A method and apparatus for suppressing subsequent re-request of a location request, for example a MO-LR request in a GSM communication system, by a mobile station to the network. The first barrel-shifter uses a constraint h\u2032v\u2032+h\u2033v\u2033=hv to shift q\u22121 elements of an input by j0 positions to produce first temporary elements. The bottom electrode has several doped regions arranged in the substrate as an array with several rows and several columns, wherein the doped regions in adjacent columns are arranged alternatively.