Patent ID: 8547892

Claim:
A method in a radio network node for transmission of multimedia broadcast and multicast service (MBMS) control information, in connection with a MBMS service, in a radio access network comprising a radio base station serving a cell wherein variable transmission bandwidth is employed and the cell has a defined maximum transmission bandwidth, said defined maximum transmission bandwidth comprising a full bandwidth, and a defined minimum bandwidth portion of the full bandwidth, the method comprising: a) dynamically activating transmission of MBMS control information based on an amount and portion of a cell bandwidth that is used for a MBMS transmission; b) modifying content of the MBMS control information based on the amount and the portion of the cell bandwidth that is used for the MBMS transmission; and the method further comprising: determining the bandwidth requirement for the MBMS transmission; positioning the MBMS transmission in an available bandwidth; determining if more or less than one minimum bandwidth portion is used for the MBMS service; and if one minimum bandwidth portion or less is used for the MBMS service, the MBMS control information is sent in, and only in, the minimum bandwidth portion used for the MBMS service, and if more than one minimum bandwidth portion is used for the MBMS service, the MBMS control information is sent in more bandwidth portions than the minimum bandwidth portion carrying a major part of the MBMS service.