Goods & Services

Downloadable communication software for providing access to the Internet; Downloadable communications software for connecting computer network users; Downloadable communications software for connecting global computer networks; Recorded computer software and hardware for data network communications sold as a unit; Telecommunications and data networking hardware, namely, devices for transporting and aggregating voice, data, and video communications across multiple network infrastructures and communications protocols Design, maintenance, development and updating of computer software; Installation, maintenance, and updating of computer software; Services for maintenance of computer software; Computer software consultancy

Abstract

A method for congestion control in a data communication protocol employing acknowledged communication may include measuring a flight size. A transmission rate may be measured. A trend of the flight size may be determined. A trend of the transmission rate may be determined, and the trend may be derived from a transmission rate gradient calculation, in which either the transmission rate measurements or the transmission rate gradient calculations or both may be filtered to reduce their temporal variability. Whether there is a congestion may be detected according to the determined trend of the transmission rate and the trend of the flight size. Upon detection of the congestion, a change may be made from a current congestion control state to a new congestion control state. Data may be transmitted while respecting a maximum amount of unacknowledged data which the transmitting node may transmit. An apparatus is also disclosed.

IPC Classes  ?

• H04L 47/122 - Avoiding congestionRecovering from congestion by diverting traffic away from congested entities
• H04L 47/10 - Flow controlCongestion control
• H04L 47/11 - Identifying congestion
• H04L 47/127 - Avoiding congestionRecovering from congestion by using congestion prediction
• H04L 47/17 - Interaction among intermediate nodes, e.g. hop by hop
• H04L 47/193 - Flow controlCongestion control at layers above the network layer at the transport layer, e.g. TCP related
• H04W 8/04 - Registration at HLR or HSS [Home Subscriber Server]

Abstract

A method for congestion control in a data communication protocol employing acknowledged communication may include measuring a flight size. A transmission rate may be measured. A trend of the flight size may be determined. A trend of the transmission rate may be determined, and the trend may be derived from a transmission rate gradient calculation, in which either the transmission rate measurements or the transmission rate gradient calculations or both may be filtered to reduce their temporal variability. Whether there is a congestion may be detected according to the determined trend of the transmission rate and the trend of the flight size. Upon detection of the congestion, a change may be made from a current congestion control state to a new congestion control state. Data may be transmitted while respecting a maximum amount of unacknowledged data which the transmitting node may transmit. An apparatus is also disclosed.

IPC Classes  ?

• H04L 12/803 - Load balancing, e.g. traffic distribution over multiple links
• H04L 47/122 - Avoiding congestionRecovering from congestion by diverting traffic away from congested entities
• H04L 47/11 - Identifying congestion
• H04W 8/04 - Registration at HLR or HSS [Home Subscriber Server]
• H04L 47/127 - Avoiding congestionRecovering from congestion by using congestion prediction
• H04L 47/10 - Flow controlCongestion control
• H04L 47/17 - Interaction among intermediate nodes, e.g. hop by hop
• H04L 47/193 - Flow controlCongestion control at layers above the network layer at the transport layer, e.g. TCP related

Abstract

A method for congestion control in a data communication protocol employing acknowledged communication may include measuring a flight size. A transmission rate may be measured. A trend of the flight size may be determined. A trend of the transmission rate may be determined, and the trend may be derived from a transmission rate gradient calculation, in which either the transmission rate measurements or the transmission rate gradient calculations or both may be filtered to reduce their temporal variability. Whether there is a congestion may be detected according to the determined trend of the transmission rate and the trend of the flight size. Upon detection of the congestion, a change may be made from a current congestion control state to a new congestion control state. Data may be transmitted while respecting a maximum amount of unacknowledged data which the transmitting node may transmit. An apparatus is also disclosed.

IPC Classes  ?

• H04L 12/803 - Load balancing, e.g. traffic distribution over multiple links
• H04L 47/122 - Avoiding congestionRecovering from congestion by diverting traffic away from congested entities
• H04L 47/11 - Identifying congestion
• H04L 47/127 - Avoiding congestionRecovering from congestion by using congestion prediction
• H04W 28/02 - Traffic management, e.g. flow control or congestion control
• H04L 47/10 - Flow controlCongestion control
• H04L 47/17 - Interaction among intermediate nodes, e.g. hop by hop
• H04L 47/193 - Flow controlCongestion control at layers above the network layer at the transport layer, e.g. TCP related

Abstract

A method for congestion control in a data communication protocol employing acknowledged communication may include measuring a flight size. A transmission rate may be measured. A trend of the flight size may be determined. A trend of the transmission rate may be determined, and the trend may be derived from a transmission rate gradient calculation, in which either the transmission rate measurements or the transmission rate gradient calculations or both may be filtered to reduce their temporal variability. Whether there is a congestion may be detected according to the determined trend of the transmission rate and the trend of the flight size. Upon detection of the congestion, a change may be made from a current congestion control state to a new congestion control state. Data may be transmitted while respecting a maximum amount of unacknowledged data which the transmitting node may transmit. An apparatus is also disclosed.

IPC Classes  ?

• H04L 12/803 - Load balancing, e.g. traffic distribution over multiple links
• H04L 12/801 - Flow control or congestion control

Abstract

A method and apparatus for congestion control for acknowledged communication over networks detects congestion based on trends of flight size and transmission rate in order to adapt a congestion window in accordance with a detection result. Such congestion detection enables, for example, distinguishing between the congestion with or without unfair competition. Moreover, the measured transmission rate or its trend can be filtered to compensate for time variations. An end node or a proxy can be used for congestion control.

IPC Classes  ?

• H04L 12/803 - Load balancing, e.g. traffic distribution over multiple links
• H04L 12/801 - Flow control or congestion control

Abstract

The present invention relates to congestion control for acknowledged communication over networks. The congestion is detected on the basis of the trends of both the flight size and the transmission rate in order to adapt the congestion window in accordance with the detection result. Such congestion detection enables, for instance, distinguishing between the congestion with or without unfair competition. Moreover, the measured transmission rate or its trend is filtered to compensate for time variations. The invention may be embodied within an end node or within a proxy.

IPC Classes  ?

• H04L 12/801 - Flow control or congestion control