Methods, devices, and systems for transmitting initial access signals or channels
The present disclosure describes methods, systems and devices for transmitting initial access information from a base station to a user equipment (UE). One method includes notifying, by the base station, the UE to support at least one subcarrier spacing (SCS); communicating, by the base station, a subcarrier offset to the UE; and configuring, by the base station, a multiplexing pattern between initial access information. Another method includes receiving, by the UE from the base station, notification to support at least one subcarrier spacing (SCS); receiving, by the UE from the base station, a communication comprising a subcarrier offset; and receiving, by the UE from the base station, a configuration for a multiplexing pattern between initial access information.
1 . A method for wireless communication, comprising:
transmitting, by a base station, initial access information to a user equipment (UE) by:
notifying, by the base station, the UE to support at least one subcarrier spacing (SCS);
communicating, by the base station, a subcarrier offset to the UE;
configuring, by the base station, a multiplexing pattern between the initial access information; and
in response to three or more SCSs comprising frequencies from a set of 120 kHz, 240 kHz, 480 kHz, and 960 kHz being supported for a control resource set for a type 0-physical downlink control channel (CORESET0), utilizing, by the base station, a subCarrierSpacingCommon in a master information block (MIB) and a spare bit field in a physical broadcast channel (PBCH) payload to inform the UE to use a SCS of the three or more SCSs for at least one of a system information block 1 (SIB1), message 2/4 (Msg. 2/4) for initial access, paging, broadcast system information (SI) messages, or the CORESET0,
wherein the subCarrierSpacingCommon in the MIB and the spare bit field in PBCH payload jointly indicate the SCS of the three or more SCSs.
2 . The method according to claim 1 , wherein:
the initial access information comprises initial access signals or channels comprising at least one of the following:
a control resource set for a type 0-physical downlink control channel (CORESET0); or
a synchronization signal (SS)/physical broadcast channel (PBCH) block (SSB); and
the supported at least one SCS is used for at least one of the following: a system information block (SIB), a message for initial access (Msg. 2/4) for initial access, paging, broadcast system information (SI) message, or the CORESET0.
3 . The method according to claim 2 , wherein:
the supported at least one SCS is configured as at least one of the following:
only one SCS comprising one of 120 kHz, 240 kHz, 480 kHz, or 960 kHz;
120 kHz and 240 kHz;
120 kHz and 480 kHz;
120 kHz and 960 kHz;
240 kHz and 480 kHz;
240 kHz and 960 kHz;
480 kHz and 960 kHz; or
three or more SCSs comprising frequencies from a set of 120 kHz, 240 kHz, 480 kHz, and 960 kHz.
4 . A method for wireless communication, comprising:
receiving, by a user equipment (UE), initial access information from a base station by:
receiving, by the UE from the base station, notification to support at least one subcarrier spacing (SCS);
receiving, by the UE from the base station, a communication comprising a subcarrier offset;
receiving, by the UE from the base station, a configuration for a multiplexing pattern between initial access information; and
in response to three or more SCSs comprising frequencies from a set of 120 kHz, 240 kHz, 480 kHz, and 960 kHz being supported for a control resource set for a type 0-physical downlink control channel (CORESET0), receiving, by the UE from the base station, a subCarrierSpacingCommon in a master information block (MIB) and a spare bit field in a physical broadcast channel (PBCH) payload to inform the UE to use one SCS of the three or more SCSs for at least one of a system information block 1 (SIB1), message 2/4 (Msg. 2/4) for initial access, paging, broadcast system information (SI) messages, or the CORESET0,
wherein the subCarrierSpacingCommon in the MIB and the spare bit field in PBCH payload jointly indicate the SCS of the three or more SCSs.
5 . The method according to claim 4 , wherein:
the initial access information comprises initial access signals or channels comprising at least one of the following:
a control resource set for a type 0-physical downlink control channel (CORESET0); or
a synchronization signal (SS)/physical broadcast channel (PBCH) block (SSB); and
the supported at least one SCS is used for at least one of the following: a system information block (SIB), a message for initial access (Msg. 2/4) for initial access, paging, broadcast system information (SI) message, or the CORESET0.
6 . The method according to claim 5 , wherein:
the supported at least one SCS is configured as at least one of the following:
only one SCS comprising one of 120 kHz, 240 kHz, 480 kHz, or 960 kHz;
120 kHz and 240 kHz;
120 kHz and 480 kHz;
120 kHz and 960 kHz;
240 kHz and 480 kHz;
240 kHz and 960 kHz;
480 kHz and 960 kHz; or
three or more SCSs comprising frequencies from a set of 120 kHz, 240 kHz, 480 kHz, and 960 kHz.
7 . An apparatus comprising:
a memory storing instructions; and
a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to perform:
transmitting initial access information to a user equipment (UE) by:
notifying the UE to support at least one subcarrier spacing (SCS);
communicating a subcarrier offset to the UE;
configuring a multiplexing pattern between initial access information; and
in response to three or more SCSs comprising frequencies from a set of 120 kHz, 240 kHz, 480 kHz, and 960 kHz being supported for a control resource set for a type 0-physical downlink control channel (CORESET0), utilizing a subCarrierSpacingCommon in a master information block (MIB) and a spare bit field in a physical broadcast channel (PBCH) payload to inform the UE to use one SCS of the three or more SCSs for at least one of a system information block 1 (SIB1), message 2/4 (Msg. 2/4) for initial access, paging, broadcast system information (SI) messages, or the CORESET0,
wherein the subCarrierSpacingCommon in the MIB and the spare bit field in PBCH payload jointly indicate the SCS of the three or more SCSs.
8 . An apparatus comprising:
a memory storing instructions; and
a processor in communication with the memory, wherein, when the processor executes the instructions, the processor is configured to cause the apparatus to perform the method according to claim 4 .
9 . A non-transitory computer-readable program medium storing instructions, wherein, the instructions, when executed by a processor, are configured to cause the processor to implement the method according to claim 1 .
10 . A non-transitory computer-readable program medium storing instructions, wherein, the instructions, when executed by a processor, are configured to cause the processor to implement the method according to claim 4 .