Power control in assisted millimeter wave initial access
AssigneeQUALCOMM Incorporated
InventorsNavid Abedini, Bilal Sadiq, Sundar Subramanian, Muhammad Nazmul Islam, Junyi Li
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Abstract
Certain aspects of the present disclosure provide techniques for assisted power control for an uplink signal transmitted during a RACH procedure. A UE may determine a transmit power for transmitting a message during a RACH procedure with a secondary BS, based at least in part, on communication between the UE and a primary BS. The UE may transmit the message to the second BS during the RACH procedure based, at least in part, on the determined transmit power.
Claims26
A method for wireless communication by a user equipment (UE), comprising:
- determining a transmit power for transmitting a message during a random access channel (RACH) procedure with a first base station (BS), based at least in part, on communication between the UE and a second BS by transmitting a reference signal (RS) to the second BS and receiving a directional synchronization signal from the first BS in response to the RS, wherein the transmit power is based, at least in part, on the received directional synchronization signal, wherein the first BS operates in a millimeter wave (mmWave) spectrum and the second BS operates in a different frequency spectrum;
- transmitting the message to the first BS during the RACH procedure based, at least in part, on the determined transmit power.
A method for wireless communication by a first base station (BS), comprising:
- communicating with a user equipment (UE);
- and
- taking one or more actions to assist the UE in setting a transmit power for transmitting a message during a random access channel (RACH) procedure with a second BS, based at least in part, on the communication between the UE and the first BS, wherein taking the one or more actions comprises receiving a first request, from the UE, for a directional synchronization signal from the second BS, and in response to the first request, transmitting, to the second BS, a second request for the directional synchronization signal, wherein the second BS operates in a millimeter wave (mmWave) spectrum and the first BS operates in a different frequency spectrum.
An apparatus for wireless communication by a user equipment (UE), comprising at least one processor and memory coupled to the at least one processor, wherein the at least one processor is configured to:
- determine a transmit power for transmitting a message during a random access channel (RACH) procedure with a first base station (BS), based at least in part, on communication between the UE and a second BS by transmitting a reference signal (RS) to the second BS and receiving a directional synchronization signal from the first BS in response to the RS, wherein the transmit power is based, at least in part, on the received directional synchronization signal, wherein the first BS operates in a millimeter wave (mmWave) spectrum and the second BS operates in a different frequency spectrum;
- transmit the message to the first BS during the RACH procedure based, at least in part, on the determined transmit power.
An apparatus for wireless communication by a first base station (BS), comprising at least one processor and memory coupled to the at least one processor, wherein the at least one processor is configured to:
- communicate with a user equipment (UE);
- and
- take one or more actions to assist the UE in setting a transmit power for transmitting a message during a random access channel (RACH) procedure with a second BS, based at least in part, on the communication between the UE and the first BS, wherein taking the one or more actions comprises receiving a first request, from the UE, for a directional synchronization signal from the second BS, and in response to the first request, transmitting, to the second BS, a second request for the directional synchronization signal, wherein the second BS operates in a millimeter wave (mmWave) spectrum and the first BS operates in a different frequency spectrum.
Dependencies are inferred from the claim text.