Method, base station, and broadcast multicast service center for creating, updating, and releasing synchronization entities
View Patent ↗The present invention provides processes of creating, updating, and releasing SYNC entities between eNB and BM-SC, and an eNB and a BM-SC for implementing the processes of creating, updating, and releasing the SYNC entities. According to a solution of the present invention, a method of creating SYNC entities is provided, including: creating, at a BM-SC, a plurality of SYNC entities whose amount is equal to the total amount of services, and associating the created plurality of SYNC entities with the services in a one-to-one correspondence manner; sending a SYNC entity creating instruction to all eNBs within an MBSFN area; creating, at each eNB, a plurality of SYNC entities whose amount is equal to the total amount of services based on the received SYNC entity creating instruction, and associating the created plurality of SYNC entities with the services in a one-to-one correspondence manner.
1. A method of creating synchronization entities, comprising:
creating, at a Broadcast Multicast Service Center (BM-SC), a plurality of synchronization entities whose amount is equal to the total amount of services, and associating the created plurality of synchronization entities with the services in a one-to-one correspondence manner;
sending a synchronization entity creating instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area; and
creating, at each base station, a plurality of synchronization entities whose amount is equal to the total amount of services based on the received synchronization entity creating instruction, and associating the created plurality of synchronization entities with the services in a one-to-one correspondence manner.
2. The method of creating synchronization entities according to claim 1 , wherein
the synchronization entity creating instruction comprises total amount of services, service identification information, and service start indication.
3. A method of updating synchronization entities, comprising:
creating at a Broadcast Multicast Service Center (BM-SC) a new synchronization entity when a new service starts and associating the created new synchronization entity with the new service in a one-to-one correspondence manner;
sending a synchronization entity updating instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area;
creating, at each base station, a new synchronization entity based on the received synchronization entity updating instruction, and associating the created new synchronization entity with the new service in a one-to-one correspondence manner.
4. The method of updating synchronization entities according to claim 3 , wherein
the synchronization entity updating instruction comprises service identification information and service start indication.
5. A method of releasing synchronization entities, comprising:
releasing, at a Broadcast Multicast Service Center (BM-SC), when an original service terminates, a synchronization entity that is associated with the original service;
sending a synchronization entity releasing instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area;
releasing, at each base station, a synchronization entity associated with the original service based on the received synchronization entity releasing instruction.
6. The method of releasing synchronization entities according to claim 5 , wherein
the synchronization entity releasing instruction comprises service identification information and service termination indication.
7. A method of creating SYNC entities, comprising:
creating, at a Broadcast Multicast Service Center (BM-SC), a plurality of SYNC entities whose amount is equal to a total amount of service groups, and associating the created plurality of synchronization entities with the service groups in a one-to-one correspondence manner;
sending a synchronization entity creating instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area;
creating, at each base station, a plurality of synchronization entities whose amount is equal to the total amount of service groups based on the received synchronization entity creating instruction, and associating the created plurality of synchronization entities with the service groups in a one-to-one correspondence manner.
8. A method of updating synchronization entities, comprising:
first determining, at a Broadcast Multicast Service Center (BM-SC), when a new service starts, whether the new service belongs to any existing group;
creating, at the BM-SC, a new synchronization entity when the new service does not belong to any existing service group, and associating the created new synchronization entity with the new service in a one-to-one correspondence manner;
sending a synchronization entity updating instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area;
first determining, at each base station, whether the new service belongs to any existing service group based on the received SYNC entity updating instruction;
creating, at each base station, a new synchronization entity when the new service does not belong to any existing service group, and associating the created new synchronization entity with the new service in a one-to-one correspondence manner.
9. The method of updating synchronization entities according to claim 8 , further comprising:
directly sending, at the BM-SC, when the new service belongs to any existing service group, a synchronization entity updating instruction, created at the BM-SC, to all base stations within the MBSFN area; and
directly terminating, at each base station, the synchronization entity updating process when the new service belongs to any existing service group.
10. A method of releasing synchronization entities, comprising:
determining, at a Broadcast Multicast Service Center (BM-SC), when an original service terminates, whether the original service is the last service in the any service group to which it belongs;
releasing, when the original service is the last service in the service group to which it belongs, a synchronization entity that is associated with the service group to which the original service belongs;
sending a synchronization entity releasing instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area;
determining, at each base station, whether the original service is the last service in the service group to which it belongs based on the received SYNC entity releasing instruction; and
releasing, when the original service is the last service in the service group to which it belongs, a synchronization entity created at a given base station that is associated with the service group to which the original service belongs.
11. A method of creating SYNC entities, comprising:
creating or statically configuring a single synchronization entity at a Broadcast Multicast Service Center (BM-SC);
sending a synchronization entity creating instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area;
creating, at each base station, a single synchronization entity based on the received synchronization entity creating instruction.
12. A Broadcast Multicast Service Center (BM-SC), comprising:
a synchronization entity creating unit configured to create synchronization entities;
a synchronization entity associating unit configured to associate the synchronization entities created by the synchronization entity creating unit with services or service groups; and
instructing unit configured to transmit a synchronization entity creating instruction or a synchronization entity updating instruction to all base stations within a Multimedia Broadcast Multicast Single Frequency Network (MBSFN) area.
13. The BM-SC according to claim 12 , further comprising:
a service initiating/terminating unit configured to determine whether a new service starts or whether an original service terminates; and
a synchronization entity releasing unit configured to release synchronization entities based on services or service groups,
wherein when it is determined that a new service starts, the service initiating/terminating unit instructs the synchronization entity creating unit to create synchronization entities, and
when it is determined that an original service terminates, the service initiating/terminating unit instructs the synchronization entity releasing unit to release a synchronization entity, created at the BM-SC, and the instructing unit is further configured to transmit a synchronization entity releasing instruction to all base stations within the MBSFN area.
14. A base station, comprising:
a receiving unit configured to receive a synchronization entity creating instruction or a synchronization entity updating instruction from a Broadcast Multicast Service Center (BM-SC);
a synchronization entity creating unit configured to create synchronization entities;
a synchronization entity associating unit configured to associate the synchronization entities created by the synchronization entity creating unit with services or service groups.
15. The base station according to claim 14 , wherein:
the receiving unit is further configured to receive the synchronization entity releasing instruction from the BM-SC, and
the base station further comprises a synchronization entity releasing unit configured to release synchronization entities based on the services or the service groups.