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Accommodating Machine-to-Machine applications and their requirements is oneof the challenges on the way from LTE towards 5G networks. The envisioned highdensity of devices, alongside with their sporadic and synchronized transmissionpatterns, might create signaling storms and overload in the current LTEnetwork. Here, we address the notorious random access (RA) challenge, namely,scalability of the radio link connection establishment protocol in LTEnetworks. We revisit the binary countdown technique for contention resolution(BCCR), and apply it to the LTE RA procedure. We analytically investigate theperformance gains and trade-offs of applying BCCR in LTE. We furthersimulatively compare BCCR RA with the state-of-the-art RA techniques, anddemonstrate its advantages in terms of delay and throughput.

Enhancing Cellular M2M Random Access with Binary Countdown Contention Resolution