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1. 发明授权

US06389016B1 Data communication system and method for transporting data 有权
标题翻译：数据通信系统及数据传输方法
公开(公告)号：US06389016B1
公开(公告)日：2002-05-14
申请号：US09172631
申请日：1998-10-14
申请人： Amr Gaber Sabaa , Piotr Konrad Tysowski , Kadir Ozdemir
发明人： Amr Gaber Sabaa , Piotr Konrad Tysowski , Kadir Ozdemir
IPC分类号： H04L1256
CPC分类号： H04L49/9094 , H04L1/1635 , H04L49/90
摘要： In a data communication system, a sending entity divides data into a plurality of groups, each of which is segmented into a plurality of packets, and then sequentially transmits the packets in each group to the receiving entity. The receiving entity receives each packet, and determines whether the packet is sequentially received in a group. When an out-of-sequence error arises, the receiving entity discards the received packet, and sends a negative acknowledgment to the sending entity if no negative acknowledgment has been sent for the group. Only a single negative acknowledgment is sent for the group until an expected packet is received. When all packets of the group are received, the receiving entity sends a positive acknowledgment to the sending entity.
摘要翻译：在数据通信系统中，发送实体将数据分割成多个组，每个组分成多个分组，然后将每组中的分组顺序地发送给接收实体。接收实体接收每个分组，并确定分组是否被顺序地接收在一个组中。当出现失序错误时，接收实体丢弃所接收的分组，并且如果没有为该组发送否定确认，则向发送实体发送否定确认。发送一个单一的否定确认，直到收到一个预期的数据包。当接收到该组的所有分组时，接收实体向发送实体发送肯定确认。

2. 发明授权

US6128283A Method and apparatus for data transmission using a positive group acknowledgement protocol 失效
标题翻译：使用正组确认协议进行数据传输的方法和装置
公开(公告)号：US6128283A
公开(公告)日：2000-10-03
申请号：US984191
申请日：1997-12-03
申请人： Amr Gaber Sabaa , Kadir Ozdemir , Ming C. Leung , Derek Chung Lap Cheung
发明人： Amr Gaber Sabaa , Kadir Ozdemir , Ming C. Leung , Derek Chung Lap Cheung
IPC分类号： H04L1/16 , H04L1/18 , G01R31/08 , H04L12/28
CPC分类号： H04L1/1809 , H04L1/1621 , H04L1/188
摘要： A novel system and apparatus for transmitting data between the two nodes of a network is provided. The transmission is effected by using an error recovery protocol featuring a positive group acknowledgement. A sender unit on one node receives the user data and groups the data into consecutive cells, the cells being clustered into groups, each cell in a group being assigned a unique sequence number. The groups of cells are transmitted over a physical channel to a receiver unit on a different node. The receiver unit examines the cell stream and issues an acknowledgment message to the sender unit only when all of the cells in a group have been received. Once the sender unit has completed the transmission of a group of cells, it starts observing the physical channel for an acknowledgement message from the receiver unit. If after a predetermined time period the acknowledgement message has not been received, the sender unit transmits the group of cells again. This system allows to reduce the number of acknowledgement messages between the sender unit and the receiver unit while allowing low error-rate transmission between the nodes of the network.
摘要翻译：提供了一种用于在网络的两个节点之间传输数据的新型系统和装置。通过使用具有正组确认的错误恢复协议实现传输。一个节点上的发送者单元接收用户数据并将数据分组成连续的小区，小区被聚集成组，组中的每个小区被分配唯一的序列号。这些小区通过物理信道传输到不同节点上的接收机单元。只有当组中的所有单元已被接收时，接收器单元检查单元流并向发送器单元发出确认消息。一旦发送方单元完成了一组小区的传输，就开始从物理信道接收来自接收机单元的确认消息。如果在预定时间段之后还没有接收到确认消息，则发送器单元再发送一组单元。该系统允许减少发送器单元和接收器单元之间的确认消息的数量，同时允许网络节点之间的低错误率传输。

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