Advanced Positioning and Location based services in 4G Mobile-IP Radio Access Networks

2004 IEEE 15TH IEEE International Symposium on personal, indoor and mobile radio communications (PIMRC 2004), Barcelona, Spain, 5-8 september 2004.This paper proposes an evolved architecture from 3G networks to provide basic and advanced positioning methods for location based services in mobile IPv6-based radio access networks. We start analyzing current status of location-based services (i.e. LBS or LCS) and architectures in 3G networks as well as state-of-the-art research on LBS and mobile Internet. Next we set the requirements the solution should fulfill. We continue proposing the evolved architecture for support of basic and advanced positioning methods, using MIPv6 and HMIPv6 as mobility scenario for the mobile IPv6 based RAN, describing element's functions and changes from current approaches as well as description of the dynamic behavior. We complete the proposal with a bandwidth analysis of the signaling, identifying issues when planning implementation of LCS services in the network

MIRAI Architecture for Heterogeneous Network

One of the keywords that describe next-generation wireless communications is "seamless." As part of the e-Japan Plan promoted by the Japanese Government, the Multimedia Integrated Network by Radio Access Innovation project has as its goal the development of new technologies to enable seamless integration of various wireless access systems for practical use by 2005. This article describes a heterogeneous network architecture including a common tool, a common platform, and a common access. In particular, software-defined radio technologies are used to develop a multiservice user terminal to access different wireless networks. The common platform for various wireless networks is based on a wireless-supporting IPv6 network. A basic access network, separated from other wireless access networks, is used as a means for wireless system discovery, signaling, and paging. A proof-of-concept experimental demonstration system is available

Innovations in Monitoring Vital Events:Mobile Phone SMS Support to Improve Coverage of Birth and Death Registration: A Scalable Solution

Civil Registration (CR) of births and deaths is an essential component of any health information system.\ud Globally, across low income countries, CR suffers from unacceptably poor quality coverage. This Health\ud Information Systems Knowledge Hub (HIS Hub) working paper summarises and reports the results, conclusions and outlook from a small six-month project that investigated the potential of introducing a mobile phone step into the routine CR system in a rural district in Tanzania. The project developed a computer application that could receive SMS messages—from existing basic mobile phones of community-based CR officers—and feed them directly to the District Registrar’s office and computer. The message contained the details from the birth or death notification form. The system provided instant access to notifications and automatic feedback to the Village Executive Officer (VEO) if the family that experienced the birth or death event failed to register the event for certification. It also prompted the VEO to follow up with the family by conducting a questionnaire, administered by mobile phone, to determine and communicate the reasons for the non-registration. The District Civil Registrar was also able to monitor trends in these notifications via a user-friendly webbased browser and dashboard. The system was tested for six months and validated against an independent prospective household surveillance system that monitors pregnancies, births and deaths in the same period. In summary, the findings showed that the routine CR system notified only 28% of total births in the period. Adding the SMS step increased this to 51% of births. The routine CR system notified only 2.1% of deaths in the period. Adding the SMS step increased this to 14% of deaths. The SMS step therefore made significant improvements in the notification step (and modest improvements in the registration step) of routine CR. However, both notifications and registrations still fell well short of reality at community level. The most important finding of this pilot is that the current CR system in at least the study district, and likely in most of rural Tanzania, is essentially unable to provide adequate registration coverage for births and deaths, and that coverage is so low that even log order improvements are insufficient to lift it to satisfactory levels (in excess of 90%). This, as yet, says nothing regarding the quality of the data. No overwhelming reason is provided by families for the low reporting rate, suggesting that the problems are highly systemic and will need a radical redesign of CR processes to solve. To the extent that similar problems prevail in other low-income countries, it is clear that whatever these processes will be, some form of scalable real-time mobile communication such as SMS will greatly facilitate coverage levels. This pilot shows\ud that such technology is feasible. But these results also emphasise the need for an end-to-end overhaul of the\ud architecture and processes of how CR systems are built and integrated into the information fabric of a country. Small incremental technical fixes will not suffice\u

Realtime routing and messaging in wireless networks

Wireless technology has rapidly expanded in recent years; however, until now, it is only used to extend services in wired networks, applications that can take full advantage of mobile communication have not appeared yet. In this thesis, a practical messaging application for mobile computing is presented and a realtime Zone Routing Protocol (ZRP) for underlying wireless networks is evaluated. Mobile Yellow page Messaging and Retrieval (MYMAR) system is a new application for self-organized IEEE 802.11 compliant WLANs which consist of one Base Station (BS) and several Mobile Stations (MS) in each WLAN segment. In this distributed free public-access mobile network, BSs provide yellow page-like local information, such as digital maps, business advertisements, and business locations, to enable mobile receivers to quickly determine driving direction and navigate facilities of an intended service. Users retrieve and navigate such information via a user-friendly, voice recognition based hand-free command system. Other services available are voice messaging between users and voice-activated global web wireless access. The basic architecture and system operation of this wireless application system is shown. A suitable routing strategy is also necessary to forward packets between WLAN segments. A realtime Zone Routing Protocol (ZRP), which combines proactive routing for in-zone traffic and on-demand routing for out-zone traffic, was implemented. Some optimal configurations, such as Early Detection/Termination and Backward Route Accumulation, were made to improve the ZRP performance in mobile wireless network. The processing time for each ZRP subtask was evaluated

Context-Awareness Enhances 5G Multi-Access Edge Computing Reliability

The fifth generation (5G) mobile telecommunication network is expected to support Multi- Access Edge Computing (MEC), which intends to distribute computation tasks and services from the central cloud to the edge clouds. Towards ultra-responsive, ultra-reliable and ultra-low-latency MEC services, the current mobile network security architecture should enable a more decentralized approach for authentication and authorization processes. This paper proposes a novel decentralized authentication architecture that supports flexible and low-cost local authentication with the awareness of context information of network elements such as user equipment and virtual network functions. Based on a Markov model for backhaul link quality, as well as a random walk mobility model with mixed mobility classes and traffic scenarios, numerical simulations have demonstrated that the proposed approach is able to achieve a flexible balance between the network operating cost and the MEC reliability.Comment: Accepted by IEEE Access on Feb. 02, 201

DIAMOnDS - DIstributed Agents for MObile & Dynamic Services

Distributed Services Architecture with support for mobile agents between services, offer significantly improved communication and computational flexibility. The uses of agents allow execution of complex operations that involve large amounts of data to be processed effectively using distributed resources. The prototype system Distributed Agents for Mobile and Dynamic Services (DIAMOnDS), allows a service to send agents on its behalf, to other services, to perform data manipulation and processing. Agents have been implemented as mobile services that are discovered using the Jini Lookup mechanism and used by other services for task management and communication. Agents provide proxies for interaction with other services as well as specific GUI to monitor and control the agent activity. Thus agents acting on behalf of one service cooperate with other services to carry out a job, providing inter-operation of loosely coupled services in a semi-autonomous way. Remote file system access functionality has been incorporated by the agent framework and allows services to dynamically share and browse the file system resources of hosts, running the services. Generic database access functionality has been implemented in the mobile agent framework that allows performing complex data mining and processing operations efficiently in distributed system. A basic data searching agent is also implemented that performs a query based search in a file system. The testing of the framework was carried out on WAN by moving Connectivity Test agents between AgentStations in CERN, Switzerland and NUST, Pakistan.Comment: 7 pages, 4 figures, CHEP03, La Jolla, California, March 24-28, 200