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Mobility management method among wireless access networks, core network device and base station

A wireless access network and management method technology, applied in the field of core network equipment and base stations, can solve the problems of inability to work normally, uncertain terminal behavior, and inability of the terminal to continue to remain inactive state, etc.

Active Publication Date: 2018-10-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0013] From the above analysis, it can be seen that the existing technology only defines the inactive state of the NR system. When the UE in the inactive state moves from the NR system to other communication systems (such as the LTE / eLTE system), since other communication systems do not have an inactive state, The terminal will not be able to remain inactive. At this time, the behavior of the terminal is uncertain and cannot work normally.

Method used

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  • Mobility management method among wireless access networks, core network device and base station
  • Mobility management method among wireless access networks, core network device and base station
  • Mobility management method among wireless access networks, core network device and base station

Examples

Experimental program
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Embodiment 1

[0144] This example is aimed at figure 2 and image 3 The application scenarios shown illustrate the behavior on the endpoint side.

[0145] An embodiment of the present invention provides an inter-RAN mobility management method, which is applied between RANs based on different RATs. Specifically, the above-mentioned RAN includes a first RAN and a second RAN, wherein the first RAN is a new air interface NR The RAN of the system, the second RAN may be the RAN of the 3G system or the 4G system, or may be the RAN of the LTE system or the eLTE system. Subsequent embodiments herein will mainly be described by taking the LTE system and the eLTE system as examples. It should be pointed out that the second RAN in the embodiment of the present invention is not limited to the RAN of the LTE system and the eLTE system.

[0146] Please refer to Figure 4 , the mobility management method provided by the embodiment of the present invention, when applied to the terminal side, includes t...

Embodiment 2

[0170] This example is aimed at figure 2 The application scenarios shown illustrate the core network behavior on the NR side.

[0171] Please refer to Figure 5 The embodiment of the present invention provides a method for managing mobility between RANs in a radio access network, where the RANs include a first RAN and a second RAN. Here, the first RAN is the RAN of the NR system, and the second RAN is the RAN of the eLTE. The mobility management method is applied to the first core network side of the NR system, and includes the following steps:

[0172] Step 51: The first core network of the NR system receives a paging failure message sent by the first base station in the first RAN when it cannot page the first terminal in an inactive state within the RAN-level location area RNA, and the The first base station is a base station that stores user context information of the first terminal in the NR system.

[0173] Step 52, the first core network initiates paging for the fir...

Embodiment 3

[0185] This example is aimed at image 3 The application scenarios shown illustrate the core network behavior on the NR side.

[0186] Please refer to Figure 6 The embodiment of the present invention provides a method for managing mobility between RANs in a radio access network, where the RANs include a first RAN and a second RAN. Here, the first RAN is the RAN of the NR system, and the second RAN is the RAN of the LTE system. The mobility management method is applied to the first core network side of the NR system, and includes the following steps:

[0187] Step 61, the first core network of the NR system receives a reminder message sent by the terminal in the second RAN during the RRC connection establishment process, the reminder message is used to remind the first base station in the first RAN, so The first base station is a base station that stores user context information of the terminal in the NR system.

[0188] Here, the RRC connection establishment process may b...

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Abstract

The invention provides a mobility management method among wireless access networks, a core network device and a base station. When inter-RAT movement of a terminal in an inactive state occurs, the user context information of the terminal when the terminal is in the inactive state in the NR system is still kept, and the user context information is deleted until certain conditions are met. The inter-RAT mobility management of a terminal in an inactive state can be realized, and inter-RAT mobility problem is solved, and the terminal can work normally.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobility management method between wireless access networks, core network equipment and a base station. Background technique [0002] With the development of wireless communication systems, terminal types and service types are diversified, and terminal power saving, saving network resources and meeting the needs of various service types coexist. In order to ensure terminal power saving and fast data transmission at the same time, a new mobility state is introduced into the New Radio Access Technology (New RAT) of the 5G New Radio (NR) system: RRC_INACTIVE (also called inactive state in this paper) or inactive state). [0003] In the inactive state, the terminal maintains the core network connection, but does not perform routine operations in the air interface connection state (such as handover, uplink timing update, wireless link monitoring, etc.), and does not al...

Claims

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Application Information

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IPC IPC(8): H04W36/14H04W76/27
CPCH04W36/14H04W88/06H04W4/00
Inventor 梁靖
Owner DATANG MOBILE COMM EQUIP CO LTD
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