METHODS IN BASE STATIONS, BASE STATIONS, COMPUTER PROGRAMS AND COMPUTER PROGRAM PRODUCTS
First Claim
1. A method in a first base station serving a first cell having a first coverage area at least partly overlapping with a second coverage area of a second cell served by a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the method comprising the steps of:
- determining radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station,requesting from the second base station, interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by the user equipment (UE1) connected to the first base station and having the radio link quality falling below a threshold value thus indicating poor radio link quality to the first base station, anddeciding for the user equipment (UE1) connected to the first base station, based on the interference related measurements, whether a handover to the second base station should be performed.
2 Assignments
0 Petitions
Accused Products
Abstract
A method in a first base station having a first coverage area at least partly overlapping with a second coverage area of a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range. The method includes determining radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station; requesting from the second base station, interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by UE1 and having the radio link quality falling below a threshold value; and deciding for UE1, based on the interference related measurements, whether a handover to the second base station should be performed.
51 Citations
22 Claims
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1. A method in a first base station serving a first cell having a first coverage area at least partly overlapping with a second coverage area of a second cell served by a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the method comprising the steps of:
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determining radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station, requesting from the second base station, interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by the user equipment (UE1) connected to the first base station and having the radio link quality falling below a threshold value thus indicating poor radio link quality to the first base station, and deciding for the user equipment (UE1) connected to the first base station, based on the interference related measurements, whether a handover to the second base station should be performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A first base station serving a first cell having a first coverage area at least partly overlapping with a second coverage area of a second cell served by a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the first base station including a control circuit configured to:
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determine radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station, request from the second base station interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by the user equipment (UE1) connected to the first base station and having the radio link quality falling below a threshold value thus indicating poor radio link quality to the first base station, and decide for the user equipment (UE1) connected to the first base station, based on the interference related measurements, whether a handover to the second base station should be performed.
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11. A computer program product comprising a computer program stored on a non-transitory medium in a first base station serving a first cell having a first coverage area at least partly overlapping with a second coverage area of a second cell served by a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the computer program comprising computer program code, which, when run on a processing circuit in the first base station, causes the first base station to perform the steps of:
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determining radio link quality of a user equipment (UE1) connected to the first base station and being located in an adjustable extended coverage range of the second base station, requesting from the second base station interference related measurements for unused physical channels or for physical channels at least partially overlapping with physical channels used by the user equipment (UE1) connected to the first base station and having the radio link quality falling below a threshold value thus indicating poor radio link quality to the first base station, and deciding for the user equipment (UE1) connected to the first base station, based on the interference related measurements, whether a handover to the second base station should be performed.
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12. (canceled)
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13. A method in a second base station serving a second cell having a second coverage area at least partly overlapping with a first coverage area of a first cell served by a first base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than power levels of the second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the method comprising the steps of:
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determining a radio link quality for user equipment (UE2) connected to the second base station and being located in an adjustable extended coverage range of the second base station, determining an interference or traffic related parameter for user equipment (UE2) connected to the second base station and having the radio link quality falling below a threshold value thus indicating poor radio link quality to the second base station, and deciding (63) for the user equipment (UE2) connected to the second base station, based on the interference or traffic related parameter, whether a handover to the first base station should be performed. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A computer program product comprising a computer program stored on a non-transitory medium in a second base station serving a second cell having a second coverage area at least partly overlapping with a first coverage area of a first cell served by a second base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the computer program (412) comprising computer program code, which, when run on a processing circuit in the second base station, causes the second base station to perform the steps of:
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determine a radio link quality for user equipment (UE2) connected to the second base station and being located at an adjustable extended coverage range of the second base station, determine an interference or traffic related parameter for user equipment (UE2) connected to the second base station and having the radio link quality falling below a threshold value, and decide for the user equipment (UE2) connected to the second base station, based on the interference or traffic related parameter, whether a handover to the first base station should be performed.
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21. (canceled)
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22. A second base station serving a second cell having a second coverage area at least partly overlapping with a first coverage area of a first cell served by a first base station, the first base station operating within a first transmission power range and the second base station operating within a second transmission power range, the first transmission power range having transmission power levels being higher than transmission power levels of the second transmission power range, the second base station including a control circuit configured to:
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determine a radio link quality for user equipment (UE2) connected to the second base station and being located at an adjustable extended coverage range of the second base station, determine an interference or traffic related parameter for user equipment (UE2) connected to the second base station and having the radio link quality falling below a threshold value, and decide for the user equipment (UE2) connected to the second base station, based on the interference or traffic related parameter, whether a handover to the first base station should be performed.
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Specification