Mobile telephony

About: Mobile telephony is a research topic. Over the lifetime, 38008 publications have been published within this topic receiving 553646 citations.

Managing One’s Availability to Telephone Communication Through Mobile Phones: A French Case Study of the Development Dynamics of Mobile Phone Use

Abstract: This paper provides empirical results concerning the negotiation of access and joinability by mobile phone users. It shows how access is embedded in a gift-giving economy (giving one’s number for example). It also shows that the more users make themselves available on the mobile phone, the more their mobile phone traffic increases (both incoming and outgoing). This remarkable result is discussed in terms of the reciprocity involved in the management of mobile phone relationships.

SBVLC: Secure Barcode-Based Visible Light Communication for Smartphones

Abstract: 2D barcodes have enjoyed a significant penetration rate in mobile applications. This is largely due to the extremely low barrier to adoption—almost every camera-enabled smartphone can scan 2D barcodes. As an alternative to NFC technology, 2D barcodes have been increasingly used for security-sensitive mobile applications including mobile payments and personal identification. However, the security of barcode-based communication in mobile applications has not been systematically studied. Due to the visual nature, 2D barcodes are subject to eavesdropping when they are displayed on the smartphone screens. On the other hand, the fundamental design principles of 2D barcodes make it difficult to add security features. In this paper, we propose SBVLC—a secure system for barcode-based visible light communication (VLC) between smartphones. We formally analyze the security of SBVLC based on geometric models and propose physical security enhancement mechanisms for barcode communication by manipulating screen view angles and leveraging user-induced motions. We then develop three secure data exchange schemes that encode information in barcode streams. These schemes are useful in many security-sensitive mobile applications including private information sharing, secure device pairing, and contactless payment. SBVLC is evaluated through extensive experiments on both Android and iOS smartphones.

System for providing banking services by use of mobile communication

Abstract: A system for providing banking services by use of a mobile communication system, in which a variety of financial transactions including inquiry of at least one financial account of at least one financial institution, transfer and remittance, and loan and its interest payment are processed by the mobile communication system. The system includes: the mobile communication system, provided with an integrated circuit (IC) card and a memory device to which a banking application is installed, for transmitting and receiving data by wireless, the IC card being stored with information on a personal identification number (PIN) and information related to financial accounts including a loan account. The banking application processing the financial transactions including the financial account inquiry, the transfer and remittance, and the loan and its interest payment by mobile banking; a base station transceiver system (BTS) for executing a wireless interface with the mobile communication system and a base station controller (BSC) for performing call processing and for providing a core network interface with the BTS. A packet data switching network (PDSN) for providing a packet data transfer service using a transmission control protocol/Internet protocol (TCP/IP); and at least one banking server for, when being requested to process the financial transactions including the financial transactions including the financial account inquiry, the transfer and remittance, and the loan and its interest payment by the banking application of the mobile communication system.

Recoverable mobile environment: design and trade-off analysis

Abstract: The mobile wireless environment poses challenging problems in designing fault-tolerant systems because of the dynamics of mobility, and limited bandwidth available on wireless links. Traditional fault-tolerance schemes, therefore, cannot be directly applied to these systems. Mobile systems are often subject to environmental conditions which can cause loss of communications or data. Because of the consumer orientation of most mobile systems, run-time faults must be corrected with minimal (if any) intervention from the user. The fault-tolerance capability must, therefore, be transparent to the user. The paper presents recovery schemes for the failure of a mobile host. It portrays the limitations of the mobile wireless environment, and their impact on recovery protocols. The adaptation of well-known recovery schemes are presented which suit the mobile environment. The performance of these schemes has been analyzed to determine those environments where a particular recovery scheme is best suited. The performance of the recovery schemes primarily depends on: the wireless bandwidth; the communication-mobility ratio of the user; and the failure rate of the mobile host.

Dynamic information on demand

Abstract: Systems and methods are presented for providing dynamic temporally and geographically relevant information or content to mobile communications devices, in which a profile and a current location are obtained for a mobile device, profile specific geographically and temporally relevant content from a data store according to the user profile, the current user location, and the current time, and the content is provided to mobile communications device via a communications network.