Quality of service differentiation in wireless networks

A method for ensuring fairness in a wireless time slotted network, the method comprising:

• calculating a failure probability for transmitting over the network;
• determining a target contention window value for determining a change to a contention window by mapping the failure probability to a range of target contention window values, the range according to a differentiated quality of service (QoS) for a transmissions;
• and
• repeatedly altering the contention window for transmissions according to the determined change to the contention window after a predetermined number of attempted transmissions and one or more fairness metrics.

A computer-readable medium having computer-executable instructions to perform a method for providing differentiated quality of service (QoS) in a time slotted network, the method comprising:

• calculating a failure probability for a transmission over the network;
• determining a target value for determining a contention window according to a mapped function of the failure probability;
• and
• altering the contention window according to a scaling function of the target value, the scaling according to the QoS for the transmission.

A computer readable medium having computer-executable instructions to perform a method for ensuring fairness in a wireless time slotted network, the method comprising:

• calculating a failure probability for transmitting over the network;
• determining a target contention window value for determining a change to a contention window by mapping the failure probability to a range of target contention window values, the range according to a differentiated quality of service (QoS) for a transmissions;
• and
• repeatedly altering the contention window for transmissions according to the determined change to the contention window after a predetermined number of attempted transmissions and one or more fairness metrics.

A wireless device capable of ensuring fairness in a wireless time slotted network, the wireless device comprising:

• a network interface card (NIC) configured to transmit and receive signals to the wireless time slotted network;
• a network driver interface coupled to the NIC, the network driver interface configured to provide statistical parameters concerning the wireless time slotted network;
• a network monitor coupled to the network driver interface, the network monitor configured to monitor network statistics;
• a statistics engine coupled to at least the network monitor, the statistics engine configured to receive the statistical parameters and perform operations on the statistical parameters to determine one or more probabilities;
• and
• an adaptive parameter engine coupled to one or more of the statistics engine and the network driver interface, the adaptive parameter engine configured to determine a target value for determining a contention window according to a mapped function of the one or more probabilities to enable an alteration of the backoff period.

A computer system capable of ensuring fairness in a wireless time slotted network, the computer system comprising:

• a processor;
• a memory coupled to the processor;
• a network interface card (NIC) coupled to the processor, the NIC configured to transmit and receive signals to the wireless time slotted network;
• a network driver interface coupled to the NIC, the network driver interface configured to provide statistical parameters concerning the wireless time slotted network;
• a network monitor coupled to the network driver interface, the network monitor configured to monitor network statistics;
• a statistics engine coupled to at least the network monitor, the statistics engine configured to receive the statistical parameters and perform operations on the statistical parameters to determine one or more probabilities;
• and
• an adaptive parameter engine coupled to one or more of the statistics engine and the network driver interface, the adaptive parameter engine configured to determine a target value for determining a contention window according to a mapped function of the one or more probabilities to enable an alteration of the contention window.