Location management deals with the procedure to update the current location of a mobile terminal (MT) and with the procedure to deliver incoming calls to that called MT. Basically, the performance evaluation of location management procedures are dependent on the MT’s mobility behavior, on the MT’s cell residence time and on the call arrival process to the MT. In the open literature, the typical...

Owing to the increasing population of mobile subscribers, the rapidly expanding signaling traffic has become a challenge to the mobility management in PCS networks. Multiple database schemes to reduce signal traffic and to solve the bottleneck problem of the single home location register (HLR) architecture have been proposed by many researchers. However, in most of the multiple location databas...

This paper introduces a mobility tracking mechanism that combines a movement-based location update policy with a selective paging scheme. Movement-based location update is selected for its simplicity. It does not require ea& mobile terminal to store information about the arrangement and the distance relationship of all cells. In fact, each mobile terminal only keeps a counter of the number of c...

The location management ability of a mobile agent system which enables a mobile agent to interact with others accurately by message passing beyond doubts stands important for the mobile agent system. At present, the location management of mobile agent consists of tracking phase and message delivery phase, both of which dutifully create or incur plenty of update messages and interaction messages...

Location management is a very important and complex problem in mobile computing. There is a need to develop algorithms that could capture this complexity yet can be easily implemented and used to solve a wide range of location management scenarios. This paper investigates the use of cellular automata (CA) combined with genetic algorithms to create an evolving parallel reporting cells planning a...

In a moving-object database system that supports continuous queries (CQ), an important problem is to keep the location data consistent with the actual locations of the entities being monitored, in order to produce correct query results. This goal is often difficult to achieve due to limited network resources. However, if an object is not required by any query, its value need not be refreshed. B...

Location service is an essential prerequisite for mobile wireless ad hoc networks (MANETs) in which the underlying routing protocol leverages physical location information of sender and receiver nodes. Fulfillment of this requirement is challenging partly due to the mobility and unpredictability of nodes in MANETs. Moreover, scalability and location information availability under various circum...

DoS Attack Mining in Sensor Node Replacement p. 11 Secure Cluster Header Election Techniques in Sensor Network p. 20 A Secure Data Aggregation Scheme for Wireless Sensor Networks p. 32 A Key Revocation Scheme for Mobile Sensor Networks p. 41 Workshop on Ubiquitous Processing for Wireless Networks Adaptive Binding Update Schemes in NEMO p. 50 An Information Aggregation Scheme of Multi-node in Ub...

Mobile IP has been developed to handle global mobility of mobile hosts. Mobile IP suffers from a number of drawbacks such as frequent location update, high signaling overhead, high handover latency, high packet loss rate, and requirement of infrastructure change. To treat these problems, we propose a new mobility management scheme by constructing dynamic service regions of Ad Hoc networks for r...

In mobile communications networks, periodic location area update (PLAU) is utilized to detect presence of a mobile station (MS). In 3GPP Technical Specifications 23.012 and 24.008, a fixed PLAU scheme was proposed for Universal Mobile Telecommunications System (UMTS), where the interval between two PLAUs is of fixed length. We observe that MS presence can also be detected through call activitie...