US 7,321,569 B2
Radio communication system using point-to-point and point-to-multipoint user information communications
Masahiro Takagi, Tokyo (Japan); Keiji Tsunoda, Kanagawa (Japan); Takafumi Sakamoto, Kanagawa (Japan); and Eiji Kamagata, Kanagawa (Japan)
Assigned to Kabushiki Kaisha Toshiba, Kawasaki-shi (Japan)
Filed on Sep. 12, 2005, as Appl. No. 11/223,046.
Application 11/223046 is a division of application No. 09/639072, filed on Aug. 16, 2000, granted, now 6,965,580.
Claims priority of application No. 11-229853 (JP), filed on Aug. 16, 1999.
Prior Publication US 2006/0056341 A1, Mar. 16, 2006
This patent is subject to a terminal disclaimer.
Int. Cl. H04Q 7/00 (2006.01); H04B 7/212 (2006.01); G06F 11/00 (2006.01)
U.S. Cl. 370—312  [370/328; 370/348; 370/432] 12 Claims
OG exemplary drawing
 
1. A radio base station device, comprising:
a reception unit configured to receive a connection request from one radio terminal;
a set up unit configured to set up a datalink connection with respect to said one radio terminal;
a first allocation unit configured to allocate a first media access control identifier which is an unused media access control identifier, to said one radio terminal that issued the connection request;
a broadcast unit configured to broadcast a correspondence between the first media access control identifier and said one radio terminal;
a second allocation unit configured to allocate both a second media access control identifier and a datalink connection identifier to an identifier of a multicast information that are to be received by a plurality of radio terminals, the datalink connection identifier being used to transmit uplink information related to the multicast information;
a first transmission unit configured to transmit a correspondence information for enabling said plurality of radio terminals to recognize a correspondence between the second media access control identifier and the identifier of the multicast information; and
a second transmission unit configured to transmit a time-slot corresponding to the first media access control identifier with a user information destined to said one radio terminal loaded thereon, and a time-slot corresponding to the second media access control identifier with the multicast information loaded thereon.