Dynamic slot-based carrier scheduling scheme for downlink multimedia traffic over LTE advanced networks with carrier aggregation

Abstract

Abstract:Carrier aggregation (CA) in long-term evolution advanced (LTE-A) networks is a promising tool for providing bandwidth extension for high data rate communication. In CA, the efficient scheduling of carriers has imposed a new challenge in the design of delay-sensitive carrier scheduling for mobile multimedia applications. In this paper, a new dynamic slot-based carrier scheduling scheme has been proposed for efficient resource allocation to support the quality of service (QoS) of mobile traffic over CA transmission. The key idea of this scheduling is the allocation of slots for each component carrier based on the queue state information, taking into consideration the priority based on the delay requirements of individual mobile multimedia traffic. Two different cases of the scheduler with and without priority are implemented to facilitate the performance comparison. The simulation results show that the proposed scheme provides better spectrum utilization, throughput, and delay performance than the existing scheduling scheme and improves delaysensitive mobile traffic QoS.

An Enhanced Packet Scheduling Algorithm for the Downlink Cognitive Long Term Evolution-Advanced

“…(4) when determining the priority of each user on each RB, on each CC and at each time. Besides the extended versions of the M-LWDF, other studies that investigated the packet scheduling algorithms in the literature include [6][7][8][9][10][11][12][13][14]. Based on our study, it was observed that the majority of these conventional multi-user packet scheduling algorithms offer to meet the desired QoS of either for RT packets or NRT packets.…”

Multimedia Communication over Cognitive Radio Networks from QoS/QoE Perspective; A Comprehensive Survey

“…Closed-form Expression [132] Column Generationbased Algorithm [85] Dynamic Programming [135], [206], [229], [239], [240] Fountain Code [125], [126], [201] Greedy Algorithm [86]- [89], [100], [106], [207], [216], [241]- [243] Non-linear Programming [136], [244], [245] Lift-and-Project [246] Miscellaneous Multi-channel Mode [86], [87], [105], [137], [145], [146], [242], [247]- [250] Carrier Aggregation [84], [ [78], [83], [84], [100], [103], [121], [134], [137], [200], [209], [247], [249], [257]- [259] fully cognitive, they need to be equipped with learning and reasoning capabilities. Us...…”

“…Carrier components may be non-contiguous over the same spectrum band or non-contiguous on different spectrum bands in this mode. In [84], a dynamic time-slotted carrier scheduling scheme was studied with the aim of efficient resource management and to support the QoS of mobile multimedia traffic over a CA-based framework. In this scheme, time slots are allocated to each component carrier according to the queue status and based on the priority of the application, which was defined based on the delay requirements.…”

“…The authors in [84], [135], [202], [205], [229], [230], [230], [234], [236], [240] adopted a TDMA multi-user CRN, where at the beginning of every time slot, each user tried to access the channel after a certain time delay and tried to minimize the delay by restricting the input bitrate to the video BL. The authors in [135], [240] considered the issue of realtime wireless video transmission over CRNs and designed a distortion-delay optimization problem based on the encoder behavior, cognitive MAC scheduling, transmission and modulation, and the coding scheme in order to achieve the best user-perceived video quality.…”

Experimental performance evaluations of CoMP and CA in centralized radio access networks

“…An analytic model for high availability analysis of user equipments (UEs) in heterogeneous cellular networks (HetNets) using the benefits of both CA with CoMP is analyzed in [22,23]. A carrier scheduling scheme to enhance QoS of mobile traffic using CA is studied in [24]. Synchronization requirements of new 5G technologies including CA and CoMP are analyzed in [25].…”