OFDMA Femtocells: Intracell Handover for Interference and Handover Mitigation in Two-Tier Networks

Liu, David; Ladányi, Ákos; Jüttner, Alpár; Zhang, Jie

doi:10.1109/wcnc.2010.5506538

Cited by 25 publications

(18 citation statements)

References 11 publications

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“…In this section, we summarize handover techniques developed for two-tier networks (macrocell and femtocell). In [12], a handover algorithm based on the received signal strengths (RSSs) reported by a nonsubscriber was proposed for orthogonal frequency division multiple access (OFDMA) two-tier macrocell-femtocell networks by providing the priority to the intra-cell handover for interference and handover mitigation. The main idea of this paper is that when a nonsubscriber connected to a macrocell suffers from cross-tier interference because of a nearby femtocell, the macrocell itself performs an intra-cell handover if possible.…”

Section: Related Workmentioning

confidence: 99%

“…The handover algorithms discussed in [12][13][14][15], and [16] do not take into account the power discrepancy between macro eNodeB and femto eNodeB. However, the conventional handover algorithm based on the RSS with hysteresis and threshold cannot be applied to macrocell-femtocell networks directly because there is a large difference in the transmit power of macro eNodeB and femto eNodeB.…”

Section: Related Workmentioning

confidence: 99%

See 1 more Smart Citation

Efficient handover measurement technique for small‐cell networks using a virtual cell synchronization signal

Pec

Park

Cho

2016

Wireless Communications

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A small-cell network (SCN) constructed by splitting a macro-cell into numerous small cells using an active antenna array system is studied. A synchronization signal appropriate for the SCN, virtually generated by an eNodeB with 3D beamforming, is proposed for efficient handover in SCNs. The virtual cell synchronization signal (VCSS) carries a macro-cell ID (MCID) and virtual-cell ID (VCID) in a hierarchical manner, allowing us to distinguish between an intracell handover (virtual cell handover within a cell without changing the serving eNodeB) and inter-cell handover (virtual cell handovers across cells while changing the serving eNodeB) in SCNs. Using the signal metrics obtained by the VCSS, an efficient handover measurement technique is proposed which can significantly reduce the processing time and overhead by distinguishing between the intra-cell/inter-cell handovers. The performance of the proposed technique is evaluated by simulating two different deployment scenarios of LTE-based SCN with 3D beamforming.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Efficient handover measurement technique for small‐cell networks using a virtual cell synchronization signal

Pec

Park

Cho

2016

Wireless Communications

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show abstract

“…The cross-tier interference [13] is defined as the decrease in signal quality of macrocell users due to the presence of femto users sharing the same spectrum and vice versa, and the co-tier interference occurs when all femtocells share the same spectrum. Advanced resource scheduling and allocation techniques have been defined for both spectrum management situations, such as [14] for cross-tier and [15] [16] for co-tier interference.…”

Section: Horizontal Data Offloadingmentioning

confidence: 99%

Mobile data traffic offloading over Passpoint hotspots

et al. 2015

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Wi-Fi technology has always been an attractive solution for catering the increasing data demand in mobile networks because of the availability of WiFi networks, the high bit rates they provide, and the lower cost of ownership. However, the legacy WiFi technology lacks of seamless interworking between Wi-Fi and mobile cellular networks on the one hand, and between Wi-Fi hotspots on the other hand. Nowadays, the recently released Wi-Fi Certified Passpoint Program provides the necessary control-plane for these operations. Service providers can henceforth look to such Wi-Fi systems as a viable way to seamlessly offload mobile traffic and deliver added-value services, so that subscribers no longer face the frustration and aggravation of connecting to Wi-Fi hotspots. However, the technology being rather recent, we are not aware of public studies at the state of the art documenting the achievable gain in real mobile networks. In this paper, we evaluate the capacity and energy saving gain that one can get by offloading cellular data traffic over Passpoint hotspots as a function of different hotspot placement schemes and of access point selection policies (two enabled by the Passpoint control-plane and one independent of it). We compare the policies using real mobile data from the Orange network in Paris. We show that offloading using Passpoint control-plane information can grant up to 15% capacity gain and 13% energy saving gain with respect to Passpoint-agnostic ones based on signal quality information. As of placement strategy, installing Passpoint hotspots in the outer annulus of the macrocell coverage grants the maximum capacity gain.

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“…The cross-tier interference [11] is defined as the decrease in signal quality of macrocell users due to the presence of femto users sharing the same spectrum and vice versa, and the co-tier interference occurs when all femtocells share the same spectrum. Advanced resource scheduling and allocation techniques have been defined for both spectrum management situations, such as [12] for cross-tier and [13] [14] for co-tier interference.…”

Section: Horizontal Data Offloadingmentioning

confidence: 99%

Quantifying the achievable cellular traffic offloading gain with passpoint hotspots

Hoteit¹,

Secci²,

Pujolle³

et al. 2014

Proceedings of the 2014 ACM International Workshop on Wireless and Mobile Technologies for Smart Cities

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Wi-Fi technology has always been an attractive solution for catering the increasing data demand in mobile networks because of the availability of Wi-Fi networks, the high bit rates they provide, and the lower cost of ownership. However, the legacy WiFi technology lacks of seamless interworking between Wi-Fi and mobile cellular networks on the one hand, and between Wi-Fi hotspots on the other hand. Nowadays, the recently released Wi-Fi Certified Passpoint Program provides the necessary control-plane for these operations. Service providers can henceforth look to such Wi-Fi systems as a viable way to seamlessly offload mobile traffic and deliver addedvalue services, so that subscribers no longer face the frustration and aggravation of connecting to Wi-Fi hotspots. However, the technology being rather recent, we are not aware of public studies at the state of the art documenting the achievable gain in real mobile networks. In this paper, we evaluate the capacity gain that one can get by offloading cellular data traffic over Wi-Fi Passpoint hotspots as a function of different hotspot placement schemes and of access point selection policies (two enabled by the Passpoint control-plane and one independent of it). We compare the policies using real mobile data from the Orange network in Paris. We show that offloading using Passpoint control-plane information can grant up to 15% gain with respect to Passpoint-agnostic ones based on signal quality information. As of placement strategy, installing Passpoint hotspots in the outer annulus of the macrocell coverage grants the maximum gains.

show abstract

OFDMA Femtocells: Intracell Handover for Interference and Handover Mitigation in Two-Tier Networks

Cited by 25 publications

References 11 publications

Efficient handover measurement technique for small‐cell networks using a virtual cell synchronization signal

Efficient handover measurement technique for small‐cell networks using a virtual cell synchronization signal

Mobile data traffic offloading over Passpoint hotspots

Quantifying the achievable cellular traffic offloading gain with passpoint hotspots

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