Support of UL ACK/NACK feedback for carrier aggregation during timing uncertainty component carrier (re-) configuration/activation/de-activation period
First Claim
Patent Images
1. An apparatus comprising:
- at least one processor configured to perform a component carrier configuration, reconfiguration, activation or de-activation; and
at least one memory including computer program code, said at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform the following;
detect a signaling format used for acknowledgment/negative acknowledgement messages on an uplink control channel; and
decide a codebook size of the acknowledgment/negative acknowledgement messages based on whether the detected signaling format is one based on PUCCH format 1b and channel selection, or another based on joint coding on top of PUCCH format 2 or PUSCH,wherein the codebook size is decided based on the maximum number of downlink component carriers when a channel selection is applied, andwherein the maximum number of downlink component carriers is defined based on a maximum number of downlink component carriers supported by the channel selection.
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Abstract
An apparatus and a method is described, by which a component carrier configuration, re-configuration, activation or de-activation is performed. In particular, a signaling format used for acknowledgment/negative acknowledgement messages on an uplink control channel is detected, and a codebook size of the acknowledgment/negative acknowledgement messages is decided based on the detected signaling format.
14 Citations
19 Claims
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1. An apparatus comprising:
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at least one processor configured to perform a component carrier configuration, reconfiguration, activation or de-activation; and at least one memory including computer program code, said at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus to perform the following; detect a signaling format used for acknowledgment/negative acknowledgement messages on an uplink control channel; and decide a codebook size of the acknowledgment/negative acknowledgement messages based on whether the detected signaling format is one based on PUCCH format 1b and channel selection, or another based on joint coding on top of PUCCH format 2 or PUSCH, wherein the codebook size is decided based on the maximum number of downlink component carriers when a channel selection is applied, and wherein the maximum number of downlink component carriers is defined based on a maximum number of downlink component carriers supported by the channel selection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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detecting a signaling format used for acknowledgment/negative acknowledgement messages on an uplink control channel; and deciding a codebook size of the acknowledgment/negative acknowledgement messages based on whether the detected signaling format is one based on PUCCH format 1b and channel selection, or another based on joint coding on top of PUCCH format 2 or PUSCH, wherein the method is for performing a component carrier configuration, reconfiguration, activation or de-activation, wherein the codebook size is decided based on the maximum number of downlink component carriers when a channel selection is applied, and wherein the maximum number of downlink component carriers is defined based on a maximum number of downlink component carriers supported by the channel selection. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A computer program product comprising a non-transitory computer-readable storage medium bearing computer program code embodied therein for use with a computer, the computer program code comprising code for performing a method including:
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detecting a signaling format used for acknowledgment/negative acknowledgement messages on an uplink control channel; and deciding a codebook size of the acknowledgment/negative acknowledgement messages based on whether the detected signaling format is one based on PUCCH format 1b and channel selection, or another based on joint coding on top of PUCCH format 2 or PUSCH, wherein the method is for performing a component carrier configuration, reconfiguration, activation or de-activation, wherein the codebook size is decided based on the maximum number of downlink component carriers when a channel selection is applied, and wherein the maximum number of downlink component carriers is defined based on a maximum number of downlink component carriers supported by the channel selection.
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Specification