Communications with preconfigured uplink resources

Patent metadata

Field	Value
Publication number	US-12495397-B2
Application number	US-201817292766-A
Country	US
Kind code	B2
Filing date	Nov 12, 2018
Priority date	Nov 12, 2018
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

Embodiments of the present disclosure relate to communications with preconfigured uplink resources (PUR). A method implemented at a terminal device comprises identifying a need to change a transmission configuration of the terminal device, the terminal device being in a transmission mode with a set of preconfigured uplink resources (PURs) allocated for the terminal device to transmit user data to a network device; and in response to identifying the need to change the transmission configuration, transmitting control information to the network device using a first PUR in the set of PURs, the control information comprising information relevant to the change of the transmission configuration. In this way, it is possible to enable the terminal device to save power, time, and resources by bypassing a full random access procedure when the transmission configuration is needed to be changed.

First claim

What is claimed is:

1 . A method, comprising:
identifying, by a terminal device, a need to change a transmission configuration of the terminal device, the terminal device being in a transmission mode with a set of preconfigured uplink resources (PURs) allocated for the terminal device to transmit user data to a network device, wherein the terminal device is allowed to transmit uplink data using the set of PURs without requiring to establish a Radio Resource Control (RRC) connection; and in response to identifying the need to change the transmission configuration, transmitting, by the terminal device, without establishing the RRC connection, control information to the network device using a first PUR in the set of PURs, the control information comprising information relevant to the change of the transmission configuration, wherein the control information indicates a RRC Connection request, wherein transmitting the control information by the terminal device comprises transmitting, using the first PUR, the control information indicating the RRC Connection request with a first transport block size (TBS) that is dedicated for transmission of the control information, the first TBS being smaller than a second TBS used for transmission of the user data.

2 . The method of claim 1 , wherein transmitting the control information comprises:
detecting whether acknowledgement (ACK) information indicating successful transmission of the user data using a second PUR in the set of PURs is received from the network device; and in response to the ACK information being received, transmitting the control information using the first PUR, the first PUR following the second PUR.

3 . The method of claim 1 , wherein transmitting the control information comprises:
transmitting the control information in a header of a transport block for the user data.

4 . The method of claim 1 , wherein the control information indicates a request to change a connection status with the network device, the method further comprising:
receiving feedback information comprising an indication of whether the connection status is successfully changed.

5 . A terminal device, comprising:
at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code being configured to, with the at least one processor, cause the device to
identify a need to change a transmission configuration of the terminal device, the terminal device being in a transmission mode with a set of preconfigured uplink resources (PURs) allocated for the terminal device to transmit user data to a network device, wherein the terminal device is allowed to transmit uplink data using the set of PURs without requiring to establish a Radio Resource Control (RRC) connection;
in response to identifying the need to change the transmission configuration, transmit, without establishing the Radio Resource Control (RRC) connection, control information to the network device using a first PUR in the set of PURs, the control information comprising information relevant to the change of the transmission configuration, wherein the control information indicates a RRC Connection request, and
transmit, using the first PUR, the control information indicating the RRC Connection request with a first transport block size (TBS) that is dedicated for transmission of the control information, the first TBS being smaller than a second TBS used for transmission of the user data.

6 . The device of claim 5 , wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the device to:
detect whether acknowledgement (ACK) information indicating successful transmission of the user data using a second PUR in the set of PURs is received from the network device; and in response to the ACK information being received, transmit the control information using the first PUR, the first PUR following the second PUR.

7 . The device of claim 5 , wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the device to:
transmit the control information in a header of a transport block for the user data.

8 . The device of claim 5 , wherein the control information indicates a request to change a connection status with the network device, and the at least one memory and the computer program code are configured to, with the at least one processor, further cause the device to:
receive feedback information comprising an indication of whether the connection status is successfully changed.

9 . The device of claim 5 , wherein the control information indicates at least one of a request to adjust a location in time or frequency of at least one of the set of PURs, a request to allocate an additional PUR, a request to release at least one of the set of PURs, and a request to update timing alignment offset with the network device.

10 . The device of claim 9 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, further cause the device to receive feedback information comprising:
an indication of at least one of the adjusted location and a new location in time or frequency of the additional PUR, the at least one of the adjusted location and the new location being indicated by using a location of a predetermined PUR in the set of PURs as a reference.

11 . A network device, comprising:
at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code being configured to, with the at least one processor, cause the device to
receive, from a terminal device in a transmission mode without establishing a Radio Resource Control (RRC) connection, an uplink signal on a first preconfigured uplink resource (PUR) in a set of PURs, the set of PURs being allocated in the transmission mode for the terminal device to transmit user data to the network device, wherein uplink data is also received from the terminal device using the set of PURs without requiring to establish the RRC connection,
detect control information from the received uplink signal, the control information comprising information relevant to a change of the transmission configuration in the transmission mode, wherein the control information indicates a RRC Connection request,
perform blind decoding on the received uplink signal with each of a first transport block size (TBS) and a second TBS, the first TBS being smaller than the second TBS, the first TBS being dedicated for transmission of the control information, and the second TBS being available for transmission of the user data, and
in response to the received uplink signal being successfully decoded with the first TBS, detect a result of the decoding as the control information.

12 . The device of claim 11 , wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the device to:
determine whether acknowledgement (ACK) information indicating successful transmission of the user data on a second PUR in the set of PURs is transmitted to the terminal device, the first PUR following the second PUR; and in response to the ACK information being transmitted, decode the received uplink signal to obtain the control information.

13 . The device of claim 11 , wherein the at least one memory and the computer program code are further configured to, with the at least one processor, cause the device to:
detect the control information in a header of a transport block for

Assignees

• Nokia Technologies Oy

Inventors

• Bhatoolaul David
• Ratasuk Rapeepat
• Selvaganapathy Srinivasan
• Li Haitao
• Baker Matthew

Classifications

• H04L1/1607

  Details of the supervisory signal · CPC title

• Y02D30/70

  in wireless communication networks · CPC title

• H04L1/1671

  the supervisory signal being transmitted together with control information · CPC title

• H04W72/044

  based on the type of the allocated resource · CPC title

• H04W72/04 Primary

  Wireless resource allocation · CPC title