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Cross-RAT terminal state determination method and network device

A determination method, technology of network equipment, applied in the field of communication

Active Publication Date: 2018-07-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] Embodiments of the present invention provide a cross-RAT terminal state determination method and network equipment, which are used to solve the state transfer problem when the terminal moves between different systems, so that the terminal can still work normally when moving between different systems, and avoid The delay and signaling overhead caused by new radio resources and security reconfiguration are eliminated

Method used

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  • Cross-RAT terminal state determination method and network device
  • Cross-RAT terminal state determination method and network device
  • Cross-RAT terminal state determination method and network device

Examples

Experimental program
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Effect test

Embodiment 1

[0161] Embodiment 1: The terminal moves between the cells of the LTE eNB and the NR gNB, and the LTE eNB and the NR gNB are respectively connected to the EPC and the NGC.

[0162] Step 1: The terminal moves from the source RAT cell to the target RAT cell, and initiates an RRC message to transmit information used to obtain the terminal context, including the terminal identifier, and / or the source PLMN identifier, and / or the ShortMAC-I of the source RAT base station, and / or core network location area identifier. At this point, the target RAT base station can obtain the information from the RRC message.

[0163] Step 2: The target RAT base station sends the request information for obtaining the terminal context to the target RAT core network. After the target RAT core network obtains the terminal context from the source RAT core network through the interface between the target RAT core network and the source RAT core network, a new terminal NAS is created. context, and send the...

Embodiment 2

[0170] Embodiment 2: The terminal moves between the cells of the eLTEeNB and the NR gNB, and the eLTEeNB and the NR gNB are simultaneously connected to the same NGC.

[0171] Step 1: The terminal moves from the source RAT cell to the target RAT cell, initiates an access network location area update, and transmits the information used to obtain the terminal context, including the terminal identity, in the RRC message transmitting the access network location area update, and / or Or the source PLMN identifier, and / or the ShortMAC-I of the source RAT base station.

[0172] Step: 2: the target RAT base station sends the request information of acquiring terminal context to NGC, and the target RAT core network sends the terminal AS context to the target RAT base station;

[0173] Step 3: The target RAT base station performs mapping according to the obtained terminal AS context, including:

[0174] 1) Adopt the default RRC configuration under the target RAT, including default SRB (Sig...

Embodiment 3

[0179] Embodiment 3: The terminal moves between the cells of the eLTEeNB and the NR gNB, the eLTEeNB and the NR gNB are simultaneously connected to the same NGC, and there is an interface between the eLTEeNB and the NR gNB.

[0180] Step 1: The terminal moves from the source RAT cell to the target RAT cell, initiates an access network location area update, and transmits the information used to obtain the terminal context, including the terminal identity, in the RRC message transmitting the access network location area update, and / or Or the source PLMN identifier, and / or the ShortMAC-I of the source RAT base station.

[0181] Step: 2: the target RAT base station sends the request information for obtaining the terminal context to NGC and other base stations with an Xn interface with it, and the source RAT base station sends the terminal AS context to the target RAT base station;

[0182] Step 3: The target RAT base station performs mapping according to the obtained terminal AS c...

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Abstract

The invention discloses a cross-RAT terminal state determination method and a network device, so as to solve the state transition problem when a terminal moves among RATs. The method comprises steps:when a terminal in an inactive state or a light connection state in a first network system enters a second network system different from the first network system from the first network system, the network side of the second network system receives information required for acquiring source AS context information and reported by the terminal, wherein the inactive state or the light connection stateis used for characterizing a state in which a network node releases the RRC connection of the terminal but the terminal and the network node store the AS context information of the terminal under thenetwork node; and based on the information, the network side acquires the source AS context information of the terminal, and the source AS context information is mapped.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a cross-RAT terminal state determination method and network equipment. Background technique [0002] 1. Interface introduction in NextGen network architecture [0003] Such as figure 1 As shown, it is the interface in the NextGen network architecture, where NG2 is the control plane interface between the RAN and the core network; NG3 is the user plane interface between the RAN and the core network; gNB is the base station in the New RAT (NR) system. [0004] 2. Introduction to the cross-RAT network architecture of NR and eLTE / LTE [0005] figure 2 An architecture in which both the NR base station gNB and the eLTE base station eLTEeNB are connected to the 5G core network NGC (NextGen Core), where Figure 2A-Figure 2D Four specific architectural solutions for gNB and eLTEeNB to connect to NGC; image 3 An architecture for simultaneous connection of gNB and LTEeN...

Claims

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Application Information

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IPC IPC(8): H04W36/00H04W36/14
CPCH04W36/0022H04W36/0033H04W36/14
Inventor 张元梁靖傅婧
Owner DATANG MOBILE COMM EQUIP CO LTD
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