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    • 46. 发明公开
    • 광 버스트 교환시스템에서의 버스트 스케쥴링 방법
    • 光束开关系统中的脉冲调度方法
    • KR1020080100541A
    • 2008-11-19
    • KR1020070046367
    • 2007-05-14
    • 한국정보통신대학교 산학협력단
    • 이성영박홍식이용석
    • H04L12/851H04J14/08H04L12/70H04B10/25
    • H04L47/10H04L47/245
    • A burst scheduling method in an optical burst switching system is provided to improve the whole system throughput by applying a retransmission method to an SHG burst. A burst scheduling method in an optical burst switching system in which a plurality of nodes are arranged in a net type of a mesh shape comprises the following steps of: determining whether a burst which is inputted by using a burst control packet transmitted from a previous node is a TDB(Transit Data Burst) or an SHG(Several Hop Going) burst(S200); re-assigning a corresponding output channel so that a corresponding burst can be occupied, if an output channel, which is used when the inputted burst is the TDB burst, is already occupied by a specific SHG burst(S500); and losing a corresponding burst, if which is used when the inputted burst is the SHG burst, is already occupied by a different burst(S700).
    • 提供了一种在光突发交换系统中的突发调度方法,通过将重传方法应用于SHG突发来提高整个系统吞吐量。 在其中以网络形式布置多个节点的光突发交换系统中的突发调度方法包括以下步骤:确定通过使用从先前节点发送的突发控制分组输入的脉冲串 是TDB(传输数据突发)或SHG(多跳)突发(S200); 如果在输入的突发是TDB突发时使用的输出信道已被特定的SHG突发占据(S500),则重新分配对应的输出信道,使得可以占用相应的突发。 并且当输入的突发是SHG突发时使用的丢失相应突发已被不同的突发占据(S700)。
    • 48. 发明授权
    • VoIP용 무선랜에 있어서 통신품질을 보장하는 매체접속 제어 장치
    • VoIP无线局域网媒体接入控制装置
    • KR100608914B1
    • 2006-08-09
    • KR1020040092093
    • 2004-11-11
    • 한국전자통신연구원
    • 박찬원김정식
    • H04L29/10H04L29/06
    • H04L29/06027H04L47/10H04L47/14H04L47/2416H04L47/245H04L47/32H04L65/80H04L67/322H04L69/16H04W28/14H04W72/1242H04W74/0875H04W84/12
    • 본 발명은 VoIP 서비스용 휴대단말기에 적합하도록, VoIP 용 무선랜 환경에서 최소한의 자원으로 음성데이터와 비음성 데이터에 대한 우선순위를 이용하여 서비스 품질(Quality Of Service, 이하 QoS)을 보장하며, 무선랜 규격의 데이터를 송신하기 위한 매체 접속 제어 장치에 관한 것으로서, 그 구성은, 응용프로그램에서 발생된 송신데이타를 우선순위에 따라 모뎀으로 제공하는 VoIP용 무선랜에서 통신품질을 보장하는 매체 접속 제어 장치에 있어서, 상기 응용프로그램으로부터 전달된 송신데이타가 음성데이타인지 비음성데이타인지를 구분하는 커널부; 무선랜의 데이터 서비스 관리 기능을 수행하면서, 상기 커널부에서 전달된 송신데이타를 음성 데이터와 비음성 데이터로 구분하여 두개의 큐에 각각 저장하고, MAC 데이터 헤더를 MAC 송신부로 전송한 후, 수신되는 송신인터럽트 종류에 따라서 저장된 음성데이터 또는 비음성데이터를 MAC 송신부로 전달하는 MAC 드라이버부; 및 상기 MAC 헤더의 전달을 통해 송신데이타가 발생되었음을 인식하고, 각각의 음성데이터와 비음성 데이터에 대해 MAC 프로토콜을 독립적으로 수행하여 매체 접속 기회를 먼저 얻는 데이터에 대해 상기 MAC 드라이버부에 송신인터럽트를 전송하고, 그 결과 전달된 음성데이타 혹은 비음성 데이터를 해당 헤더와 결합시켜 모뎀으로 출력하는 MAC 송신부를 포함한다.
      VoIP, 무선랜, MAC, QoS, IEEE802.11, IEEE802.11e
    • 49. 发明公开
    • 패킷 제어 시스템 및 통신 방법
    • 分组通信控制器
    • KR1020030019093A
    • 2003-03-06
    • KR1020020049811
    • 2002-08-22
    • 가부시키가이샤후지쿠라
    • 오니시히로야
    • H04L12/851
    • H04L47/10H04L47/245
    • PURPOSE: To provide a packet communication device which immediately transmits urgent information even in the middle of communication without reducing the data transfer efficiency. CONSTITUTION: The packet communication device is provided with packet making parts 8 and 9 which convert signals transmitted from signal processing parts 2 and 7 to packets of a prescribed form, a high priority packet thrusting means 10 which thrusts a packet from the packet making part (high priority) 9 at the time of input of this packet even in the middle of transmission of a packet from the packet making part (low priority) 8, a transmission circuit 3 which transmits the packet outputted from the high priority packet thrusting means 10 to a communication medium 4 for transmission, a reception circuit 6 which receives a data string from a communication medium 5 for reception, and a multiplexer 13 which is connected to the reception circuit 6 and classifies the reception data string into low priority packets and high priority packets to transmit them to signal processing parts 8 and 9.
    • 目的:提供即使在通信中间也可以立即发送紧急信息的分组通信设备,而不降低数据传输效率。 构成:分组通信装置设置有将信号处理部分2和7发送的信号转换成规定形式的分组的分组产生部分8和9,高优先级分组推送装置10从分组产生部分推送分组( 高优先级)9,即使在从分组产生部分(低优先级)8发送分组的中间,输入该分组8时,发送电路3将从高优先级分组推送装置10输出的分组发送到 用于传输的通信介质4,从用于接收的通信介质5接收数据串的接收电路6和连接到接收电路6的多路复用器13,并将接收数据串分为低优先级分组和高优先级分组 以将它们发送到信号处理部分8和9。
    • 50. 发明公开
    • 차등화 서비스 보장을 위한 경계 라우터의 보장 방법
    • 用于保证差异化服务的边界路由器确认方法
    • KR1020020056112A
    • 2002-07-10
    • KR1020000085417
    • 2000-12-29
    • 한국전자통신연구원김병기
    • 석주명이종협이형호김병기이문호김창욱한정안이환규김우주
    • H04L12/24
    • H04L41/5003H04L47/2408H04L47/245
    • PURPOSE: A boundary router assuring method for assuring a differentiated service is provided to reflect a service quality to the full requested by a far-end regardless of a traffic processing provided from each transmission network by using a per hop behavior class buffer using a traffic control unit of a boundary router. CONSTITUTION: A boundary router classifies a class for a packet inputted through a traffic control unit(S301) and checks the type of the classified class(S302). If the classified class is EF, the boundary router checks whether there is a space in an EF buffer(S303). If there is a space in the EF buffer, the boundary router assigns the classified class to the EF buffer, and if the EF buffer is full, the boundary router checks whether there is a space in a DE buffer(S306). If there is a space in the DE buffer, the boundary router assigns a portion of the DE buffer to an EF class with a high priority(S307,S308), and transmits an EF packet(S309). If the DE buffer is full, the boundary router checks whether there is a space in an AF buffer(S311). If the AF buffer is full, the boundary router discards the packet(S312). If there is a space in the AF buffer, the boundary router assigns a portion of the AF buffer to the EF class(S313,S314), and transmits the EF packet(S315). If the classified class is AF, the boundary router checks whether there is a space in the AF buffer(S317). If there is a space in the AF buffer, the boundary router assigns the AF packet(S318), and if there is no space in the AF buffer, the boundary router checks whether there is a space in the DE buffer(S319). If the DE buffer is full, the boundary router discards the corresponding packet(S320). If there is a space in the DE buffer, the boundary router assigns a portion of the DE buffer to the AF class(S322,S323), and transmits the EF packet(S333).
    • 目的:提供用于确保差分服务的边界路由器保证方法,以将服务质量反映到远端所要求的完整性,而不管通过使用流量控制使用每跳行为类别缓冲器,从每个传输网络提供的流量处理 边界路由器的单位。 构成:边界路由器对通过流量控制单元输入的分组进行分类(S301),并检查分类的类型(S302)。 如果分类是EF,则边界路由器检查EF缓冲区中是否有空格(S303)。 如果EF缓冲区中有空格,边界路由器将分类的类分配给EF缓冲区,如果EF缓冲区已满,则边界路由器检查DE缓冲区中是否有空格(S306)。 如果DE缓冲区中有空格,则边界路由器将DE缓冲区的一部分分配给具有高优先级的EF类(S307,308),并发送EF分组(S309)。 如果DE缓冲区已满,则边界路由器检查AF缓冲区中是否有空格(S311)。 如果AF缓冲区已满,边界路由器将丢弃该数据包(S312)。 如果AF缓冲区中有空格,则边界路由器将AF缓冲区的一部分分配给EF类(S313,S314),并发送EF包(S315)。 如果分类是AF,则边界路由器检查AF缓冲区中是否有空格(S317)。 如果AF缓冲区中有空格,则边界路由器分配AF数据包(S318),如果AF缓冲区中没有空格,则边界路由器检查DE缓冲区中是否有空格(S319)。 如果DE缓冲区已满,则边界路由器丢弃相应的数据包(S320)。 如果DE缓冲区中有空格,则边界路由器将DE缓冲区的一部分分配给AF类(S322,S323),并发送EF数据包(S333)。