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Computer Science > Information Theory

arXiv:1301.2427 (cs)
[Submitted on 11 Jan 2013 (v1), last revised 11 Jun 2013 (this version, v2)]

Title:Analysis of the LTE Access Reservation Protocol for Real-Time Traffic

Authors:Henning Thomsen, Nuno K. Pratas, Cedomir Stefanovic, Petar Popovski
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Abstract:LTE is increasingly seen as a system for serving real-time Machine-to-Machine (M2M) communication needs. The asynchronous M2M user access in LTE is obtained through a two-phase access reservation protocol (contention and data phase). Existing analysis related to these protocols is based on the following assumptions: (1) there are sufficient resources in the data phase for all detected contention tokens, and (2) the base station is able to detect collisions, i.e., tokens activated by multiple users. These assumptions are not always applicable to LTE - specifically, (1) due to the variable amount of available data resources caused by variable load, and (2) detection of collisions in contention phase may not be possible. All of this affects transmission of real-time M2M traffic, where data packets have to be sent within a deadline and may have only one contention opportunity. We analyze the features of the two-phase LTE reservation protocol and derive its throughput, i.e., the number of successful transmissions in the data phase, when assumptions (1) and (2) do not hold.
Comments: 4 Pages, 4 Figures, Accepted in IEEE Communication Letters on the 20th of May 2013
Subjects: Information Theory (cs.IT); Networking and Internet Architecture (cs.NI)
Cite as: arXiv:1301.2427 [cs.IT]
  (or arXiv:1301.2427v2 [cs.IT] for this version)
  https://doi.org/10.48550/arXiv.1301.2427
Related DOI: https://doi.org/10.1109/LCOMM.2013.13.130995

Submission history

From: Nuno Pratas [view email]
[v1] Fri, 11 Jan 2013 09:20:51 UTC (81 KB)
[v2] Tue, 11 Jun 2013 11:26:33 UTC (239 KB)
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Henning Thomsen
Nuno K. Pratas
Cedomir Stefanovic
Petar Popovski
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