This paper studies the database failure recovery procedure for cellular phone networks as part of the Electronic Industries Association/Telecommunications Industry Association Interim Standard 41 (EIA/TIA IS-41). Before the location information of the database is recovered, phone calls may be lost. The restoration process can be sped up by having the mobile phones to periodically confirm their ...

ion level Operational phase Support technique Described in Mobilitytransparent establish connections directory, trader, broker 1.11.1 maintain connections proxy, cache, data synchronisation, QoS manager 1.11.2 and 1.11.4.2 Mobilityrobust obtain information about environment profiling service, event service, QoS manager 1.11.4.1 and 1.11.4.2 perform adaptation content reduction, trader, type man...

Today, location-based applications and services such as friend finders and geo-social networks are very popular. However, storing private position information on thirdparty location servers leads to privacy problems. In our previous work, we proposed a position sharing approach for secure management of positions on non-trusted servers [1, 2], which distributes position shares of limited precisi...

A desirable location privacy protection scheme is important for securing node communication in a wireless local area network (WLAN). By pausing transmission or updating nodes independently, such a scheme can prevent nodes from being tracked or communication information from being snapped. This paper first introduces an ID Tracking Approach to show that nodes which swap IDs with other nodes in e...

Using the Internet as a foundation for wireless networking, there is currently a great deal of interest in providing IP networking support for mobile hosts. As a result of IP's reliance on the entire Internet address for host identiication, most proposals depend on a default route through the mobile host's home address, which makes for unnecessarily long routes. This paper introduces two concep...

We present a new hierarchical location update and routing scheme for a wide area mobile computing environment with scalability of network hierarchy. Our scheme provides nearly optimal routing for most communication bypassing the mobile host’s home network and home agent. We use simulation to compare our scheme with other schemes in both non-hierarchical and hierarchical network architectures. C...

Mobility Tracking operations in a personal communication service (PCS) system are signaling consuming. Several strategies have been proposed in the literature to reduce both, the location update (LU) and the paging (PG) costs. In this paper, we propose a location-tracking algorithm called three-location area (TrLA), combined with selective paging. In the TrLA, the mobile terminal (MT) allocates...

This paper addresses the issue of defining a location service suitable for very dynamic and highly populated networks (millions of users), where services might experience highly correlated peaks of traffic or synchronized access to specific servers. Mobile agent technology is flexible enough to solve the major problems, allowing the dynamic deployment of new application servers when needed. But...

In this paper we propose a fractional movement-distance-based location update scheme for Personal Communication Service PCS network. Indeed it is a location update scheme which is mobile terminal (MT ) dependent. Each MT stores a set of cells within a distance H , in terms of cells, from the cell where the last update occurred. The MT can then move freely within a ring distance Hl = H − 1 witho...