[54] MOBILE WIRELESS DATA
COMMUNICATIONS SYSTEM
[75] Inventors: Tsutomu Taguchi; Shinji Kobayashi;
Yoshiki Fujima; Kazushige Tanaka, all ol Yokohama; Masahiko Hirono,
Kanagawa, all ol Japan
[73] Assignee: NTT Mobile Communications Network, Inc., Japan
[21] Appl. No.: 08/875,510
[22] PCT Filed: Dec. 20, 1996
[86] PCT No.: PCT/JP96/03724
§ 371 Date: Jul. 29, 1997
§ 102(e) Date: Jul. 29, 1997 [87] PCT Pub. No.: W097/23977
PCT Pub. Date: Jul. 3, 1997
[30] Foreign Application Priority Data
Dec. 26, 1995 [JP] Japan 7-339664
[51] Int. CI.6 H04Q 7/24; H04L 12/28;
H01S 4/00
[52] U.S. CI 370/338; 370/401; 455/445
[58] Field of Search 370/338, 328,
370/349, 401, 329, 352, 356; 455/445, 560, 462, 465
In order lor the user to perform a transmission ol packet data to a desired communication counterpart on a virtual network across a wireless circuit exchange type network system and a LAN without being bothered by address exchange between an address ol a physical network and an address ol a virtual network, an exchange (10a) performs an address exchange necessary lor establishing a communication channel between the terminal equipments within the system using a conversion table, in a mobile wireless data communication system in which a wireless circuit type network system comprising a wireless mobile station (30a), a wireless connection equipment (20a) and the exchange (10a) is connected to a LAN (40a) through a TA (60a) and a router (50a).
6 Claims, 16 Drawing Sheets
