Voice call handover mechanisms in next-generation 3GPP systems

Salkintzis, A.K.; Hammer, Mike; Tanaka, Ikema; Wong, Chee Wai

doi:10.1109/mcom.2009.4785380

Cited by 19 publications

(8 citation statements)

References 1 publication

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“…Under this scenario, it can be easily anticipated that the WSPs would upgrade their networks to the evolved packet system (EPS) architecture that has been envisaged from 3GPP release 8 onwards [4]. The EPS consists of the new all-IP core network namely, evolved packet core (EPC) and the new RAN called evolved UTRAN.…”

Section: A System Designmentioning

confidence: 99%

“…Further, various RANs (e.g. GSM, UMTS, WiMAX, CDMA2000, WLAN) can be connected to the EPC so that the WSP can provide seamless mobility to the users across the composite wireless network (CWN) of the WSP [4]. The WG 1900.4 is formed to finalize a standard architecture for rolling out the DSA concept in case of heterogeneous network of the WSP [3].…”

Section: A System Designmentioning

confidence: 99%

“…(6) Further, the entire amount of channels must be distributed among the RANs as per (4). The solutions that satisfy (4) and (6) are called imputations in the parlance of cooperative game theory.…”

Section: Problem Formulationmentioning

confidence: 99%

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Simulated annealing based solution for limited spectrum availability in composite wireless network

Sengupta

Paul

Maitra

2014

2014 International Conference on Advances in Computing, Communications and Informatics (ICACCI)

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Requirement of multiple services from the customers has compelled the wireless service providers (WSPs) to maintain multiple radio access networks (RANs) of different radio access technologies (RATs). Further, dynamic spectrum allocation (DSA) approach offers a great opportunity to the WSPs to utilize their available spectrum in more efficient manner. As the growth of demand for wireless services is expected to continue unabated, the WSPs may also face a scenario in which, spectrum demands from the RANs is more than the availability of spectrum with the WSP.In this work, we have addressed this limited spectrum availability scenario in the composite wireless network (CWN) considering realistic constraints such as different propagation characteristics of channels at different spectrum region and discrete channelizations of the RANs. The problem has been posed as a bankruptcy game and Shapley value solution of the game has been computed. For maintaining the fairness of spectrum allocation, maximizing equality of distribution (MED) is considered to be the objective of the WSPs. Subsequently, we have proposed simulated annealing (SA) based spectrum allocation solution that would maximize the objective. Our simulation result shows that the SA based solution outperforms existing solutions such as Shapley value and max-min fairness by wide margin as far as objective MED in concerned.

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Section: A System Designmentioning

confidence: 99%

Section: A System Designmentioning

confidence: 99%

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Simulated annealing based solution for limited spectrum availability in composite wireless network

Sengupta

Paul

Maitra

2014

2014 International Conference on Advances in Computing, Communications and Informatics (ICACCI)

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“…T J HO HO Total avg × = (13) where HO avg and HO Total are the average handovers per UE per second and total number of successful handovers, respectively and J and T are the total number of users and total simulation time, respectively. HO Total is incremented if and only if a handover is performed successfully.…”

Section: Performance Metricsmentioning

confidence: 99%

Optimized Performance Evaluation of LTE Hard Handover Algorithm with Average RSRP Constraint

Lin¹,

Sandrasegaran²,

Ramli³

et al. 2011

IJWMN

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Hard handover mechanism is adopted to be used in 3GPP Long Term Evolution (3GPP LTE) in order to reduce the complexity of the LTE network architecture. This mechanism comes with degradation in system throughput as well as a higher system delay. This paper proposes a new handover algorithm known as LTE Hard Handover Algorithm with Average Received Signal Reference Power (RSRP) Constraint (LHHAARC) in order to minimize number of handovers and the system delay as well as maximize the system throughput. An optimized system performance of the LHHAARC is evaluated and compared with three well-known handover algorithms via computer simulation. The simulation results show that the LHHAARC outperforms three well-known handover algorithms by having less number of average handovers per UE per second, shorter total system delay whilst maintaining a higher total system throughput.

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“…Model 2 can be very useful to the design of emerging cellular systems as the volume of roaming traffic is expected to increase significantly due to the adoption of heterogeneous network models (e.g. voice continuity between LTE and UMTS [17]) as well as mobile virtual network operator business models where third party providers can offer mobile services without owning cellular network infrastructure. Furthermore, Model 2 can guide the design of QoS signalling load at policy servers in the core network as we proposed in our preliminary work in Reference [4].…”

Section: Models Applications Within Emerging Cellular Networkmentioning

confidence: 99%

A new framework for characterising the number of handovers in cellular networks

Bziuk¹,

Zaghloul²,

Jukan³

2009

Trans Emerging Tel Tech

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SUMMARYThe handover process was widely studied in the literature in the past decade. While significant efforts addressed the mean handover rate, few attempted to characterise the distribution of the number of handovers under the assumption that the call and the cell residence times (CRTs) are generally distributed. Motivated by the increasing impact of handovers on the design and performance of the control and data planes in the emerging cellular networks, in this paper, we propose a new analytical framework to obtain the probability generating function (PGF) of the number of handovers. Our work covers three generic session behaviours, including new, roaming and location triggered calls, and thus facilitates the calculation of the mean number of handovers for such session types. When the distributions have rational Laplace transforms, we obtain closed form solutions that are simple-to-compute and hence provide cellular network designers and researchers with deeper insights into the performance of mobility aware wireless protocols for different application scenarios. Our results show that handover models for new sessions can reasonably approximate location triggered sessions while separate treatment for roaming sessions is generally required. The numerical examples based on the generic hyper-Erlang session durations show the practicability of our framework.

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Voice call handover mechanisms in next-generation 3GPP systems

Cited by 19 publications

References 1 publication

Simulated annealing based solution for limited spectrum availability in composite wireless network

Simulated annealing based solution for limited spectrum availability in composite wireless network

Optimized Performance Evaluation of LTE Hard Handover Algorithm with Average RSRP Constraint

A new framework for characterising the number of handovers in cellular networks

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