Device-assisted interference management in heterogeneous wireless cellular systems
Devices and methods are provided for device-assisted interference management in heterogeneous wireless network environments. A mobile station (MS) assists a serving access point (AP) in assigning radio resources according to the interference management capabilities of the MS, the serving AP, and one or more neighboring interfering APs on the downlink, or alternatively, to one or more neighboring APs with interfering mobile stations on the uplink.
1. A mobile station (MS), comprising:
processing logic configured to manage interference of a transmission, the processing logic configured to be used by the MS to dynamically perform capability assessment operations to generate capability data associated with interference management capabilities of the MS, wherein the capability data is configured to be provided to a serving access point (AP) and one or more neighboring APs for an assignment of radio resources according to the interference management capabilities of the MS, the serving AP, and the one or more neighboring interfering APs, wherein the processing logic is further configured to be used by the MS to make a downlink radio resource selection recommendation according to whether one or more dominant interferers can be canceled or suppressed.
2. The mobile station (MS) of claim 1 , wherein residual inter-AP interference is minimized at the MS during a downlink (DL) transmission by accounting for a combination of a set of:
the interference management capabilities of the MS;
a capability of the serving AP to direct the transmission to the MS to mitigate the interference; and
a capability of the one or more neighboring interfering APs to direct the transmission to a second MS to mitigate interference at the MS, the second MS respectively served by the one or more neighboring interfering APs.
3. The mobile station (MS) of claim 2 , wherein the processing logic is further configured to be used by the MS to make a DL radio resource selection recommendation to the AP, the radio resource selection recommendation comprising one of:
applying DL multiple-input/multiple-output (MIMO) with all available receive antennas; and
applying DL MIMO with less than all available receive antennas.
4. The mobile station (MS) of claim 2 , wherein the processing logic is further configured to be used by the MS to select a subset of radio resources from a set of recommended radio resources contained in an advanced resource allocation (ARA) message provided by the serving AP, the selecting performed according to a DL channel quality the MS observes and the selection provided by the MS to the serving AP in an ARA response message.
5. The mobile station (MS) of claim 4 , wherein the processing logic is further configured to be used by the MS to communicate the ARA in an ARA notification message provided to a set of the one or more neighboring interfering APs, the MS is configured to append its preferred transmission configuration of the one or more neighboring interfering APs according to an ARA acknowledgement message received from the serving AP.
6. The mobile station (MS) of claim 5 , wherein the ARA acknowledgement message comprises an encrypted payload addressed to the neighboring APs.
7. The mobile station (MS) of claim 2 , wherein the processing logic is further configured to be used by the MS to configure a receiver of the MS according to a response received from the serving AP.
8. The mobile station (MS) of claim 2 , wherein the processing logic is further configured to be used by the MS to configure a receiver of the MS according to a response received from the one or more neighboring interfering APs.
9. The mobile station (MS) of claim 1 , wherein residual interference is minimized at a serving AP during an uplink (UL) transmission by accounting for a combination of a set of:
the interference management capabilities of the AP;
a capability of the MS to direct the transmission to its serving AP to mitigate the interference, the capability assessed dynamically by the MS; and
a capability of the one or more neighboring interfering APs to direct the transmission from a second MS to mitigate interference at the serving AP, the second MS respectively served by the one or more neighboring interfering APs.
10. The mobile station (MS) of claim 9 , wherein the processing logic is further configured to be used by the MS to make a UL radio resource selection recommendation according to the dynamic interference management capabilities of the MS and feedback received from the one or more neighboring interfering APs.
11. The mobile station (MS) of claim 9 , wherein the processing logic is further configured to be used by the MS to make a UL resource selection recommendation to the AP, the resource selection recommendation comprising one of:
applying UL multiple-input/multiple-output (MIMO) with all available transmit antennas; and
applying UL MIMO with less than all available transmit antennas.
12. The mobile station (MS) of claim 9 , wherein the processing logic is further configured to be used by the MS for sending an advance radio resource grant (ARG) notification message to the one or more neighboring interfering APs, wherein an identity of the one or more neighboring interfering APs is identified by the MS in the ARG notification message.
13. The mobile station (MS) of claim 12 , wherein the ARG notification message comprises capability data associated with the MS's interference management capabilities for each resource, wherein the capability data is included in the ARG notification message subsequent to the MS dynamically assessing its interference avoidance and transmission capabilities.
14. The mobile station (MS) of claim 13 , wherein the processing logic is further configured to be used by the MS for forwarding an ARG response acknowledgement (ACK) message from the one or more neighboring interfering APs to the serving AP.
15. The mobile station (MS) of claim 14 , wherein the processing logic is further configured to be used by the MS for adjusting its transmission to match with an ARG notification ACK message from the serving AP or when a predetermined time interval expires.
16. The mobile station (MS) of claim 1 , wherein the processing logic is further configured to be used by the MS for establishing a secure tunnel between the serving AP and the one or more neighboring interfering APs, the secure tunnel established via the MS.
17. The mobile station (MS) of claim 16 , wherein the secure tunnel is configured to be used by the serving AP to send authentication keys to the MS and the one or more neighboring interfering APs, the authentication keys used for subsequent attachment or authentication operations.
18. A method for managing interference of a transmission, comprising:
using processing logic of a mobile station (MS) to dynamically perform capability assessment operations to generate capability data associated with interference management capabilities of the MS; and
providing the capability data to a serving access point (AP) and one or more neighboring APs for an assignment of radio resources according to the interference management capabilities of the MS, the serving AP, and the one or more neighboring interfering APs,
wherein the processing logic is further configured to be used by the MS to make a downlink radio resource selection recommendation according to whether one or more dominant interferers can be canceled or suppressed.
19. The method of claim 18 , wherein residual inter-AP interference is minimized at the MS during a downlink (DL) transmission by accounting for a combination of a set of:
the interference management capabilities of the MS;
a capability of the serving AP to direct the transmission to the MS to mitigate the interference; and
a capability of the one or more neighboring interfering APs to direct the transmission to a second MS to mitigate interference at the MS, the second MS respectively served by the one or more neighboring interfering APs.