Patent ID: 7889726

Claim:
An apparatus comprising a server configured to: detect an anonymity request for a first user equipment, wherein the first user equipment is in communication with a second user equipment over a shared floor; and responsive to said anonymity request, prevent the second user equipment from identifying the first user equipment from at least one user plane message transmitted from the first user equipment to the second user equipment by removing the identification of the first user equipment from the at least one user plane message, the at least one user plane message comprising a unique anonymous token, the unique anonymous token linking the at least one user plane message to the first user equipment to enable another equipment different from the first user equipment and the second user equipment to link the at least one message to the first user equipment based on the anonymous token, while preventing the second user equipment from identifying the first user equipment based on the anonymous token; wherein the server is in communication with a controlling server to control access to the shared floor, and further configured to receive from the controlling server the at least one user plane message including shared floor access control signals, the anonymity request for the first user and the identification of the first user equipment.