Handling communication interference in wireless systems
First Claim
1. In a first wireless network comprising at least one first base station and at least one first subscriber device, wherein interferences are experienced in communications conducted between said at least one first subscriber device and said at least one first base station and wherein said interferences result from the operation of a second wireless network comprising at least one second base station and at least one second subscriber device, a method for reducing said interferences which comprises:
- transmitting from said at least first subscriber device an adjustment signal;
receiving said adjustment signal at said second base station and retrieving therefrom adjustment information;
based on the adjustment information thus retrieved, determining at said second base station whether a change in its transmissions should be effected, wherein carrying out said change would result in reducing the interferences experienced at said at least first subscriber device.
5 Assignments
0 Petitions
Accused Products
Abstract
A method and devices are provided to allow reducing interferences occurring in adjacent wireless communication networks. When a subscriber device experiences interferences resulting from the operation of an adjacent wireless network, it transmits an adjustment signal which serves as a request for adjustment, to the base station operative at the adjacent wireless communication network. The adjacent base station that receives the adjustment signal retrieves adjustment information therefrom, and based on the retrieved information will determine whether it should effect a change in its transmission that would result in reducing the interferences experienced at the subscriber device sending the adjustment signal.
26 Citations
34 Claims
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1. In a first wireless network comprising at least one first base station and at least one first subscriber device, wherein interferences are experienced in communications conducted between said at least one first subscriber device and said at least one first base station and wherein said interferences result from the operation of a second wireless network comprising at least one second base station and at least one second subscriber device, a method for reducing said interferences which comprises:
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transmitting from said at least first subscriber device an adjustment signal; receiving said adjustment signal at said second base station and retrieving therefrom adjustment information; based on the adjustment information thus retrieved, determining at said second base station whether a change in its transmissions should be effected, wherein carrying out said change would result in reducing the interferences experienced at said at least first subscriber device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. In a first wireless network comprising at least one first base station and at least one first subscriber device, wherein interferences are experienced in communications conducted between said at least one first subscriber device and said at least one first base station and wherein said interferences result from the operation of a second wireless network comprising at least one second base station and at least one second subscriber device, a method for reducing said interferences which comprises:
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transmitting from said at least first subscriber device an adjustment signal; receiving said adjustment signal at said second base station and retrieving therefrom adjustment information; based on the adjustment information thus retrieved, determining at said second base station whether a change in its transmissions should be effected, wherein carrying out said change would result in reducing the interferences experienced at said at least first subscriber device, and wherein said method further comprising a step of carrying out an adjustment in transmissions from said second base station, based on said information retrieved, and wherein in said step of carrying out an adjustment comprises effecting a change in the timing of transmissions being at a frequency which is substantially the same frequency as that in which said at least first subscriber device is operative, or effecting a change in the antenna beam directing, or effecting a change in direction of nulls in the beam pattern, or effecting a change in the power of at least the transmissions being at a frequency which is substantially the same frequency as that in which said at least first subscriber device is operative, or any combination thereof.
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20. In a first wireless network comprising at least one first base station and at least one first subscriber device, wherein interferences are experienced in communications conducted between said at least one first subscriber device and said at least one first base station and wherein said interferences result from the operation of a second wireless network comprising at least
one second base station and at least one second subscriber device, a method for reducing said interferences which comprises: -
transmitting from said at least first subscriber device an adjustment signal; receiving said adjustment signal at said second base station and retrieving therefrom adjustment information; based on the adjustment information thus retrieved, determining at said second base station whether a change in its transmissions should be effected, wherein carrying out said change would result in reducing the interferences experienced at said at least first subscriber device, and wherein in response to the information retrieved from said adjustment signal, said at least one second base station transmits to said at least one second subscriber device a signal indicating a change to be effected in transmissions from said at least one second subscriber device to said at least one second base station, wherein carrying out said change would result in reducing the interferences affecting communication between said at least one first base station and said at least one first subscriber device.
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21. In a first wireless network comprising at least one first base station and at least one first subscriber device, wherein interferences are experienced in communications conducted between said at least one first subscriber device and said at least one first base station and wherein said interferences result from the operation of a second wireless network comprising at least one second base station and at least one second subscriber device, a method for reducing said interferences which comprises:
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transmitting from said at least first subscriber device an adjustment signal; receiving said adjustment signal at said second base station and retrieving therefrom adjustment information; based on the adjustment information thus retrieved, determining at said second base station whether a change in its transmissions should be effected, wherein carrying out said change would result in reducing the interferences experienced at said at least first subscriber device, and dividing DL sub-frames transmitted by said first and second base stations into essentially synchronized slots, where each DL transmission starts at a corresponding slot boundary, and where there is a one-to one correspondence between said slots and slots allocated for the transmission of said adjustment signals. - View Dependent Claims (22, 23, 24, 25)
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26. In a first wireless network comprising at least one first base station and at least one first subscriber device, wherein interferences are experienced in communications conducted between said at least one first subscriber device and said at least one first base station and wherein said interferences result from the operation of a second wireless network comprising at least one second base station and at least one second subscriber device, a method for reducing said interferences which comprises:
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transmitting from said at least first subscriber device an adjustment signal; receiving said adjustment signal at said second base station and retrieving therefrom adjustment information; based on the adjustment information thus retrieved, determining at said second base station whether a change in its transmissions should be effected, wherein carrying out said change would result in reducing the interferences experienced at said at least first subscriber device, wherein said method comprises a step of making, at said at least one second subscriber device, a decision whether to transmit an adjustment signal, and wherein said step of making a decision is based on estimating the interferences caused by that at least one second subscriber device to the communication held with said at least one first subscriber device.
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27. A base station operative to operate in a wireless network and comprising:
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an interface operative to allow communication between said base station and a communication network associated therewith; at least one radio transceiver operative at least one frequency and capable of transmitting communication traffic towards at least one subscriber device and receive communication traffic therefrom, and further operative to receive an adjustment signal transmitted from at least one further subscriber device associated with a different wireless network; at least one processor operative to; retrieve adjustment information from said adjustment signal received; determine whether to effect a change in transmissions from said base station and/or from any of said at least one subscriber device to enable reducing interference occurring in communications with said at least one further subscriber device, and if in the affirmative, determine the change that should be effected. - View Dependent Claims (28, 29, 31)
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30. A base station, operative to operate in a wireless network and comprising:
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an interface operative to allow communication between said base station and a communication network associated therewith; at least one radio transceiver operative at least one frequency and capable of transmitting communication traffic towards at least one subscriber device and receive communication traffic therefrom, and further operative to receive an adjustment signal transmitted from at least one further subscriber device associated with a different wireless network; at least one processor adapted operative to; retrieve adjustment information from said adjustment signal received; determine whether to effect a change in transmissions from said base station and/or from any of said at least one subscriber device to enable reducing interference occurring in communications with said at least one further subscriber device, and if in the affirmative, determine the change that should be effected, and wherein said base station is further operative to transmit an indication signal to said at least one subscriber device in response to the information retrieved from said adjustment signal, wherein said indication signal indicates a change to be effected in transmissions from said at least one subscriber device in order to reduce interferences affecting communication between said at least one further subscriber device and a base station associated therewith.
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32. A subscriber device operative to operate in a wireless network and comprising:
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an interface operative to allow communication between said subscriber device and at least one base station; at least one radio transceiver operative at least one frequency and adapted to transmit communication traffic towards said at least one base station and receive communication traffic therefrom; establish which of the channels carrying traffic to or from said subscriber terminal experience such interferences; wherein said at least one radio transceiver is adapted to transmit a radio adjustment signal to be received by at least one further base station which signal characterizes the communication to and/or from said subscriber device that is subjected to interferences by communications carried between said at least one further base station and at least one further subscriber device associated therewith. - View Dependent Claims (33, 34)
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Specification