User Equipment, UE, (110; 112; 114) comprising processing circuitry to: connect with a cellular network ; detect or connect with one or more additional UEs to form a direct connection with the one or more additional UEs (110; 112; 114); receive, from the cellular network , information allocating a portion of radio spectrum resources, as radio spectrum resources that are dedicated to exchanging signal location parameters that relate to information relevant to UE location determination; receive, via the direct connection with the one or more additional UEs (110; 112; 114) and using the allocated portion of the radio spectrum resources, one or more of the signal location parameters; and determine, based on the received one or more of the signal location parameters, a location of the UE, wherein the information allocating the portion of the radio spectrum resources defines a periodically occurring device-to-device, D2D, positioning zone (310; 510; 610; 710) that is represented by: a Zone Period value that relates to a period with which the D2D positioning zone occurs, the Zone Period being defined with respect to a System Frame Number, SFN, of a cell of the cellular network; and a Zone Start Offset value that relates to an offset relative to an instance of the Zone Period, wherein the periodically occurring D2D positioning zone (310; 510; 610; 710) is additionally represented by: a Sub-frame Bitmap that indicates particular sub-frames that are to be used to exchange the signal location parameters; and a Zone End Offset value that indicates an ending location of the Sub-frame Bitmap. connect with a cellular network ; detect or connect with one or more additional UEs to form a direct connection with the one or more additional UEs (110; 112; 114); receive, from the cellular network , information allocating a portion of radio spectrum resources, as radio spectrum resources that are dedicated to exchanging signal location parameters that relate to information relevant to UE location determination; receive, via the direct connection with the one or more additional UEs (110; 112; 114) and using the allocated portion of the radio spectrum resources, one or more of the signal location parameters; and determine, based on the received one or more of the signal location parameters, a location of the UE, wherein the information allocating the portion of the radio spectrum resources defines a periodically occurring device-to-device, D2D, positioning zone (310; 510; 610; 710) that is represented by: a Zone Period value that relates to a period with which the D2D positioning zone occurs, the Zone Period being defined with respect to a System Frame Number, SFN, of a cell of the cellular network; and a Zone Start Offset value that relates to an offset relative to an instance of the Zone Period, wherein the periodically occurring D2D positioning zone (310; 510; 610; 710) is additionally represented by: a Sub-frame Bitmap that indicates particular sub-frames that are to be used to exchange the signal location parameters; and a Zone End Offset value that indicates an ending location of the Sub-frame Bitmap. a Zone Period value that relates to a period with which the D2D positioning zone occurs, the Zone Period being defined with respect to a System Frame Number, SFN, of a cell of the cellular network; and a Zone Start Offset value that relates to an offset relative to an instance of the Zone Period, wherein the periodically occurring D2D positioning zone (310; 510; 610; 710) is additionally represented by: a Sub-frame Bitmap that indicates particular sub-frames that are to be used to exchange the signal location parameters; and a Zone End Offset value that indicates an ending location of the Sub-frame Bitmap. a Sub-frame Bitmap that indicates particular sub-frames that are to be used to exchange the signal location parameters; and a Zone End Offset value that indicates an ending location of the Sub-frame Bitmap. <EOS>