Matches 1 - 35 out of 35
Match Document Document Title
7366892 Secure telematics  
A telematics system that includes a security controller is provided. The security controller is responsible for ensuring secure access to and controlled use of resources in the vehicle. The...
7359705 Random access burst transmission scheme  
The present invention relates to an apparatus for transmitting and receiving signals in a wireless telecommunication system and to a method for transmitting random access bursts in such an...
7346370 Enabling interoperability between distributed devices using different communication link technologies  
The present invention is directed to facilitating communications and interoperability between/among applications and services. Such applications and services may be running on or associated with...
6996412 Efficient resource management for packet data services  
The present invention is a system for distributing the reconnection attempts of multiple system users in a CDMA telephone system over a broad time window. The present invention allows either the...
6925309 Method and apparatus for quickly establishing a CDMA dispatch call  
To address the need for an apparatus and method for quickly establishing a CDMA dispatch call, the present invention provides for paging mobile stations (e.g., 120-123 ) to inform them of the call...
6810263 Packet data reconnection timing control in mobile communication systems  
The present invention is a system for distributing the reconnection attempts of multiple system users in a CDMA telephone system over a broad time window. The invention assigns a randomly initial...
6804529 Trunked radio repeater communication system including home channel aliasing and call grouping  
A system for channel assignment in a trunked transmission communication system including a plurality of subscribers. A plurality of subscribers is provided home channel assignment to reduce...
6577874 Methods and systems for providing temporary identification numbers for mobile terminals  
A method of receiving digital messages from a mobile terminal at a radio base station of a communications system including a plurality of radio base stations is discussed. This method includes...
6564049 Methods and systems for providing group calls with reduced setup times  
Group calls can be provided between an originating terminal and a called terminal on a radiotelephone communications system including a switching center and a plurality of radio base stations...
6532224 Method, systems, and terminals for assigning control channel time slots for group and individual pages  
A method of assigning paging channels to terminals providing group communications with a communications systems includes defining a control channel including a plurality of time slots wherein the...
6529486 Trunked radio repeater communication system  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for...
6516192 Communications channel selection  
A communications system is provided for sending and receiving information relative to a mobile unit in which a number of network channels are available through which the information can be...
6501947 Efficient resource management for packet data services  
The present invention is a system for distributing the reconnection attempts of multiple system users in a CDMA telephone system over a broad time window. The present invention allows either the...
6480723 Communications interface adapter  
A communications interface adapter facilitates both wired and wireless communications between crew members of a vehicle having a wired intercom and has an intercom communications circuit having an...
6467059 Wireless transmission system  
When a parent device of a wireless transmission system receives a transmission request, then in S 1 , the parent device generates a data packet to be transmitted to the child device. In S 2 , the...
6449491 Apparatus and methods for conducting group calls in wireless communications systems  
A group call is conducted in a wireless communications system including a plurality of distributed transceiver units, e.g., radio heads of a private wireless system, each of which are operative to...
6374115 Method and apparatus for trunked radio repeater communications with backwards compatibility  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for...
6292452 Optical disk apparatus for using multiple types of disks  
An optical disk drive has an inserting/ejecting mechanism for performing an insertion and ejection of either a CD mounted on a CD carrier or an MO cartridge and a recording and reproducing...
6122483 Method and apparatus for multicast messaging in a public satellite network  
A satellite communication system provides multicast messaging services to subscriber units. Upon receipt of a multicast communication page from a satellite communication system network, a...
6097706 Demand-based connection management integrated services access terminal (ISAT) for satellite communication system  
A demand-based connection management satellite communication network includes a plurality of geographically distributed earth stations, each earth station having a frame relay protocol-based switch...
6069858 Optical disk apparatus  
Functions regarding a mechanical structure are made common so as to enable both of a CD and an MO cartridge to be used by one apparatus. When the CD as an exposed medium is loaded, the apparatus...
6064640 Optical disk apparatus and medium carrier and medium turntable for optical disk apparatus  
A CD is mounted in a CD carrier and is inserted and ejected to/from a recording and reproducing mechanism of an optical disk drive for commonly performing both of a reproduction of the CD and...
5956639 Method and apparatus for registering mobile user groups with a radio telecommunication system  
A method and apparatus for a communication system (100) to register groups of co-located users in a mobile vehicle (110) involves collecting (200) registration information for multiple users by a...
5841765 Demand-based connection management integrated services access terminal (ISAT) for satellite communication system  
A demand-based connection management satellite communication network includes a plurality of geographically distributed earth stations, each earth station having a frame relay protocol-based switch...
5815799 Priority system for a wide area transmission trunked communication system  
A method and apparatus for providing priority access for users in a transmission trunked communication system, including a plurality of distributive radio network terminal (RNT) switches and a...
5797100 Method for setting up a call connection for a group call to a group of mobile radio subscribers in a mobile radio network  
In a method for setting up a call connection for a group call to a group of mobile radio subscribers in a mobile radio network, a subscriber calling a group of mobile radio subscribers dials a...
5787338 Method and apparatus for controlling operation of a portable or mobile battery-operated radios  
A base station-based communications system provides radio communication with battery-operated, portable radios, each radio including predetermined radio operating parameters corresponding to...
5613196 Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system  
A land mobile transmission trunked communication system is provided with a unique switching protocol arrangement among repeaters that are networked to one or more external communication networks....
5574788 Trunked radio repeater system  
A digitally trunked radio repeater system provides substantial improvements in timeliness of channel acquisition and channel drop, and in reliability of critical control signalling. The system uses...
5548802 Method and apparatus for a remote network switch for a land mobile transmission trunked communication system  
A method and apparatus for distributively interconnecting a plurality of land mobile trunked transmission communication systems into a wide area network includes a plurality of distributive radio...
5491835 Method for maintaining audience continuity of a communication group call  
In a multi-site communication system (100), audience continuity of an established communication group call can be maintained by a central controller (116) in the following manner. Upon initial...
5465386 Signaling protocol for a distributive wide area transmission trunked communication system  
A land mobile transmission trunked communication system is provided with an enhanced control signal protocol. The land mobile transmission trunked communication system includes a plurality of...
5463617 Method for providing caller interrupt in a time division multiplexed wireless communication system  
A first communication unit (101) transmits, to a central controller (105), a request for a group call. The central controller allocates a first inbound (11), a second inbound (12), and an outbound...
5457809 Group communications method between mobile stations  
When a particular mobile station transmits a call out signal including a group number of the mobile station and the call out signal is received by a mobile exchange by way of a mobile base station,...
5423061 Method for providing dispatch services to communication groups and multiple communication groups  
In a communication system, an operator station provides dispatch services to communication groups and multi-communication groups. When a request is received by the operator station to provide a...
Matches 1 - 35 out of 35