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 Radio Access Network (RAN) node configured to interact with a positioning node and a wireless device, the RAN node 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 RAN node is operable to:
- forward a Radio Resource Location Services Protocol (RRLP) Multilateration Timing Advance Request message received from the positioning node to the wireless device, wherein the RRLP Multilateration Timing Advance Request message comprises at least one identifier and indicates a type of Multilateration Timing Advance (MTA) procedure that is to be performed by the wireless device;
- receive, from the wireless device, at least a Mobile Station (MS) Sync Accuracy parameter, a 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;
- determine (timing advance information using at least the MS Sync Accuracy parameter and the MS Transmission Offset parameter, wherein the timing advance information is associated with the wireless device;
- and,
- transmit, to the positioning node, the timing advance information and the one identifier associated with the wireless device.
A method in a Radio Access Network (RAN) node configured to interact with a positioning node and a wireless device, the method comprising:
- forwarding a Radio Resource Location Services Protocol (RRLP) Multilateration Timing Advance Request message received from the positioning node to the wireless device, wherein the RRLP Multilateration Timing Advance Request message comprises at least one identifier and indicates a type of Multilateration Timing Advance (MTA) procedure that is to be performed by the wireless device;
- receiving, from the wireless device, at least a Mobile Station (MS) Sync Accuracy parameter, a 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;
- determining timing advance information using at least the MS Sync Accuracy parameter and the MS Transmission Offset parameter, wherein the timing advance information is associated with the wireless device;
- and,
- transmitting, to the positioning node, the timing advance information and the one identifier associated with the wireless device.
Dependencies are inferred from the claim text.