Method and access device for implementing IP broadband video service

An access device located between a user terminal and a multicast router, comprising:

• a processor configured to:
• receive a request for a program from the user terminal;
• check, upon receiving the request for the program from the user terminal, whether at least one right of a user corresponding to the user terminal includes a right to demand the program;
• perform, if the at least one right of the user corresponding to the user terminal includes the right to demand the program and the user is the first member joining a multicast group that corresponds to the program:
• recording, at a memory, a time for the user terminal joining the multicast group,
• sending the request for the program to the multicast router,
• receiving a multicast stream of the program from the multicast router,
• sending the multicast stream of the program received from the multicast router to the user terminal,
• recording a time for the user terminal leaving the multicast group, and
• sending a record including the time for the user terminal joining the multicast group and the time for the user terminal leaving the multicast group to a video service support system;
• and
• perform, if the at least one right of the user corresponding to the user terminal includes the right to demand the program and the user is not the first member joining the multicast group that corresponds to the program:
• recording, at a memory, a time for the user terminal joining the multicast group while sending the multicast stream of the program to the user terminal;
• recording, at a memory, a time for the user terminal leaving the multicast group;
• and
• sending a record including the time for the user terminal joining the multicast group and the time for the user terminal leaving the multicast group to a video service support system.