Beamforming of control information in a wireless communication system

A method of sending traffic data and control information in a wireless communication system, comprising:

• performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• sending the beamformed traffic data on a first physical channel;
• and
• sending the beamformed control information on a second physical channel, wherein the performing beamforming for the traffic data comprises performing beamforming based on M columns of the precoding matrix to send the traffic data on M layers, where M is one or greater.

A method of sending traffic data and control information in a wireless communication system, comprising:

• performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• sending the beamformed traffic data on a first physical channel;
• and
• sending the beamformed control information on a second physical channel, wherein the sending the beamformed traffic data comprises sending the beamformed traffic data in a first segment of a resource block, the first segment being allocated to the first physical channel, and wherein the sending the beamformed control information comprises sending the beamformed control information in a second segment of the resource block, the second segment being allocated to the second physical channel.

A method of sending traffic data and control information in a wireless communication system, comprising:

• performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• sending the beamformed traffic data on a first physical channel;
• and
• sending the beamformed control information on a second physical channel, wherein the traffic data, the control information, and the precoding matrix are for a first user equipment (UE), the method further comprising:
• performing beamforming for traffic data for a second UE based on a second precoding matrix;
• performing beamforming for control information for the second UE based on the second precoding matrix;
• sending the beamformed traffic data for the second UE on the first physical channel;
• and
• sending the beamformed control information for the second UE on the second physical channel.

A method of sending traffic data and control information in a wireless communication system, comprising:

• performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• sending the beamformed traffic data on a first physical channel;
• and
• sending the beamformed control information on a second physical channel, wherein the control information comprises a scheduling assignment for a user equipment (UE), and wherein the traffic data is sent in accordance with the scheduling assignment.

An apparatus for wireless communication, comprising:

• means for performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• means for performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• means for sending the beamformed traffic data on a first physical channel;
• and
• means for sending the beamformed control information on a second physical channel, wherein the means for sending the beamformed traffic data comprises means for sending the beamformed traffic data in a first segment of a resource block, the first segment being allocated to the first physical channel, and wherein the means for sending the beamformed control information comprises means for sending the beamformed control information in a second segment of the resource block, the second segment being allocated to the second physical channel.

An apparatus for wireless communication, comprising:

• means for performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• means for performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• means for sending the beamformed traffic data on a first physical channel;
• and
• means for sending the beamformed control information on a second physical channel, wherein the means for performing beamforming for the traffic data comprises means for performing beamforming based on M columns of the precoding matrix to send the traffic data on M layers, where M is one or greater, and wherein the means for performing beamforming for the control information comprises means for performing beamforming based on one column of the precoding matrix to send the control information on one layer.

An apparatus for wireless communication, comprising:

• means for performing beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers;
• means for performing beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers;
• means for sending the beamformed traffic data on a first physical channel;
• and
• means for sending the beamformed control information on a second physical channel, means for sending non-beamformed control information in a first section of a resource block, and wherein the means for sending the beamformed control information comprises means for sending the beamformed control information in a second section of the resource block, the first and second sections of the resource block being time division multiplexed or frequency division multiplexed.

A computer program product, comprising:

• a non-transitory computer-readable medium comprising:
• code for causing at least one computer to perform beamforming for traffic data by multiplying a precoding matrix with a vector of data symbols to be sent on at least one of a plurality of subcarriers,
• code for causing the at least one computer to perform beamforming for control information by multiplying the precoding matrix with a vector of control symbols to be sent on at least one of the plurality of subcarriers,
• code for causing the at least one computer to send the beamformed traffic data on a first physical channel,
• code for causing the at least one computer to send the beamformed control information on a second physical channel;
• code for causing the at least one computer to send the beamformed traffic data in a first segment of a resource block;
• and
• code for causing the at least one computer to send the beamformed control information in a second segment of the resource block, the first segment being allocated to the first physical channel, and the second segment being allocated to the second physical channel.

A method of receiving traffic data and control information in a wireless communication system, comprising:

• receiving beamformed traffic data sent on a first physical channel in accordance with a multiplication of a precoding matrix with a vector of data symbols sent on at least one of a plurality of subcarriers;
• receiving beamformed control information sent on a second physical channel in accordance with a multiplication of the precoding matrix with a vector of control symbols sent on at least one of the plurality of subcarriers;
• performing detection for the beamformed control information to recover the control information;
• and
• performing detection for the beamformed traffic data to recover the traffic data, wherein the receiving the beamformed traffic data comprises receiving the beamformed traffic data in a first segment of a resource block, the first segment being allocated to the first physical channel, and wherein the receiving the beamformed control information comprises receiving the beamformed control information in a second segment of the resource block, the second segment being allocated to the second physical channel.

A method of receiving traffic data and control information in a wireless communication system, comprising:

• receiving beamformed traffic data sent on a first physical channel in accordance with a multiplication of a precoding matrix with a vector of data symbols sent on at least one of a plurality of subcarriers;
• receiving beamformed control information sent on a second physical channel in accordance with a multiplication of the precoding matrix with a vector of control symbols sent on at least one of the plurality of subcarriers;
• performing detection for the beamformed control information to recover the control information;
• and
• performing detection for the beamformed traffic data to recover the traffic data, wherein the receiving the beamformed traffic data comprises receiving the beamformed traffic data sent on at least one layer based on at least one column of the precoding matrix, and wherein the receiving the beamformed control information comprises receiving the beamformed control information sent on one layer based on one column of the precoding matrix.

A method of receiving traffic data and control information in a wireless communication system, comprising:

• receiving beamformed traffic data sent on a first physical channel in accordance with a multiplication of a precoding matrix with a vector of data symbols sent on at least one of a plurality of subcarriers;
• receiving beamformed control information sent on a second physical channel in accordance with a multiplication of the precoding matrix with a vector of control symbols sent on at least one of the plurality of subcarriers;
• performing detection for the beamformed control information to recover the control information;
• and
• performing detection for the beamformed traffic data to recover the traffic data, wherein non-beamformed control information is sent in a first section of a resource block, and wherein the beamformed control information is sent in a second section of the resource block, the first and second sections being time division multiplexed or frequency division multiplexed.