نتایج جستجو برای: gprs
تعداد نتایج: 1181 فیلتر نتایج به سال:
General Packet Radio Service (GPRS)—a bearer service to GSM—has been deployed worldwide, and is widely considered a technology precursor to the evolving third generation (3G) wireless networks. The general conception has been that while users will be exposed to faster wide-area wireless data access, experience gained from GPRS could well prove useful for 3G, and also for systems beyond 3G deplo...
With the development of agricultural production technology, characteristics that appear in the farmland information such as diversity, polytropy and dispersity. In order to solve the problems of obtaining quickly and long-distance transmission the farmland information, the paper proposes a farmland data acquisition system based on the GPRS technology. The system exerts GPRS network of the china...
We investigate, in this paper, the performance of service disciplines in General Packet Radio Service (GPRS) system. The GPRS system is a new additional GSM service, which provide packet switched data services over GSM network and a packet access to data networks. Using either best effort service or guaranteed performance service, the service discipline affects considerably the MAC layer perfor...
Efficient channel allocation is important for meeting the quality of service (QoS) requirements of both GSM voice calls and GPRS packets in integrated GSM/GPRS networks. In this paper, we propose a new dynamic channel allocation scheme with guard channel, channel deallocation/re-allocation for voice call and packet queue for GSM/GPRS networks. An analytic model with general GPRS channel require...
In a Universal Mobile Telecommunications System (UMTS), a user equipment (UE) can access IP multimedia services through IP Multimedia Subsystems (IMS). In addition to passing IMS authentication, called IMS AKA, this UE also needs to pass General Packet Radio Service (GPRS) authentication, called 3GPP AKA, since the data of the IMS service is transmitted through a GPRS network. Many steps in the...
GPRS and EDGE are narrowband wireless data services that are deployed by GSM operators to provide higher data rate. This paper provides a set of measurements that are used to evaluate, from user perspective, GPRS and EDGE services in the State of Kuwait. The Measurements are taken in the Alsalam suburb which has no PSTN network. Measurements show that the GPRS performance is worst than the anal...
This paper presents an evaluation of the security architecture employed in the General Packet Radio Services (GPRS). More specifically, the security measures applied to protect the mobile users, the radio access network, the fixed part of the network, and the related data of GPRS are presented and analyzed in details. This analysis reveals the security weaknesses of the applied measures that ma...
The General Packet Radio Service (GPRS) of the Global System for Mobile Communications (GSM) is designed for packet switched data transmission and is a mean of mobile access to packet data networks, e.g. the Internet. Packet switched transmission is inherently better suited for bursty traffic as it is generated by typical Internet applications primarily WWW, FTP and e-mail. A simulator is prese...
General Packet Radio Service (GPRS) is a complex data network which upgrades current second generation GSM networks, offering true high-speed internet (IP) and network connectivity over existing GSM cellular networks. The increasing population of mobile users leads to congestion problems in these systems, and motivates the development of more efficient management schemes. This project deals wit...
The General Packet Radio Service (GPRS) is due to be implemented in current mobile networks, introducing a whole new range of mobile data applications and services. Considerable effort has been devoted to test its capabilities and system performance. In this paper, a modular and high-speed GPRS simulator is presented. In order to validate the simulation method, the GPRS link layer performance i...
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