Method and system for physical downlink control channel multiplexing

An apparatus for multiplexing physical downlink control channel and physical downlink data channel comprising:

• 1) a physical resource blocks in a first and a second slots where no physical downlink data channel is allowed to be transmitted wherein the resource multiplexing between downlink control channel and physical downlink data channel wherein to cross-interleave the scheduling grants for uplink data transmissions (UL grants) of different users, and map them to the entire physical resource blocks in the first and the second slots where no physical downlink data channel is allowed to be transmitted wherein the resource multiplexing between downlink control channel and physical downlink data channel is frequency division multiplexing (FDM) in this case;
• 2) a first slot of the physical resource blocks where the second slot can be used wherein to mix the scheduling grants for downlink data transmission (DL grant) and for uplink data transmission (UL grant, if it is present) of a user, and map them to the first slot of the physical resource blocks where the second slot can be used for this user's downlink data transmission wherein the resource multiplexing between downlink control channel and physical downlink data channel is frequency division multiplexing (FDM)+time division multiplexing (TDM) in this case.

The apparatus of 12 further comprising separately configured sets of physical resource blocks potentially for cross-interleaved UL grants transmission and for mixture DL/UL grants transmission wherein the configuration is via higher layer signaling.

The apparatus of 13, wherein the physical resource blocks for cross-interleaved UL grants transmission is frequency distributed.

A system for multiplexing physical downlink control channel and physical downlink data channel comprising:

• 1) a physical resource blocks in a first and a second slots where no physical downlink data channel is allowed to be transmitted wherein the resource multiplexing between downlink control channel and physical downlink data channel wherein to cross-interleave the scheduling grants for uplink data transmissions (UL grants) of different users, and map them to the entire physical resource blocks in the first and the second slots where no physical downlink data channel is allowed to be transmitted wherein the resource multiplexing between downlink control channel and physical downlink data channel is frequency division multiplexing (FDM) in this case;
• 2) a first slot of the physical resource blocks where the second slot can be used wherein to mix the scheduling grants for downlink data transmission (DL grant) and for uplink data transmission (UL grant, if it is present) of a user, and map them to the first slot of the physical resource blocks where the second slot can be used for this user's downlink data transmission wherein the resource multiplexing between downlink control channel and physical downlink data channel is frequency division multiplexing (FDM)+time division multiplexing (TDM) in this case.