| CPC H04W 4/029 (2018.02) | 20 Claims |

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1. A method of conducting localisation based on proximity services (ProSe) for a set of user equipments (UEs) in a fifth generation (5G) network, the method comprising:
initiating a 5G ProSe direct communication between UEs of the set of UEs and a reference UE;
relaying location information from a remote UE included in the set of UEs via the reference UE and a 5G core (5GC) entity for a location management function (LMF);
registering, by the set of UEs, ProSe capabilities thereof with access and mobility management function (AMF), wherein a UE is selected from the set of UEs or from outside the set of UEs when the UE is in device to device (D2D) range as the reference UE, and the reference UE is fulfilled by a positional reference unit (PRU); and
starting, by the LMF, localisation procedures.
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