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JP-7855008-B2 - User equipment, scheduling node, method for user equipment, and method for scheduling node

JP7855008B2JP 7855008 B2JP7855008 B2JP 7855008B2JP-7855008-B2

Inventors

  • シャー リキン
  • 鈴木 秀俊
  • タオ ミン－フン

Assignees

  • パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ

Dates

Publication Date
20260507
Application Date
20220328
Priority Date
20210331

Claims (11)

  1. User equipment (UE) , Transmitter and receiver, It is a circuit, During the procedure for transmitting the first data in an inactive state, it is detected that the second data will be transmitted in a connected state. Determine whether or not there is a transmission opportunity allocated by the base station for transmitting the first data. When it is determined that there is no opportunity to transmit the first data, a Random Access Channel (RACH) procedure is initiated to enter a connected state. When it is determined that the aforementioned transmission opportunity exists, the transceiver is controlled to use the transmission opportunity to transmit a traffic instruction indicating the detection of the second data. The aforementioned circuit, Equipped with, The procedure for transmitting the first data is a configured grant (CG) procedure for transmitting the first data, When the transceiver receives the delay threshold, The aforementioned circuit, If the time until the next resource in the CG procedure is less than the delay threshold, it is determined that a transmission opportunity exists, and the transceiver is controlled to use the transmission opportunity to transmit the traffic instruction. If the time until the next resource in the CG procedure is greater than the delay threshold, it is determined that there is no transmission opportunity, and the RACH procedure is started to enter the connection state. User equipment (UE) .
  2. The aforementioned traffic instruction, - Using the resources indicated by the uplink grant, at least a portion of the first data and/or, - Buffer status report (BSR) indicating the amount of the first data, Sent together with, The UE described in claim 1 .
  3. The RACH procedure is either a 4-step RACH procedure or a 2-step RACH procedure. The UE described in claim 1 .
  4. If the transceiver does not receive the delay threshold, The aforementioned circuit, If the next resource in the CG procedure is earlier than the next RACH resource, it is determined that a transmission opportunity exists, and the transceiver is controlled to use the transmission opportunity to transmit the traffic instruction. If the next resource in the CG procedure is slower than the next RACH resource, it is determined that there is no transmission opportunity, and the RACH procedure is started to enter the connection state. The UE described in claim 1.
  5. The aforementioned traffic instruction is signaled by a predefined value of the Logical Channel ID (LCID) in the MAC subheader. The predefined value of the LCID indicates that the second data has been detected. The UE described in claim 1 .
  6. The predefined value of the LCID indicates that the MAC control element CE is not attached to the MAC subheader. The UE described in claim 5 .
  7. The LCID indicates that the BSR MAC control element (CE) is attached to the MAC subheader. The BSR MAC CE indicates the amount of the first data to be transmitted further. The UE described in claim 5 .
  8. The aforementioned traffic instruction is part of the MAC control element (CE), - One bit of the MAC CE indicates whether the second data has been detected or not. - The two bits of the MAC CE indicate the first data logical channel group (LCG) among the LCGs that support data transmission in the inactive state. - The five bits of the MAC CE indicate the amount of the first data corresponding to the LCG shown above that will be transmitted further. The UE described in claim 1 .
  9. The traffic instruction is a Radio Resource Control (RRC) level instruction. The UE described in claim 1 .
  10. A method for user equipment (UE) , wherein the method comprises the following steps, namely: - A step of detecting that a second data is transmitted in a connected state during the procedure for transmitting a first data in an inactive state, The steps include determining whether or not there is a transmission opportunity allocated by the base station for transmitting the first data, When it is determined that there is no opportunity to transmit the first data, the steps include: initiating a Random Access Channel (RACH) procedure to enter a connection state; When it is determined that there is an opportunity to transmit the first data, the step of using the transmission opportunity to transmit a traffic instruction indicating the detection of the second data, Includes, The procedure for transmitting the first data is a configured grant (CG) procedure for transmitting the first data, When the UE receives the delay threshold, If the time until the next resource in the CG procedure is less than the delay threshold, it is determined that a transmission opportunity exists, and the traffic instruction is transmitted using the transmission opportunity. If the time until the next resource in the CG procedure is greater than the delay threshold, it is determined that there is no transmission opportunity, and the RACH procedure is started to enter the connection state. method.
  11. An integrated circuit that controls a process of a user device (UE) , wherein the process comprises the following steps, namely: The procedure for transmitting first data in an inactive state includes the step of detecting that second data is transmitted in a connected state, The steps include determining whether or not there is a transmission opportunity allocated by the base station for transmitting the first data, When it is determined that there is no opportunity to transmit the first data, the steps include: initiating a Random Access Channel (RACH) procedure to enter a connection state; When it is determined that there is an opportunity to transmit the first data, the step of using the transmission opportunity to transmit a traffic instruction indicating the detection of the second data, Includes, The procedure for transmitting the first data is a configured grant (CG) procedure for transmitting the first data, When the UE receives the delay threshold, If the time until the next resource in the CG procedure is less than the delay threshold, it is determined that a transmission opportunity exists, and the traffic instruction is transmitted using the transmission opportunity. If the time until the next resource in the CG procedure is greater than the delay threshold, it is determined that there is no transmission opportunity, and the RACH procedure is started to enter the connection state. Integrated circuit.

Description

This disclosure relates to the transmission and reception of signals in communication systems. In particular, this disclosure relates to methods and apparatus for such transmission and reception. The 3rd Generation Partnership Project (3GPP®) is developing technical specifications for next-generation mobile phone technologies, also known as 5G, including "New Radio" (NR) radio access technology (RAT) operating in a frequency range of up to 100 GHz. NR is a successor technology to technologies such as LTE (Long Term Evolution) and LTE Advanced (LTE-A). In systems such as LTE and NR, further improvements and options can facilitate the efficient operation of not only the communication system but also specific devices associated with the system. 3GPP TS 38.300 v15.6.03GPP TS 38.211 v15.6.03GPP TS 38.211, v 15.7.0ITU-R M.2083TR 38.913TS 23.501 v16.1.0TS 38.212 v15.6.03GPP TS 38.321 v15.8.0TS 38.331 v15.8.03GPP TS 38.321, v16.1.03GPP TS 38.211 V16.2.0TS 38.331 v16.1.0TS 38.331, v15.12.0 The following describes exemplary embodiments in more detail with reference to the attached figures and drawings. This shows an example architecture of a 3GPP NR system. This is a schematic diagram illustrating the functional separation between NG-RAN and 5GC. This is a sequence diagram of the RRC connection establishment/reconfiguration procedure. This is a schematic diagram illustrating usage scenarios for Enhanced Mobile Broadband (eMBB), Massive Machine Type Communications (mMTC), and Ultra Reliable and Low Latency Communications (URLLC). This is a block diagram showing an example 5G system architecture for a non-roaming scenario. This shows both a competition-based RACH procedure and a competition-free RACH procedure. This shows both a competition-based RACH procedure and a competition-free RACH procedure. This shows possible changes in the RRC state. This shows the message exchange during the RRC Resume procedure. This shows the message exchange during the RRC Release procedure. This shows the message exchange during the RRC Release procedure. This illustrates prior art message exchange for uplink data transmission, including a state change of the UE from an inactive state to a connected state. These show exemplary 4-step and 2-step RACHs that RRC_INACTIVE UE can use to uplink transmit small data, respectively. These show exemplary 4-step and 2-step RACHs that RRC_INACTIVE UE can use to uplink transmit small data, respectively. An exemplary SDT procedure is shown, which includes a single transmission of small data during the RACH procedure. An exemplary SDT procedure is shown, which includes multiple transmissions of small data during the RACH procedure. This shows an exemplary SDT procedure, including the transmission of small data during and after the RACH procedure. This block diagram shows an exemplary functional structure of network nodes and user equipment. This block diagram shows an exemplary functional structure of a circuit that processes incoming non-SDT DRB data, which can be included in the exemplary user device shown in Figure 18. This is a block diagram showing an exemplary functional structure of a traffic instruction processing circuit that can be included in the exemplary scheduling device of Figure 18. This flowchart illustrates exemplary steps performed by the user's device. This flowchart illustrates exemplary steps performed by network nodes. This shows the different timings at which non-SDT data arrives during the SDT procedure. This flowchart illustrates exemplary steps performed by the user's device. This shows an exemplary structure of a Msg3 message, including a MAC subframe that has a subheader indicating the arrival of a non-SDT DRB and does not have a CE. This shows an exemplary structure of a Msg3 message, including a MAC subframe that contains a subheader indicating the arrival of a non-SDT DRB and a CE indicating the buffer size of the SDT DRB data. The top panel shows an exemplary MAC CE structure for indicating the buffer size of a logical channel group, and the bottom panel shows an exemplary MAC CE structure for indicating the buffer size of a logical channel group and the arrival of non-SDT DRB data. This block diagram shows an exemplary functional structure of network nodes and user equipment. This block diagram shows an exemplary functional structure of a circuit that processes incoming non-SDT DRB data, which can be included in the exemplary user device shown in Figure 28. This is a block diagram showing an exemplary functional structure of a traffic instruction processing circuit that can be included in the exemplary scheduling device of Figure 28. This flowchart illustrates exemplary steps performed by the user's device. This flowchart illustrates exemplary steps performed by network nodes. This shows an exemplary logical channel configuration for UE. This is a schematic diagram showing the arrival of RA-SDT traffic. This is a schematic diagram illustrating an example of the process