GroCoca: group-based peer-to-peer cooperative caching in mobile environment

— In a mobile cooperative caching environment, we observe the need for cooperating peers to cache useful data items together, so as to improve cache hit from peers. This could be achieved by capturing the data requirement of individual peers in conjunction with their mobility pattern, for which we realized via a GROup-based COoperative CAching scheme (GroCoca). In GroCoca, we define a tightly-coupled group (TCG) as a collection of peers that possess similar mobility pattern and display similar data affinity. A family of algorithms is proposed to discover and maintain all TCGs dynamically. Furthermore, two cooperative cache management protocols, namely, cooperative cache admission control and replacement, are designed to control data replicas and improve data accessibility in TCGs. A cache signature scheme is also adopted in GroCoca in order to provide information for the mobile clients to determine whether their TCG members are likely caching their desired data items and to perform...

• Type: Journal
• Year: 2007
• Where: JSAC
• Authors: Chi-Yin Chow, Hong Va Leong, Alvin T. S. Chan
• Keywords: Cache, Cooperative Caching, COoperative CAching Scheme, JSAC 2006, JSAC 2007