[Retracted] A Novel Variable Pseudonym Scheme for Preserving Privacy User Location in 5G Networks

Algorithm 2

Allocation of V-RNTI range algorithm.

	Input: IMSI identifier of UE (IMSIUE)Set Avail = 216
(1)	If there are free V-RNTI ranges at VI-pool, then
(2)	Select one free V-RNTI range i (S, M) from
(3)	VI-pool
(4)	Update STATE = 1
(5)	Allocate UE (Si = Mi)
(6)	Else
(7)	Let range x (Sz, Mz) be an V-RNTI range
(8)	Allocated to a UEz where
(9)	TAL(UE) ∩ TAL(UEz) = φ TAL is (Tracking Area List)
(10)	UE (Sz = Mz)
(11)	End if
(12)	Create a new blank record at VI-table
(13)	Insert tuple (IMSI, VIRCV, VIMIN, VIMAX) into new record