Method of invoking privacy on telecommunications network

• US 20040058689A1
• Filed: 07/03/2003
• Published: 03/25/2004
• Est. Priority Date: 01/04/2001
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Kall, Jan, Muhonen, Ahti
• Granted Patent: US 8,150,419 B2
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/303 Terminal profiles
• CPC Class Codes: H04L 67/306 User profiles
• CPC Class Codes: H04L 67/51 Discovery or management thereof, e.g. service location protocol [SLP] or web services
• CPC Class Codes: H04L 67/53 using third party service providers
• CPC Class Codes: H04L 67/55 Push-based network services
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

The present invention concerns an integration construction between a steam boiler provided with a combustion chamber and a steam turbine. The steam is conducted from the steam boiler (10) along a connector to the steam turbine (11) for rotating an electric generator (K) producing electricity. The supply water circulated via the steam boiler (10) is vaporized in a vaporizer (190) located in the steam boiler (10) and superheated in a superheater (120). The supply water is conducted into the boiler through an economizer (20) acting as a heat exchanger, where heat is transferred from the flue gases of the boiler into the supply water. The economizer (20) is provided with at least two sections, comprising at least one first economizer section (20a1) and at least one second economizer section (20a2). The supply water is conducted from the first economizer section (20a1) to a supply water preheater formed from a heat exchanger (14), where thermal energy is transferred from bled steams of the steam turbine either directly or via a medium, advantageously water, into the supply water. The supply water preheated with bled steams of the steam turbine is conducted in the steam boiler (10) to the second economizer section (20a2) and further to the vaporizer (190) and the superheater (120) and therethrough, in the form of steam, to the steam turbine. In the integration construction, the temperature of the supply water is raised continuously as the supply water is flowing in the first economizer section (20a1) and from the first economizer section (20a1) to the supply water preheater (14) and threthrough, to the second economizer section (20a2). The connector (13a1.1) leading to the supply water preheater (14) comprises a valve (21) for controlling the bled-steam flow to the preheater (14). The present invention concerns also a method in the preheating of the supply water for a steam turbine and in its control.

Claims

1. A method of invoking privacy related to a user equipment (UE) in a telecommunications network, characterized by the steps of:

sending (2-2) a location service request from a location service client (Client) to a location service centre (GMLC);

said location service centre (GMLC) sending (2-4) directly to a user equipment (UE) to be located a privacy request prompting the user of said user equipment (UE) to accept or reject the specific location service request;

said user equipment (UE) sending to said location service centre (GMLC) a privacy response (2-18);

said location service centre (GMLC) providing the location information to said requesting client (Client), if said location service request is accepted in said privacy response, and rejecting the location service request otherwise.

2. A method according to claim 1, characterized in that said telecommunications network is a packet-switched network.

3. A method according to claim 1 or 2, characterized in that said user equipment (UE) is packet-mode user equipment in a packet-switched mobile communications network, and that said privacy request and said privacy response are routed between said user equipment and said service location centre through a gateway and serving nodes of said packet-switched mobile communications network.

4. A method according to claim 3, characterized in that responsive to receiving said privacy response from said location service centre (GMLC) at said a gateway node, a packet data protocol context is generated (2-6 . . . 2-16) for said user equipment in said packet switched mobile communications network.

5. A method according to claims 1 to 4, characterized in that said location service centre (GMLC) informs the serving support node (SGSN) of the said packet switched network that the user has already agreed to reveal her location information to the indicated client (Client) so that the serving support node (SGSN) needs not to perform a privacy invocation with the target user equipment (UE).

6. A method according to any one of claims 1 to 5, characterized in that the exchange of said privacy request and privacy response between said location service centre and said user equipment (UE) is authorized and/or secured, preferably by methods such as IP sec, the digital signature or Pretty Good Privacy (PGP).

7. A method according to claim 6, characterized in that said authorization and/or securing is done by one of the following methods:

IP sec, the digital signature or Pretty Good Privacy (PGP).

8. A method according to claim 1 or 7, characterized in that the telecommunications network is a circuit-switched network.

9. A location service centre (GMLC) for providing information on the location of user equipment (UE) in a telecommunications network in response to location service requests received from location service clients, characterized in that

said location service centre (GMLC) is responsive to such location service request for sending directly to a user equipment (UE) to be located a privacy request prompting the user of said user equipment (UE) to accept or reject the specific location service request;

said location service centre (GMLC) is arranged to provide the location information to said requesting client (Client) responsive to a privacy response of said user equipment (UE), if said location service request is accepted in said privacy response, and to reject said location service request otherwise.

10. A location service centre according to claim 9, characterized in that said telecommunications network is a packet-switched network.

11. A location service centre according to claim 9 or 10, characterized in that said user equipment (UE) is packet-mode user equipment in a packet-switched mobile communications network, and that said privacy request and said privacy response are routed between said user equipment (UE) and said service location centre through gateway and serving nodes of said packet-switched mobile communications network.