An improved dynamic user equipment power saving mechanism for LTE system and performance analysis

Xu, Hao; Tian, Hui; Huang, Bo; Zhang, Ping

doi:10.1007/s11432-010-4069-7

Cited by 6 publications

(2 citation statements)

References 11 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although they concluded that enabling DRX can significantly reduce UEs' power consumption, they do not show how to optimize the DRX configurations. Reference [27] first proposes to adjust UEs' DRX configurations, but this scheme requires considerable control signaling for the adjustment. In [28], a dynamic DRX scheme is proposed to determine UEs' sleep cycle based on their traffic loads.…”

Section: Related Workmentioning

confidence: 99%

Two-Phase Multicast DRX Scheduling for 3GPP LTE-Advanced Networks

Liang

Chen

Hsieh

et al. 2016

IEEE Trans. on Mobile Comput.

View full text Add to dashboard Cite

For next-generation wireless communications, the 3GPP Long Term Evolution-Advanced (LTE-A) is the most promising technology which provides transmission rate up to 1 Gbps and supports various broadband multimedia services, such as IPTV and Voice/Video-over-IP services. To reduce the energy consumption of user equipments (UEs), the LTE-A standard defines the Discontinuous Reception Mechanism (DRX) to allow UEs to turn off their radio interfaces and go to sleep when no data needs to be received. However, how to optimally configure DRX for UEs is still left as an open issue. In this paper, we address the DRX optimization problem for multicast services. This problem asks how to guarantee the quality of service (QoS) of the multicast streams under the Evolved Node B (eNB) while minimizing the UEs' wake-up time. We prove this problem to be NP-complete and propose an energy-efficient heuristic. This heuristic consists of two phases. The first phase tries to aggregate the required bandwidth of the multicast streams for UEs to reduce their wake-up periods. The second phase further minimizes UEs' unnecessary wake-up periods by optimizing their DRX configurations. Extensive simulation results show that our scheduling is close to the optimum in most cases.

show abstract

Section: Related Workmentioning

confidence: 99%

Two-Phase Multicast DRX Scheduling for 3GPP LTE-Advanced Networks

Liang

Chen

Hsieh

et al. 2016

IEEE Trans. on Mobile Comput.

View full text Add to dashboard Cite

show abstract

“…The fundamental drivers for green communication are the need to reduce global CO 2 emissions and the savings in capital and operational expenditure through reduced energy consumption. The work in [111] aims to save power consumption of user equipment by developing a dynamic discontinuous reception scheme to adjust the inactivity timer and the sleep period of UE receivers. In [112], the authors discuss communication networks from an energy-efficiency point of view and summarize a series of energy consumption models as well as general approaches for developing these models.…”

Section: Challenges and Further Research Areasmentioning

confidence: 99%

A survey of next generation mobile communications research in China

Tian

Zheng

et al. 2011

Chin. Sci. Bull.

View full text Add to dashboard Cite

With the rapid development of wireless communication networks, the fourth generation (4G) has emerged to move beyond the limitations of the third generation (3G), with increased bandwidth, enhanced quality of services, and reduced costs of resources. In this paper, we discuss the key technologies of 4G and focus on surveying the ongoing research in 4G communications in China. The 4G technologies under investigation include multicarrier transmission, multiple antenna techniques, carrier aggregation, relays, cognitive radio, distributed antenna systems, network convergence, and network self-optimization. These technologies are the building blocks of 4G and contribute largely to the requirements of International Mobile Telecommunications Advanced (IMT-Advanced). For each technology, its benefits, research topics, and some existing approaches are examined. Finally, we briefly discuss the challenges and future research issues in 4G systems. multicarrier transmission, multiple antenna techniques, carrier aggregation, relay, cognitive radio, distributed antenna system, network convergence, network self-optimization Citation:The limitations of the third generation (3G) and the rapid growth in user demands has called for more advanced and efficient technologies for new generation systems. The upcoming fourth generation (4G) mobile communication systems are expected to solve the still-remaining problems of 3G systems and to provide a wide variety of adaptable services for mobile and nomadic users by using integrated heterogeneous network infrastructure. Based on a comprehensive and secure internet protocol (IP) solution, various services, such as voice, video, broadcasting media, and Internet, will be provided to users with high data rates anytime and anywhere. This is also known as the always best connected concept stating that a user can have the best service connection regardless of time and location.According to the steadily increasing demands and technology developments, wireless communication evolution can be grouped into different generations of networks. Each new generation has brought advances that revolutionized the field of mobile communication. The first generation (1G), initiating commercial mobile voice services with analog techniques, built the basic structure of mobile communications and solved many fundamental problems such as the multiplexing frequency band, roaming across domains, non-interrupted communication in mobile circumstances, and so on. The second generation (2G) of wireless technology, which marked the switching of mobile communication technology from analog to digital, offered higher capacity and lower costs for network operators as well as messages and low-rate data services for users, by using a circuit switch infrastructure. Working under 2G's framework, 2.5G brought the internet into mobile personal communications based on a packet switched radio connection technique. 3G systems, a mixture of packet and circuit-switched networks, are committed to achieving greater network capacity

show abstract