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公开(公告)号：KR1020060117205A
公开(公告)日：2006-11-16
申请号：KR1020060041227
申请日：2006-05-08
Applicant: 삼성전자주식회사 , 유니버시티 오브 매릴랜드 칼리지 팍
Inventor： 이인선 , 윤상보 , 알바우,윌리엄알버트 , 클랜시,티.찰레스 , 신민호
CPC classification number: H04W12/06 , H04L63/0464 , H04L63/0892 , H04L63/162 , H04W12/04 , H04W84/047 , H04L9/32 , H04W28/08 , H04W84/18
Abstract: An authentication method of a wireless distributed system is provided to process an authentication step for a terminal without a central management device such as an AAA server by distributing an authentication management to base stations. An authentication method of a wireless distributed system including at least one base station providing a terminal with a connection service includes the steps of: receiving an authentication request from the terminal in an unregistered base station which performs an authentication; multicasting an identity request to the wireless distributed system for checking the terminal; receiving an identity response from the at least one base station as a reply of the identity request; and authenticating the terminal on the basis of the received identity response.
Abstract translation: 提供了一种无线分布式系统的认证方法，用于通过向基站分发认证管理来处理没有中央管理装置（例如AAA服务器）的终端的认证步骤。 包括向终端提供连接服务的至少一个基站的无线分布式系统的认证方法包括以下步骤：从执行认证的未注册基站中的终端接收认证请求; 向无线分布式系统多播身份请求以检查终端; 从所述至少一个基站接收身份响应作为所述身份请求的回复; 并基于所接收的身份响应来认证终端。
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公开(公告)号：KR1020050044963A
公开(公告)日：2005-05-16
申请号：KR1020030078869
申请日：2003-11-08
IPC: G06F11/10
CPC classification number: H03M13/1168 , H03M13/033 , H03M13/116 , H03M13/1177 , H03M13/6516 , H03M13/6561
Abstract: 본 발명은디지털 통신 시스템에서 사용되는 저밀도 패러티 검사 부호를 구현 하는데 있어 부호화 복잡도를 현저히 감소시킬 수 있는 부호화 방법에 관한 것으로 본 발명에 따른 부호화 방법에서는 다수의 순환 행렬을 원소로 하여 구성되는 패러티 검사 행렬 H를 생성하고, 상기 패러티 검사 행렬을 이용하여 생성 행렬 G를 구성하여, 상기 정보 비트에 상기 생성 행렬 G을 적용함으로써 상기 정보 비트를 부호화 한다.
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公开(公告)号：KR1020040071113A
公开(公告)日：2004-08-11
申请号：KR1020040058944
申请日：2004-07-27
Applicant: 삼성전자주식회사 , 유니버시티 오브 매릴랜드 칼리지 팍
IPC: H04B7/26
CPC classification number: H04W36/0055 , H04W12/06 , H04W36/0016 , H04W36/0033 , H04W36/0038 , H04W36/08 , H04W40/00 , H04W48/16 , H04W48/20 , H04W84/045 , H04W84/12 , H04W84/18 , H04W88/08 , H04W92/20
Abstract: PURPOSE: A proactive caching method in a wireless network and an apparatus thereof are provided to propagate context information of a terminal for supporting handoff to adjacent APs(Access Points) of the terminal. CONSTITUTION: A mobile terminal transmits a message requesting re-association to an AP_A(501). The AP_A transmits a re-association response message by a temporarily stored context to the mobile terminal(503). The AP_A transfers the temporarily stored context to an AP_B(505). When handoff to the AP_B is requested, the mobile terminal transmits a re-association request message to the AP_B(507). The AP_B transmits a re-association response message to the mobile terminal by the checked context(509).
Abstract translation: 目的：提供无线网络中的主动缓存方法及其装置，用于传播终端的上下文信息，用于支持切换到终端的相邻AP（接入点）。 构成：移动终端向AP_A发送请求重新关联的消息（501）。 AP_A通过临时存储的上下文向移动终端（503）发送重新关联响应消息。 AP_A将临时存储的上下文传送到AP_B（505）。 当请求切换到AP_B时，移动终端向AP_B发送重新关联请求消息（507）。 AP_B通过所检查的上下文（509）向移动终端发送重新关联响应消息。
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公开(公告)号：KR1020040041509A
公开(公告)日：2004-05-17
申请号：KR1020030078868
申请日：2003-11-08
Applicant: 삼성전자주식회사 , 유니버시티 오브 매릴랜드 칼리지 팍
IPC: H04B7/26
CPC classification number: H04W36/0055 , H04W12/06 , H04W36/0016 , H04W36/0033 , H04W36/0038 , H04W36/08 , H04W40/00 , H04W48/16 , H04W48/20 , H04W84/045 , H04W84/12 , H04W84/18 , H04W88/08 , H04W92/20
Abstract: PURPOSE: A handoff method is provided to achieve improved service quality and allow for a high speed roaming service by reducing handoff processes and delay of reassociation. CONSTITUTION: A handoff method comprises a step of creating a neighbor graph by neighbor access points which allow for a handoff; a step of receiving the context for a predetermined mobile terminal propagated from the neighbor access point by the neighbor graph; and a step of re-gaining access to the predetermined mobile terminal which has moved from the neighbor access point by using the received context, and propagating the context to the neighbor access points with reference to the neighbor graph.
Abstract translation: 目的：提供切换方法以实现改进的服务质量，并通过减少切换过程和重新关联的延迟来允许高速漫游服务。 构成：切换方法包括通过允许切换的邻居接入点创建邻居图的步骤; 接收由相邻图从邻居接入点传播的预定移动终端的上下文的步骤; 以及通过使用接收到的上下文重新获得对从邻居接入点移动的预定移动终端的访问的步骤，并且参照邻居图将上下文传播到邻居接入点。
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公开(公告)号：KR101109603B1
公开(公告)日：2012-01-31
申请号：KR1020070031140
申请日：2007-03-29
Applicant: 삼성전자주식회사
IPC: H04N21/43
CPC classification number: H04N5/44543 , H04N5/4401 , H04N21/4331 , H04N21/435 , H04N21/443 , H04N21/8166
Abstract: An application program executing a method and an apparatus for improving the speed of executing an application program for a digital television (DTV) are provided. If log information exists for a resource used by an application program, the resource indicated by the log information is requested, and the application program is executed using the resource transmitted as per the request. Accordingly, it is possible to rapidly provide the application program with the resource used by the application program, thereby increasing the speed of executing the application program.
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Patent Agency Ranking
公开(公告)号：KR1020090020186A
公开(公告)日：2009-02-26
申请号：KR1020070084725
申请日：2007-08-23
Applicant: 삼성전자주식회사
CPC classification number: H04L1/0045 , H04L1/0067 , H04L1/0071
Abstract: An apparatus and a method for rate dematching in communication system are provided to reduce the delay time to start data rate flow by completing the deinterleaving. The current data inputted in the deinterleaved order, the arrival sequence generator calculates the number of order of data. The error calculator calculates the error by using the arrival sequence and previous error. Hole/repetition decision devices(801,805) determine the kind of current data by using the result previously determined with the error. An output unit processes the current data according to the kinds of data and outputs the result.
Abstract translation: 提供通信系统中的速率分配的装置和方法，以通过完成解交织来减少启动数据速率流的延迟时间。 以解交织的顺序输入的当前数据，到达序列生成器计算数据的次数。 错误计算器通过使用到达序列和以前的错误计算错误。 孔/重复判定装置（801,805）通过使用先前用误差确定的结果来确定当前数据的种类。 输出单元根据数据种类处理当前数据并输出结果。
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公开(公告)号：KR1020080067513A
公开(公告)日：2008-07-21
申请号：KR1020070004901
申请日：2007-01-16
Applicant: 삼성전자주식회사
IPC: H04L7/027
CPC classification number: H04L7/027 , H04L27/2692
Abstract: An apparatus and a method for detecting an initial synchronization in a mobile communication system using an orthogonal frequency division multiplexing access are provided to improve an initial synchronization detection performance by performing an initial synchronization detection using a simultaneous detection scheme of a power level comparison value and an auto correlation value. An apparatus for detecting an initial synchronization in a mobile communication system using an orthogonal frequency division multiplexing access includes an auto correlator(510), an initial power controller(540), and a synchronization detection unit(520). The auto correlator calculates and outputs an auto correlation value based on a repeat characteristic of a preamble in an input signal. The initial power controller is simultaneously operated with the auto correlator, and controls to output a power level value which is proper for an initial synchronization detection. The synchronization determining unit detects an initial synchronization by performing a multiplying the auto correlation value by a ratio of the power level value at previous period and the power level value at a current period.
Abstract translation: 提供了一种使用正交频分多路复用接入检测移动通信系统中的初始同步的装置和方法，以通过使用功率电平比较值的同时检测方案执行初始同步检测来提高初始同步检测性能， 自动相关值。 一种使用正交频分复用接入的移动通信系统中的初始同步检测装置包括自动相关器（510），初始功率控制器（540）和同步检测单元（520）。 自相关器基于输入信号中的前导码的重复特性来计算并输出自相关值。 初始功率控制器与自动相关器同时工作，并控制输出适用于初始同步检测的功率电平值。 同步确定单元通过执行将自相关值乘以前一时段的功率电平值与当前周期的功率电平值的比率来检测初始同步。
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公开(公告)号：KR100744312B1
公开(公告)日：2007-07-30
申请号：KR1020060117964
申请日：2006-11-27
Applicant: 삼성전자주식회사 , 유니버시티 오브 매릴랜드 칼리지 팍
CPC classification number: H04W12/04 , H04L9/0836 , H04L9/0844 , H04L63/062 , H04L63/0823 , H04L2209/80 , H04L2463/061 , H04W12/06 , H04W84/12 , H04W88/08
Abstract: A roaming service method for a fast and secure wireless network is provided. In an embodiment of the present invention, an AP, which an STA associates with, transmits security keys needed for roaming to neighbor APs of the AP. When the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided security key. In another embodiment of the present invention, an authentication server transmits security keys needed for roaming to neighbor APs to which the STA is likely to move, so that when the STA moves to one of the neighbor APs, a reassociation is carried out between the STA and the neighbor AP using the already provided security key.
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公开(公告)号：KR1020060126890A
公开(公告)日：2006-12-11
申请号：KR1020060117966
申请日：2006-11-27
Applicant: 삼성전자주식회사 , 유니버시티 오브 매릴랜드 칼리지 팍
CPC classification number: H04W12/04 , H04L9/0836 , H04L9/0844 , H04L63/062 , H04L63/0823 , H04L2209/80 , H04L2463/061 , H04W12/06 , H04W84/12 , H04W88/08
Abstract: A method for performing a fast roaming service in a wireless network is provided to reduce a time for a roaming process by simplifying procedure for the roaming process in the wireless network. A server receives association information of a mobile terminal from a first access point of a plurality of access points(901). The server transmits the association information of the first access point and the mobile terminal to at least one adjacent access point(909). The server transmits a security key obtained from the association information to at least one adjacent access point when the security key corresponding to the mobile terminal is requested by at least one adjacent access point(913,915). The one adjacent access point is adjacent to the first access point. An authentication process is performed by using the security key when the mobile terminal tries to roam at least one adjacent access point.
Abstract translation: 提供了一种用于在无线网络中执行快速漫游服务的方法，以通过简化无线网络中的漫游过程的过程来减少漫游过程的时间。 服务器从多个接入点（901）的第一接入点接收移动终端的关联信息。 服务器将第一接入点和移动终端的关联信息发送到至少一个相邻接入点（909）。 当由至少一个相邻接入点（913,915）请求与移动终端对应的安全密钥时，服务器将从关联信息获得的安全密钥发送到至少一个相邻接入点。 一个相邻的接入点与第一接入点相邻。 当移动终端试图漫游至少一个相邻的接入点时，通过使用安全密钥来执行认证过程。
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公开(公告)号：KR1020060126889A
公开(公告)日：2006-12-11
申请号：KR1020060117964
申请日：2006-11-27
Applicant: 삼성전자주식회사 , 유니버시티 오브 매릴랜드 칼리지 팍
CPC classification number: H04W12/04 , H04L9/0836 , H04L9/0844 , H04L63/062 , H04L63/0823 , H04L2209/80 , H04L2463/061 , H04W12/06 , H04W84/12 , H04W88/08
Abstract: A method for performing a fast roaming service in a wireless network is provided to reduce a roaming time by simplifying a roaming process. A first level security key shared between a mobile terminal and a contact point is derived from a predetermined master key when the mobile terminal tries to associate a plurality of access points as one access point. A second level security key shared between the mobile terminal and at least one adjacent contact point is derived from the first level security key. The second level security key is provided in at least one adjacent access point. The adjacent access point is adjacent to the associated access point. A pre-authentication process for the mobile terminal is performed at the adjacent access point by the second level security key when the mobile terminal tries to roam at least one adjacent access point.
Abstract translation: 提供了一种用于在无线网络中执行快速漫游服务的方法，以通过简化漫游过程来减少漫游时间。 当移动终端尝试将多个接入点关联为一个接入点时，从预定的主密钥导出在移动终端和联系点之间共享的第一级安全密钥。 从第一级安全密钥导出在移动终端与至少一个相邻接触点之间共享的第二级安全密钥。 第二级安全密钥被提供在至少一个相邻的接入点中。 相邻接入点与相关接入点相邻。 当移动终端试图漫游至少一个相邻接入点时，通过第二级安全密钥在相邻接入点执行用于移动终端的预认证过程。
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