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Class 370/280 - Time division


Subclass of Class 370 - Multiplex communications
Definition: Subject matter wherein duplex transmission and reception
No. of patents: 715
Last issue date: 02/07/2012


1                      
NumberTitleIssue Date
8111641Joint detection (jd) method for adjacent cells in TDD/CDMA system
A method for performing multi-user joint-detection in a neighboring cell in a TDD-CDMA system presets slot types and includes: a network device configuring a slot type of each uplink slot in its administrated cells and a base station of each cell obtaining a slot ty...
02/07/2012
8102785Calibrating radiofrequency paths of a phased-array antenna
The present invention provides a method of calibrating base station comprising a plurality of antennas and operating in an Orthogonal Frequency Division Multiplex (OFDM) and Time Division Duplex (TDD) mode. One embodiment of the method includes a method of calibrati...
01/24/2012
8098602System and method for transferring data over full-duplex differential serial link
A data transmission technique where high speed data is transmitted differentially in a forward channel by way of a serial link, and relatively low speed data is differentially modulated onto the forward channel signal for transmission in a reverse channel via the li...
01/17/2012
8089906Dual mode transceiver
A circuit is disclosed with an external coupling port for coupling to an external antenna, for example. The circuit has an FDD receive path including a narrowband passband filter. The circuit has a TDD receive path bypassing the narrowband passband filter but relyin...
01/03/2012
8077640Method for supporting asymmetric service flexible in multi-carrier time division duplex mobile communication system
A method to support dissymmetry service for multicarrier time division duplexing mobile communication system, which contains adopting different uplink and downlink time gap conversion point to support dissymmetry service among multicarrier frequency of different cel...
12/13/2011
8072911Methods and devices relating to downlink assignments
The invention relates to a method in a first communication device of receiving control information over a radio channel from a second communication device. The first communication device receives a subframe over the radio channel, and determines whether the subframe...
12/06/2011
8068445Scheduling uplink sounding signals
A method and apparatus are provided for scheduling a transmission of uplink sounding signals for a mobile station (MS). The method comprises receiving a request to send the MS downlink signals associated with a service flow at a first frame, searching a scheduling d...
11/29/2011
8054767Method of transmitting scheduling information in TDD system
A method of transmitting scheduling information in time-division-duplex(TDD) system is provided. The method comprises configuring a radio frame, the radio frame comprising at least one downlink subframe and at least one uplink subframe, wherein a downlink subframe i...
11/08/2011
8036145Frame structure for a wireless communication system
A frame format used in a wireless communication system, more particularly an OFDMA TDD wireless communication system, of the kind that includes a base station and a plurality of fixed or mobile subscriber stations, the base station maintaining connections with each ...
10/11/2011
8018879Wireless transmission method of using efficient high performance frame structure in wideband TDD system
The present invention provides a method of wireless transmission using a high-efficiency and high-performance frame structure used by the broadband TDD system, wherein the method includes: dividing a sub-frame with a fixed length into N+1 basic slots and three speci...
09/13/2011
8000273Method for transmitting uplink sounding reference signal for LTE system
A method for transmitting an uplink sounding reference signal includes indexing Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols within a single radio frame for transmitting a Sounding Reference Signal (SRS) as a number k, and calculating a value ...
08/16/2011
8000272Uplink scheduling grant for time division duplex with asymmetric uplink and downlink configuration
Signalling uplink and downlink scheduling grants for a plurality of subframes in a time division duplex frame is addressed. In one aspect the allocated uplink subframes are divided into groups, so the number of groups equals the number of downlink subframes being al...
08/16/2011
7978634TDD system based cell handoff method and user equipment
The present invention discloses a cell handoff method and a UE based on a TDD system. A UE measures received pilot channels of a source cell and a neighboring cell according to a measurement control message and reports measurement result to a RNC. The RNC, determine...
07/12/2011
7961654System and method for concurrent wireless voice and data communications
Unitary transceiving units employ a multiple carrier, time-division-multiple-access (TDMA), time-division-duplex (TDD protocol to conduct concurrent wireless voice and data communications wherein a first transceiving base station unit tethered to a network interface...
06/14/2011
7957329Method of performing hybrid automatic repeat request (HARQ) in wireless communication system
A method of performing hybrid automatic repeat request (HARQ) performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving downlink assignments in a first subframe, a downlink assignment being transmitted based on ...
06/07/2011
7948924Apparatus for optionally supporting time division duplex and frequency division duplex in a wireless communication system
A Radio Frequency (RF) front-end apparatus in a wireless communication system is provided. The apparatus includes a plurality of BandPass Filters (BPFs) for band-pass filtering a transmission signal or a reception signal, at least one circulator for dividing a signa...
05/24/2011
7929467Method for transmitting TDD frames with increased data payload
Method for transmitting through a bidirectional communication channel at least one conventional frame (CVFR) split into time slots SLj (for j=1 to L) separated from each other by guard intervals G, each time slot SLj being allocated either to a first or to a second ...
04/19/2011
7929468Method for improving coexistence between adjacent TDD and FDD wireless networks
A method for reducing interference between FDD and a TDD interfering radio networks including identifying respective radio entities for which the interferences should be reduced; defining a time pattern comprising time slots on each of the interfered channels, and r...
04/19/2011
7911986Apparatus and method for measuring bi-directional radio channel having multiple antenna
An apparatus and method for measuring bi-directional radio channel with multiple antenna are provided. The apparatus includes a transmitter for amplifying a signal that is frequency-up converted to radio frequency and removing a signal of other frequency band, a hig...
03/22/2011
7907554Method of communication between mobile station and base station in mobile communication system
Method of communication between a mobile station and a base station in a mobile communication system of IMT-2000 communication network basis, which is suitable for effective transmission of various multimedia information within a given channel capacity, the method i...
03/15/2011
7907553Method of communication between mobile station and base station in mobile communication system
Method of communication between a mobile station and a base station in a mobile communication system of IMT-2000 communication network basis, which is suitable for effective transmission of various multimedia information within a given channel capacity, the method i...
03/15/2011
7907552MIMO communication system with user scheduling and modified precoding based on channel vector magnitudes
A multiple-input, multiple-output (MIMO) communication system is configured to perform user scheduling and associated precoding. The system includes multiple terminals and at least one base station configured to communicate with the terminals. The base station is op...
03/15/2011
7881237Compensation for residual frequency offset, phase noise and I/Q imbalance in OFDM modulated communications
A method and apparatus for processing a radio frequency signal. The method includes compensating a digital in-phase signal and a digital quadrature signal for any imbalance; converting the compensated digital in-phase signal and the compensated digital quadrature si...
02/01/2011
RE42068Method and apparatus for reducing co-channel interference in a frame-synchronized wireless communication system
The present invention is a method and apparatus for reducing co-channel interference. The present invention includes a powerful means for eliminating co-channel interference from base stations in a wireless communication system. The present co-channel interference r...
01/25/2011
7876716Base station apparatus and radio communication method
A base station (10) performs bi-directional radio communications with terminal station apparatuses using communication frames each having time slots and being composed of a first region with a predetermined open-loop period and a second region with an open-lo...
01/25/2011
7860036Methods and apparatus for including mode information in a frame for system acquisition
Methods and apparatus for including mode information in a wireless transmission frame, which is useful for system acquisition. In particular, a first information bit is provided in a preamble of a transmission frame, where the bit is configured to indicate that a wi...
12/28/2010
7855983Time division duplex front end module
An RF module adapted for direct surface mounting to the top surface of the front end of the motherboard of a wireless base station such as, for example, a femtocell. The module comprises a printed circuit board having a plurality of direct surface mounted electrical...
12/21/2010
7808934TDD frame format in wireless mesh network
In a wireless mesh network a method includes, at a first node, receiving a transmission from a second node during a first sub-frame of a frame with a first transceiver operating with a first center frequency; processing the received transmission; and transmitting, a...
10/05/2010
7778208Wireless communication system for time division duplex
Disclosed is a wireless communication system applicable to a time-division duplex transceiver system. The time-division duplex mobile communication system can achieve miniaturization, low power consumption and low costs by using a frequency conversion circuit includ...
08/17/2010
7733814Separation and combination of multiple channels in a bi-directional time-division communication system
A time-division communication system wirelessly receives a communication signal during receive time periods and wirelessly transfers a communication signal during transmit time periods. These communication signals have multiple receive and transmit channels. The com...
06/08/2010
7706308Wireless communication system and method for offering hybrid duplexing technology
Disclosed is a wireless communication system for providing a service in a time division duplexing (TDD) mode and a frequency division duplexing (FDD) mode according to a duplexing mode determination factor of a mobile station in a base station communicating with the...
04/27/2010
7693094Apparatus for bidirectional communication using auxiliary band in wireless communication system
An apparatus for bidirectional communication using one or more auxiliary bands in a wireless communication system is provided. A primary band transmitter transmits data over one or more primary bands in a frame. A primary band receiver receives data over the one or ...
04/06/2010
7668122Communication apparatus using a transmission medium and method for the same
Provided is communication apparatus and method using a transmission medium, in an environment where at least one transmitter and at least one receiver are connected to at least one human body which is a conductive transmission medium, in which the receiver requiring...
02/23/2010
7639635Cellular communication system and method for coexistence of dissimilar systems
A cellular communication system comprises first and second serving communication units supporting respective first and second time division duplex (TDD) modes of operation on respective first and substantially frequency-adjacent second frequency channels comprising ...
12/29/2009
7626953Communications networks
A communications network comprising a plurality of first stations and a plurality of second stations, said first stations being arranged to communicate with the second stations, said first and second stations being arranged so that each of said first and second stat...
12/01/2009
7616592Method of communication between mobile station and base station in mobile communication system
Method of communication between a mobile station and a base station in a mobile communication system of IMT-2000 communication network basis, which is suitable for effective transmission of various multimedia information within a given channel capacity, the method i...
11/10/2009
7596105User equipment for synchronizing to a TDD base station
A time division duplex (TDD) user equipment (UE) is configured to synchronize to a TDD base station. The UE includes a receiver configured to receive a primary synchronization code along with a plurality of secondary synchronization codes from a TDD base station. Th...
09/29/2009
7596106System and method for generating flexible time slot in internal voice mail system
A system and method for generating a flexible time slot in an internal voice mail system, the system includes: a first counter/time slot playback device operating as a counter in response to a system synchronization signal and outputting at least one time slot (TS) ...
09/29/2009
7558223OFDM receiving method of OFDM receiver for receiving an OFDM signal via a plurality of space paths
OFDM signals each including a plurality of subcarriers (including data carriers and pilot carriers) orthogonal to each other are received by a plurality of receiver antennas. The received OFDM signals are each OFDM-demodulated into a plurality of receive subcarriers...
07/07/2009
7519011Frame structure for radio communications system
In one embodiment, the present invention includes a repeating frame for a time division radio communications system with a sequence of uplink slots each having a predetermined duration, a sequence of downlink slots, each having a predetermined duration that is great...
04/14/2009
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