Method and system for transmitting channel state information in wireless communication systems

A method of operating a base station, the method comprising:

• transmitting an uplink grant in a downlink control information (DCI) format to a subscriber station;
• and
• receiving only uplink control information (UCI) on a physical uplink shared channel (PUSCH) from the subscriber station when the uplink grant includes:
• a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, or a redundancy version of the PUSCH with a value of 1;
• a channel state information (CSI) request field with a non-zero value;
• and
• a total number of physical resource blocks allocated for the subscriber station, NPRB, with a value less than or equal to a threshold number of physical resource blocks, TPRB,
• wherein TPRB is based at least partly upon one of a total number of CSI information bits to be transmitted on the PUSCH, Ntotal, and a number of downlink component carriers (DL CCs) reported in a current CSI reporting, NCCs.

A subscriber station comprising:

• a receive path circuitry configured to receive an uplink grant in a downlink control information (DCI) format from a base station;
• and
• a transmit path circuitry configured to transmit only uplink control information (UCI) on a physical uplink shared channel (PUSCH) to the base station when the uplink grant includes:
• a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, or a redundancy version of the PUSCH with a value of 1;
• a channel state information (CSI) request field with a non-zero value;
• and
• a total number of physical resource blocks allocated for the subscriber station, NPRB, with a value less than or equal to a threshold number of physical resource blocks, TPRB,
• wherein TPRB is based at least partly upon one of a total number of CSI information bits to be transmitted on the PUSCH, Ntotal, and a number of downlink component carriers (DL CCs) reported in a current CSI reporting, NCCs.

A method of operating a subscriber station, the method comprising:

• receiving an uplink grant in a downlink control information (DCI) format from a base station;
• and
• transmitting only uplink control information (UCI) on a physical uplink shared channel (PUSCH) to the base station when the uplink grant includes:
• a modulation and coding scheme (MCS) of an enabled transport block (TB) with a value of 29, or a redundancy version of the PUSCH with a value of 1;
• a channel state information (CSI) request field with a non-zero value;
• and
• a total number of physical resource blocks allocated for the subscriber station, NPRB, with a value less than or equal to a threshold number of physical resource blocks, TPRB, wherein TPRB is based at least partly upon one of a total number of CSI information bits to be transmitted on the PUSCH, Ntotal, and a number of downlink component carriers (DL CCs) reported in a current CSI reporting, NCCs.