Enhanced-Power Saving Semi-Persistent Scheduler for VoLTE in LTE-Advanced

Generalized performance analysis and optimization of enhanced power saving semi persistent scheduler

“…brought about by SPS. In this regard, our contributions summarized above can also be considered as useful since they aid us in obtaining a significantly more crucial and detailed insight into the working of E-PS-SPS as compared to the work in [8]. To the best of our knowledge, this kind of a work is missing in the literature.…”

“…PS-SPS introduces a novel modification to the traditional semi-persistent scheduler (T-SPS) resource allocation rule for the VoLTE packets in the downlink of a LTE cell. The authors subsequently proposed enhanced-PS-SPS (E-PS-SPS) which further improved the resource allocation rule for downlink VoLTE packets to increase the energy savings of the LTE eNodeB [8]. The authors also showed that the capacity 1 of E-PS-SPS is better than PS-SPS and upper bounds the capacity of T-SPS.…”

“…This is done in order to simplify its implementation and computational complexity. However, the performance analysis in [8] was done with two very strong assumptions. Firstly, same downlink mean signal-to-noise ratio (SNR) was assumed for every user despite users' differing distance and shadowing from the eNodeB which should actually result in their downlink mean SNRs being i.i.d.…”

Modelling the region‐based VoLTE cell capacity estimation using resource optimisation

“…Analytical models for estimating cell capacity in cellular networks have already been studied in several papers [13, 23–29], but most of them have not considered the region‐based cell capacity. For example, a simple analytical model is presented in [23] to calculate VoIP capacity in LTE UL.…”

“…However, this study has not considered some of the other influencing factors such as Packet bundling and TTI bundling. In [29], an analytical model is proposed that reduced energy consumption and also improved the system capacity for VoLTE in LTE‐Advanced. However, inclusion of VAF and SID with radio specific techniques such as Packet bundling and TTI bundling can further affect to the system capacity in terms of number of users.…”