Methods for controlling shared access to wireless transmission systems and increasing throughput of the same
First Claim
1. A method of establishing overlaid communications in a multi-carrier communication system between a plurality of wireless stations each capable of communicating on less than all carriers in the multi-carrier communication system comprising the steps of:
- providing each of the plurality of wireless stations capable of performing overlaid communications in the multi-carrier communication system a message which includes an assigned carrier and a commonly assigned calibration transmit power level for transmission, allowing a period of time for each of the plurality of wireless stations to transmit at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
transmitting from each of the plurality of wireless stations at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
receiving from each of the plurality of wireless stations information indicating transmissions from other ones of the plurality of wireless stations that they received and the receive power level of each of these received transmissions; and
using the received information to map which ones of the plurality of wireless stations can communicate with other ones of the plurality of wireless stations on assigned carriers, at a common transmit power level chosen from a plurality of available transmit power levels so that subsequent signals from some of the plurality of wireless stations arriving at substantially the same time at another of the wireless stations have a substantially similar receive power level at the another wireless station.
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Accused Products
Abstract
A wireless communication system implements a calibration mode by which individual nodes in the system can determine which other nodes in the system are physically close to them and therefore can be reached with less than full transmitting power. Nodes which can communicate with one another via low power can form a low power constellation (a subset of the complete network) whose nodes can communicate directly with one another using this low power arrangement. The direct communication mode may additionally be used by itself. In another mode, the nodes in the system can communicate amongst themselves via bridges—other, non-access point nodes—to lessen the load on the access point or to accommodate environmental or other conditions. Various ones of these modes may be combined into a predetermined cycle of communication modes to help the physical layer accommodate various types of data handled by the network using beacons or another coordinating technique. Overhead in the form of packet retransmission may be reduced by interpolating to recover lost packets rather than retransmitting them.
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Citations
31 Claims
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1. A method of establishing overlaid communications in a multi-carrier communication system between a plurality of wireless stations each capable of communicating on less than all carriers in the multi-carrier communication system comprising the steps of:
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providing each of the plurality of wireless stations capable of performing overlaid communications in the multi-carrier communication system a message which includes an assigned carrier and a commonly assigned calibration transmit power level for transmission, allowing a period of time for each of the plurality of wireless stations to transmit at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
transmitting from each of the plurality of wireless stations at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
receiving from each of the plurality of wireless stations information indicating transmissions from other ones of the plurality of wireless stations that they received and the receive power level of each of these received transmissions; and
using the received information to map which ones of the plurality of wireless stations can communicate with other ones of the plurality of wireless stations on assigned carriers, at a common transmit power level chosen from a plurality of available transmit power levels so that subsequent signals from some of the plurality of wireless stations arriving at substantially the same time at another of the wireless stations have a substantially similar receive power level at the another wireless station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
the multi-carrier communication system operates on a single frequency channel; and
the multi-carrier communication system subdivides the single frequency channel to form all available carriers.
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19. A method of establishing communications in a multi-carrier communication system between a plurality of wireless stations each capable of communicating on less than all carriers in the multi-carrier communication system comprising the steps of:
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providing each of the plurality of wireless stations capable of performing communications in the multi-carrier communication system a message which includes a commonly assigned calibration power level for transmission, allowing a period of time for each of the plurality of wireless stations to transmit at least one calibration message at the commonly assigned calibration power level;
transmitting from each of the plurality of wireless stations at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
receiving from each of the plurality of wireless stations information indicating transmissions from other ones of the plurality of wireless stations that they received and the receive power level of each of these received transmissions; and
using the received information to map the receive power levels and associated transmitting and receiving wireless stations. - View Dependent Claims (20, 21)
the multi-carrier communication system operates on a single frequency channel; and
the multi-carrier communication system subdivides the single frequency channel to form all available carriers.
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22. A method of establishing overlaid communications in a multi-carrier communication system between a plurality of wireless stations each capable of communicating on less than all carriers in the multi-carrier communication system comprising the steps of:
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providing each of the plurality of wireless stations capable of performing overlaid communications in the multi-carrier communication system a message which includes an assigned carrier and a commonly assigned calibration transmit power level for transmission, allowing a period of time for each of the plurality of wireless stations to transmit at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
transmitting from each of the plurality of wireless stations at least one calibration message on the assigned carrier at the commonly assigned calibration power level;
receiving from each of the plurality of wireless stations information indicating transmissions from other ones of the plurality of wireless stations that they received and the receive power level of each of these received transmissions; and
using the received information to map which ones of the plurality of wireless stations can communicate with other ones of the plurality of wireless stations on assigned carriers without substantially interfering with further ones of the plurality of wireless stations. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31)
the multi-carrier communication system operates on a single frequency channel; and
the multi-carrier communication system subdivides the single frequency channel to form all available carriers.
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Specification