Title:
【発明の名称】高速無線アクセス装置
Document Type and Number:
Japanese Patent JP3077635
Kind Code:
B2
Abstract:
A high-speed wireless access device including wireless modems of a base station and a mobile terminal is disclosed. The wireless modem of the base station has a component to add a low-speed packet to the beginning of a high-speed packet, a component to add information to the low-speed packet, and a component to transmit a packet to a mobile terminal by switching to high-speed mode immediately after addition of the low-speed packet. The wireless modem of the mobile terminal has a component for switching from a low-speed demodulation to a high-speed modulation/demodulation with an equalizer built-in, a component for analyzing data received by the low-speed demodulation, a component for turning off the low-speed demodulation and for turning on the high-speed modulation/demodulation when recognizing a packet to the mobile terminal, a component for turning off the high-speed modulation/demodulation after receiving the packet at the mobile terminal, a component for holding an AGC information in a low-speed receiving mode and for making use of this information in a high-speed receiving mode, and a component for holding a timing extraction information in the low-speed receiving mode and for making use of this information in the high-speed receiving mode.
Inventors:
Masahiro Ohshiro
Application Number:
JP16414697A
Publication Date:
August 14, 2000
Filing Date:
June 20, 1997
Export Citation:
Assignee:
NEC
International Classes:
H04B7/26; H04L12/28; H04W4/00; H04W52/02; H04W76/04; (IPC1-7): H04B7/26
Domestic Patent References:
| JP738487A | ||||
| JP9252320A | ||||
| JP9130313A | ||||
| JP10164157A |
Attorney, Agent or Firm:
Hiroo Suzuki