Method and apparatus for generating and subscribing to notifications

An apparatus for generating a notification, comprising:

• a creating unit, configured to create a first subscription resource according to a subscription request, the first subscription resource including a plurality of first event notification criteria and a second event notification criterion, wherein the subscription request includes a resource offset, which indicates a hierarchy of one or more target resources, and different values of the resource offset indicate subscription to different combinations of the one or more target resources;
• a receiving unit, configured to receive the subscription request and multiple first events generated in accordance with the plurality of first event notification criteria;
• a determining unit, configured to determine whether the multiple first events satisfy the second event notification criterion;
• and
• a generating unit, configured to generate a notification in a case where the multiple first events satisfy the second event notification criterion, wherein the notification indicates a second event,
• wherein the second event notification criterion indicates a relationship among the multiple first events,
• wherein, the multiple first events include events related to values of corresponding multiple sensed parameters;
• and wherein, the relationship among the multiple first events indicates a relationship between a predetermined threshold and a result obtained by performing an arithmetic operation on the values of the multiple sensed parameters, and when the result satisfies a condition related to the predetermined threshold, it is determined that the multiple first events satisfy the second event notification criterion.

A method for subscribing to a notification, comprising;

• transmitting a subscription request, wherein the subscription request includes a resource offset, which indicates a hierarchy of one or more target resources, and different values of the resource offset indicate subscription to different combinations of the one or more target resources;
• and
• receiving a notification in a case where multiple first events satisfy a second event notification criterion, wherein the notification indicates a second event,
• wherein the multiple first events are generated in accordance with a plurality of first event notification criteria,
• wherein the second event notification criterion indicates a relationship among the multiple first events,
• wherein, the multiple first events include events related to values of corresponding multiple sensed parameters;
• and wherein, the relationship among the multiple first events indicates a relationship between a predetermined threshold and a result obtained by performing an arithmetic operation on the values of the multiple sensed parameters, and when the result satisfies a condition related to the predetermined threshold, it is determined that the multiple first events satisfy the second event notification criterion.