Method of reuse through remote antenna and same channel cell division

• US 5,559,866 A
• Filed: 01/20/1995
• Issued: 09/24/1996
• Est. Priority Date: 06/01/1992
• Status: Expired due to Term

• Current Assignee: Motorola Mobility LLC (Lenovo Group Ltd.)
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: O'Neill, Frank
• Primary Examiner(s): Kuntz, Curtis
• Assistant Examiner(s): OEHLING, GEORGE J
• Application Number:
  US08/376,476
• Time in Patent Office: 613 Days
• Field of Search: 379/58, 379/59, 379/60, 455/33.1, 455/33.2, 455/33.3, 455/33.4, 455/54.1, 455/54.2, 455/56.1, 455/51.2, 455/51.1, 455/38.5, 455/62
• US Class Current: 455/447
• CPC Class Codes: H04W 16/32 Hierarchical cell structures
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 40/02 Communication route or path selection, e.g. power-based or shortest path routing
• CPC Class Codes: H04W 74/00 Wireless channel access
• CPC Class Codes: H04W 84/042 Public Land Mobile systems, e.g. cellular systems
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A method of providing communication services in a cellular communication system which consists of a plurality of service coverage areas having a plurality of shared frequency microcells. Each microcell has an omnidirectional, remote antenna interconnected with a base site. The method consists of receiving a request, at the base site, to provide communication access to a communication unit. A supervisory audio tone is simulcast through each omnidirectional, remote antenna of the plurality of shared frequency microcells. A signal quality factor of a looped-back supervisory audio tone received from the communication unit at each omnidirectional, remote antenna is then measured. A communication link between the communication unit and base site is then established through a selected antenna of said plurality of omnidirectional, remote antennas. The antenna is selected based upon the signal quality factor of the looped-back supervisory audio tone.

Claims

1. In a cellular communication system having a plurality of service coverage areas each with a base site, at least one of the plurality of service coverage areas having a plurality of shared frequency microcells each having an omnidirectional, remote antenna interconnected with the base site, a method of providing communication services comprising the steps of:

receiving a request, at the base site, to provide communication access to a communication unit;

simulcasting supervisory audio tone through each omnidirectional, remote antenna of the plurality of shared frequency microcells;

measuring a signal quality factor of a looped-back supervisory audio tone received from the communication unit at each omnidirectional, remote antenna of the plurality of shared frequency microcells; and

establishing a communication link between the communication unit and base site through a selected antenna of said plurality of omnidirectional, remote antennas of the plurality of shared frequency microcells, said selected antenna being selected based upon said signal quality factor of said looped-back supervisory audio tone received at said selected antenna.

2. The method as in claim 1 wherein the step of receiving a request to provide communication access to a communication unit further includes the step of transferring a resource request, received by a remote antenna from the communication unit, to the base site.

3. The method as in claim 1 wherein the step of receiving a request to provide communication access to a communication unit further includes the step of transferring a handoff request from an adjacent service coverage area of the plurality of areas to the base site.

4. The method as in claim 1 further including the step of comparing the measured signal quality factors of said plurality of omindirectional, remote antenna and selecting the antenna providing the highest relative magnitude signal quality factor as the antenna proximate the communication unit.

5. The method of claim 4 further including the step of re-measuring the signal quality factors of the communication unit through each omnidirectional, remote antenna.

6. The method as in claim 5 further including the step of comparing the re-measured signal quality factors and selecting the antenna providing the highest relative magnitude signal quality factor as the antenna proximate the communication unit.

7. The method as in claim 1 wherein the step of establishing a communication link between the requesting communication unit and base site through the selected antenna further includes the step of allocating an interconnect, with such interconnect including one of an interconnect group comprising wireline and fiber optics, between a switch located at a base site and the selected antenna.

8. The method as in claim 7 further including the step of re-establishing a communication link between the requesting communication unit and base site through the remote antenna based, at least in part, upon remeasured signal quality factors.