Method and system for registering domain

A method of registering domains, comprising the steps of:

• notifying an allowable response time from a first domain managing entity to a second domain managing entity, the first domain managing entity managing a first domain, the second domain managing entity managing a second domain lower in rank than the first domain, the second domain having a domain member entity as a registered member thereof, the second domain managing entity having information indicative of a first response time for signal transfer between the second domain managing entity and the domain member entity;
• measuring a second response time for signal transfer between the first domain managing entity and the second domain managing entity;
• comparing a sum of the first response time and the second response time with the allowable response time notified from the first domain managing entity to the second domain managing entity to decide whether or not the sum is greater than the allowable response time;
• and
• forbidding registering the second domain with the first domain when it is decided that the sum is greater than the allowable response time.

A method of registering domains, comprising the steps of:

• notifying an allowable response time from a first domain managing entity to a second domain managing entity, the first domain managing entity managing a first domain, the second domain managing entity managing a second domain lower in rank than the first domain, the second domain managing entity having information indicative of a first response time for signal transfer between the first domain managing entity and the second domain managing entity;
• measuring a second response time for signal transfer between a domain member entity and the second domain managing entity;
• comparing a sum of the first response time and the second response time with the allowable response time notified from the first domain managing entity to the second domain managing entity to decide whether or not the sum is greater than the allowable response time;
• and
• forbidding registering the domain member entity with the second domain when it is decided that the sum is greater than the allowable response time.

A method of registering domains, wherein a first domain managing entity manages a first domain through the use of a first domain ID information piece for the first domain, and a second domain managing entity manages a second domain through a second domain ID information piece for the second domain, and wherein a domain member entity assigned an entity ID information piece is registered with the second domain, and the second domain is registered with the first domain as one lower in rank than the first domain, the method comprising the steps of:

• sending a request for a domain ID information piece from the domain member entity to the first domain managing entity in cases where the second domain managing entity does not notify the domain member entity that the second domain is registered with the first domain and one of a content or a service given a prescribed domain ID information piece is requested to be used by the domain member entity, the request containing the entity ID information piece for the domain member entity;
• deciding whether or not the domain member entity is registered with the first domain on the basis of the entity ID information piece in the request sent from the domain member entity to the first domain managing entity;
• sending the first domain ID information piece for the first domain from the first domain managing entity to the domain member entity when it is decided that the domain member entity is registered with the first domain;
• comparing the first domain ID information piece sent from the first domain managing entity to the domain member entity with the prescribed domain ID information piece to decide whether or not the first domain ID information piece and the prescribed domain ID information piece are the same;
• permitting the domain member entity to use said one of the content and the service when it is decided that the first domain ID information piece and the prescribed domain ID information piece are the same;
• and
• forbidding the domain member entity to use said one of the content and the service when it is decided that the first domain ID information piece and the prescribed domain ID information piece are not the same.

A system for registering domains, comprising:

• a first domain assigned a first ID;
• a first list for IDs of members registered with the first domain as ones lower in rank than the first domain;
• a second list for IDs of domains registered with the first domain as ones higher in rank than the first domain;
• a second domain assigned a second ID;
• a third list for IDs of members registered with the second domain as ones lower in rank than the second domain;
• a fourth list for IDs of domains registered with the second domain as ones higher in rank than the second domain;
• means for recording the first ID into the fourth list to register the first domain with the second domain as one higher in rank than the second domain;
• and
• means for recording the second ID into the first list to register the second domain with the first domain as one lower in rank than the first domain.