SIGNAL QUALITY MEASUREMENT SYSTEM
First Claim
1. A method of improving error detection in a communication system, the method comprising:
- receiving an uplink signal from a transmitter at a receiver wherein the uplink signal contains a data portion and a transmitted result of a hash function, wherein the uplink signal is received at a time based on a slot start time and a random timing offset, and further wherein the uplink signal is received while at least a portion of a second signal is received from a second transmitter;
measuring a noncoherent energy metric for the uplink signal;
computing a local result of the hash function using the data portion; and
discarding the uplink signal if the transmitted result matches the local result, but the noncoherent energy metric is below a threshold value.
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Accused Products
Abstract
This disclosure relates to method, device and system for measuring signal quality in a communication system. An access point receives an uplink signal from a transmitter. The uplink signal contains a data portion and a result of a hash function. The uplink signal is received at a time based on a slot start time and a random timing offset and is received while a portion of a second signal is received from a second transmitter. The access point measures a noncoherent energy metric for the uplink signal. The access point computes a local result of the hash function using the data portion. The uplink signal is then discarded if the result of the hash function matches the local result of the hash function but the noncoherent energy metric is below a threshold value.
106 Citations
15 Claims
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1. A method of improving error detection in a communication system, the method comprising:
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receiving an uplink signal from a transmitter at a receiver wherein the uplink signal contains a data portion and a transmitted result of a hash function, wherein the uplink signal is received at a time based on a slot start time and a random timing offset, and further wherein the uplink signal is received while at least a portion of a second signal is received from a second transmitter; measuring a noncoherent energy metric for the uplink signal; computing a local result of the hash function using the data portion; and discarding the uplink signal if the transmitted result matches the local result, but the noncoherent energy metric is below a threshold value. - View Dependent Claims (2, 3, 4, 5)
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6. An access point comprising:
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a receiver configured to; receive an uplink signal from a transmitter wherein the uplink signal contains a data portion and a transmitted result of a hash function, wherein the uplink signal is received at a time based on a slot start time and a random timing offset, and further wherein the uplink signal is received while at least a portion of a second signal is received from a second transmitter; measure a noncoherent energy metric for the uplink signal; compute a local result of the hash function using the data portion; and discard the uplink signal if the transmitted result matches the local result, but the noncoherent energy metric is below a threshold value. - View Dependent Claims (7, 8, 9, 10)
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11. A system comprising:
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a node configured to; transmit an uplink signal from wherein the uplink signal contains a data portion and a transmitted result of a hash function; a receiver configured to; receive the uplink signal, wherein the uplink signal is received at a time based on a slot start time and a random timing offset, and further wherein the uplink signal is received while at least a portion of a second signal is received from a second node; measure a noncoherent energy metric for the uplink signal; compute a local result of the hash function using the data portion; and discard the uplink signal if the transmitted result matches the local result, but the noncoherent energy metric is below a threshold value. - View Dependent Claims (12, 13, 14, 15)
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Specification