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An In-depth Look At Wireless WAN Security: Cellular Digital Packet Data Networks And Their Security Issues
White Papers A CDPD network is an overlay service on top of the existing AMPS (Advanced Mobile Phone Systems) cellular voice networks. Cellular Digital Packet Data (CDPD) network is one of the most common wireless infrastructures that are being implemented...
[November 7, 2003, 1:03]
Cellular GSM-GPRS/GNSS GPS Networks Synchronization
White Papers The protocol has been implemented in a special modified G83 DAIT cellular phone and in a special modified U-blox GPS receiver. Original research objectives are the implementation of the tight full synchronization between GSM-GPRS and GPS networks.
[October 13, 2006, 6:21]
Spectrum Management In Coordinated Dynamic Spectrum Access Based Cellular Networks
White Papers This paper focuses on spectrum management in next generation cellular networks that employ Coordinated Dynamic Spectrum Access (DSA). Based on these concepts, the authors investigate practically realizable candidate algorithms for spectrum...
[December 7, 2006, 0:00]
The Tradeoff Between Coverage And Capacity In Dynamic Optimization Of 3G Cellular Networks
White Papers This paper shows that load balancing operations for 3G cellular networks need to consider the tradeoff between network coverage and capacity. As a result, performance improvements through network reconfiguration always have to be measured against...
[April 7, 2005, 3:00]
Impact Of Network Load On Forward Link Inter-Cell Interference In Cellular Data Networks
White Papers Cellular data networks allow mobile terminals to access the Internet for data communication. Some examples of such cellular data networks are the CDMA-HDR (High Data Rate) networks, and the 1xEVDV (1x Evolution Data and Voice) networks.
[June 16, 2006, 0:00]
Self-Adaptive Routing Protocols For Integrating Cellular Networks, WLANs And MANETs
White Papers A growing need to have ubiquitous connectivity has motivated the research to provide continuous connection between various wireless platforms such as cellular networks, WLANs and MANETs. This paper considers integration at the routing layer and...
[July 17, 2008, 1:19]
Location Area Planning In Cellular Networks Using Simulated Annealing
White Papers Location area (LA) planning plays an important role in cellular networks because of the trade-off caused by paging and registration signaling. The upper bound on the size of an LA is the service area of a mobile switching center (MSC).
[August 14, 2003, 16:19]
Issues In Integrating Cellular Networks, WLANs And MANETs: A Futuristic Heterogeneous Wireless Network
White Papers Popularity of the wireless communication systems can be seen almost everywhere in the form of cellular networks, WLANs and WPANs. This paper envisions an architecture for the state-of-the-art heterogeneous multi-hop networks, and identifies...
[January 5, 2006, 0:01]
Improving TCP Performance For Wireless Cellular Networks By Adaptive FEC Combined With Explicit Loss Notification
White Papers This paper proposes a new adaptive FEC scheme combined with ELN (Explicit Loss Notification) that was proposed for improving TCP performance in wireless cellular networks. In the method, transmission errors on the wireless link are measured at the...
[December 6, 2007, 0:01]
Interoperability Of Wi-Fi Hotspots And Cellular Networks
White Papers The widespread deployment of Wi-Fi hotspots and wide area cellular networks opens up the exciting possibility of interoperability between these types of networks. Interoperability allows a mobile device to dynamically use the multiple network...
[May 24, 2006, 1:00]
An Analysis Of The Effects Of Mobility On Bandwidth Allocation Strategies In Multi-Class Cellular Wireless Networks
White Papers In this paper we present a multi-cell analytic model for multi-class cellular networks. We introduce control strategies from non-mobile networks and examine them in a mobile environment. We investigate the effects subscriber mobility has on...
[August 14, 2003, 16:19]
Managing IPv4-to-IPv6 Transition Process In Cellular Networks And Introducing New Peer-to-Peer Services
White Papers Hence, this paper analyzes, how the transition process in Third Generation Partnership Project (3GPP) cellular networks can be efficiently handled. This paper describes the acute problems with the current Internet Protocol (IPv4) especially from...
[October 27, 2004, 3:00]
Wireless Profiled TCP Performance Over Integrated Wireless LANs And Cellular Networks
White Papers An analytical framework for studying the performance of Wireless Profiled TCP (WP-TCP) flows over the integrated wireless LAN and cellular networks is proposed. The framework can be used to analyze the short-term performance during vertical...
[December 6, 2007, 0:01]
Mining Call And Mobility Data To Improve Paging Efficiency In Cellular Networks
White Papers Locating mobile users and devices efficiently is a critical operation in cellular networks. Specifically, it mines more than 300 million call records from a large cellular operator to characterize user mobility and create mobility profiles.
[February 29, 2008, 0:02]
Dynamic Optimization In Future Cellular Networks
White Papers With multiple air-interface support capabilities and higher cell densities, future cellular networks will offer a diverse spectrum of user services. Bell Labs is pursuing efforts to realize such algorithms with research on near-term approaches that...
[December 13, 2006, 0:00]
A Simulation Environment For Analysis Of QoS And Signaling Load In Mobile Cellular Networks
White Papers This paper presents an implementation of a simulation tool for mobile cellular networks that uses a mobility model based on users profile, regions and time period characteristics. CELSA1 (Cellular Signaling Analyzer) is used for study of signaling...
[August 23, 2007, 1:00]
Migrating M2M Applications To IP-Based 2.5G And 3G Cellular Networks
White Papers This white paper will explore the nature of the Internet and IP-based cellular networks, and relate them to how Internet protocols can be used to the maximum benefit for M2M applications. It will review the features of Connect One's iChip and...
[July 27, 2007, 2:56]
Wireless IP Through Integration Of Wireless LAN And Cellular Networks
White Papers One interim way to bypass this limitation is to use Wireless Local Area Networks (W-LAN) in cooperation with cellular networks. In order to provide Internet connectivity over a wide geographical area, it is necessary to utilize the advanced...
[January 18, 2006, 0:01]
Artificial Hygiene: Non-Proliferation Of Viruses In Cellular Networks
White Papers One should be prepared to fight against viruses in the cellular networks. In this paper the authors have proposed a novel philosophy in cellular network called Artificial Hygiene (AH), which is virus neutral and will work at the class level.
[July 11, 2008, 1:20]
Tradeoff Between Coverage And Capacity In Dynamic Optimization Of 3G Cellular Networks
White Papers For 3G cellular networks, capacity becomes an additional objective along with coverage when characterizing the performance of high-data-rate services. Since network capacity depends on the degree traffic load is balanced over all cells, changing...
[December 7, 2006, 0:00]
