Portable telephone system

• US 5,838,770 A
• Filed: 08/08/1996
• Issued: 11/17/1998
• Est. Priority Date: 10/07/1991
• Status: Expired due to Fees

• Current Assignee: Hitachi Kokusai Electric Incorporated (Hitachi, Ltd.)
• Original Assignee: Hitachi, Ltd., Kokusai Electric Co., Ltd.
• Inventors: Kondo, Yoshihiro, Ohta, Kouichi, Fukushima, Yutaka, Udaki, Hirofumi, Hashida, Mitsuyoshi, Wanami, Masao, Shimbo, Isao, Yamamoto, Yoshinobu, Wada, Mitsuhiro, Kuwahara, Hiroshi, Nakagoshi, Arata, Watanabe, Yumiko, Iwaki, Shinichi, Takemura, Tetsuo
• Primary Examiner(s): Shankar, Vijay
• Application Number:
  US08/689,359
• Time in Patent Office: 831 Days
• Field of Search: 379/34, 379/58-60, 379/89, 379/211, 379/212, 379/215, 379/167, 379/168, 379/170, 379/171, 379/172, 455/450, 455/445, 455/453, 455/464
• US Class Current: 379/32.03
• CPC Class Codes: H04B 10/25754 Star network topology
• CPC Class Codes: H04W 24/04 Arrangements for maintaining operational condition
• CPC Class Codes: H04W 24/06 Testing, supervising or monitoring using simulated traffic
• CPC Class Codes: H04W 4/16 Communication-related supplementary services, e.g. call-transfer or call-hold
• CPC Class Codes: H04W 60/04 using triggered events
• CPC Class Codes: H04W 64/006 with additional information processing, e.g. for direction or speed determination
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Duplicate optical fibers connect between a base station controller and a radio base station for each route. The duplicate optical fiber is connected to each of the radio base stations for each route through a star coupler. The radio base stations are arranged in each of areas so that the radio base stations for different routes are arranged adjacent to each other.

Claims

1. A portable telephone system, comprising:

a switching system;

a plurality of radio base stations, each of said radio base stations respectively connected to said switching system through transmission paths in a respective area; and

a portable telephone connected to said a respective one of said radio base stations through radio transmission paths, wherein said respective one of said radio base stations holds calls in the order of reception thereof, when the calls are received when said portable telephone is currently in use.

2. A portable telephone system, comprising:

a switching system;

a plurality of radio base stations, each of said radio base stations respectively connected to said switching system through transmission paths in a respective area; and

a portable telephone connected to said a respective one of said radio base stations through radio transmission paths,

wherein, when a plurality of calls for establishing communication between said portable telephone and another terminal are received at said respective one of said radio base stations in a busy state, said respective one of said radio base stations holds said calls in the order of reception thereof, and establishes communication between said portable telephone and said another terminal in the order in which said calls were received when the busy state is cleared.

3. A portable telephone system, comprising:

a switching system;

a plurality of radio base stations, each of said radio base stations respectively connected to said switching system through transmission paths in a respective area; and

a portable telephone connected to said a respective one of said radio base stations through radio transmission paths,

wherein, when a plurality of calls for establishing communication between said portable telephone and another terminal are received at said respective one of said radio base stations in a busy state, said respective one of said radio base stations holds said calls in the order of reception thereof, and informs a user of said portable telephone when communication between said portable telephone and said another terminal can be established as the busy state of said respective one of said radio base stations is cleared, said communication between said portable telephone and said another terminal being established in the order in which said calls are received at said respective one of said radio base stations.