Interference mitigation mechanism to enable spatial reuse in uwb networks
AssigneeQUALCOMM Incorporated
InventorsSaishankar Nandagopalan, Dinesh Dharmaraju, Ranganathan Krishnan
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Abstract
Mechanism to mitigate signal interference in ultra wide band (UWB) networks based on spatial reuse of the signal spectrum. Efficient media access control (MAC) in wireless networks is challenging because wireless devices may be affected by signal interference during spatial multiplexing. Wireless ad-hop (multi-hop) networks exploit the limited system bandwidth available via spatial reuse to enhance aggregate throughput. Spatial reuse allows concurrent data exchanges, resulting in higher throughputs.
Claims23
In an ad-hoc wireless communication system, a method for resource management comprising:
- receiving a request to reserve message from a first wireless communication device;
- determining a signal quality value based on the received request to reserve message;
- providing, as a response, a transmission reservation confirm message which includes an assigned data rate;
- determining a threshold margin of the signal value at the data rate;
- and
- transmitting a reduction in power value for adjusting the power of the first WCD based on a received power in accordance with the signal quality value and the threshold margin, wherein the adjustment provides an increase in spatial reuse of signal spectrum.
A wireless communication device (WCD) providing resource management for increased spatial reuse in an ad-hoc wireless communication system, the WCD comprising:
- an input that receives a transmission allocation request message from an external wireless communication device;
- a signal quality determining circuit in communication with said input, said signal quality determining circuit determining a signal quality value based on the received transmission allocation request message;
- providing a transmission allocation response, the transmission allocation response providing a data rate;
- and determining a threshold margin of the signal value at the data rate;
- and
- an output circuit in communication with said signal quality determining circuit, said output transmitting a reduction in power value for adjusting the power of the external WCD based on a received power in accordance with the signal quality value and the threshold margin, wherein the adjustment provides an increase in spatial reuse of signal spectrum.
A wireless communication device providing resource management for increased spatial reuse in an ad-hoc wireless communication system, the wireless communication device comprising:
- a receiver including reservation request receiving means for receiving a request to reserve message from an external wireless communication device;
- signal quality determining means, for determining a signal quality value based on the received request to reserve message;
- response means providing, as a response, a transmission reservation confirm message which includes an assigned data rate;
- threshold determination means for determining a threshold margin of the signal value at the data rate;
- transmission adjustment means, for transmitting a reduction in power value for adjusting the power of the external wireless communication device based on a received power in accordance with the signal quality value and the threshold margin;
- and
- a transmitter for transmitting the reduction in power value, wherein the adjustment provides an increase in spatial reuse of signal spectrum.
A chipset including at least one semiconductor integrated circuit chip, for use in a wireless communication device, the chipset comprising:
- a circuit module capable of receiving communication signals from a plurality of external wireless communication devices (WCDs);
- a reservation request receiving circuit module capable of receiving a request to reserve message from an external wireless communication device;
- signal quality determination circuit module, the signal quality determination circuit module determining a signal quality value based on the received request to reserve message;
- a transmission reservation response circuit module capable of providing, as a response, a transmission reservation confirm message which, includes an assigned data rate;
- a threshold determination circuit module, which determines a threshold margin of the signal value at the data rate;
- a transmission adjustment circuit module, transmitting a reduction in power value for adjusting the power of the external wireless communication device based on a received power in accordance with the signal quality value and the threshold margin;
- and
- a transmitter, the transmitter transmitting the reduction in power value, wherein the adjustment provides an increase in spatial reuse of signal spectrum.
A storage medium for use in monitoring the operation of a wireless communication device, the storage medium comprising instructions when executed by a processing module, comprising:
- instructions for receiving a request to reserve message from an external wireless communication device;
- instructions for determining a signal quality value based on the received request to reserve message;
- instructions for providing, as a response, a transmission reservation confirm message which includes an assigned data rate;
- instructions for determining a threshold margin of the signal value at the data rate;
- and
- instructions for transmitting a reduction in power value for adjusting the power of the external wireless communication device based on a received power in accordance with the signal quality value and the threshold margin, wherein the adjustment provides an increase in spatial reuse of signal spectrum.
Dependencies are inferred from the claim text.