Abstract
A method performed by a network node ( 101) for detecting a false base station in a communications network (100). The network node (101) operates in the communication network (100) and is adapted to serve a network device (120) via a serving Radio Access RA node (110). The network node (110) sends a message to a network device (120) which message comprises configuration data configuring the network device (120) to perform measurements in order to collect information transmitted by network nodes (110) in a surrounding area of the network device (120). The network node (110) further receives a message comprising measurement reports from the network device (120) according to the configuration. The network node (110) further provides an indication that a false base station is present when a difference between the received information in the measurement report and a predetermined target information is detected.
Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
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Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
5G | 22/12/2017 | ISLD-201712-073 | ERICSSON INC | No | Family Member |
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WO2016096836A1 | 5G | 22/12/2017 | ISLD-201712-073 | ERICSSON INC | Yes | Basis Patent | ||||
EP3235279A1 | 5G | 22/12/2017 | ISLD-201712-073 | ERICSSON INC | No | Family Member | ||||
US9838879B2 | 5G | 22/12/2017 | ISLD-201712-073 | ERICSSON INC | No | Family Member | ||||
US2018070239A1 | 5G | 22/12/2017 | ISLD-201712-073 | ERICSSON INC | No | Family Member | ||||
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Claim
1. A method performed by a network node, for detecting a false base station in a communications network, which network node operates in the communication network and wherein the network node is adapted to serve a network device via a serving Radio Access, RA, node, characterized in that the method comprises:
sending a message to a network device, which message comprises configuration data configuring the network device to perform measurements in order to collect information transmitted by network nodes a surrounding area of the network device, receiving a message comprising measurement reports from the network device according to the configuration, providing an indication that a false base station is present when a difference between the received information in the measurement report and a predetermined target information is detected.
2. The method according to claim 1, wherein the method performed by the network node further comprises:
comparing the received information in the measurement report with a predetermined target information in order to detect differences between the received information and the predetermined target information.
3. The method according to claim 1, wherein the method performed by the network node further comprises:
sending a second message to the network device configuring the network device to collect a secondary information.
4. The method according to claim 1, wherein the information transmitted by the network nodes comprises physical cell identifiers, carrier frequencies and pilot signal strengths.
5. The method according to claim 1, wherein the information is collected from frequencies and radio technologies not used when the network node and network device communicate themselves.
6. The method according to claim 1, wherein the target information is cell planning data.
7. The method according to claim 1, wherein the difference between the received information and the target information is detected based on the difference of the pilot signal strength.
8. The method according to claim 1, wherein the difference between the received information and the target information is detected based on a presence of a cell identity in the received information which is not present in the target information.
9. The method according to claim 1, wherein the difference between the collected information and the target information is averaged over a plurality of network devices, and/or over a plurality of measurements made by a single network device and/or over a plurality of measurements made by a plurality of network devices.
10. The method according to claim 3, wherein the secondary information is a System Information Block, SIB.
11. The method according to claim 3, wherein the comparison may comprise verifying that a given cell identifier and Cell Global Identity, CGI, in the secondary information are assigned to the same Tracking Area Code, TAC, or Location Area Code, LAC, as in the secondary target information.
12. The method according to claim 3, wherein the network node configures the network device to perform measurements based on a Minimization to Drive Test, MDT, function.
13. The method according to claim 1, wherein the network node configures the network device to perform measurements using an Automatic Neighbor Relation, ANR, function.
14. The method according to claim 1, wherein the configuration is triggered by an event, which event is a handover or a detection of a pilot signaling strength exceeding a threshold value.
15. A network node for performing a method for detecting a false base station in a communications network, which network node operates in the communication network and wherein the network node is adapted to serve a network device via a serving Radio Access, RA, node, wherein the network node is configured to:
send a message to a network device, which message comprises configuration data for configuring the network device to perform measurements in order to collect information transmitted by network nodes in a surrounding area of the network device, receive a message comprising measurement reports from the network device according to the configuration, provide an indication that a false base station is present, when a difference between the received information in the measurement report and the predetermined target information has been detected.
16. The network node according to claim 15, wherein the network node is further configured to:
compare received information in the measurement report with a predetermined target information in order to detect differences between the received information and the predetermined target information.
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The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.