Abstract: A method and system for routing a push-to-talk (PTT) call in a communications network is disclosed. A PTT call request is received at a regional call processor of the communications network, where the PTT call request includes an address for a called party with a first user part and a second domain part. The regional call processor consults a table to determine whether the second domain part is associated with the communications network. The regional call processor routes the PTT call request to a central call processor of the communications network if the second domain part is associated with the communications network and routes the PTT call request to a gateway if the second domain part is not associated with the communications network.
Abstract: A system and method for providing an user the ability to roam onto a peer Integrated Digital Enhanced Network (iDEN) Network. An iGW supports the passing of Dispatch registration information back to the users home network. The iGW will also support and assist in setting up Dispatch Calls between the two iDEN Networks, and vice versa. Exemplary embodiments of the present invention also support roaming from another technology that supports Dispatch Services, where if a iDEN subscriber with a dual mode phone (i.e., iDEN & GSM), was to roam onto another carrier with a different technology but with Dispatch capabilities, the iDEN subscriber is able to register on the roaming carrier's network. The iGW is capable of receiving the registration update from the roaming network and updating the iDEN Network with the location of the iDEN Subscriber.
Type:
Grant
Filed:
October 3, 2005
Date of Patent:
October 26, 2010
Assignee:
Nextel Communications Inc.
Inventors:
Steven W. Barrow, Safwan A. Khan, Ojas T. Choksi, Arun Manroa
Abstract: An apparatus and method for mapping a newly assigned Universal Fleet Member Identifier (UFMI) to a previously assigned UFMI is disclosed. In an embodiment, an Integrated Digital Enhanced Network (iDEN) routing request message is received from a dispatch application processor (DAP) associated with a calling party at a serving home location register (HLR) of a called party. The routing request message includes a previously assigned UFMI of the called party. A newly assigned UFMI of the called party is obtained by the HLR by consulting a subscriber table stored in the HLR. An iDEN routing response message is transmitted to the DAP by the HLR, where the routing response message includes the newly assigned UFMI associated with the called party.
Abstract: A method and system for providing repeatable GPS performance testing of a communication device are provided. Navigation data is complied over a drive route. The navigation data is used as an input to a GPS simulator to duplicate in a laboratory setting the GPS signals present at the GPS receiver during a travel along the drive route. Performance data of a baseline unit can be obtained for benchmarking the performance of a communication device being tested. A device under test can also be exposed to simulated GPS signals and to both simulated GPS signals and other radio frequency signals, such as telephone network signals present along the drive route.
Type:
Grant
Filed:
August 24, 2007
Date of Patent:
September 14, 2010
Assignee:
Nextel Communications Inc.
Inventors:
Kamlesh Lele, Arsalan Sajid Mehmood, Robert Scott Oberlender
Abstract: Methods and apparatus for notifying mobile stations in an inactive state of the presence of uplink or downlink channel configuration, broadcast system updates, traffic channel allocations and paging messages are provided. The notification can be provided in an information element in the same channel as the frame, or in a different channel. The information element identifies a subsequent frame which includes broadcast or configuration changes. The notifications for traffic channel allocations can include a first field, which identifies whether there are any traffic channel allocations for any sleep mode mobile station, and a second field for identifying the particular sleep mode mobile stations which are to receive traffic channel allocations. Notifications for paging messages can include a field, which identifies whether there are any paging messages for any idle mode mobile stations, and use second field to identify the particular idle mode mobile stations, which are to receive the paging messages.
Abstract: Systems and methods for supporting group communications are provided. A group list management server (GLMS) stores communications group definitions in documents, such as extensible mark-up language (XML) documents. The communications group can include communication addresses for different types of communication applications, including electronic mail, voice telephone, data, instant messaging, voice dispatch, short messaging service (SMS), and multimedia service (MMS). Various methods for managing communications groups and features provided for communications groups are provided.
Abstract: A system and method for expanding traffic channels in a wireless communications system, such as CDMA2000, includes a method for generating a forward link signal including encoding each of a first set of channels with a mutually corresponding channel code, such as a Walsh code, selected from a predetermined set of channel codes, and encoding each of a second set of channels with the same mutually corresponding channel codes. A scramble code is applied to the encoded second set of traffic channels, which is combined with the encoded first set of traffic channels to form an extended forward link signal. Each channel code corresponds to two forward link channels, which are selectively decoded using the scramble code.
Abstract: Systems and methods of controlling control and/or monitoring devices are provided. A controller can include a software defined radio in order to communicate with control and/or monitoring devices that employ different communication protocols. The controller can be in the form of a memory stick, memory card or dongle.
Type:
Grant
Filed:
January 7, 2008
Date of Patent:
August 3, 2010
Assignee:
Nextel Communications Inc.
Inventors:
John McCloskey, D. Mitchell Carr, Hieu Nguyen
Abstract: Systems and methods for supporting dispatch communications with guaranteed talk permit and forced audio are provided. The systems and methods can include servers and communication units that operate according to the Push-to-Talk over Cellular (PoC) standard. A user of a communication unit can select a guaranteed talk permit with forced audio answer mode, and provide an indication of the answer mode to a PoC server. When the PoC server does not support a guaranteed talk permit with forced audio answer mode, this indication can be for a manual answer mode. Alternatively, the indication can be for a guaranteed talk permit with forced audio answer mode. In this case, a terminating communication unit is contacted during the dispatch communication setup even when the communication setup request is set to manual answer override.
Abstract: Systems and methods for providing in-building wireless network coverage are disclosed. An exemplary method for providing in-building wireless network coverage includes coupling a wireless repeater to an exterior power outlet of the building, and coupling a wireless in-building base station to an interior power outlet of the building. The exterior and interior power outlets are coupled to each other via the building's electrical power wiring. The wireless repeater forwards information received from a wireless macro network base station to the wireless in-building base station, and forwards information received from the wireless in-building base station to the wireless macro network base station.
Abstract: A system and method of conducting a dispatch multi-party communication session is disclosed. In accordance with an embodiment of a method of the present invention, the method includes establishing a dispatch multi-party communication session in a dispatch network and identifying the dispatch multi-party communication session to a subscriber of the dispatch network. A join request is received at the dispatch network from the subscriber in response to identifying the dispatch multi-party communication session and the subscriber is joined to the session in response to the received join request. In accordance with an embodiment of a system of the present invention, the system includes a dispatch network wherein the network establishes a dispatch multi-party communication session and identifies the dispatch multi-party communication session to a subscriber of the dispatch network.
Type:
Grant
Filed:
September 15, 2005
Date of Patent:
July 13, 2010
Assignee:
Nextel Communications Inc.
Inventors:
Dan Tillet, David Martin, Karalyn Szuszczewicz, Trinh Vu
Abstract: A system and method for allocating vocoder resources for interconnect calls includes consideration of what percentage of interconnect calls have been assigned to a particular vocoder type. In an embodiment a vocoder type is assigned to a given interconnect call based on a comparison of the available capacity of the telecommunications network to one or more threshold values, and a determination on whether or not the percentage of interconnect calls assigned to a given vocoder type has exceeded a threshold percentage. In certain embodiments, the vocoder is adapted to operate in one of at least two possible types, where the first type is characterized by a higher voice quality, but a lower network capacity, than the second type.
Type:
Grant
Filed:
January 31, 2006
Date of Patent:
July 13, 2010
Assignee:
Nextel Communications Inc.
Inventors:
Maqbool Aliani, Ismael Garcia, Ante Kovacevic
Abstract: Systems and methods for a dispatch communication router are provided. The dispatch communication router allows calls between two or more dispatch communication networks which operate using different dispatch communication protocols. The dispatch communication router includes a protocol interworking function, a media control stack and a transcoding function. The dispatch communication router also includes a dispatch technology protocol stack for each different dispatch communication protocol supported by the router. The dispatch technology protocol stack converts dispatch communication signaling of a particular dispatch communication technology into a common protocol. The dispatch technology protocol stack can also convert dispatch communication media into a common dispatch communication media protocol and media format, or a separate transcoder can be provided to perform such conversion.
Abstract: Method and computer-readable medium for managing billing for calls within a user's telecommunications campus. According to the method and computer-readable medium for managing billing for calls within a user's campus, users can make unlimited calls within the campus by determining whether a call from a user begins in a predetermined area of use; determining whether the user is on a predetermined list of users, if the call began in the predetermined area of use; assigning a first billing rate to the call, if the predetermined list of users includes the user; and assigning a second billing rate to the call, if the predetermined list of users does not include the user.
Abstract: Systems and methods for providing presence information to dispatch stations are provided. Presence information regarding a dispatch station in a first network can be provided to a dispatch station located in a second network using a private call alert with a “Do Not Alert” flag set. A dispatch processor in the first network can include a presence notification list, which identifies the dispatch station in the second network that should be notified of changes in the presence information for the dispatch station in the first network.
Abstract: A system and method for determining the location of a base transceiver station (BTS) are provided. A personal BTS can determine its location using information transmitted by neighboring BTSs or from mobile station transmissions to neighboring BTSs. If the personal BTS cannot determine its location using information from neighboring BTSs or from mobile station transmissions, the personal BTS can contact a cellular network operator to request that a technician come out to verify the location.
Abstract: A frequency reuse scheme that provides high spectral efficiency and reduced interference in areas where cell sites overlap is provided. Three frequencies are allocated per cell site, with each sector employing two frequencies, one frequency being transmitted at a higher power and the second frequency being transmitted at a lower power. The higher power frequency in one sector differs from the higher power frequency employed in the other two sectors, and the lower power frequency used in one sector differs from the lower power frequency used in the other two sectors.
Type:
Grant
Filed:
August 11, 2005
Date of Patent:
July 6, 2010
Assignee:
Nextel Communications Inc.
Inventors:
Douglas A. Hyslop, Matthew Starzec, Udit Thakore
Abstract: Systems and methods for button-independent dispatch communications are provided. A dispatch station monitors a microphone input to determine whether it provides voice information. When the input provides voice information, the dispatch station then determines whether the floor of the dispatch communication is open. When the floor is open, the dispatch station seizes the floor and transmits the voice information. When the floor is not open, the dispatch station can store the voice information and transmit it once the dispatch station is able to seize the floor.
Abstract: Systems and methods for allocating traffic and associated control channels are provided. A downlink traffic control message can include an identification of a downlink traffic channel and an identification of an associated uplink control channel. An uplink traffic control message can include an identification of an uplink traffic channel and an identification of an associated downlink control channel in a frame subsequent to the frame of the uplink traffic channel. The associated control channels can be a feedback channel, which can provide power control information, retransmission request information, channel quality indication information and/or the like.
Abstract: Systems and methods for monitoring dispatch communications are provided. A console receives signaling and/or media streams for two or more dispatch talk groups. The console alternatively outputs the two or more media streams. In response to a suspension command, the console will continue to output the current media stream, until a suspension cancel command has been received. The console will skip to a next media stream, out of a group of media streams, in response to receipt of a next media stream command.