Apparatus and method for wireless communication

A method for wireless communications, comprising:

• classifying communication devices in a cell into a plurality of communication device groups, wherein the plurality of communication device groups comprise a first communication device group and a second communication device group;
• and
• allocating pilot sequences in a first pilot group to the first communication device group, and allocating pilot sequences in a second pilot group to the second communication device group, wherein at least one of the following reuse configurations is performed in the case that the pilot sequences are insufficient;
• at least part of the communication devices in the second communication device group reuse at least one of the pilot sequences in the second pilot group, and at least one communication device in the second communication device group of the cell and at least one communication device in a second communication device group of a neighboring cell which is subjected to the same classification reuse at least one of the pilot sequences in the second pilot group.

A communication device, comprising:

• circuitry, configured to
• transmit channel quality measurement information and/or a radio resource management measurement report to a control apparatus;
• receive a pilot transmission configuration from the control apparatus, the pilot transmission configuration comprising information of a pilot sequence allocated to the communication device based on the channel quality measurement information and/or a radio resource management measurement, report;
• and
• transmit a pilot signal based, on the pilot transmission configuration, wherein the communication device is classified into a communication device group among a plurality of communication device groups based, on the channel quality measurement information and/or a radio resource management measurement report and is allocated with the pilot sequence belonging to the communication device group,
• the plurality of communication device groups comprise a first communication device group and a second communication device group,
• pilot sequences in a first pilot group are allocated to the first communication device group, and pilot sequences in a second pilot group are allocated to the second communication device group,
• at least one of the following reuse configurations is performed in the case that the pilot sequences are insufficient:
• at least part of the communication devices in the second communication device group reuse at least one of the pilot sequences in the second pilot group, and
• at least one communication device in the second communication device group of the cell and at least one communication device in a second communication device group of a neighboring cell which is subjected to the same classification reuse at least one of the pilot sequences in the second pilot group, and
• at least part of the pilot sequences in the first pilot group corresponding to the cell are the same as at least part of the pilot sequences in a first pilot group corresponding to the neighboring cell, and the pilot sequences in the second pilot group corresponding to the cell are different from the pilot sequences in the second pilot group corresponding to the neighboring cell.