Service bearing method and apparatus, service data receiving method and receiving terminal
A service bearer method and apparatus, a service data receiving method and a receiving terminal are provided. The method includes: a network side converts a Multimedia Broadcast and Multicast Service (MBSFN) sub-frame to a unicast service sub-frame and bears the unicast service on the converted unicast sub-frame. The method improves the utilization ratio of the wireless resources.
1. A service bearing method, for bearing a service in multicast broadcast single frequency network (MBSFN) subframes, comprising:
a network side converting the MBSFN subframe to a unicast subframe, wherein the length of cyclic prefix (CP) used by the converted unicast subframe is same as the length of CP of a non-MBSFN region of the MBSFN subframe, or the length of CP used by the converted unicast subframe is same as the length of CP of a subframe with number 0 of a frame in which the MBSFN subframe is located; and
bearing a unicast service on the converted unicast subframe.
2. The method according to claim 1 , wherein the step of converting the MBSFN subframe to the unicast subframe comprises:
converting a non-MBSFN region of the MBSFN subframe to a control region of the unicast subframe.
3. The method according to claim 2 , wherein the step of converting a non-MBSFN region of the MBSFN subframe to a control region of the unicast subframe comprises:
taking the non-MBSFN region of the MBSFN subframe as the control region of the converted unicast subframe, wherein the number of the orthogonal frequency division multiplexing (OFDM) symbols occupied by the control region of the converted unicast subframe is the same as the number of the OFDM symbols occupied by the non-MBSFN region of the MBSFN subframe.
4. The method according to claim 3 , wherein, after converting the MBSFN subframe to the unicast subframe, the method further comprises:
indicating downlink resource assignment information of the unicast service in the control region of the unicast subframe.
5. The method according to claim 4 , wherein the step of the network side bearing the unicast service on the converted unicast subframe comprises:
transmitting by the network side on the converted unicast subframe a pilot which is used for bearing the unicast service.
6. The method according to claim 1 , wherein, after converting the MBSFN subframe to the unicast subframe, the method further comprises:
indicating downlink resource assignment information of the unicast service in the control region of the unicast subframe.
7. The method according to claim 6 , wherein the step of the network side bearing the unicast service on the converted unicast subframe comprises:
transmitting by the network side on the converted unicast subframe a pilot which is used for bearing the unicast service.
8. The method according to claim 6 , wherein the step of the network side bearing the unicast service on the converted unicast subframe comprises:
transmitting by the network side on the converted unicast subframe a scrambling code sequence which is used for bearing the unicast service.
9. The method according to claim 6 , wherein, after the network side bears a unicast service on the converted unicast subframe, the method further comprises:
a receiving terminal receiving the downlink resource assignment information on the control region of the converted unicast subframe; and
the receiving terminal receiving, according to the downlink resource assignment information, the unicast service on the converted unicast subframe.
10. The method according to claim 2 , wherein, after converting the MBSFN subframe to the unicast subframe, the method further comprises:
indicating downlink resource assignment information of the unicast service in the control region of the unicast subframe.
11. The method according to claim 10 , wherein the step of the network side bearing the unicast service on the converted unicast subframe comprises:
transmitting by the network side on the converted unicast subframe a pilot which is used for bearing the unicast service.
12. The method according to claim 10 , wherein the step of the network side bearing the unicast service on the converted unicast subframe comprises:
transmitting by the network side on the converted unicast subframe a scrambling code sequence which is used for bearing the unicast service.
13. The method according to claim 10 , wherein, after the network side bears a unicast service on the converted unicast subframe, the method further comprises:
a receiving terminal receiving the downlink resource assignment information on the control region of the converted unicast subframe; and
the receiving terminal receiving, according to the downlink resource assignment information, the unicast service on the converted unicast subframe.
14. A service data receiving method, which is used for receiving by a receiving terminal the service data transmitted by a network side, comprising:
the receiving terminal receiving a multicast broadcast single frequency network (MBSFN) subframe;
detecting downlink resource assignment information in a non-MBSFN region of the MBSFN subframe; and
receiving user data in unicast subframe structure on the MBSFN subframe according to the downlink resource assignment information.
15. The method according to claim 14 , wherein, if the downlink resource assignment information is not detected in the non-MBSFN region of the MBSFN subframe, the method further comprises:
the receiving terminal only receiving the contents of the non-MBSFN region.
16. A service bearing apparatus, which is used for bearing a service in a multimedia broadcast and multicast service (MBMS) system, comprising:
a conversion module adapted for converting a multicast broadcast single frequency network (MBSFN) subframe to a unicast subframe, wherein the length of cyclic prefix (CP) used by the converted unicast subframe is same as the length of CP of a non-MBSFN region of the MBSFN subframe, or the length of CP used by the converted unicast subframe is same as the length of CP of a subframe with number 0 of a frame in which the MBSFN subframe is located; and
a scheduling module adapted for bearing a unicast service on the converted unicast subframe.
17. The apparatus according to claim 16 , further comprising:
a transmitting module adapted for transmitting, on the converted unicast subframe, a pilot and/or a scrambling code sequence used for bearing the unicast service.
18. A receiving terminal, for receiving in a multimedia broadcast and multicast service (MBMS) system the service data transmitted by a network side, wherein the receiving terminal comprises:
a first receiving module adapted for receiving an a multicast broadcast single frequency network (MBSFN) subframe from the network side;
a detecting module adapted for detecting downlink resource assignment information in a non-MBSFN region of the received MBSFN subframe; and
a second receiving module adapted for receiving user data in unicast subframe structure on the MBSFN subframe according to the detected downlink resource assignment information.
19. The receiving terminal according to claim 18 , wherein the receiving terminal further comprises:
a third receiving module adapted for receiving, in the case that the downlink resource assignment information is not detected by the detecting module in the non-MBSFN region, the contents of the non-MBSFN region.