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To provide support for both data and voice is essential requirement of present mobile networks both LTE and UMTS networks. The proposed scheme in this paper differentiates assignment of requested calls on: speed, direction of motion and type of requested call. It also checks the used capacity threshold of LTE and UMTS before assignment. Different communication interfaces are used in hybrid mobile...
A power delivery connection between a power adapter and a power using devicegreater than 10 W and up to, but less than 240 W, is defined in this standard. A communicationslink between the power adapter and the mobile power-using device is also defined. Thecommunications may be used to coordinate the power delivery and provide identification betweenthe power adapter and the power-using device. While...
Qualitative online billing system performance is essential for cost-effective service providers. This paper presents the method of technical resources' distribution of the billing server based on the resource requirements of different types of service that takes into account the daily load statistics of different types of services and increases the revenue by providing an individual approach to services...
Wireless broadband access is a crucial part of any carrier and enterprise network. It has been a big argument among expertise which type of technology should be leveraged to fulfill the business needs. They argue which of the broadband technology is the best fit to propose solution and based on which criteria the right technology should be selected. In this paper we have elaborated on five key technologies...
So called open loop transmit diversity algorithms for the uplink of UMTS are a topic of recent studies within the 3rd Generation Partnership Project (3GPP). These algorithms use the power control commands of the fast power control mechanism as feedback information to iteratively determine the antenna weights, thus making them compatible with existing networks and procedures. The algorithms presented...
VoIP refers to communications services —voice and/or voice-messaging applications— that are transported via the Internet, rather than the public switched telephone network (PSTN). Rate of evolution of mobile services (such as data transfer service (GPRS, EDGE, 3G, and 4G LTE), audio & video player service, camera with higher resolution, GPS) is much higher than that of energy resources or energy...
An internal monopole antenna with compact size is proposed in this paper, which can be applied to mobile communications, and its frequency band covers GSM850, GSM900, DCS, PCS, UMTS bands simultaneously. It is comprised of a driven monopole and a coupled loop strip. By inserting a folded slit in the driven rectangular patch, two wide bands are achieved. The antenna has a small area of 48×12 mm2, and...
GSM and UMTS radio network will coexist for a long time. Interoperation of GSM and UMTS network will be a more important issue in the future. The authentication mechanism is key problem in GSM/UMTS inter-system. The verification method based on finite state machine is an important method to describe the state changes of complex and interactive system. It is simple formally and easy to describe target...
The energy consumption in mobile devices had gained more attention from infra-structure carriers and mobile manufacturers with the growth and expansion of third generation networks. The air interface resource allocation is the main factor of the energy consumption increase when the mobile is transmitting in background at anytime. When the air interface timeouts are reduced, there is a reduction in...
Spurred by the increasing demand for mobile broadband services and the growing number of devices supporting multiple radio access technologies (e.g., cellular, WiMAX, Wi-Fi, Bluetooth), much research is being done to improve the user experience while addressing issues related to network efficiency, congestion, interference, and cost to operators, service providers, manufacturers, and consumers alike...
With the development of 3G mobile technology, the mobile learning (M-Learning) platform research becomes the demand of the Times. Based on cloud service for convenient hardware resource allocation and ontology for good individual learning, the system architecture of mobile learning platform is proposed and some key techniques are studied in this paper. Finally, a kind of M-learning platform framework...
With the rapid development of 3G (third generation) network and more powerful functions of intelligent terminals(such as mobile phone, PDA), operators have gradually expanded their businesses from the business applications and mobile internet to other industries. This paper proposes a model for mobile medical service of intelligent terminals based on 3G network. The design and implementation of the...
With the rapid development of wireless network, online reading has become available in mobile reading devices. E-reader users can read and buy books through wireless network. Users can not only access to real-time comprehensive resource, but also access to book reviews, book recommendations etc. 3G communicating technology significantly improved data transfer speed which can meet network transmission...
Transmission networks, is the basic network for all types of telecommunication business and is being constructed on a large scale. How to effectively and fully utilize the network resources becomes the great concern in network construction and maintenance. Meanwhile, the transmission operators also put their emphasis on how to build the transmission networks with clearer network organization, richer...
Handover in LTE is purely hard handover. The use of break-before-connect handovers reduces the complexity of the LTE network architecture. However, the hard handover may result in data being lost. A Handover algorithm is needed for making handover decision. This decision may vary over time, depending on user's mobility. Many handover algorithms have been proposed. In this work, we optimized three...
A three-layer interleaver scheme, which is added into TD-SCDMA specification for the compatibility with satellite environment, is proposed for 3G mobile satellite communication systems. Simulation results for satellite channel are presented, which demonstrate that the third interleaver can improve the system performance significantly and satisfy the demands. The proposed interleaver design also provides...
With the construction of 3G networks and the development of mobile internet, mobile service is updating quickly. Meanwhile, the mobile phone viruses became the next target. Mobile phone viruses are a destructive procedure, just like the computer virus (program), which is also infectious and destructive. This will constraint the development of the smart mobile phones. The study of the characteristics...
We have developed a system using a combination of a multi-hop sensor network and 3G networks to support patients daily medication in home care. Each medication of a patient is represented by a sequence of close-open-close events of an off-the-shelf pill box, which are detected by a small Hall sensor. The system enables home visiting nurses to remotely monitor their patients' medication and to give...
Demographic transition and the decreasing number of medical experts in rural areas create a growing demand for tele-medicine systems that allow remote patient monitoring. Especially in the context of heart diseases, the possibility to transmit electrocardiograph (ECG) data in a streaming mode is of high interest. However, available cellular networks with protocols like GPRS, EDGE or UMTS are highly...
In today's cellular networks, it becomes harder to provide the resources for the increasing and fluctuating traffic demand exactly in the place and at the time where and when they are needed. Moreover, a cellular network which can cover indoor areas and hot-spots is a complicated and expensive task. Therefore, a new hierarchical topology is put forward to solve the problem, and the topology have application...
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