The SINR based handover for LTE with uplink consideration

In the scope of mobile systems and specifically the beyond 3G systems, handover presents a challenge due to the role it plays in achieving seamless mobility. In LTE, the current standardized mechanism is the received signal received power (RSRP) which is performed on the downlink path. Yet, due to the imbalances which are embedded between the uplink and the downlink path it necessary to take the uplink effect into consideration. To achieve this goal, a linear combination between the uplink and the downlink signal to interference and noise ratio (SINR) was considered. Results show that in the case of asymmetric traffic distribution between the two paths in an interference limited scenario, the algorithm provided no gain. Yet in case of high imbalance between the two paths (uplink & downlink) and in attempt to move to a cell with lower imbalance, the algorithm provided a limited gain in the average throughput of users for asymmetric traffic.

[1]  Markus Rupp,et al.  System Level Simulation of LTE Networks , 2010, 2010 IEEE 71st Vehicular Technology Conference.

[2]  Anders Furuskar,et al.  On the Use of Uplink Received Signal Strength Measurements for Handover , 2008, VTC Spring 2008 - IEEE Vehicular Technology Conference.

[3]  Jose Alonso-Rubio.  Self-optimization for handover oscillation control in LTE , 2010, 2010 IEEE Network Operations and Management Symposium - NOMS 2010.

[4]  Min Wang,et al.  Handover within 3GPP LTE: Design Principles and Performance , 2009, 2009 IEEE 70th Vehicular Technology Conference Fall.

[5]  P. Horvath,et al.  Impact of Intra-LTE Handover with Forwarding on the User Connections , 2007, 2007 16th IST Mobile and Wireless Communications Summit.

[6]  Rolf Sigle,et al.  Improvement of LTE Handover Performance through Interference Coordination , 2009, VTC Spring 2009 - IEEE 69th Vehicular Technology Conference.

[7]  Christopher Lott,et al.  Uplink-Downlink Imbalance in Wireless Cellular Networks , 2007, 2007 IEEE International Conference on Communications.

[8]  Asad Mehmood,et al.  Channel Estimation for LTE Downlink , 2009 .

[9]  Preben E. Mogensen,et al.  Performance Evaluation of Received Signal Strength Based Hard Handover for UTRAN LTE , 2007, 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring.