Recursive analysis for soft handoff schemes in CDMA cellular systems

Wang, Xinbing; Xie, Shiguang; Hu, Xiuwen

doi:10.1109/twc.2009.080392

Cited by 8 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ben Ali and Pierre (2009) estimate the influence of both soft vertical handoff (SVHO) and WLAN mobility on call-blocking and dropping probabilities to prevent the voice quality of service (QoS) from degrading severely in loosely coupled networks, and this work showed that a resource-efficient SVHO can give better performance in low mobility areas. Wang, Xie, and Hu (2009) studied the performance of the call admission control for a code division multiple access (CDMA)-based cellular system and addressed the soft handoff procedure and the cellular geometry in CDMA systems under certain assumptions; they presented an analytical model for this architecture based on continuous time Markov Chain. The recursive analysis used for calculating the decision on soft or hard handoff will be chosen as the comparison in our work.…”

Section: Related Workmentioning

confidence: 99%

An Adaptive Live Streaming Mechanism for Heterogeneous Vehicular Networks

Huang

Chang

Guan

et al. 2015

Applied Artificial Intelligence

View full text Add to dashboard Cite

With the popularity of vehicular networks, how to maintain high quality of the seamless live streaming service is a great challenge. In this work, an adaptive seamless live streaming dissemination system for heterogeneous vehicular networks to tackle this challenging issue is presented. First, differential service is presented in this work to ensure that paid users can satisfy the live steaming service. Based on users' service-level agreement, an adaptive bandwidth allocation policy is proposed in this work to attain seamless handoff. In addition, because vehicles enter into the areas of hotspots, we also present a mechanism not only to prevent the insufficient bandwidth in advance, but also to make sure the paid users have higher priority than free users to obtain the seamless streaming service. When an unavoidable congestion occurs, we compress the streaming videos with a Region of Interest approach based on the content and characters of the video in order to maintain the service quality of paid users and reduce the required bandwidth for the streaming services. A series of simulation results show that our mechanism achieves better performance in terms of bandwidth utilization, packet loss ratio, and blocking probability. The capability of self-adaption in volatile real-time vehicular environment assists in the effectiveness and practicability of our proposed approach.

show abstract

Section: Related Workmentioning

confidence: 99%

An Adaptive Live Streaming Mechanism for Heterogeneous Vehicular Networks

Huang

Chang

Guan

et al. 2015

Applied Artificial Intelligence

View full text Add to dashboard Cite

show abstract

“…Due to the random nature of the received signal at UE, there are frequent inclusion and drop of BS(s) in the active set. Active set consists of those base stations which are connected with UE and soft handover region [15] is that region in which UE is connected with more than one base station. It is essential for properly designed soft handover algorithm [16, 17, 18, 19, 21, 22, and 23] to reduce the switching load of the system while maintaining the quality of service (QoS).…”

Section: Active Set Size In Wcdmamentioning

confidence: 99%

Active Set Size Effects at HSUPA in WCDMA Systems

Soy¹,

Safak²,

Bakiler³

2015

Int J App Math Elt Comp

View full text Add to dashboard Cite

WCDMA cellular networks support soft handover, which guarantees the continuity of wireless services and enhanced communication quality. Cellular networks performance depends upon Soft handover parameters. In this paper, we have shown the effect of soft handover parameters on the performance of WCDMA cellular networks. We consider timeToTrigger1a,timeToTrigger1b, timeToTrigger1c and max active size as the Soft handover parameters. A very useful statistical measure for characterizing the performance of WCDMA cellular system is the mean active set size and soft handover region. It is shown through numerical results that above parameters have decisive effect on HSUPA, mean active set size and soft handover region and hence on the overall performance of the soft handover algorithm.

show abstract

“…This characteristic enables a mobile node to communicate with several APs and assess their link qualities while transmitting data to the serving AP. A common technology used in soft handoffs radios is code division multiple access (CDMA) [13]. In a hard handoff, the radio can use only one channel at any given time, and hence, it needs to stop the data transmission before the handoff process starts.…”

Section: Design Considerationsmentioning

confidence: 99%