Incremental interference cancelation capability and signaling

Patent metadata

Field	Value
Publication number	US-9692539-B2
Application number	US-201213659633-A
Country	US
Kind code	B2
Filing date	Oct 24, 2012
Priority date	Nov 4, 2011
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

Incremental interference cancelation (IC) capability management and signaling is disclosed. A mobile device selects certain groups of its individual IC capabilities to deactivate in response to various operating conditions it is experiencing. The mobile device reports its currently active IC capability to a serving base station, which uses information to determine whether to modify any existing communication conditions with respect to the reporting mobile device. The base station detects and analyzes the current communication conditions with respect to the reporting mobile device in light of the mobile device's currently active IC capabilities. The base station may modify such conditions through actions such as signaling the mobile device to activate or deactivate certain other groups of IC capabilities. The base station can make other modifications such as changing the communication schedule for the mobile device, modifying the control loop for channel quality indicator (CQI) reporting, and the like.

First claim

What is claimed is:

1. A method of wireless communication, comprising:
determining, by a mobile device, operating conditions of the mobile device;
grouping a plurality of interference cancelation capabilities of the mobile device into a plurality of groups of interference cancelation capabilities, wherein each interference cancelation capability of the plurality of interference cancelation capabilities is included in at least one group of the plurality of groups, and wherein the grouping is based on a characteristic of each interference cancelation capability of the plurality of interference cancelation capabilities, such that each group of the plurality of groups represents a different characteristic of the interference cancelation capabilities;
deactivating, by the mobile device, one or more groups from the plurality of groups of interference cancelation capabilities; and
reporting, by the mobile device, a current interference cancelation capability to a base station, wherein the current interference cancelation capability comprises a set of active groups from the plurality of groups of interference cancelation capabilities remaining active after the deactivating.

2. The method of claim 1 , wherein the operating conditions comprise one or more of:
radio conditions surrounding the mobile device;
battery power level of the mobile device; and
power consumption rate of the mobile device.

3. The method of claim 1 , further comprising:
receiving a signal from the base station; and
wherein the deactivating includes deactivating the one or more groups from the plurality of groups of interference cancelation capabilities, in response to the signal.

4. The method of claim 1 , wherein the characteristic of the interference cancelation capabilities relates to interference cancelation for one or more of:
a common channel interference;
a control channel interference; and
a data channel interference.

5. The method of claim 4 , wherein:
the interference cancelation for the common channel interference includes interference cancelation for one or more of: primary synchronization signals (PSS), secondary synchronization signals (SSS), physical broadcast channel (PBCH), and common reference signals (CRS);
the interference cancelation for the control channel interference includes interference cancelation for one or more of: physical control format indicator channel (PCFICH), physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), physical downlink control channel (PDCCH), and enhanced PDCCH (ePDCCH); and
the interference cancelation for the data channel interference includes interference cancelation for physical downlink shared channel (PDSCH).

6. A method of wireless communication, comprising:
receiving, at a base station, a current interference cancelation capability report from a mobile device served by the base station;
determining communication conditions of the mobile device in relation to the base station; and
modifying the communication conditions based, at least in part, on the current interference cancelation capability report, including signaling the mobile device to deactivate one or more active groups of interference cancelation capabilities from a set of active groups of interference cancelation capabilities, wherein the one or more active groups of interference cancelation capabilities signaled for deactivation are determined based, at least in part, on the current interference cancelation capability report, and wherein the groups in the set of active groups are part of a plurality of groups of interference cancelation capabilities, wherein each interference cancelation capability of a plurality of interference cancelation capabilities of the mobile device is included in at least one group of the plurality of groups, and wherein the plurality of groups is grouped based on a characteristic of each interference cancelation capability of the plurality of interference cancelation capabilities of the mobile device, such that each group of the plurality of groups represents a different characteristic of the interference cancelation capabilities.

7. The method of claim 6 , wherein the current interference cancelation capability report includes the set of active groups of interference cancelation capabilities, and wherein the plurality of groups of interference cancelation capabilities is grouped by the mobile device.

8. The method of claim 7 , wherein modifying the communication conditions comprises:
scheduling the mobile device for transmission in one or more subframes determined, at least in part, on the current interference cancelation capability report.

9. The method of claim 7 , wherein modifying the communication conditions comprises:
adjusting a backoff loop of a channel quality indicator (CQI) process associated with the mobile device, the adjusting based, at least in part, on the current interference cancelation capability report.

10. An apparatus configured for wireless communication, comprising:
means for determining, by a mobile device, operating conditions of the mobile device;
means for grouping a plurality of interference cancelation capabilities of the mobile device into a plurality of groups of interference cancelation capabilities, wherein each interference cancelation capability of the plurality of interference cancelation capabilities is included in at least one group of the plurality of groups, wherein the grouping is based on a characteristic of each interference cancelation capability of the plurality of interference cancelation capabilities, such that each group of the plurality of groups represents a different characteristic of the interference cancelation capabilities;
means for deactivating, by the mobile device, one or more groups from the plurality of groups of interference cancelation capabilities; and
means for reporting, by the mobile device, a current interference cancelation capability to a base station, wherein the current interference cancelation capability c comprises a set of active groups from the plurality of groups of interference cancelation capabilities remaining active after execution of the means for deactivating.

11. The apparatus of claim 10 , wherein the operating conditions comprise one or more of:
radio conditions surrounding the mobile device;
battery power level of the mobile device; and
power consumption rate of the mobile device.

12. The apparatus of claim 10 , further comprising:
means for receiving a signal from the base station; and
wherein the means for deactivating includes means for deactivating the one or more groups from the plurality of groups of interference cancelation capabilities, in response to the signal.

13. The apparatus of claim 10 , wherein the characteristic of the interference cancelation capabilities relates to interference cancelation for one or more of:
a common channel interference;
a control channel interference; and
a data channel interference.

14. The apparatus of claim 13 , wherein:
the interference cancelation for the common channel interference includes interference cancelation for one or more of: primary synchronization signals (PSS), secondary synchronization signals (SSS), physical broadcast channel (PBCH), and common reference signals (CRS);
the interference cancelation for the control channel interference includes interference cancelation for one or more of: physical control format indicator channel (PCFICH), physical hybrid automatic repeat request (HARQ) indicator channel (PHICH), physical downlink control channel (PDCCH), and enhanced PDCCH (ePDCCH); and
the interference cancelation for the

Assignees

• Qualcomm Inc

Inventors

• Luo Tao
• Yoo Taesang
• Wei Yongbin

Classifications

• H04J11/0023 Primary

  Interference mitigation or co-ordination (direct sequence spread spectrum [DSSS] systems H04B1/7097; frequency hopping H04B1/713; allocation criteria for ingress interference avoidance H04L5/0062; frequency allocation criteria for requirements on out-of-channel emissions H04L5/0066; arrangements for removing intersymbol interference or baseband equalisers H04L25/03006; peak power aspects in multicarrier modulation H04L27/2614; power management H04W52/00; traffic scheduling H04W72/54, H04W72/541) · CPC title

• H04B2201/7071

  with dynamic control of receiver resources · CPC title

• H04B1/7103

  the interference being multiple access interference · CPC title