公开(公告)号：KR1019960018971A

公开(公告)日：1996-06-17

申请号：KR1019940031731

申请日：1994-11-29

Applicant: 한국전자통신연구원

Inventor： 강흠근 ,  임선배

IPC: G06F17/30

Abstract: 본 발명은 고유용도 시스템(High Availiability System)에서 컴퓨터에 장애가 발생하여 페일오버(failover)를 하게 되더라도 시스템에서 관리하는 데이타의 일관성을 유지할 수 있는 방법에 관한 것이다. 본 발명에서 모든 응용 프로세스는 상기 디스크 어레이에 저장된 데이타를 수정할 때마다 수정하기 전에 관련된 정보(수정되는 데이타의 위치, 작동 이전의 값, 작동 이후의 값)들을 로그(log)로 만들어 디스크 어레이에 저장하는 것을 특징으로 한다.

公开(公告)号：KR1020080052051A

公开(公告)日：2008-06-11

申请号：KR1020060124060

申请日：2006-12-07

Applicant: 한국전자통신연구원

Inventor： 박현서 ,  임선배 ,  강숙양 ,  배정숙 ,  김재호 ,  김경숙 ,  신경철

IPC: H04L12/28 ,  H04B7/26

CPC classification number: H04W8/26 ,  H04W36/0011 ,  H04W80/04

Abstract: A handover method in an IP-based radio network is provided to enable a terminal to receive an IP in an IP management area, and keep an IP address regardless of the movement of the terminal when there is a session performed by the terminal, thereby performing the handover of the terminal without changing the IP address of the terminal to prevent a delayed time and a data loss. A PSS(Portable Subscriber Station)(101) reports a radio access status to a RAS(Radio Access System)(102)(S401). The PSS requests a new RAS(105) to perform the handover of the terminal(S402). The new RAS determines whether to receive the terminal and transmits a handover response to a previous RAS(S403). The previous RAS sets a data path to the new RAS during handover and prevent a loss of data during the handover(S404). The previous RAS directs the PSS to perform handover(S405). The PSS performs a radio access connection with the new RAS(S406). The new RAS completes the radio access connection with the PSS(S407). The new RAS sets a radio data path to the PSS(S408). The new RAS notifies a radio access gateway(103) that the PSS is registered in itself(S409). The radio access gateway processes a registration request, releases the data path of the PSS through the previous RA, and sets the data path of the PSS through the new RAS(311,S411). Accordingly, an IP(Internet Protocol) bearer path to the PSS is completed.

Abstract translation: 提供了一种基于IP的无线网络中的切换方法，使得终端能够在IP管理区域中接收IP，并且在终端执行会话时不考虑终端的移动来保持IP地址，从而执行 终端的切换，而不改变终端的IP地址，以防止延迟时间和数据丢失。 PSS（便携式用户站）（101）向RAS（无线接入系统）（102）报告无线接入状态（S401）。 PSS请求新的RAS（105）执行终端的切换（S402）。 新的RAS确定是否接收终端并向先前的RAS发送切换响应（S403）。 先前的RAS在切换期间设置到新RAS的数据路径，并防止在切换期间丢失数据（S404）。 先前的RAS指示PSS执行切换（S405）。 PSS使用新的RAS执行无线接入连接（S406）。 新RAS完成与PSS的无线接入连接（S407）。 新的RAS设置到PSS的无线电数据路径（S408）。 新RAS向无线接入网关（103）通知PSS本身注册（S409）。 无线电接入网关处理注册请求，通过先前的RA释放PSS的数据路径，并通过新的RAS（311，S411）设置PSS的数据路径。 因此，完成了到PSS的IP（因特网协议）承载路径。

公开(公告)号：KR100538026B1

公开(公告)日：2005-12-20

申请号：KR1020030022924

申请日：2003-04-11

Applicant: 한국전자통신연구원

Inventor： 예충일 ,  박재준 ,  권동승 ,  임선배

IPC: H04B7/00

Abstract: 본 발명은 빔 형성 시스템에서의 셀 공통 정보 전송 방법에 관한 것이다.
빔 형성 시스템에서의 셀 공통 정보 전송 방법은 빔 형성 기능을 갖는 시스템에서 셀 전체를 대상으로 하는 공통 정보 채널을 전송하기 위해 특정 주파수를 별도로 할당하고, 나머지 주파수들로 사용자 트래픽을 송수신하도록 하며, 공통 정보 전송을 위해 모든 셀이 시간적으로 나누어 공유하는 프레임과 각 셀이 배타적으로 이용하는 트래픽 전송을 위한 프레임들을 이용한다.
이와 같이 하면 빔 형성 기능을 가지고 있는 시스템에서 공통 정보 채널을 효율적으로 지원할 수 있어 셀 용량을 증대시킬 수도 있다.

公开(公告)号：KR100470071B1

公开(公告)日：2005-02-05

申请号：KR1020020082872

申请日：2002-12-23

Applicant: 한국전자통신연구원

Inventor： 윤미영 ,  김영진 ,  임선배

IPC: H04L12/46

Abstract: PURPOSE: An AAA(Authentication, Authorization and Accounting) server system having an integrated information management function in an interworking system between wireless LANs is provided to present and manage information elements required for an interworking system between wireless LANs. CONSTITUTION: An AAA server(200) comprises an MIP(Mobile IP) server control part, an NASREQ(Network Access Server Requirements) server control part(202), an information management part(203), a charging control part(204), an authentication part(205), a key management part(206), an inter-network protocol conversion part(207), a diameter protocol processing part(208), an address management part(209), an operation and management part(210), a UDP(220), an SCTP(230), and an IP(240). The MIP server control part(201) executes an MIP user session management function related to a mobile IP and a handoff processing function. The NASREQ server control part(202) executes a wireless LAN session management function for wireless LAN access users. The information management part(203) executes a user information management function, a system configuration information management function, a user address information management function, and a billing information storage function. The charging control part(204) executes a wireless LAN charging collection function and an MIP charging collection function. The authentication part(205) processes a user authentication function. The key management part(206) creates a session key necessary for authentication, and covers SA(Security Association) management. The inter-network protocol conversion part(207) executes interworking with an existing radius system. The diameter protocol processing part(208) processes a diameter message, and executes routing. The address management part(209) executes a user IP address allocation/release function, an HA(Home Agent) address allocation/release function, etc. The operation and management part(210) covers an SNMP-associated MIB(Management Information Base) contents and message processing function.

Abstract translation: 目的：提供在无线LAN之间的互通系统中具有集成信息管理功能的AAA（认证，授权和计费）服务器系统，以呈现和管理无线LAN之间的互配系统所需的信息元素。 本发明的AAA服务器（200）包括MIP（移动IP）服务器控制部分，NASREQ（网络访问服务器要求）服务器控制部分（202），信息管理部分（203），充电控制部分（204） （205），密钥管理部（206），网络间协议转换部（207），直径协议处理部（208），地址管理部（209），操作管理部（210 ），UDP（220），SCTP（230）和IP（240）。 MIP服务器控制部（201）执行与移动IP有关的MIP用户会话管理功能和越区切换处理功能。 NASREQ服务器控制部分（202）执行用于无线LAN接入用户的无线LAN会话管理功能。 信息管理部分（203）执行用户信息管理功能，系统配置信息管理功能，用户地址信息管理功能和记帐信息存储功能。 充电控制部（204）执行无线LAN充电收集功能和MIP收费收集功能。 认证部分（205）处理用户认证功能。 密钥管理部分（206）创建验证所需的会话密钥，并且覆盖SA（安全关联）管理。 网络间协议转换部分（207）执行与现有的半径系统的互配。 直径协议处理部分（208）处理直径消息，并执行路由。 地址管理部分209执行用户IP地址分配/释放功能，HA（本地代理）地址分配/释放功能等。操作和管理部分（210）覆盖SNMP相关的MIB（管理信息库） 内容和消息处理功能。

公开(公告)号：KR1020040090736A

公开(公告)日：2004-10-27

申请号：KR1020030024664

申请日：2003-04-18

Applicant: 한국전자통신연구원

Inventor： 예충일 ,  이유로 ,  권동승 ,  임선배 ,  황승구

IPC: H04J11/00

CPC classification number: H04L27/2607 ,  H04L5/0007 ,  H04L5/0037 ,  H04L27/2678

Abstract: PURPOSE: A method for resource utilization using sub-carrier assignment including a variable cyclic prefix in an OFDM system is provided to improve the frame efficiency by increasing the length of the cyclic prefix of an OFDM symbol in comparison with information without fine granularity. CONSTITUTION: A transmission burst formation process is performed to compose a transmission burst by setting up length of cyclic prefix to for an OFDM symbol considering round trip delay or delay spread of user terminals. A data demodulation process is performed to sample and demodulate data after a predetermined period on the basis of a slot boundary when the transmission burst is transmitted to a base station.

Abstract translation: 目的：提供一种在OFDM系统中使用包括可变循环前缀的子载波分配的资源利用方法，以便与没有精细粒度的信息相比，通过增加OFDM符号的循环前缀的长度来提高帧效率。 构成：考虑到往返延迟或用户终端的延迟扩展，执行传输脉冲串形成处理以构成传输脉冲串，以便为OFDM符号设置循环前缀的长度。 执行数据解调处理，当传输突发被发送到基站时，在基于时隙边界的预定周期之后对数据进行采样和解调。

公开(公告)号：KR1020040056994A

公开(公告)日：2004-07-01

申请号：KR1020020083745

申请日：2002-12-24

Applicant: 한국전자통신연구원

Inventor： 최성구 ,  강창순 ,  오현서 ,  임선배

IPC: H04B7/26

CPC classification number: H04W36/08 ,  H04B7/26 ,  H04W36/18 ,  H04W36/30

Abstract: PURPOSE: A method for controlling a traffic service through a fast handoff in a high speed communication system is provided to improve the QoS(Quality of Service) of a traffic service by simplifying a handoff procedure in order to minimize the transmission delay or loss of data. CONSTITUTION: An AT(Access Terminal) receives a call signal from the presently connected AP(Access Point) and checks the strength of the received signal(S310,S311). If the strength of the received signal is below a preset level, the AT checks the strength of the signals received from other peripheral APs(S313). If an AP having the strongest signal strength is sensed, the AT judges and selects the AP as an AP to hand off(S314). The AT sends the information of the selected AP and its own IP information in order to request the presently connected AP to handle the handoff of the AT(S315). The presently connected AP transmits the handoff request message to a PAR(Packet Access Router)(S316). The PAR, after checking whether the selected AP has a radio resource for the handoff of the AT, requests the selected AP to allocate a channel(S317).

Abstract translation: 目的：提供一种通过快速切换在高速通信系统中控制业务业务的方法，通过简化切换过程来提高业务业务的QoS（服务质量），以便最小化数据传输延迟或丢失 。 构成：AT（接入终端）从当前连接的AP（接入点）接收呼叫信号，并检查接收信号的强度（S310，S311）。 如果接收信号的强度低于预设电平，则AT检查从其他外围AP接收到的信号的强度（S313）。 如果感测到具有最强信号强度的AP，则AT判断并选择AP作为AP切换（S314）。 AT发送所选AP的信息及其自己的IP信息，以请求当前连接的AP处理AT的切换（S315）。 当前连接的AP将切换请求消息发送到PAR（分组接入路由器）（S316）。 在检查所选AP是否具有用于AT的切换的无线电资源之后，PAR请求所选择的AP分配一个信道（S317）。

公开(公告)号：KR1020040026056A

公开(公告)日：2004-03-27

申请号：KR1020020056572

申请日：2002-09-17

Applicant: 한국전자통신연구원

Inventor： 문정모 ,  김영진 ,  임선배

IPC: H04L12/46

CPC classification number: H04W36/14 ,  H04L61/2592 ,  H04W36/0038 ,  H04W36/0055 ,  H04W84/12

Abstract: PURPOSE: A handoff method between DSs(Distribution Systems) in a wireless LAN is provided to transmit user information to a mobile AP by using an IAPP(Inter-Access Point Protocol) and a message of a mobile IP, thereby preventing a new authentication procedure and minimizing user data loss. CONSTITUTION: A mobile station performs a re-association process(301). A new AP transmits an access request message to a local RADIUS server(LR1)(302). The local RADIUS server(LR1) returns an access accept message to an AP(303). The AP performs a TCP connection setup with a received FA(Foreign Agent)(304). The new AP transmits a send-security-block packet(307), receives an acknowledgement-security-block packet(308), and transmits a move-notify message to the FA(309). A wideband RADIUS server returns an IP address and security information as an access accept message(311). The FA transmits a binding update message(312). If security relation information does not exist, the FA transmits an access request message(313), receives an access response message from the wideband RADIUS server(314), and transmits an access request message to the local RADIUS server(LR1)(315). The local RADIUS server(LR1) returns an access response message(316). If a TCP connection setup is not performed, a TCP connection setup is carried out between a previous AP and a previous FA(317). The previous FA transmits a send-security-block packet(320), and transmits a move-notify message to the previous AP(322). The new AP returns a re-association response message to the mobile station(326). A packet is transmitted to the new FA(329), and is reversely capsulated(330). The new FA reversely capsulates the received packet, and transmits the packet to the new AP(332).

Abstract translation: 目的：提供无线LAN中的DS（分发系统）之间的切换方法，通过使用IAPP（接入点间​​协议）和移动IP的消息将移动AP发送用户信息，从而防止新的认证过程 并最大限度地减少用户数据丢失。 构成：移动台执行重新关联处理（301）。 新的AP向本地RADIUS服务器（LR1）发送访问请求消息（302）。 本地RADIUS服务器（LR1）向AP返回访问接受消息（303）。 AP利用接收到的FA（Foreign Agent）（304）进行TCP连接建立。 新AP发送发送安全块分组（307），接收确认安全块分组（308），并向FA发送移动通知消息（309）。 宽带RADIUS服务器作为访问接受消息返回IP地址和安全信息（311）。 FA发送绑定更新消息（312）。 如果不存在安全关系信息，FA发送接入请求消息（313），从宽带RADIUS服务器（314）接收接入响应消息，并向本地RADIUS服务器（LR1）发送接入请求消息（315） 。 本地RADIUS服务器（LR1）返回访问响​​应消息（316）。 如果没有执行TCP连接设置，则在先前的AP和之前的FA（317）之间执行TCP连接建立。 先前的FA发送发送安全块分组（320），并向前一AP发送移动通知消息（322）。 新的AP向移动台返回重新关联响应消息（326）。 分组被发送到新的FA（329），并且被反向封装（330）。 新的FA反向封装接收的分组，并将分组发送到新的AP（332）。

公开(公告)号：KR1020030023938A

公开(公告)日：2003-03-26

申请号：KR1020010056703

申请日：2001-09-14

Applicant: 한국전자통신연구원

Inventor： 최상호 ,  김경식 ,  임선배

IPC: H04B7/26

CPC classification number: H04W36/12

Abstract: PURPOSE: A method for performing an inter-PDSN(Packet Data Serving Node) high-speed hard hand-off through a link setup between BSCs(Base Station Controllers) through an MSC(Mobile Switching Center) is provided to perform a communication through the link setup between the BSCs through the MSC in an active packet session mode in an IMT-2000(International Mobile Telecommunications-2000) wireless packet mobile communication network and offer a packet data service in a high speed without losing data. CONSTITUTION: An MSC(111) selects a T(Target)-BSC(107) having an available wireless channel from a cell list, inserts a PANID(Previous Access Network ID) and a hard hand-off indicator into a hand-off request message, and transmits the hand-off request message to the T-BSC(107)(S203). The T-BSC(107) receives the hand-off request message, assigns a suitable idle wireless resource, and sets an ATM(Asynchronous Transfer Mode)-based link channel between an S(Source)-BSC(103) and the T-BSC(107) through the MSC(111)(S205). The T-BSC(107) transmits a hand-off request acknowledgement message including wireless channel information to the MS(111) so that an MS(101) performs a tuning to the corresponding wireless channel and starts a T9 timer to wait for receiving a signal transmitted from the MS(101)(S207). The MSC(111) receives the hand-off request acknowledgement message, prepares the switching of a call from the S-BSC(105) to the T-BSC(107), and transmits a hand-off command including wireless channel information received from the T-BSC(107) to the S-BSC(103)(S209). The S-BSC(103) transmits a GHDM(General Hand-off Direction Message) or a UHDM(Universal Hand-off Direction Message) to the MS(101), and starts a Twaitho timer for admitting that the MS(101) is returned to the S-BSC(103)(S211). The MS(101) transmits an MS acknowledgement order message to the S-BSC(103)(S213). The S-BSC(103) transmits a hand-off commenced message to the MSC(111) for informing that the MS(101) is instructed to be moved to a channel of the T-BSC(107)(S215). If the MS(101) acquires synchronization using a reverse traffic channel frame or preamble data and completes a hard hand-off procedure, the MS(101) transmits a hand-off completion message to the T-BSC(107)(S217). The T-BSC(107) receives the hand-off completion message and transmits a BSC acknowledgement order message to the MS(S219).

Abstract translation: 目的：提供通过MSC（移动交换中心）通过BSC（基站控制器）之间的链路建立来执行跨PDSN（分组数据服务节点）高速硬切换的方法，以通过 在IMT-2000（国际移动电信-2000）无线分组移动通信网络中以活动分组会话模式通过MSC在BSC之间建立链路建立，并且高速提供分组数据业务而不丢失数据。 构成：MSC（111）从小区列表中选择具有可用无线信道的T（目标）-BSC（107），将PANID（先前接入网络ID）和硬越区切换指示符插入越区切换请求 消息，并将切换请求消息发送给T-BSC（107）（S203）。 T-BSC（107）接收到切换请求消息，分配合适的空闲无线资源，并在S（源）-BSC（103）与T-网络（103）之间设置基于ATM（异步传输模式）的链路信道， BSC（107）通过MSC（111）（S205）。 T-BSC（107）向MS（111）发送包括无线信道信息的切换请求确认消息，使得MS（101）对相应的无线信道执行调谐，并启动T9定时器以等待接收 MS（101）发送的信号（S207）。 MSC（111）接收切换请求确认消息，准备从S-BSC（105）到T-BSC（107）的呼叫切换，并发送包括从 T-BSC（107）到S-BSC（103）（S209）。 S-BSC（103）向MS（101）发送GHDM（通用切换指示消息）或UHDM（通用切换指示消息），并且启动Twaitho定时器，以允许MS（101） 返回到S-BSC（103）（S211）。 MS（101）向S-BSC（103）发送MS确认命令消息（S213）。 S-BSC（103）向MSC（111）发送切换开始的消息，用于通知MS（101）被指示移动到T-BSC（107）的信道（S215）。 如果MS（101）使用反向业务信道帧或前导码数据获取同步，并且完成硬切换过程，则MS（101）向T-BSC（107）发送切换完成消息（S217）。 T-BSC（107）接收到切换完成消息，并向MS发送BSC确认命令消息（S219）。

公开(公告)号：KR1020010056283A

公开(公告)日：2001-07-04

申请号：KR1019990057673

申请日：1999-12-14

Applicant: 한국전자통신연구원

Inventor： 박규태 ,  정광렬 ,  송평중 ,  임선배

IPC: H04B7/26

CPC classification number: H04W36/14 ,  H04B1/707 ,  H04B2201/70701 ,  H04W36/0072

Abstract: PURPOSE: A method for a hard handoff to a synchronous CDMA system from an asynchronous CDMA system is provided to execute a handoff at an appointed time after receiving all necessary information to set up a traffic channel with a synchronous CDMA(second generation IS95) base station in the state that the connection with an asynchronous CDMA(third generation 3GPP DS) base station has not released. CONSTITUTION: Based on a received signal strength indicator and base station discriminating information reported from a mobile terminal, a third generation 3GPP DS base station judges that a handoff to a second generation IS95 base station is required. If the 3rd generation 3GPP DA base station informs a mobile switching center that the handoff to the 2nd generation IS95 base station is required(Handoff Required), the mobile switching center sends a handoff request message to inform the 2nd generation IS95 base station that the handoff is required(Handoff Request). The 2nd generation IS95 base station transfers information, necessary for the mobile terminal to execute the hard handoff to the 2nd generation IS95 base station, to the generation 3GPP DA base station(Handoff Request ACK, Handoff Command). The generation 3GPP DA base station transfers information delivered from the 2nd generation IS95 base station to the mobile terminal through a preset signaling channel(Inter-System Handoff Command). If the mobile station receives the inter-system handoff command message normally and informs the 3rd generation 3GPP DA base station of the fact(L2:Data Ack), the 3rd generation 3GPP DA base station sends a handoff execution message to the mobile switching center(Handoff Commenced).

Abstract translation: 目的：提供一种用于从异步CDMA系统到同步CDMA系统的硬切换的方法，用于在接收到与同步CDMA（第二代IS95）基站建立业务信道的所有必要信息之后的指定时间执行切换 在与异步CDMA（第三代3GPP DS）基站的连接尚未释放的状态下。 构成：基于从移动终端报告的接收信号强度指示符和基站识别信息，第三代3GPP DS基站判断需要切换到第二代IS95基站。 如果第三代3GPP DA基站通知移动交换中心需要到第二代IS95基站的切换（需要切换），则移动交换中心发送切换请求消息，以通知第二代IS95基站切换 需要（切换请求）。 第二代IS95基站将移动终端执行第二代IS95基站的硬切换所需的信息传送到生成3GPP DA基站（切换请求ACK，切换命令）。 一代3GPP DA基站通过预设的信令信道（系统间切换命令）将从第二代I​​S95基站传送的信息传送到移动终端。 如果移动台正常接收到系统间切换命令消息，并向第三代3GPP DA基站通知事实（L2：Data Ack），则第三代3GPP DA基站向移动交换中心发送切换执行消息（ 切换开始）。

公开(公告)号：KR1020010009725A

公开(公告)日：2001-02-05

申请号：KR1019990028260

申请日：1999-07-13

Applicant: 한국전자통신연구원

Inventor： 박정현 ,  김영진 ,  임선배 ,  이승규 ,  김현곤 ,  신재승

IPC: H04L9/00

CPC classification number: H04L9/0625 ,  H04W12/02 ,  H04W12/06

Abstract: PURPOSE: A data encoding method is provided to encode data efficiently in view of stability such as a data security and a subscriber authentication, to carry out a high speed of operation, and to allow to apply in a radio communication environment. CONSTITUTION: In a data encoding method of a radio communication environment, messages are input, and the messages are divided into two and the divided messages are input to a left block and a right block respectively. A bit stream input to the right block is input to an F function and the left block of the next round. After a bit exclusive OR operation of the bit stream in which the F function is input to the bit stream of the right block and the bit stream input to the left block is carried out, the result values are input to the right block of the next round. After the above operations are carried out repeatedly by a described times, the result values are transposed and the finally encoded stream is output.

Abstract translation: 目的：提供一种数据编码方法，以便从诸如数据安全性和用户认证的稳定性的角度有效地编码数据，以执行高速操作，并允许在无线电通信环境中应用。 构成：在无线电通信环境的数据编码方法中，输入消息，并将消息分成两部分，分割的消息分别输入到左块和右块。 输入到右块的比特流被输入到F函数和下一轮的左块。 在将F功能输入到右块的比特流并输入到左块的比特流的比特流进行了异或运算之后，将结果值输入到下一个块的右侧块 回合。 在通过描述的时间重复执行上述操作之后，转换结果值并输出最终编码的流。