Base station for a radio communications system

• US 6,687,514 B1
• Filed: 06/12/2000
• Issued: 02/03/2004
• Est. Priority Date: 12/12/1997
• Status: Expired due to Fees

• Current Assignee: Nokia Solutions and Networks GmbH & Co. KG (Nokia Corporation)
• Original Assignee: Siemens AG
• Inventors: Kunze, Holger, Junker, Heiko, Steib, Gerhard, Foissner, Ralf, Spennemann, Peter, Schreib, Franz, Sokat, Jorg, Emmer, Dieter, Dauerer, Jorg, Gardijan, Zoran
• Primary Examiner(s): Tran; Sinh
• Assistant Examiner(s): Nguyen; David Q
• Application Number:
  US09/592,300
• Time in Patent Office: 1,331 Days
• Field of Search: 455/67.14,67.11,622,503,424,425,581 370/347,338,330,321
• US Class Current: 455/561
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: H04W 88/085 Access point devices with remote components

Abstract

A base station for a radio communications systems contains at least one carrier-related transceiver device and at least one central unit for controlling the base station. The transceiver device and the central unit each contain at least one interface device which are connected by at least one individual line in accordance with a point-to-point connection for transmitting traffic data. Therefore, point-to-point connections with individual lines for each transceiver device that do not need to satisfy the requirements of identical lengths are used instead of a bus structure. In this way, an essentially more cost-effective implementation of the transmission of traffic data between the central unit and transceiver device is possible because the data rate can also be increased in accordance with the length of the individual line. A logic bus structure is mapped onto physical point-to-point connections. Traffic data, o&m data and also synchronization data are transmitted using the bus structure. The base station is suitable for use in radio communications systems with GSM, TDMA, CDMA radio interfaces, or other radio interfaces.

Claims

1. In a radio communications system, a base station, comprising:

a least one transceiver device having at least one interface device;

at least one central unit for controlling the base station and having at least one interface device;

at least one individual line for connecting said interface device of said transceiver device to said interface device of said central unit in accordance with a point-to-point connection for transmitting traffic data, said interface device of said transceiver device and said interface device of said central unit being configured for propagation time measurement of a transmission over said individual line; and

at least one of said transceiver device and said central unit having a synchronization device for synchronizing traffic data transmitted on said at least one individual line based on the propagation time measurement.

2. The base station according to claim 1, wherein said central unit has short lines, and said at least one interface device of said central unit is one of a plurality of interface devices connected to one another by said short lines.

3. The base station according to claim 1, wherein said interface device of said transceiver device and said interface device of said central unit have memories so that the traffic data are buffered.

4. The base station according to claim 1, wherein said interface device of said transceiver device and said interface device of said central unit are configured such that the traffic data are transmitted serially.

5. The base station according to claim 1, wherein said individual line is formed by a pair of lines for each transmission direction.

6. The base station according to claim 1, wherein said interface device of said transceiver device and said interface device of said central unit are configured to transmit at least one of clock information and control information.

7. The base station according to claim 1, wherein said interface device of said transceiver device and said interface device of said central unit are configured to transmit information for baseband hopping between carrier-related transceiver devices.

8. The base station according to claim 5, wherein said interface device of said transceiver device and said interface device of said central unit are configured such that real-time information and information for which timing is uncritical are transmitted together over said individual line.

9. The base station according to claim 1, wherein said central unit has a bus structure, and said at least one interface device of said central unit is one of a plurality of interface devices connected to one another by said bus structure.

10. The base station according to claim 9, wherein said bus structure within said central unit contains separate lines for real-time information and for information for which timing is uncritical.

11. The base station according to claim 1, wherein said interface device of said transceiver device and said interface device of said central unit are configured to transmit with a frame-oriented protocol.

12. The base station according to claim 11, wherein a timing pattern of the frame-oriented protocol is oriented according to a timing pattern of a PCM transmission.

13. The base station according to claim 1, wherein said interface device of said transceiver device and said interface device of said central unit are configured to transmit a synchronization signal from said central unit to said transceiver device.

14. The base station according to claim 13, wherein the synchronization signal can be adjusted individually for a plurality of transceiver devices.

15. The base station according to claim 1, wherein said at least one transceiver device is one of a plurality of transceiver devices which use different radio interface standards.

16. The base station according to claim 1, including a second central unit and at least one further individual line, and said at least one transceiver device is additionally connected to said second central unit by said further second individual line in accordance with the point-to-point connection.

17. The base station according to claim 6, wherein said interface device of said transceiver device and said interface device of said central unit are configured such that real-time information and information for which timing is uncritical are transmitted together over said individual line.

18. The base station according to claim 7, wherein said interface device of said transceiver device and said interface device of said central unit are configured such that real-time information and information for which timing is uncritical are transmitted together over said individual line.

19. In a radio communications system, a base station, comprising:

at least two transceiver devices each having at least one interface device;

at least one central unit for controlling the base station and having at least one interface device;

at least one individual line for connecting each of said at least one interface device of said at least two transceiver devices to said at least one interface device of said at least one central unit in accordance with a point-to-point connection for transmitting traffic data, said at least one interface device of said at least two transceiver devices and said at least one interface device of said at least one central unit being configured for propagation time measurements of a transmission over said at least two individual lines; and

at least one of said at least two transceiver devices and said at least one central unit having a synchronization device for synchronizing traffic data transmitted on said at least two individual lines with each other based on the propagation time measurements.