Configuration and activation of cell discontinuous transmission and reception
Methods and apparatuses for configuration and activation of cell discontinuous transmission (DTX) and cell discontinuous reception (DRX). A method performed by a user equipment (UE) includes receiving first information related to a set of parameters associated with cell DTX or DRX on a cell, second information related to an indication for activation or deactivation of the cell DTX or DRX, and the indication for activation or deactivation of the cell DTX or DRX. The indication is provided by a downlink control information (DCI) format or a radio resource control (RRC) message. The method further includes determining one of an active period and a non-active period of the cell DTX or DRX based on the indication for activation or deactivation of cell DTX or DRX, respectively, and receiving or transmitting channels or signals on the cell based on the determined active and non-active periods of the cell DTX or DRX, respectively.
1 . A method performed by a user equipment (UE), the method comprising:
receiving:
a radio resource control (RRC) message including first information configuring a set of parameters associated with cell discontinuous transmission (DTX) or cell discontinuous reception (DRX) on a cell, and
an indication for activation or deactivation of the cell DTX or the cell DRX for the cell, wherein the indication is provided by:
a downlink control information (DCI) format including one or more information blocks in a physical downlink control channel (PDCCH); or
the RRC message;
determining one of:
an active period and a non-active period of the cell DTX based on the indication for activation or deactivation of the cell DTX, or
an active period and a non-active period of the cell DRX based on the indication for activation or deactivation of the cell DRX; and
performing one of:
receiving channels or signals on the cell based on the active period and the non-active period of the cell DTX, or
transmitting channels or signals on the cell based on the active period and the non-active period of the cell DRX,
wherein the indication for activation or deactivation of the cell DRX applies to both an uplink (UL) carrier and a secondary UL (SUL) carrier when the cell includes the SUL carrier.
2 . The method of claim 1 , wherein whether the set of parameters are for the cell DTX only, the cell DRX only, or both the cell DTX and cell DRX is identified based on the first information.
3 . The method of claim 1 , wherein the RRC message includes the indication indicating activation of the cell DTX or the cell DRX according to the set of parameters.
4 . The method of claim 1 , wherein:
the indication is provided by the DCI format,
a cyclic redundancy check (CRC) of the DCI format is scrambled by a radio network temporary identifier (RNTI) associated with the cell DTX and the cell DRX, and
the RRC message further includes second information providing a starting bit position of an information block of the DCI format for the UE for the cell.
5 . The method of claim 1 , wherein, when the indication is provided by the DCI format:
a ‘0’ value for a bit of a cell DTX or cell DRX indication field in an information block of the DCI format indicates deactivation of the cell DTX or the cell DRX, and
a ‘1’ value for the bit of the cell DTX or cell DRX indication field in an information block of the DCI format indicates activation of the cell DTX or the cell DRX.
6 . The method of claim 1 , wherein:
the indication is provided by the DCI format, and
the DCI format provides:
an indication to extend a current active period or non-active period of the cell DTX or the cell DRX, or
an indication to skip the current active period or non-active period of the cell DTX or the cell DRX.
7 . A base station (BS) comprising:
a transceiver configured to transmit:
a radio resource control (RRC) message including first information configuring a set of parameters associated with cell discontinuous transmission (DTX) or cell discontinuous reception (DRX) on a cell, and
an indication for activation or deactivation of the cell DTX or the cell DRX for the cell, wherein the indication is provided by:
a downlink control information (DCI) format including one or more information blocks in a physical downlink control channel (PDCCH); or
the RRC message; and
a processor operably coupled to the transceiver, the processor configured to determine one of:
an active period and a non-active period of the cell DTX based on the indication for activation or deactivation of the cell DTX, or
an active period and a non-active period of the cell DRX based on the indication for activation or deactivation of the cell DRX,
wherein the transceiver is further configured to perform one of:
transmit channels or signals on the cell based on the active period and the non-active period of the cell DTX, or
receive channels or signals on the cell based on the active period and the non-active period of the cell DRX,
wherein the indication for activation or deactivation of the cell DRX applies to both an uplink (UL) carrier and a secondary UL (SUL) carrier when the cell includes the SUL carrier.
8 . The BS of claim 7 , wherein whether the set of parameters are for the cell DTX only, the cell DRX only, or both the cell DTX and cell DRX is identified based on the first information.
9 . The BS of claim 7 , wherein the RRC message includes the indication indicating activation of the cell DTX or the cell DRX according to the set of parameters.
10 . The BS of claim 7 , wherein:
the indication is provided by the DCI format,
a cyclic redundancy check (CRC) of the DCI format is scrambled by a radio network temporary identifier (RNTI) associated with the cell DTX and the cell DRX, and
the RRC message further includes second information providing a starting bit position of an information block of the DCI format for a UE for the cell.
11 . The BS of claim 7 , wherein, when the indication is provided by the DCI format:
a ‘0’ value for a bit of a cell DTX or cell DRX indication field in an information block of the DCI format indicates deactivation of the cell DTX or the cell DRX, and
a ‘15’ value for the bit of the cell DTX or cell DRX indication field in an information block of the DCI format indicates activation of the cell DTX or the cell DRX.
12 . The BS of claim 7 , wherein:
the indication is provided by the DCI format, and
the DCI format provides:
an indication to extend a current active period or non-active period of the cell DTX or the cell DRX, or
an indication to skip the current active period or non-active period of the cell DTX or the cell DRX.
13 . A user equipment (UE) comprising:
a transceiver configured to receive:
a radio resource control (RRC) message including first information configuring a set of parameters associated with cell discontinuous transmission (DTX) or cell discontinuous reception (DRX) on a cell, and ’an indication for activation or deactivation of the cell DTX or the cell DRX for the cell, wherein the indication is provided by:
a downlink control information (DCI) format including one or more information blocks in a physical downlink control channel (PDCCH); or
the RRC message; and
a processor operably coupled to the transceiver, the processor configured to determine one of:
an active period and a non-active period of the cell DTX based on the indication for activation or deactivation of the cell DTX, or
an active period and a non-active period of the cell DRX based on the indication for activation or deactivation of the cell DRX,
wherein the transceiver is further configured to one of:
receive channels or signals on the cell based on the active period and the non-active period of the cell DTX, or
transmit channels or signals on the cell based on the active period and the non-active period of the cell DRX,
wherein the indication for activation or deactivation of the cell DRX applies to both an uplink (UL) carrier and a secondary UL (SUL) carrier when the cell includes the SUL carrier.
14 . The UE of claim 13 , wherein whether the set of parameters are for the cell DTX only, the cell DRX only, or both the cell DTX and DRX is identified based on the first information.
15 . The UE of claim 13 , wherein the RRC message includes the indication indicating activation of the cell DTX or the cell DRX according to the set of parameters.
16 . The UE of claim 13 , wherein:
the indication is provided by the DCI format,
a cyclic redundancy check (CRC) of the DCI format is scrambled by a radio network temporary identifier (RNTI) associated with the cell DRX, and
the RRC message further includes second information providing a starting bit position of an information block of the DCI format for the UE for the cell.
17 . The UE of claim 13 , wherein, when the indication is provided by the DCI format:
a ‘0’ value for a bit of a cell DTX or cell DRX indication field in an information block of the DCI format indicates deactivation of the cell DTX or the cell DRX, and
a ‘15’ value for the bit of the cell DTX or cell DRX indication field in an information block of the DCI format indicates activation of the cell DTX or the cell DRX.