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A data transmission method, device and wireless access network node

A data transmission method and wireless access network technology, applied in the field of communication, can solve the problems of cumbersome data transmission process, and achieve the effect of solving the cumbersome data transmission process, avoiding the context transfer process, and simplifying the process.

Active Publication Date: 2021-11-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a data transmission method, device and wireless access network node, to solve the problem of cumbersome data transmission process in the RRC Inactive state in the prior art

Method used

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  • A data transmission method, device and wireless access network node
  • A data transmission method, device and wireless access network node
  • A data transmission method, device and wireless access network node

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0263] Example 1: The anchor node (that is, the above-mentioned first radio access network node, the following node A) requests the access node (that is, the second radio access network node, the following node B) to configure a cell group.

[0264] Such as Figure 6 shown, including:

[0265] Step 61: Node A in the radio access network owns the user terminal context and is the anchor node of the user terminal. Node A sends an RRC Release (RRC Release) message to the user terminal, and the message instructs the user terminal to enter (or maintain) the RRC Inactive state.

[0266] Step 62: After the user terminal moves to the Node B, it triggers the RRC connection recovery process by itself, or triggers the RRC connection recovery process by paging, sends an RRC recovery request message to the Node B, and indicates that the RRC connection recovery process is intended to transmit a small amount of user data.

[0267] Step 63: Node B sends an extract UE context request message ...

example 2

[0274] Example 2: The access node (that is, the above-mentioned second radio access network node, the following node B) generates cell group configuration information by itself and transmits it to the anchor node (that is, the above-mentioned first radio access network node, and the following node A) .

[0275] Such as Figure 7 shown, including:

[0276] Step 71: Node A in the radio access network owns the user terminal context and is the anchor node of the user terminal. Node A sends an RRC Release (RRC Release) message to the user terminal, and the message instructs the user terminal to enter (or maintain) the RRC Inactive state.

[0277] Step 72: After the user terminal moves to the Node B, it triggers the RRC connection recovery process by itself, or triggers the RRC connection recovery process by paging, sends an RRC recovery request message to the Node B, and indicates that the RRC connection recovery process is intended to transmit a small amount of user data.

[02...

example 3

[0283] Example 3: The anchor node (that is, the above-mentioned first radio access network node, the following node A) requests the access node (that is, the above-mentioned second radio access network node, the following node B) to configure a cell group in a paging message .

[0284] Such as Figure 8 shown, including:

[0285] Step 81: Node A in the radio access network owns the user terminal context and is the anchor node of the user terminal. Node A sends an RRC Release (RRC Release) message to the user terminal, and the message instructs the user terminal to enter (or maintain) the RRC Inactive state.

[0286] Step 82: After the user terminal moves to node B, downlink user data arrives at node A from the core network, and the data includes an indication that the amount of user data is small.

[0287] Step 83: Node A triggers the radio access network RAN ​​paging process, and sends a RAN paging message ((that is, the fifth interface message above, but the name is not l...

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Abstract

The present invention provides a data transmission method, device, and wireless access network node, wherein the data transmission method includes: receiving a user terminal context extraction request message sent by a second wireless access network node; according to the user terminal context extraction request message, Generate a first radio resource control RRC message; send a first interface message to a second radio access network node according to the first RRC message; the first interface message includes the first RRC message, and the first RRC message includes the configuration information of the first cell group , the first radio access network node holds the access layer context of the user terminal, and the user terminal is in an RRC inactive state. This solution can avoid the anchor point transfer process during data transmission in the RRC Inactive state, but directly uses the SCG bearer mode similar to the dual-connection architecture that terminates at the MN, and transmits in a relay mode between the anchor node and the current access node User data: well solved the problem of cumbersome data transmission process in the RRC Inactive state in the prior art.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method, device and wireless access network node. Background technique [0002] In the New Radio (NR, new air interface) network, a new RRC (Radio Resource Control) state is defined: RRCInactive (RRC inactive state). A node in the radio access network can send an RRC Release (RRC release) message carrying a SuspendConfig IE (that is, a suspension indication) to a user terminal (UE) in the RRC Connected state (RRC connected state) to instruct it to enter RRC inactive state. Afterwards, the node is the anchor node of the user terminal, storing the context information of the user terminal. The above RRC Release message also includes radio access network notification area (RNA) configuration information, and the user terminal does not need to communicate with the network side when moving within the range of the configured RNA. [0003] During this...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W48/08H04W76/27
CPCH04W48/08H04W76/27
Inventor 周叶许萌傅婧孙建成
Owner DATANG MOBILE COMM EQUIP CO LTD
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