Matches 51 - 100 out of 322 < 1 2 3 4 5 6 7 >
Match Document Document Title
7123593 Method for broadcasting radio signals from a radiocommunication base station, base stations and mobile terminals therefor  
A base station forms a time-division multiplexing physical control channel comprising a set of presynchronization timeslots each carrying the same synchronization signal, and a set of...
7120814 System and method for aligning signals in multiple clock systems  
A system and method for aligning an input signal ( 24 ) synchronized to a first clock signal ( 22 ) with a second clock signal ( 26 ). The invention includes a mechanism ( 106 ) for generating a...
7120132 Apparatus and method for synchronization of uplink synchronous transmission scheme in a CDMA communication system  
Disclosed is a method for synchronizing a scrambling code in a CDMA communication system including a UTRAN (UMTS Terrestrial Radio Access Network) and a plurality of user equipments (UEs), using...
7116991 Method of determining the position of a mobile station in a mobile telecommunication network  
The present invention concerns a method of determining the position of a mobile station in a mobile telecommunication network, the said network including a plurality of base stations designed to...
7110782 Cell search synchronization  
Cell search synchronization in spread spectrum communications systems using primary and second synchronization codes with symbol partitioning for shorter coherent combinations (despreading) which...
7095856 Method and apparatus to maintain encryption synchronization in a multi-modulation TDM system  
Encryption synchronization (e-sync) is maintained between a transmitter ( 104 ) and one or more receivers ( 102 ) in a multi-modulation TDM system ( 100 ) where information is communicated in slots...
7095723 Base station for code group synchronization  
A base station is capable of communicating in a time division duplex using code division multiple access format. The base station transmits a primary synchronization signal and secondary...
7093275 Synchronizing services across open cable and packet cable  
Disclosed is a system and that synchronizes utilization of a data transfer with an audio/video stream. Time information contained within an audio/video stream is monitored for a specified time at...
7054641 Communications system load control methods and apparatus  
A communication system ( 100 ) includes an aircraft ( 120 ) that acts as a repeater between ground equipment ( 101 ) and communication units ( 128 ) on the ground. The ground equipment ( 101 )...
7047011 Synchronization in diversity handover  
To avoid signal quality degradation in resynchronization procedures, a base station and a mobile station do not adjust their timing simultaneously. Generally, a timer or a clock in each of the...
7042854 Method and apparatus for acquiring a synchronization signal  
A method and system for acquiring a time division multiplexed synchronization signal in a satellite communication system is provided. The signal is provided as a series of frames with beacon...
7039729 Data transfer apparatus  
In a data transfer apparatus 10 , first, second, third data transmitters 141, 142, 143 are located in a data transmission device 11 . Data which must not be influenced by delay of transmission...
7027827 Method and apparatus for channel sharing between multiple communication systems  
Remote units within a first communication system ( 121 ) utilizes frequencies (channels) from a second communication system ( 120 ) when placing a call. When a first remote unit ( 106 ) wants to...
7023817 Method and apparatus for source device synchronization in a communication system  
A communications method including the steps of: activating a plurality of signal sources, and transmitting a synchronization event to the plurality of signal sources to cause the plurality of...
7023816 Method and system for time synchronization  
A method for synchronizing a timing device of a client station via a communications network is disclosed. A plurality of packets is sent from a time server to the client station via the...
7020105 Dynamic resource allocation in packet data transfer  
A method for control of packet data transmissions in a TDMA wireless network to provide for additional choices in the allocation of communication channels. Measurement and recovery periods are...
7016443 Synchronization method and system for clock signal sources, in particular in packet transmission communication systems  
The invention relates to a method for synchronization of clock sources in a communications system, in particular a radio communications system, having a large number of devices (PSTN, MSC, RNM,...
7006553 Analog signal separator for UWB versus narrowband signals  
A system, method, and computer program product for removing “narrowband” interference from a broader spectrum containing a UWB signal, in a receiver of the UWB signal. The RFI is extracted from...
6992992 Downlink beam hopping waveform  
A frame signal ( 100 ) for communicating payloads ( 104, 110 ) of data includes a first payload field ( 104 ) and a first header field ( 102 ) with a first frame type indicator ( 120 ). The frame...
6987981 Robust RLC reset procedure in a wireless communication system  
In the AM RLC reset procedure of a wireless communication system, a delayed Reset ACK PDU will cause un-synchronization between the Sender and the Receiver. This invention of method and system...
6987752 Method and apparatus for frequency offset estimation and interleaver synchronization using periodic signature sequences  
A method and apparatus are disclosed for frequency offset estimation and interleaver synchronization, using periodic signature sequences, such as Barker codes. The periodic signature sequence is...
6983160 Base site and method for GPS-based regional time synchronization  
To address the need for an apparatus and method of economically synchronizing base sites ( 110–113 ) in wireless communication systems, the present invention provides a GPS-based solution for...
6980587 Method for acquisition of slot timing in a direct sequence spread spectrum communication receiver  
A set of values corresponding to measured parameters of the output peaks resulting from the correlation of the received data with a synchronization code stored in the receiver are saved to a peak...
6980561 System, device, and method for initial ranging in a communication network  
A system, device, and method for initial ranging that dynamically adjusts the backoff window size to maximize the probability of success during contention access. The invention takes a first system...
6975618 Receiver and correlator used to determine position of wireless device  
A system for identifying the position of a wireless device and transmitting that position back to the wireless device, the system comprising a plurality of receiver/correlators, each...
6965634 Non-stationary dither code generation and detection  
A detector receives a signal and detects from it a long code composed from shorter codes, where the shorter codes are dithered according to a non-repeating dither pattern. The received signal is...
6961353 Radio transmission method and radio transmission apparatus  
To provide a radio transmission method and a radio transmission apparatus capable of performing a highly-efficient radio transmission depending on the number of communicating stations, a...
6956814 Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system  
A satellite system employing time diversity and a single frequency network of terrestrial re-radiation stations is provided wherein each terrestrial re-radiation station inserts a delay into a...
6937646 Leakage nulling receiver correlator structure and method for ultra wide bandwidth communication system  
A receiver correlator structure for an ultra wide bandwidth communication system includes an antenna, a mixer, a bandpass filter, and a convertor. The receiver receives, via the antenna, an ultra...
6931078 Ultra wide bandwidth spread-spectrum communications systems  
An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The...
6920323 Satellite communications system and user terminal providing path diversity  
In a satellite communications system, where a user terminal 10 , on the surface of the earth 12 , can be in diversity communication to an earth station 18 via two orbiting satellites 14, 16 ...
6912227 Device and method for acquiring phase of spreading code in CDMA communication system  
A code acquisition device securing reliable code acquisition and reducing a time required for a code acquisition procedure. In the device, a sampler samples an input signal, and a searcher...
6901267 Recognition of wide-band data sequences  
Improvement is afforded in the recognition of wide-band data transmitted in the form of a data sequence to a network element of an analog, cellular network, notably a mobile radio set or a base...
6901112 Ultra wide bandwidth spread-spectrum communications system  
An ultra wide bandwidth, high speed, spread spectrum communications system uses short wavelets of electromagnetic energy to transmit information through objects such as walls or earth. The...
6880097 Method and device for checking the synchronization between two nodes Ni-1, Ni in a network  
The invention concerns a method of checking the synchronization between at least two nodes Ni−1, Ni, with i=1, . . . , n in a network, each of said nodes having respectively an internal clock...
6879580 Combined CDMA multi-service carrier and TDMA/CDMA packet carrier  
The present invention provides systems and methods for coordinating calls within hybrid cells that support both an all services carrier and a best-efforts carrier, wherein the all services carrier...
6870819 Device for exchanging radio signals provided with time markers for synchronizing clocks  
Radio transmission of chronometric information. A device comprising an antenna (A 1 , A 2 ) to which there are coupled on one hand a generator (G 1 , G 2 ) generating a signal to be sent (e 1 , e 2...
6862269 Satellite with omnidirectional coverage  
The invention concerns a satellite having at least two antennas ( 3, 5 ) whose radiation patterns overlap, at least in part and means ( 45; 47, 49, 51 ) for receiving the sum of the signals from...
6859450 Method for coordinated collision avoidance in multi-transceiver frequency hopping wireless device  
An improved method for preventing collisions in a multi-transceiver access point for use with frequency hopping RF transceivers includes determining the next channel frequencies to be used by each...
6859443 Bandwidth allocation for communication systems  
A method of dynamic modification of a communication link is provided. The method includes assigning a new carrier frequency to a first communication link. The method further includes adjusting the...
6845085 Synchronization method for a processing communication satellite  
The present invention provides a highly accurate synchronization method for a satellite communication system ( 100 ). The system maintains a downlink symbol counter at an earth terminal and...
6839332 Method for transmission of circuits, packets, and cells in a satellite/wireless TDMA system  
According to an exemplary embodiment an architecture for a new integrated TDMA system capable of carrying circuit data (e.g., voice, vides, ISDN), packet data (e.g., X.25, Frame Relay, Internet,...
6829358 Processing channel resets while performing a ciphering configuration change in a wireless communications protocol  
A first station communicates with a second over first and second channels. The first station includes first and second ciphering configurations, and a ciphering engine. The ciphering engine uses...
6810028 Open loop timing control for synchronous CDA systems  
Method and apparatus for maintaining synchronization in a CDMA communication system by operating closed loop timing control between a radio base unit and subscriber units, operating open loop...
6788947 Method for synchronization of base stations which are coupled to different switching system parts in a mobile radio network  
A first base station, which is coupled to a first switching system part is set up within radio range of a second base station, which is coupled to a second switching system part. After initial...
6788655 Personal communications device with ratio counter  
The invention is directed to a personal communications device with a ratio counter providing tracking transitioning edges of two clocks so as to generate a signal to initiate capture of a clock...
6775318 Method and apparatus for code group identification and frame synchronization in DS/CDMA systems  
The present invention provides an apparatus and method for code group identification and frame synchronization for cell searching used in wide-band DS-CDMA cellular systems. This method...
6771659 Method and apparatus for a selective acknowledgement scheme in a modified unacknowledge mode for use over a communications link  
A modified unacknowledge mode of a telecommunications system interface is defined by providing for a special signaling indication by way of a selected packet, signaling sequence, message, or the...
6771615 Synchronization apparatus and method for a return link power control for satellite systems  
An approach for providing message synchronization in a communication system is disclosed. Using a selected channel coding method (e.g., Golay coding), an encoder encodes a message for transmission...
6760316 Method and apparatus for the synchronization of multiple cable modem termination system devices  
A plurality of CMTS devices are linked together and synchronized to facilitate communication between the respective CMTS devices and respective downstream cable modems. According to one embodiment...
Matches 51 - 100 out of 322 < 1 2 3 4 5 6 7 >