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Techniques for Improving Cache Effectiveness of Caches with Low User Population

a cache and low user population technology, applied in the field of managing user traffic in a cellular network, can solve the problems of low cache effectiveness, low user population, and low cache hit ratio, and achieve the effect of improving cache effectiveness and low user population

Inactive Publication Date: 2014-02-13
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about making caches more effective in areas with low user populations in a computer network. It involves identifying a group of caches that have correlated user traffic and observing the requests for these caches. By analyzing these requests, the method predicts which items will be requested from the caches in the future and preloads them in advance. This results in faster response times for users and improved efficiency of the network.

Problems solved by technology

However, when network caches are used in a cellular network, the caching effectiveness is not very high for points in the network where the user population is low.
As a result, cache hit ratios are fairly low if a cache is implemented at a base station or in the case of high density radio access network (RAN) deployment, when a cache is implemented at a femto-cell, or at a micro-cell base station since the user population is low.
Thus, benefits of savings on bandwidth reduction, or the improvement in user experience that caching can provide are not realized in these environments.

Method used

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  • Techniques for Improving Cache Effectiveness of Caches with Low User Population
  • Techniques for Improving Cache Effectiveness of Caches with Low User Population
  • Techniques for Improving Cache Effectiveness of Caches with Low User Population

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Embodiment Construction

[0010]Provided herein are techniques for improving the effective cache hit ratio of caches which do not have a sufficiently large user population. FIG. 1 is a diagram illustrating high-level architecture of a 3G cellular network which provides the framework for the present techniques. As shown in FIG. 1, the 3G cellular network includes user equipment 102 (e.g., mobile telephones, PDAs, PCs, laptop computers, etc.) that can communicate wirelessly with radio network controllers (RNCs) 106 through a plurality of base stations 104, e.g., base stations located in cell towers, (called nodeB in currently deployed UMTS or 3GPP networks).

[0011]The 3G cellular network covers a geographical area by means of a hierarchy of cells, i.e., regions that are serviced by a base station. See FIG. 1. According to an exemplary embodiment, one or more of the base stations 104 can receive wireless transmissions from the user equipment 102 and are connected directly to a given one of the RNCs 106.

[0012]As ...

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Abstract

Techniques for improving cache effectiveness in areas with low user population are provided. In one aspect, a computer-based method for managing user traffic in a cellular network using proxy caches is provided. The method includes the following steps. A group of the proxy caches that has correlated user traffic is identified. Cache requests for each of the proxy caches in the group are observed. One or more patterns are found in the cache requests. A prediction is made as to which items will be requested from the proxy caches in the group in the future based on the one or more patterns found in the cache requests. The proxy caches in the group are pre-populated with the items.

Description

FIELD OF THE INVENTION[0001]The present invention relates to managing user traffic in a cellular network and more particularly, to techniques for improving cache effectiveness in areas with low user population.BACKGROUND OF THE INVENTION[0002]Caching is used to save the bandwidth on congested nodes in cellular networks. The cache is generally located near the base station for saving bandwidth.[0003]However, when network caches are used in a cellular network, the caching effectiveness is not very high for points in the network where the user population is low. In general, caching effectiveness increases in direct proportion to the size of the user population. As a result, cache hit ratios are fairly low if a cache is implemented at a base station or in the case of high density radio access network (RAN) deployment, when a cache is implemented at a femto-cell, or at a micro-cell base station since the user population is low. Thus, benefits of savings on bandwidth reduction, or the imp...

Claims

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Application Information

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IPC IPC(8): H04W24/00
CPCH04L67/568
Inventor ANTHONY, JR., BRUCE O.VERMA, DINESH C.
Owner IBM CORP