Adaptive load-based and channel-aware power saving for non-real-time traffic in LTE

Yang, Chun-Chuan; Chen, Jeng-Yueng; Mai, Yi-Ting; Liang, Ching-Hsiang

doi:10.1186/s13638-015-0435-x

Cited by 6 publications

(9 citation statements)

References 30 publications

(33 reference statements)

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“…16 in our previous work [3]. The idea of LBPS was also extended to support sleep scheduling in LTE [4,5]. In this paper, we are focusing on a more general and complicated network environment in which there are a number of RNs under the same base station of DeNB in the mode of TDD.…”

Section: Methodsmentioning

confidence: 99%

“…In order to maintain a balance between power-saving efficiency and delay performance, the value of Data_TH is suggested to be the amount of data that can be transmitted in an LTE subframe. Moreover, Channel Quality Indicator (CQI) was used for estimating the capacity of a subframe [4,5]. Three LBPS schemes, that is, LBPS-Aggr, LBPS-Split, and LBPS-Merge, were designed to multiplex multiple UEs in sleep scheduling.…”

Section: Previous Work Of Lbpsmentioning

confidence: 99%

“…It's worth mentioning that the length of the sleep period for each group in LBSP-Merge is set as a power of 2 (subframes) for an efficient check on the schedulability in sleep scheduling. For details of LBPS schemes, please refer to our previous work [3,4].…”

Section: Previous Work Of Lbpsmentioning

confidence: 99%

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Integrated sleep scheduling for multiple relays and UEs in LTE-TDD

Yang

Mai

Chen

et al. 2019

J Wireless Com Network

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Energy-saving for the LTE-A network with relay nodes in TDD mode is addressed in this paper, and integrated sleep scheduling schemes for relay nodes and user devices under a base station are designed. The authors' two previously proposed ideas, namely, Load-Based Power Saving (LBPS) and Virtual Time, are adopted in the design, and two strategies, namely, top-down and bottom-up each with three LBPS schemes are proposed. In the top-down strategy, the load as well as the channel quality on the backhaul link is first considered to determine the sleep pattern for all relay nodes, and then the sleep schedule for UEs under each relay node is determined accordingly. On the contrary, the load and the channel quality on the access links are first considered and then integrated into the sleep schedule on the backhaul link. Two associated mechanisms for the proposed LBPS schemes to operate in the virtual time domain are also proposed in the paper, i.e., calculation of the virtual subframe capacity and the mapping mechanisms from the virtual time to the actual time. The benefit of the proposed schemes in power saving over the standard-based scheme is demonstrated by the simulation study, and the bottom-up scheme of BU-Split outperforms the other schemes under equally distributed input load as well as the hotspot scenario. Discussion on the tradeoff of the processing overhead and the performance for the proposed schemes is presented in the paper.

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Section: Methodsmentioning

confidence: 99%

Section: Previous Work Of Lbpsmentioning

confidence: 99%

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Integrated sleep scheduling for multiple relays and UEs in LTE-TDD

Yang

Mai

Chen

et al. 2019

J Wireless Com Network

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“…The cycle length for each group in LBPS‐Merge is converted the closest and smaller power of 2 to efficiently find a feasible sleep schedule for all groups. Please refer to the authors' previous work for more details of the LBPS schemes.…”

Section: Related Workmentioning

confidence: 99%

“…Please refer to the authors' previous work for the calculation of function LengthAwkSlpCyl . Note that the threshold of data accumulation Data_TH is set as a percentage (α) of the capacity to reduce the probability that the amount of data exceeding the capacity (α = 0.8 in the simulation).…”

Section: Lbps Integrating Rt and Nrt In Tddmentioning

confidence: 99%

Integrated load‐based power saving for real‐time and nonreal‐time traffic in LTE‐TDD

Yang

Chen

Mai

et al. 2017

Int J Communication

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Long-Term Evolution (LTE) is a 4G wireless broadband technology developed bythe Third Generation Partnership Project. Two duplex modes, namely, frequency division duplex and time division duplex (TDD), are defined in LTE for transmission in both downlink and uplink directions simultaneously. Power saving mechanisms for LTE-frequency division duplex were proposed in the authors' previous work. Applicability of the previously proposed mechanisms to LTE-TDD is investigated in this paper, and the idea of "virtual time" associated with the mapping mechanism from the virtual time domain to the actual time domain for different TDD configurations is proposed. With the help of the mapping mechanism, 3 revised power saving schemes are proposed to support real-time user equipments and nonreal-time user equipments in LTE-TDD. Simulation study demonstrates the effectiveness of the mapping mechanism as well as the benefit of the proposed schemes in power saving efficiency and real-time support in comparing with the standard-based mechanism.

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Performance analysis of LTE physical layer using hardware cosimulation techniques and implementation on FPGA for communication systems

Venkataramanan

Lakshmi

2019

Int J Communication

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The recent mobile networks provide large data access using long-term evolution networks. Long-term evolution networks are a third-generation partnership project standard that provides different speed limits for uplink and downlink. The different network operators have different bandwidth requirements to provide different services. Long-term evolution improves the efficiency of the network. The analysis of long-term evolution is performed using different signal processing algorithms that require a realistic, flexible, and standard compliant simulation environment. This study emphasizes to measure the performance of long-term evolution downlink and uplink physical layer based on Release 11, 12, and 13. The analysis of orthogonal frequency division multiple access for downlink and single-carrier frequency division multiplexing access for uplink using different modulation schemes like quadrature amplitude modulation (4, 16, 64) and different antenna configurations in long-term evolution physical layer is analyzed using hardware cosimulation platform.

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Adaptive load-based and channel-aware power saving for non-real-time traffic in LTE

Cited by 6 publications

References 30 publications

Integrated sleep scheduling for multiple relays and UEs in LTE-TDD

Integrated sleep scheduling for multiple relays and UEs in LTE-TDD

Integrated load‐based power saving for real‐time and nonreal‐time traffic in LTE‐TDD

Performance analysis of LTE physical layer using hardware cosimulation techniques and implementation on FPGA for communication systems

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