METHOD AND APPARATUS FOR ALLOCATING RESOURCES FOR AN ENHANCED PHYSICAL HYBRID AUTOMATIC REPEAT REQUEST INDICATOR CHANNEL
First Claim
1. A method of allocating resources for an enhanced physical hybrid automatic repeat request (HARQ) channel (E-PHICH), the method comprising:
- allocating a subset of an enhanced physical downlink control channel (E-PDCCH) for use by the E-PHICH, wherein the E-PDCCH is defined by at least one of enhanced resource element groups (eREGs) and enhanced control channel elements (eCCEs), each eCCE is formed by grouping a plurality of eREGs, and each eREG containing at least one resource element (RE).
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Abstract
A method and apparatus are described for allocating resources for an enhanced physical hybrid automatic repeat request (HARQ) channel (E-PHICH). A subset of an enhanced physical downlink control channel (E-PDCCH) may be allocated for use by the E-PHICH. The E-PDCCH may be defined by at least one of enhanced resource element groups (eREGs) and enhanced control channel elements (eCCEs). Each eCCE may be formed by grouping a plurality of eREGs. Each eREG may contain at least one resource element (RE). Alternatively, a subset of eREGs may be allocated as E-PHICH resources. E-PDCCH physical resource block (PRB) pairs may be selected as a resource for the E-PHICH. An indication of the number of the eCCEs may be broadcast to a wireless transmit/receive unit (WTRU).
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Citations
18 Claims
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1. A method of allocating resources for an enhanced physical hybrid automatic repeat request (HARQ) channel (E-PHICH), the method comprising:
allocating a subset of an enhanced physical downlink control channel (E-PDCCH) for use by the E-PHICH, wherein the E-PDCCH is defined by at least one of enhanced resource element groups (eREGs) and enhanced control channel elements (eCCEs), each eCCE is formed by grouping a plurality of eREGs, and each eREG containing at least one resource element (RE). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of allocating resources for an enhanced physical hybrid automatic repeat request (HARQ) channel (E-PHICH), the method comprising:
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allocating a subset of an enhanced physical downlink control channel (E-PDCCH) for use by the E-PHICH; and selecting E-PDCCH physical resource block (PRB) pairs as a resource for the E-PHICH, wherein a number of the E-PDCCH PRB pairs are allocated in a subframe and a subset of the number of the E-PDCCH PRB pairs are allocated for use by the E-PHICH. - View Dependent Claims (13, 14)
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15. A wireless transmit/receive unit (WTRU) comprising:
a receiver configured to receive an enhanced physical hybrid automatic repeat request (HARQ) channel (E-PHICH), wherein a subset of an enhanced physical downlink control channel (E-PDCCH) is allocated for use by the E-PHICH, the E-PDCCH is defined by at least one of enhanced resource element groups (eREGs) and enhanced control channel elements (eCCEs), and each eCCE is formed by grouping a plurality of eREGs, each eREG containing at least one resource element (RE). - View Dependent Claims (16, 17, 18)
Specification