Method and arrangement for pilot pattern based control signaling in mimo systems

A radio base station for control signaling in a wireless communication network, wherein the radio base station is configured to receive control information from a user equipment, and wherein a plurality of common pilot channels are available between the radio base station and the user equipment, wherein an improvement comprises:

• a memory for storing a defined set of unique pilot sequences;
• a receiving circuit configured to receive specific pilot sequences from the defined set of pilot sequences transmitted by the user equipment on specific common pilot channels, thereby forming a pilot sequence assignment pattern that represents specific control signaling information;
• and
• a processing circuit configured to utilize a list of relations between pilot sequence assignment patterns and control information to extract the control information transmitted from the user equipment.

A user equipment for control signaling in a wireless communication network, wherein the user equipment is configured to transfers control information to at least one radio base station, and wherein a plurality of common pilot channels are available between the user equipment and the radio base station, wherein an improvement comprises:

• a memory for storing a defined set of unique pilot sequences;
• a processing circuit configured to assign specific pilot sequences from the set of pilot sequences to specific common pilot channels, thereby forming a pilot sequence assignment pattern representing specific control signaling information;
• and
• a transmitting circuit configured to transmit the assigned specific pilot sequences on the specific common pilot channels.