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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.

說明書

In the foregoing procedure, if step S508 needs to be performed, that is, the first terminal identifier is not carried in the RRC connection establishment request when the RRC connection establishment request is sent in step S507, steps S507 and S508 may be performed in the other way around. In other words, the distributed unit may first send the first terminal identifier to the centralized unit, and then send the RRC connection establishment request to the centralized unit.

In the foregoing procedure, the messages corresponding to steps S506 and S510 may be sent through a same physical layer message, so as to save air interface transmission resources.

In this embodiment, the first terminal identifier allocated by the distributed unit for the terminal is selected from the terminal identifier set sent in advance by the centralized unit. In other words, the centralized unit performs division of a first terminal identifier for all the plurality of distributed units connected to the centralized unit. Therefore, flexibility of network configuration is improved.

FIG. 6 is a schematic flowchart of a connection control method embodiment 3 according to this application. In this process, a centralized unit allocates a first terminal identifier for a terminal. As shown in FIG. 6, the process includes the following steps.

S601. The terminal sends a random access request to a distributed unit.

S602. The distributed unit sends a second request message to the centralized unit, where the second request message is used to request the centralized unit to allocate the first terminal identifier for the terminal.

權(quán)利要求

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