Differential signal-to-noise ratio based rate adaptation
View Patent ↗Systems and methods for implementing a differential signal to noise ratio (DSNR) based rate adaptation for wireless networks are disclosed. The described methods probabilistically adapt the rate of data transmission based on an assessment of the causes of data loss. The described methods include determining a DSNR for data transmission during a predetermined window of time and adapting the transmission rate in a probabilistic manner responsive to the differential SNR and a differential SNR threshold for the data transmission.
1. A device comprising:
a memory;
one or more processors operatively coupled to the memory;
a differential SNR module configured to determine a differential signal to noise ratio based on a signal to noise ratio for a wireless transmission; and
a rate adaptation module configured to:
determine one or more causes of packet loss based on the differential signal to noise ratio; and
adapt a transmission rate based on the one or more causes, and at least one of the signal to noise ratio and the differential signal to noise ratio.
2. The device of claim 1 , wherein the differential SNR module determines the signal to noise ratio as an average signal to noise ratio of data received over a predetermined number of frames and the differential signal to noise ratio as the difference between the signal to noise ratio and a minimum signal to noise ratio.
3. The device of claim 1 further comprising a traffic analysis module configured to determine a time difference between two successive data transmissions.
4. The device of claim 3 , wherein the rate adaptation module adapts the transmission rate based on the signal to noise ratio if the time difference is at least equal to a predetermined value.
5. The device of claim 3 , wherein the rate adaptation module adapts the transmission rate based on the differential signal to noise ratio if the time difference is less than a predetermined value and the one or more causes comprise loss due to contention.
6. The device of claim 1 , wherein the rate adaptation module further adapts the transmission rate based on at least one member selected from a group consisting of a data loss ratio, a transmission throughput, a transmission success count, and a trans-mission failure count.
7. The device of claim 1 , wherein the device comprises an access point of a wireless network.
8. The device of claim 1 , wherein the device comprises a client device of a wireless network.