Efficient LTE Access with Collision Resolution for Massive M2M Communications

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Provided by: Cornell University
Topic: Networking
Format: PDF
LTE random access procedure performs satisfactorily in case of asynchronous, uncorrelated traffic arrivals. However, when the arrivals are correlated and arrive synchronously, the performance of the Random Access CHannel (RACH) is drastically reduced, causing a large number of devices to experience outage. In this paper, the authors propose a LTE RACH scheme tailored for delay-sensitive M2M services with synchronous traffic arrivals. The key idea is, upon detection of a RACH overload, to apply a collision resolution algorithm based on splitting trees.
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