Apparatus and method for single-tone device discovery in wireless communication networks

A home NodeB for coordinating communication within a cell served by the home NodeB, the home NodeB comprising:

• processing circuitry arranged to generate a first assignment pattern for discovery signal transmission by a user equipment (UE) in the cell, the first assignment pattern defining patterns at which frequency positions shall vary, in transmission opportunities, at which the UE is permitted to transmit discovery signals in one symbol and on one subcarrier in a corresponding transmission opportunity while maintaining single-carrier properties of low Cubic Metric (CM) or Peak-to-Average Power Ratios (PAPR);
• and
• transceiver circuitry arranged to transmit a radio resource control (RRC) signal that includes information for the first assignment pattern, wherein the processing circuitry is further arranged to apply an orthogonal code coverage (OCC) algorithm or a phase rotational sequence algorithm to the symbol.

A method for device discovery performed by an apparatus in a wireless communication network, the method comprising:

• configuring a single-tone discovery signal for transmission in one symbol and on one subcarrier in a transmission opportunity based on an assignment pattern, the assignment, pattern defining patterns at which frequency positions shall vary, for a set of transmission opportunities, at which the apparatus shall transmit discovery signals in the corresponding transmission opportunity while maintaining single-carrier properties of low Cubic Metric (CM) or Peak-to-Average Power Ratios (PAPR);
• and
• transmitting the single-tone discovery signal in the corresponding transmission opportunity, wherein the assignment pattern is retrieved from a radio resource control (RRC) message defined in accordance with a standard of the 3rd Generation Partnership Project (3 GPP) family of standards and further comprising applying an orthogonal code coverage (OCC) algorithm or a phase rotational sequence algorithm to the symbol.