# US 2025/0097930 A1 · Mechanism for configured grant transmission

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- Number: US 2025/0097930 A1
- Document ID: US20250097930A1
- Status: Published application
- Kind: A1
- Application number: 18/729,302
- Filed: 2022-01-17
- Published: 2025-03-20
- Earliest claimed: 2022-01-17
- Assignees: Nokia Technologies Oy
- Applicants: Nokia Technologies Oy
- Inventors: Samuli Heikki TURTINEN; Chunli WU; Jussi-Pekka KOSKINEN
- Web page: https://patentgrep.com/patent/US20250097930A1

## CPC

- H04W 72/115: Grant-free or autonomous transmission
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/38: triggered by timers
- H04W 56/0045: {compensating for timing error by altering transmission time}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Mechanism on configured grant transmissions is provided. According to embodiments of the present disclosure, after transmitting a configured grant transmission to the network device, the terminal device receives a response to the configured grant transmission. In some embodiments, if the response comprises a timing advance command, the timer for validity of the configured grant transmission is stopped. Alternatively, if the response does not comprise a timing advance command, the timer for validity of the configured grant transmission is stopped and the resources for the configured grant transmission are released. In this way, the terminal device only needs to maintain one timer during the configured grant transmission procedure.

## Claims

### Claim at position 1

-22. (canceled)

### Claim 23

A first device comprising:
a processor; and
a memory comprising computer-executable instructions that, when executed by the processor, cause the first device to perform the following operations:
while the first device is in a radio resource control (RRC) connected state, transmit a configured grant type that indicates pre-configured PUSCH resources to be used for uplink data transmission in an RRC Inactive state as long as a timing alignment of the first device is valid, enabling a second device to transmit an RRC release message, wherein the pre-configured PUSCH resources comprise the following parameters: a configured scheduling radio network temporary identifier (CS-RNTI) for retransmission; periodicity of the configured grant type; an offset of a resource with respect to a system frame number in time domain; time-domain parameters that include a start symbol and a length of an assignment; and a number of hybrid automatically repeat request (HARQ) processes;
transmit, from the first device, a message to the second device when the first device is in the RRC inactive state, wherein the message comprises a preamble for a random access channel (RACH);
receive, from the second device, a random access response;
transmit, to the second device, an RRC connection resume request;
receive, from the second device, a configuration indicating a set of resources allocated for a configured grant transmission;
during a running time of a first timer for validity of the set of resources, transmit the configured grant transmission to the second device based on the set of resources;
receive from the second device a response for the configured grant transmission;
determine that the response does not comprise a timing advance command;
based on determining that the response does not comprise the timing advance command:
stopping the first timer for validity of a configured grant based small stat transmission (CG-SDT); and
receive an indication that the set of resources for the configured grant transmission is released, wherein the set of resources for the configured grant transmission is released without RRC reconfiguration.

### Claim 24 (depends on 23)

The first device of claim 23, wherein the computer-executable instructions further cause the first device to:
start a second timer for timing alignment upon reception of the timing advance command from the second device.

### Claim 25 (depends on 24)

The first device of claim 24, wherein the second timer is a timing alignment timer (TAT).

### Claim 26 (depends on 25)

The first device of claim 25, wherein the timing advance command remains valid as long as the second timer is running, and wherein the timing advance command is no longer valid after the second timer expires.

### Claim 27 (depends on 26)

The first device of claim 26, wherein the set of resources is only valid during the running time of the first timer.

### Claim 28 (depends on 27)

The first device of claim 27, wherein the configured grant transmission is a configured grant small data transmission.

### Claim 29 (depends on 28)

The first device of claim 28, wherein the first device comprises a terminal device and the second device comprises a network device.

### Claim 30

A system comprising:
a first device;
a processor; and
a memory comprising computer-executable instructions that, when executed by the processor, cause the first device to perform the following operations:
while the first device is in a radio resource control (RRC) connected state, transmit a configured grant type that indicates pre-configured PUSCH resources to be used for uplink data transmission in an RRC Inactive state as long as a timing alignment of the first device is valid, enabling a second device to transmit an RRC release message, wherein the pre-configured PUSCH resources comprise the following parameters: a configured scheduling radio network temporary identifier (CS-RNTI) for retransmission; periodicity of the configured grant type; an offset of a resource with respect to a system frame number in time domain; time-domain parameters that include a start symbol and a length of an assignment; and a number of hybrid automatically repeat request (HARQ) processes;
transmit, from the first device, a message to the second device when the first device is in the RRC inactive state, wherein the message comprises a preamble for a random access channel (RACH);
receive, from the second device, a random access response;
transmit, to the second device, an RRC connection resume request;
receive, from the second device, a configuration indicating a set of resources allocated for a configured grant transmission;
during a running time of a first timer for validity of the set of resources, transmit the configured grant transmission to the second device based on the set of resources;
receive from the second device a response for the configured grant transmission;
determine that the response does not comprise a timing advance command;
based on determining that the response does not comprise the timing advance command:
stopping the first timer for validity of a configured grant based small stat transmission (CG-SDT); and
receive an indication that the set of resources for the configured grant transmission is released, wherein the set of resources for the configured grant transmission is released without RRC reconfiguration.

### Claim 31 (depends on 30)

The system of claim 30, wherein the computer-executable instructions further cause the first device to:
start a second timer for timing alignment upon reception of the timing advance command from the second device.

### Claim 32 (depends on 31)

The system of claim 31, wherein the second timer is a timing alignment timer (TAT).

### Claim 33 (depends on 32)

The system of claim 32, wherein the timing advance command remains valid as long as the second timer is running, and wherein the timing advance command is no longer valid after the second timer expires.

### Claim 34 (depends on 33)

The system of claim 33, wherein the set of resources is only valid during the running time of the first timer.

### Claim 35 (depends on 34)

The system of claim 34, wherein the configured grant transmission is a configured grant small data transmission.

### Claim 36 (depends on 35)

The system of claim 35, wherein the first device comprises a terminal device and the second device comprises a network device.

### Claim 37

A method comprising:
while a first device is in a radio resource control (RRC) connected state, transmitting a configured grant type that indicates pre-configured PUSCH resources to be used for uplink data transmission in an RRC Inactive state as long as a timing alignment of the first device is valid, enabling a second device to transmit an RRC release message, wherein the pre-configured PUSCH resources comprise the following parameters: a configured scheduling radio network temporary identifier (CS-RNTI) for retransmission; periodicity of the configured grant type; an offset of a resource with respect to a system frame number in time domain; time-domain parameters that include a start symbol and a length of an assignment; and a number of hybrid automatically repeat request (HARQ) processes;
transmitting, from the first device, a message to the second device when the first device is in the RRC inactive state, wherein the message comprises a preamble for a random access channel (RACH);
receiving, from the second device, a random access response;
transmitting, to the second device, an RRC connection resume request;
receiving, from the second device, a configuration indicating a set of resources allocated for a configured grant transmission;
during a running time of a first timer for validity of the set of resources, transmitting the configured grant transmission to the second device based on the set of resources;
receiving from the second device a response for the configured grant transmission;
determining that the response does not comprise a timing advance command;
based on determining that the response does not comprise the timing advance command:
stopping the first timer for validity of a configured grant based small stat transmission (CG-SDT); and
receiving an indication that the set of resources for the configured grant transmission is released, wherein the set of resources for the configured grant transmission is released without RRC reconfiguration.

### Claim 38 (depends on 37)

The method of claim 37, further comprising starting a second timer for timing alignment upon reception of the timing advance command from the second device.

### Claim 39 (depends on 38)

The method of claim 38, wherein the second timer is a timing alignment timer (TAT).

### Claim 40 (depends on 39)

The method claim 39, wherein the timing advance command remains valid as long as the second timer is running, and wherein the timing advance command is no longer valid after the second timer expires.

### Claim 41 (depends on 40)

The method of claim 40, wherein the set of resources is only valid during the running time of the first timer.

### Claim 42 (depends on 41)

The method of claim 41, wherein the configured grant transmission is a configured grant small data transmission.