Radio lan system, diversity apparatus, and radio lan terminal

A wireless LAN system comprising:

• a plurality of base stations;
• at least one LAN terminal configured to be wirelessly connected to the base stations;
• at least one IP terminal configured to be connected to an IP network;
• and
• a diversity device connected to the IP network and configured to relay packet transmission between the LAN terminal and the IP terminal via the IP network;
• wherein
• the LAN terminal includes
• a first uplink packet processor configured to sequentially establish association with a predetermined number of the base stations, and to transmit a plurality of uplink packets, which are identical to each other, to the diversity device parallelly via the base stations with which association has been established, such that each base station relays one of the uplink packets,
• the diversity device includes
• a second uplink packet processor configured to receive the uplink packets, select one of received uplink packets, and transmit selected uplink packet to the IP terminal;
• and
• a first downlink packet processor configured to receive a downlink packet from the IP terminal, create a plurality of downlink packets, which are identical to each other, from received downlink packet, and transmit created downlink packets to the LAN terminal parallelly via the base stations with which the association has been established, and
• the LAN terminal further includes
• a second downlink packet processor configured to receive the downlink packets from the diversity device via the base stations, select and output one of received downlink packets.

A diversity device applied to a wireless LAN system including a plurality of base stations, at least one LAN terminal configured to be wirelessly connected to the base stations, at least one IP terminal configured to be connected to an IP network, and a diversity device connected to the IP network and configured to relay packet transmission between the LAN terminal and the IP terminal via the IP network, wherein the LAN terminal includes a first uplink packet processor configured to sequentially establish association with a predetermined number of the base stations, and to transmit a plurality of uplink packets, which are identical to each other, to the diversity device parallelly via the base stations with which association has been established, and a first downlink packet processor configured to receive a plurality of downlink packets, which are identical to each other, from the diversity device via the base stations, select and output one of received downlink packets, the diversity device comprising:

• a second uplink packet processor configured to receive the uplink packets via the base stations, select one of received uplink packets, and transmit selected uplink packet to the IP terminal;
• and
• a second downlink packet processor configured to receive a downlink packet from the IP terminal, create a plurality of downlink packets, which are identical to each other, from received downlink packet, and transmit created downlink packets to the LAN terminal parallelly via the base stations with which the association has been established.

A diversity device applied to a wireless LAN system including a plurality of base stations, at least one LAN terminal configured to be wirelessly connected to the base stations, at least one IP terminal configured to be connected to an IP network, and a diversity device connected to the IP network and configured to relay packet transmission between the LAN terminal and the IP terminal via the IP network, wherein the LAN terminal includes a first downlink packet processor configured to receive a downlink packet from the IP terminal, create a plurality of downlink packets, which are identical to each other, from received downlink packet, and transmit created downlink packets to the LAN terminal parallelly via the base stations with which the association has been established, and a first uplink packet processor configured to receive a plurality of uplink packets, which are identical to each other, from the LAN terminal via the wireless LAN base stations, select one of received uplink packets, and transmit selected uplink packet to the IP terminal, the diversity device comprising:

• a second uplink packet processor configured to sequentially establish association with a predetermined number of the base stations, and to transmit a plurality of uplink packets, which are identical to each other, to the diversity device parallelly via the base stations with which association has been established;
• and
• a second downlink packet processor configured to receive a plurality of the downlink packets from the diversity device via the base stations, select and output one of received downlink packets.