Multimedia broadcast/multicast service cells reconfigurations

A method of transmitting a validity of physical channels carrying point-to-multipoint service data in a wireless communication system, the method comprising:

• generating a message comprising validity information for deriving a validity timing of configuration information of the physical channels of at least one cell;
• and
• transmitting the message to a mobile terminal through the at least one cell,
• wherein the validity information is based on least significant bits of a system frame number (SFN),
• wherein the physical channels are Secondary Common Control Physical Channels (SCCPCH),
• wherein the validity information is a point-to-multipoint activation time for a point-to-multipoint service, and
• wherein the validity information defines a starting time at which the configuration information becomes valid.

A method for adapting a configuration of physical channels by a mobile terminal in a wireless communication system, the method comprising:

• receiving a message comprising validity information for deriving a validity timing of configuration information of the physical channels of at least one cell;
• and
• starting to use the configuration of the physical channels based on the validity information,
• wherein the validity information is based on least significant bits of a system frame number (SFN),
• wherein the physical channels are Secondary Common Control Physical Channels (SCCPCH), and
• wherein the validity information is a point-to-multipoint activation time for a point-to-multipoint service.

A mobile terminal that receives point-to-multipoint service data in a wireless communication system, the mobile terminal comprising:

• a reception module configured to receive a message comprising validity information for deriving a validity timing of configuration information of physical channels of at least one cell;
• and
• a processing module configured to start using the configuration of the physical channels based on the validity information,
• wherein the validity information is based on least significant bits of a system frame number (SFN),
• wherein the physical channels are Secondary Common Control Physical Channels (SCCPCH), and
• wherein the validity information is a point-to-multipoint activation time for a point-to-multipoint service.

A network that provides point-to-multipoint service data in a wireless communication system, the network comprising:

• a processing module configured to generate a message comprising validity information for deriving a validity timing of configuration information of physical channels of at least one cell;
• and
• a transmission module configured to transmit the message to a mobile terminal through the at least one cell,
• wherein the validity information is based on least significant bits of a system frame number (SFN),
• wherein the physical channels are Secondary Common Control Physical Channels (SCCPCH),
• wherein the validity information is a point-to-multipoint activation time for a point-to-multipoint service, and
• wherein the validity information defines a starting time at which the configuration information becomes valid.