نتایج جستجو برای: gprs
تعداد نتایج: 1181 فیلتر نتایج به سال:
Introduction: The General Packet Radio Service (GPRS) is a packetoriented extension to the Global System for Mobile Communications (GSM) that supplies higher data rates and sharing of radio resources. The performance of the Internet protocols in GPRS is dependent not only on the quality of the radio link, but also on buffering in the GPRS network. According to [1–3], the over-sized network buff...
In this paper, the Wireless Application Protocol (WAP) as one application of mobile data services is examined with the aim to give guidelines for the dimensioning of next generation mobile radio networks. The performance of WAP-based applications over GPRS is evaluated in scenarios where the GPRS radio resources are shared with conventional Internet applications like WWW and e-mail. Simulation ...
General packet radio service (GPRS) provides efficient access to the integrated services Internet from wireless networks. When the GPRS-attached mobile station attempts to send or receive data, a packet data protocol (PDP) context shall be established. The GPRS session management (SM) supports the PDP context handling, which consists of PDP context activation, deactivation, and modification pro...
This paper presents a discrete-event simulator for the General Packet Radio Service (GPRS) on the IP level. GPRS is a standard on packet data in GSM systems that will become commercially available by the end of this year. The simulator focuses on the communication over the radio interface, because it is one of the central aspects of GPRS. We study the correlation of GSM and GPRS users by a stat...
With reference to the General Packet Radio Service (GPRS), an extension of the Global System Mobile Communication (GSM) addressing packetoriented traffic, this paper contributes to the analysis on the service accomplishment level perceived by GPRS users. The proposed modeling approach builds separately the GPRS and user models; the focus is on the GPRS access random procedure on one side, and d...
The sharing of resources between different users and different services is a key concept of radio resources dimensioning in GSM/GPRS networks. In this paper we present dimensioning rules based on traffic evaluation and quality of service level for GSM/GPRS users, focused on two radio resources allocation strategies: CP (Complete Partitioning) and PP( Partial Partitioning).The quality of service...
This paper studies the performance of the three retransmission mechanisms (i.e., RLC/MAC, LLC and TCP) in a General Packet Radio Service (GPRS) network accessing the Internet. This assessment is done through the end-to-end performance evaluation of Internet applications such as HTTP and FTP over GPRS. A simulation platform including client Mobile Stations, Base Station Subsystems, GPRS Support ...
The Wireless Application Protocol (WAP) as one application of mobile data services is examined with the aim to provide guidelines for the dimensioning of next generation mobile radio networks. The performance of WAP-based applications over GPRS is evaluated in scenarios where the GPRS radio resources are shared with conventional Internet applications like WWW and e-mail. Simulation results for ...
UMTS is one step ahead from the 2.5G network GPRS and supports faster data rates with wide coverage area. GPRS and UMTS are already deployed in many countries but seamless handover between GPRS and UMTS still remains as a stumbling block for the service providers to fulfill the continuously increasing customer demand for internet and data access in the IP-based wireless network and to maintain ...
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