ACK/NACK detection in wireless communication
First Claim
1. A method for improving detection of acknowledgment or negative acknowledgment signals in a mobile terminal, comprising:
- receiving a radio signal from a base station connected to said mobile terminal, said radio signal normally including either an acknowledgment signal or a negative acknowledgment signal;
estimating a probability of a discontinuous transmission;
calculating a minimum acknowledgment signal threshold for said mobile terminal to correctly detect said acknowledgment signal using said probability of said discontinuous transmission; and
detecting whether said acknowledgment signal was received or whether a negative acknowledgment signal was received using said minimum acknowledgment signal threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
Improved ACK/NACK detection in a mobile terminal of a wireless communication system is disclosed. The ACK/NACK detection uses knowledge about the power of the acknowledgment/negative acknowledgment signal along with the probability that a DTX will occur to increase the probability that the ACK signal will be correctly detected. The probability that a DTX will occur is determined by observing the transmit power commands issued to the mobile terminal. A high number of power up commands relative to power down commands may indicate a poor quality uplink meaning that a DTX is likely to occur. This Abstract is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
-
Citations
34 Claims
-
1. A method for improving detection of acknowledgment or negative acknowledgment signals in a mobile terminal, comprising:
-
receiving a radio signal from a base station connected to said mobile terminal, said radio signal normally including either an acknowledgment signal or a negative acknowledgment signal;
estimating a probability of a discontinuous transmission;
calculating a minimum acknowledgment signal threshold for said mobile terminal to correctly detect said acknowledgment signal using said probability of said discontinuous transmission; and
detecting whether said acknowledgment signal was received or whether a negative acknowledgment signal was received using said minimum acknowledgment signal threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A receiver having improved acknowledgment or negative acknowledgment signal detection in a mobile terminal of a wireless communication system, comprising:
-
a front end receiver for receiving a radio signal from a base station connected to said mobile terminal, said radio signal normally including either an acknowledgment signal or a negative acknowledgment signal;
a control unit for estimating a probability of a discontinuous transmission;
a threshold computation unit for calculating a minimum acknowledgment signal threshold for said mobile terminal to correctly detect said acknowledgment signal using said probability of said discontinuous transmission; and
a detector unit for detecting whether said acknowledgment signal was received or whether a negative acknowledgment signal was received using said minimum acknowledgment signal threshold. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A method for improving detection of acknowledgment or negative acknowledgment signals in a mobile terminal at a time when said mobile terminal is connected to multiple base stations, comprising:
-
receiving a radio signal from said multiple base stations at said mobile terminal, each radio signal normally including either an acknowledgment signal or a negative acknowledgment signal;
estimating a probability of a discontinuous transmission for each one of said base stations;
calculating a minimum acknowledgment signal threshold for said mobile terminal to correctly detect said acknowledgment signal for each one of said base stations using said probability of a discontinuous transmission for a respective one of said base stations; and
detecting whether said acknowledgment signal was received for each one of said base stations or whether a negative acknowledgment signal was received for each one of said base stations using said minimum acknowledgment signal threshold for a respective one of said base stations. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
-
Specification