Reception apparatus, reception method, transmission apparatus, and transmission method

A reception method for a reception apparatus, comprising the steps of:

• by the reception apparatus,
• receiving a content transmitted in an IP transmission system;
• acquiring, based on first control information that is transmitted in a first layer in a protocol attack of the IP transmission system and includes information indicating whether second control information transmitted in a second layer higher than the first layer exists, the second control information, and
• controlling operations of units that process the content based on the second control information.

A transmission apparatus, comprising:

• an acquisition unit that acquires a content transmitted in an IP transmission system;
• a generation unit that generates first control information that is transmitted in a first layer in a protocol stack of the IP transmission system and includes information indicating whether second control information transmitted in a second layer higher than the first layer exists;
• and
• a transmission unit that transmits the first control information and the second control information together with the content according to the IP transmission system.

A transmission method for a transmission apparatus, comprising the steps of:

• by the transmission apparatus,
• acquiring a content transmitted in an IP transmission system;
• generating first control information that is transmitted in a first layer in a protocol stack of the IP transmission system and includes information indicating whether second control information transmitted in a second layer higher than the first layer exists;
• and
• transmitting the first control information and the second control information together with the content according to the IP transmission system.