Matches 101 - 150 out of 320 < 1 2 3 4 5 6 7 >
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6731615 Multipoint-to-point tdma transmission system using a particular burst structure, and a corresponding transmitter  
The invention relates in particular to a TDMA transmission system including transmitters synchronized to a single receiver, each of the transmitters being able to transmit to the receiver on a...
6711140 Method and apparatus for fast acquisition and synchronization of transmission frames  
A method and apparatus for providing frame acquisition and synchronization for ATM transmissions in terrestrial wireless and satellite systems. During acquisition ( 1020 ), the transmitter ( 15 )...
6700939 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...
6690658 Indoor communication system and synchronization for a receiver  
In a multi-user system for wireless transmission of video, audio and/or combined signals or general communication signals a proposal is given for the timing and synchronization of the various...
6687318 Method and communication system for synchronizing two devices with a predeterminable data transmission method  
A method and a communication system are in which a first synchronization message identifying a data transmission method with the highest-level error protection that a first device is capable of...
6684070 TDMA beacon for satellite system synchronization  
A TDMA beacon for satellite system synchronization includes a beacon signal generator and a time division multiplexed switch. The beacon signal generator generates a beacon signal. The TDM switch...
6680921 Estimation of time stamps in real-time packet communications  
Techniques are provided for efficiently compressing and reconstructing the time stamp value of a real time communications packet whose time stamp value does not fall within a normally expected...
6674730 Method of and apparatus for time synchronization in a communication system  
Time alignment of a signal from a remote unit at a hub station of a multiple access system is achieved based upon an initial time indication received from the hub station at the remote unit via a...
6665288 Method and apparatus for reducing synchronization code interference in CDMA communications systems  
In a code division multiple access (CDMA) communications system, a synchronization code is transmitted on a first channel. Information is selectively communicated on a second channel, e.g., a...
6665277 Comma free codes for fast cell search using tertiary synchronization channel  
A method of processing data comprises the receiving a frame of data having a predetermined number of time slots ( 502,504,506 ). Each time slot comprises a respective plurality of data symbols (...
6661780 Mechanisms for policy based UMTS QoS and IP QoS management in mobile IP networks  
Mechanisms for QoS mapping rules on a mobile network between a UMTS layer and an IP layer are provided. A policy server is coupled to the SGSNs and GGSNs on the mobile network and maintains a...
6657953 Signal loopback device  
A signal loopback device including a multiplexing/demultiplexing unit to carry out multiplexing/demultiplexing between a DS3 signal serving as a digital signal conforming to a DS3 C-bit parity...
6643336 DC offset and bit timing system and method for use with a wireless transceiver  
An offset estimation and bit timing system and method configured to detect a DC offset in a received signal is disclosed herein. The inventive system includes a first circuit for receiving and...
6631116 Method of indicating mini cell size  
The invention relates to a method of changing the size of mini cells belonging to an individual connection during an ongoing connection. A control mini cell is used for this purpose. The control...
6625463 Synchronization of super frames in an integrated services digital broadcasting for satellites ISDB-S system  
An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate a first detection signal and a second detection signal in response to (i) an input...
6621813 Methods and apparatus for synchronization in a wireless network  
A method of synchronizing a base station and a remote station is presented. The base station is communicatively coupled with the remote station and a reference network. The base station clock...
6570935 Method and system for demodulating a receive signal including a pilot signal  
In this demodulation method, a receive signal is demodulated estimating the fading distortion of data by detecting the fading distortion of unique word as pilot signal inserted into multiple...
6564053 Efficient high latitude service area satellite mobile broadcasting systems  
Satellite audio broadcasting systems include orbital constellations for providing high elevation angle coverage of audio broadcast signals from the constellation's satellites to fixed and mobile...
6560207 Synchronous circuit of FM multiplex broadcasting receiver  
Data counters and perform a counting operation which is synchronized with the respective timing of receiving multiplex data from a VICS data broadcasting station and a D-GPS data broadcasting...
6556592 Correction method for clock synchronization with ISDN in cell station for use in private-network-use PHS and a circuit therefor  
This invention intends to provide a correction method for synchronization between an air side and a network side of a PHS cell station. The correction method and apparatus enables a continued...
6542480 Satellite payload processing system using polyphase demultiplexing, quadrature phase shift keying demodulation and rate alignment  
A satellite payload processing system for processing an uplink signal consisting of a plurality of single-channel-per-carrier, frequency division multiple access carriers comprises a polyphase...
6539003 Method for acquisition and synchronization of terminals in a satellite/wireless TDMA system  
A TDMA system ( 11 ) is provided using a programmable, fixed-period frame structure for communication between network terminals ( 6,10 ). All bursts are timed with respect to this programmable...
6529740 Group radio with subscriber-radio controlled channel selection  
A point-to-multipoint (PTM) communication system ( 20 ) includes a cellular radio infrastructure ( 22 ) having base stations ( 32 ) implemented in satellites ( 34 ) placed in low earth orbits ( 38...
6529485 Method for generation of accurate doppler-free local clock in satellite/wireless networks  
A method for generating a Doppler-free local clock in a communications network having a master reference terminal ( 400 ) and a terminal ( 200 ) exchanging reference and management bursts, includes...
6519449 Method and apparatus for a signal power control in a wireless communication system  
The invention provides a signal power control method and apparatus for a wireless system to control the power level of a received signal transmitted over a radio link so as to counteract...
6507926 Mitigation of false co-channel uplink reception in a processing satellite communication system using stagger  
The present invention provides a method and apparatus for preventing show-thru (and therefore misinsertion of unintended traffic) among uplink beams transmitted to a satellite. The method includes...
6501743 Apparatus and method of network synchronization in asymmetric two-way satellite communication system  
An apparatus and method of network synchronization for synchronous burst transmission in an asymmetric two-way satellite communication system. Network synchronization information is broadcast to...
6496488 Modularly clustered radiotelephone system  
A power-conserving time division multiple access (TDMA) radio telephone system is disclosed in which a cluster of subscriber stations, remote from a base station, employs a common pool of...
6493334 Spread spectrum time-division multiple access communication scheme  
A new DTX-MAC protocol is proposed for a cellular radio telecommunications system with many users. Several users are allowed to transmit packets within a time-slotted frame structure. Direct...
6490704 Method for correcting synchronization error and radio system  
The invention relates to a digital radio system and to a method for correcting a synchronization error in a digital radio system comprising at least one base station ( 100 ) communicating with...
6487252 Wireless communication system and method for synchronization  
An orthogonal frequency division multiplexed wideband communication system provides improved time and frequency synchronization by inserting an unevenly spaced pilot sequence within the...
6480483 Frame synchronization system between base stations of mobile radio communication system and base station device employing this system  
The disclosure concerns an inter-base station frame synchronization system for use in a mobile communication system having at least one master base station and a plurality of slave base stations....
6477151 Packet radio telephone services  
A method of synchronising radio signal transmission slots at a mobile station to radio signal reception slots at a base station subsystem to account for a propagation delay between the mobile...
6452948 Method for baud-clock phase synchronization in a TDMA digital communications system and apparatus therefor  
A time division multiple access digital communications system ( 12 ) is provided. The system ( 12 ) has a base station ( 14 ) configured to generate a receive baud clock ( 86 ) and has a receiver (...
6449290 Methods and arrangements in a radio communications system  
Methods and an arrangement for synchronizing communication of framed data via asynchronous base stations (BS 1 , BS 2 ) in a cellular communication system are presented. The synchronization methods...
6434361 Synchronization burst processor for a processing satellite  
A synchronization burst processor ( 56 ) used in a processing satellite ( 12 ) in a satellite based communications system ( 10 ) is provided with a sync burst memory ( 72 ), a first double...
6430170 Method and apparatus for generating random numbers from a communication signal  
A system and method for generating random numbers in a wireless communication network is presented. The noise present in the signal received by a wireless receiver is extracted to form random...
6377556 METHOD AND APPARATUS TO RESYNCHRONIZE PPP ON UM INTERFACE WITHOUT AFFECTING PPP ON A RM INTERFACE AND TO RESYNCHRONIZE PPP ON A RM INTERFACE WITHOUT AFFECTING PPP ON A UM INTERFACE  
A method, within a wireless communication system, and a wireless MT2 device which provide for the resynchronization of a PPP link on each one of a U m and R m interface without affecting the...
6356763 Downlink observed time difference measurements  
A mobile communication station in a wireless communication network is used to measure the respective times of arrival of radio signals respectively transmitted by a plurality of radio transmitters...
6345043 Access scheme for a wireless LAN station to connect an access point  
An access scheme for a wireless LAN station to connect an access point on the network. This scheme allows a wireless station to finish all the processes from search to registration with an AP at a...
6344821 Mobile communication system and inter-bases station synchronzing method  
A plurality of base stations each calculate a distance function value with respect to a mobile station by detecting up signal therefrom in their own receiver (step S 15 ), and transmit the...
6331998 Partially matched filter for spread spectrum communication  
A method of acquiring a transmitted pseudo noise (PN) code c(t) from a received signal r(t) that is data modulated. The method includes, for a BPSK modulated signal, multiplying the received signal...
6320852 Base station host apparatus used in mobile communication system which employs a site diversity receiving method and a signal processing method  
A technique used in a mobile communications system. A mobile terminal station transmits a signal subjected to an error-correction encoding processing. Each of a plurality of base stations receives...
6317439 Architecture for a SONET line unit including optical transceiver, cross-connect and synchronization subsystem  
A SONET interface line unit which includes an interface to a SONET ring, an STM switch fabric, and STM synchronization function within a single module. The line unit includes an optical interface...
6308076 Methods and systems for synchronization with multiple frequency offsets and known timing relationships  
Methods and systems are provided which store frequency settings before switching frequencies, for example, before assignment to the traffic channel when switching between a ground station and...
6304560 Personal handy-phone system wireless local loops and methods of transmitting information within personal handy-phone systems  
The present invention provides methods of transmitting information within a personal handy-phone system wireless local loop and personal handy-phone system wireless local loops. One embodiment of a...
6298072 Real-time transaction synchronization among peer authentication systems in a telecommunications network environment  
System and method for synchronizing transaction data in real-time within a network environment. The system and method include and involve a plurality of authentication subsystems. Each...
6298048 TDMA system timer for maintaining timing to multiple satellite simultaneously  
A method for timing correction in a communications receiver includes the steps of (a) setting a timer to a known value; (b) defining a first window by defining a first rollover value; (c) defining...
6285666 Spread-spectrum communication method and apparatus  
The communication period of spread spectrum data is divided into a plurality of portions, and an adjustment period for receiving the spread spectrum data is provided between one data-communication...
6278699 Synchronization techniques and systems for spread spectrum radiocommunication  
A method and apparatus for synchronizing to a time structure associated with base station transmissions in a radiocommunication system are described. A broadcast control channel can contain...
Matches 101 - 150 out of 320 < 1 2 3 4 5 6 7 >