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High volume uplink in a broadband satellite communications system
| Details |
Inventors: Kay, Stan;
Assignee: Hughes Electronics Corporation (El Segundo, CA)
Primary Examiner: Maung; Nay
Assistant Examiner: Dean; Raymond
Attorney, Agent or Firm: Whelan; John T.
In a communication system with a bandwidth-on-demand processor, which may be power limited and connected to a myriad of terminals via relatively long delay paths, and another processor, which is connected to a few terminals via relatively short delay paths, an approach for effectively coordinating the processors is disclosed. A bandwidth controller receives a message requesting bandwidth from a remote processor and selectively grants the bandwidth request. The bandwidth controller transmits an assignment message that specifies a bandwidth allocation to the remote processor, and concurrently transmits a control message. A switch is configured to forward the assignment message to the remote processor. A controller is coupled to the switch and is configured to receive the control message, wherein the control message provides bandwidth allocation. The above arrangement has particular applicability to a satellite communications system. |
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DETAILED DESCRIPTION According to one aspect of the invention, a method is provided for exchanging data in a communications system that includes a controller coupled to a switch.
The method includes receiving a message requesting bandwidth from a processor.
The method also includes selectively granting the bandwidth request by a bandwidth controller, and transmitting an assignment message that specifies a bandwidth allocation based upon the granting step to the processor.
Further, the method includes initiating transmission of a control message to the controller to provide bandwidth allocation information concurrently with the transmitting step.
Under this approach, the system capacity is efficiently utilized.
According to another aspect of the invention, a communications system for exchanging data is disclosed.
A bandwidth controller is configured to receive a message requesting bandwidth from a remote processor and to selectively grant the bandwidth request.
The bandwidth controller transmits an assignment message that specifies a bandwidth allocation to the remote processor and concurrently transmits a control message.
A switch is configured to forward the assignment message to the remote processor.
A controller is coupled to the switch and configured to receive the control message, wherein the control message provides bandwidth allocation.
The above arrangement advantageously adapts dynamically to bandwidth requirements of the satellite terminals.
According to another aspect of the invention, a communications system that has a controller coupled to a switch includes means for receiving a message requesting bandwidth from a processor.
The system also includes means for selectively granting the bandwidth request, and means for transmitting an assignment message that specifies a bandwidth allocation based upon the bandwidth request to the processor.
The system further includes means for initiating transmission of a control message to the controller to provide bandwidth allocation information concurrently with the transmission of the assignment message
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