Narrowband system and method for defining narrowband wideband channels in unused wideband channels
First Claim
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1. A method of identifying available wideband channels for use by a narrowband communication system by a base station of the narrowband communication system, the method comprising:
- identifying a plurality of subscriber units of the narrowband communication system in a geographic region, including identifying a location of each of the plurality of subscriber units as reported by the subscriber units;
assigning a narrowband measurement regime to each of the plurality of subscriber units, wherein the narrowband measurement regime identifies at least one narrowband channel to be measured by the subscriber unit in an assigned wideband channel using a narrowband measurement performed in the assigned wideband channel;
receiving measurement results from the plurality of subscriber units, wherein the measurement results are obtained by the subscriber units upon performing their respective measurement regime; and
determining an availability of wideband channels based at least in part on the measurement results.
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Abstract
A narrowband communication system (100) includes a base station (102) and a plurality of subscriber units (104). The base station assigns one or more wideband channels to be measured to each subscriber unit (606). The subscriber units tune to their assigned wideband channels and perform narrowband measurements, then report the results to the base station (612). The base station then analyzes the measurement results (614) and selects available wideband channels to be divided into narrowband channels for use by the narrowband system.
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Citations
21 Claims
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1. A method of identifying available wideband channels for use by a narrowband communication system by a base station of the narrowband communication system, the method comprising:
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identifying a plurality of subscriber units of the narrowband communication system in a geographic region, including identifying a location of each of the plurality of subscriber units as reported by the subscriber units; assigning a narrowband measurement regime to each of the plurality of subscriber units, wherein the narrowband measurement regime identifies at least one narrowband channel to be measured by the subscriber unit in an assigned wideband channel using a narrowband measurement performed in the assigned wideband channel; receiving measurement results from the plurality of subscriber units, wherein the measurement results are obtained by the subscriber units upon performing their respective measurement regime; and determining an availability of wideband channels based at least in part on the measurement results. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A narrowband communication system, comprising:
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a base station, the base station maintaining a channel list and a subscriber location list; and a plurality of subscriber units located in a serving area of the base station and in communication with the base station, wherein the subscriber units are configured to determine and report their location to the base station; wherein the base station is configured to formulate and assign narrowband measurement regimes to each of the plurality of subscriber units, the measurement regimes identifying at least one assigned wideband channel in which to perform a narrowband measurement, and upon receiving results of the narrowband measurements from the plurality of subscriber units the base station determines an availability of wideband channels for secondary narrowband use. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for adding secondary narrowband channels to a pool of narrowband channels, comprising:
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assigning at a base station a narrowband measurement regime to each of a plurality of subscriber units in communication with the base station, each measurement regime indicating a wideband channel in which to perform narrowband measurements; performing the narrowband measurement at each of the subscriber units and obtaining a measurement result; transmitting the measurement result from each subscriber unit to the base station; analyzing the measurement results to determine available wideband channels; and defining secondary narrowband channels in an available wideband channel. - View Dependent Claims (19, 20, 21)
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Specification