Sending feedback for multiple downlink carriers
First Claim
1. A method, comprising:
- determining a slot format for transmitting feedback information for a plurality of serving cells via high speed dedicated physical control channel (HS-DPCCH) based on a number of configured secondary serving cells and whether multiple input multiple-output (MIMO) is configured in the plurality of serving cells;
sending the feedback information in accordance with the determined slot format, wherein when the plurality of serving cells comprises a primary serving cell and two enabled secondary serving cells, and the two enabled secondary serving cells comprises an active secondary serving cell and a deactivated secondary serving cell, hybrid automatic repeat request (HARQ) feedback for the primary serving cell and HARQ feedback for the active secondary serving cell is jointly encoded to form a jointly coded HARQ feedback, wherein the jointly encoded HARQ feedback is sent in a first portion of a time slot allocated for HARQ feedback transmission, and the jointly encoded HARQ feedback is repeated in a second portion of the time slot allocated for HARQ feedback transmission.
1 Assignment
0 Petitions
Accused Products
Abstract
Feedback information for multiple serving cells are transmitted on high speed dedicated physical control channel (HS-DPCCH). A slot format for transmitting feedback information is determined based on the number of configured secondary serving cells and whether multiple input multiple-output (MIMO) is configured in the serving cells. Spreading factor is reduced to 128 when two secondary serving cells are configured and MIMO is configured in at least one of the two configured secondary serving cells, or when three secondary serving cells are configured. The serving cells are grouped into feedback groups, each feedback group having one or more serving cells. Channel coding may be applied to feedback information for the feedback groups. The resulting encoded feedback information for the feedback groups is concatenated to form composite feedback information.
-
Citations
38 Claims
-
1. A method, comprising:
-
determining a slot format for transmitting feedback information for a plurality of serving cells via high speed dedicated physical control channel (HS-DPCCH) based on a number of configured secondary serving cells and whether multiple input multiple-output (MIMO) is configured in the plurality of serving cells; sending the feedback information in accordance with the determined slot format, wherein when the plurality of serving cells comprises a primary serving cell and two enabled secondary serving cells, and the two enabled secondary serving cells comprises an active secondary serving cell and a deactivated secondary serving cell, hybrid automatic repeat request (HARQ) feedback for the primary serving cell and HARQ feedback for the active secondary serving cell is jointly encoded to form a jointly coded HARQ feedback, wherein the jointly encoded HARQ feedback is sent in a first portion of a time slot allocated for HARQ feedback transmission, and the jointly encoded HARQ feedback is repeated in a second portion of the time slot allocated for HARQ feedback transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A wireless transmit/receive unit (WTRU), the WTRU comprising:
-
a processor configured to; determine a slot format for transmitting feedback information for a plurality of serving cells via high speed dedicated physical control channel (HS-DPCCH) based on a number of configured secondary serving cells and whether multiple input multiple-output (MIMO) is configured in the plurality of serving cells; and send the feedback information in accordance with the determined slot format, wherein when the plurality of serving cells comprises a primary serving cell and two enabled secondary serving cells, and the two enabled secondary serving cells comprises an active secondary serving cell and a deactivated secondary serving cell, hybrid automatic repeat request (HARQ) feedback for the primary serving cell and HARQ feedback for the active secondary serving cell is jointly encoded to form a jointly coded HARQ feedback, the jointly encoded HARQ feedback is sent in a first portion of a time slot allocated for HARQ feedback transmission, and the jointly encoded HARQ feedback is repeated in a second portion of the time slot allocated for HARQ feedback transmission. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
-
Specification