Systems and/or methods providing ePDCCH in a multiple carrier based and/or quasi-collated network
First Claim
1. A method implemented by a wireless transmit/receive unit (WTRU) for utilizing an enhanced physical downlink control channel (ePDCCH), the method comprising:
- the WTRU receiving a configuration, the configuration (i) defining a plurality of ePDCCH resource sets;
(ii) defining a demodulation reference signal (DM-RS) scrambling sequence initialization parameter for each of the plurality of ePDCCH resource sets, and (iii) indicating a demodulation timing reference information associated with each of the plurality of ePDCCH resource sets;
the WTRU monitoring at least one search space associated with each of the plurality of ePDCCH resource sets, wherein the at least one search space excludes time and frequency resources occupied by DM-RSs of DM-RS sequences initialized with the DM-RS scrambling sequence initialization parameters for the corresponding ePDCCH resource sets; and
the WTRU receiving at least one ePDCCH transmission via at least one of the plurality of ePDCCH resource sets.
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Abstract
ePDCCH may be provided. For example, a WTRU may receive a configuration for monitoring an ePDCCH resource. Based on the configuration, the WTRU may be configured to monitor and may monitor the ePDCCH resource on a particular subframe. Additionally, a WTRU may derive an aggregation level for a subframe associated with an aggregation level number NAL. The WTRU may transmit or monitor an ePDCCH using the aggregation level associated with the NAL for the subframe. A WTRU may also receive a reference signal. The WTRU may then determine the type of reference signal received. The WTRU may perform a demodulation of the PDSCH or ePDCCH using a demodulation timing based on the determined type. The ePDCCH or PDSCH may also be monitored or received by identifying a demodulation reference timing implicitly based on a location of one or more ePDCCH resources where the WTRU may receive DCI.
29 Citations
14 Claims
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1. A method implemented by a wireless transmit/receive unit (WTRU) for utilizing an enhanced physical downlink control channel (ePDCCH), the method comprising:
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the WTRU receiving a configuration, the configuration (i) defining a plurality of ePDCCH resource sets;
(ii) defining a demodulation reference signal (DM-RS) scrambling sequence initialization parameter for each of the plurality of ePDCCH resource sets, and (iii) indicating a demodulation timing reference information associated with each of the plurality of ePDCCH resource sets;the WTRU monitoring at least one search space associated with each of the plurality of ePDCCH resource sets, wherein the at least one search space excludes time and frequency resources occupied by DM-RSs of DM-RS sequences initialized with the DM-RS scrambling sequence initialization parameters for the corresponding ePDCCH resource sets; and the WTRU receiving at least one ePDCCH transmission via at least one of the plurality of ePDCCH resource sets. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to; receive a configuration, the configuration (i) defining a plurality of enhanced physical downlink control channel (ePDCCH) resource sets;
(ii) defining a demodulation reference signal (DM-RS) scrambling sequence initialization parameter for each of the plurality of ePDCCH resource sets; and
(iii) indicating demodulation timing reference information associated with each of the plurality of ePDCCH resource sets;monitor at least one search space associated with each of the plurality of ePDCCH resource sets, wherein the at least one search space excludes time and frequency resources occupied by DM-RSs of DM-RS sequences initialized with the DM-RS scrambling sequence initialization parameters for the corresponding ePDCCH resource sets; and receive at least one ePDCCH transmission via at least one of the plurality of ePDCCH resource sets. - View Dependent Claims (9, 10, 11, 12, 13, 14)
Specification