Method and apparatus for allocating resources for an enhanced physical hybrid automatic repeat request indicator channel

摘要

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).

主权项

1. A method of allocating resources for an enhanced physical hybrid automatic repeat request (HARQ) channel (E-PHICH), the method comprising:
allocating a set of enhanced control channel elements (eCCEs) in a subframe as enhanced physical downlink control channel (E-PDCCH) resources, wherein the set of eCCEs includes a first integer number, N, of eCCEs, and wherein each of the eCCEs in the set includes a plurality of enhanced resource element groups (eREGs), and each of the plurality of eREGs includes at least one resource element (RE); allocating, for use by the E-PHICH, a subset of the set of eCCEs that is allocated as E-PDCCH resources, wherein the subset of the set of eCCEs includes a second integer number, M, of eCCEs that is less than N; and broadcasting an indication of the integer number M of eCCEs in the subset that is allocated for use by the E-PHICH to a wireless transmit/receive unit (WTRU) in one of a master information block (MIB) or a system information block (SIB).