Abstract: A method and a system for operating a subscriber unit to seamlessly switch between a trunked mode operation (TMO) and a direct mode operation (DMO) in a communication system. The communication system includes one or more subscriber units communicating in trunked mode operation on a first communication channel via a base station and the subscriber units communicating in direct mode operation on a second communication channel via a direct mode gateway station. When the subscriber units communicate in the TMO and when the signal quality on the first communication channel is below the predetermined threshold, the subscriber units automatically switch to the direct mode operation. When the subscriber units communicate in DMO and when the signal quality on the second communication channel is below the predetermined threshold, the subscriber units automatically switch to the trunked mode operation.

Abstract: A method and apparatus for a method and apparatus for correlation canceller for interference mitigation with adaptive DC offset cancellation for a dual mode communication device includes detecting an active signal transmitting in one mode; configuring integrators associated with the adaptive correlation canceller into gain amplifiers; detecting DC offset utilizing the gain amplifiers and comparators; and configuring the integrators from the gain amplifiers back to integrators with the DC offset applied thereto. The active signal transmitting in one mode can be Long Term Evolution (LTE) which is adjacent to a signal in another mode.

Abstract: Disclosed herein are methods and systems for node operation according to network-wide resource-allocation schedules. One embodiment takes the form of a method carried out by a given node within an ad-hoc wireless network, which includes a controller node for a current time period. The method includes obtaining one or more air-interface resource requests for the current time period, where each obtained resource request indicates a requesting node and a requested resource. The method further includes using a network-standard algorithm for deriving a network-wide resource-allocation schedule for the current time period based at least in part on the obtained resource requests. The method further includes verifying the derived resource-allocation schedule based at least in part on a verification value derived by the controller node from the network-wide resource-allocation schedule using a network-standard verification function.

Abstract: A method and apparatus for a method and apparatus for correlation canceller for interference mitigation with adaptive DC offset cancellation for a dual mode communication device includes detecting an active signal transmitting in one mode; configuring integrators associated with the adaptive correlation canceller into gain amplifiers; detecting DC offset utilizing the gain amplifiers and comparators; and configuring the integrators from the gain amplifiers back to integrators with the DC offset applied thereto. The active signal transmitting in one mode can be Long Term Evolution (LTE) which is adjacent to a signal in another mode.

Abstract: A media server and method of operation of a media server in a wireless communication system are provided. The media server receives media streams from mobile communication devices in the wireless communication system, and routes the media streams sequentially to a packet header compression encoder. A processor of the media server is configured to receive a first media stream from a first mobile communication device, receive a request from a second mobile communication device to transmit a second media stream to the media server, and transmit data derived from an RTP header of the first media stream to the second mobile communication device. The second mobile communication device is enabled to commence transmission of the second transmitted media stream using the data derived from the RTP header. The wireless communication system may be a PTT wireless communication system or a group video wireless communication system.

Abstract: A method and system for data transmission is provided. Compressed payload packets are transmitted on one or more payload channels. On a header restoration channel, header restoration packets are transmitted for restoring headers of at least some of the compressed payload packets.

Abstract: Disclosed herein are methods and systems for node operation according to network-wide resource-allocation schedules. One embodiment takes the form of a method carried out by a given node within an ad-hoc wireless network, which includes a controller node for a current time period. The method includes obtaining one or more air-interface resource requests for the current time period, where each obtained resource request indicates a requesting node and a requested resource. The method further includes using a network-standard algorithm for deriving a network-wide resource-allocation schedule for the current time period based at least in part on the obtained resource requests. The method further includes verifying the derived resource-allocation schedule based at least in part on a verification value derived by the controller node from the network-wide resource-allocation schedule using a network-standard verification function.

Abstract: A method and services network element are provided that provide for queued admissions control in a wireless communication system by receiving a bearer establishment request associated with a user equipment, determining that a cell where the user equipment is located is congested, in response to determining that the cell is congested, creating a bearer establishment request record (BERR) associated with the user equipment and the bearer establishment request, wherein the BERR comprises priority information associated with the BERR, and adding the BERR to a queue, wherein the queue is associated with a cell serving the user equipment, wherein the BERR is positioned in the queue based on the priority information, and wherein bearer establishment requests associated with BERRs in the queue are submitted based on a position of the BERRs in the queue.

Abstract: A method and a system for operating a subscriber unit to seamlessly switch between a trunked mode operation (TMO) and a direct mode operation (DMO) in a communication system. The communication system includes one or more subscriber units communicating in trunked mode operation on a first communication channel via a base station and the subscriber units communicating in direct mode operation on a second communication channel via a direct mode gateway station. When the subscriber units communicate in the TMO and when the signal quality on the first communication channel is below the predetermined threshold, the subscriber units automatically switch to the direct mode operation. When the subscriber units communicate in DMO and when the signal quality on the second communication channel is below the predetermined threshold, the subscriber units automatically switch to the trunked mode operation.

Abstract: A source rate associated with a video bit stream (112) and a channel (140) rate associated with an LTE environment can be identified. The video bit stream (112) can be a Scalable Video Codec (SVC) of an H.264/MPEG4 Advanced Video Coding. The channel (140) rate can be associated with one or more segment bandwidth (142) rates. An enhancement path from an enhancement profile (332) associated with the SVC can be determined. The enhancement profile (332) can include one or more cumulative source rates and an associated enhancement options. The enhancement options can be a frame quantity, frame size, and a frame quality (122, 124, 126). The enhancement path can be a subset of nodes of the enhancement graph (400). The channel (140) rate can be matched to a cumulative source rate to a node within the enhancement path. One or more Network Abstraction Layer (NAL) units (144) with the appropriate enhancement values can be conveyed.

Abstract: A method and apparatus are provided for capturing an image so that color degradations can be minimized. During operation, a video-recording system will fetch and record the scene without the illumination of the light bars. More particularly, as a video recorder/transmitter is set to record, logic circuitry triggers the light bars to turn off for a short period of time (e.g., a few seconds), and then turned back on. During that time period, the field-of-vision (unencumbered by the stroboscopic illumination and color) is sampled by the camera as a reference. Color correction/compensation is performed using the unencumbered field-of-vision as a reference.

Abstract: Apparatuses and methods are disclosed for increasing calling capacity in a carrier by dividing timeslots on the carrier into sub-slots and for conveying usage and access rights information for each sub-slot on a carrier. A base station configures a control signal that is associated with each of a plurality of timeslots on a carrier. Each of the plurality of timeslots is divided into sub-slots and specific fields in the control signal are associated with each sub-slot. The base station provides, to mobile stations, at least one of a usage marker or access rights information through the control signal. The mobile stations use the usage marker or access rights information to determine whether transmission of voice traffic and control signaling is permitted on each sub-slot.

Abstract: A method of operation in a communication system is presented in which a first terminal sends to a second terminal a communication including ranging information by which the second terminal is able to calculate a range between the first terminal and the second terminal. The communication is sent in a plurality of frames. In at least one of the frames ranging information is included in a ranging region of the frame. The size and position of the ranging region is known to the first and second terminals without a ranging information indicator being sent in the frame to indicate the size and position of the ranging region.

Abstract: A source rate associated with a video bit stream (112) and a channel (140) rate associated with an LTE environment can be identified. The video bit stream (112) can be a Scalable Video Codec (SVC) of an H.264/MPEG4 Advanced Video Coding. The channel (140) rate can be associated with one or more segment bandwidth (142) rates. An enhancement path from an enhancement profile (332) associated with the SVC can be determined. The enhancement profile (332) can include one or more cumulative source rates and an associated enhancement options. The enhancement options can be a frame quantity, frame size, and a frame quality (122, 124, 126). The enhancement path can be a subset of nodes of the enhancement graph (400). The channel (140) rate can be matched to a cumulative source rate to a node within the enhancement path. One or more Network Abstraction Layer (NAL) units (144) with the appropriate enhancement values can be conveyed.

Abstract: A method and apparatus is disclosed for increasing calling capacity in a carrier using enhanced Terrestrial Trunk Radio (TETRA) protocols. The method includes transmitting, by a base station to at least one mobile station, a permission signal for an assigned timeslot on a carrier, wherein each timeslot is divided into at least two sub-slots. The method also includes configuring a control signal that is associated with each of the plurality of timeslots. Specific fields in the control signal are associated with each sub-slot on each of the plurality of timeslots. The method further includes providing usage markers through the control signal. Usage markers values are divided into ranges, each range used to identify a timeslot or a sub-slot assignment on the carrier. The base station sends a time advance value to the mobile station to indicate when transmission from the mobile station is to begin.

Abstract: Apparatuses and methods are disclosed for increasing calling capacity in a carrier by dividing timeslots on the carrier into sub-slots and for conveying usage and access rights information for each sub-slot on a carrier. A base station configures a control signal that is associated with each of a plurality of timeslots on a carrier. Each of the plurality of timeslots is divided into sub-slots and specific fields in the control signal are associated with each sub-slot. The base station provides, to mobile stations, at least one of a usage marker or access rights information through the control signal. The mobile stations use the usage marker or access rights information to determine whether transmission of voice traffic and control signaling is permitted on each sub-slot.

Abstract: A method and apparatus is disclosed for increasing calling capacity in a carrier using enhanced Terrestrial Trunk Radio (TETRA) protocols. The method includes transmitting, by a base station to at least one mobile station, a permission signal for an assigned timeslot on a carrier, wherein each timeslot is divided into at least two sub-slots. The method also includes configuring a control signal that is associated with each of the plurality of timeslots. Specific fields in the control signal are associated with each sub-slot on each of the plurality of timeslots. The method further includes providing usage markers through the control signal. Usage markers values are divided into ranges, each range used to identify a timeslot or a sub-slot assignment on the carrier. The base station sends a time advance value to the mobile station to indicate when transmission from the mobile station is to begin.

Abstract: A method (700) of operation in a cellular communication system including at least one base station and, associated with the at least one base station, a plurality of user terminals in sectors to allow separate communications between the base station and the user terminals in different sectors, the method including providing (701, 703) a set of communication resource slots for distribution to the sectors for use in sending uplink traffic data, dividing (705, 707) at least part of the set into groups of slots having equal numbers of resource slots and allocating (709, 711) the groups of slots to the different sectors. A system, a base station and a mobile station operable using the method are also described.

Abstract: A method (700) of operation in a cellular communication system including at least one base station and, associated with the at least one base station, a plurality of user terminals in sectors to allow separate communications between the base station and the user terminals in different sectors, the method including providing (701, 703) a set of communication resource slots for distribution to the sectors for use in sending uplink traffic data, dividing (705, 707) at least part of the set into groups of slots having equal numbers of resource slots and allocating (709, 711) the groups of slots to the different sectors. A system, a base station and a mobile station operable using the method are also described.

Abstract: A method of operation in a communication system is presented in which a first terminal sends to a second terminal a communication including ranging information by which the second terminal is able to calculate a range between the first terminal and the second terminal. The communication is sent in a plurality of frames. In at least one of the frames ranging information is included in a ranging region of the frame. The size and position of the ranging region is known to the first and second terminals without a ranging information indicator being sent in the frame to indicate the size and position of the ranging region.