Stmicroelectronics Gmbh

Inmos Limited

U4ea Technologies Limited

Other

Siemens Aktiengesellschaft

Gos Holdings Limited

Gos Networks Ltd

Peter William Thompson

Gajinder Singh Panesar

John A Carey

Neil Richards

Neil James Davies

Judith Yvonne Holyer

Christopher James Vowden

Laura Anne Lafave

Brian J Parsons

Michael David May

Graham Willmott

Christopher Paul Walker

Holm Hofestadt

Christopher P Walker

Erwin Reyzl

Chistopher P Walker

Pauline Patricia Francis-Cobley

Jeremy Thomas Bradley

One aspect provides a method of controlling an information flow in a data transmission system. In one embodiment, the method comprises receiving a plurality of data packets and generating a modified information flow. Data packets in the modified information flow are spaced with a variable spacing whilst the order of the data packets is maintained. The variable spacing between the data packets is exponentially distributed.

Data flow control

There is disclosed a method and controller for controlling an information flow in a data transmission system including receiving a plurality of data packets. The method and controller also includes selectively discarding and/or selectively time-shifting the data packets in a predetermined manner to generate a modified information flow. The method and controller also includes selectively discarding and/or selectively time-shifting the data packets of the modified information flow to generate at least one further modified information flow. The further modified information flow may be obtained in a selected one of a plurality of parallel steps.

Filtering data flows

There is disclosed a method and controller for controlling an information flow in a data transmission system. In one embodiment, the method and controller receives a plurality of data packets. The method and controller further generate a modified information flow by providing a variable spacing between the data packets that is exponentially distributed. The variable spacing between the data packets may be random or pseudo-random.

A method of allocating a priority level in an information flow in a data transmission system including receiving a plurality of data packets and allocating a priority level to each data packet is provided with a controller employing such method. The priority level may be determined in accordance with determining a class of loss of the data packet and a class of service for the data packet. The priority level is also a function of the current load of the information flow. It has been established that the choice for each degree of freedom should preferably be made independently and concurrently. The invention, therefore, provides a method for performing such a composite choice.

Allocating priority levels in a data flow

There is disclosed a method and controller for controlling an information flow in an acyclic data transmission system including receiving a plurality of data packets, and allocating a priority level for each data packet including a class of loss for the data packet and a class of urgency of service for the data packet. The method and controller also include servicing the data packets in accordance with the priority levels and outputting the data packets at a configured rate.

Prioritizing data with flow control

There is disclosed a method and controller for controlling an information flow in a data transmission system including receiving a plurality of data packets having a received packet length and at a received sample rate. The method and controller also includes determining a configured packet length for each data packet based on a configured service rate for each data packet. The method and controller may also include scheduling each data packet in accordance with a respective configured packet length.

Information flow control in a packet network based on variable conceptual packet lengths

A routing device for routing streams at a node in a packet transmission network receives a stream request, reads specified parameters and any values for loss and delay already incurred at preceding nodes in the network, or specified parameters as modified to take account of loss and delay already incurred at preceding nodes in the network, to determine in conjunction with existing streams already being handled by the routing device whether to accept or reject the stream, allocates one or more buffers to the stream if the stream request has been accepted, transmits the stream request with modified values for loss and delay, or with modified parameters to take account of loss and delay incurred at this and preceding nodes in the network if the stream request has been accepted, and returns a fail signal if the stream request has been rejected.

Routing Device

A data reception unit for receiving a plurality of data streams over a data channel, the data streams being received as amounts of data and each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream, the data reception unit comprising: a data stream memory comprising a plurality of data stream storage areas, each for storing data from a respective one of a set of the data streams, and an escape buffer; a first storage information memory for holding first storage information for facilitating storage in the respective data stream storage area of data from the set of the data streams; and a data storage controller for, for each received amount of data, receiving the identity portion of the amount of data and performing a storage operation comprising: accessing the first storage information memory; and if the first storage information memory holds first storage information for the data stream identified by the identity portion, storing the data portion of the amount of data in the data stream storage area corresponding to that data stream; and if the first storage information memory does not hold first storage information for the data stream identified by the identity portion, storing the data portion of the amount of data in the escape buffer; and a processing unit connected to the escape buffer for performing an assembly operation comprising executing steps to assemble the information stored in the escape buffer into respective data streams.

Data transmission apparatus for transmitting ATM data streams

A data reception unit for receiving a plurality of data streams over a data channel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas and a buffer, a first storage information memory for holding first storage information, a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation based on the identity portion.

Data transfer

Data reception apparatus for receiving ATM data streams

A data reception unit for receiving a plurality of data streams over a data channel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas and a reserve buffer, a first storage information memory for holding first storage information, a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation based on the identity portion.

Reception of multiple data messages over a transmission medium with conversion into suitable form

A data reception unit for receiving a plurality of data streams over a data channel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas, and a buffer; a first storage information memory for holding first storage information a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation based on the identity portion.

Data stream transfer apparatus for receiving a data stream of data cells at variable time intervals and transmitting data frames at predetermined time intervals, including a receiving apparatus, a buffer memory, a data transfer interface, a central processing unit (CPU), and a memory access unit. The receiving apparatus receives the data cells and stores them in the buffer memory. The data transfer interface transfers data frames out of the apparatus at the predetermined time intervals and generates an indication that the data frame has been transferred. The memory access unit receives data defining a location of a data frame in the buffer memory, accesses the buffer memory to retrieve that data frame and transmits that data frame to the data transfer interface. The CPU, upon receiving the indication, determines a time for transfer of a subsequent data frame, and upon reaching that time, transmits to the memory access unit the location of the subsequent frame in the buffer memory.

Data stream transfer apparatus for receiving a data stream and transmitting data frames at predetermined intervals

A data reception unit for receiving a plurality of data streams over a data chanel. The data streams are received as amounts of data, each amount of data comprising a data portion including data from a data stream and an identity portion identifying that data stream. The data reception unit comprises a data stream memory comprising a plurality of data stream storage areas and a reserve buffer, a first storage information memory for holding first storage information, a processing unit, and a data storage controller. The data storage controller, for each received amount of data, receives the identity portion of the amount of data and performs a storage operation-based on the identity portion.

Growing community of inventors

Bristol, United Kingdom

Peter William Thompson