System and method for adjusting media access control parameters in a wireless network
First Claim
1. A wireless local area network (WLAN) comprising:
- at least one access point radio; and
a plurality of nodes in wireless communication with the at least one access point radio according to media access control (MAC) parameters, each of the plurality of nodes having a quality of service (QoS) threshold for wireless communication with the at least one access point radio that is a function of the MAC parameters;
wherein each of the plurality of nodes comprises a controller configured to provide individualized control of the MAC parameters corresponding to a node, the controller programmed to;
measure current settings for at least a portion of the MAC parameters for the node;
determine approximate current settings for at least a portion of the MAC parameters for remaining nodes from the plurality of nodes;
input the current settings for the at least a portion of the MAC parameters of the node and the approximate current settings for the remaining nodes into a WLAN system model to generate a system model output; and
iteratively perform a gradient descent based optimization to adapt a setting of at least one of the MAC parameters for the node till the QoS threshold for the node based on the system model output is met, wherein the QoS threshold comprises at least one of a minimum signal throughput level and a maximum signal time delay.
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Abstract
A system for setting WLAN node operating parameters includes at least one access point (AP) radio and a plurality of nodes in wireless communication with the AP radio according to media access control (MAC) parameters. Each of the plurality of nodes has a quality of service (QoS) threshold for wireless communication with the AP radio that is a function of the MAC parameters and includes a controller configured to provide individualized control of the MAC parameters. The controller is programmed to measure current settings for at least a portion of the MAC parameters for the node, input the current settings for those MAC parameters of the node into a WLAN system model to generate a system model output, and adapt a setting of at least one of the MAC parameters for the node to meet the QoS threshold for the node based on the system model output.
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Citations
21 Claims
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1. A wireless local area network (WLAN) comprising:
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at least one access point radio; and a plurality of nodes in wireless communication with the at least one access point radio according to media access control (MAC) parameters, each of the plurality of nodes having a quality of service (QoS) threshold for wireless communication with the at least one access point radio that is a function of the MAC parameters; wherein each of the plurality of nodes comprises a controller configured to provide individualized control of the MAC parameters corresponding to a node, the controller programmed to; measure current settings for at least a portion of the MAC parameters for the node; determine approximate current settings for at least a portion of the MAC parameters for remaining nodes from the plurality of nodes; input the current settings for the at least a portion of the MAC parameters of the node and the approximate current settings for the remaining nodes into a WLAN system model to generate a system model output; and iteratively perform a gradient descent based optimization to adapt a setting of at least one of the MAC parameters for the node till the QoS threshold for the node based on the system model output is met, wherein the QoS threshold comprises at least one of a minimum signal throughput level and a maximum signal time delay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for selecting a plurality of operating parameters for a node in a wireless local area network (WLAN) comprising:
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deriving a local analytical model of the WLAN based on media access control (MAC) parameters and wireless signal traffic characteristics; acquiring local measurements of a portion of the MAC parameters at the node; determining an achieved quality of service (QoS) for the node by applying the acquired local measurements of the portion of the MAC parameters to the local analytical model; and performing an adaptive optimization of the local analytical model using gradient based optimization; and iteratively modifying at least one of the MAC parameters of the node based on the adaptive optimization till a QoS threshold for the node is met, wherein the QoS threshold for the node comprises at least one of a minimum signal throughput level and a maximum signal time delay. - View Dependent Claims (14, 15, 16)
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17. A controller for a hospital network node, wherein the controller comprises at least one processor configured to carry out programmable instructions executing the steps to:
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set a quality of service (QoS) requirement for a wireless signal transmission from the hospital network node, the wireless signal transmission being governed by a plurality of media access control (MAC) parameters; generate a model of a hospital network that is based on the plurality of MAC parameters and on signal traffic characteristics of the wireless signal transmission; receive measurements of MAC layer acknowledgements and signal retransmissions from the hospital network node; insert the received MAC layer acknowledgements and signal retransmissions from the WLAN node into the generated model of the hospital network; perform an adaptive optimization of the generated model using gradient-descent optimization upon insertion of the received MAC layer acknowledgements and signal retransmissions to determine a desired value for at least one of the plurality of MAC parameters that satisfies the QoS requirement for the wireless signal transmission by the hospital network node; and modify the at least one of the plurality of MAC parameters based on the adaptive optimization to the desired value till the QoS requirement for the wireless signal transmission by the hospital network node is met, wherein the QoS requirement comprises at least one of a minimum signal throughput level and a maximum signal time delay. - View Dependent Claims (18, 19, 20, 21)
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Specification