Although WiMAX, LTE, and WiFi provide wireless broadband connectivity, they have been optimized for different usage models: WiFi for very high-speed local area network connectivity and WiMAX, LTE for high-speed wireless cellular connectivity. By combining WiMAX, LTE, and WiFi technologies, service providers can offer better usability of the networks infrastructure and support for seamless mobility and roaming. The unique similarities between WiMAX, LTE, and WiFi networks that make the proposed synergy promising is these technologies are fully packet switching uses IP-based technologies to provide connection services to the Internet. This standards- and IP-based network approach provides compelling benefits to service providers to collaborate between these technologies.

This special issue is intended to foster state-of-the-art research in the area of WiMAX, WiBro, LTE, and WiFi networking, and the corresponding technical advances in the design and deployment of feasible network architectures and protocols, and to present novel results and solutions to solve various problems and challenges foreseen in WiMAX, LTE, and WiFi interworking. The special issue will cover the following topical areas but are not limited to them:

WiMAX, WiBro, MobileFi, LTE, and WiFi communications systems
Single/dual radio handover
Network architecture alternatives for interworking and integration
Heterogeneous wireless networks
Seamless vertical handover and session continuity
Multiradio coexistence and power management
Authentication, authorization, and accounting
Security issues
Common charging and billing
Quality of services (QoS)
Interworking using IMS, SIP, MIH, VCC, and UMA
IEEE802.11u, IEEE802.16g/j/m/h
Scenarios and usage cases
WiMAX,WiBro, LTE, and WiFi Interworking Testbed
Hybrid wireless mesh network
Applications, VOIP, video streaming, and so forth
IP Mobile, roaming, and mobility management
Core network architecture
Fixed-mobile convergence (FMC)
PHY, MAC, IP, and upper layers issues
Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/jcsnc/guidelines.html. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/, according to the following timetable:

Manuscript Due October 1, 2009
First Round of Reviews January 1, 2010
Publication Date April 1, 2010

Lead Guest Editor
Rashid A. Saeed, Telekom Malaysia R&D Sdn. Bhd. Lingkaran Teknokrat Timur, 63000 Cyberjaya, Selangor D.E., Malaysia
Guest Editors
Ahmed A.M Hassan Mabrouk, Department of Computer Science, International Islamic University Malaysia, Kuala Lumpur, Malaysia
Amitava Mukherjee, IBM GBS India, Salt Lake, Calcutta 700 091, India
Francisco Falcone, Página principal de la Universidad Campus de Arrosadía 31006 Pamplona, Navarre, Spain
K. Daniel Wong, Daniel Wireless LLC, Palo Alto, CA 94306, USA