US 10,568,130 B2 · Techniques and apparatuses for multiple types of physical random access channel (PRACH) transmission utilization

Abstract

A user equipment (UE) may perform a random access procedure to synchronize with a network for uplink and/or downlink communication. The UE may transmit a first type of random access transmission that includes transmitting a preamble or a second type of random access transmission that includes transmitting a preamble and a random access message. The second type may result in reduced delay but may have lesser SNR tolerance than the first type. In some aspects, the UE may determine whether to transmit the first type or the second type, and may transmit the first type or the second type in a random access channel portion of a slot. The random access channel portion of the slot may be occupied by portions of either the first type of random access transmission or the second type of random access transmission, thereby enabling flexible utilization of multiple types of random access procedure.

Claims81

Dependent claims

A method for wireless communication, comprising:

determining, by a user equipment and based on a channel condition, whether to transmit at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble,
wherein the second type of random access transmission includes the preamble and a random access message,
wherein the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
wherein the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time,
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time, and
wherein the first unit and the second unit are non-overlapping;
and
transmitting, by the user equipment, the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

8 more elements

A device for wireless communication, comprising:

memory;
and
one or more processors coupled to the memory, the memory and the one or more processors configured to:
determine, based on a channel condition, whether to transmit at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble,
wherein the second type of random access transmission includes the preamble and a random access message,
the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
wherein the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time,
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time, and
wherein the first unit and the second unit are non-overlapping;
and
transmit the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

11 more elements

An apparatus for wireless communication, comprising:

means for determining, based on a channel condition, whether to transmit at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble,
wherein the second type of random access transmission includes the preamble and a random access message,
wherein the means for determining is at least partially implemented in hardware,
wherein the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
wherein the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time,
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time, and
wherein the first unit and the second unit are non-overlapping;
and
means for transmitting the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

9 more elements

A method for wireless communication, comprising:

determining, by a base station, whether to receive at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble, and
wherein the second type of random access transmission includes the preamble and a random access message,
wherein the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
wherein the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time, and
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time,
wherein the first unit and the second unit are non-overlapping;
and
receiving, by the base station, the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

8 more elements

A device for wireless communication, comprising:

memory;
and
one or more processors coupled to the memory, the memory and the one or more processors configured to:
determine whether to receive at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble,
wherein the second type of random access transmission includes the preamble and a random access message,
wherein the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time,
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time,
wherein the first unit and the second unit are non-overlapping;
and
receive the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

11 more elements

An apparatus for wireless communication, comprising:

means for determining whether to receive at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble,
wherein the second type of random access transmission includes the preamble and a random access message,
wherein the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
wherein the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time,
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time,
wherein the means for determining is at least partially implemented in hardware, and
wherein the first unit and the second unit are non-overlapping;
and
means for receiving the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

9 more elements

A non-transitory computer-readable medium storing instructions for wireless communication, the instructions comprising:

one or more instructions that, when executed by one or more processors of a device, cause the one or more processors to:
determine whether to receive at least one of a first type of random access transmission or a second type of random access transmission within a random access channel portion of a slot,
wherein the random access channel portion of the slot is used to obtain access to a network for at least one of uplink communication or downlink communication,
wherein the first type of random access transmission includes a preamble,
wherein the second type of random access transmission includes the preamble and a random access message,
wherein the first type of random access transmission and the second type of random access transmission are each comprised of a common unit structure,
wherein the random access channel portion of the slot comprises a grid of units,
wherein the first type of random access transmission is assigned to a first unit, of the grid of units, associated with a frequency and a first time,
wherein the second type of random access transmission is assigned to a second unit, of the grid of units, associated with the frequency and a second time, and
wherein the first unit and the second unit are non-overlapping;
and
receive the at least one of the first type of random access transmission or the second type of random access transmission within the random access channel portion of the slot.

9 more elements

Dependencies are inferred from the claim text.

Techniques and apparatuses for multiple types of physical random access channel (PRACH) transmission utilization

Life of this patent

Techniques and apparatuses for multiple types of physical random access channel (PRACH) transmission utilization

Life of this patent

Abstract

Claims81