Timing advance group for new radio

An apparatus for wireless communication, comprising:

• means for providing a timing advance command for a radio access network that employs a modulation scheme with a scalable numerology, wherein the timing advance command accommodates the scalable numerology used by the radio access network, wherein providing the timing advance command comprises configuring a number of bits used to express a timing advance duration to a user equipment (UE), wherein the number of bits is a first number of bits when the UE is in an initial access procedure with the radio access network, wherein the number of bits is a second number of bits when the UE is in a connected state in the radio access network, and wherein the first number of bits is greater than the second number of bits for a common timing advance step size;
• means for determining a timing advance step size for the UE when the UE is in communication with the radio access network, the timing advance step size being associated with a group of two or more subcarrier spacings defined for the radio access network, wherein the timing advance step size is scaled in accordance with the group of two or more subcarrier spacings defined for the radio access network and used to calculate the timing advance duration included in the timing advance command;
• and
• means for transmitting the timing advance command to the UE, wherein the timing advance command includes the first number of bits used to express the timing advance duration when the UE is in the initial access procedure with the radio access network, and wherein the timing advance command includes the second number of bits used to express the timing advance duration when the UE is in the connected state in the radio access network.

An apparatus for wireless communication, comprising:

• means for providing a timing advance command for a radio access network that employs a modulation scheme with a scalable numerology, wherein the timing advance command accommodates the scalable numerology used by the radio access network, wherein providing the timing advance command comprises configuring a number of bits used to express a timing advance duration to a user equipment (UE), wherein the number of bits is a first number of bits when the UE is in an initial access procedure with the radio access network, wherein the number of bits is a second number of bits when the UE is in a connected state in the radio access network, and wherein the first number of bits is greater than the second number of bits for a common timing advance step size;
• means for determining a timing advance step size for the UE when the UE is in communication with the radio access network, the timing advance step size being associated with one or more subcarrier spacings defined for the radio access network, wherein the timing advance step size is scaled in accordance with the one or more subcarrier spacings defined for the radio access network and used to calculate the timing advance duration included in the timing advance command;
• and
• means for transmitting the timing advance command to the UE, wherein the timing advance command includes the first number of bits used to express the timing advance duration when the UE is in the initial access procedure with the radio access network, and wherein the timing advance command includes the second number of bits used to express the timing advance duration when the UE is in the connected state in the radio access network.

An apparatus for wireless communication, comprising:

• at least one processor;
• a transceiver communicatively coupled to the at least one processor;
• and a memory communicatively coupled to the at least one processor, wherein the at least one processor is configured to:
• provide a timing advance command for a radio access network that employs a modulation scheme with a scalable numerology, wherein the timing advance command accommodates the scalable numerology used by the radio access network, wherein providing the timing advance command comprises configuring a number of bits used to express a timing advance duration to a user equipment (UE), wherein the number of bits is a first number of bits when the UE is in an initial access procedure with the radio access network, wherein the number of bits is a second number of bits when the UE is in a connected state in the radio access network, and wherein the first number of bits is greater than the second number of bits for a common timing advance step size;
• determine a timing advance step size for the UE when the UE is in communication with the radio access network, the timing advance step size being associated with one or more subcarrier spacings defined for the radio access network, wherein the timing advance step size is scaled in accordance with the one or more subcarrier spacings defined for the radio access network and used to calculate the timing advance duration included in the timing advance command;
• and transmit the timing advance command to the UE, wherein the timing advance command includes the first number of bits used to express the timing advance duration when the UE is in the initial access procedure with the radio access network, and wherein the timing advance command includes the second number of bits used to express the timing advance duration when the UE is in the connected state in the radio access network.

A non-transitory computer-readable medium storing computer-executable code, comprising code for causing a computer to:

• provide a timing advance command for a radio access network that employs a modulation scheme with a scalable numerology, wherein the timing advance command accommodates the scalable numerology used by the radio access network, wherein providing the timing advance command comprises configuring a number of bits used to express a timing advance duration to a user equipment (UE), wherein the number of bits is a first number of bits when the UE is in an initial access procedure with the radio access network, wherein the number of bits is a second number of bits when the UE is in a connected state in the radio access network, and wherein the first number of bits is greater than the second number of bits for a common timing advance step size;
• determine a timing advance step size for the UE when the UE is in communication with the radio access network, the timing advance step size being associated with the one or more subcarrier spacings defined for the radio access network, wherein the timing advance step size is scaled in accordance with the one or more subcarrier spacings defined for the radio access network and used to calculate the timing advance duration included in the timing advance command;
• and
• transmit the timing advance command to the UE, wherein the timing advance command includes the first number of bits used to express the timing advance duration when the UE is in the initial access procedure with the radio access network, and wherein the timing advance command includes the second number of bits used to express the timing advance duration when the UE is in the connected state in the radio access network.

An apparatus for wireless communication, comprising:

• at least one processor;
• a transceiver communicatively coupled to the at least one processor;
• and
• a memory communicatively coupled to the at least one processor, wherein the at least one processor is configured to:
• receive a timing advance command from a radio access network that employs a modulation scheme with a scalable numerology,
• wherein the timing advance command accommodates the scalable numerology used by the radio access network, wherein the timing advance command comprises a number of bits used to express a timing advance duration, wherein the number of bits is a first number of bits when the apparatus is in an initial access procedure with the radio access network, wherein the number of bits is a second number of bits when the apparatus is in a connected state in the radio access network, and wherein the first number of bits is greater than the second number of bits for a common timing advance step size,
• wherein the timing advance duration is based on a timing advance step size that is associated with one or more subcarrier spacings defined for the radio access network and is scaled in accordance with the one or more subcarrier spacings defined for the radio access network;
• and
• communicate with the radio access network based on the timing advance command.

A method for wireless communication at a user equipment (UE), comprising:

• receiving a timing advance command from a radio access network that employs a modulation scheme with a scalable numerology,
• wherein the timing advance command accommodates the scalable numerology used by the radio access network, wherein the timing advance command comprises a number of bits used to express a timing advance duration,
• wherein the number of bits is a first number of bits when the apparatus is in an initial access procedure with the radio access network, wherein the number of bits is a second number of bits when the apparatus is in a connected state in the radio access network, andwherein the first number of bits is greater than the second number of bits for a common timing advance step size, wherein the timing advance duration is based on a timing advance step size that is associated with one or more subcarrier spacings defined for the radio access network and is scaled in accordance with the one or more subcarrier spacings defined for the radio access network;
• and
• communicating with the radio access network based on the timing advance command.