| US 7,508,809 B2 | ||
| Base station and radio terminal | ||
| Yukimasa Nagai, Tokyo (Japan); and Hiroyoshi Suga, Tokyo (Japan) | ||
| Assigned to Mitsubishi Electric Corporation, Tokyo (Japan) | ||
| Appl. No. 10/551,701 PCT Filed May 14, 2004, PCT No. PCT/JP2004/006871 § 371(c)(1), (2), (4) Date Sep. 30, 2005, PCT Pub. No. WO2004/102889, PCT Pub. Date Nov. 25, 2004. |
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| Claims priority of application No. 2003-139438 (JP), filed on May 16, 2003. | ||
| Prior Publication US 2006/0189352 A1, Aug. 24, 2006 | ||
| Int. Cl. H04J 3/00 (2006.01); H04B 7/212 (2006.01) | ||
| U.S. Cl. 370—345 [370/347] | 46 Claims |
| 1. A base station for a wireless network system realizing band-widening using a plurality of communication channels, the base
station comprising:
a plurality of physical layers corresponding to the plurality of communication channels, and each that transmits and receives
a radio signal conforming to a predetermined standard using a corresponding communication channel; and
a media access control (hereinafter, “MAC”) layer, wherein the MAC layer includes,
a transmitter control that divides an entire data frame conforming to the predetermined standard from a head of the data frame,
in accordance with a transmission rate of each physical layer, and allots the divided data frame to the physical layers so
that burst times of the communications channels are substantially equal,
a protocol control that dynamically controls the number of random access slots according to a slot use rate, and
a receiver control that combines data frames received via a plurality of communication channels through operations opposite
to those performed when transmitting.
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