Optimal Number of Active Users for Minimizing Average Data Delivery Delay in People-Centric Urban Sensing

ShanGuo QUAN  YoungYong KIM  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E92-D   No.7   pp.1466-1469
Publication Date: 2009/07/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E92.D.1466
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Networks
Keyword: 
urban sensing,  minimum delay,  optimal number of active users,  sensor data,  CDMA,  

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Summary: 
We present a numerical analysis of the optimal number of active mobile users for minimizing average data delivery delay in intelligent people-centric urban sensing, in which context-aware mobile devices act as sensor-data carriers and sensor nodes act as data accumulators within CDMA cellular networks. In the analysis, we compute the optimal number of mobile users for different environmental conditions and then investigate the minimum average data delivery delay for this optimal number of mobile users.