802.11-based wireless-LAN and UMTS interworking: requirements, proposed solutions and open issues
Computer Networks: The International Journal of Computer and Telecommunications Networking - Wireless IP through integration of wireless LAN and cellular networks
A Development Environment for OSA-Based Applications over the Interworked WLAN and Cellular Networks
Wireless Personal Communications: An International Journal
Development of Multi-Broadband Planar Wire Antennas for Wireless Applications
Wireless Personal Communications: An International Journal
3GTSM: a novel 3G terminals security model
IMCAS'07 Proceedings of the 6th WSEAS International Conference on Instrumentation, Measurement, Circuits and Systems
Data & Knowledge Engineering
802.11-Based Wireless-LAN and UMTS interworking: requirements, proposed solutions and open issues
Computer Networks: The International Journal of Computer and Telecommunications Networking - Wireless IP through integration of wireless LAN and cellular networks
Performance of next generation mobile communication systems
CIMMACS'05 Proceedings of the 4th WSEAS international conference on Computational intelligence, man-machine systems and cybernetics
Resource allocation based on traffic load over relayed wireless access networks
ICESS'05 Proceedings of the Second international conference on Embedded Software and Systems
Opportunistic packet scheduling over IEEE 802.11 WLAN
UIC'06 Proceedings of the Third international conference on Ubiquitous Intelligence and Computing
Hi-index | 0.00 |
The WCDMA air interface was initially designed to support a wide variety of services with different QoS requirements having a maximum bit rate of 2 Mb/s. In order to satisfy the future service and application needs several technical enhancements are being studied and standardized for WCDMA in 3GPP. Even with evolved WCDMA, there is a need for another public wireless access solution to cover the demand for data-intensive applications and enable smooth online access to corporate data services in hot spots. This need could be fulfilled by WLAN together with a high-data-rate cellular WCDMA system. WLAN offers an interesting possibility for cellular operators to offer additional capacity and higher bandwidths for end users without sacrificing the capacity of cellular users. The evolved WCDMA air interface will provide better performance and higher bit rates than basic WCDMA, based on first releases of the specifications. Eventually, evolution may not be the answer to all the needs, and come revolutionary concepts need to be considered. However, before some future wireless system can be regarded as belonging to 4G it must possess capabilities that by far exceed those of 3G systems like WCDMA. Judging from an application and services point of view, one distinguishing factor between 3G and 4G will still be the data rate. We could define that 4G should support at least 100 Mb/s peak data rates in full-mobility wide area coverage and 1 Gb/s in low-mobility local area coverage. Other possible characteristics of 4G need to be further studied.