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1. 发明授权

US07394762B2 Congestion control in data networks 有权
标题翻译：数据网络拥塞控制
公开(公告)号：US07394762B2
公开(公告)日：2008-07-01
申请号：US10829105
申请日：2004-04-21
申请人： Douglas Leith , Robert N. Shorten
发明人： Douglas Leith , Robert N. Shorten
IPC分类号： G01R31/08 , G06F11/00
CPC分类号： H04L47/10 , H04L47/193 , H04L47/263 , H04L47/283 , H04L69/16 , H04L69/163 , Y02D50/10
摘要： Disclosed are methods of congestion control in transmission of data in packets over a network link using a transport layer protocol, and transmission methods and protocol systems to implement such methods. The number of unacknowledged packets in transit is less than or equal to a congestion window value cwndi which can be varied according to an additive-increase multiplicative-decrease (AIMD) law having an increase parameter αi. In embodiments, αi can be increased during each congestion epoch at a time after the start of a congestion epoch, or based on time since the start of a congestion epoch. In embodiments, a multiplicative decrease parameter βi can be set based on a characteristic(s) of a data flow(s) carried over the network link. For example, the value of βi may be set as the value of the round-trip time of data traversing the link or based on the minimum of the mean inter-packet time.
摘要翻译：公开了使用传输层协议通过网络链路分组的数据传输中的拥塞控制的方法，以及实现这种方法的传输方法和协议系统。传输中未确认的数据包的数量小于或等于可以根据具有增加参数α >我。在实施例中，可以在拥塞时期开始之后的每个拥塞时期，或者基于从拥塞时期开始以来的时间来增加αi i i i。在实施例中，可以基于通过网络链路承载的数据流的特性来设置乘法减小参数βi i。例如，可以将β的值设置为穿过链路的数据的往返时间的值，或者基于平均分组间时间的最小值。

2. 发明申请

US20150085648A1 CONGESTION CONTROL IN DATA NETWORKS 审中-公开
标题翻译：数据网络中的约束控制
公开(公告)号：US20150085648A1
公开(公告)日：2015-03-26
申请号：US14035228
申请日：2013-09-24
申请人： Douglas Leith
发明人： Douglas Leith
IPC分类号： H04L12/801
CPC分类号： H04L47/12
摘要： A method of modifying transmission of packets over a network path comprises operating a processor to: transmit packets over the network path; determine, based on a number of unacknowledged packets transmitted over the network path, whether a congestion event has occurred, wherein an unacknowledged packet is a transmitted packet for which no acknowledgement has been received; and responsive to detecting a congestion event, operating a processor to modify the number of unacknowledged packets transmitted by a multiplicative factor βi, wherein the multiplicative factor βi is proportional to a ratio of a first time value to a second time value, the first time value being indicative of a minimum time required for a packet to be transmitted over the network path and the second time value being indicative of a current time required for a packet to be transmitted over the network path.
摘要翻译：一种通过网络路径修改分组传输的方法包括：操作处理器以：通过所述网络路径传输分组; 基于通过网络路径发送的多个未确认的分组来确定是否已经发生拥塞事件，其中未确认分组是未被接收到确认的已发送分组; 并且响应于检测到拥塞事件，操作处理器以修改由乘法因子＆bgr; i发送的未确认分组的数量;其中乘法因子bgr i与第一时间值与第二时间值的比率成比例，第一时间值指示通过网络路径发送分组所需的最小时间，并且第二时间值指示要通过网络路径发送分组所需的当前时间。

3. 发明申请

US20090252053A1 METHOD AND APPARATUS FOR ESTIMATING LINK QUALITY 有权
标题翻译：评估链接质量的方法和装置
公开(公告)号：US20090252053A1
公开(公告)日：2009-10-08
申请号：US12415185
申请日：2009-03-31
申请人： Douglas Leith , David Malone , Domenico Giustiniano
发明人： Douglas Leith , David Malone , Domenico Giustiniano
IPC分类号： H04L12/26 , H04W52/00
CPC分类号： H04W24/10 , H04W52/247 , H04W52/48 , H04W84/12
摘要： A driver for an IEEE 802.11 wireless network node determines a metric for link quality between the node and a remote node. The nodes communicate using a handshake protocol in which the first node expects to receive an acknowledgement (ACK) of receipt of a data packet from the remote node. The driver provides a measure for: collision induced losses (pc) between the first and remote nodes; a slot being erroneously detected as busy when a successful transmission could have been made (pexp) between the first and remote nodes; and a probability of successful reception of a packet when a collision occurs (pplc) between the first and remote nodes. The measure is based on a number (A) of acknowledgements received from the remote node vis-à-vis a number (T) of packets transmitted to the remote node. The driver can adjust one of carrier sensitivity or node transmission power based on the measure.
摘要翻译：用于IEEE 802.11无线网络节点的驱动程序确定节点和远程节点之间的链路质量的度量。节点使用握手协议进行通信，其中第一节点期望从远程节点接收到数据分组的接收的确认（ACK）。驱动程序提供了一种措施：在第一和远程节点之间的碰撞引起的损耗（pc）; 当第一和远程节点之间可能已经进行成功传输（pexp）时，错误地检测到一个槽被占用; 以及在第一和远程节点之间发生冲突（pplc）时成功接收分组的概率。该措施基于从远程节点接收到的数量（A）相对于发送到远程节点的数据（T）的数量。驱动器可以根据测量方式调整载波灵敏度或节点传输功率之一。

4. 发明申请

US20050237929A1 Congestion control in data networks 有权
标题翻译：数据网络拥塞控制
公开(公告)号：US20050237929A1
公开(公告)日：2005-10-27
申请号：US10829105
申请日：2004-04-21
申请人： Douglas Leith , Robert Shorten
发明人： Douglas Leith , Robert Shorten
IPC分类号： H04L12/26 , H04L12/56 , H04L29/06
CPC分类号： H04L47/10 , H04L47/193 , H04L47/263 , H04L47/283 , H04L69/16 , H04L69/163 , Y02D50/10
摘要： Disclosed are methods of congestion control in transmission of data in packets over a network link using a transport layer protocol, and transmission methods and protocol systems to implement such methods. The number of unacknowledged packets in transit is less than or equal to a congestion window value cwndi which can be varied according to an additive-increase multiplicative-decrease (AIMD) law having an increase parameter αi. In embodiments, αi can be increased during each congestion epoch at a time after the start of a congestion epoch, or based on time since the start of a congestion epoch. In embodiments, a multiplicative decrease parameter βi can be set based on a characteristic(s) of a data flow(s) carried over the network link. For example, the value of βi may be set as the value of the round-trip time of data traversing the link or based on the minimum of the mean inter-packet time.
摘要翻译：公开了使用传输层协议通过网络链路分组的数据传输中的拥塞控制的方法，以及实现这种方法的传输方法和协议系统。传输中未确认的数据包的数量小于或等于可以根据具有增加参数α >我。在实施例中，可以在拥塞时期开始之后的每个拥塞时期，或者基于从拥塞时期开始以来的时间来增加αi i i i。在实施例中，可以基于通过网络链路承载的数据流的特性来设置乘法减小参数βi i。例如，可以将β的值设置为穿过链路的数据的往返时间的值，或者基于平均分组间时间的最小值。

5. 发明授权

US08085683B2 Method and apparatus for estimating link quality 有权
标题翻译：估计链路质量的方法和装置
公开(公告)号：US08085683B2
公开(公告)日：2011-12-27
申请号：US12415185
申请日：2009-03-31
申请人： Douglas Leith , David Malone , Domenico Giustiniano
发明人： Douglas Leith , David Malone , Domenico Giustiniano
IPC分类号： H04J1/16
CPC分类号： H04W24/10 , H04W52/247 , H04W52/48 , H04W84/12
摘要： A driver for an IEEE 802.11 wireless network node determines a metric for link quality between the node and a remote node. The nodes communicate using a handshake protocol in which the first node expects to receive an acknowledgement (ACK) of receipt of a data packet from the remote node. The driver provides a measure for: collision induced losses (pc) between the first and remote nodes; a slot being erroneously detected as busy when a successful transmission could have been made (pexp) between the first and remote nodes; and a probability of successful reception of a packet when a collision occurs (pplc) between the first and remote nodes. The measure is based on a number (A) of acknowledgements received from the remote node vis-à-vis a number (T) of packets transmitted to the remote node. The driver can adjust one of carrier sensitivity or node transmission power based on the measure.
摘要翻译：用于IEEE 802.11无线网络节点的驱动程序确定节点和远程节点之间的链路质量的度量。节点使用握手协议进行通信，其中第一节点期望从远程节点接收到数据分组的接收的确认（ACK）。驱动程序提供了一种措施：在第一和远程节点之间的碰撞引起的损耗（pc）; 当第一和远程节点之间可能已经进行成功传输（pexp）时，错误地检测到一个槽被占用; 以及在第一和远程节点之间发生冲突（pplc）时成功接收分组的概率。该措施基于从远程节点接收到的数量（A）相对于发送到远程节点的数据（T）的数量。驱动器可以根据测量方式调整载波灵敏度或节点传输功率之一。

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