Narrowband positioning reference signal configuration
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsSara Modarres Razavi, Ritesh Shreevastav, Fredrik Gunnarsson, Xingqin Lin, Iana Siomina, Yutao Sui, Gerardo Agni Medina Acosta
Life of this patent
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Abstract
Systems and methods for configuring Narrowband Positioning Reference Signals (NPRS) for NB-IoT are provided. A network node generates and transmits NPRS configuration information including a first NPRS bitmap for FDD mode and/or a second NPRS bitmap for TDD mode. A wireless device can determine a NPRS configuration in accordance with the second NPRS bitmap for TDD mode and perform measurements using the NPRS configuration.
Claims26
A method performed by a wireless device, the method comprising:
- receiving Narrowband Positioning Reference Signal (NPRS) configuration information for a cell, the NPRS configuration information including at least one of a first NPRS bitmap for Frequency Division Duplex (FDD) mode and a second NPRS bitmap for Time Division Duplex (TDD) mode, wherein the second NPRS bitmap for TDD is shorter in length than the first NPRS bitmap for FDD, and wherein the second NPRS bitmap for TDD is less than 10 bits in length;
- responsive to determining that the cell operates in TDD mode, determining a NPRS configuration in accordance with the second NPRS bitmap for TDD mode;
- and
- performing measurements using the NPRS configuration.
A wireless device comprising a radio interface and processing circuitry configured to:
- receive Narrowband Positioning Reference Signal (NPRS) configuration information for a cell, the NPRS configuration information including at least one of a first NPRS bitmap for Frequency Division Duplex (FDD) mode and a second NPRS bitmap for Time Division Duplex (TDD) mode, wherein the second NPRS bitmap for TDD is shorter in length than the first NPRS bitmap for FDD, and wherein the second NPRS bitmap for TDD is less than 10 bits in length;
- responsive to determining that the cell operates in TDD mode, determine a NPRS configuration in accordance with the second NPRS bitmap for TDD mode;
- and
- perform measurements using the NPRS configuration.
A method performed by a network node, the method comprising:
- obtaining Narrowband Positioning Reference Signal (NPRS) configuration and one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD) mode information associated with a cell;
- responsive to determining that the cell operates in TDD mode, generating NPRS configuration information for the cell, the NPRS configuration information including a NPRS bitmap for TDD mode, wherein the NPRS bitmap for TDD is shorter in length than an NPRS bitmap for FDD, and wherein the second NPRS bitmap for TDD is less than 10 bits in length;
- and
- transmitting the NPRS configuration information to a wireless device.
A network node comprising a radio interface and processing circuitry configured to:
- obtain Narrowband Positioning Reference Signal (NPRS) configuration and one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD) mode information associated with a cell;
- responsive to determining that the cell operates in TDD mode, generate NPRS configuration information for the cell, the NPRS configuration information including a NPRS bitmap for TDD mode, wherein the NPRS bitmap for TDD is shorter in length than an NPRS bitmap for FDD, and wherein the second NPRS bitmap for TDD is less than 10 bits in length;
- and
- transmit the NPRS configuration information to a wireless device.
Dependencies are inferred from the claim text.