Multi-dimensional adaptive transmission technique
First Claim
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1. A method of performing a log on procedure to a satellite-based communication network, comprising:
- determining, at a remote terminal in the satellite-based communication network, an initial transmit power level based on a predefined value;
transmitting, from the remote terminal, a plurality of logon messages at the initial transmit power level to a hub in the satellite-based communication network;
determining whether one or more acknowledgements are received for the plurality of logon messages transmitted at the initial transmit power level;
when determining that no acknowledgements were received for the plurality of logon messages transmitted at the initial transmit power level, determining an increased transmit power level greater than the initial transmit power level;
transmitting, from the remote terminal, a second plurality of logon messages to the hub at the increased transmit power level;
determining whether one or more acknowledgements are received for the plurality of logon messages transmitted at the increased transmit power level;
when determining that one or more acknowledgements were received for the plurality of logon messages transmitted at the increased transmit power level, configuring the remote terminal for communication with the hub based on the increased transmit power level.
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Abstract
Method and apparatus for dynamically optimizing the transmission level of each remote terminal in a satellite-based communication network. Each remote terminal maintains quasi-error-free communication at the highest efficiency level available under changing link conditions and network configurations, without requiring the reservation of substantial power margins, which results in a much more efficient satellite network.
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Citations
20 Claims
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1. A method of performing a log on procedure to a satellite-based communication network, comprising:
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determining, at a remote terminal in the satellite-based communication network, an initial transmit power level based on a predefined value; transmitting, from the remote terminal, a plurality of logon messages at the initial transmit power level to a hub in the satellite-based communication network; determining whether one or more acknowledgements are received for the plurality of logon messages transmitted at the initial transmit power level; when determining that no acknowledgements were received for the plurality of logon messages transmitted at the initial transmit power level, determining an increased transmit power level greater than the initial transmit power level; transmitting, from the remote terminal, a second plurality of logon messages to the hub at the increased transmit power level; determining whether one or more acknowledgements are received for the plurality of logon messages transmitted at the increased transmit power level; when determining that one or more acknowledgements were received for the plurality of logon messages transmitted at the increased transmit power level, configuring the remote terminal for communication with the hub based on the increased transmit power level. - View Dependent Claims (2, 3, 4)
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5. A method, comprising:
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(a) transmitting, from a remote terminal in a satellite-based communication network, a plurality of maintenance packets to a hub at a first transmit power level; (b) receiving, at the remote terminal, one or more reply packets containing reception level measurements for one or more of the maintenance packets transmitted at the first transmit power level; (c) calculating a first average reception level for the maintenance packets transmitted at the first transmit power level; (d) calculating a first gain equivalent value based on the first average reception level at the first transmit power level and a determined first satellite transmitter input power level; (e) repeating steps (a)-(d) for a second transmit power level greater than the first transmit power level, calculating a second gain equivalent value based on a second average reception level at the second transmit power level and a determined second satellite transmitter input power level; (f) comparing a difference between the first gain equivalent and the second gain equivalent to a predetermined gain difference threshold; and (g) when the difference between the first gain equivalent and the second gain equivalent exceeds the predetermined gain difference threshold, calculating and storing at the remote terminal a maximal transmit power level based on one or more of the first transmit power level and the second transmit power level. - View Dependent Claims (6, 7, 8)
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9. A method, comprising:
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determining, by a remote terminal in a satellite-based communication network, a first transmit power level for transmitting maintenance packets to a hub in the satellite-based communication network; determining a maximal transmit power level for transmitting data to the hub; transmitting one or more maintenance packets to the hub, wherein each maintenance packet is configured to include an information item containing a difference between the first transmit power level for transmitting the maintenance packets and the maximal transmit power for transmitting data to the hub; receiving, at the remote terminal, one or more reply packets corresponding to the one or more maintenance packets, each said reply packet containing a measured reception level of its corresponding maintenance packet by the hub; and adjusting, at the remote terminal, one or more transmit power levels for transmitting data to the hub based on the received measured reception levels in the reply packets. - View Dependent Claims (10, 11, 12)
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13. A method, comprising:
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receiving, at a hub in a satellite-based communication network, maintenance packets from a plurality of remote terminals; measuring the reception level of the maintenance packets received from the plurality of remote terminals; identifying a plurality of different timeslot types in a return link of the satellite-based communication network, wherein each of the plurality of remote terminals are associated with one or more of the different timeslot types; and based on the measured reception levels of the maintenance packets, reconfiguring the distribution of allocations of the plurality of remote terminals to the plurality of different timeslot types. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification