Wireless base station, wireless base station selection method, multicast signal transmission method, and wireless terminal
First Claim
1. A wireless base station which is connected to a plurality of wireless terminals and provides a multicasting service for the plurality of wireless terminals, characterized in that the wireless base station determines autonomously whether the wireless base station provides the multicasting service for the plurality of wireless terminals.
0 Assignments
0 Petitions
Accused Products
Abstract
One preferred embodiment of the invention provides a wireless base station which provides a multicasting service to simultaneously transmit identical data to a plurality of wireless terminals. A wireless base station is connected to a plurality of wireless terminals and provides a multicasting service for a plurality of wireless terminals. The wireless base station determines autonomously whether it provides the multicasting service for the plurality of wireless terminals. Another preferred embodiment of the invention provides a method of selecting a wireless base station for a wireless terminal, the wireless base station providing a multicasting service for the wireless terminal. When the wireless terminal can receive the same multicasting information from a plurality of wireless base stations, the wireless terminal selects one of the plurality of wireless base stations so as to make the number of the wireless base stations that send the same multicasting information as small as possible.
-
Citations
20 Claims
- 1. A wireless base station which is connected to a plurality of wireless terminals and provides a multicasting service for the plurality of wireless terminals, characterized in that the wireless base station determines autonomously whether the wireless base station provides the multicasting service for the plurality of wireless terminals.
-
10. A wireless base station which is connected to a control station and a plurality of wireless terminals and provides a multicasting service for the plurality of wireless terminals, characterized in comprising:
-
a transmitting means for transmitting a first state signal to the control station, the first state signal indicating a multicasting service state of the wireless base station; and
a receiving means for receiving a second state signal from the control station, the second state signal indicating a multicasting service state of a neighboring wireless base station.
-
-
11. A wireless base station which is connected to a control station and a plurality of wireless terminals and provides a multicasting service for the plurality of wireless terminals, characterized in that the wireless base station determines whether the wireless base station provides the multicasting service, based on instructions received from the control station.
- 12. A method of selecting a wireless base station for a wireless terminal, the wireless base station providing a multicasting service for the wireless terminal, characterized in that, when the wireless terminal can receive same multicasting information from a plurality of wireless base stations, the wireless terminal selects one of the plurality of wireless base stations so as to make the number of the wireless base stations that send the same multicasting information as small as possible.
-
16. A wireless base station which provides a multicasting service for a wireless terminal, characterized in that, when the wireless terminal selects one of a plurality of wireless base stations so as to make the number of the wireless base stations that send identical multicasting information as small as possible, the wireless base station determines that the wireless base station provides a multicasting service for the wireless terminal.
- 17. A wireless base station which provides a multicasting service for a wireless terminal, characterized in comprising a counter in which a count value is incremented when a join message from the wireless terminal is received at the wireless base station, and decremented when a leave message from the wireless terminal is received at the wireless base station, wherein the wireless base station transmits the count value of the counter to the wireless terminal.
-
20. A wireless terminal which receives a multicasting service provided by a wireless base station, characterized in comprising:
-
an analysis unit determining the number of wireless terminals connected to a multicast group, based on a received control data; and
a comparison unit determining whether the determined number is larger than the number of wireless terminals currently connected to the base station, wherein the wireless terminal selects one of connection of the wireless terminal to the base station and disconnection of the wireless terminal from the base station based on the result of the determination of the comparison unit, so as to make the number of wireless base stations that send identical multicasting information as small as possible.
-
Specification