Fallback operation for cross-carrier signaling in multi-carrier operation
First Claim
1. A method of wireless communication, comprising:
- monitoring, at a user equipment (UE), downlink control information (DCI) from a first carrier received by the UE, the monitoring being based on at least one first DCI format;
receiving, at the UE, a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling;
monitoring for the at least one first DCI format and for at least one second DCI format indicated by the reconfiguration message, after receiving the reconfiguration message, to detect DCI sent to the UE, wherein the monitoring for the at least one first DCI format and the at least one second DCI format comprises;
decoding a first set of downlink control channel element candidates for the UE on the first carrier for the at least one first DCI format, anddecoding a second set of downlink control channel element candidates for the UE on a second carrier for the at least one second DCI format.
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Accused Products
Abstract
Techniques for supporting fallback operation in a multi-carrier communication system are described. In one aspect, a UE may determine at least one first downlink control information (DCI) format to monitor on a first carrier. The UE may monitor for the first DCI format(s) on the first carrier to detect DCI sent to the UE. The UE may receive a reconfiguration message related to communication on a plurality of carriers by the UE with cross-carrier signaling, and may determine at least one second DCI format to monitor on the first carrier based on the reconfiguration message. The UE may monitor for the first DCI format(s) and the second DCI format(s) on the first carrier after receiving the reconfiguration message.
41 Citations
49 Claims
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1. A method of wireless communication, comprising:
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monitoring, at a user equipment (UE), downlink control information (DCI) from a first carrier received by the UE, the monitoring being based on at least one first DCI format; receiving, at the UE, a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling; monitoring for the at least one first DCI format and for at least one second DCI format indicated by the reconfiguration message, after receiving the reconfiguration message, to detect DCI sent to the UE, wherein the monitoring for the at least one first DCI format and the at least one second DCI format comprises; decoding a first set of downlink control channel element candidates for the UE on the first carrier for the at least one first DCI format, and decoding a second set of downlink control channel element candidates for the UE on a second carrier for the at least one second DCI format. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for wireless communication, comprising:
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means for monitoring, at a user equipment (UE), downlink control information (DCI) from a first carrier received by the UE, the monitoring being based on at least one first DCI format; means for receiving, at the UE, a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling; and means for monitoring for the at least one first DCI format and for at least one second DCI format indicated by the reconfiguration message, after receiving the reconfiguration message, to detect DCI sent to the UE, wherein the means for monitoring for the at least one first DCI format and the at least one second DCI format comprises; means for decoding a first set of downlink control channel element candidates on the first carrier for the at least one first DCI format, and means for decoding a second set of downlink control channel element candidates on a second carrier for the at least one second DCI format. - View Dependent Claims (22, 23, 24)
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25. An apparatus for wireless communication, comprising:
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at least one processor of a user equipment (UE) configured to; monitor downlink control information (DCI) from a first carrier received by the UE, based on at least one first DCI format, receive, at the UE, a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling, and monitor for the at least one first DCI format and for at least one second DCI format indicated by the reconfiguration message, after receiving the reconfiguration message, to detect DCI sent to the UE; and a memory coupled to the at least one processor, wherein the at least one processor is further configured to decode a first set of downlink control channel element candidates on the first carrier for the at least one first DCI format, and to decode a second set of downlink control channel element candidates on a second carrier for the at least one second DCI format. - View Dependent Claims (26, 27, 28)
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29. A computer program product, comprising:
a non-transitory computer-readable medium comprising; code for causing at least one computer of a user equipment (UE) to monitor downlink control information (DCI) from a first carrier received by the UE, based on at least one first DCI format, code for causing the at least one computer to receive at the UE a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling, code for causing the at least one computer of the UE to monitor for the at least one first DCI format and for at least one second DCI format indicated by the reconfiguration message, after receiving the reconfiguration message, to detect DCI sent to the UE, wherein the code for causing the at least one computer of the UE to monitor for the at least one first DCI format and the at least one second DCI format comprises; code for causing the at least one computer of the UE to decode a first set of downlink control channel element candidates on the first carrier for the at least one first DCI format, and code for causing the at least one computer of the UE to decode a second set of downlink control channel element candidates on the second carrier for the at least one second DCI format.
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30. A method of wireless communication, comprising:
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sending downlink control information (DCI) on a first carrier to a user equipment (UE), the sending being based on at least one first DCI format; sending to the UE a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling; and sending DCI on the first carrier and on a second carrier to the UE, based on the at least one first DCI format and at least one second DCI format, after sending the reconfiguration message, wherein the sending DCI on the first carrier and on the second carrier to the UE based on the at least one first DCI format and the at least one second DCI format comprises; sending DCI based on the at least one first DCI format in a first set of downlink control channel elements for the UE on the first carrier, and sending DCI based on the at least one second DCI format in a second set of downlink control channel elements for the UE on the second carrier. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. An apparatus for wireless communication, comprising:
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means for sending downlink control information (DCI) on a first carrier to a user equipment (UE) based on at least one first DCI format; means for sending to the UE a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling; means for sending to the UE, after sending the reconfiguration message, DCI on the first carrier based on the at least one first DCI format and on a second carrier based on at least one second DCI format, wherein the means for sending DCI on the first carrier to the UE based on the at least one first DCI format and on the second carrier based on the at least one second DCI format comprises; means for sending DCI based on the at least one first DCI format in a first set of downlink control channel elements for the UE on the first carrier, and means for sending DCI based on the at least one second DCI format in a second set of downlink control channel elements for the UE on the second carrier. - View Dependent Claims (44, 45)
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46. The apparatus of claim , wherein the at least one first DCI format and the at least one second DCI format are of different sizes.
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47. An apparatus for wireless communication, comprising:
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at least one processor configured to; send downlink control information (DCI) on a first carrier to a user equipment (UE), based on at least one first DCI format, send to the UE a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling, and send to the UE, after sending the reconfiguration message, DCI on the first carrier based on the at least one first DCI format and on at least one second carrier based on at least one second DCI format, the sending including sending a first set of downlink control channel elements of the first carrier based on the at least one first DCI format and sending a second set of downlink control channel elements of the second carrier based on the at least one second DCI format; and a memory coupled to the at least one processor. - View Dependent Claims (48)
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49. A computer program product, comprising:
a non-transitory computer-readable medium comprising; code for causing the at least one computer to send downlink control information (DCI) on a first carrier to a user equipment (UE), based on at least one first DCI format, code for causing the at least one computer to send to the UE a reconfiguration message indicating a transition between downlink control signaling without cross-carrier signaling and downlink control signaling with cross-carrier signaling, and code for causing the at least one computer to send to the UE, after sending the reconfiguration message, DCI on the first carrier based on the at least one first DCI format and on at least one second carrier based on at least one second DCI format, the sending including sending a first set of downlink control channel elements of the first carrier based on the at least one first DCI format and sending a second set of downlink control channel elements of the second carrier based on the at least one second DCI format.
Specification