Radio communication base station apparatus and radio communication method
View Patent ↗Provided are a wireless communication base station device and a wireless communication method by which overhead is reduced in MBMS of LTE. An MBMS SIB creating section ( 106 ) creates an MCCH as an MBMS SIB of notification information, and an MBMS SB creating section ( 104 ) creates an MBMS SB, including scheduling information of the MBMS SIB. An MIB creating section ( 103 ) creates an MIB, including scheduling information of the MBMS SB, and a transmitting section ( 107 ) transmits the created MBMS SIB, MBMS SB AND MIB to a terminal by following the scheduling made by a scheduling section ( 101 ).
1. A radio communication base station apparatus, the base station apparatus being used in a system providing a multimedia broadcast multicast service (MBMS) with a different plurality of Single Frequency Network (SFN) operation formats per area, the base station apparatus comprising:
an MBMS control information creator that creates MBMS control information per plurality of SFN operation formats as control information for the MBMS with the different plurality of SFN operation formats;
a transmitter that transmits the created MBMS control information;
a notification section that transmits (i) notification information to notify instructions to obtain the MBMS control information via a common Layer 1/Layer 2 (L1/L2) control channel in the plurality of SFN operation formats, and (ii) information on scheduling to obtain the MBMS control information; and
an adjustor that adjusts a transmission timing of sending the notification information so that instructions to obtain the MBMS control information and the information on scheduling of the MBMS control information are in a same transmission unit.
2. The radio communication base station apparatus according to claim 1 , wherein the notification information to obtain the MBMS control information includes a Scheduling Block (MBMS SB) for a common MBMS in the plurality of SFN operation formats and includes scheduling information of the MBMS control information.
3. The radio communication base station apparatus according to claim 1 , wherein the plurality of SFN operation formats include an operation format where SFN is used and an operation format where SFN is not used (Non-SFN).
4. The radio communication base station apparatus according to claim 1 , wherein the notification information includes instructions to obtain the MBMS control information through an MBMS Indication Channel (MICH).
5. The radio communication base station apparatus according to claim 1 , wherein the MBMS control information comprises an MBMS System Information Block (SIB).
6. The radio communication base station apparatus according to claim 1 , wherein the MBMS control information comprises an MBMS point-to-multipoint Control Channel (MCCH).
7. A radio communication method in a system providing a multimedia broadcast multicast service (MBMS) with a different plurality of Single Frequency Network (SFN) operation formats per area, the method being performed by a base station apparatus that performs operations of:
creating MBMS control information per plurality of SFN operation formats as control information for the MBMS with the different plurality of SFN operation formats;
transmitting, by a transmitter, the created MBMS control information;
transmitting (i) notification information to notify instructions to obtain the MBMS control information via a common Layer 1/Layer 2 (L1/L2) control channel in the plurality of SFN operation formats, and (ii) information on scheduling to obtain the MBMS control information; and
adjusting a transmission timing of sending the notification information so that instructions to obtain the MBMS control information and the information on scheduling of the MBMS control information are in a same transmission unit.
8. The method according to claim 7 , wherein the notification information to obtain the MBMS control information includes a Scheduling Block (MBMS SB) for a common MBMS in the plurality of SFN operation formats and includes scheduling information of the MBMS control information.
9. The method according to claim 7 , wherein the plurality of SEN operation formats include an operation format where SFN is used and an operation format where SFN is not used (Non-SFN).
10. The method according to claim 7 , wherein the notification information includes instructions to obtain the MBMS control information through an MBMS Indication Channel (MICH).
11. The method according to claim 7 , wherein the MBMS control information comprises an MBMS System Information Block (SIB).
12. The method according to claim 7 , wherein the MBMS control information comprises an MBMS point-to-multipoint Control Channel (MCCH).