Multimode wireless systems and methods
The present disclosure includes systems and methods for operating a wireless communication system in multiple modes. The system is configured in a first mode when a transmission interference in a receiver of a wireless device is below a first threshold. The system is configured in one or more intermediate modes when the transmission interference is above the first threshold and below a second threshold. The system is configured in a second mode when the transmission interference is above the second threshold. The one or more intermediate modes activate interference management processes and the wireless device transmits data and receives data simultaneously. In some embodiments, transmission interference may be based on an SINR measurement.
1. A method comprising:
configuring a wireless device to operate in a first mode when a transmission interference from a transmitter of the wireless device in a receiver of the wireless device is below a first threshold, wherein in the first mode the wireless device transmits data and receives data simultaneously;
configuring the wireless device to operate in a plurality of intermediate modes when the transmission interference is above the first threshold and below a second threshold, wherein in the plurality of intermediate modes the wireless device transmits data and receives data simultaneously and activates one or more interference management processes, wherein the plurality of intermediate modes comprise:
a first intermediate mode, wherein in the first intermediate mode a first interference management process is activated, the first interference management process comprising a non-linear interference cancellation process;
a second intermediate mode, wherein in the second intermediate mode a second interference management process is activated, the second interference management process comprising reducing a maximum transmit power; and
a third intermediate mode, wherein in the third intermediate mode a third interference management process is activated, the third interference management process comprising modifying a transmission from the wireless device to re-assign transmit frequency allocations to increase a frequency separation between a transmission band and a receive band; and
configuring the wireless device to operate in a second mode when the transmission interference is above the second threshold, wherein in the second mode the wireless device transmits data and receives data during different time periods.
2. The method of claim 1 wherein different interference management processes are activated in different intermediate modes based on the transmission interference.
3. The method of claim 1 wherein, in the second intermediate mode, the maximum transmit power is reduced as the transmission interference increases.
4. The method of claim 3 , the second intermediate mode further comprising:
determining a first interference when the wireless device is not transmitting;
determining the transmission interference when the wireless device is transmitting; and
adjusting the maximum transmit power based on a different between the first interference and the transmission interference.
5. The method of claim 4 wherein a first maximum transmit power during a first time period is reduced to a second maximum transmit power during a second time period based on a difference between the first interference and the transmission interference.
6. The method of claim 3 wherein the maximum transmit power is reduced by not more than a maximum transmit power reduction corresponding to particular increase in throughput loss.
7. The method of claim 3 further comprising:
determining the transmission interference when the wireless device is transmitting; and
activating said interference management process reducing the maximum transmit power when a difference between the transmission interference and a minimum transmission interference below which there is no data rate improvement is greater than a third threshold.
8. The method of claim 3 further comprising sending a maximum transmit power reduction from the wireless device to a base station to coordinate a data rate from the wireless device to the base station.
9. The method of claim 1 wherein modifying the transmission from the wireless device to increase the frequency separation between the transmission band and the receive band comprises narrow-banding the transmission.
10. The method of claim 1 wherein modifying the transmission from the wireless device to increase the frequency separation between the transmission band and the receive band comprises deactivating resource blocks proximate to the receive band of the wireless device.
11. The method of claim 10 wherein modifying the transmission further comprises adaptively filtering the transmission from the wireless device to attenuate resource blocks proximate to the receive band of the wireless device and to reduce a total transmit power.
12. The method of claim 10 wherein modifying the transmission further comprises sending one or more messages between the wireless device and a base station to deactivate said resource blocks proximate to a receive band of the wireless device.
13. The method of claim 1 wherein a plurality of the interference management processes are activated at the same time.
14. The method of claim 1 wherein one or more interference management processes are deactivated when one or more other interference processes are activated.
15. The method of claim 1 wherein the wireless device transmits a request to switch from at least one of the intermediate modes to the second mode when a maximum transmit power is reduced to a usable minimum and when a maximum number of resource blocks comprising transmission frequencies proximate to a receive band have been restricted from use in a transmission.
16. The method of claim 1 further comprising dynamically filtering a received RF signal between an antenna and a low noise amplifier in the first mode and the one or more intermediate modes, and bypassing said dynamic filtering in the second mode.
17. The method of claim 1 wherein the first mode and the intermediate modes are full duplex modes and the second mode is a half duplex mode.
18. The method of claim 1 wherein said transmission interference corresponds to a signal-to-interference ratio (SINR).
19. The method of claim 1 wherein said transmission interference corresponds to a data throughput.
20. The method of claim 1 wherein the wireless device is configured to transmit and receive a plurality of bands, wherein a first subset of the plurality of bands are home network bands and the wireless device operates in full duplex mode using dedicated wireless transmitters and wireless receivers for each home network band, and wherein a second subset of bands are secondary bands and the wireless device is configured to operate in said first mode, said intermediate modes, and said second mode using a tunable wireless transmitter and wireless receiver for the secondary bands.
21. The method of claim 20 wherein the secondary bands are roaming bands.
22. An apparatus comprising:
a wireless device comprising a wireless transmitter and a wireless receiver,
wherein the wireless device is configured to operate in a first mode when a transmission interference from the transmitter in the receiver is below a first threshold, wherein in the first mode the wireless device transmits data and receives data simultaneously;
wherein the wireless device is configured to operate in a plurality of intermediate modes when the transmission interference is above the first threshold and below a second threshold, wherein in the plurality of intermediate modes the wireless device transmits data and receives data simultaneously and activates one or more interference management processes, wherein the plurality of intermediate modes comprise:
a first intermediate mode, wherein in the first intermediate mode a first interference management process is activated, the first interference management process comprising a non-linear interference cancellation process;
a second intermediate mode, wherein in the second intermediate mode a second interference management process is activated, the second interference management process comprising reducing a maximum transmit power; and
a third intermediate mode, wherein in the third intermediate mode a third interference management process is activated, the third interference management process comprising modifying a transmission from the wireless device to re-assign transmit frequency allocations to increase a frequency separation between a transmission band and a receive band; and
wherein the wireless device is configured to operate in a second mode when the transmission interference is above the second threshold, wherein in the second mode the wireless device transmits data and receives data during different time periods.
23. The apparatus of claim 22 wherein the receiver comprises:
a low noise amplifier; and
a tunable filter between the low noise amplifier and an antenna, the tunable filter configured to reduce a transmit power and transmission interference from the transmitter.
24. The apparatus of claim 22 wherein the wireless transmitter and wireless receiver are tunable, the wireless device further comprising a plurality of dedicated wireless transmitters and wireless receivers, wherein the wireless device is configured to transmit and receive a plurality of bands, wherein a first subset of the plurality of bands are home network bands and the wireless device operates in full duplex mode using said dedicated wireless transmitters and wireless receivers for each home network band, and wherein a second subset of the plurality of bands are secondary bands and the wireless device is configured to operate in said first mode, said intermediate modes, and said second mode using said tunable wireless transmitter and wireless receiver for the secondary bands.