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US 12,593,286 B2Granted
Determining an initial PRACH preamble transmission power based on historical completed PRACH procedures
AssigneeQUALCOMM Incorporated
InventorsHao Zhang, Wei He, Yan Wang, Jian Li, Aimin Shang, Miao Fu, Chaofeng Hui, Yuankun Zhu, Fojian Zhang
Life of this patent
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Abstract
In an aspect, a UE may determine an initial transmission power for transmission of a physical random access channel (PRACH) preamble of a PRACH procedure based upon a final PRACH preamble transmission power associated with a set of historical completed PRACH procedures. The UE may further attempt an initial transmission of the PRACH preamble based on the determined initial transmission power.
Claims18
A method of operating a user equipment (UE), comprising:
- determining an initial transmission power for transmission of a physical random access channel (PRACH) preamble of a PRACH procedure based upon a final PRACH preamble transmission power associated with a set of historical completed PRACH procedures;
- attempting an initial transmission of the PRACH preamble based on the determined initial transmission power,
- wherein the determined initial transmission power is higher than a default initial transmission power for transmission of PRACH preambles;
- and
- determining, in response to a triggering event, to reset the initial transmission power for transmissions of PRACH preambles of subsequent PRACH procedures back to the default transmission power,
- wherein the triggering event comprises:
- a threshold number of PRACH procedures subsequent to a latest of the set of historical completed PRACH procedures being performed,
- a threshold period of time subsequent to the latest of the set of historical completed PRACH procedures elapsing,
- an inter-cell handoff of the UE, or
- a combination thereof.
7 more elements
A user equipment (UE), comprising:
- means for determining an initial transmission power for transmission of a physical random access channel (PRACH) preamble of a PRACH procedure based upon a final PRACH preamble transmission power associated with a set of historical completed PRACH procedures;
- means for attempting an initial transmission of the PRACH preamble based on the determined initial transmission power,
- wherein the determined initial transmission power is higher than a default initial transmission power for transmission of PRACH preambles;
- and
- means for determining, in response to a triggering event, to reset the initial transmission power for transmissions of PRACH preambles of subsequent PRACH procedures back to the default transmission power,
- wherein the triggering event comprises:
- a threshold number of PRACH procedures subsequent to a latest of the set of historical completed PRACH procedures being performed,
- a threshold period of time subsequent to the latest of the set of historical completed PRACH procedures elapsing,
- an inter-cell handoff of the UE, or
- a combination thereof.
7 more elements
A user equipment (UE), comprising:
- a memory;
- at least one transceiver;
- and
- at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor configured to:
- determine an initial transmission power for transmission of a physical random access channel (PRACH) preamble of a PRACH procedure based upon a final PRACH preamble transmission power associated with a set of historical completed PRACH procedures;
- attempt an initial transmission of the PRACH preamble based on the determined initial transmission power,
- wherein the determined initial transmission power is higher than a default initial transmission power for transmission of PRACH preambles;
- and
- determine, in response to a triggering event, to reset the initial transmission power for transmissions of PRACH preambles of subsequent PRACH procedures back to the default transmission power,
- wherein the triggering event comprises:
- a threshold number of PRACH procedures subsequent to a latest of the set of historical completed PRACH procedures being performed,
- a threshold period of time subsequent to the latest of the set of historical completed PRACH procedures elapsing,
- an inter-cell handoff of the UE, or
- a combination thereof.
11 more elements
A non-transitory computer-readable medium containing instructions stored thereon, for causing at least one processor in a user equipment (UE) to:
- determine an initial transmission power for transmission of a physical random access channel (PRACH) preamble of a PRACH procedure based upon a final PRACH preamble transmission power associated with a set of historical completed PRACH procedures;
- and
- attempt an initial transmission of the PRACH preamble based on the determined initial transmission power,
- wherein the determined initial transmission power is higher than a default initial transmission power for transmission of PRACH preambles;
- and
- determine, in response to a triggering event, to reset the initial transmission power for transmissions of PRACH preambles of subsequent PRACH procedures back to the default transmission power,
- wherein the triggering event comprises:
- a threshold number of PRACH procedures subsequent to a latest of the set of historical completed PRACH procedures being performed,
- a threshold period of time subsequent to the latest of the set of historical completed PRACH procedures elapsing,
- an inter-cell handoff of the UE, or
- a combination thereof.
8 more elements
Dependencies are inferred from the claim text.