Location-based, event triggered inter-radio access technology handovers from a CDMA macrocell to a WCDMA femtocell
First Claim
1. A method implemented in a mobile unit that is configured to communicate with a wireless communication system that comprises at least one base transceiver station and at least one femtocell, said at least one base transceiver station using a different radio access technology than said at least one femtocell, the method comprising:
- receiving, at said mobile unit in a connection setup message transmitted by the at least one femtocell, information indicating coordinates of said at least one femtocell;
receiving, at said mobile unit from said at least one base transceiver station, information indicating a threshold distance;
determining, at said mobile unit, a distance between said mobile unit and said at least one femtocell by comparing coordinates of the mobile unit to the coordinates of said at least one femtocell;
transmitting, from said mobile unit to said at least one base transceiver station, a first measurement report in response to the mobile unit determining that the distance between said mobile unit and said at least one femtocell is less than the threshold distance; and
performing an inter-radio access technology handoff from said at least one base transceiver station to said at least one femtocell when the distance between said mobile unit and said at least one femtocell is less than the threshold distance.
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Accused Products
Abstract
The present invention provides a method for implementation in mobile unit that is configured to communicate with a wireless communication system that includes macrocells and femtocells. The macrocells and the femtocells use different generation radio access technologies. The method includes determining a distance between the mobile unit and the femtocell(s) and transmitting a first measurement report when the distance between the mobile unit and the femtocell(s) is less than a threshold distance. The method also includes performing an inter-radio access technology handoff from the base transceiver station to the femtocell when the distance is less than a threshold distance.
38 Citations
13 Claims
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1. A method implemented in a mobile unit that is configured to communicate with a wireless communication system that comprises at least one base transceiver station and at least one femtocell, said at least one base transceiver station using a different radio access technology than said at least one femtocell, the method comprising:
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receiving, at said mobile unit in a connection setup message transmitted by the at least one femtocell, information indicating coordinates of said at least one femtocell; receiving, at said mobile unit from said at least one base transceiver station, information indicating a threshold distance; determining, at said mobile unit, a distance between said mobile unit and said at least one femtocell by comparing coordinates of the mobile unit to the coordinates of said at least one femtocell; transmitting, from said mobile unit to said at least one base transceiver station, a first measurement report in response to the mobile unit determining that the distance between said mobile unit and said at least one femtocell is less than the threshold distance; and performing an inter-radio access technology handoff from said at least one base transceiver station to said at least one femtocell when the distance between said mobile unit and said at least one femtocell is less than the threshold distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method involving a mobile unit that is configured to communicate with a wireless communication system that comprises at least one base transceiver station and at least one femtocell, said at least one base transceiver station using a different radio access technology than said at least one femtocell, the method comprising:
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receiving, at said mobile unit in a connection setup message transmitted by the at least one femtocell, information indicating coordinates of said at least one femtocell; receiving, at said mobile unit from said at least one base transceiver station, information indicating a threshold distance; determining, at said mobile unit, a distance between said mobile unit and said at least one femtocell by comparing coordinates of the mobile unit to the coordinates of said at least one femtocell; and performing an inter-radio access technology handoff of the mobile unit from said at least one base transceiver station to said at least one femtocell in response to the mobile unit determining that the distance between said mobile unit and said at least one femtocell is less than the threshold distance. - View Dependent Claims (10, 11)
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12. A method for implementation in a femtocell that is configured to communicate with a mobile unit, the femtocell using a different radio access technology than a base transceiver station configured to communicate with the mobile unit, the method comprising:
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transmitting, from the femtocell to the mobile unit, a connection setup message including information indicating coordinates of the femtocell; and performing an inter-radio access technology handoff of the mobile unit from the base transceiver station to the femtocell in response to a distance between the mobile unit and the femtocell being less than a threshold distance determined based on a comparison of coordinates of the mobile unit and the coordinates of the femtocell, wherein the threshold distance is provided to the mobile unit by the base transceiver station. - View Dependent Claims (13)
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Specification