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公开(公告)号：KR101803347B1
公开(公告)日：2017-12-01
申请号：KR1020110131100
申请日：2011-12-08
Applicant: 한국전자통신연구원
CPC classification number: H04W36/0005 , H04W36/0061 , H04W76/10 , H04W84/045
Abstract: 본발명은펨토(femto) 기지국의동작방법에관한것이다. 본발명의동작방법은, 복수의공공지상모바일네트워크(PLMN, Public Land Mobile Network) 식별자들을방송하는단계, 복수의 PLMN 식별자들과연관된복수의폐쇄형(CSG) 식별자들을방송하는단계, 그리고방송된복수의 PLMN 식별자들및 복수의 CSG 식별자들에기반하여, 사용자장치(UE, User Equipment)와무선통신을수립하는단계로구성된다.
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公开(公告)号：KR101763799B1
公开(公告)日：2017-08-01
申请号：KR1020100099549
申请日：2010-10-12
Applicant: 한국전자통신연구원
CPC classification number: H04W72/082
Abstract: 인접셀간간섭관리방법은셀간간섭제어정보를서브프레임단위로측정하는단계와, 상기측정된서브프레임단위의셀간간섭정보를서브프레임별로적어도하나의인접셀로전송하는단계를포함한다. 인접셀 간섭이시간적으로변하는상황에서인접셀 간섭관리를동적으로함으로써시스템의성능을높일수 있고, 셀 ID에무선자원속성패턴을매핑하는간섭관리방법을제공함으로써어떠한환경에서도우수한성능을보일수 있다.
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公开(公告)号：KR1020140073346A
公开(公告)日：2014-06-16
申请号：KR1020120141495
申请日：2012-12-06
Applicant: 한국전자통신연구원
CPC classification number: H04W76/023 , H04W8/005 , H04W76/14 , H04W76/23
Abstract: A method of providing service continuity between cellular telecommunication and device-to-device communication is disclosed. According to the present invention, a method of switching between cellular telecommunication and device-to-device communication comprises the steps of: delivering, by a gateway, a create D2D bearer request message to an MME; delivering, by the MME, the create D2D bearer request message to a base station; mapping, by the base station, D2D bearer QsS to D2D radio bearer QoS and transmitting an RRC connection reconfiguration message to a terminal; receiving, by the base station, an RRC connection reconfiguration complete message meaning that a D2D radio bearer has been created from the terminal; transmitting, by the base station, a create D2D bearer response message meaning that a D2D bearer has been created to the MME; and delivering, by the MME, the create D2D bearer response message to the gateway.
Abstract translation: 公开了一种在蜂窝电信和设备到设备之间通信提供业务连续性的方法。 根据本发明，蜂窝电信与设备到设备间通信的切换方法包括以下步骤：通过网关向MME发送创建D2D承载请求消息; 由MME向基站发送创建D2D承载请求消息; 由基站将D2D承载QsS映射到D2D无线承载QoS，并向终端发送RRC连接重配置消息; 由基站接收意味着已经从终端创建了D2D无线承载的RRC连接重配置完成消息; 由基站发送一个创建D2D承载响应消息，这意味着已经向MME创建了一个D2D承载; 以及由所述MME向所述网关发送所述创建D2D承载响应消息。
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公开(公告)号：KR1020140022562A
公开(公告)日：2014-02-25
申请号：KR1020120088746
申请日：2012-08-14
Applicant: 한국전자통신연구원
IPC: H04W56/00
CPC classification number: H04W56/002
Abstract: Disclosed is a method for setting up synchronization of device-to-device communication terminals based on a cellular communication system. The method for setting up synchronization of device-to-device terminals comprises the following steps of: receiving a message to instruct synchronization with a relevant terminal from a base station; selecting a first preamble to be transmitted to synchronize with the terminal based on the message to instruct synchronization, and transmitting the selected preamble to the terminal; receiving a second preamble from the terminal; and synchronizing with the terminal using the reception timing of the second preamble when the second preamble is the preamble designated by the message to instruct synchronization. Therefore, if the present invention is used, two terminals which directly communicates with each other can be synchronized using physical layer random access channel resources used by an existing mobile communication system. [Reference numerals] (AA) D2D communication state and PRACH D2D preamble allocation; (BB) D2D communication resource allocation and D2D measurement instruction
Abstract translation: 公开了一种基于蜂窝通信系统建立设备到设备通信终端的同步的方法。 用于建立设备到设备终端的同步的方法包括以下步骤：从基站接收指示与相关终端的同步的消息; 基于所述消息选择要发送的与所述终端进行同步的第一前导码，以指示同步，以及将所选择的前导码发送到所述终端; 从所述终端接收第二前同步码; 并且当所述第二前导码是由所述消息指定的前导码以指示同步时，使用所述第二前导码的接收定时与所述终端同步。 因此，如果使用本发明，则可以使用现有移动通信系统使用的物理层随机接入信道资源来同步彼此直接通信的两个终端。 （附图标记）（AA）D2D通信状态和PRACH D2D前导码分配; （BB）D2D通信资源分配和D2D测量指令
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Patent Agency Ranking
公开(公告)号：KR101366747B1
公开(公告)日：2014-02-24
申请号：KR1020080120654
申请日：2008-12-01
Applicant: 한국전자통신연구원
IPC: H04B1/40
CPC classification number: H04B1/0003 , G06F8/61 , G06F8/66 , G06F9/4401
Abstract: 본 발명은 서비스 모드 변경을 위한 SCA(Software Communications Architecture) 기반 SDR(Software Defined Radio) 단말 장치 및 그 재구성 방법에 관한 것이다. 본 발명에 따른 SDR 단말 장치는, 프로그래밍 가능한 제1하드웨어 모듈, 제2하드웨어 모듈, 및 적어도 하나의 무선 접속 어플리케이션을 구비하는 메모리를 포함하는 하드웨어 모듈, 및 무선 접속 어플리케이션을 이용하여 서비스 모드 변경을 수행하는 재구성 코어 프레임워크를 구비하는 소프트웨어 모듈을 포함하며, 서비스 모드 변경이 발생 시, 제1하드웨어 모듈과 제2하드웨어 모듈 중 하나에 무선 접속 모드에 해당하는 무선 접속 어플리케이션을 설치하여 무선 접속 모드전환에 대응한다.
SDR, SCA, 모드 변경, 재구성-
公开(公告)号：KR1020130073528A
公开(公告)日：2013-07-03
申请号：KR1020110141419
申请日：2011-12-23
Applicant: 한국전자통신연구원
CPC classification number: H04L27/3872 , H04L27/18
Abstract: PURPOSE: A phase rotation modulation & demodulation apparatus and a method thereof are provided to prevent degradation of reception performance, and to obtain high electricity of a transmitter. CONSTITUTION: A transmitting apparatus comprises: a bit grouping (100), a phase rotation symbol mapper (110), an up-sampler (120), a transmission filter (130), a digital analog converter (140), and an orthogonal modulator (150). The bit grouping performs a k bit grouping to map an input bit string into a symbol having M level. The phase rotation symbol mapper is inputted with the k bit, and produces a complex symbol having a phase rotational characteristic. The up-sampler performs an up-sampling of the phase rotation encoded symbol. The transmission filter filters the up-sampled signal. The digital analog converter generates a radio transmission signal by converting a digital signal to an analog signal and passing through the orthogonal modulator. [Reference numerals] (100) Bit grouping; (110) Phase rotation symbol mapper; (120) Up-sampler; (130) Transmission filter; (140) Digital analog converter; (150) Orthogonal modulator
Abstract translation: 目的：提供一种相位旋转调制解调装置及其方法，以防止接收性能下降，并获得发射机的高电量。 构成：发射装置包括：位分组（100），相位旋转符号映射器（110），上采样器（120），发射滤波器（130），数字模拟转换器（140）和正交调制器 （150）。 比特分组执行k比特分组以将输入比特串映射成具有M级的符号。 相位旋转符号映射器输入k位，并产生具有相位旋转特性的复数符号。 上采样器执行相位旋转编码符号的上采样。 发送滤波器对上采样信号进行滤波。 数字模拟转换器通过将数字信号转换为模拟信号并通过正交调制器来产生无线电传输信号。 （附图标记）（100）位分组; （110）相位旋转符号映射器; （120）上采样器; （130）变速器过滤器; （140）数字模拟转换器; （150）正交调制器
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公开(公告)号：KR1020130068296A
公开(公告)日：2013-06-26
申请号：KR1020110135320
申请日：2011-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04W16/04 , H04W72/0406 , H04W72/1205
Abstract: PURPOSE: A carrier based interference control method in a heterogeneous environment is provided to receive interference information by requesting interference information to other node. CONSTITUTION: A first node transmits a message to a second node(S410). The message includes content requiring information for an interference situation in each group of PRB(Physical Resource Block) of the second node. The first node receives a response message corresponding to the message from the second node(S420). The first node is a capacitor node which increases capacity. The second node is a coverage node which extends coverage. [Reference numerals] (AA) Start; (BB) End; (S410) First node transmit a message including content requiring information for an interference situation in PRB or in each group of PRB to the second node; (S420) Receive a response to the message
Abstract translation: 目的：提供异构环境中基于载波的干扰控制方法，通过向其他节点请求干扰信息来接收干扰信息。 构成：第一节点将消息发送到第二节点（S410）。 该消息包括需要用于第二节点的每个PRB组（物理资源块）中的干扰情况的信息的内容。 第一节点从第二节点接收与消息对应的响应消息（S420）。 第一节点是增加容量的电容器节点。 第二个节点是扩展覆盖的覆盖节点。 （附图标记）（AA）开始; （BB）结束; （S410）第一节点向第二节点发送包括需要PRB或每组PRB中的干扰情况的信息的消息; （S420）接收到该消息的响应
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公开(公告)号：KR1020130068240A
公开(公告)日：2013-06-26
申请号：KR1020110135204
申请日：2011-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04W72/042 , H04L5/0069 , H04W88/10
Abstract: PURPOSE: A wireless resource assignment method is provided to additionally control an assignment rate according to a transmission power value and a distance with a macro bases station. CONSTITUTION: A femto base station selects a first rate according to a distance with a macro base station(S110). The femto base station selects a second rate according to the firs rate and a transmission power value(S120). The femto base station assigns wireless resources for a non-subscriber and a subscriber according to the second rate(S130). The femto base station includes a hybrid access mode. The first rate is proportional to the exponentiation of the distance. The first rate is in inverse proportion to the exponentiation of cell coverage. [Reference numerals] (AA) Start; (BB) End; (S110) Select first rate according to a distance with a macro base station; (S120) Select second rate according to a transmission power value and the first rate; (S130) Assign resources according to the second rate
Abstract translation: 目的：提供一种无线资源分配方法，用于根据与宏基站的发射功率值和距离附加地控制分配速率。 构成：毫微微基站根据与宏基站的距离选择第一速率（S110）。 毫微微基站根据第一速率和发送功率值选择第二速率（S120）。 毫微微基站根据第二速率为非用户和用户分配无线资源（S130）。 毫微微基站包括混合接入模式。 第一速率与距离的取幂成比例。 第一个速率与小区覆盖的乘积成反比。 （附图标记）（AA）开始; （BB）结束; （S110）根据与宏基站的距离选择第一速率; （S120）根据发送功率值和第一速率选择第二速率; （S130）根据第二速率分配资源
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公开(公告)号：KR1020130068015A
公开(公告)日：2013-06-25
申请号：KR1020110135122
申请日：2011-12-15
Applicant: 한국전자통신연구원
CPC classification number: H04W16/10 , H04W72/0406 , H04W72/06 , H04W88/08
Abstract: PURPOSE: A resource assignment device in a new generation wireless access network and a resource assignment method thereof are provided to effectively assign resources by considering interference between the cells in a wireless access network. CONSTITUTION: A terminal state information management unit(304) manages the state information of terminals. An integrated cell resource assignment priority determination unit(305) determines the resource assignment priority of the terminals based on the state information and the information of the terminals stored in the terminal state management unit. An integrated cell resource assignment unit(306) assigns the wireless resources managed by an integrated cell resource management to the terminals according to the priority determined in the integrated cell resource assignment priority determination unit. The integrated cell resource assignment unit converts the information of the integrated cell resource management unit. [Reference numerals] (301) Cell information management unit; (302) Integrated cell resource management unit; (303) Terminal information management unit; (304) Terminal state information management unit; (305) Integrated cell resource assignment priority determination unit; (306) Integrated cell resource assignment unit
Abstract translation: 目的：提供新一代无线接入网络中的资源分配设备及其资源分配方法，通过考虑无线接入网络中的小区之间的干扰来有效地分配资源。 构成：终端状态信息管理单元（304）管理终端的状态信息。 集成小区资源分配优先级确定单元（305）基于状态信息和存储在终端状态管理单元中的终端的信息来确定终端的资源分配优先级。 集成小区资源分配单元（306）根据在集成小区资源分配优先级确定单元中确定的优先级，将由集成小区资源管理管理的无线资源分配给终端。 集成小区资源分配单元转换集成小区资源管理单元的信息。 （附图标记）（301）小区信息管理单元; （302）集成小区资源管理单元; （303）终端信息管理单元; （304）终端状态信息管理单元; （305）集成小区资源分配优先级确定单元; （306）集成小区资源分配单元
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