Coexistence management in wireless communications
A method may include determining a set of parameters of a first wireless network that includes a first radio configured to communicate according to a first communication protocol on a plurality of overlapping channels. The method may also include determining one or more operating parameters of a second radio based on the set of parameters of the first wireless network, the second radio included in a second wireless network, co-located with the first radio, and configured to communicate according to a second communication protocol on the plurality of overlapping channels. The method may also include operating the second radio in the second wireless network according to the one or more operating parameters.
1. A method comprising:
determining a set of parameters of a first wireless network that includes a first radio configured to communicate according to a first communication protocol on a plurality of overlapping channels;
determining one or more operating parameters of a second radio based on the set of parameters of the first wireless network, the second radio included in a second wireless network, co-located with the first radio, and configured to communicate according to a second communication protocol on the plurality of overlapping channels; and
operating the second radio in the second wireless network according to the one or more operating parameters, wherein:
the set of parameters of the first wireless network comprises an expected start time of a next empty transmission slot in the first network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network includes a transmission schedule in the second wireless network that begins at the expected start time of the next empty transmission slot in the first wireless network; and
operating the second radio in the second wireless network according to the one or more operating parameters comprises operating the second radio to transmit data in the second wireless network according to the transmission schedule beginning at the expected start time of the next empty transmission slot in the first wireless network.
2. The method of claim 1 , wherein:
the set of parameters of the first wireless network further comprises channel quality and availability information of one or more channels sensed by the first radio;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes one or more of: a transmission power, a beamforming matrix, channel assignments of the plurality of overlapping channels on which to transmit or not transmit, aggregation level, duty cycle, or MCS; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio according to the one or more of: the transmission power, the beamforming matrix, or the channel assignments.
3. The method of claim 2 , where the channel quality and availability information of the first wireless network comprises at least one of clear channel assessment (CCA) or interference levels of the one or more sensed channels.
4. The method of claim 1 , wherein:
the set of parameters of the first wireless network further comprises a duration and timing of a transmit opportunity (TXOP) reserved by the first radio in the first network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a transmission schedule in the second wireless network during the TXOP; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to transmit data in the second wireless network according to the transmission schedule during the TXOP of the first wireless network.
5. The method of claim 4 , wherein operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to transmit the data in the second wireless network according to the transmission schedule during the TXOP of the first wireless network without performing channel access before transmitting the data.
6. The method of claim 1 , further comprising determining the expected start time of the next empty transmission slot as a sum of an expected end time of a current occupied transmission slot and at least one of: a distributed coordination function (DCF) interframe space (DIFS), an extended interframe space (EIFS), or a reduced interframe space (RIFS).
7. The method of claim 1 , wherein:
the set of parameters of the first wireless network further comprises an indication of an ongoing transmission in the first wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes an ongoing transmission interference flag; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to receive a request to send (RTS) message from an other radio in the second wireless network during ongoing transmission in the first wireless network and withhold transmission of a clear to send (CTS) message in the second wireless network in response to the RTS message for a duration of the ongoing transmission in the first wireless network.
8. The method of claim 1 , wherein:
the set of parameters of the first wireless network further comprises an indication of absence of detected motion in a location of the first wireless network, the first wireless network having less reach than the second wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a motion sensing inquiry flag; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to send a message to a remote wireless communication device through a remote second radio of the remote wireless communication device to turn on a remote first radio of the remote wireless communication device for motion detection in a location of a remote network that includes the remote first radio, the remote network having less reach than the second wireless network.
9. The method of claim 1 , wherein:
the set of parameters of the first wireless network further comprises a request from a remote first radio in the first wireless network to turn on the second radio for motion detection in the second wireless network, the second wireless network having less reach than the first wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a motion sensing flag; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to detect motion in the second wireless network.
10. The method of claim 1 , wherein:
the set of parameters of the first wireless network further comprises an indication of an ongoing transmission in the first wireless network from the first radio to a first wireless station and a location of the first wireless station;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a beamforming matrix to transmit a signal to a second wireless station in the second wireless network and to null the signal at the location of the first wireless station; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to transmit the signal to the second wireless station and null the signal at the location of the first wireless station.
11. A method comprising:
determining a set of parameters of a first wireless network that includes a first radio configured to communicate according to a first communication protocol on a plurality of overlapping channels;
determining one or more operating parameters of a second radio based on the set of parameters of the first wireless network, the second radio included in a second wireless network, co-located with the first radio, and configured to communicate according to a second communication protocol on the plurality of overlapping channels; and
operating the second radio in the second wireless network according to the one or more operating parameters, wherein:
the set of parameters of the first wireless network comprises traffic priority information that indicates first traffic to be sent in the first wireless network to or from the first radio has a first priority that is relatively high;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network includes a power save operating mode to avoid interference on the overlapping channels with the first traffic in the first wireless network; and
operating the second radio in the second wireless network according to the one or more operating parameters comprises operating the second radio in the power save operating mode.
12. The method of claim 11 , further comprising at least one of:
notifying client devices in the second wireless network that the second radio is operating in the power save operating mode so the client devices do not send traffic over the second wireless network while the second radio is in the power save operating mode;
receiving a side channel notification through a third radio of a third wireless network that indicates that a client device has second traffic to send to the second radio with a second priority that is higher than the first priority of the first traffic, the third radio configured to communicate according to a third communication protocol that is different than the first and second communication protocols; or
changing operation of the second radio in the second wireless network from the power save operating mode to a normal operating mode to receive the second traffic from the client device.
13. A wireless communication device, comprising:
a first radio configured to communicate in a first wireless network according to a first communication protocol on a plurality of overlapping channels;
a second radio co-located with the first radio and configured to communicate in a second wireless network according to a second communication protocol on the plurality of overlapping channels; and
a coexistence management circuit coupled to the first radio and the second radio, the coexistence management circuit configured to:
determine a set of parameters of the first wireless network;
determine one or more operating parameters of the second radio based on the set of parameters of the first wireless network; and
operate the second radio in the second wireless network according to the one or more operating parameters,
wherein:
the set of parameters of the first wireless network comprises an indication of an ongoing transmission in the first wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network includes an ongoing transmission interference flag; and
operating the second radio in the second wireless network according to the one or more operating parameters comprises operating the second radio to receive a request to send (RTS) message from an other radio in the second wireless network during ongoing transmission in the first wireless network and withhold transmission of a clear to send (CTS) message in the second wireless network in response to the RTS message for a duration of the ongoing transmission in the first wireless network.
14. The wireless communication device of claim 13 , wherein:
the set of parameters of the first wireless network further comprises channel quality and availability information of one or more channels sensed by the first radio;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes one or more of: a transmission power, a beamforming matrix, channel assignments of the plurality of overlapping channels on which to transmit or not transmit, aggregation level, duty cycle, or MCS; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio according to the one or more of: the transmission power, the beamforming matrix, or the channel assignments.
15. The wireless communication device of claim 13 , wherein:
the set of parameters of the first wireless network further comprises a duration and timing of a transmit opportunity (TXOP) reserved by the first radio in the first network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a transmission schedule in the second wireless network during the TXOP; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to transmit data in the second wireless network according to the transmission schedule during the TXOP of the first wireless network.
16. The wireless communication device of claim 13 , wherein:
the set of parameters of the first wireless network further comprises an expected start time of a next empty transmission slot in the first network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a transmission schedule in the second wireless network that begins at the expected start time of the next empty transmission slot in the first wireless network; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to transmit data in the second wireless network according to the transmission schedule beginning at the expected start time of the next empty transmission slot in the first wireless network.
17. The wireless communication device of claim 13 , wherein:
the set of parameters of the first wireless network further comprises a request from a remote first radio in the first wireless network to turn on the second radio for motion detection in the second wireless network, the second wireless network having less reach than the first wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a motion sensing flag; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to detect motion in the second wireless network.
18. The wireless communication device of claim 13 , wherein:
the set of parameters of the first wireless network further comprises an indication of an ongoing transmission in the first wireless network from the first radio to a first wireless station and a location of the first wireless station;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a beamforming matrix to transmit a signal to a second wireless station in the second wireless network and to null the signal at the location of the first wireless station; and
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio to transmit the signal to the second wireless station and null the signal at the location of the first wireless station.
19. The wireless communication device of claim 13 , further comprising a third radio co-located with the first and second radios and configured to communicate in a third wireless network according to a third communication protocol, wherein:
the coexistence management circuit is further coupled to the third radio,
the set of parameters of the first wireless network further comprises traffic priority information that indicates first traffic to be sent in the first wireless network to or from the first radio has a first priority that is relatively high;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network further includes a power save operating mode to avoid interference on the overlapping channels with the first traffic in the first wireless network;
operating the second radio in the second wireless network according to the one or more operating parameters further comprises operating the second radio in the power save operating mode; and
the coexistence management circuit is further configured to perform at least one of:
notify client devices in the second wireless network that the second radio is operating in the power save operating mode so the client devices do not send traffic over the second wireless network while the second radio is in the power save operating mode;
receive a side channel notification through the third radio of the third wireless network that indicates that a client device has second traffic to send to the second radio with a second priority that is higher than the first priority of the first traffic; or
change operation of the second radio in the second wireless network from the power save operating mode to a normal operating mode to receive the second traffic from the client device.
20. A wireless communication device, comprising:
a first radio configured to communicate in a first wireless network according to a first communication protocol on a plurality of overlapping channels;
a second radio co-located with the first radio and configured to communicate in a second wireless network according to a second communication protocol on the plurality of overlapping channels; and
a coexistence management circuit coupled to the first radio and the second radio, the coexistence management circuit configured to:
determine a set of parameters of the first wireless network;
determine one or more operating parameters of the second radio based on the set of parameters of the first wireless network; and
operate the second radio in the second wireless network according to the one or more operating parameters,
wherein:
the set of parameters of the first wireless network comprises an indication of absence of detected motion in a location of the first wireless network, the first wireless network having less reach than the second wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network includes a motion sensing inquiry flag; and
operating the second radio in the second wireless network according to the one or more operating parameters comprises operating the second radio to send a message to a remote wireless communication device through a remote second radio of the remote wireless communication device to turn on a remote first radio of the remote wireless communication device for motion detection in a location of a remote network that includes the remote first radio, the remote network having less reach than the second wireless network.
21. A non-transitory computer-readable storage medium having computer-readable instructions stored thereon that are executable by a processor device to perform or control performance of operations comprising:
determining a set of parameters of a first wireless network that includes a first radio configured to communicate according to a first communication protocol on a plurality of overlapping channels;
determining one or more operating parameters of a second radio based on the set of parameters of the first wireless network, the second radio included in a second wireless network, co-located with the first radio, and configured to communicate according to a second communication protocol on the plurality of overlapping channels; and
operating the second radio in the second wireless network according to the one or more operating parameters, wherein:
the set of parameters of the first wireless network comprises a request from a remote first radio in the first wireless network to turn on the second radio for motion detection in the second wireless network, the second wireless network having less reach than the first wireless network;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network includes a motion sensing flag; and
operating the second radio in the second wireless network according to the one or more operating parameters comprises operating the second radio to detect motion in the second wireless network.
22. A non-transitory computer-readable storage medium having computer-readable instructions stored thereon that are executable by a processor device to perform or control performance of operations comprising:
determining a set of parameters of a first wireless network that includes a first radio configured to communicate according to a first communication protocol on a plurality of overlapping channels;
determining one or more operating parameters of a second radio based on the set of parameters of the first wireless network, the second radio included in a second wireless network, co-located with the first radio, and configured to communicate according to a second communication protocol on the plurality of overlapping channels; and
operating the second radio in the second wireless network according to the one or more operating parameters, wherein:
the set of parameters of the first wireless network comprises an indication of an ongoing transmission in the first wireless network from the first radio to a first wireless station and a location of the first wireless station;
the one or more operating parameters of the second radio determined based on the set of parameters of the first wireless network includes a beamforming matrix to transmit a signal to a second wireless station in the second wireless network and to null the signal at the location of the first wireless station; and
operating the second radio in the second wireless network according to the one or more operating parameters comprises operating the second radio to transmit the signal to the second wireless station and null the signal at the location of the first wireless station.