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US 11,451,963 B2Granted
False base station detection based on downlink silent periods
AssigneeQUALCOMM Incorporated
InventorsHuilin Xu, Gavin Bernard Horn, Ravi Agarwal, Ozcan Ozturk, Soo Bum Lee, Naga Bhushan
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Abstract
Certain aspects of the present disclosure provide techniques for detecting false base stations and transmissions therefrom based on silent periods during which legitimate base stations are to refrain from transmitting at least certain downlink transmissions on at least some downlink resources.
Claims28
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- identify one or more silent periods during which at least a first base station is to refrain from at least certain downlink transmissions on at least some downlink resources;
- randomly choose at least one of the one or more silent periods;
- detect one or more downlink transmissions from a second base station during the one or more silent periods;
- determine the second base station is posing as the first base station based on the detection;
- and
- notify a network entity of the detection;
- and
- a memory coupled with the at least one processor.
6 more elements
An apparatus for wireless communications, comprising:
- at least one processor configured to:
- identify one or more silent periods during which the apparatus is to refrain from transmitting at least certain downlink transmissions on at least some downlink resources;
- randomly choose at least one of the one or more silent periods;
- refrain from transmitting the certain downlink transmissions on the at least some downlink resources during the one or more silent periods;
- and
- receive an indication that at least a first node detected, during the at least one of the one or more silent periods, one or more signals transmitted from a second base station;
- determine the second base station is posing as the apparatus based on the indication;
- and
- a memory coupled with the at least one processor.
6 more elements
A method for wireless communications by a first node, the method comprising:
- identifying one or more silent periods during which at least a first base station is to refrain from at least certain downlink transmissions on at least some downlink resources;
- randomly choosing at least one of the one or more silent periods;
- detecting one or more downlink transmissions from a second base station during the one or more silent periods;
- determining the second base station is posing as the first base station based on the detection;
- and
- notifying a network entity of the detection.
3 more elements
A method for wireless communications by a first base station, the method comprising:
- identifying one or more silent periods during which the first base station is to refrain from transmitting at least certain downlink transmissions on at least some downlink resources;
- randomly choosing at least one of the one or more silent periods;
- refraining from transmitting the certain downlink transmissions on the at least some downlink resources during the one or more silent periods;
- receiving an indication that at least a first node detected, during the at least one of the one or more silent periods, one or more signals transmitted from a second base station;
- and
- determining the second base station is posing as the first base station based on the indication.
3 more elements
Dependencies are inferred from the claim text.