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Data transmission method and device in RRC inactive state, terminal and equipment

A data transmission method, an inactive technology, applied in connection management, advanced technology, climate sustainability, etc., which can solve the problems of prolonged establishment, cumbersome context transfer process, high signaling overhead, etc.

Active Publication Date: 2019-12-31
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a data transmission method, device, terminal and equipment in an RRC inactive state, so as to solve the problem in the prior art that when the user terminal is in the RRC Inactive state and triggers the RRC connection recovery process, the anchor node will transfer the user terminal The context information is moved to the service node where the user terminal is currently located. The context transfer process is cumbersome, with long setup delay and high signaling overhead.

Method used

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  • Data transmission method and device in RRC inactive state, terminal and equipment
  • Data transmission method and device in RRC inactive state, terminal and equipment
  • Data transmission method and device in RRC inactive state, terminal and equipment

Examples

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Effect test

Embodiment approach 1

[0264] By adopting the data transmission method in the RRC inactive state according to the embodiment of the present invention, the radio access network area can be updated.

[0265] Such as Figure 8 As shown, specifically, the data transmission method includes:

[0266] S810: The first node device in the radio access network sends an RRC Release message to the terminal, instructing the terminal to enter (or maintain) the RRC Inactive state; therefore, the first node device has the terminal context and becomes the anchor node of the terminal;

[0267] S820: After the terminal moves to the coverage area of ​​the second node device, it sends an RRC recovery request to the second node device; optionally, the RRC recovery request indicates that the reason for the RRC recovery request is that the radio access network notifies the area update; based on this, The second node device becomes the current service node of the terminal;

[0268] S830: The second node device sends a "Retrieve UE C...

Embodiment approach 2

[0274] By adopting the data transmission method in the RRC inactive state according to the embodiment of the present invention, the transmission of the RRC connection release message triggered by the core network can be performed.

[0275] Specifically, such as Picture 9 As shown, the method includes:

[0276] S910: The first node device in the radio access network sends an RRC Release message to the terminal, instructing the terminal to enter (or maintain) the RRC Inactive state; therefore, the first node device has the terminal context and becomes the anchor node of the terminal;

[0277] S920: After the terminal moves to the coverage area of ​​the second node device, the core network sends a message to the radio access network indicating that the RRC connection of the terminal needs to be released; currently, the second node device becomes the current serving node of the terminal, and the first node device Able to obtain messages sent by the core network;

[0278] S930: The first ...

Embodiment approach 3

[0288] Using the data transmission method in the RRC inactive state described in the embodiment of the present invention, the uplink NAS message can be transmitted through the default SRB1.

[0289] Specifically, such as Picture 10 As shown, the method includes:

[0290] S1010: The first node device in the radio access network sends an RRC Release message to the terminal, instructing the terminal to enter (or maintain) the RRC Inactive state; therefore, the first node device has the terminal context and becomes the anchor node of the terminal;

[0291] S1020: After the terminal moves to the coverage area of ​​the second node device, when it needs to send uplink NAS messages and the number of sent NAS messages is small, the terminal may determine that it does not need to enter the RRC Connected state, and send an RRC to the second node device A recovery request, and the RRC recovery request includes preset indication information, which is used to indicate that the RRCConnected state ...

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Abstract

The invention provides a data transmission method and device in an RRC inactive state, a terminal and equipment. The method comprises the following steps: if a terminal context recovery request message sent by a second node device is obtained, sending an interface message comprising at least one packet data convergence protocol PDCP protocol data unit PDU to the second node device in response to the terminal context recovery request message; wherein the second node device is a current service node of a terminal in an RRC inactive state, and the first node device is an anchor node of the terminal. Data interaction is carried out among the terminal, the anchor node and the current service node in a PDCP PDU form, so that the problems of relatively tedious context transfer process, relativelylong establishment time delay and relatively high signaling overhead in the prior art can be solved.

Description

Technical field [0001] The present invention relates to the field of wireless technology, and in particular to a data transmission method, device, terminal and equipment in a radio resource control (Radio Resource Control, RRC) inactive state. Background technique [0002] A new radio resource control RRC state is defined in the New Radio (NR) network: the RRC inactive state. A node in the radio access network can send an RRC Release message carrying "SuspendConfig" to a User Equipment (UE) (also called a user terminal) in the RRC connected state to instruct it to enter RRC Inactive state. After that, the node is the anchor node of the user terminal, and the context information of the user terminal is stored. The above RRC Release message also contains radio access network notification area (RAN Notification Area, RNA) configuration information, and the user terminal does not need to communicate with the network side when it moves within the configured RNA range. [0003] In the...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W76/27
CPCH04W76/27H04W36/0033H04W76/12H04W48/20H04W92/20H04W36/0055
Inventor 周叶孙建成
Owner DATANG MOBILE COMM EQUIP CO LTD
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