Dr. Hafiz Yasar Lateef | University of Leeds (original) (raw)

Dr. Hafiz Yasar Lateef

Supervisors: Des Mclernon and Mounir Ghogho

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Papers by Dr. Hafiz Yasar Lateef

Research paper thumbnail of A framework for classification of Self-Organising network conflicts and coordination algorithms

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013

The next generation Long Term Evolution (LTE) & LTE-Advanced cellular networks will be equipped w... more The next generation Long Term Evolution (LTE) & LTE-Advanced cellular networks will be equipped with numerous Self-Organizing (SO) functions. These SO functions are being envisioned to be inevitable for technical as well as commercial viability of LTE/LTE-Advanced networks. Therefore, a lot of research effort is currently being channeled to the design of various SO functions. However, given the convoluted and complex interrelationships among cellular system design and operational parameters, a large number of these SO functions are highly susceptible to parametric or logical inter-dependencies. These inter-dependencies can induce various types of conflicts among them, thereby undermining the smooth and optimal network operation. Therefore, an implicit or explicit self-coordination framework is essential, not only to avoid potential objective or parametric conflicts among SO functions, but also to ensure the stable operation of wireless networks. In this paper we present such a self-coordination framework. Our framework builds on the comprehensive identification and classification of potential conflicts that are possible among the major SO functions envisioned by Third Generation Partnership Project (3GPP) so far. This classification is achieved by analyzing network topology mutation, temporal and spatial scopes, parametric dependencies, and logical relations that can affect the operation of SO functions in reality. We also outline a solution approach for a conflict-free implementation of multiple SO functions in LTE/LTE-Advanced networks. Moreover, as an example, we highlight future research challenges for optimum design of Mobility Load Balancing (MLB) and Mobility Robustness Optimisation (MRO).

Research paper thumbnail of Towards Energy Efficient and Quality of Service Aware Cell Zooming in 5G Wireless Networks in IEEE VTC Fall 2015

Research paper thumbnail of Performance analysis of opportunistic relaying and opportunistic hybrid incremental relaying over fading channels in IET Communications Journal

Research paper thumbnail of LTE-Advanced Self-Organising Network Conflicts and Coordination Algorithms in IEEE Wireless Communications Magazine

Research paper thumbnail of Hafiz Yasar Lateef, Ali Imran and Adnan Abu-Dayya, “A Framework for Classification of Self-Organising Network Conflicts and Coordination Algorithms,” In Proc. IEEE Personal Indoor and Mobile Radio Communications (IEEE PIMRC 2013), UK, pp. 2913-2918, 2013

Research paper thumbnail of Hafiz Yasar Lateef, Carla Fabiana Chiasserini, Tamer EIbatt, Amr Mohammed, and Mohsen Guizani, “Towards Energy Efficient Relay Placement and Load Balancing in Future Wireless Networks,” Accepted in IEEE Personal Indoor and Mobile Radio Communications (IEEE PIMRC 2014), Washington DC, USA, 2014

Research paper thumbnail of H. Y. Lateef, M. Ghogho and D. C. Mclernon, "On the Performance Analysis of Multi-hop cooperative Relay Networks Over Generalized-K Fading Channels," IEEE Communications Letters (accepted for publication), 2011.

This letter analyzes an amplify-and-forward (AF) transmission based multi-hop cooperative relay n... more This letter analyzes an amplify-and-forward (AF) transmission based multi-hop cooperative relay network (MCRN) over Generalized-fading channels. In this letter, highly simplified, novel asymptotic expressions for the average symbol error rate and the outage probability of MCRNs over Generalizedfading channels (with arbitrary fading parameters) are presented. Both theoretical analysis and simulations explicitly reveal that for MCRNs over Generalized-fading channels, a diversity order of 2 is achieved when shadowing is more severe than fading and a diversity order of 2 is achieved when fading is more severe than shadowing (where and represent the Generalized-distribution shape parameters).

Research paper thumbnail of H. Y. Lateef, D. C. Mclernon and M. Ghogho, "Performance Analysis of Multi-user, Multi-hop Cooperative Relay Networks Over Nakagami-m Fading Channels," IEEE Communications Letters, 2011.

Research paper thumbnail of H. Y. Lateef, M.ghogho and Des C. Mclernon, "Performance Analysis of multi-hop Cooperative Relay Networks Over Generalized-K Fading Channels," in Proc. IEEE Australian Communications Theory Workshop (AUSCTW'11), Melbourne, Australia, pp. 71-76, Feb. 2011

Research paper thumbnail of H. Y. Lateef, M. Ghogho, and D. C. Mclernon, "Performance Analysis of Kth Opportunistic Relaying Over Non-Identically Distributed Cooperative Paths," IEEE SPAWC, Marakkech, Morocco, 2010.

Research paper thumbnail of H. Y. Lateef, D. C. Mclernon, and M. Ghogho, "Performance Analysis of Cooperative Communications with Opportunistic Relaying,"IEEE SPAWC, Marakkech, Morocco, 2010.

Research paper thumbnail of H. Y. Lateef, O. Waqar, D. C. Mclernon, and M. Ghogho, "Outage Probability Analysis of Cooperative Communication Systems over Gamma-Shadowed Nakagami-m Fading Channels," IEEE NGMAST, Cardiff, United Kingdom, pp. 251-255, 2009.

Research paper thumbnail of A framework for classification of Self-Organising network conflicts and coordination algorithms

2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2013

The next generation Long Term Evolution (LTE) & LTE-Advanced cellular networks will be equipped w... more The next generation Long Term Evolution (LTE) & LTE-Advanced cellular networks will be equipped with numerous Self-Organizing (SO) functions. These SO functions are being envisioned to be inevitable for technical as well as commercial viability of LTE/LTE-Advanced networks. Therefore, a lot of research effort is currently being channeled to the design of various SO functions. However, given the convoluted and complex interrelationships among cellular system design and operational parameters, a large number of these SO functions are highly susceptible to parametric or logical inter-dependencies. These inter-dependencies can induce various types of conflicts among them, thereby undermining the smooth and optimal network operation. Therefore, an implicit or explicit self-coordination framework is essential, not only to avoid potential objective or parametric conflicts among SO functions, but also to ensure the stable operation of wireless networks. In this paper we present such a self-coordination framework. Our framework builds on the comprehensive identification and classification of potential conflicts that are possible among the major SO functions envisioned by Third Generation Partnership Project (3GPP) so far. This classification is achieved by analyzing network topology mutation, temporal and spatial scopes, parametric dependencies, and logical relations that can affect the operation of SO functions in reality. We also outline a solution approach for a conflict-free implementation of multiple SO functions in LTE/LTE-Advanced networks. Moreover, as an example, we highlight future research challenges for optimum design of Mobility Load Balancing (MLB) and Mobility Robustness Optimisation (MRO).

Research paper thumbnail of Towards Energy Efficient and Quality of Service Aware Cell Zooming in 5G Wireless Networks in IEEE VTC Fall 2015

Research paper thumbnail of Performance analysis of opportunistic relaying and opportunistic hybrid incremental relaying over fading channels in IET Communications Journal

Research paper thumbnail of LTE-Advanced Self-Organising Network Conflicts and Coordination Algorithms in IEEE Wireless Communications Magazine

Research paper thumbnail of Hafiz Yasar Lateef, Ali Imran and Adnan Abu-Dayya, “A Framework for Classification of Self-Organising Network Conflicts and Coordination Algorithms,” In Proc. IEEE Personal Indoor and Mobile Radio Communications (IEEE PIMRC 2013), UK, pp. 2913-2918, 2013

Research paper thumbnail of Hafiz Yasar Lateef, Carla Fabiana Chiasserini, Tamer EIbatt, Amr Mohammed, and Mohsen Guizani, “Towards Energy Efficient Relay Placement and Load Balancing in Future Wireless Networks,” Accepted in IEEE Personal Indoor and Mobile Radio Communications (IEEE PIMRC 2014), Washington DC, USA, 2014

Research paper thumbnail of H. Y. Lateef, M. Ghogho and D. C. Mclernon, "On the Performance Analysis of Multi-hop cooperative Relay Networks Over Generalized-K Fading Channels," IEEE Communications Letters (accepted for publication), 2011.

This letter analyzes an amplify-and-forward (AF) transmission based multi-hop cooperative relay n... more This letter analyzes an amplify-and-forward (AF) transmission based multi-hop cooperative relay network (MCRN) over Generalized-fading channels. In this letter, highly simplified, novel asymptotic expressions for the average symbol error rate and the outage probability of MCRNs over Generalizedfading channels (with arbitrary fading parameters) are presented. Both theoretical analysis and simulations explicitly reveal that for MCRNs over Generalized-fading channels, a diversity order of 2 is achieved when shadowing is more severe than fading and a diversity order of 2 is achieved when fading is more severe than shadowing (where and represent the Generalized-distribution shape parameters).

Research paper thumbnail of H. Y. Lateef, D. C. Mclernon and M. Ghogho, "Performance Analysis of Multi-user, Multi-hop Cooperative Relay Networks Over Nakagami-m Fading Channels," IEEE Communications Letters, 2011.

Research paper thumbnail of H. Y. Lateef, M.ghogho and Des C. Mclernon, "Performance Analysis of multi-hop Cooperative Relay Networks Over Generalized-K Fading Channels," in Proc. IEEE Australian Communications Theory Workshop (AUSCTW'11), Melbourne, Australia, pp. 71-76, Feb. 2011

Research paper thumbnail of H. Y. Lateef, M. Ghogho, and D. C. Mclernon, "Performance Analysis of Kth Opportunistic Relaying Over Non-Identically Distributed Cooperative Paths," IEEE SPAWC, Marakkech, Morocco, 2010.

Research paper thumbnail of H. Y. Lateef, D. C. Mclernon, and M. Ghogho, "Performance Analysis of Cooperative Communications with Opportunistic Relaying,"IEEE SPAWC, Marakkech, Morocco, 2010.

Research paper thumbnail of H. Y. Lateef, O. Waqar, D. C. Mclernon, and M. Ghogho, "Outage Probability Analysis of Cooperative Communication Systems over Gamma-Shadowed Nakagami-m Fading Channels," IEEE NGMAST, Cardiff, United Kingdom, pp. 251-255, 2009.

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