The concept of preamble-priority awareness in downlink control signaling scheduling was recently proposed to provide Quality of Service (QoS) differentiation in the Random Access (RA) procedure of the LTE/LTE-Advanced technology. This approach employs the information about preamble-priority levels used in the the initial phase of the RA procedure to schedule random access response messages. In this paper, we extend the application of this concept to the scheduling of other control messages and analyze its impact when the RACH Resource Separation (RRS) scheme and the traditional RA scheme with both the contention-free and the contention-based modes are used under heavily-loaded, highly-synchronized Machine-Type Communications (MTC) scenarios. Our results derived via extensive simulations show that the preamble-priority-aware concept provides QoS differentiation to users utilizing contention-free preambles. Furthermore, this concept helps to achieve the goal of isolation between traditional LTE users and MTC devices when the RRS scheme is used.
Impact of Preamble-Priority-Aware Downlink Control Signaling Scheduling on LTE/LTE-A Network Performance
2017-09-01
222408 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
British Library Conference Proceedings | 2009
|Online Contents | 2011
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