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Data transmission method and device and wireless access network node

A data transmission method and wireless access network technology, applied in the field of communication, can solve problems such as cumbersome data transmission process

Active Publication Date: 2020-10-09
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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  • Data transmission method and device and wireless access network node
  • Data transmission method and device and wireless access network node
  • Data transmission method and device and wireless access network node

Examples

Experimental program
Comparison scheme
Effect test

example 1

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

[0264] like Image 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 Node B, it triggers the RRC connection recovery process by itself or by paging, sends an RRC recovery request message to 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 a request message for extracting user terminal context to Node A, which indicates that the RRC connection recovery procedure...

example 2

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

[0275] like 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 Node B, it triggers the RRC connection recovery process by itself or by paging, sends an RRC recovery request message to Node B, and indicates that the RRC connection recovery process is intended to transmit a small amount of user data.

[0278] Step 73: Node B generates cell group configuration in...

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] like 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 RAN paging process of the radio access network, and sends a RAN paging message (that is, the fifth interface message above, but the name is not ...

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Abstract

The invention provides a data transmission method and device and a wireless access network node. The method comprises the steps: receiving a request message, transmitted by a second wireless access network node, for extracting the context of a user terminal; generating a first radio resource control RRC message according to the user terminal context extraction request message; sending a first interface message to a second radio access network node according to the first RRC message, wherein the first interface message comprises a first RRC message, and the first RRC message comprises first cell group configuration information; a first radio access network node holding an access layer context of the user terminal, and the user terminal being in an RRC inactive state. According to the scheme, an anchor point transfer process during data transmission in an RRC Inactive state can be avoided, and user data is transmitted in a relay mode of an anchor point node and a current access node by directly using a mode similar to an SCG bearing mode terminated at an MN in a dual-connection architecture; and the problem that in the prior art, the data transmission process in the RRC Inactive state is tedious is well solved.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a data transmission method, a device and a wireless access network node. Background technique [0002] A new RRC (Radio Resource Control) state is defined in the New Radio (NR, new air interface) network: RRCInactive (RRC inactive state). A node in the radio access network can send an RRC Release (RRC Release) message carrying a SuspendConfig IE (ie, a suspend indication) to a user terminal (UE) in the RRC Connected state (RRC Connected state) to indicate that it enters the 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-mentioned RRC Release message also includes radio access network notification area (RNA) configuration information, and the user terminal does not need to perform any communication with the network side when moving within the configured ...

Claims

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Application Information

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Patent Type & Authority Applications(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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