The deployment of hot spot wireless LANs to enhance the performance of 3G cellular networks

Author(s):  
A. Doufexi
2007 ◽  
Vol 2 (4) ◽  
pp. 237 ◽  
Author(s):  
Wei Song ◽  
Weihua Zhuang ◽  
Aladdin Saleh

2021 ◽  
Author(s):  
Soumya Ranjan Samal ◽  
Kaliprasanna Swain ◽  
Shuvabrata Bandopadhaya ◽  
Nikolay Dandanov ◽  
Vladimir Poulkov ◽  
...  

Abstract This paper has proposed a user-density-based coverage optimization technique for ultra-dense cellular networks. Antenna tilting is a promising coverage optimization technique to be used in 5G networks that significantly improve the signal to interference plus noise ratio (SINR) by choosing the appropriate angle of tilt. In this paper, the cellular coverage has been optimized for scattered user densities/user-hotspots using an adaptive antenna tilting mechanism that steers the beams towards the temporal hot spot in the coverage area. The proposed method has the competence to improve the desired SINR level and coverage area for a group of the user rather than a single user. In this work, a reinforcement learning (RL) algorithm has been implemented to optimize the tilt angle. The performance of the proposed technique has been evaluated in the simulation platform considering a three-sectored multicellular mobile network where the groups of user clusters are distributed randomly. The result confirms the improvement in RSS and SINR value in the group of users having high density with maximum user satisfaction.


2012 ◽  
Vol 3 (2) ◽  
pp. 238-241
Author(s):  
Kriti Saraswat ◽  
Ajit Kumar Shrivastava ◽  
Amit Saxena

Dense deployment of cellular networks is leading to scarcity of communication bandwidth or what we call as channel. If compared to its wired counterparts, wireless cellular network have limited number of channels available, which gives rise to problem of efficient channel allocation. Here, in this piece of work, the main objective is to put an effort to improve existing channel allocation scheme. In earlier existing hybrid allocation scheme, the base station notifies about the hot-spots to the Mobile Switching Centre (MSC) and if MSC has available channels in its central pool then it satisfies the request. Now, the novelty of this work starts where central pool gets exhausted and request of channels from base station (BS) still arrives and is served by returning the unused channels by different cells back to MSC on its request. The simulation of this approach is expounded and evaluated over OMNeT++ in a scenario with fixed channel allocation and hybrid approach by varying the proportion of dynamic channels to total number of channels available and the effectiveness is evaluated in terms of Call blocked and Call dropped versus System load.


2007 ◽  
Vol 6 (6) ◽  
pp. 2294-2304 ◽  
Author(s):  
H. Rutagemwa ◽  
Minghui Shi ◽  
Xuemin Shen ◽  
J.W. Mark

Author(s):  
Soumya Ranjan Samal ◽  
Shuvabrata Bandopadhaya ◽  
Kaliprasanna Swain ◽  
Vladimir Poulkov

This paper has analysed the mobility management schemes in heterogenous cellular networks (HCNs) considering their power consumptions and network selection delays. The HCNs are the key enabler for 5G cellular network to ensure better user connectivity in ultra-dense networks. Large numbers of small cells are deployed under a macro-cell targeting network hot spot. However, ensuring seamless coverage to the mobile subscribers in motion is challenging in such networks. Frequent handoff between the cells with different bandwidth, throughput, latency, and coverage penetrations, significantly increases the signalling overhead in network. In this context, an efficient mobility management scheme plays a key role for the success of HCN technology. In this paper, a detailed behavioural study of mobility management schemes used in HCN has been provided. For mobile users in the network, the power consumption and network selection delay has been evaluated for k-tier architecture of HCN.


2003 ◽  
Vol 41 (7) ◽  
pp. 58-65 ◽  
Author(s):  
A. Doufexi ◽  
E. Tameh ◽  
A. Nix ◽  
S. Armour ◽  
A. Molina

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