Title :
Random Access Design for UMTS Air-Interface Evolution
Author :
Ghosh, Amitava ; Ratasuk, Rapeepat ; Filipovich, Igor ; Tan, Jun ; Xiao, Weimin
Author_Institution :
Networks & Enterprise Bus., Motorola, Arlington Heights, IL
Abstract :
Comprehensive long term evolution of the Universal Mobile Telecommunications System (UMTS) specifications is currently ongoing to provide significant improvement over the current release. Important goals for the evolved system include significantly improved system capacity and coverage, low latency, reduced operating costs, multi-antenna support, flexible bandwidth operations and seamless integration with existing systems. To ensure low latency, users must be able to establish a connection to the network quickly. This paper provides a preliminary design and procedure for the random access channel used to establish a connection when the mobile is not yet time-synchronized to the network in the uplink.
Keywords :
3G mobile communication; antenna arrays; synchronisation; wireless channels; UMTS air-interface evolution; Universal Mobile Telecommunications System; comprehensive long term evolution; flexible bandwidth operations; multi-antenna support; random access channel; random access design; system capacity; time synchronization; 3G mobile communication; Bandwidth; Costs; Data communication; Delay; Downlink; Frequency conversion; Interference; Long Term Evolution; Timing;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.222