Method and home base station for setting up connections for a mobile station using an organization channel and station identifiers

• US 6,314,299 B1
• Filed: 11/01/1999
• Issued: 11/06/2001
• Est. Priority Date: 04/30/1997
• Status: Expired due to Term

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Helms, Jochen, Schreib, Franz
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): Gesesse, Tilahun
• Application Number:
  US09/431,530
• Time in Patent Office: 736 Days
• Field of Search: 455/410, 455/411, 455/435, 455/432, 455/465, 455/455, 455/516, 455/450, 455/509, 455/436, 455/517, 455/414, 455/444
• US Class Current: 455/465
• CPC Class Codes: H04B 7/2668 Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation, for code acquisition H04B1/7075, for code tracking H04B1/7085
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 56/0085 detecting a given structure in the signal
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 92/10 between terminal device and access point, i.e. wireless air interface

Abstract

When a mobile station first initiates a connection, the mobile station is synchronized on the basis of an evaluation of an organization channel in the mobile radio network. The mobile station transmits, in a frequency band of a home base station and to the home base station a message that contains a mobile-station-specific first identifier. The message is received and evaluated by the home base station. If the first identifier matches a second identifier registered for the home base station, a connection is set up between the mobile station and the home base station.

Claims

1. A method of establishing a connection for a mobile station in a mobile radio network, wherein a plurality of base stations are provided in the mobile radio network, and at least one home base station for supplying small cells, and wherein the mobile stations transmit to the home base station in an uplink direction, and the home base station transmits to the mobile station in a downlink direction, the method which comprises:

synchronizing a mobile station and a home base station with a base station of the mobile radio network based on an evaluation of an organization channel in the mobile radio network;

transmitting with the mobile station a message in the uplink direction to the home base station in a frequency band of the home base station, the message containing a mobile-station-specific first identifier;

receiving and evaluating the message by the home base station; and

if the first identifier matches a second identifier registered for the home base station, setting up the connection between the home base station and the mobile station.

2. The method according to claim 1, which comprises providing with the mobile station a changeover between a first operating mode relevant to the home base station and a second operating mode relevant to the base stations in the mobile radio network.

3. A method of establishing a connection for a mobile station in a mobile radio network, wherein a plurality of base stations are provided in the mobile radio network, and at least one home base station for supplying small cells, and wherein the mobile stations transmit to the home base station in an uplink direction, and the home base station transmits to the mobile station in a downlink direction, the method which comprises:

synchronizing a mobile station and a home base station with a base station of the mobile radio network based on an evaluation of an organization channel in the mobile radio network;

selecting a free channel with a home base station;

transmitting a message with the home base station in a downlink direction, the message containing a mobile-station-specific second identifier;

receiving and evaluating the message in the mobile station; and

if the second identifier matches a first identifier assigned to the mobile station, setting up a connection between the home base station and the mobile station.

4. The method according to claim 3, which comprises receiving a third identifier in the home base station from the communications network, and deriving therefrom the second identifier.

5. A home base station connected to a subscriber connection of a communications network, comprising:

a transmitting/receiving device for a carrier for transmitting and receiving radio-frequency signals via a radio interface to a mobile station in accordance with a digital mobile radio standard;

a signal processing device connected to said transmitting/receiving device;

a device connected to said signal processing device for data rate conversion between a data rate of the mobile radio standard and a data rate of the communications network; and

a device for synchronizing a radio transmission of the mobile station and the home base station with a base station of a mobile radio network by evaluation of an organization channel in the mobile radio network.

6. The home base station according to claim 5, wherein said signal processing device is programmed to evaluate a message containing a mobile-station-specific first identifier received from a mobile station and, if the first identifier matches a second identifier registered for the home base station, to authorize a connection to be set up to the mobile station.

7. The home base station according to claim 5, which comprises a device for transmission power adjustment connected to said transmitting/receiving device.

8. The home base station according to claim 7, wherein said device for transmission power adjustment likewise controls a transmission power of the mobile station via a radio interface.

9. The home base station according to claim 5, wherein said transmitting/receiving device has an additional monitoring channel.

10. The home base station according to claim 5, which further comprises a plug-in card for storing therein the second identifier.

11. The home base station according to claim 5, wherein the second identifier carries a validity tag.

12. The home base station according to claim 5, wherein the free channel is selected in a frequency band assigned to the home base station.