improving transmission performance. Moreover, the decreasing cost of memory also makes this solution more cost-effective. In order...

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Application Information

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IPC IPC(8): H04W16/18H04W28/06H04W28/14
CPCH04W16/18H04W28/14H04W28/06
Inventor 黄永明林鸿鑫张铖朱建月
Owner SOUTHEAST UNIV
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