Multi-radio coexistence signaling
View Patent ↗A method and apparatus relate to coexistence of multiple RF subsystems on a communication device. An apparatus may include a plurality of radio frequency (RF) subsystems configured to receive or transmit communication signals; and an interface for communication between a first RF subsystem of the plurality of RF subsystems and at least a second RF subsystem of the plurality of subsystems. The first RF subsystem can be configured to generate a timing offset for a coexistence signal, the timing offset being indicative of a difference between a time of generation of a signal and the time of an event associated with the signal. The timing offset can comprise a fixed offset generated based on at least one of a reference time from a periodic interrupt or direct access of a timer; and an offset adjustment based on a distance between the apparatus and a base station associated with the first RF subsystem.
1. An apparatus, comprising:
a plurality of radio frequency (RF) subsystems configured to receive or transmit communication signals; and
an interface for communication between a first RF subsystem of the plurality of RF subsystems and a second RF subsystem of the plurality of subsystems;
wherein the first RF subsystem is configured to generate a timing offset for a coexistence signal, the timing offset being indicative of a difference between a time of generation of a signal and the time of an event associated with the signal, wherein the timing offset comprises:
an offset adjustment based on a distance between the apparatus and a base station associated with the first RF subsystem.
2. The apparatus of claim 1 , wherein the first RF subsystem is a Mobile Wireless Standards (MWS) subsystem.
3. The apparatus of claim 1 , wherein the second RF subsystem is one of a wideband local area network (WLAN) subsystem or a Bluetooth subsystem.
4. The apparatus of claim 1 , wherein the coexistence signal is associated with one of a transmission by the first RF subsystem, a reception by the first RF subsystem, or a frame synchronization for a reception or transmission by the second RF subsystem.
5. The apparatus of claim 4 , wherein the coexistence signal indicates an assertion of priority by one of the plurality of RF subsystems.
6. The apparatus of claim 1 , further comprising a fine resolution timer, the timer being associated with the periodic interrupt.
7. The apparatus of claim 1 , wherein the timing offset further includes an estimated jitter based on a processing time or a processing delay.
8. The apparatus of claim 1 , wherein the timing offset further comprises:
a first offset independent at least of a location of the apparatus.
9. The apparatus of claim 8 , wherein the first RF subsystem is configured to generate the first offset by accessing signaling configuration information.
10. The apparatus of claim 8 , wherein the first offset is generated based on at least one of a reference time from a periodic interrupt or direct access of a timer.
11. The apparatus of claim 8 , wherein the first offset is a fixed offset.
12. A method, comprising:
generating a timing offset for a coexistence signal, the timing offset being indicative of a difference between a time of generation of a signal and the time of an event associated with the signal,
the timing offset comprising an offset adjustment based on a distance between a present location and a base station; and
determining a signal generation time based at least in part on the offset adjustment.
13. The method of claim 12 , wherein the base station is associated with a Mobile Wireless Standards (MWS) subsystem.
14. The method of claim 12 , wherein the coexistence signal is associated with one of a transmission by a first RF subsystem, a reception by the first RF subsystem, or a frame synchronization for a reception or transmission by a second RF subsystem.
15. The method of claim 12 , wherein the coexistence signal indicates an assertion of priority by one of a plurality of RF subsystems.
16. The method of claim 12 , wherein the periodic interrupt is based on a fine resolution timer.
17. The method of claim 12 , wherein the timing offset further comprises a first offset based on at least one of a reference time from a periodic interrupt or a direct access of a timer.
18. The method of claim 17 , wherein the first offset is generated by accessing signaling configuration information.
19. The method of claim 17 , wherein the first offset is a fixed offset.
20. A computer program product, embodied on a non-transitory computer-readable medium, comprising:
computer code for generating a timing offset for a coexistence signal, the timing offset being indicative of a difference between a time of generation of a signal and the time of an event associated with the signal,
wherein the timing offset comprises an offset adjustment based on a distance between a present location and a base station; and
computer code for determining a signal generation time based at least in part on the offset adjustment.
21. The computer program product of claim 20 , wherein the base station is associated with a Mobile Wireless Standards (MWS) subsystem.
22. The computer program product of claim 20 , wherein the coexistence signal is associated with one of a transmission by a first RF subsystem, a reception by the first RF subsystem, or a frame synchronization for a reception or transmission by a second RF subsystem.
23. The computer program product of claim 20 , wherein the coexistence signal indicates an assertion of priority by one of a plurality of RF subsystems.
24. The computer program product of claim 20 , wherein the timing offset further comprises a first offset based on at least one of a reference time from a periodic interrupt or a direct access of a timer.
25. The computer program product of claim 24 , wherein the first offset is generated by accessing signaling configuration information.
26. The computer program product of claim 24 , wherein the first offset is a fixed offset.