Performance analysis of a handoff scheme for two-tier cellular CDMA networks

Hamad, Ahmed; Morsy, Ehab; Adel, Sameh

doi:10.1016/j.eij.2011.06.002

“…Therefore, the resource reservation time in FCHO needs to be optimized so as to decrease it and bring it as close as possible to that of CHO. Some earlier studies [36]- [38] have focused on the call blocking probability of new calls and forced termination probabilities of ongoing calls during handover, both due to the unavailability of idle resources on the network side. In this article, we focus on an admission control scheme where idle resources are always available and where all handover requests sent by the serving cell c 0 to the target cell c ′ are approved by c ′ .…”

Section: A Resource Reservation Problem In Fchomentioning

confidence: 99%

On the Analysis and Optimization of Fast Conditional Handover With Hand Blockage for Mobility

Iqbal

¹

,

Salman

²

,

Awada

³

et al. 2023

IEEE Access

7

0

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Although frequency range 2 (FR2) systems are an essential part of 5G-Advanced and future 3GPP releases, the mobility performance of multi-panel user equipment (MPUE) with hand blockage is still an area open for research and standardization. In this article, a comprehensive study on the mobility performance of MPUE with hand blockage is performed for conditional handover (CHO) and its potential enhancement denoted by fast conditional handover (FCHO). In contrast to CHO, in FCHO the MPUE can reuse earlier target cell preparations after each handover to autonomously execute subsequent handovers. This saves both the signaling overhead associated with the reconfiguration and re-preparation of target cells after each handover and reduces mobility failures. Results have shown that FCHO offers considerable mobility performance gains as compared to CHO for different hand blockage cases that are dependent on the hand position around the MPUE. For the worst-case hand blockage scenario, it is seen that mobility failures reduce by 10.5% and 19.3% for the 60 km/h and 120 km/h mobility scenarios, respectively. This gain comes at the expense of reserving the handover resources of an MPUE for a longer time given that the target cell configurations are not necessarily released after each handover. In this article, the longer resource reservation problem in FCHO is analysed and three different resource reservation optimization techniques are introduced. Results have shown that these optimization techniques not only reduce the resource reservation time but also significantly reduce the signaling overhead at the possible expense of a tolerable degradation in mobility performance.

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“…In addition to voice services, data services such as Internet, image also appeared. In order to effectively use wireless resources and improve the system capacity and service QoS, designed handoff strategy that is suitable for voice, data and multi-service has been a hot research (Hamad et al, 2011;Sharna et al, 2011;Yuan-Yuan et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Improvement Priority Handoff Scheme for Multi-Service Wireless Mobile Networks

Liu¹,

Jia²,

Qin³

et al. 2014

JNW

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In this study, a new handoff strategy to improve the performance of wireless mobile networks is presented. It has been found form this study that the dropping probability of handoff calls is drastically reduced compared to the existing method of channel reservation strategy of handoff calls and the performance of new calls can be improved. The strategy is that the new call should be delayed then it can use the last idle channel. The time that all the channels are holding has been shortened. Opportunities of the new call and handoff call occupancy channel are increased; the scheme also takes into account the priority of different data types and only when the highpriority data packets queue is empty, the data packets in low-priority data queue can be transmitted. Simulation results show that, to let the new voice call delay in the allowable range, can effectively reduce the dropping probability of handoff call and the blocking probability of high-priority data while improving the probability of new call to enter into the systems.

show abstract

“…In addition to voice services, data services such as Internet, image also appeared. In order to effectively use wireless resources and improve the system capacity and service QoS, designed handoff strategy that is suitable for voice, data and multi-service has been a hot research (Hamad et al, 2011;Sharna et al, 2011;Yuan-Yuan et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Improvement in the Priority Handoff Scheme for Multi-Service Wireless Mobile Networks

Liu¹,

Jia²,

Qin³

et al. 2013

RJASET

0

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In this study, a new handoff strategy to improve the performance of wireless mobile networks is presented. It has been found form this study that the dropping probability of handoff calls is drastically reduced compared to the existing method of channel reservation strategy of handoff calls and the performance of new calls can be improved. The strategy is that the new call should be delayed then it can use the last idle channel. The time that all the channels are holding has been shortened. Opportunities of the new call and handoff call occupancy channel are increased; the scheme also takes into account the priority of different data types and only when the highpriority data packets queue is empty, the data packets in low-priority data queue can be transmitted. Simulation results show that, to let the new voice call delay in the allowable range, can effectively reduce the dropping probability of handoff call and the blocking probability of high-priority data while improving the probability of new call to enter into the systems.

show abstract

Performance analysis of a handoff scheme for two-tier cellular CDMA networks

Cited by 5 publications

References 16 publications

On the Analysis and Optimization of Fast Conditional Handover With Hand Blockage for Mobility

On the Analysis and Optimization of Fast Conditional Handover With Hand Blockage for Mobility

Improvement Priority Handoff Scheme for Multi-Service Wireless Mobile Networks

Improvement in the Priority Handoff Scheme for Multi-Service Wireless Mobile Networks

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