Proposal for Context-Aware Information Delivery and Personal Communication Network Architectures with Preliminary Evaluations of Their Performance

Eiji KAMIOKA  Shigeki YAMADA  Takako SANDA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E87-B    No.9    pp.2672-2681
Publication Date: 2004/09/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
Keyword: 
UMTS,  mobile network,  WLAN,  ubiquitous computing,  context awareness,  

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Summary: 
This paper proposes two types of network architectures using UMTS Release 5 architecture and wireless LAN suitable for context-aware information delivery and personal communication services, and it reports on preliminary evaluations of their performance. The first type of network architecture is the NCA (network-centric architecture) and the second is the ECA (end-user-centric architecture). The two architectures are modeled with a queuing network and their response times are compared through theoretical analysis and simulation. The results indicate that with low-performance servers, the response times of the ECA are generally shorter or almost the same as those of the NCA. However with high-performance servers, the response times of the NCA are generally shorter except during high server utilization.