US 7,120,126 B2 · Method for improved media quality feedback

Abstract

A method is provided for a local device in a network to determine media qualities for the transmission paths between it and all of the remote devices in a wireless network. Each of the devices in the network will be assigned at least one of a plurality of management time slots in a superframe rotation. Each device will always transmit a frame during this assigned time slot, whether it is a management frame or a null frame. Individual devices can listen during these frames, determine quality information about the transmission medium between the receiving device and the transmitting device, and based on this quality information set the transmission and reception parameters that the receiving device will use when later communicating with that particular transmitting device. The criteria for determining transmitting parameters and reception parameters can be different to make certain that compatible transmission and reception parameters are chosen among devices.

Claims20

Dependent claims

A method for a local device to determine media qualities of a plurality of transmission paths between the local device and a plurality of remote devices in a wireless network, each of the local device and the remote devices being assigned at least one of a plurality of management time slots in a superframe rotation, comprising:

transmitting a local frame from the local device to a network coordinator during each of the management time slots assigned to the local device, the local frame being transmitted according to a set of transmission criteria;
receiving a remote frame during each of the management time slots assigned to one of the remote devices, the remote frame being received according to a set of reception criteria;
determining quality information about a transmission medium between the local device and the remote device that transmitted the remote frame;
determining a modified set of transmission criteria in the local device for transmissions to the remote device based on the quality information;
determining a modified set of reception criteria in the local device for transmissions from the remote device based on the quality information;
and
storing in the local device the modified set of transmission criteria and the modified set of reception criteria as new transmission criteria and new reception criteria, respectively,
wherein the local frame is a management frame if the local device has management data to send to a network coordinator, or a null frame if the local device has no management data to send the coordinator.

5 more elements

A method for a local non-coordinator device to determine a media quality of a transmission path between the local non-coordinator device and a remote non-coordinator device in a wireless network, comprising:

receiving a first remote frame during a first management time slot assigned to the remote non-coordinator device, the first remote frame being received according to initial reception criteria;
determining quality information about a transmission medium between the local non-coordinator device and the remote non-coordinator device based on the reception of the first remote frame;
determining modified reception criteria in the local non-coordinator device for transmissions from the remote non-coordinator device based on the quality information;
and
storing the modified reception criteria as new reception criteria,
wherein the first remote frame is a management frame if the remote non-coordinator device has management data to send to a network coordinator, or a null frame if the remote non-coordinator device has no management data to send to the network coordinator.

3 more elements

storing initial transmission criteria in the local non-coordinator device;
receiving a remote frame during a management time slot assigned to the remote non-coordinator device, after storing the initial transmission criteria, the remote frame being received according to initial reception criteria;
determining quality information about a transmission medium between the local non-coordinator device and the remote non-coordinator device based on the reception of the remote frame;
determining a modified transmission criteria in the local non-coordinator device for transmissions to the remote non-coordinator device based on the quality information;
and
storing the modified transmission criteria as new transmission criteria,
wherein the remote frame is a management frame if the remote non-coordinator device has management data to send to a network coordinator, or a null frame if the remote non-coordinator device has no management data to send to the network coordinator.

4 more elements

Dependencies are inferred from the claim text.

Method for improved media quality feedback

Life of this patent

Method for improved media quality feedback

Life of this patent

Abstract

Claims20