L1 CONTROL SIGNALING FOR UTRAN HSDPA

摘要

A Level-1 (L1) signaling flag is mapped to unused (invalid) bit sequences in Part 1 of the HS-SCCH—that is, Part 1 bit encodings that are not defined in the UTRAN specifications—and a corresponding L1 command is encoded in Part 2. This allows UE (18) to detect early that the HS-SCCH is pure L1 signaling, and the UE (18) may avoid wasting power by not processing an accompanying HS-PDSCH. Alternatively, in CPC HS-SCCH-less mode, the UE (18) may blind decode the HS PDSCH. In one embodiment, a general DRX mode is defined and controlled via L1 signaling. In one embodiment, a UE (18) acknowledgement improves the L1 signaling accuracy. In one embodiment, a L1 signal and UE (18) acknowledgement protocol are utilized to “ping” a UE (18).

主权项

1. A method, performed by a user equipment (UE), comprising:
receiving an L1 signaling flag encoded into a channelization code set and modulation scheme information bits of a High Speed Shared Control Channel (HS-SCCH) transmission, wherein the L1 signaling flag indicates that the HS-SCCH transmission includes an encoded L1 command to be decoded by the UE, wherein the encoded L1 command is in a field which is transmitted after the channelization code set and modulation scheme information bits; and transmitting an acknowledgement of the L1 command.