阅读说明：本技术 系统信息请求的发送方法、装置和系统 (Method, device and system for sending system information request ) 是由 贾美艺 李国荣 于 2019-03-28 设计创作，主要内容包括：本发明提供了一种系统信息请求的发送方法、装置和系统,该方法包括：终端设备根据服务小区是否配置了SUL确定使用基于消息1的系统信息(SI)请求过程或者基于消息3的SI请求过程通过SUL或NUL向网络设备请求按需系统信息。根据本发明实施例,能够避免在终端设备能力不支持的情况下选择错误的SI请求过程。(The invention provides a method, a device and a system for sending a system information request, wherein the method comprises the following steps: the terminal device determines to request the on-demand system information from the network device through the SUL or the NUL using a System Information (SI) request procedure based on the message 1 or an SI request procedure based on the message 3 according to whether the serving cell is configured with the SUL. According to the embodiment of the invention, the wrong SI request process can be avoided being selected under the condition that the capability of the terminal equipment is not supported.)