Method of verifying operation of listening control channel
AssigneeEricsson Inc.
InventorsJohnny D. Shepherd, Jeff D. Seifert
Life of this patent
Estimating the term…
Abstract
A base station tunes a transceiver to listen to accesses made by mobile terminals on the base stations own control channel. Once the functionality of the transceiver is verified by correlating the known accesses to the received accesses, the base station then tunes the transceiver to control channels of nearby cells to receive accesses directed to those nearby cells. From these accesses, the MSC can determine carrier-to-interference ratios between the cells.
Claims30
A method of determining interference at a first base station located in a first cell from transceivers operating in a remote cell, said method comprising:
- verifying the operation of a first transceiver used to perform signal strength measurements of signals transmitted by transceivers in the remote cell, wherein said verifying comprises:
- receiving a signal on a first channel associated with the first base station with the first transceiver;
- measuring the signal strength of the signal received on the first channel by the first transceiver;
- determining whether the first transceiver is functional by comparing the signal strength measurements of the signal received by the first transceiver to signal strength measurements of corresponding signal received by a second transceiver at the first base station;
- after verifying that the first transceiver is operational, receiving signals on a second channel associated with a second base station in the remote cell with the first transceiver;
- measuring the signal strength of the signals received by the first transceiver on the second channel;
- and
- determining the interference based on the signal strength of the signals received on the second channel.
A method of determining interference at a first base station located in a first cell from transceivers operating in a remote cell, said method comprising:
- verifying the operation of a first transceiver used to perform signal strength measurements of signals transmitted by transceivers in the remote cell, wherein said verifying comprises:
- listening for an access request on an access channel associated with the first base station with first and second transceivers located at the first base station;
- generating an alarm if the second transceiver receives an access request that was not received by first transceiver;
- after verifying that the first transceiver is operational, receiving signals on a second channel associated with a remote base station in a remote cell with the first transceiver;
- measuring the signal strength of the signals received by the first transceiver on the second channel;
- and
- determining the interference based on the signal strength of the signals received on the second channel.
A method of determining interference at a first base station located in a first cell from transceivers operating in a remote cell, said method comprising:
- verifying the operation of a first transceiver used to perform signal strength measurements of signals transmitted by transceivers in the remote cell, wherein said verifying comprises:
- listening for an access request on a first access channel associated with the first base station with first and second transceivers located at the first base station;
- if an access request is received by said first transceiver, measuring the signal strength of the access request received on the first access channel by the first and second transceivers, and comparing the signal strength measurement of the access request received by the first transceiver to the signal strength measurement of the access request received by the second transceiver;
- generating an alarm if the signal strength measurement of the access request received by the first transceiver does not match the signal strength measurement of the access request received by the second transceiver, or the second transceiver receives an access request that was not received by first transceiver;
- after verifying that the first transceiver is operational, receiving access requests on a second access channel associated with a second base station in the remote cell with the first transceiver;
- measuring the signal strength of the access requests received by the first transceiver on the second access channel;
- and
- determining the interference based on the signal strength of the access received on the second channel by the first transceiver.
A method of verifying the operation of a first transceiver at a home base station used to perform signal strength measurements of signals transmitted to a remote base station, said method comprising:
- receiving an access request on a control channel associated with the local base station with the first transceiver;
- receiving an access request on the control channel associated with the local base station with a second transceiver;
- verifying that the first transceiver is functional by comparing the access request received by the first transceiver with the access request received by the second transceiver.
A method of verifying the operation of a first transceiver at a local base station used to perform signal strength measurements of signals transmitted to a remote base station, said method comprising:
- receiving signals on a local channel associated with the local base station with the first transceiver;
- measuring the signal strength of the signals received on the local channel by the first transceiver;
- determining whether the first transceiver is functional by comparing the signal strength measurements of the signals received by the first transceiver to signal strength measurements of corresponding signals received by a second transceiver at said first base station.
A method of verifying the operation of a first transceiver at a local base station used to perform signal strength measurements of signals transmitted to a remote base station, said method comprising:
- listening for access requests on an access channel associated with the local base station with the first transceiver;
- generating a first alarm if a second transceiver listening on the control channel receives an access request that was not received by first transceiver.
A base station for a communication network, comprising:
- a first transceiver adapted to listen to access requests on a control channel in a remote cell;
- a second transceiver adapted to transmit and receive signals on a local control channel associated with said base station;
- and
- a controller to control the operation of the first and second transceivers and to verify the operation of the first transceiver by comparing signal strength measurements of a signal received by said first and second transceivers on the local control channel.
Dependencies are inferred from the claim text.