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6917609 |
Method and apparatus for CDMA pn scanning at indoor and other obstructed locations
A test scanner located where it does not directly receive GPS signals relies on a second device, a reference transmitter with a GPS receiver, to provide time information. The reference transmitter...
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6914895 |
Method for synchronization in a communication network and implementing appliances
A process for synchronization in a communications network comprising at least two buses interconnected by a wireless communications network, each bus being linked to the wireless communications...
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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...
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6909701 |
Method and system for distributing a timing signal
A system for distributing a timing signal is disclosed. A timing generator inserts a phase of a timing signal and a command signal into a framed signal. A distribution module receives the framed...
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6894982 |
Wireless communication terminal and method of controlling operation clock for processing transmitting/receiving data in the same
A timing of a receiving slot at the wireless receiving section 11 is detected at the interrupt generation section 12 , which generates a receiving slot start interrupt signal (b) and a receiving...
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6894995 |
Apparatus and method for performing initial cell search in wireless communication systems
The system and method of the present invention establishes a communication link between a user equipment (UE) and a base station in a communication system having a plurality of base stations which...
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6891822 |
Method and apparatus for transferring isocronous data within a wireless computer network
A communication protocol includes a hierarchical arrangement of time slots within a communication channel for transmission and reception of isochronous data (e.g., video, audio, etc.) between...
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6892072 |
Method of optimizing the search for cells in a mobile telecommunication network
A method of optimizing the search for cells in a mobile telecommunication network comprising a plurality of cells, each cell accommodating one base station exchanging synchronization data with a...
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6888819 |
Media access control utilizing synchronization signaling
A novel media access control (MAC) mechanism utilizing synchronization signaling that enables nodes from different networks having different technologies and protocols to coexistence using the same...
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6888882 |
Reducing collisions in a radio communications system
A method and apparatus are provided that allows a predetermined training sequence to be selected from among different choices. According to one aspect of the present invention, the invention...
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6888820 |
System and method for treating a call for call processing
The invention comprises of a telecommunications signaling processor that processes signaling system #7 telecommunications signaling messages to select asynchronous transfer mode virtual connections...
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6889048 |
Call processing method and apparatus for effective QoS control in mobile communication system
A call processing method and apparatus for effective QoS (Quality of Service) control in a mobile communication system is provided. In one embodiment of the present invention, a base station checks...
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6885656 |
Asynchronous interference avoiding method and asynchronous interference avoiding system
In a network that roughly comprises a temporary master station and a plurality of slave stations and is an adhoc network, which can be immediately constructed in situ, and is a temporary master...
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6885647 |
Base station for compensating route delay between bases station and mobile station of CDMA mobile communication system and operation method thereof
A base station for compensating a fixed route delay between a base station and a mobile station of a CDMA mobile communication system and an operation method thereof are disclosed. This base...
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6882677 |
Method and apparatus for facilitating handoff in a wireless local area network
A method and apparatus for facilitating handoff from a network access point (NAP) that is arranged and constructed to provide service to a communications unit (CU) in a frequency hopped...
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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...
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6879830 |
Method for handover, mobile station for handover and base station for handover
A method for handing over a link between a mobile station and a network from a first base station to a second base station of the network. In the case of an existing link, link data for the link...
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6873825 |
System and method for optimizing bluetooth transmissions to overcome signal interference
Transmissions of a Bluetooth device are optimized to overcome signal interference. Mapping rules dictate different Bluetooth packet types to be used for transmission under various specified...
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6873614 |
Digital communication system having improved color code capability
A time division multiple access communication system is provided having multiple sub-channels according to known quadrature amplitude modulation techniques. Each sub-channel has a pre-determined...
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6865177 |
Apparatus and method for generating frame sync word and verifying the frame sync word in W-CDMA communication system
There is provided an apparatus and method for generating a frame sync word and verifying the frame sync word in an asynchronous CDMA communication system. In the apparatus for generating a sync...
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6865166 |
Interference management of a processing communications satellite
A satellite based cellular communications system ( 10 ) for servicing multiple user terminals ( 14 ) is provided. The satellite based cellular communications system ( 10 ) includes at least one...
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6859899 |
Method for data packet acquisition using split preamble
A data packet type communication system utilizes packet framing wherein preambles are split into two or more subpreambles, separated by a number of data or a priori known symbols. A receiver...
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6859466 |
Physical layer header for packet data
An approach for is provided for adapting to a variety of link propagation conditions is disclosed. A source terminal generates a packet data burst that includes a header and an optional payload....
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6856611 |
Radio interface synchronization
Various techniques are disclosed for unambiguously determining and tracking frame offset in asynchronous wireless communication user equipment. The user equipment determines the unambiguous...
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6847655 |
Method and apparatus for transmitting/receiving high order digital signals over two RF carriers in a radio regeneration section
A method is described for transmitting/receiving STM-4 (SDH) or STS-12 (SONET) digital signals over two RF carriers in a radio regenerator section. The method provides for performing, in...
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6839329 |
Cell flow synchronization establishing system of wireless ATM access system
A cell flow synchronization establishing system of an ATM access system, capable of establishing synchronization of cell flow between a mobile station and base stations at the time of hand-off...
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6836851 |
Two-step synchronization method in which two modules are synchronized first by frequency followed by a synchronization in phase
The present invention relates to a method for the synchronization of a first and a least one second module, each having a clock generator. The invention furthermore relates to such modules, a...
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6826161 |
Slewing detector system and method for the introduction of hysteresis into a hard handoff decision
A method for introducing hysteresis into a hard handoff decision in code division multiple access (CDMA) communications following an initial hard handoff is provided. The method introduces...
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6826400 |
Method and apparatus for concurrent monitoring of divergent wireless telecommunication systems
A portable communications subscriber unit operates as a data transfer terminal as well as an analog cellular telephone M-ES. Two modes of operation, an analog cellular communication mode and a...
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6822973 |
Apparatus and method for implementing a reduced slotted mode in a communication system
The present invention provides an apparatus and method for operating in reduced slotted mode. Following the release of the traffic channel, a mobile station ( 102 ) and base station ( 108 ) operate...
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6819909 |
Based station apparatus and communication method
Data portion transmission power controlling section 108 increases/decreases the transmission power of the transmitting data to communication terminal apparatus A according to TPC from TPC command...
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6816510 |
Method for clock synchronization between nodes in a packet network
A method and system for synchronizing clocks in a packet network that includes a master node and at least one slave node that communicate with one another is disclosed. A timer value from a master...
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6813257 |
Apparatus and methods for controlling short code timing offsets in a CDMA system
A CDMA cellular communications network ( 400 , FIG. 4 ) includes one or more aircraft ( 410 ), which relay pilot channel and control channel signals between base transceiver stations (BTS's 406,...
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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...
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6804655 |
Systems and methods for transmitting bursty-asnychronous data over a synchronous link
A method for transferring data bursts via a synchronous data link includes the step of receiving a burst of packets, each packet including a header and a frame of data compressed at a selected...
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6804527 |
System for coordination of TDD transmission bursts within and between cells in a wireless access system and method of operation
There is disclosed, for use in a first radio frequency (RF) modem shelf associated with a first one of a plurality of base stations in a fixed wireless access network, a timing distribution...
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6798791 |
Cluster frame synchronization scheme for a satellite digital audio radio system
A satellite digital audio radio system (SDARS) transmitter provides a broadcast transmission signal including a time division multiplex (TDM) mode of transmission and a coded orthogonal frequency...
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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...
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6785254 |
Wireless communication system incorporating multicast addressing and method for use
A Packet Network for use in association with a wireless communication system employs packet distribution and call set-up methods optimized to select from a plurality of network routing devices, a...
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6781976 |
Time-alignment apparatus and method for providing data frames of a plurality of channels with predetermined time-offsets
The invention relates to a time-alignment apparatus and a time-alignment method of a transmitter (TX) of a telecommunication system TELE. Successive data frames (ch 1/0 , ch 2/0 , ch 3/0 , ch 4/0 ,...
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6775263 |
Frame synchronizing apparatus using memory
A frame synchronizing apparatus using a memory in which a frame synchronizing algorithm is embodied in an ASIC(application specific integrated circuit) so as to be used in a circuit for...
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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...
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6771976 |
Radiocommunication apparatus, radiocommunication system, and radiocommunication method
A radiocommunication apparatus, a radiocommunication system, and a radiocommunication method adapted to a radio network system for attaining synchronism of a reception signal, which contains a...
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6771660 |
Method and apparatus for synchronization between MAC and physical layers in a wireless communication system when transporting ATM cells
The present invention is a novel method and apparatus for efficiently transporting and synchronizing data between the Media Access Control (MAC) and physical communication protocol layers in a...
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6771629 |
In-band signaling for synchronization in a voice communications network
Methods for determining a system latency of an audio call path of a voice communications network, and for synchronizing a remote unit ( 108 ) with a reference oscillator of a reference station (...
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6771985 |
Wireless base station that staggers the transmission of symbols to spatially multiplexed mobile stations by a predetermined time that is shorter than the symbol period
When signals for two mobile stations PS-A and PS-B are multiplexed using path division, a clock generating unit 52 generates a clock signal so as to delay the timing for transmitting symbols to...
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6768747 |
Relative and absolute timing acquisition for a radio communications system
A method and apparatus are provided that allows timing to be determined in two steps. According to one aspect of the present invention, the invention includes searching a received digital signal...
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6765894 |
Communication terminal apparatus and base station apparatus
Reception section 602 receives a signal on which signals of channels are multiplexed in a same frequency band through antenna 601 . Separation section 603 separates a part used for correlation...
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6765917 |
DS-0 synchronization over a wireless ATM link
A system and method for the transmission of synchronization information from a wireless asynchronous transfer mode (ATM) base station across a point to point or point to multipoint wireless link,...
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6763016 |
Method and system for distributing a synchronization signal in a telecommunications network
A system for distributing a synchronization signal in a telecommunications network is provided that includes a timing generator, a lower level distribution module, a bus control module and a...
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