Future 4g front-ends enabling smooth vertical handovers

Atallah, Jad G.; Ismail, Mohammed

doi:10.1109/mcd.2006.1598074

Cited by 28 publications

(14 citation statements)

References 3 publications

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“…This causes frequent change in radio channels, popularly known as handoff. Intra system or horizontal handoffs are initiated due to coverage loss in the present communication mode whereas inter system or vertical handoffs originate when a relatively preferred mode is detected [1]. In situations where mobility is the prime issue, we find that vertical handoffs are rare due to the absence of parallel wide-coverage standards.…”

Section: Introductionmentioning

confidence: 81%

Analysis of soft handoff algorithm for multi‐cellular systems: A finite integral approach

Chandra¹,

Roy²

2009

Int J Communication

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SUMMARYIn this paper the performance of soft handoff algorithm based on pilot signal strength measurements has been studied. In connection with the soft handoff it has been observed that the existing analytic expressions often involve integration in infinite limits. The expressions containing such kind of integrals have been meticulously transformed into finite range equations. Probability of outage, number of base stations (BS) in the active set, and number of active set updates are some of the performance metrics commonly considered in soft handoff. Accurate closed forms for all these performance indicators have been computed which, in turn, simplifies the calculation of several other metrics entailing them. Moreover, the underlying system model takes into account of more than two BS (specifically three) extending the traditional two BS model toward more complex but realistic characterization of soft handoff performance analysis framework.

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Section: Introductionmentioning

confidence: 81%

Analysis of soft handoff algorithm for multi‐cellular systems: A finite integral approach

Chandra¹,

Roy²

2009

Int J Communication

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“…User's device is equipped with several multi-mode radios, whereby WLAN and WiMAX share the same dual-mode transceiver. This WLAN/WiMAX transceiver chain is able to switch among the RATs within insignificant time of a single clock cycle [10].…”

Section: System and Problem Formulationmentioning

confidence: 99%

On the analysis of WiFi communication and WiMAX network entry over single radios

Wiethölter

Emmelmann

Chen

et al. 2012

2012 IEEE International Conference on Communications (ICC)

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Abstract-Future wireless mobile devices will have to support a variety of heterogeneous access technologies while having a limited number of transceiver chains. One of the most challenging tasks remains how to support wireless access in one of the technologies, while preparing a "smooth transition" to another, especially to technologies with a lengthy network entry such as WiMAX. This work proposes an efficient way to organize a WiMAX network entry process while continuing a communication session with stringent QoS requirements via WLAN. We advocate the prioritization of the strict WiMAX timing over the contention-based WLAN channel access. Our results show the applicability of this approach over a wide range of mobile WiMAX parameters and identify bounds on the WiMAX downlink load for which the WiFi communication does not suffer quality distortions.

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“…The need to support several standards in the same handheld device, associated with the power consumption and area restrictions, created the necessity to develop a portable, power efficient, integrated solution. This would require multimode user terminals that are able to adapt themselves to the user's requirements [2][3][4]. The most straightforward solution is the implementation of several front-end receivers, contradicting the objectives of area and power minimization in mobile devices.…”

Section: Multi-standard Receiversmentioning

confidence: 99%