Mechanism for configured grant transmission

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.

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.

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.