Abstract:
PURPOSE: An apparatus for controlling connection acceptance to support multiple qos and method thereof are provided, considering properly traffic parameters such as peak cell rate, sustained cell rate, maximum burst size, minimum cell rate, etc., latency characteristics, service quality grades, etc., according to traffic kinds. CONSTITUTION: A traffic kind classification device(101) discriminates what kind of traffic characteristics the connection requested traffic has. A service quality grade classification device(102) determines a service quality grade that a connection requested variable bit rate(VBR) belongs to. An equivalent band calculator(103-105) gets equivalent bands to meet service qualities, based on the value of a peak cell rate(PCR). An equivalent band calculator(106) gets equivalent bands, based on the value of a minimum cell rate(MCR). A connection acceptance determination device(107) judges whether so much bands to approve the connection of the connection requested traffic remains.
Abstract:
PURPOSE: A method for assigning a dynamic band on an ATM-PON(Passive Optical Network) is provided to determine a band to be assigned to ONUs(Optical Network Units) in order to satisfy service quality of connections set to each of the ONUs from information on the number of non-realtime cells and traffic presenter information, thereby increasing using efficiency of an uplink transmission channel. CONSTITUTION: An ATM-PON compares a sum of fixed BW(Bandwidth) of all ONUs with a link capacity(101). If the sum is bigger than the link capacity, the ATM-PON assigns bands to the ONUs in proportion to effective BWs(102). If a band an ONU exceeds the fixed BW, the ATM-PON assigns bands to the ONU as many as the fixed BW(103), and divides the rest exceeding bands to the rest ONUs(104). If the sum is smaller than the link capacity, the ATM-PON assigns bands to all the ONUs(106), and compares a sum of maximum BWs of all the ONUs with the link capacity(107). If the sum is bigger, the ATM-PON divides the rest bands to additionally assign the bands(108). If total bands exceed the maximum BW, the ATM-PON controls assigning amounts(109), and divides the remaining exceeding bands to the rest ONUs with the same method(110).
Abstract:
본 발명은 비동기 전송 모드 수동 광통신망(ATM-PON) 상에서 복수의 광통신망 유닛(ONU)을 구비한 ONU그룹과 광 종단장치(OLT) 간의 매체 접속 제어(MAC) 프로토콜에서의 동적 대역 할당 방법에 관한 것으로서, 상기 광종단장치에서 ONU그룹의 각 ONU에 설정된 연결들의 트래픽 표현자 정보와 각 ONU에 대기 중인 비실시간 셀의 수에 대한 정보로부터 각 ONU에 설정된 연결의 서비스 품질을 만족시키도록 해당 ONU에 할당할 대역을 결정하여, 상향 전송 채널의 이용률을 높이면서도 효율적인 전송을 가능하게 할 수 있다는 장점이 있다.
Abstract:
PURPOSE: A frame structure for a MAC(Medium Access Control) signal in an ATM(Asynchronous Transfer Mode) PON(Passive Optical Network) and a MAC method are provided to define upstream/downstream transmission frames between an ONU(Optical Network Unit) and an OLT(Optical Line Termination), transmit local cell arrival information of the ONU using the upstream frame to previously perform a reservation, and secure the QoS(Quality of Service) of an ATM traffic. CONSTITUTION: A downstream from an OLT to an ONU group has a PLOAM cell including a data grant field(1021), a PLOAM grant field, and a divided-slot grant field(1011). An upstream from the ONU group to the OLT has a divided-slot structure with a certain size divided as a plurality of mini-slots for transmitting cell information regarding the number of real-time cell and non-real-time cell received in a corresponding ONU. A QoS class field is allocated for classifying real-time/non-real-time traffics in a data grant field format structure.
Abstract translation:目的:提供ATM(异步传输模式)PON(无源光网络)和MAC方法中的MAC(Medium Access Control)信号的帧结构,以定义ONU(光网络单元)和 OLT(Optical Line Termination,光线路终端),使用上行帧发送ONU的本地小区到达信息,以预先执行预约,并保证ATM业务的QoS(Quality of Service)。 构成:从OLT到ONU组的下游具有PLOAM小区,包括数据许可字段(1021),PLOAM授权字段和分时隙许可字段(1011)。 从ONU组到OLT的上游具有一定大小的划分为多个小时隙的分时隙结构,用于发送关于在对应的ONU中接收到的实时小区和非实时小区的个数的小区信息 ONU。 分配QoS类字段用于在数据授权字段格式结构中对实时/非实时业务进行分类。
Abstract:
PURPOSE: A device and a method for controlling connection acceptance using band reservation method, in a network simultaneously supporting signal virtual connection and permanent virtual connection, are provided to control connection acceptance through the band reservation method considering a call blocking probability of signal virtual connection. CONSTITUTION: A connection kind discriminator(101) receives the request of connection setup from a service user, to decide the kinks of the requested connection between signal virtual connection and permanent virtual connection. A usable band calculator(102) of signal virtual connection receives the setup request of the signal virtual connection from the connection kind discriminator(101), to calculate a usable band of the signal virtual connection. A usable band calculator(103) of permanent virtual connection receives the setup request of the permanent virtual connection from the connection kind discriminator(101), to calculate a usable band of the permanent connection. A connection acceptance decider(104) receives a connection setup request from the usable band calculators(102,103), to decide whether a band capable of approving requested connection exists according to the kind of the connection.
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 다중서비스 품질을 지원하는 연결수락제어 장치 및 그방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은, 트래픽 종류별로 최대 셀 전송율, 평균 셀 전송율, 최대 버스트 크기, 최소 셀 전송율 등의 트래픽 파라미터, 지연특성 및 서비스 품질등급 등을 적절히 고려하여 연결수락제어를 하는 장치 및 그 방법을 제공하고자 함. 3. 발명의 해결방법의 요지 본 발명은, 어떤 트래픽 특성을 갖는지 판단하는 단계; 항등 비트율(CBR) 트래픽의 연결설정 요구이면 항등 비트율(CBR)에 할당된 대역에 따라 연결을 제어하는 단계; 가변 비트율(VBR) 트래픽의 연결설정 요구이면 가변 비트율(VBR)에 할당된 대역에 따라 연결을 제어하는 단계; 가용 비트율(ABR) 트래픽의 연결설정 요구이면 가용 비트율(ABR)에 할당된 대역에 따라 연결을 제어하는 단계; 및 비규정 비트율(UBR) 트래픽의 연결설정 요구이면 비규정 비트율(UBR) 트래픽의 수(#)에 따라 연결을 제어하는 단계를 포함함. 4. 발명의 중요한 용도 본 발명은 망자원에의 연결 수락 제어에 이용됨.