Uplink interference reduction in wireless communication systems
First Claim
1. A method of operating a terminal in a wireless communications system, the system having a plurality of uplink and downlink channels available for use, the terminal being arranged to use an uplink channel and a downlink channel selected from the plurality, the method comprising:
- determining whether the terminal is transmitting at a power which may cause interference to an adjacent uplink channel;
determining which downlink channel is associated with the adjacent uplink channel;
monitoring that downlink channel and deciding, on the basis of the monitoring, whether there is a need to operate the terminal in a manner which will reduce interference.
3 Assignments
0 Petitions
Accused Products
Abstract
A wireless communications system has a plurality of uplink and downlink channels available for use. Channels are distributed among different operators who may plan their networks in a non-ideal manner. A terminal uses an uplink channel and a downlink channel selected from those available and performs a method to check whether it is causing interference to other users of the system. The method determines whether the terminal is transmitting at a power which may cause interference to an adjacent uplink channel. If so, the terminal determines which downlink channel is associated with the adjacent uplink channel and monitors that downlink channel. The terminal may then operate in a manner which will reduce interference.
52 Citations
34 Claims
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1. A method of operating a terminal in a wireless communications system, the system having a plurality of uplink and downlink channels available for use, the terminal being arranged to use an uplink channel and a downlink channel selected from the plurality, the method comprising:
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determining whether the terminal is transmitting at a power which may cause interference to an adjacent uplink channel;
determining which downlink channel is associated with the adjacent uplink channel;
monitoring that downlink channel and deciding, on the basis of the monitoring, whether there is a need to operate the terminal in a manner which will reduce interference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A control apparatus for a terminal in a wireless communications system, the system having a plurality of uplink and downlink channels available for use, the terminal being arranged to use an uplink channel and a downlink channel selected from the plurality, the control apparatus comprising:
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means for determining whether the terminal is transmitting at a power which may cause interference to an adjacent uplink channel;
means for determining which downlink channel is associated with the adjacent uplink channel;
means for monitoring that downlink channel and deciding, on the basis of the monitoring, whether there is a need to operate the terminal in a manner which will reduce interference. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of handling a connection between a terminal and a base station in a wireless communications system having a plurality of uplink and downlink channels available for use, the method comprising:
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assigning an uplink channel and a downlink channel to the connection;
determining, during the call, whether the terminal is transmitting at a power which may cause interference to an adjacent uplink channel;
determining which downlink channel is associated with the adjacent uplink channel;
monitoring that downlink channel and deciding, on the basis of the monitoring, whether there is a need to operate the terminal in a manner which will reduce interference.
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34. Software for operating a terminal in a wireless communications system, the system having a plurality of uplink and downlink channels available for use, the terminal being arranged to use an uplink channel and a downlink channel selected from the plurality, the software being arranged to cause a control apparatus of the terminal to perform the steps of:
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determining whether the terminal is transmitting at a power which may cause interference to an adjacent uplink channel;
determining which downlink channel is associated with the adjacent uplink channel;
monitoring that downlink channel and deciding, on the basis of the monitoring, whether there is a need to operate the terminal in a manner which will reduce interference.
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Specification