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公开(公告)号：KR1020090127603A
公开(公告)日：2009-12-14
申请号：KR1020080053663
申请日：2008-06-09
Applicant: 삼성전자주식회사
CPC classification number: H04L5/0091 , H04L5/0048 , H04W72/0453 , H04W72/1278
Abstract: PURPOSE: An apparatus and method for subcarrier allocating in wireless communication system are provided to keep identically the structure of tile and pilot density. CONSTITUTION: The number of resource element for constituting the miniature tile in consideration of the pilot densities, and the number of pilot resource elements and number of data resource elements pitch are determined(203). In the miniature tile, the location of the pilot resource element pitches is determined(205). By using resource elements which are continue to the time domain or the frequency domain, the miniature tile is composed(207). By using consecutive one or more miniature tiles, tile is composed(209). By using consecutive one or more tiles, subchannel is composed(211). According to the subchannel configuration, data is allocated in subcarrier and is transmitted.
Abstract translation: 目的：提供一种用于无线通信系统中子载波分配的装置和方法，以保持瓦片的结构和导频密度。 构成：考虑导频密度构成微型瓦片的资源元素的数量，导频资源元素的数量和数据资源元素间距的数量被确定（203）。 在微型瓦片中，确定导频资源元件间距的位置（205）。 通过使用继续到时域或频域的资源元素，构成微型瓦片（207）。 通过使用连续的一个或多个微型瓦片，构成瓦片（209）。 通过使用连续的一个或多个瓦片，组成子通道（211）。 根据子信道配置，数据被分配在子载波中并被发送。
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公开(公告)号：KR1020090100877A
公开(公告)日：2009-09-24
申请号：KR1020080026382
申请日：2008-03-21
Applicant: 삼성전자주식회사 , 한국교통대학교산학협력단
IPC: H04B7/04
CPC classification number: H04B7/0417 , H04B7/0404 , H04B7/0632 , H04B7/0634 , H04B7/0639 , H04L25/0204 , H04L25/0224 , H04B7/0617 , H04B7/0413
Abstract: PURPOSE: An apparatus and a method for uplink beam forming and space-division multiple access in a multi-input multi-output wireless communication system are provided to form a beam, thereby maximizing an SINR(Signal to Interference Noise Ratio). CONSTITUTION: An apparatus for uplink beam forming and space-division multiple access in a multi-input multi-output wireless communication system includes a generator, one transmission RF chain(116), an RF switch(117), and beam formers(118). The generator generates an uplink signal. The transmission RF chain converts a baseband signal from the generator to a signal of an RF band. The RF switch switches an RF signal from the transmission RF chain to one among the beam formers. One of the beam former multiplies the RF signal from the RF switch with a corresponding weight vector and transmits it through antennas(101,102,103).
Abstract translation: 目的：提供一种用于多输入多输出无线通信系统中的上行链路波束形成和空分多址的装置和方法，以形成波束，从而使SINR（信号与干扰噪声比）最大化。 构成：用于多输入多输出无线通信系统中的上行链路波束成形和空分多址接入的装置包括发生器，一个发射RF链（116），RF开关（117）和波束形成器（118） 。 发生器产生上行链路信号。 发射RF链将来自发生器的基带信号转换成RF频带的信号。 RF开关将RF信号从发射RF链切换到波束形成器之一。 波束形成器之一将来自RF开关的RF信号与相应的权重向量相乘，并通过天线（101,102,103）发送它。
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公开(公告)号：KR1020080114102A
公开(公告)日：2008-12-31
申请号：KR1020070063345
申请日：2007-06-26
Applicant: 삼성전자주식회사
CPC classification number: H04B7/2693 , H04W56/001 , H04L27/2656
Abstract: A system for acquiring base station synchronization and method thereof are provided to reduce an installation cost of a base station by acquiring synchronization even though the base station has not a GPS receiver. A method for acquiring base station synchronization comprises the following steps: a step for transmitting a frame generated according to acquired frame synchronization to at least one or more base station after a first base station acquires frame synchronization by receiving a GPS signal including synchronous acquisition information from an artificial satellite(300); a step for estimating up link frame first synchronization time of a second base station using a receiving time of down link frame if the second base station receives the down link frame from among frames(308); a step for transmitting a first message generated by the second base station to the first base station in the up link frame first synchronization time of the second base station(312); a step for calculating a synchronization time offset value by comparing a receiving time of the first message with the up link frame synchronization time about the first base station if the first base station receives the first message(314); a step for transmitting a second message including a synchronization time offset value to the second base station(316); and a step for acquiring a frame synchronization by using the synchronization time offset value included in the second message if the second base station receives the second message(320).
Abstract translation: 提供了一种用于获取基站同步的系统及其方法，以便即使基站还没有GPS接收机来通过获取同步来降低基站的安装成本。 一种用于获取基站同步的方法，包括以下步骤：在第一基站通过接收包括同步采集信息的GPS信号在第一基站获取帧同步之后，将根据所获取的帧同步产生的帧发送到至少一个或多个基站的步骤， 人造卫星（300）; 如果第二基站从帧（308）接收到下行链路帧，则使用下行链路帧的接收时间估计第二基站的链路帧第一同步时间的步骤; 用于在第二基站（312）的上行链路帧第一同步时间中将由第二基站生成的第一消息发送到第一基站的步骤; 如果第一基站接收到第一消息（314），则通过将第一消息的接收时间与关于第一基站的上行链路帧同步时间进行比较来计算同步时间偏移值的步骤; 用于将包括同步时间偏移值的第二消息发送到所述第二基站的步骤; 以及如果所述第二基站接收到所述第二消息（320），则通过使用包括在所述第二消息中的所述同步时间偏移值来获取帧同步的步骤。
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公开(公告)号：KR1020080079734A
公开(公告)日：2008-09-02
申请号：KR1020070020017
申请日：2007-02-28
Applicant: 삼성전자주식회사
CPC classification number: H04W16/28 , H01Q3/26 , H01Q21/205 , H04B7/0617 , H04W72/082
Abstract: A beamforming device using a sector common antenna in a wireless communication system and a method therefor are provided to perform a beamforming process by sharing an antenna for all sectors, thereby decreasing system complexity by reducing the number of overall antennas of a base station. A beam coefficient calculator(310) calculates beam coefficients for minimizing interference to neighboring sectors for each terminal within each sector. Plural beamformers(312-1~312-3) carry out beamforming processes for each terminal within the corresponding sectors by using the beam coefficients. Plural adders(314-1~314-N) add up signals provided from each of the plural beamformers according to each transmission antenna.
Abstract translation: 提供了一种在无线通信系统中使用扇区公共天线的波束成形装置及其方法，用于通过共享用于所有扇区的天线来执行波束形成处理，从而通过减少基站的总体天线的数量来降低系统复杂度。 波束系数计算器（310）计算波束系数，以最小化每个扇区内每个终端对相邻扇区的干扰。 多个波束形成器（312-1〜312-3）通过使用波束系数对相应扇区内的每个终端进行波束成形处理。 多个加法器（314-1〜314-N）根据每个发送天线将从多个波束形成器中的每一个提供的信号相加。
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公开(公告)号：KR1020080011822A
公开(公告)日：2008-02-11
申请号：KR1020060072276
申请日：2006-07-31
Applicant: 삼성전자주식회사
CPC classification number: H01Q3/28 , H01Q1/246 , H04B7/0617 , H04L5/0023 , H04L5/0037 , H04W52/143 , H04W52/367 , H04W52/42
Abstract: A transmission antenna gain control method in a communication system and a device are provided to control power of a power amplifier according to transmission antenna power vectors of each subchannel based on a minimum headroom value of an antenna having the minimum headroom value, thereby allocating higher transmission rates. A controller(170) controls transmission antenna gains based on a transmission antenna having minimum residual power which is not currently used, among plural transmission antennas used in a communication system. The transmission antenna power refers to power of signals transmitted through the transmission antennas. The residual power which is not currently used refers to a power ratio(headroom) between a signal transmitted through the corresponding transmission antenna and maximum power usable when the signal is transmitted through the corresponding transmission antenna.
Abstract translation: 提供通信系统和设备中的发送天线增益控制方法，用于根据具有最小净空值的天线的最小净空值，根据每个子信道的发送天线功率矢量来控制功率放大器的功率，从而分配更高的发送 率。 在通信系统中使用的多个发送天线中，控制器（170）基于具有最小剩余功率的发送天线来控制发送天线增益。 发送天线功率是指通过发送天线发送的信号的功率。 当前不使用的剩余功率是指通过相应的发送天线发送的信号与当通过相应的发送天线发送信号时可用的最大功率之间的功率比（净空）。
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Patent Agency Ranking
公开(公告)号：KR1020070033115A
公开(公告)日：2007-03-26
申请号：KR1020050087364
申请日：2005-09-20
Applicant: 삼성전자주식회사
IPC: H04B7/26
CPC classification number: H04L1/0016 , H04B17/382 , H04L1/0003 , H04L1/0009 , H04L1/0021 , H04L1/0015 , H04L5/0057
Abstract: A system and a method for allocating AMC(Adaptive Modulation and Coding) levels in a broadband wireless access communication system are provided to execute an efficient AMC process, to increase the whole system capacity, and to improve the data throughput and the quality of data by estimating the speed of each terminal in a system and allocating resources dynamically according to the speed of each terminal. A base station, if an instantaneous CQI(Channel Quality Information) value is inputted from a mobile station, obtains the difference value between the inputted instantaneous CQI value and the instantaneous CQI value received at the previous frame(501,503). The base station obtains the average CQI difference value using the obtained CQI difference value(505). Then the base station compares the average CQI difference value with the first threshold in order to estimate the speed of the mobile station(507). In case the average CQI difference value is larger than the first threshold(509), the base station selects a conservative link table for the mobile station as the speed of the mobile station is high(511).
Abstract translation: 提供了一种用于在宽带无线接入通信系统中分配AMC（自适应调制和编码）级别的系统和方法，以执行有效的AMC过程，以提高整个系统容量，以及通过以下方式提高数据吞吐量和数据质量 估计系统中每个终端的速度，并根据每个终端的速度动态分配资源。 如果从移动站输入瞬时CQI（信道质量信息）值，则基站获得输入的瞬时CQI值与在前一帧接收到的瞬时CQI值之间的差值（501,503）。 基站使用获得的CQI差值获得平均CQI差值（505）。 然后，基站将平均CQI差值与第一阈值进行比较，以估计移动台的速度（507）。 在平均CQI差值大于第一阈值（509）的情况下，基站在移动站的速度较高时选择用于移动站的保守链路表（511）。
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公开(公告)号：KR1020060068732A
公开(公告)日：2006-06-21
申请号：KR1020040107578
申请日：2004-12-17
Applicant: 삼성전자주식회사
IPC: H04B7/26
CPC classification number: H03G3/3068
Abstract: 광대역 무선통신시스템에서 부채널 할당 방식의 변경정보를 통신하기 위한 장치 및 방법에 관한 것으로서, 상기 부채널 할당 기법이 변경되는지 검사하는 과정과, 상기 부채널 할당 기법이 변경될 경우, 기지국에 전송한 이전 채널상태정보를 구성하는 비트열의 최상위 비트를 반전시키는 과정과 상기 최상위 비트를 반전한 채널상태정보를 소정채널을 통해 전송하는 과정을 포함하여, 상기 단말이 전송한 REP-RSP(Report-Response)메시지를 상기 기지국이 제대로 수신하지 못할 경우 잘못된 CQI정보를 계속해서 수신하게 되므로 오동작을 일으키게 되는 문제점을 해결할 수 있는 이점이 있다.
부채널 할당 기법, 채널 상태 정보, 다이버시티, 밴드 AMC-
公开(公告)号：KR1020060040263A
公开(公告)日：2006-05-10
申请号：KR1020040089542
申请日：2004-11-05
Applicant: 삼성전자주식회사
IPC: H04L27/26
Abstract: 본 발명은 광대역 무선통신시스템에서 복호기의 입력 연성결정값을 생성하기 위한 장치에 관한 것으로, FFT(Fast Fourier Transform) 연산후의 신호들에서 소정 전송단위로 데이터 신호들과 파일럿 신호들을 추출하여 출력하는 부반송파 디매핑기와, 상기 부반송파 디매핑기로부터의 파일럿 신호들을 이용해 타일별로 상기 전송단위별로 채널을 추정하는 채널추정기와, 상기 채널추정기로부터의 채널추정값들을 이용해 각 데이터 신호의 신호전력을 추정하는 신호전력추정기와, 상기 신호전력추정기로부터의 추정 신호 전력들을 평균하고, 상기 평균 신호 전력을 기준으로 상기 전송단위별로 추정 신호 전력의 분산을 산출하며, 상기 산출된 분산값들을 미리 결정된 기준값(Threshold)과 비교하여 간섭이 존재하는 전송단위들을 분류하는 분류기를 포함한다. 이와 같이, 본 발명은 간섭이 존재하는 전송단위(tile)들을 분류할수 있기 때문에 간섭을 고려하여 LLR(Log Likehood Ratio)을 계산할수 있는 이점이 있다.
OFDMA, soft decision value, LLR, 간섭, 복조기, 복호기, 분산, 타일-
公开(公告)号：KR102205805B1
公开(公告)日：2021-01-21
申请号：KR1020140052828
申请日：2014-04-30
Applicant: 삼성전자주식회사
Abstract: 본발명은이동통신시스템에서네트워크최적화프로세스수행방법에있어서, 적어도하나의기지국으로부터상기적어도하나의기지국이드라이브테스트(drive test)가수행되는디바이스로부터수신한상향링크신호에대한정보인상향링크무선주파수(Radio Frequency: RF) 정보를수신하는과정과, 상기디바이스로부터상기디바이스가상기적어도하나의기지국으로부터수신한하향링크신호에대한정보인하향링크 RF 정보를수신하는과정과, 상기적어도하나의기지국으로부터수신한상향링크 RF 정보와상기디바이스로부터수신한하향링크 RF 정보를기반으로 RF 환경및 성능을예측하는과정과, 상기예측한 RF 환경및 성능을기반으로상기네트워크최적화프로세스에적용되는네트워크최적화를위한, 적어도하나의파라미터를결정하는과정을포함한다.
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公开(公告)号：KR101787464B1
公开(公告)日：2017-10-19
申请号：KR1020100114250
申请日：2010-11-17
Applicant: 삼성전자주식회사
CPC classification number: H04W28/08 , H04W36/22 , H04W52/343 , H04W52/40
Abstract: 본발명은다중셀 무선접속시스템에서로드밸런싱에대한것으로, 로드밸런싱방법은, 송신출력의변경크기를결정하는과정과, 송신출력의변경으로인해핸드오버하게될 적어도하나의단말을포함하는핸드오버후보집합을결정하는과정과, 단말분류별 송신출력변경후의예상이득들을계산하는과정과, 상기예상이득들을이용하여송신출력의변경여부를판단하는과정을포함한다.
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