JPS57206141A - Switching system of channel in busy - Google Patents

Switching system of channel in busy

Info

Publication number
JPS57206141A
JPS57206141A JP56091187A JP9118781A JPS57206141A JP S57206141 A JPS57206141 A JP S57206141A JP 56091187 A JP56091187 A JP 56091187A JP 9118781 A JP9118781 A JP 9118781A JP S57206141 A JPS57206141 A JP S57206141A
Authority
JP
Japan
Prior art keywords
mobile station
channel
signal
receiver
transmitter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56091187A
Other languages
Japanese (ja)
Other versions
JPH0229250B2 (en
Inventor
Toshiyuki Okumura
Toshihiko Shibata
Naoya Morita
Toshihide Komuro
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP56091187A priority Critical patent/JPS57206141A/en
Publication of JPS57206141A publication Critical patent/JPS57206141A/en
Publication of JPH0229250B2 publication Critical patent/JPH0229250B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W99/00—Subject matter not provided for in other groups of this subclass

Abstract

PURPOSE:To abbreviate the channel switching, by eliminating the voice in calling when a mobile station receives a channel switch command signal in a busy mode, eliminating the noise caused by a control signal and then receiving the synchronizing signal mutually between the mobile station and the base station to open again the channel. CONSTITUTION:When a mobile station moves in a busy mode and the S/N of a using channel lowers, a base transmitter/receiver 6 detects the drop of the S/N and transmits it to a switchboard 7 via a signal control line 11. The switchboard 7 sets a new channel number, and a tone signal of a low frequency is transmitted for a prescribed period on a control line 10 and through a tone transmitter/ receiver 21 of the transmitter/receiver 6. A tone transmitter/receiver circuit 20 detects the transmission of the tone signal via a transmitter/receiver 5 of the mobile station. Then a speech transmission/reception control circuit 2 is started to cut off a receiving circuit to a handset 1. Then a channel switch signal is transmitted from the switchboard 7 and received at the mobile station. Thus a new channel is selected. In this case, a synchronizing signal is mutually transmitted and received, and then the receiving circuit is connected to the hand set 1 of the mobile station to allow a call.
JP56091187A 1981-06-12 1981-06-12 Switching system of channel in busy Granted JPS57206141A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56091187A JPS57206141A (en) 1981-06-12 1981-06-12 Switching system of channel in busy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56091187A JPS57206141A (en) 1981-06-12 1981-06-12 Switching system of channel in busy

Publications (2)

Publication Number Publication Date
JPS57206141A true JPS57206141A (en) 1982-12-17
JPH0229250B2 JPH0229250B2 (en) 1990-06-28

Family

ID=14019439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56091187A Granted JPS57206141A (en) 1981-06-12 1981-06-12 Switching system of channel in busy

Country Status (1)

Country Link
JP (1) JPS57206141A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120625A (en) * 1983-12-02 1985-06-28 Nec Corp Busy signal transmission system
JPH04505994A (en) * 1989-06-26 1992-10-15 モトローラ・インコーポレイテッド Synchronization and equalization in TDMA cellular systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120602A (en) * 1976-04-02 1977-10-11 Mitsubishi Electric Corp Press-to-talk communication system
JPS54133802A (en) * 1978-04-08 1979-10-17 Nippon Telegr & Teleph Corp <Ntt> Mobile communication controlling method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52120602A (en) * 1976-04-02 1977-10-11 Mitsubishi Electric Corp Press-to-talk communication system
JPS54133802A (en) * 1978-04-08 1979-10-17 Nippon Telegr & Teleph Corp <Ntt> Mobile communication controlling method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120625A (en) * 1983-12-02 1985-06-28 Nec Corp Busy signal transmission system
JPH04505994A (en) * 1989-06-26 1992-10-15 モトローラ・インコーポレイテッド Synchronization and equalization in TDMA cellular systems

Also Published As

Publication number Publication date
JPH0229250B2 (en) 1990-06-28

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