Distribution caching method and device of cached data

Abstract

The invention provides a distribution caching method and device of wireless access network cached data. Caches for storing hot contents are allocated in a plurality of base stations in a distributed mode. The distribution caching method includes the steps that the first base station receives a request of a user device for accessing a packet domain service; if the packet domain service is cached in the first base station, the first base station sends the packet domain service to the user device; if the packet domain service is not cached in the first base station, the first base station obtains position information of the cached packet domain service from a cached content list or signed content list or preheated content list maintained by heat information synchronization nodes; the first base station obtains the packet domain service from the second base station or a service provider corresponding to the position information, and the obtained packet domain service is sent to the user device through the first base station. According to the distribution caching method and device, the technical problem that inter-network cached data sharing cannot be achieved in the prior art is solved, and the transmission bandwidth of an IUB can be saved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and device for caching distributed caching of data. Background technique [0002] In a Universal Mobile Telecommunications System (UMTS, Universal Mobile Telecommunications System), a cache memory (Cache) may be deployed in a Radio Network Controller (RNC, Radio Network Controller) or in a base station (Node B). [0003] If it is deployed in the RNC, it is necessary to deploy local storage media and heat information on the RNC. At the same time, the RNC parses the application layer data packets and locally caches the content that meets the cache decision conditions. The RNC is responsible for maintaining the cached content and the heat that has not reached the threshold. content, but resource popularity information may also be cached later. The capacity of the local storage medium deployed by the RNC is the maximum capacity of the Cache. Among th...

AI Technical Summary

Problems solved by technology

However, because the NodeB is closer to the edge of the network, the number of user equipment covered by a single NodeB is limited, and the hit rate is low, so it is only suitable for indoor coverage and low mobility scenarios

In addition, user devices covered by different NodeBs may access the same hotspot content, causing the same hotspot content to be cached in multiple NodeBs, causing unified content to occupy the cache resources of multiple NodeBs

[0005] During the research and practice of the prior art, the inventors of the present invention found that, in the existing implementation, regardless of whether the Cache is deployed on the RNC or the NodeB, the Cache information is managed inside a single network element, and a single network element The storage space that can be mounted is limited

At the same time, if the Cache is deployed on the RNC, it is not conducive to smooth upgrade to LTE, nor can it save the transmission bandwidth of the IUB port; if it is deployed on the NodeB, due to the limited number of covered user equipment, the hit rate is low, and it is only suitable for indoor coverage and low mobility Scenarios where different NodeBs may cache the same resource repeatedly, which cannot be shared within the network

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