Abstract: A wireless network includes a current coordinator, at least one device which is currently associated with the wireless network, and a device selected as a new coordinator among the at least one device by the current coordinator. The current coordinator transmits a handover request message to the new coordinator; receives a handover response message in response to the handover request message from the new coordinator, the handover response message including a reason code field that is set to “success”; and broadcasts one or more beacons, each beacon including identification information which identifies the new coordinator and number information which indicates a number of remaining beacons that the current coordinator will broadcast before a handover occurs. The number information included in a last beacon among the one or more beacons is set to “0,” and the new coordinator broadcasts a beacon after receiving the last beacon from the current coordinator.

Abstract: A communication device is configured to receive messages. The communication device may comprise a display screen upon which messages are displayed. A microprocessor configured to execute at least one message management program on the communication device, filters incoming messages. The message management program comprising a message filter application filters messages based on a comparison of sender identification data associated with a message to approved sender identification data.

Abstract: A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. The device provides output in the form of a default output and a number of variants. The output is based largely upon the frequency, i.e., the likelihood that a user intended a particular output, but various features of the device provide additional variants that are not based solely on frequency and rather are provided by various logic structures resident on the device. The device enables editing during text entry and also provides a learning function that allows the disambiguation function to adapt to provide a customized experience for the user. The disambiguation function can be selectively disabled and an alternate keystroke interpretation system provided.

Abstract: A system for handling special number calls placed from a calling instrument using a text messaging format includes: a plurality of message handling units configured in at least one communication network accessible by the calling instrument. At least one selected message handling unit of the plurality of message handling units operates to recognize an extant call placed from the calling instrument using a special number and expressed in the text messaging call format. The plurality of message handling units cooperates to effect querying the calling instrument to ascertain a substantially pinpoint geographic location of the calling instrument substantially contemporaneously with the extant call. The plurality of message handling units cooperates to use the geographic location for routing the extant call to at least one selected special number answering station coupled with the at least one communication network and situated generally proximate with the geographic location.

Abstract: A linear least squares (LLS) estimator provides a low complexity estimation of the location of a mobile terminal (MT), using one of the fixed terminals (FTs) as a reference FT to derive a linear model. A method for selecting a reference FT is disclosed, which improves the location accuracy relative to an arbitrary approach to selecting the reference FT. In addition, a covariance-matrix based LLS estimator is proposed in line-of-sight (LOS) and non-LOS (NLOS) environments to further provide accuracy, taking advantage of the correlation of the observations. Different techniques for selecting the reference FT under non-LOS (NLOS) conditions are disclosed. A map-based two-stage LLS estimator assists in selecting the reference FT under NLOS conditions.

Abstract: A base station (101) for a cellular communication system comprises a transceiver (301) which receives measurement reports from a plurality of user equipments (107) served by the base station (101). The measurement reports comprise receive signal quality indications (such as receive signal levels for pilot signals) for neighbor cells (A-F) of the base station (101). An overlap processor (301) determines a cell overlap indication for each of a set of neighbor cells in response to the receive signal quality indications and a handover control processor (305) performs handover control in response to the cell overlap indications. The invention may allow improved handover performance and may increase the likelihood that the target handover cell can continue to support the user equipment (101) following handover. Particularly advantageous performance can be achieved when used for congestion relief of cells.

Abstract: In the public WLAN systems, reliable user re-authentication for mobility support is an essential step. However, re-authentication during handoff procedures causes long handoff latency which deteriorates the quality of service specifically for real-time multimedia applications. One possible solution is to authenticate the Mobile Node (MN) in advance with all the neighboring Access Points (APs) and distribute the Session Keys to them. However, the key issue is how to optimally and efficiently select the neighboring APs. In the preferred embodiments, we propose a system that takes into account the user current “Geo-Location”, “Mobility Pattern” and “Application Running on MN”; estimates the “Expected Mobility Zone” (EMZ) and selects an appropriate set of candidate APs corresponding to the MN's geo-location. The EMZ may comprise of APs belonging to “Intra-domain”, “Inter-domain” or “Inter-technology Networks” (e.g., WLAN, WiMAX, and Cellular etc).

Abstract: To use the supplementary services of a conventional mobile communication service, such as Short Message Service (SMS) and Voice Mail System (VMS) service, there are problems in that an access method to each service must be known and several steps must be undergone. The present invention relates to a method and apparatus for sending voice messages in a mobile communication network and, more particularly, to a method and apparatus that gain access to the service providing page of the wireless Internet in such a way as to input the telephone number of a counterpart and a wireless Internet access key, and send a voice message to the counterpart.

Abstract: A controlling party can set limitations on a controlled party's access to applications operating on the controlled party's wireless mobile communication device. The controlling party can effectuate these limitations via various different mechanisms. In one instance, the controlling party uses another wireless communication device to effectuate the limitations. In another instance, the limitations are effectuated by the controlling party's operation of a data processing apparatus connected by a wired data communication bus to the controlled party's wireless mobile communication device. In a still further instance, the controlling party effectuates the limitations by accessing a website supported by a web server.

Abstract: A method may include receiving a multimedia messaging service (MMS) message from a sending device, the MMS message being addressed to a terminating device. A notification may be sent to the terminating device that the MMS message is available. A user agent profile may be received from the terminating device, the user agent profile including a network indicator to indicate the type of network currently servicing the terminating device. It may then be determined if transcoding of the MMS message is required based on the type of network indicated in the user agent profile and attributes of the MMS message.

Abstract: Disclosed is a method and system for use of a trusted server such as an over-the-air provisioning server to facilitate mobile location determination. If a mobile location server (MLS) sends a location-determination message to a mobile station and does not receive a response back from the mobile station, there is a chance that the mobile station is not provisioned with a correct address of the MLS and that the mobile station therefore did not respond. To help jump start the location-determination process, the MLS may respond to that situation by instead causing a trusted server such as an over-the-air-service-provisioning (OTASP) server to send a location-determination message to the mobile station, triggering a response from the mobile station.

Abstract: The present invention relates to Assisted Global Positioning System (AGPS) high accuracy positioning in unknown cell areas. By using an approach of three alternative steps a reference position, needed for AGPS positioning, is determined. The first step involves using the location of any neighboring cell. The second involves using the location of a cell within the same Location Area as the cell serving the portable communication device to position. The third step comprises determining a fixed point within the same geographical area as the Serving Mobile Location Center (SMLC) is serving, and using this fixed point as a reference location. Using the three-step approach the AGPS positioning can be optimized, providing a possibility to position, for instance a mobile phone, by AGPS even though the location of the cell serving the phone is unknown to the positioning node operating the serving cell.

Abstract: A mobile device including a first body and a second body slidably and tiltably coupled. The second body can be arranged to a first location, at which the second body overlaps the first body, and a second location, at which the second body is tilted with respect to the first body after having been fully slid from the first location. Accordingly, the mobile device may improve portability and convenience in use.

Abstract: A user equipment (UE) in a cellular communication system tracks neighbor cells by periodically performing a signal measurement process and periodically performing a signal tracking process. Neighbor cells are ranked according to measured signal level, and the number of cells that are tracked is variable, and is based on the stability of the radio environment in which the UE is operating. The rate at which a neighbor cell changes from the status of not being the strongest neighbor cell to the status of being one is an indicator of environment stability. When a neighbor cell newly becomes the strongest ranking neighbor cell, the ranking that that neighbor cell had a predetermined time period ago can be used as an indicator of how many neighbor cells to track. The predetermined time period can be an average amount of time that it takes to track a neighbor cell.

Abstract: A system and method automatically routes in-vehicle emergency calls to an automatic crash notification (ACN) call center using information provided by the calling mobile device in the call set up message. An operator at the ACN call center is presented with an identification of a public safety answering point (PSAP) that serves the location of the vehicle. The ACN operator may then conference in the PSAP if needed. The provided information is displayed at both the ACN operator's position and at the PSAP. Alternatively, the call is routed to the PSAP first or to both the PSAP and the ACN call center simultaneously.

Abstract: A combined base station controller (12) and base transceiver station (14) comprises a selector distribution unit (SDU, 20), a main call control (MCC, 22) coupled to the SDU, a radio call control (RCC, 18) coupled to the MCC, and a channel element control (CEC, 16) coupled to the RCC.

Abstract: A moving body terminal is basically provided with a position information acquiring section, a receiving section and a control section. The position information acquiring section is configured to acquire position information indicating a current position of the moving body terminal. The receiving section is configured to receive from an information providing apparatus simple map information which includes information transmission determining information indicating an information transmission unnecessary region of the simple map information where the position information of the moving body terminal is not required to be transmitted from the moving body terminal to the information providing apparatus.

Abstract: A communication system allocates a discrete line between a base station and each terminal device that allows discrete communication in a time span equivalent to several frames. The communication system includes a base station that has a processing function unit processing a physical layer using a given data format, and terminal devices each using an up-link line allocated by the base station. In the system, the base station and each terminal device communicates with each other by the orthogonal frequency division multiplexing method. The base station sends out a preamble signal cyclically, and has a means that sends out a vacant discrete connection identifier for identifying a vacant up-link line for a terminal device to send data to the base station when the base station receives an up-link line request from the terminal device.

Abstract: Methods and systems for slow associated control channel signaling are disclosed. An example method for securing communications in a mobile network disclosed herein comprises transmitting a first variant of a message of a first type on a first slow associated control channel (SACCH) before ciphering is started on the first SACCH, and after ciphering is started on the first SACCH, transmitting a second variant of the message of the first type on the first SACCH, and subsequently transmitting the second variant of the message of the first type on the first SACCH, wherein the subsequently transmitted second variant of the message of the first type is the next transmitted message of the first type on the first SACCH.

Abstract: In a method for providing Location Based Services (LBS) in a mobile communication system, upon receipt of a location trigger at an LS for requesting location information of an MS from a location client, the LS transmits an authentication request message for requesting an ID of an Anchor Authenticator (AA) for the MS to an Authorization, Authentication and Accounting server (AAA), which transmits an authentication response message to the LS. The LS transmits an LCID request message for requesting an LCID of an LC for the MS to the AA, which AA transmits an initiate MS paging request message to an APC. The APC detects a serving LC of the MS and transmits an LCID to the AA, which transmits an LCID response message to the LS, which transmits an MS location report request message to the serving LC. The LC transmits an MS location report response message to the LS.