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1. 发明授权

US5282270A Network device location using multicast 失效
标题翻译：使用多播的网络设备位置
公开(公告)号：US5282270A
公开(公告)日：1994-01-25
申请号：US534154
申请日：1990-06-06
申请人： Alan B. Oppenheimer , Sean J. Findley , Gursharan S. Sidhu
发明人： Alan B. Oppenheimer , Sean J. Findley , Gursharan S. Sidhu
IPC分类号： H04L12/18 , H04L12/46 , H04L29/06
CPC分类号： H04L45/745 , H04L12/18 , H04L12/4604 , H04L29/06
摘要： A method and apparatus for determining the location of an entity using an alias (or entity name) in a communication system. A second node or entity transmits a first signal to a first router connected to a first local network of the communication system including the alias, wherein the alias includes a zone name. The first router forwards a second signal including the entity name from the first signal to other routers in the network until a second router connected to nodes having the zone name in the entity name is located. Each second router translates the second signal into a third signal which includes the alias, and using a first zone multicast address, multicasts the third signal to a first set of nodes. Each node of the first set of nodes determines whether the zone name contained within the alias is equal to a zone identifier for each node of the first set of nodes. Each node having the zone name determines whether the alias contained within the third signal is equal to alias information for the node. A first entity having the alias then transmits a fourth signal, which includes its network address, to the second entity in response to the third signal.
摘要翻译：一种用于在通信系统中使用别名（或实体名称）确定实体的位置的方法和装置。第二节点或实体向连接到包括别名的通信系统的第一本地网络的第一路由器发送第一信号，其中该别名包括区域名称。第一路由器将包括实体名称的第一信号从第一信号转发到网络中的其他路由器，直到连接到具有实体名称中的区域名称的节点的第二路由器被定位。每个第二路由器将第二信号转换成包括别名的第三信号，并且使用第一区多播地址将第三信号多播到第一组节点。第一组节点的每个节点确定包含在别名内的区域名称是否等于第一组节点的每个节点的区域标识符。具有区域名称的每个节点确定包含在第三信号内的别名是否等于该节点的别名信息。具有别名的第一实体然后响应于第三信号向第二实体发送包括其网络地址的第四信号。

2. 发明授权

US4661902A Local area network with carrier sense collision avoidance 失效
标题翻译：具有载波侦听冲突避免的局域网
公开(公告)号：US4661902A
公开(公告)日：1987-04-28
申请号：US715065
申请日：1985-03-21
申请人： Ronald R. Hochsprung , Lawrence A. Kenyon, Jr. , Alan B. Oppenheimer , Gursharan S. Sidhu
发明人： Ronald R. Hochsprung , Lawrence A. Kenyon, Jr. , Alan B. Oppenheimer , Gursharan S. Sidhu
IPC分类号： H04L12/413 , G06F15/16
CPC分类号： H04L12/413
摘要： A local area network is disclosed including apparatus and methods for transferring data between a plurality of data processing resources ("agents") coupled to a cable. In the preferred embodiment, a plurality of agents are coupled to a common cable for data transmission and reception. An agent newly coupled to the cable dynamically assigns itself a unique address on the cable to which other agents may send data. Once an agent has been assigned a final address, it may then transmit to, and receive data from, other agents on the cable. An agent desiring to send data to a receiving agent follows a three step handshake, wherein the sending agent transmits an "RTS" signal and within a predetermined time must receive a "CTS"signal from the receiving agent. The sending agent then transmits a data frame within a predetermined time after the CTS signal is received. The failure to detect a return CTS signal within the predetermined time denotes a collision condition. Re-transmission is attempted using a linear back off method which is adjusted based on previous cable traffic history.
摘要翻译：公开了一种局域网，其包括用于在耦合到电缆的多个数据处理资源（“代理”）之间传送数据的装置和方法。在优选实施例中，多个代理耦合到用于数据传输和接收的公共电缆。新耦合到电缆的代理在其他代理可以向其发送数据的电缆上动态地分配唯一的地址。一旦代理商被分配了一个最终地址，那么它可以传送到电缆上的其他代理并从其接收数据。希望向接收代理发送数据的代理遵循三步握手，其中发送代理发送“RTS”信号，并且在预定时间内必须从接收代理接收“CTS”信号。然后，发送代理在接收到CTS信号之后的预定时间内发送数据帧。在预定时间内检测返回CTS信号的失败表示碰撞状况。使用基于以前的电缆流量历史调整的线性回退方法来尝试再传输。

3. 发明授权

US5388213A Method and apparatus for determining whether an alias is available to uniquely identify an entity in a communications system 失效
标题翻译：用于确定别名是否可用于唯一地标识通信系统中的实体的方法和装置
公开(公告)号：US5388213A
公开(公告)日：1995-02-07
申请号：US146448
申请日：1993-10-29
申请人： Alan B. Oppenheimer , Sean J. Findley , Gursharan S. Sidhu
发明人： Alan B. Oppenheimer , Sean J. Findley , Gursharan S. Sidhu
IPC分类号： H04L12/18 , H04L12/46 , H04L29/06
CPC分类号： H04L45/745 , H04L12/18 , H04L12/4604 , H04L29/06
摘要： A method and apparatus for determining whether an alias (or entity name) is available for use in a communication system. A transmitting node or entity transmits a first signal including the alias over the communication system. The alias includes a zone name. If the transmitting node receives a reply signal to the first signal, then the alias is not available for use. Otherwise the alias is available for use. The transmitting node transmits the first signal to a first router connected to a first local network of the communication system. The first router forwards a second signal including the entity name from the first signal to other routers in the network until a second router connected to nodes having the zone name in the entity name is located. Each second router translates the second signal into a third signal which includes the alias, and using a first zone multicast address, multicasts the third signal to a first set of nodes. Each node of the first set of nodes determines whether the zone name contained within the alias is equal to a zone identifier for each node of the first set of nodes. Each node having the zone name determines whether the alias contained within the third signal is equal to alias information for the node. If an entity in the first set of nodes has the alias, then the entity transmits a reply signal, which includes its network address, to the transmitting node.
摘要翻译：一种用于确定别名（或实体名称）是否可用于通信系统中的方法和装置。发送节点或实体通过通信系统发送包括别名的第一信号。别名包含区域名称。如果发送节点接收到第一个信号的应答信号，则该别名不可用。否则可以使用别名。发送节点将第一信号发送到连接到通信系统的第一本地网络的第一路由器。第一路由器将包括实体名称的第一信号从第一信号转发到网络中的其他路由器，直到连接到具有实体名称中的区域名称的节点的第二路由器被定位。每个第二路由器将第二信号转换成包括别名的第三信号，并且使用第一区多播地址将第三信号多播到第一组节点。第一组节点的每个节点确定包含在别名内的区域名称是否等于第一组节点的每个节点的区域标识符。具有区域名称的每个节点确定包含在第三信号内的别名是否等于该节点的别名信息。如果第一组节点中的实体具有别名，则实体向发送节点发送包括其网络地址的应答信号。

4. 发明授权

US5150464A Local area network device startup process 失效
标题翻译：局域网设备启动过程
公开(公告)号：US5150464A
公开(公告)日：1992-09-22
申请号：US534144
申请日：1990-06-06
申请人： Gursharan S. Sidhu , Alan B. Oppenheimer , James E. Mathis
发明人： Gursharan S. Sidhu , Alan B. Oppenheimer , James E. Mathis
IPC分类号： H04L29/06
CPC分类号： H04L29/06
摘要： Method used by a first entity, typically a computer system, on a communication system for assigning itself a unique address known as a network address, which comprises a network number and a node identification number. The entity determines a unique network address for itself within a local subset of entities known as a local area network (LAN). A signal is then transmitted to determine whether a router is connected to the LAN, and if so, to determine if the network number of the address is within a range allowed by the router. If the network number is not within a range allowed by the router, then another network number is selected from a range of numbers provided by the router and another node ID are selected. It is determined whether this value is being used by any other entities in the LAN, and if so, node ID's are selected until an unused network address is ascertained. If all node ID's for an address are checked, then another network number is selected from the range and node ID's are again selected to determine a unique address. Once a unique address is ascertained, this is stored back into a parameter RAM area for a subsequent power up initialization and is used for the unique identification of the first entity.
摘要翻译：由通信系统上的第一实体（通常为计算机系统）使用的方法，用于向其自身分配称为网络地址的唯一地址，其包括网络号和节点标识号。实体在称为局域网（LAN）的实体的本地子集内为其自身确定唯一的网络地址。然后发送信号以确定路由器是否连接到LAN，如果是，则确定地址的网络号是否在路由器允许的范围内。如果网络号码不在路由器允许的范围内，则从路由器提供的数字范围中选择另一个网络号码，并选择另一个节点ID。确定该值是否由LAN中的任何其他实体使用，如果是，则选择节点ID，直到确定未使用的网络地址。如果检查了所有地址的节点ID，则从该范围中选择另一个网络号码，并再次选择节点ID以确定唯一地址。一旦确定了唯一地址，则将其存储回参数RAM区域中进行随后的上电初始化，并且用于第一实体的唯一标识。

5. 发明授权

US4689786A Local area network with self assigned address method 失效
标题翻译：具有自分配地址方式的局域网
公开(公告)号：US4689786A
公开(公告)日：1987-08-25
申请号：US715066
申请日：1985-03-21
申请人： Gursharan S. Sidhu , Alan B. Oppenheimer , Lawrence A. Kenyon, Jr. , Ronald R. Hochsprung
发明人： Gursharan S. Sidhu , Alan B. Oppenheimer , Lawrence A. Kenyon, Jr. , Ronald R. Hochsprung
IPC分类号： G06F13/00 , G06F12/06 , H04L12/413 , H04L29/12 , H04J3/24
CPC分类号： H04L61/2038 , G06F12/0669 , H04L12/413 , H04L29/12254 , H04L29/1232 , H04L61/2092
摘要： A local area network is disclosed including apparatus and methods for transferring data between a plurality of data processing resources ("agents") coupled to a cable. In the preferred embodiment, a plurality of agents are coupled to a common cable for data transmission and reception. An agent newly coupled to the cable dynamically assigns itself a unique address on the cable to which other agents may send data. Once an agent has been assigned a final address, it may then transmit to, and receive data from, other agents on the cable. An agent desiring to send data to a receiving agent follows a three step handshake, wherein the sending agent transmits an "RTS" signal and within a predetermined time must receive a "CTS" signal from the receiving agent. The sending agent then transmits a data frame within a predetermined time after the CTS signal is received. The failure to detect a return CTS signal within the predetermined time denotes a collision condition. Re-transmission is attempted using a linear back off method which is adjusted based on previous cable traffic history.
摘要翻译：公开了一种局域网，其包括用于在耦合到电缆的多个数据处理资源（“代理”）之间传送数据的装置和方法。在优选实施例中，多个代理耦合到用于数据传输和接收的公共电缆。新耦合到电缆的代理在其他代理可以向其发送数据的电缆上动态地分配唯一的地址。一旦代理商被分配了一个最终地址，那么它可以传送到电缆上的其他代理并从其接收数据。希望向接收代理发送数据的代理遵循三步握手，其中发送代理发送“RTS”信号，并且在预定时间内必须从接收代理接收“CTS”信号。然后，发送代理在接收到CTS信号之后的预定时间内发送数据帧。在预定时间内检测返回CTS信号的失败表示碰撞状况。使用基于以前的电缆流量历史调整的线性回退方法来尝试再传输。

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