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US 12,339,384 B2Granted
UE positioning aided by reconfigurable reflecting surfaces such as intelligent reflecting surfaces (IRS)
AssigneeNokia Technologies Oy
InventorsFrederico Penna, Daejung Yoon, Stefano Paris, Joerg Schaepperle
Life of this patent
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Abstract
UE positioning is added by use of a reconfigurable reflecting surface (e.g., IRS). The IRS is configured to adjust elements of the surface. The configuration may include signal switching on or off, signal phase, group delay, or signal amplitude. Positioning reference signal transmissions are performed that have line of sight to the UE and that reflect off the IRS. The UE takes measurements for the transmissions and can determine measurement(s) of angle of arrival or time of arrival or reference signal received power, and/or determine a channel estimation. Multiple methods are proposed to provide UE positioning.
Claims16
An apparatus, comprising:
- at least one processor;
- and
- at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to perform:
- sending, with a network node in a wireless network, a request of one or more settings useable with a reconfigurable reflecting surface for adjusting elements of the reconfigurable reflecting surface for one or more positioning reference signal transmissions from a base station toward a user equipment;
- receiving, with the network node, one or more measurements taken with the user equipment for the one or more positioning reference signal transmissions, wherein the one or more positioning reference signal transmissions have a direct path between the base station and the user equipment and a reflection path that reflects off the reconfigurable reflecting surface;
- and
- calculating, with the network node, a position coordinate corresponding to the user equipment using the one or more measurements with knowledge of a location of the reconfigurable reflecting surface;
- wherein the calculating further comprises performing the calculation using a database, the database comprising positioning of user equipment and corresponding measurements and corresponding settings applied with the reconfigurable reflecting surface, that was constructed prior to the sending, receiving, and calculating.
5 more elements
An apparatus, comprising:
- at least one processor;
- and
- at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to perform:
- sending, with a base station in a wireless network and toward both a reconfigurable reflecting surface and a user equipment, a configuration usable with the reconfigurable reflecting surface for adjusting elements of the reconfigurable reflecting surface, the configuration to be used for one or more positioning reference signal transmissions from the base station toward the user equipment, wherein the one or more positioning reference signal transmissions have a direct path between the base station and the user equipment and a reflection path that reflects off the reconfigurable reflecting surface;
- sending, with the base station, a second configuration to the user equipment to cause the user equipment to perform one or more measurements for the one or more positioning reference signal transmissions;
- performing, with the base station, the one or more positioning reference signal transmissions with the user equipment;
- and
- receiving, with the base station, one or more measurement reports comprising indication of the one or more measurements;
- wherein the configuration comprises one or more of signal switching on or off, signal phase, group delay, or signal amplitude.
6 more elements
An apparatus, comprising:
- at least one processor;
- and
- at least one non-transitory memory storing instructions that, when executed with the at least one processor, cause the apparatus to perform:
- receiving, with a user equipment and from a base station in a wireless network, a configuration useable with a reconfigurable reflecting surface for adjusting elements of the reconfigurable reflecting surface, the configuration to be used for one or more positioning reference signal transmissions with the base station toward the user equipment, wherein the one or more positioning reference signal transmissions have a direct path between the base station and the user equipment and a reflection path that reflects off the reconfigurable reflecting surface;
- receiving, with the user equipment and from the network node, a second configuration to cause the user equipment to perform one or more measurements for the one or more positioning reference signal transmissions;
- receiving, with the user equipment and from the network node, the one or more positioning reference signal transmissions;
- performing the one or more measurements on signals received during the one or more positioning reference signal transmissions;
- sending, with the user equipment and toward the network node, one or more measurement reports comprising indication of the one or more measurements;
- and
- resolving a reflector path signal for the reflection path with using the configuration useable with the reconfigurable reflecting surface;
- wherein:
- receiving, with the user equipment and from the network node, the one or more positioning reference signal transmissions further comprises receiving a superposed received signal from the base station with a switching on of the elements in the reconfigurable reflecting surface and receives a direct path signal with a switching off of the elements in the reconfigurable reflecting surface;
- resolving a reflector path signal further comprises subtracting the direct path signal from the superposed received signal.
10 more elements
Dependencies are inferred from the claim text.