Abstract:
The present invention relates to a method and system for mobile location estimation in which range measurements between the mobile station and a base station are discriminated as being either from a base station which is line of sight with the mobile station or a base station that is non-line of sight with the mobile station (22). Non-line of sight error present in range measurements from base stations that are non-line of sight with the mobile station is corrected (24). A reconstructed line of sight range measurement is established from the correction of the non-line of sight error. The reconstructed line of sight range measurements can be used with range measurements of base stations determined to be line of sight for accurately locating the mobile station (26).
Abstract:
A communication system (100) includes at least one mobile communication device having a message indicator device, and a voice mail messaging center (104). The voice mail messaging center includes a voice mailbox (112) associated with the at least one mobile communication device (118). The voice mail messaging center directs a call to the voice mailbox associated with the at least one mobile communication device for recording a message when the mobile communication device is unable to receive the call. The voice mail messaging center optimizes communication from the messaging center to the mobile communication device when a voice mail message is recorded and the voice mailbox previously contained no messages, a second message indicator when the voice mailbox is full, and a third message indicator when the voice mailbox becomes empty.
Abstract:
A system for providing fixed wireless access to standard telephony device is disclosed. A subscriber unit comprising a telephony interface for connecting to a standard telephony device, and a transceiver for establishing a communication link with a wireless network is used for providing telephony service to standard telephony device. Dual tone multiple frequency (DTMF) tones produced by said standard telephony device are sent to the wireless network, either directly or indirectly in the form of digit messages corresponding to the dialed digits, after a call set up message is sent. The subscriber unit sends a special set up message which identifies the subscriber unit as a terminal which sends digits on a digit by digit basis. A wireless network component (e.g. an MSC) is configured to identify such a set up message and upon receiving such a set up message collects and analyses digits sent by a subscriber unit on a digit by digit basis in order to provide a service feature or to connect a call._
Abstract:
A mobile telephone programming and accounting system (10) that includes an integrated hardware system (12) interlinking a telephone unit (30), a telephone interlink receiver (28), and a central processing unit (14) connected to the interlink receiver (28).
Abstract:
A modularly structured communication system for use in a localized area such as within a hospital environment that provides wireless transceiver units for effectively immobile individuals such as patients (22-40), wireless transceiver units for completely mobile individuals such as health care providers (16-20), stationary satellite units proximate to an area within which the patient and health care provider units would operate (12, 14), and finally, a master command unit (10) typically located in a single centralized position within the hospital that ties together the satellite units and thereby ties together each of the modular wireless transceiver units within the system. The master control unit is primarily responsible for maintenance of data on the elements within the system and for communication of telephone transmissions from within the system to the outside world through modem and/or telephone switching lines.
Abstract:
The invention relates to a method for controlling a subscriber station (MS1, MS2) operating on a direct mode channel in a mobile radio system, this mobile radio system comprising a radio network (107, 101, BS) with at least one base station (BS) and subscriber stations (MS1, MS3), and at least one subscriber database (DB), and further, at least one repeater station (RS), which forwards traffic between said at least one base station (BS) and the subscriber stations (MS1, MS2) operating on a direct mode channel; in which method a subscriber station (MS1) is registered in a radio network via a base station (BS), said subscriber station (MS1) transmits a detachment message to the base station, and indicates that it is switching to operate on a direct mode channel. In order that the radio network would be able to control and communicate with the subscriber station switched to the direct mode channel, the identifier of the repeater station (RS) via which repeater station (RS) the subscriber station (MS) operating on the direct mode channel can be reached by the radio network is transmitted to the radio network, and the identifier of the repeater station (RS) is stored in said at least one subscriber database (DB) of the radio network.
Abstract:
A method and system for obtaining nutritional information over a telecommunications network (12) using a mobile telephone or mobile device (10). The method includes using a mobile telephone (10), the mobile telephone (10) in communication with the telecommunications network (12); inputting one or more food product identifications into the mobile telephone (10); transmitting the one or more food product identifications to a nutrition system centre (16) over the telecommunications network (12); receiving nutritional information relating to the one or more food product identifications from the nutrition system (16) centre over the telecommunications network (12); and viewing the nutritional information using the mobile telephone (10). The nutrition system centre (16) maintains and queries a database (28) to generate the nutritional information. The user receives the nutritional information to aid him or her in making ordering decisions for maintaining a healthy lifestyle.
Abstract:
The performance and ease of management of wireless communications environments is improved by a mechanism that enables access points (APs) to perform automatic channel selection. A wireless network can therefore include multiple APs, each of which will automatically choose a channel such that channel usage is optimized. Furthermore, APs can perform automatic power adjustment so that multiple APs can operate on the same channel while minimizing interference with each other. Wireless stations are load balanced across APs so that user bandwidth is optimized. A movement detection scheme provides seamless roaming of stations between APs.