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

專利號(hào)
US11160124B2
公開日期
2021-10-26
申請(qǐng)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(shuō)明書

After the terminal initiates the RRC connection request, the distributed unit receives the RRC connection request, and then the distributed unit sends the RRC connection request to the centralized unit. There may be at least the following several specific transmission manners of the RRC connection request:

(1) transmitting through a control plane connection between the distributed unit and the centralized unit;

(2) transmitting through a dedicated user plane transmission path established for a cell accessed by the terminal; and

(3) transmitting through a dedicated user plane transmission path established for the terminal.

The following separately describes specific implementation processes of the foregoing transmission manners in cases of different first terminal identifier allocation manners.

FIG. 7 is a schematic flowchart of a wireless connection control method embodiment 4 according to this application. In this process, a RRC connection message is transmitted through a control plane connection between a distributed unit and a centralized unit. As shown in FIG. 7, the process includes the following steps.

S700. Establish a control plane interface between the distributed unit and the centralized unit.

S701. A terminal obtains a first terminal identifier.

權(quán)利要求

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