Mobile telephony

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

A ubiquitous mobile communication architecture for next-generation heterogeneous wireless systems

Abstract: Rapid progress in research and development of wireless networking and communication technologies have created different types of wireless systems (e.g., Bluetooth, IEEE 802.11, UMTS, and satellite networks). These systems are envisioned to coordinate with each other to provide ubiquitous high-data-rate services to mobile users. In this article, the architecture for ubiquitous mobile communications (AMC) is introduced that integrates these heterogeneous wireless systems. AMC eliminates the need for direct service level agreements among service providers by using a third party, a network interoperating agent. Instead of deploying a totally new infrastructure, AMC extends the existing infrastructure to integrate heterogeneous wireless systems. It uses IP as the interconnection protocol. By using IP as the gluing protocol, transparency to the heterogeneities of the individual systems is achieved in AMC. Third-party-based authentication and billing algorithms are designed for AMC. New mobility management protocols are also developed to support seamless roaming between different wireless systems.

Handling charging information in interworking structure of mobile communication and wireless local area networks

Abstract: When interworking two or more networks, such as a wireless local access network (WLAN) and a mobile communication network, user billing and service charging should be accurately collected and processed. To do so, certain types of service usage and charging information for certain users can be deleted depending upon the type of service provided to the user. Also, service usage and charging information can be periodically collected depending upon the type of service being provided. Furthermore, WLAN wireless access service usage and charging information, as well as mobile communication network service charging information can be collected upon correlation therebetween.

Mobile pay-per-call campaign creation

Abstract: In embodiments of the present invention improved capabilities are described for receiving a request from a mobile communication facility, receiving information relating to the mobile communication facility, generating at least one suggestion based at least in part on the request, and presenting at least one suggestion to the mobile communication facility. Improved capabilities are also described for receiving a keystroke combination from a mobile communication facility, receiving information relating to the mobile communication facility, generating at least one suggestion based at least in part on a letter combination associated with the keystroke combination and in part on the information relating to the mobile communication facility, and presenting at least one suggestion to the mobile communication facility.

Power and timing control methods and apparatus

Abstract: The use of multiple states of mobile communication device operation to allow a single base station to support a relatively large number of mobile nodes is described. The various states require different amounts of communications resources, e.g., bandwidth. Four supported states of operation are an on-state, a hold-state, a sleep-state, and an access-state. Each mobile node in the on-state is allocated communication resources to perform transmission power control signaling, transmission timing control signaling and to transmit data as part of a data uplink communications operation. Each mobile node in the hold-state is allocated communication resources to perform transmission timing control signaling and is provided a dedicated uplink for requesting a state transition and a shared resource for transmitting acknowledgements. In the sleep state a mobile node is allocated minimal resources and does not conduct power control signaling or timing control signaling. Data may be received in the on and hold states.

Methods and apparatus for operating mobile nodes in multiple states

Abstract: The use of multiple states of mobile communication device (14) operation to allow a single base station (12) to support a relatively large number of mobile nodes (14, 16) is described. The various states require different amounts of communications resources, e.g., bandwidth. Four supported states of operation are a on-state (404), a hold-state (410), a sleep-state (408), and an access-state (402). Each mobile node in the on-state (404) is allocated communication resources to perform transmission power control signaling, transmission timing control signaling and to transmit data as part of a data uplink communications operation. Each mobile node in the hold-state (410) is allocated communication resources to perform transmission timing control signaling and is provided a dedicated uplink for requesting a state transition and a shared resource for transmitting acknowledgements. In the sleep state (408) a mobile node is allocated minimal resources and does not conduct power control signaling or timing control signaling.