Energy-delay tradeoffs for data collection in TDMA-based sensor networks

Shuguang Cui, Ritesh Madan, Andrea Goldsmith, Sanjay Lall

Research output: Contribution to journalConference articlepeer-review

54 Scopus citations


We consider a wireless sensor network where the nodes have limited energy. We first analyze the delay performance of a transmission scheme based on time division multiple access (TDMA). We propose a simple link scheduling algorithm to find the minimum-delay schedule given the slot lengths for all the links. We then combine these results with our previous work on energy-optimal cross-layer design to minimize the delay in transferring a fixed number of bits from the source nodes to the sink, in an energy-constrained manner. We also study the tradeoff between the total energy consumption and delay. Pareto-optimal energy-delay curves are computed by solving a series of convex optimization problems where each objective function is a weighted sum of the delay and the total energy consumption. The computation is done for networks with and without link adaptation capabilities.

Original languageEnglish (US)
Pages (from-to)3278-3284
Number of pages7
JournalIEEE International Conference on Communications
StatePublished - 2005
Externally publishedYes
Event2005 IEEE International Conference on Communications, ICC 2005 - Seoul, Korea, Republic of
Duration: May 16 2005May 20 2005

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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