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Wireless connection control method, distributed unit, centralized unit, and base station system

專利號
US11160124B2
公開日期
2021-10-26
申請人
HUAWEI TECHNOLOGIES CO., LTD.（CN Shenzhen）
發(fā)明人
Rui Wang; Mingzeng Dai; Xudong Yang; Hongzhuo Zhang
IPC分類
H04W4/00; H04W76/11; H04W76/27; H04W72/00; H04W74/08
技術(shù)領(lǐng)域
bearer,unit,terminal,message,identifier,signaling,plane,rrc,in,connection
地域： Guangdong

摘要

This application provides a wireless connection control method relating to a base station system including a centralized unit and a distributed unit, wherein the centralized unit communicates with the distributed unit, and the distributed unit communicates with a terminal through an air interface. The method includes: first receiving, by the distributed unit, a first message sent by the terminal, where the first message is used to request to establish an air interface control plane connection for the terminal; then sending, by the distributed unit, the first message to the centralized unit; and then receiving, by the distributed unit, a second message sent by the centralized unit, where the second message is used to instruct to establish the air interface control plane connection between the terminal and the distributed unit. The method may implement wireless connection control in a 5G system when functions of a base station are separated.

說明書

In the foregoing embodiment, a user plane transmission path may be specifically a user plane tunnel. Correspondingly, the user plane transmission path establishment information may be specifically user plane tunnel establishment information. The user plane tunnel establishment information includes one or a combination of the following information: a tunnel identifier, a tunnel port number, a tunnel IP address, and a tunnel MAC address. For example, the user plane tunnel is established based on the GTP-U protocol. To establish the user plane tunnel between the distributed unit and the centralized unit, the centralized unit needs to notify the distributed unit of a tunnel identifier allocated for the tunnel on the centralized unit side. After obtaining an IP address (this address may be used for all user plane tunnels between the centralized unit and the distributed unit) of the centralized unit and the tunnel identifier allocated by the centralized unit for the tunnel, the distributed unit may send a corresponding user plane message to the centralized unit through the tunnel. Likewise, when sending the user plane message to the distributed unit through the user plane tunnel, the centralized unit needs to obtain in advance an address of the distributed unit and a tunnel identifier allocated by the distributed unit for the tunnel,

FIG. 8 is a schematic flowchart of a wireless connection control method embodiment 5 according to this application. In this process, a RRC connection message is transmitted through a dedicated user plane transmission path for a cell accessed by the terminal. As shown in FIG. 8, the process includes the following steps.

S800. Establish a control plane interface between a distributed unit and a centralized unit.

權(quán)利要求

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