Handling ambiguous relay physical downlink control channel (R-PDCCH) decoding for a relay node

An apparatus for wireless communications, comprising:

• means for determining a set of decoding candidates for each of a plurality of aggregation levels for control information transmission to a node;
• means for determining a set of ambiguous decoding candidates across the set of decoding candidates for each of the plurality of aggregation levels, wherein a first decoding candidate of aggregation level m is in the set of ambiguous decoding candidates if there is at least a second decoding candidate of aggregation level n, wherein m is not equal to n, which has a same starting control channel element (CCE) index as the first decoding candidate;
• means for transmitting control information to the node using the first decoding candidate;
• and
• means for assigning downlink (DL) resources for data transmission corresponding to the control information, wherein the assigned DL resources are based on the first decoding candidate and the set of ambiguous decoding candidates, wherein the first decoding candidate is fully contained in the assigned DL resources and at least a portion of the second decoding candidate is outside the assigned DL resources.

An apparatus for wireless communications, comprising:

• at least one processor configured to:
• determine a set of decoding candidates for each of a plurality of aggregation levels for control information transmission to a node;
• determine a set of ambiguous decoding candidates across the set of decoding candidates for each of the plurality of aggregation levels, wherein a first decoding candidate of aggregation level m is in the set of ambiguous decoding candidates if there is at least a second decoding candidate of aggregation level n, wherein m is not equal to n, which has a same starting control channel element (CCE) index as the first decoding candidate;
• transmit control information to the node using the first decoding candidate;
• and
• assign downlink (DL) resources for data transmission corresponding to the control information, wherein the assigned DL resources are based on the first decoding candidate and the set of ambiguous decoding candidates, wherein the first decoding candidate is fully contained in the assigned DL resources and at least a portion of the second decoding candidate is outside the assigned DL resources;
• and
• a memory coupled with the at least one processor.

A computer program product for wireless communications, comprising:

• a non-transitory computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
• determining a set of decoding candidates for each of a plurality of aggregation levels for control information transmission to a node;
• determining a set of ambiguous decoding candidates across the set of decoding candidates for each of the plurality of aggregation levels, wherein a first decoding candidate of aggregation level m is in the set of ambiguous decoding candidates if there is at least a second decoding candidate of aggregation level n, wherein m is not equal to n, which has a same starting control channel element (CCE) index as the first decoding candidate;
• transmitting control information to the node using the first decoding candidate;
• and
• assigning downlink (DL) resources for data transmission corresponding to the control information, wherein the assigned DL resources are based on the first decoding candidate and the set of ambiguous decoding candidates, wherein the first decoding candidate is fully contained in the assigned DL resources and at least a portion of the second decoding candidate is outside the assigned DL resources.

An apparatus for wireless communications, comprising:

• at least one processor configured to:
• decode, at a node, control information using a first decoding candidate of aggregation level m;
• and
• accept an assignment of downlink (DL) resources for data transmission corresponding to the control information, wherein the assignment of DL resources are based on the first decoding candidate and a set of ambiguous decoding candidates, wherein the first decoding candidate is in the set of ambiguous decoding candidates if there is at least a second decoding candidate of aggregation level n, wherein m is not equal to n, which has a same starting control channel element (CCE) index as the first decoding candidate, wherein the first decoding candidate is fully contained in the assignment of DL resources and at least a portion of the second decoding candidate is outside the assignment of DL resources;
• and
• a memory coupled with the at least one processor.

A computer program product for wireless communications, comprising:

• a non-transitory computer readable medium having instructions stored thereon, the instructions executable by one or more processors for:
• decoding, at a node, control information using a first decoding candidate of aggregation level m;
• and
• accepting an assignment of downlink (DL) resources for data transmission corresponding to the control information, wherein the assignment of DL resources are based on the first decoding candidate and a set of ambiguous decoding candidates, wherein the first decoding candidate is in the set of ambiguous decoding candidates if there is at least a second decoding candidate of aggregation level n, wherein m is not equal to n, which has a same starting control channel element (CCE) index as the first decoding candidate, wherein the first decoding candidate is fully contained in the assignment of DL resources and at least a portion of the second decoding candidate is outside the assignment of DL resources.