CA2046254A1 - Extended range cordless telephone system - Google Patents

Extended range cordless telephone system

Info

Publication number
CA2046254A1
CA2046254A1 CA2046254A CA2046254A CA2046254A1 CA 2046254 A1 CA2046254 A1 CA 2046254A1 CA 2046254 A CA2046254 A CA 2046254A CA 2046254 A CA2046254 A CA 2046254A CA 2046254 A1 CA2046254 A1 CA 2046254A1
Authority
CA
Canada
Prior art keywords
unit
handset
base
units
base unit
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
CA2046254A
Other languages
French (fr)
Other versions
CA2046254C (en
Inventor
James G. Evans
Gregory Panagopoulos
James Waren Smith
Steve E. Witta
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2046254A1 publication Critical patent/CA2046254A1/en
Application granted granted Critical
Publication of CA2046254C publication Critical patent/CA2046254C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/733—Cordless telephones with a plurality of base stations connected to a plurality of lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/72502—Cordless telephones with one base station connected to a single line
    • H04M1/72505—Radio link set-up procedures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/16—WPBX [Wireless Private Branch Exchange]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

An extended operating range is provided for a portable or handset unit operating within a cordless telephone system. The system employs multiple base units and multiple handset units, with only one of the multiple base units being activated at a time for communicating with a given handset unit. Each of the multiple handset units has an assigned or dedicated base unit with which only it may communicate. Other shared base units with which all the multiple handset units may communicate axe also located in the system which supports multiple simultaneous users. An associated radio link control unit controls the activation and deactivation of the base units which are dispersed through a premises. This control unit also controls the connection of a voice path to the base unit actively communicating with a handset unit. As a user of a handset unit with a call in progress roams around the premises, this base unit monitors the quality of the signal received from the handset unit. If this signal quality deteriorates to below an acceptable level, the base unit notifies the radio link control unit which, in turn, initiates a polling procedure to identify and hand-off the communications to another base unit that is then receiving the signal from the handset unit with an acceptable signal quality. With no calls in progress, both base unit and handset unit transmitters are off thereby avoiding interference to other nearby cordless telephones. All receivers are active, however, in order to respond to incoming calls and service requests. Channel cycling and base unit polling procedures are advantageously employed to insure that incoming or outgoing calls are completed quickly, even though the location of a roaming handset unit may be unknown.
CA002046254A 1990-08-01 1991-07-04 Extended range cordless telephone system Expired - Fee Related CA2046254C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56112390A 1990-08-01 1990-08-01
US561,123 1990-08-01

Publications (2)

Publication Number Publication Date
CA2046254A1 true CA2046254A1 (en) 1992-02-02
CA2046254C CA2046254C (en) 2000-03-07

Family

ID=24240723

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002046254A Expired - Fee Related CA2046254C (en) 1990-08-01 1991-07-04 Extended range cordless telephone system

Country Status (3)

Country Link
KR (1) KR100207973B1 (en)
CA (1) CA2046254C (en)
HK (1) HK131995A (en)

Also Published As

Publication number Publication date
CA2046254C (en) 2000-03-07
HK131995A (en) 1995-09-01
KR100207973B1 (en) 1999-07-15
KR920005519A (en) 1992-03-28

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed