Method for accelerating the activation of a mbms service

Abstract

The invention relates to a method for accelerating the activation of a MBMS service distributed by a service provider to a plurality of user equipments UEs in the form of MBMS data packets, MBMS data packet, comprising each, compressed header information and a payload, characterized by:—creating a specific MBMS service data flow containing only header information,—transmitting said specific MBMS service data flow to the UE separately from said MBMS data packets.

1 . A method for accelerating the activation of a MBMS service distributed by a service provider to a plurality of user equipments UEs in the form of MBMS data packets, MBMS data packet, comprising each, compressed header information and a payload, the method comprising:
 creating a specific MBMS service data flow containing only header information,   transmitting said specific MBMS service data flow to the UE separately from said MBMS data packets.   
     
     
         2 . The method according to  claim 1  wherein said specific MBMS service data flow is transmitted to the UEs over a MBMS Traffic Channel (MTCH). 
     
     
         3 . The method according to  claim 1  wherein said specific MBMS service data flow is transmitted to the UEs over a MBMS Control Channel (MCCH). 
     
     
         4 . The method according to  claim 2  wherein said UEs are configured to continuously read said MBMS Traffic Channel (MTCH) in order to maintain exhaustive header information for a set of MBMS services. 
     
     
         5 . The method according to  claim 1  wherein said specific MBMS service data flow is transmitted to the UEs with scheduling information indicating the occurrence data of the next transmissions of a service on MTCH in order to stop reception in-between. 
     
     
         6 . The method according to  claim 1  wherein said specific MBMS service data flow is transmitted to the UEs with reference periods of the MCCH for notifying the change of the information related to a specific MBMS service data flow compared with the previous reference period. 
     
     
         7 . The method according to  claim 6  wherein the notification of the change of the information related to a specific MBMS service data flow is carried out by means of an MBMS indicator channel (MICH) monitored by UEs. 
     
     
         8 . The method according to  claim 6  wherein the notification of the change of the information related to a specific MBMS service data flow is carried out by means of an arrangement of MBMS control information on MCCH where control information is transmitted as the start of each reference period and includes the list of MBMS services for which modified information will be transmitted. 
     
     
         9 . The method according to  claim 1  wherein, said specific MBMS service data flow is identified by means of MCCH control information related to the MBMS service containing the payload. 
     
     
         10 . A User Equipment adapted for receiving MBMS service distributed by a service provider in the form of MBMS data packets comprising compressed header information and a payloads, said User Equipment comprising a reception unit that receives specific MBMS service data flow containing only header information transmitted separately from said MBMS data packets. 
     
     
         11 . The User Equipment according to  claim 10  configured for acquiring and maintaining the header information for several MBMS services while not receiving said MBMS services. 
     
     
         12 . A server adapted for distributing MBMS services to a plurality of user equipments UEs in the form of MBMS data packets comprising compressed header information and a payloads, said server comprising:
 a creation unit that creates a specific MBMS service data flow containing only header information,   a transmission unit that transmits said specific MBMS service data flow to the UEs separately from said MBMS data packets.   
     
     
         13 . The method according to  claim 3  wherein said UEs are configured to continuously read said MBMS Control Channel (MCCH) in order to maintain exhaustive header information for a set of MBMS services.