US 12,713,289 B2Granted

Method and device for random access in small data transmissions

AssigneeApogee 5G Global, LLC

InventorXiaobo Zhang

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Abstract

The present disclosure provides a method and device used in a communication node for wireless communications. A communication node determines that first data is transmitted in a first state, selects a first step-size, and transmits a first signal according to first target power; updates a first counter; when the first counter is not greater than a first threshold, and determines that a second counter is updated, transmits a third signal according to second target power; monitors a second signal in a first time window; the first state comprises RRC_INACTIVE State; the first data comprises a small data packet; the first signal, the second signal and the third signal are used for random access procedure; the first counter is used to count a number of transmission(s) of a preamble sequence; the second counter is used to count a number of time(s) the first step-size is increased.

Claims18

Dependent claims

A user equipment (UE), comprising:

a transceiver;
and
a processor, wherein the transceiver and the processor are configured to:
perform a small data transmission (SDT) in a radio resource control (RRC) inactive (RRC_INACTIVE) state,
receive control information,
select a first step-size based on a sum of a first offset and a second step-size indicated by the control information,
on a condition that a first random access signal including a preamble is transmitted according to a first power, update a first counter of a number of transmissions of the preamble,
on a condition that the first counter is not greater than a first threshold and a second counter is updated, transmit a third random access signal including a preamble according to a second power, wherein the second counter is counter of a number of times the first step-size is increased,
on a condition that the first counter is greater than the first threshold, enter an RRC idle (RRC_IDLE) state, and
monitor a second random access signal in a first time window of slots, wherein a difference between the second power and the first power is associated with the first step-size.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/120,436Filed 13 Mar 2023 · continuation
Priority: CN 202010975488.516 Sep 2020
Published: US 2023/0217305 A16 Jul 2023
Granted: 18 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04W 28/06
Traffic management, e.g. flow control or congestion control: optimizing the usage of the radio link, e.g. header compression, information sizing ,…
H04W 24/02
Supervisory, monitoring or testing arrangements: arrangements for optimising operational condition
H04W 52/50
TPC being performed in particular situations: at the moment of starting communication in a multiple access environment
H04W 74/0833
Non-scheduled access, e.g. ALOHA: random access procedures, e.g. with 4-step access