수중 장거리 네트워크를 위한 시간 동기화 프로토콜 방법
    21.
    发明授权
    수중 장거리 네트워크를 위한 시간 동기화 프로토콜 방법 有权
    长期水下网络的时间同步协议

    公开(公告)号:KR101603098B1

    公开(公告)日:2016-03-15

    申请号:KR1020150107520

    申请日:2015-07-29

    Abstract: 본발명은해상통신을위한수중음향네트워크의정밀시간-경계시분할다중접근방법에관한것으로서, 해상에서통신네트워크를제어하는모선및 수중의클러스터헤더들간수중장거리통신을위한프로토콜방법에있어서, 상기모선과상기클러스터헤더간통신의시간동기화프로토콜은 (a) 상기모선이패킷트레인형태의비콘을브로드캐스트하는단계; (b) 상기클러스터헤더가상기비콘의연속한 N개의패킷을수신하여패킷수신시각을저장하는단계; (c) 매체접속제어타임스탬프를통해패킷송신시각과상기패킷수신시각을이용하여상기모선과상기클러스터헤더간초기전파지연시간을획득하는단계; (d) 상기수신한패킷의수신시각차이를이용하여초기클록스큐를추정하는단계; (e) 상기추정된초기클록스큐를이용하여상기수신된패킷의전파지연시간변화량을추정하는단계; (f) 상기저장된패킷수신시각, 추정된상기초기클록스큐및 상기전파지연시간변화량을이용하여재추정클록스큐및 재추정클록오프셋을도출하는단계; 및 (g) 도출된상기재추정클록스큐및 상기재추정클록오프셋을이용하여패킷수신시클러스터헤더의로컬클록타임을업데이트하는단계;를포함하는것을특징으로한다.

    Abstract translation: 本发明涉及用于海上通信的水下声学网络的精确时间边界时分多址接入方法。 控制海上通信网络的指挥船和水下集群头之间的长距离水下通信协议包括以下步骤:(a)由指挥船以分组列车的形式广播信标; (b)在信标的一行中接收N个数据包,并存储通过集群报头接收分组的时间; (c)通过使用媒体访问控制的时间戳使用分组发送的时间和分组接收的时间来获得指挥船和群集报头之间的初始传播延迟时间; (d)通过使用接收到的分组的接收时间的间隙来估计初始时钟偏差; (e)通过使用估计的初始时钟偏差来估计所接收分组的传播延迟的时间变化; (f)通过使用存储的分组接收时间,估计的初始时钟偏差和传播延迟的时间变化来计算重新估计的时钟偏移和重新估计的时钟偏移; 以及(g)通过使用计算出的重新估计的时钟偏差和重新估计的时钟偏移来在接收分组时更新簇头的本地时钟时间。

    2세대 모뎀용 EASO-TDMA 방식의 매체 접속 제어 방법
    22.
    发明授权
    2세대 모뎀용 EASO-TDMA 방식의 매체 접속 제어 방법 有权
    增强AD-HOC自组织时间分割多种访问类型媒体访问控制方法生成2调制解调器

    公开(公告)号:KR101473364B1

    公开(公告)日:2014-12-26

    申请号:KR1020140065212

    申请日:2014-05-29

    CPC classification number: H04B7/212 H04W40/04 H04W72/0446 H04W84/18

    Abstract: The present invention relates to an enhanced ad-hoc self-organizing time division multiple access (EASO-TDMA) type media access control method for a 2nd generation modem, comprising a first phase (FP) processing step including network entry, time slot scanning, neighboring ship (NS) checking, and path setting, and a normal phase (NP) processing step of transmitting a packet during an occupied time slot using a given path and receiving packets of neighboring ships during the other times. According to the present invention, since the number of time slots of a ship is set according to the number of transmission nodes by using a route table, and a time slot is allocated to communicate to a destination during one frame, a transmission delay time can be reduced and occurrence of an application timeout can be prevented, and thus, wireless communication with a land based station, as well as communication between marine neighboring ships, can be more stably performed.

    Abstract translation: 本发明涉及一种用于第二代调制解调器的增强型自组织自组织时分多址(EASO-TDMA)型媒体接入控制方法,包括:第一阶段(FP)处理步骤,包括网络入口,时隙扫描, 相邻船舶(NS)检查和路径设置以及在占用时隙期间使用给定路径发送分组并在其他时间接收相邻船只的分组的正常相位(NP)处理步骤。 根据本发明,由于通过使用路由表根据发送节点的数量来设置船舶的时隙数,并且在一帧期间分配时隙以与目的地通信,所以传输延迟时间可以 可以防止应用超时的发生,从而能够更稳定地进行与陆基站的无线通信以及海洋相邻船舶之间的通信。

    선박 애드 혹 네트워크(SANET)를 위한 네트워크 계층에서의 패킷 처리 방법
    23.
    发明授权
    선박 애드 혹 네트워크(SANET)를 위한 네트워크 계층에서의 패킷 처리 방법 有权
    船舶自组织网络网络层分组处理方法

    公开(公告)号:KR101469718B1

    公开(公告)日:2014-12-05

    申请号:KR1020130039900

    申请日:2013-04-11

    Abstract: 본발명에따른선박애드혹 네트워크(SANET)를위한네트워크계층에서의패킷처리방법은, 상위계층으로부터상위계층데이터를수신하는단계; 및라우트테이블을참조하여, 상기상위계층데이터에주소헤더를첨부하여네트워크패킷을구성하는단계를포함하고, 상기네트워크패킷을구성하는단계에서, 상기주소헤더를선박또는기지국의 MMSI(Maritime Mobile Service Identity) 번호를이용하여나타내는것을특징으로한다.

    수중 장거리 네트워크를 위한 시간분할 다중접속 매체접속제어 프로토콜의 시간 파라미터 결정방법
    24.
    发明授权
    수중 장거리 네트워크를 위한 시간분할 다중접속 매체접속제어 프로토콜의 시간 파라미터 결정방법 有权
    时间分段多时间访问控制的时间参数确定方法长期水下网络

    公开(公告)号:KR101371322B1

    公开(公告)日:2014-03-10

    申请号:KR1020130108942

    申请日:2013-09-11

    CPC classification number: H04J3/16 H04B7/212 H04J3/062 H04L69/324 H04W74/08

    Abstract: The present invention relates to a time parameter determining method of a time division multiple-access media access control protocol for a long range underwater network in which a command ship prevents the generation of reception collision between the command ship and cluster heads and performs effective two-way communication. For this, the command ship (CS) sets the time parameter according to the position of a different cluster head (CH) into an initial stage, a normal stage, and a final stage and controls the connection of the entire channel. The CH determines the time parameter of media access control protocol connected to the channel based on the time parameter provided from the CS. The time parameter determining method of the time division multiple-access media protocol comprises: a step of determining a beacon signal time offset of a CH j in a hop h and sub-hop k; and a step of determining a response signal transmission time offset of the CH j in the hop h and sub-hop k. [Reference numerals] (AA) Initial stage; (BB) Bus bar mac (MAC); (CC) Cluster head mac (MAC); (S210) Time parameter setting; (S220) Beacon signal transmission; (S230) Beacon signal transfer; (S240) Response signal transmission; (S250) Response signal transfer; (S260) Route setting; (S270) Route setting confirmation

    Abstract translation: 本发明涉及一种用于长距离水下网络的时分多址媒体接入控制协议的时间参数确定方法,其中指挥舰防止命令船和簇头之间的接收冲突的产生, 方式沟通。 为此,指令船(CS)根据不同簇头(CH)的位置将时间参数设置为初始阶段,正常阶段和最后阶段,并控制整个通道的连接。 CH根据从CS提供的时间参数确定连接到信道的媒体访问控制协议的时间参数。 时分多址媒体协议的时间参数确定方法包括:确定跳跃h和子跳k中CH j的信标信号时间偏移的步骤; 以及确定跳跃h和子跳k中的CH j的响应信号传输时间偏移的步骤。 (附图标记)(AA)初始阶段; (BB)巴士巴(MAC); (CC)群集头mac(MAC); (S210)时间参数设定; (S220)信标信号传输; (S230)信标信号传送; (S240)响应信号传输; (S250)响应信号传送; (S260)路由设置; (S270)路由设置确认

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