Wireless communication zone management system

• US 5,586,167 A
• Filed: 05/05/1994
• Issued: 12/17/1996
• Est. Priority Date: 05/23/1991
• Status: Expired due to Term

• Current Assignee: Mitel Networks Corporation
• Original Assignee: Mitel Corporation (Microchip Technology Incorporated)
• Inventors: Handforth, Martin R.
• Primary Examiner(s): Chin, Wellington
• Assistant Examiner(s): Shankar, Vijay
• Application Number:
  US08/238,632
• Time in Patent Office: 957 Days
• Field of Search: 379/58, 379/59, 379/60, 379/61, 379/63, 455/6.1, 455/16, 455/33.1, 455/33.2, 455/55.1, 342/450, 342/457, 342/463, 342/357
• US Class Current: 455/456.2
• CPC Class Codes: H04B 7/26 at least one of which is mobile
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

A wireless communication system formed of a plurality of antennae, the antennae being arranged in a grid pattern over a communication region, wireless portable terminals located within the communication region for emitting and/or receiving electromagnetic signals via the antennae, apparatus for determining the position of at least one of the terminals within the communication region relative to the grid pattern.

Claims

1. A wireless communication system comprising:

(a) a plurality of antennae, the antennae being arranged in an orthogonal grid pattern over a communication region;

(b) wireless portable terminals located within the communication region for emitting and/or receiving electromagnetic signals via said antennae;

(c) means for determining the position of at least one of said terminals within the communication region relative to said grid pattern;

(d) each of said antennae being a leaky coaxial cable, cross-over ones of said cables within the orthogonal grid pattern defining the centers of micro-cells for defining the position of said one terminal;

(e) said means for determining the position of said one terminal having a plurality of first base stations including transceivers each connected to one end of said cables which are parallel in one direction; and

(f) a plurality of second base station including transceivers each connected to one end of said cables which are parallel in a second direction, and further including a transmission line connected to each of the base station.

2. A system as defined in claim 1 in which said one and said second direction are orthogonal to each other.

3. A system as defined in claim 1, in which said means for determining the position further includes processing means connected to the transmission line, the processing means comprising means for storing a predetermined identity of each of said wireless portable terminals associated with a micro-cell, means for detecting the identity of a portable terminal and for detecting the identity of first and second base stations connected to leaky cables which are closest to said wireless portable terminals, for comparing the detected identity of the first and second base stations with said stored predetermined identity and for thereby determining the position of said at least one terminal.

4. A system as defined in claim 3 in which each portable terminal is comprised of means for transmitting an identification signal, in which each base station is comprised of means for generating an identification signal, and means in each base station for transmitting its own identification signal with the identification signal of said one terminal upon reception thereof, to said processing means.

5. A system as defined in claim 4, in which said one terminal is comprised of a beacon transmitter for periodically transmitting a signal comprised of its said identification signal.

6. A system as defined in claim 1, in which said one terminal is comprised of a paging receiver, including means for receiving a signal directed to said one terminal identified by an unique identification signal via at least one base station and an associated leaky cable which is in a micro-cell containing said paging receiver.

7. A system as defined in claim 4, in which said one terminal is comprised of means for transceiving communication signals, means for transmitting identification and supervisory signals, and means for receiving supervisory signals and/or control signals.

8. A system as defined in claim 7 in which the communication signals are voice signals.

9. A system as defined in claim 7 in which each of the base stations includes means for transmitting signals via a related leaky cable to plural portable terminals at different frequencies.

10. A wireless communication system comprising:

(a) a plurality of antennae, the antennae being arranged in a grid pattern over a communication region;

(b) wireless portable terminals located within the communication region for emitting and/or receiving electromagnetic signals via said antennae;

(c) means for determining the position of at least one of said terminals within the communication region relative to said grid pattern; and

(d) the grid comprising at least one elongated leaky coaxial cable located over a communication region on each floor of a multi-storey building, each cable defining a mini-cell for defining the position of said one terminal.

11. A system as defined in claim 10 in which at least some of the leaky coaxial cables are parallel to the same axis.

12. A wireless communication system comprising:

(a) a plurality of antennae, the antennae being arranged in a grid pattern over a communication region;

(b) wireless portable terminals located within the communication region for emitting and/or receiving electromagnetic signals via said antennae;

(c) means for determining the position of at least one of said terminals within the communication region relative to said grid pattern, and

(d) the grid comprising at least a pair of elongated leaky coaxial cables disposed orthogonal to each other and being located over a communication regions on each floor of a multi-storey building, each of said pairs of cables defining a mini-cell for defining the position of said one terminal.