US 2023/0413335 A1 · TRANSMIT POWER CONTROL FOR MULTIPLE PRACH TRANSMISSIONS

Abstract

An apparatus and system are described for power control transmission for multiple physical random access channel (PRACH) transmissions. The systems include repetition level ramping for the PRACH transmissions, as well as power control mechanisms for PRACH transmissions that use identical transmission (Tx) beams and that use different Tx beams. The number of repetition attempts for a PRACH transmission increases when a random access response (RAR) is not received or does not pass contention resolution for a maximum number of attempts. A PRACH transmission within one or more transmission occasions is cancelled if the power exceeds a maximum power for PRACH transmissions.

Claims20

Dependent claims

An apparatus of a user equipment (UE), the apparatus comprising:

processing circuitry to configure the UE to:
receive, from a 5th generation NodeB (gNB), a physical random access channel (PRACH) configuration, the PRACH configuration including a plurality of repetition levels for a plurality of PRACH transmissions and a maximum number of attempts for each repetition level;
and
transmit, to the gNB, multiple PRACH transmissions based on the PRACH configuration and measured reference signal received power (RSRP);
and
memory configured to store the PRACH configuration.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/241,729Filed 1 Sep 2023

Priority

29 Sep 2022

Published

21 Dec 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

H04W 52/36
Using constraints in the total amount of available transmission power: with a discrete range or set of values, e.g. step size, ramping or offsets
H04L 1/08
Arrangements for detecting or preventing errors in the information received: by repeating transmission, e.g. Verdan system
H04W 52/146
Separate analysis of uplink or downlink: uplink power control
H04W 52/48
TPC being performed in particular situations: during retransmission after error or non-acknowledgment

Transmit power control for multiple prach transmissions

Life of this patent

Transmit power control for multiple prach transmissions

Life of this patent

Abstract

Claims20