摘要:
A method and apparatus for enabling interoperability between a broadband network and a narrowband network includes an interworking server maintaining at least one virtual narrowband site, each comprising a plurality of virtual narrowband channels known by a controlling server within the narrowband network, wherein each virtual narrowband channel, when assigned by the controlling server, represents a corresponding set of broadband resources. A first broadband device coupled to the broadband network is associated with a first virtual narrowband site. The interworking server further exchanges signaling with the controlling server to enable communications by the first broadband device using a set of broadband resources corresponding to a first virtual narrowband channel of the first virtual narrowband site, wherein the first virtual narrowband channel is assigned by the controlling server for use by a virtual narrowband device which represents the first broadband device.
摘要:
A hosted inter-radio frequency subsystem interface (HIF) maintains a list of affiliated radio frequency subsystems (RFSSs), the list identifies at least one serving RFSS. An affiliation request is transmitted from the HIF to the home RFSS, which is a home RFSS of the group. The HIF receives from the serving RFSS a request to initiate an inter-RFSS group call to the group using HIF addressing. The HIF transmits a request to the home RFSS to initiate the inter-RFSS group call using serving RFSS addressing. A data packet from the home RFSS or the serving RFSS is received at the HIF. Upon receipt, the HIF transmits a copy of the data packet to the serving RFSS if the data packet was received from the home RFSS; otherwise, the HIF transmits a copy of the data packet to the home RFSS if the data packet was received from the serving RFSS.
摘要:
A priority scheme for a system that supports dispatch and telephone services whereby more important calls, of the type spanning across the same or multiple cells, are dynamically assigned higher positions in the queue for the next voice channel to become available. Less important calls are readily identified and can have their voice channel taken away, i.e., dropped, to provide a channel for an emergency call. The priority scheme also makes it possible to for the priority of call in progress to dynamically change, e.g., increasing priority over time so that its voice channel can't be taken away by a higher priority call, or decreasing priority of call as a function of time in progress.
摘要:
The present invention encompasses a method of providing communication service to members of a talkgroup in a radio communication system (100). A typical system (100) includes a plurality of communication units (116-122), a plurality of communication sites (106-112), and a central controller (114) that communication resources among the communication units (116-122). Upon receipt of a request for a talkgroup call from a communication unit, the central controller (114) grants the talkgroup call request for the first talkgroup. When the central controller (114) receives, during the first call, a talkgroup call request for the same talkgroup, the controller (114) agglomerates the two concurrent talkgroup calls, thereby providing communication service to all members of the talkgroup using a single communication resource.
摘要:
A multi-site communication system (100) includes a plurality of communication units ( 112-117), a central controller (101) for coupling a plurality of communication sites (106-108), and a site controller (103) corresponding to one of the communication sites (106). Communication access between two or more communication units (112-117) can be enhanced by a method (200, 300) including the steps of receiving (201) a request for a first communication, and directing (211) the appropriate site controller to re-submit the request. By so doing, the site controller (103) can request (314) the central controller (101) to establish a realizable communication between two communication units in the system (113, 114).
摘要:
A mobile device registers with an infrastructure device coupled to a first communication network and then sends a request to activate PTT service in the first communication network. A communication server is adapted to receive the request to activate the PTT service, and to, thereby, activate the PTT service for the mobile device in the first communication network. Responsive to receiving the request to activate the PTT service, the communication server makes a determination to register the mobile device with a second communication network, generates a service registration message, on behalf of the mobile device, to register the mobile device with the second communication network, and sends the service registration message to the second communication network.
摘要:
A method and apparatus for extending a virtual channel of a communication area to a user equipment is disclosed. A message including a virtual channel identity and an area identity from the user equipment is received at a call controller. The call controller determines that the virtual channel identity is associated with a communication area and the area identity is associated with an area outside the communication area. The call controller then determines whether a virtual channel extension feature is enabled on the user equipment, and if so, receives data from the user equipment and then distributes the data on the virtual channel.
摘要:
An infrastructure device in a 3GPP compliant system performs a method transporting a plurality of media streams over a shared MBMS bearer. The 3GPP compliant system includes a RAN partitioned into a plurality MBMS services areas, wherein each MBMS service area has at least one already existing shared MBMS bearers for transporting the media streams. The infrastructure device: receives a first request to transmit a first media stream to a first communication group; identifies a shared MBMS bearer in a first 3GPP MBMS service area that is already transporting a second media stream to a second communication group; and determines whether the shared MBMS bearer has sufficient capacity to transport both the first media stream and the second media stream simultaneously. When the shared MBMS bearer has sufficient capacity, the infrastructure device simultaneously sends both the first media stream and the second media stream on the shared MBMS bearer.
摘要:
Methods for reducing set-up time for communications among multiple user equipment (UE) in a Long Term Evolution (LTE) communication system are described. In accordance with one method, an LTE subsystem that includes a eNodeB and a Mobility Management Entity (MME): receives a request for an LTE connection from a first UE associated with a virtual channel, and responsive to contents in the request for the LTE connection, generates on behalf of the first UE, a request to transmit media on the virtual channel, which the LTE system sends to an application server to trigger an establishment of a call to deliver a media transmission from the first UE to at least one other UE associated with the virtual channel.
摘要:
An access point (102) conveys (202) to communication units (104) of a plurality of multicast groups, a first indication that the access point supports a method for sending a multicast message. The access point receives (204) a multicast message directed to a receiving one of the plurality of multicast groups, and determines (206) that the communication units belonging to the receiving one of the plurality of multicast groups also support the method. The access point signals (208) a second indication to selectively awaken the communication units belonging to the receiving one of the plurality of multicast groups, and transmits (210) the multicast message to the receiving one of the plurality of multicast groups in a manner that allows (212) at least one communication unit not belonging to the receiving one of the plurality of multicast groups to remain asleep during the transmitting.