Device-empowered radio resource assignment
View Patent ↗A system and method are provided for mitigating interference between wireless access points (APs). A user equipment (UE) device uses a first set of radio resources to wirelessly communicate with a first AP and a second set of radio resources to wirelessly communicate with a second AP. The UE device then uses the first and second radio resources to communicate cooperation data between the first and second access points to mitigate interference thereinbetween.
1. A system for managing radio resources to mitigate interference between wireless access points, the system comprising:
an access point, the access point being operable to communicate with a plurality of user equipment devices;
a first user equipment device, the first user equipment device communicating cooperation data to the access point, the cooperation data comprising channel conditions; and
a second user equipment device, the second user equipment device communicating cooperation data to the access point, the cooperation data comprising channel conditions
wherein the access point assigns radio resources to the first user equipment device and communicates transmission parameters of the assigned resources to avoid interference to the second user equipment device while serving the first user equipment device,
wherein a plurality of second user equipment devices communicate cooperation data to the access point, the cooperation data comprising channel conditions,
wherein the access point assigns radio resources to the first user equipment device and communicates transmission parameters of the assigned resources to avoid interference to individual second user equipment devices of the plurality of second user equipment devices while serving the first user equipment device, and
wherein the transmission parameters assigned by the access point comprise a weighted average of the cooperation data received from individual second user equipment devices of the plurality of the second user equipment devices and the channel conditions received from the first user equipment device.
2. The system of claim 1 , wherein the transmission parameters assigned by the access point comprise a multi-input multi-output (MIMO) transmission format based on a weighted average MIMO channel condition to the first user equipment device and the received MIMO channel conditions from the individual second user equipment devices of the plurality of the second user equipment devices.
3. The system of claim 1 , wherein the transmission parameters assigned by the access point comprise a transmission direction based on a weighted average of the direction to the first user equipment device and the direction from the individual second user equipment devices of the plurality of the second user equipment devices.
4. The system of claim 1 , wherein a proportion of the weights are related to a number of hybrid automatic repeat request (HARQ) retransmissions, and wherein the weight for the first user equipment device is increased with the number of HARQ retransmissions completed for a current transmission to the first user equipment device.
5. The system of claim 1 , wherein a proportion of the weights are related to a user equipment device buffer occupancy at the access point, wherein the weight for the first user equipment device is adjusted according to the occupancy of the user equipment buffer for the first user equipment device.
6. The system of claim 1 , wherein a proportion of the weights are related to an application associated with the first user equipment device, and wherein the weight for the first user equipment device is adjusted according to a time sensitivity of the application associated with the first user equipment device.
7. The system of claim 1 , wherein a proportion of the weights are related to a strength of interference of a transmission to the first user equipment device, and wherein the weight for the first user equipment device is adjusted according to a relative level of interference.
8. The system of claim 2 , wherein the transmission parameters assigned by the first access point are a MIMO transmission format or direction based on a weighted average of a direction to the first user equipment device and the MIMO transmission format or direction received from a composite of reference signals from the individual second user equipment devices of the plurality of the second user equipment devices.
9. A method for managing radio resources to mitigate interference between wireless access points comprising an access point, the access point being operable to communicate to a plurality of user equipment devices, the method comprising:
serving a first user equipment device by the access point;
communicating, via a second user equipment device, cooperation data to the access point, the cooperation data comprising channel conditions;
communicating, via the first user equipment device, cooperation data to the access point, the cooperation data comprising channel conditions;
communicating, via the access point, transmission parameters of assigned resources to avoid interference to the second user equipment device while serving the first user equipment device;
communicating, via a plurality of second user equipment devices, cooperation data to the access point, the cooperation data comprising channel conditions;
assigning, via the access point, radio resources to the first user equipment device; and
communicating, via the access point, transmission parameters of the assigned resources to avoid interference to individual second user equipment devices of the plurality of second user equipment devices while serving the first user equipment device,
wherein the transmission parameters assigned by the access point comprise a weighted average of the cooperation data received from individual second user equipment devices of the plurality of second user equipment devices and the channel conditions received from the first user equipment device.
10. The method of claim 9 , wherein the transmission parameters assigned by the access point comprise a multi-input multi-output (MIMO) transmission format based on a weighted average MIMO channel condition to the first user equipment device and the received MIMO channel conditions from the individual second user equipment devices of the plurality of the second user equipment devices.
11. The method of claim 9 , wherein the transmission parameters assigned by the access point comprise a transmission direction based on a weighted average of the direction to the first user equipment device and the direction from the individual second user equipment devices of the plurality of the second user equipment devices.
12. The method of claim 9 , wherein a proportion of the weights are related to a number of hybrid automatic repeat request (HARQ) retransmissions, and wherein the weight for the first user equipment device is increased with the number of HARQ retransmissions completed for a current transmission to the first user equipment device.
13. The method of claim 9 , wherein a proportion of the weights are related to a user equipment device buffer occupancy at the access point, wherein the weight for the first user equipment device is adjusted according to the occupancy of the user equipment buffer for the first user equipment device.
14. The method of claim 9 , wherein a proportion of the weights are related to an application associated with the first user equipment device, and wherein the weight for the first user equipment device is adjusted according to a time sensitivity of the application associated with the first user equipment device.
15. The method of claim 9 , wherein a proportion of the weights are related to a strength of interference of a transmission to the first user equipment device, and wherein the weight for the first user equipment device is adjusted according to a relative level of interference.
16. The method of claim 10 , wherein the transmission parameters assigned by the first access point are a MIMO transmission format or direction based on a weighted average of a direction to the first user equipment device and the MIMO transmission format or direction received from a composite of reference signals from the individual second user equipment devices of the plurality of the second user equipment devices.
17. At least one non-transitory computer readable medium storing a program that, when executed, performs the processor-implemented operations of:
serving a first user equipment device by an access point;
communicating, via a second user equipment device, cooperation data to the access point, the cooperation data comprising channel conditions;
communicating, via the first user equipment device, cooperation data to the access point, the cooperation data comprising channel conditions;
communicating, via the access point, transmission parameters of assigned resources to avoid interference to the second user equipment device while serving the first user equipment device;
communicating, via a plurality of second user equipment devices, cooperation data to the access point, the cooperation data comprising channel conditions;
assigning, via the access point, radio resources to the first user equipment device; and
communicating, via the access point, transmission parameters of the assigned resources to avoid interference to individual second user equipment devices of the plurality of second user equipment devices while serving the first user equipment device,
wherein the transmission parameters assigned by the access point comprise a weighted average of the cooperation data received from individual second user equipment devices of the plurality of second user equipment devices and the channel conditions received from the first user equipment device.
18. The at least one non-transitory computer readable medium of claim 17 , wherein the transmission parameters assigned by the access point comprise one or more of the following:
a multi-input multi-output (MIMO) transmission format based on a weighted average MIMO channel condition to the first user equipment device and the received MIMO channel conditions from the individual second user equipment devices of the plurality of the second user equipment devices; or
a transmission direction based on a weighted average of the direction to the first user equipment device and the direction from the individual second user equipment devices of the plurality of the second user equipment devices.
19. The at least one non-transitory computer readable medium of claim 17 , wherein a proportion of the weights are related to one or more of the following:
a number of hybrid automatic repeat request (HARQ) retransmissions, wherein the weight for the first user equipment device is increased with the number of HARQ retransmissions completed for a current transmission to the first user equipment device;
a user equipment device buffer occupancy at the access point, wherein the weight for the first user equipment device is adjusted according to the occupancy of the user equipment buffer for the first user equipment device;
an application associated with the first user equipment device, wherein the weight for the first user equipment device is adjusted according to a time sensitivity of the application associated with the first user equipment device; or
a strength of interference of a transmission to the first user equipment device, and wherein the weight for the first user equipment device is adjusted according to a relative level of interference.
20. The at least one non-transitory computer readable medium of claim 17 , wherein the transmission parameters assigned by the first access point are a multi-input multi-output (MIMO) transmission format or direction based on a weighted average of a direction to the first user equipment device and the MIMO transmission format or direction received from a composite of reference signals from the individual second user equipment devices of the plurality of the second user equipment devices.