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Method and device for transmitting data in inactive state and user equipment

A data transmission, non-activation technology, used in connection management, advanced technology, climate sustainability, etc., can solve problems such as inability to know and resources to be used

Active Publication Date: 2019-08-16
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the UE may move and the UE cannot know its uplink advance TA (Timing Advance) when the UE is idle, the previously allocated resources may not be available

Method used

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  • Method and device for transmitting data in inactive state and user equipment
  • Method and device for transmitting data in inactive state and user equipment
  • Method and device for transmitting data in inactive state and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a method for transmitting data in an inactive state, such as figure 2 As shown, the method includes:

[0062] S21. The UE performs random access in the RRC_INACTIVE state, and sends a random access preamble to the base station (gNB).

[0063] S22. After receiving the random access preamble sent by the UE, the base station sends a random access response to the UE.

[0064] S23. The UE sends MSG3 (RRC message) to the base station according to the resource allocation information in the random access response, wherein MSG3 carries an INACTIVE transmission data flag, which is used to indicate that the purpose of the current request is to perform data transmission in the INACTIVE state.

[0065] In addition to the flag indicating data transmission in INACTIVE, the UE can also include a BSR (BufferStatus Report, buffer status report) in MSG3, so as to let the base station know the size of the data to be sent by the UE. Sometimes because the BSR has ...

Embodiment 2

[0075] This embodiment provides a method for transmitting data in an inactive state, such as image 3 As shown, the method includes:

[0076] S31. The UE performs random access in the RRC_INACTIVE state, and sends a random access preamble to the base station (gNB).

[0077] S32. After receiving the random access preamble sent by the UE, the base station sends a random access response to the UE.

[0078] S33. The UE sends MSG3 (RRC message) to the base station, where MSG3 carries some auxiliary information.

[0079] The auxiliary information may include the amount of data to be transmitted, and may also include a DRB ID (Data Radio Bearer Identity, data radio bearer identity) that triggers data transmission.

[0080] S34. After receiving the MSG3 sent by the UE, the base station judges whether to transmit data in INACTIVE according to the auxiliary information carried in MSG3, and after judging that the UE can transmit data in INACTIVE, sends MSG4 to the UE to allocate resour...

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Abstract

The invention provides a method and a device for transmitting data in an inactive state and user equipment. The method comprises the following steps: after a random access preamble is sent to a base station and a random access response returned by the base station is received, sending MSG3 to the base station; receiving an MSG4 sent by the base station after the base station judges that the UE cansend data in an INACTIVE state, the MSG4 carrying resource allocation information, and the resource corresponding to the resource allocation information being a Grant Free resource or a UL Grant resource; and sending data to the base station by using the Grant Free resource or the UL Grant resource. According to the invention, data transmission in a non-activated state can be ensured under the condition that resources are reasonably utilized.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, device and user equipment for transmitting data in an inactive state. Background technique [0002] With the development of wireless communication technology, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) introduces NR (New Radio, new air interface) technology. In NR, RRC (Radio Resource Control, radio resource control) supports 3 states: RRC_IDLE (idle state), RRC_INACTIVE (inactive state), RRC_CONNECTED (connected state). In the RRC_INACTIVE state, the UE is still CM-CONNECTED and can move within the RNA (RAN-based Notification Area, radio access network-based notification area) configured by the base station without notifying the base station. And the last serving base station maintains the context of the UE and the NG connection (the connection between the base station and the AMF / UPF) related to the UE. The A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W74/00H04W74/08H04W72/06
CPCH04W74/002H04W74/0833H04W76/27H04W72/563H04W72/53H04W72/20Y02D30/70
Inventor 韩传华邓云范伟
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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