| 摘要 |
<p>Efficient use of an identification information group (MAC ID) region which is assigned to a mobile station apparatus by a base station apparatus, and reduction in an uplink resource for making a request from the mobile station apparatus to the base station apparatus to start transmission of an MBMS service, are realized. In a mobile communication system which provides a Multimedia Broadcast Multicast Service (MBMS), a mobile station apparatus communicates with a base station apparatus. A control unit 210 is included which performs mapping between an MBMS service ID for identifying the MBMS service provided in this mobile communication system, and an MBMS short transmission ID for identifying the MBMS service transmitted within a cell, and further maps the MBMS short transmission ID to an MBMS group ID (MBMS-RNTI) for identifying a group of mobile stations to which multicast is performed. This MBMS control unit 210 manages a correspondence relationship among the MBMS service ID, the MBMS short transmission ID and the MBMS group ID (MBMS-RNTI), based on information received from the base station apparatus included in an SCPTM cell.</p> |
