用于发送应用内容信号传递信息的方法可以包括：产生用于要由接收器设备获取的应用的应用内容项的中继数据片段；向该中继数据片段增加第一属性集，其中该第一属性集指示由在该应用中嵌入的媒体播放机运行一个线性服务或者一组线性服务的渲染；及向接收器设备发送该中继数据片段。该第一属性集可以包括用于该应用的应用启动页面或者启动文档指示符、及/或用于渲染该应用和相关联的应用内容项所需要的能力的指示。该第一属性集可以包括用于该应用的至少一个分发讯窗的起始时间和结束时间，该至少一个分发讯窗可以与关于在该至少一个分发讯窗期间发送的辅助应用内容的信息相关联。

Methods for delivering application content signaling information may include a generating a metadata fragment for application content items of an application to be acquired by a receiver device, adding to the metadata fragment a first set of attributes indicating that rendering of a linear service or a group of linear services is performed by a media player embedded in the application, and transmitting the metadata fragment to the receiver device. The first set of attributes may include an application launch page or launch file indicator for the application, and/or an indication of required capabilities for rendering the application and associated application content items. The first set of attributes may include a start time and an end time for at least one distribution window for the application, and the at least one distribution window may be associated with information about auxiliary application content delivered during the at least one distribution window.