Abstract: A method and system for visualizing the propagation of a radio-frequency (RF) signal between a first wireless device and a second wireless device is provided. The method includes segmenting (304) the RF signal along its propagation path, based on the one or more characteristics associated with the propagation of the RF signal. The method also includes visualizing (306) the segments by using graphical representations.

Abstract: An apparatus and method are provided for reducing the output voltage in a power amplifier. The power amplifier contains a power supply, an amplifier stage, an impedance matching circuit, and a voltage reduction unit connected between the power supply and the amplifier stage. A power amplifier device within the amplifier stage has a gain bandwidth that covers multiple frequency bands. The output voltage of the power amplifier device is a composite voltage that contains fundamental and harmonic components that lie within the gain bandwidth. The voltage reduction unit reduces the supply voltage of the power amplifier device such that the composite output voltage is less than the breakdown voltage in the power amplifier device. The impedance matching circuit is coupled to the power amplifier device output and provides impedance matching for output signals of the fundamental and harmonic frequencies.

Abstract: Various embodiments are described for potentially improving coverage and/or the cell-edge outage rate and thereby the system capacity. Logic flow diagrams 10 and 20, in FIGS. 1 and 2, depict functionality performed by communication devices in the system. A first communication device, attempting to successfully receive (12) signaling from a source communication device, transmits (14) signaling indicating that it is requesting an interfering communication device to reduce transmissions that may be interfering with signaling from the source communication device. In response to this signaling from the first communication device (22), the interfering communication device reduces (24) transmissions based at least in part on what was indicated by the signaling from the first communication device. Thus, cooperative interference reduction may be achieved dynamically by receiving devices signaling other devices in the system to request interference relief when needed.

Abstract: A method and system of providing information associated with a previously visited location. The method can include the steps of monitoring the location of the mobile unit, receiving at the mobile unit information from one or more points of interest as the mobile unit engages the points of interest in which the information is associated with the points of interest and storing the information associated with the points of interest in a database that is accessible for a predetermined amount of time after the receipt of the information. The method can also include the step of storing the information into one of a predetermined number of categories based on how the mobile unit engages the points of interest.

Abstract: An apparatus and method for synchronization between uncoordinated Time Division Duplex (TDD) communication networks includes a first step (300) of measuring an interference level on channels available to a base station. A next step (302) includes choosing the channel having the lowest interference level. A next step (304) includes determining that the interference is from a base station. A next step (306) includes calculating an interference profile over the frame cycle. A next step (308) includes establishing a peak interference level. A next step (310) includes aligning the base station frame timing in response to the peak interference level.

Abstract: A generic access network infrastructure controller entity (400) including a controller communicably coupled to a signal transceiver. The controller is configured to send a handover failure message to a dual-mode wireless communication subscriber terminal in response to a handover request received at the transceiver wherein the handover failure message indicates that handover from the unlicensed mobile access network to the radio access network is currently not possible. The entity may also send a time value to the dual-mode wireless communication subscriber terminal in response to the handover request, wherein the time value indicate when the dual-mode wireless communication subscriber terminal may re-send the handover request.

Abstract: A base station (105) includes a scheduler (220) to determine a location of a user terminal (110) within a cell (125) of a wireless system (100). The cell has a cell boundary (125). The scheduler (220) also determines a subcarrier frequency diverse resource allocation for a call on the user terminal (110) in response to the location of the user terminal (110) being within a predetermined distance from an edge of the cell boundary (125). The scheduler (220) further determines a subcarrier frequency selective resource allocation for the call on the user terminal (110) in response to the location of the user terminal (110) being beyond a predetermined distance from the edge of the cell boundary. The base station (105) also includes a transceiver (215) to transmit the call according to the subcarrier frequency diverse resource allocation and the subcarrier frequency selective resource allocation.

Abstract: An apparatus [100] includes an application layer [205] to present an application behavior specification and a presentation specification. An engine layer [305] receives at least one input corresponding to a proposed modification to at least one of the application behavior specification and the presentation specification. A modality interface layer [215] interprets the at least one input and merges the at least one input into an output. An interaction management layer [210] (a) receives the output; (b) determines permitted modifications to the at least one of the application behavior specification and the presentation specification based on a set of pre-defined rules; and (c) generates a new application by modifying the at least one of the application behavior specification and the presentation specification at run-time based on the permitted modifications.

Abstract: A method and system (500) for optimizing transcoder resources in a multimedia session is disclosed. The method includes receiving (202) one or more SDP offers. The method further includes filtering (204) out media types from each of the one or more SDP offers based on a rating range. Further, the method includes selecting (206) one of the media types from each of the one or more SDP offers. The method further includes allocating (208) resources of one or more transcoders for transcoding the one of the media types.

Abstract: A method for transmitting beacon transmissions in a wireless local area network (WLAN) communications system (100) operating on one or more channels includes transmitting a first beacon (C1) using a directional antenna in a first direction (D1) on a first channel. A second beacon (C2) is then transmitted using a directional antenna in a second direction (D2) on the first channel. This process is then repeated such that the first beacon and second beacon after a predetermined beacon interval. The first beacon begins its transmission at a target beacon transmission time (TBTT) and the second beacon begins its transmission in a sequential period defined by an antenna switching time after the transmission of the first beacon.

Abstract: In the various embodiments of the present invention, a method of floor control in a PTX communications system comprises transmitting a floor control message via a floor control channel (905) wherein the floor control message consists of media designation fields (1003) for any possible requested media type. The media types preferred for the given requested PTX session are designated by populating the corresponding media type designators (1003) within the floor control message. The Real Time Control Protocol (RTCP) may be used for the floor control messaging channel and is independent from the requested media streams (217) which are typically Real-time Transport Protocol (RTP) media streams. Support may be provided for older mobiles that do not support each type of RTP media stream, but will still receive and interpret the RTCP floor control messaging, which in the embodiments of the present invention, is common for all media types.

Abstract: A method in a wireless communication network (100) wherein information is communicated in a frame structure wherein each frame includes multiple sub-frames, including grouping at least two wireless communication terminals in a group, assigning the group to less than all sub-frames constituting a communication frame, and assigning a radio resource assignment control channel of one or more assigned sub-frames to the group. The control channel is used to assign radio resources to one or more terminals of the group.

Abstract: A method and apparatus for calculating a location of a device is provided. A likelihood of the device being located at a particular location point or a particular location floor is determined using a likelihood calculation at each of a plurality of locations. The location point or location floor is then identified as that location having an associated highest likelihood calculation. The likelihood calculation includes calculating a distance from the device to each of a plurality of reference routers including one or more virtual coplanar reference routers, wherein each of the one or more virtual coplanar reference routers comprise a projection of a non-coplanar reference router onto the floor.

Abstract: In an OFDM communication system, a mobile station provides a radio access network (RAN) a channel quality metric second order statistic, in one embodiment a signal to noise plus interference power ratio (SINR) second order statistic and in particular an SINR standard deviation and/or variance, along with a mean channel quality metric, that is, a mean SINR. By providing both a mean channel quality metric and a channel quality metric second order statistic, the communication system permits the RAN to create a more accurate fading profile of an associated air interface, and in particular a downlink of the air interface, thereby facilitating an improved scheduling decision over the prior art and assuring that a packet has a higher probability to go through a downlink channel without too many retransmissions.

Abstract: A method for dual channel monitoring on a radio device as provided enables efficient use of communication network resources. The method includes receiving at the radio device a first speech signal over a first channel, while simultaneously receiving at the radio device a second speech signal over a second channel. The first speech signal is then processed at the radio device to generate a text transcription of the first speech signal, and the text transcription of the first speech signal is displayed on a display screen of the radio device. An audible voice signal is then produced from a speaker that is operatively connected to the radio device simultaneously with displaying the text transcription of the first speech signal.

Abstract: In an Orthogonal Frequency Division Multiplexing communication system wherein a frequency bandwidth is divided into multiple sub-bands, a method and a scheduler is provided for configuring channel quality feedback for a point-to-multipoint communication session involving multiple users equipment (UEs). The scheduler receives multiple channel quality measurements from the multiple UEs and, based on the multiple channel quality measurements, determines whether to implement a frequency selective channel quality feedback scheme or a non-frequency selective channel quality feedback scheme for the point-to-multipoint communication session. The scheduler then implements the determined channel quality feedback scheme. In another embodiment of the invention, the scheduler may determine whether to implement a frequency selective or non-frequency selective channel quality feedback scheme based on a number of UEs serviced by the scheduler.

Abstract: A method for deploying a trust bridge in an ad hoc wireless network can provide interoperability for multi-organizational authentication. The method includes processing at a delegate certification authority (DCA) node device authorizations received from of a plurality of certification authorities (CAs) of different organizations, where the authorizations authorize the DCA node device to serve as a DCA representing the CAs (step 1105). The DCA node device then processes context information received from the ad hoc wireless network (step 1110). Next, the DCA node device determines, based on the context information, that a second node device should be enabled as a new trust bridge (step 1115). The DCA node device then performs a trust bridge deployment to enable the second node device to serve as the new trust bridge (step 1120).

Abstract: Disclosed are mobile communication devices and methods of a mobile communication device that determines that no response has been received within a predetermined period of time from a network to a transmission of an encoded data block in accordance with a commanded MCS. The device then determines an alternative MCS capable of coping better with variations in the radio environment with minimal damage or alteration than the commanded MCS and preemptively transmits the encoded data block in accordance with this more robust alternative MCS. In this way the mobile communication device does not continue failed attempts to transmit data in accordance with the commanded MCS. After the device receives notice of successful transmission of the encoded data block with the alternative MCS, the device will resume the use of the commanded MCS to transmit subsequent encoded data blocks.