Variable control channel for a wireless communication system

摘要

Techniques for sending control information on a variable control channel are described. Different structures for mapping control information to control channel resources may be used depending on various factors such as operating configuration, the available resources for the control channel, the type(s) of control information being sent, the amount of control information being sent for each type, whether or not data is being sent, etc. In one design, at least one type of control information being sent may be determined and may comprise channel quality indicator (CQI) information, acknowledgement (ACK) information, and/or other types of control information. A structure of the control channel may be determined based on operating configuration (e.g., system configuration such as asymmetry of downlink and uplink allocations) and/or other factors. The at least one type of control information may be mapped to the resources for the control channel based on the structure.

主权项

1. An apparatus comprising:
at least one processor configured to: determine at least one type of control information being sent for a subframe of a plurality of subframes, to determine a structure of a control channel for the subframe, the structure defining how each type of control information is mapped to a set of virtual frequency resources for the subframe,
wherein the set of virtual frequency resources spans a predetermined number M of contiguous subcarriers of an uplink carrier comprising N total subcarriers, where M is less than N,wherein the structure is selected from a plurality of structures according to the at least one type of control information, andwherein each of the plurality of structures maps one or more types of control information to the set of virtual frequency resources for the subframe; map each of the at least one type of control information to a designated portion of the set of virtual frequency resources for the subframe for the control channel based on the structure; and map the set of virtual frequency resources of the control channel to physical resources of an uplink carrier for the subframe, wherein the mapping the set of virtual frequency resources to the physical resources of the uplink carrier comprises mapping the set of virtual frequency resources to a control segment formed at an edge of a system bandwidth of the uplink carrier; and a memory coupled to the at least one processor.