Increased security for multilateration timing advance
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsNicklas Johansson, John Walter Diachina
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Abstract
A positioning node (e.g., SMLC), a Radio Access Network (RAN) Node (e.g., BSS/BTS), and a wireless device (e.g., MS) are described herein which implement procedures and corresponding modified or new messages/information elements/fields to reduce the possibility of a bandit (e.g., invalid or unauthorized) wireless device from triggering the RAN Node (e.g., BSS/BTS) to generate false timing advance (TA) information associated with the wireless device and report the false TA information to the positioning node (e.g., SMLC) which leads the positioning node (e.g., SMLC) to estimate with degraded accuracy a position of the wireless device.
Claims12
A wireless device configured to interact with a positioning node and a Radio Access Network (RAN) node, the wireless device comprising:
- a processor;
- and,
- a memory that stores processor-executable instructions, wherein the processor interfaces with the memory to execute the processor-executable instructions, whereby the wireless device is operable to:
- receive, from the positioning node through the RAN node, a Radio Resource Location Services Protocol (RRLP) Multilateration Timing Advance Request message comprising at least one identifier and indicating a type of Multilateration Timing Advance (MTA) procedure that is to be performed by the wireless device;
- perform the MTA procedure to obtain a Mobile Station (MS) Sync Accuracy parameter and a MS Transmission Offset parameter;
- and,
- transmit, to the RAN node, at least the MS Sync Accuracy parameter, the MS Transmission Offset parameter, and one identifier corresponding to one of the at least one identifier within the RRLP Multilateration Timing Advance Request message, wherein the one identifier also corresponds to a cell in which the wireless device performed the MTA procedure.
A method in a wireless device configured to interact with a positioning node and a Radio Access Network (RAN) node, the method comprising:
- receiving, from the positioning node through the RAN node, a Radio Resource Location Services Protocol (RRLP) Multilateration Timing Advance Request message comprising at least one identifier and indicating a type of Multilateration Timing Advance (MTA) procedure that is to be performed by the wireless device;
- performing the MTA procedure to obtain a Mobile Station (MS) Sync Accuracy parameter and a MS Transmission Offset parameter;
- and,
- transmitting, to the RAN node, at least the MS Sync Accuracy parameter, the MS Transmission Offset parameter, and one identifier corresponding to one of the at least one identifier within the RRLP Multilateration Timing Advance Request message, wherein the one identifier also corresponds to a cell in which the wireless device performed the MTA procedure.
Dependencies are inferred from the claim text.