| BEIJING SAMSUNG TELECOM R&D CENTER Patent applications |
| Patent application number | Title | Published |
|---|
| 20110182244 | METHOD FOR SUPPORTING CONTEXT MANAGEMENT BY HOME NODE-B - A method for managing user context by a Home evolved NodeB (HeNB) is provided. The method includes requesting, by a Mobility Management Entity (MME), the HeNB to reserve a first type of User Equipment (UE) context information, obtaining, by the HeNB, the MME of the UE according to the first type of UE context information after receiving data, and notifying, by the HeNB, the MME of an arrival of the data. With the method according to the present invention, it is guaranteed by an HeNB system that a terminal can receive downlink signaling after activation of a local routing optimization service by the terminal. | 07-28-2011 |
| 20110045823 | METHOD FOR TRANSMITTING AND RECEIVING INFORMATION OF RELATION BETWEEN HOME BASE STATIONS - An apparatus and method for transmitting and receiving information regarding the relation between home base stations. The method includes sending, by a first entity, a message to a second entity, wherein the message comprises an identity of the first entity, and sending, by the second entity, a message to the first entity, wherein the message comprises information indicating whether an adjacent home base station and the first entity are serviced by a same gateway. | 02-24-2011 |
| 20110032871 | METHOD FOR ESTABLISHING CONNECTION BY HNB - A method for establishing a connection of a home Node B (HNB), the method comprising the steps of: transmitting, by the HNB, an attachment request message including an identifier of a closed subscriber group (CSG) where the HNB is located and information on location of the HNB to an operation and maintenance center (OMC); selecting, by the OMC a device establishing a connection with the HNB using the information on location of the HNB; transmitting, by the OMC, an attachment response message including information on the device to the HNB; establishing, by the HNB, a connection with the selected device. With the method proposed in the present invention, a UE can switch between HNBs in the same CSG through interface X2. Meanwhile, such information as the radio resource management and so on can be exchanged between two HNBs. | 02-10-2011 |
| 20100266061 | METHOD AND DEVICE FOR PRE-CODING IN MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM - A signal processing method in an MIMO multi-carrier system is disclosed comprising: receiving by a receiver signals of a plurality of sub-carriers transmitted from a transmitter; dividing the sub-carriers into a plurality of sub-carrier blocks according to the correlation between adjacent sub-carriers, each sub-carrier block containing K sub-carriers; selecting a feedback sub-carrier pre-coding matrix ( ) and a rotation matrix ( ) for each sub-carrier block, and then sending the information on the pre-coding matrix and the rotation matrix back to the transmitting end. The present invention provides the method and device for effectively settling the feedback problem in an MIMO/OFDMA system, thereby greatly reducing the number of pre-coding weight matrices needed to feed back to the transmitting device. | 10-21-2010 |
| 20100246457 | PRE-CODING/PRE-DECODING METHOD AND APPARATUS FOR DATA TRANSMISSION IN MOBILE COMMUNICATION SYSTEM - A pre-coding/decoding method and apparatus for data transmission between a transmitting end and a receiving end is provided. The pre-coding method for data transmission through Time Division Duplexing (TDD) in a mobile communication system includes estimating downlink channel state information based on an uplink sounding signal, and pre-coding a data symbol and a reference signal based on the estimated downlink channel state information. | 09-30-2010 |
| 20100220809 | Method for transmitting multi-antenna superimposed symbol and apparatus using the same - A method for transmitting symbols in a communication system, includes dividing N symbols to be transmitted at one time into 2 groups. A first processing is performed on each of a plurality of symbols in a first group in order to obtain a first group of superimposed symbols. A second processing is performed on each of a plurality of symbols in a second group to obtain a second group of superimposed symbols. Each of the first group of superimposed symbols is transmitted one by one by a first antenna, and corresponding symbols in the second group of superimposed symbols are transmitted by a second antenna. The first processing and the second processing respectively include a conjugate cancellation operation. | 09-02-2010 |
| 20100195505 | METHOD FOR INITIALIZING PROTECTION DEVICE AND PROTECTION DEVICE IN WIRELESS MICROPHONE BEACON SYSTEM - A method for initializing a protection device PD comprising steps of: receiving by a beacon receiver beacon information from other protection devices around the PD; sending by the beacon receiver the received beacon information to a channel monitoring decision maker within a time period set in a channel monitoring timer; determining by the channel monitoring decision maker whether there exists any primary beacon transmission device PPD; if yes, deciding the PD as a secondary beacon transmission device SPD; if no, deciding the PD as a PPD; receiving by an initialization process decision maker a determination result from the channel monitoring decision maker and determining an operation status of the PD within a time period set in the initialization process timer; outputting by the initialization process decision maker the determination result to a transmitter of the PD to decide whether the transmitter has transmitted any data or request information. | 08-05-2010 |
| 20080298296 | METHOD FOR TRANSMITTING MULTICAST DATA IN WIMAX/WIBRO RELAY SYSTEM - A method for transmitting multicast data in a WiMax/WiBro relay system, including transmitting carrier-interference-noise ratios from UEs to corresponding Relays; selecting the minimum value among the carrier-interference-noise ratios; determining the modulation and coding mode according to the selected minimum value; transmitting the modulation and coding mode to BS; selecting a modulation and coding mode with a highest rate for multicast data on an access link; transmitting the final modulation and coding mode to the Relays; and transmitting data via the access link with the modulation and coding mode determined by the BS. | 12-04-2008 |
| 20080267113 | RS-BASED NETWORK TRANSMISSION METHOD - A Relay System (RS)-based cellular network transmission method for MT having a function of single input and single output is provided. The method includes transmitting broadcast information to all RSs and Mobile Terminals (MTs); transmitting required data to each RS in an Orthogonal Frequency Division Multiplexing (OFDM) mode; performing the operations of selection of modulation scheme, addition of CP, addition of symbols for channel estimation and selection of OFDM symbols; feeding feedback information to the Base Station (BS); transmitting a synchronization request to the BS; transmitting a synchronization acknowledgement to the RS; transmitting information to each MT belonging to the BS; transmitting information to each MT belonging to the RS; the MT belonging to the BS transmitting ACK/NACK information to the BS; the MT belonging to the RS transmitting ACK/NACK information to the BS; and the BS informing the RS of the received ACK/NACK information. | 10-30-2008 |
