Content cache management method based on base station cooperation

Abstract

The invention relates to a content cache management method based on base station cooperation, and belongs to the technical field of wireless communication. The method comprises the following steps: requesting a user to initiate a content request message to an associated base station; after receiving the content request message, inquiring a base station cache list, and if the request content is cached in the cache list of the associated base station, the associated base station sending the request content to a request user and updates the base station cache list; if the request content is not cached in the cache list of the associated base station, the associated base station updating an uncached content request information table and obtaining the request content through a core network content server / cooperative base station; and if the associated base station caches the request content, updating the associated base station cache list / uncached content request information table. According to the method, effective management of the base station cache can be realized, the hit rate of the cache content of the heterogeneous network can be improved, and the average access delay of the system is reduced.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a content cache management method based on base station cooperation. Background technique [0002] The rapid development of Internet technology and mobile devices such as smartphones has met the diverse needs of users to access multimedia content anytime and anywhere, and has also led to an explosive increase in data traffic. In order to provide users with required content (such as news, video, music) more efficiently and reduce the backhaul pressure from the core network to the base station, wireless caching technology can be used to place some of the content required by users on a near-client device with caching capabilities. , such as a cellular base station (Base Station, BS), etc., to reduce the time delay and energy consumption of users requesting content. [0003] In recent years, there have been researches on the caching technology of cellular networks. For ...

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Problems solved by technology

[0004] Although the existing methods can solve some of the existing problems to a certain extent, however, the existing research rarely considers the caching method of cellular heterogeneous network content that supports base station cooperation, resulting in limited network performance.

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