In this paper, we evaluate the performance of the logical link control (LLC) layer and the Transmission control protocol (TCP) layer in General Packet Radio Service (GPRS) networks. We evaluate the uplink throughput and delay performance of GPRS-LLC protocol with radio link control (RLC) layer using block level retransmission (BLR), as defined in the current GPRS standards, and compare it with ...

In a world of increasing mobility, there is a growing need for people to communicate with each other and have timely access to information regardless of the location of the individuals or the information. With the advent of moblle technology, the way of communication has changed. The gira system is basically a mobile phone technology service. In this paper we discuss about a novel local area ne...

Simultaneous operation of multiple network interfaces can benefit mobile devices with diverse network interfaces. This paper outlines an IP-level network activation strategy that aims at optimum use of the complementary features of the underlying networks. A key design issue in such strategies is the energy cost of different network interfaces. As a step towards validating and fine-tuning our s...

Future security measures will create comfortable living environments that are embedded with a wide range of intelligent functionalities including home computing, entertainment, health care and security. These place stringent requirements on the home networking architecture which integrates various existing technologies for monitoring and control for future high security needs. This paper discus...

The lithium battery in the new energy system works wilderness environment, and its data remote monitoring is often realized based on wireless communication, this transmission method needs to set up exclusive base stations, which costly. General Packet Radio Service (GPRS) short message communication realizes through satellite without setting stations. Based above situation, a GPRS designed, con...

Energy efficiency in buildings and facilities has become an important part of the efforts for reducing environmental pollution. In order to develop strategies for efficient allocation of energy resources aimed at reducing power consumption, certain electrical quantities needed for analysis must be measured and monitored. In this paper, we propose a low-cost architecture of the remote electrical...

This paper describes an investigation into the effects of coding and modulating GPRS data, on the output RF measurement. The thrust of the work has been to look at the effect on the RF output when different types of pseudo random sequences with different lengths and different phases are fed at the input. The paper also provides an overview of the GPRS system in terms of it’s system architecture...

In this paper we evaluate the performance of data users in a GSM/GPRS system using queuing analysis and the QDB approach. GPRS has been introduced in GSM as a proposed data packet service over the air interface. Currently GPRS uses a fixed number of time slots, which are not shared with GSM voice users. Therefore the QoS of GSM users that are circuit switched is decreased. Here we propose a com...

This paper gives a general layout of subsystem operation used for the rolling stock traffic coordination. A principle of selection of information technologies applied for the realization of the communication and data transfer system has been described. GSM and GPRS technologies that are used for the transmission of navigation information on a vehicle locus and for the information exchange in th...