System and method for identifying hot spots in the D-AMPS wireless system
AssigneeEricsson Inc.
InventorShawn Kim
Life of this patent
Estimating the term…
Abstract
The present invention is a system and method to provide a scientific and quantitative measurement in finding optimal locations for placing new micro or pico cells. Signal strength information of a test transmitter measured by mobile stations is reported to a base station serving a macro cell via call quality messages that the mobile stations are located. A post-processing tool 330 counts the number of call quality messages having a signal strength level measured from the test transmitter above a threshold during a measuring period indicating that a call can be offloaded to the new micro or pico cell. The estimated offloaded traffic volume is then calculated, preferably in Erlangs.
Claims25
A method for determining high traffic regions of subscribers operating in a macro cell of a cellular communication system, said method comprising the steps of:
- transmitting a signal from a test transmitter;
- receiving a message containing signal strength information of said signal transmitted from said test transmitter;
- setting a signal strength threshold value for the signal strength information to be compared;
- and
- processing said message in accordance with the signal strength threshold value to determine an estimated offloaded traffic volume for said cellular communication system, said processing including:
- extracting said signal strength information from said message;
- and
- computing said estimated offloaded traffic volume, said computing including:
- counting said call quality messages having said signal strength measurement above a threshold value into a total count, wherein any of said signal strength messages above said threshold value indicates that a given call is capable of being offloaded;
- and
- dividing said total count by a duration of time over which said step of counting is performed.
A cellular communication system for determining high traffic regions of subscriber stations operating in a macro cell of said cellular communication system, said cellular communication system comprising:
- a test transmitter for transmitting a signal;
- a receiver for receiving a message containing signal strength information of said test transmitter, said message being transmitted by said subscriber stations;
- and
- a processor for processing said message in accordance with a signal strength threshold value to determine an estimated offloaded traffic volume from said macro cell, said estimated offloaded traffic volume is computed on said processor by:
- counting said call quality messages having said signal strength information above a threshold value into a total count, wherein any of said messages having signal strength information above said threshold value indicates that a given call is capable of being offloaded from said macro cell;
- and
- dividing said total count by a duration of time over which said step of counting is performed.
A method for determining high traffic regions of subscribers operating in a macro cell of a cellular communications system, said method comprising the steps of:
- receiving a definition of a virtual cell for said cellular communication system;
- transmitting a signal having a frequency number matching a channel control number associated with said virtual cell;
- setting a signal strength threshold value;
- receiving at least one message containing signal strength information;
- and
- processing the at least one message in accordance with the signal strength threshold value to determine an estimated offloaded traffic volume of said subscribers, said processing further including:
- counting said at least one message having signal strength information above a threshold value to produce a total count, wherein said threshold value indicates that a call is capable of being handed off to a new cell;
- and
- computing said offloaded traffic volume by dividing said total count by a measuring period for said step of counting.
A method for determining high traffic regions of subscribers operating in a macro cell of a cellular communication system, said method comprising the steps of:
- transmitting a signal from a test transmitter;
- receiving a message containing signal strength information of said signal transmitted from said test transmitter;
- and
- processing said message to determine an estimated offloaded traffic volume for said cellular communication system, said processing including:
- extracting said signal strength information from said message;
- and
- computing said estimated offloaded traffic volume, said computing including:
- counting said call quality messages having said signal strength measurement above a threshold value into a total count, wherein any of said signal strength messages above said threshold value indicates that a given call is capable of being offloaded;
- and
- dividing said total count by a duration of time over which said step of counting is performed.
A cellular communication system for determining high traffic regions of subscriber stations operating in a macro cell of said cellular communication system, said cellular communication system comprising:
- a test transmitter for transmitting a signal;
- a receiver for receiving a message containing signal strength information of said test transmitter, said message being transmitted by said subscriber stations;
- and
- a processor for processing said message to determine an estimated offloaded traffic volume from said macro cell, said processor determining the estimated offload by:
- counting said call quality messages having said signal strength information above a threshold value into a total count, wherein any of said messages having signal strength information above said threshold value indicates that a given call is capable of being offloaded from said macro cell;
- and
- dividing said total count by a duration of time over which said step of counting is performed.
A method for determining high traffic regions of subscribers operating in a macro cell of a cellular communications system, said method comprising:
- receiving a definition of a virtual cell for said cellular communication system;
- transmitting a signal having a frequency number matching a channel control number associated with said virtual cell;
- receiving at least one message containing signal strength information;
- processing the at least one message to determine an estimated offloaded traffic volume of said subscribers, said processing including:
- counting said at least one message having signal strength information above a threshold value to produce a total count, wherein said threshold value indicates that a call is capable of being handed off to a new cell;
- and
- computing said offloaded traffic volume by dividing said total count by a measuring period for said step of counting.
Dependencies are inferred from the claim text.