SYSTEM AND METHOD FOR SELECTING A NUMBER OF SPATIAL STREAMS TO BE USED FOR TRANSMISSION BASED ON PROBING OF CHANNELS
First Claim
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1. A method, comprising:
- (a) generating a Probability of Channel non-Correlation (PCC) function at a source node that indicates a probability of whether a plurality of spatial channels are non-correlated based on feedback from a destination node;
(b) determining a packet size of a data packet to be transmitted by the source node when the source node prepares to transmit the data packet, wherein the data packet comprises symbols;
(c) determining, at a source node before the source node transmits the data packet to the destination node, whether a packet size of the data packet is greater than a packet size threshold; and
(d) determining, at the source node when the packet size of the data packet is less than or equal to the packet size threshold, whether a current value of the PCC function is greater than a first threshold.
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Abstract
Systems and methods are provided for determining a number of spatial channels to use to transmit a data packet from a source node to a destination node. This determination can be made based on a Probability of Channel non-Correlation (PCC) function that is generated and updated by the source node based on feedback from the destination node. The PCC function indicates a probability of whether a plurality of spatial channels are non-correlated.
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Citations
30 Claims
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1. A method, comprising:
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(a) generating a Probability of Channel non-Correlation (PCC) function at a source node that indicates a probability of whether a plurality of spatial channels are non-correlated based on feedback from a destination node; (b) determining a packet size of a data packet to be transmitted by the source node when the source node prepares to transmit the data packet, wherein the data packet comprises symbols; (c) determining, at a source node before the source node transmits the data packet to the destination node, whether a packet size of the data packet is greater than a packet size threshold; and (d) determining, at the source node when the packet size of the data packet is less than or equal to the packet size threshold, whether a current value of the PCC function is greater than a first threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for generating a Probability of Channel non-Correlation (PCC) function at a source node that indicates a probability of whether a plurality of spatial channels are non-correlated based on feedback from a destination node, the method comprising:
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transmitting a data packet from the source node and starting an acknowledgement (ACK) timer; determining, at the source node upon expiration of the ACK timer, whether a data packet acknowledgement (ACK) message was received by the source node; and updating the PCC function at the source node based on whether the data packet ACK message was received. - View Dependent Claims (18, 19)
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20. A method, comprising:
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(a) generating a Probability of Channel non-Correlation (PCC) function at a source node that indicates a probability of whether a plurality of spatial channels are non-correlated based on feedback from a destination node; (b) determining a packet size of a data packet to be transmitted by the source node when the source node prepares to transmit the data packet, wherein the data packet comprises symbols; (c) determining, at a source node before the source node transmits the data packet to the destination node, whether a packet size of the data packet is greater than a packet size threshold; (e) when the packet size of the data packet is greater than the packet size threshold, determining, at the source node based on a current value of the PCC function, whether to transmit a probe packet; and (f) transmitting symbols of the probe packet, from the source node to the destination node, via a plurality spatial streams over a plurality of spatial channels to generate a data point that characterizes the likelihood of channel non-correlation. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification