TY - JOUR
T1 - Analysis of the LTE Access Reservation Protocol for Real-Time Traffic
AU - Thomsen, Henning
AU - Kiilerich Pratas, Nuno
AU - Stefanovic, Cedomir
AU - Popovski, Petar
PY - 2013
Y1 - 2013
N2 - 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 asses its performance, when assumptions (1) and (2) do not hold.
AB - 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 asses its performance, when assumptions (1) and (2) do not hold.
KW - Access reservation protocols
KW - LTE
KW - M2M communications
U2 - 10.1109/LCOMM.2013.060513.130995
DO - 10.1109/LCOMM.2013.060513.130995
M3 - Journal article
SN - 1089-7798
VL - 17
SP - 1616
EP - 1619
JO - I E E E Communications Letters
JF - I E E E Communications Letters
IS - 8
ER -