Uplink communication in GSM/EDGE system

• US 20060160553A1
• Filed: 12/21/2005
• Published: 07/20/2006
• Est. Priority Date: 01/03/2005
• Status: Active Grant

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Piirainen, Olli
• Granted Patent: US 7,672,642 B2
• Time in Patent Office: Days
• US Class Current: 455/517
• CPC Class Codes: H04L 5/06 the signals being represented by different frequencies combined with time-division multiplexing H04L5/26

Abstract

The invention relates to uplink communication in a GSM/EDGE telecommunication system. In the method according to the invention, at least one wide-band carrier wave in the group of carrier waves is generated in the mobile station by applying linear modulation at a second modulation symbol rate, the second modulation symbol rate being a multiple of the first modulation symbol rate, while preserving the predefined carrier spacing and allowing the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

Claims

1. An uplink communication method in a GSM/EDGE telecommunications system which applies diversity antennas in uplink reception and which GSM/EDGE telecommunications system utilizes a group of carrier waves modulated at a first modulation symbol rate, the carrier waves being separated by a predefined carrier spacing, the method comprising generating, in a mobile station, at least one wide-band carrier wave in the group of carrier waves by applying linear modulation at a second modulation symbol rate, the second modulation symbol rate being a multiple of the first modulation symbol rate, while preserving the predefined carrier spacing and allowing the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

2. The uplink communication method of claim 1, wherein the step of generating comprises generating the at least one wide-band carrier wave, while preserving the duration of a GSM/EDGE burst.

3. The uplink communication method of claim 1, wherein the step of generating comprises generating the at least one wide-band carrier wave by applying an octal phase shift keying.

4. The uplink communication method of claim 1, wherein the first modulation symbol rate is 13/48 MHz and the second modulation symbol rate is 2×

13/48 MHz.

5. The uplink communication method of claim 1, further comprising utilizing an interference rejection combining algorithm in the uplink reception.

6. The uplink communication method of claim 1, further comprising:

signalling, from the mobile station, capability information about the capability of the mobile station to apply the second modulation symbol rate; and

controlling, in a GSM/EDGE telecommunications system infrastructure, whether or not to apply the second modulation symbol rate in the mobile station.

7. A GSM/EDGE telecommunications system which applies diversity antennas in an uplink reception and which GSM/EDGE telecommunications system utilizes a group of carrier waves modulated at a first modulation symbol rate in the uplink, the carrier waves being separated by a predefined carrier spacing, the GSM/EDGE telecommunications system including:

a mobile station including generating means for generating at least one wide-band carrier wave in the group of carrier waves by applying linear modulation at a second modulation symbol rate, the second modulation symbol rate being a multiple of the first modulation symbol rate;

a network element including a wide-band carrier receiver for demodulating the wide-band carrier wave transmitted from the mobile station; and

wherein the GSM/EDGE telecommunications system is configured to preserve the predefined carrier spacing and to allow the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

8. The GSM/EDGE telecommunications system of claim 7, wherein the mobile station is configured to preserve the duration of a GSM/EDGE burst.

9. The GSM/EDGE telecommunications system of claim 7, wherein the generating means are configured to generate the at least one wide-band carrier wave applying an octal phase shift keying.

10. The GSM/EDGE telecommunications system of claim 7, wherein the first modulation symbol rate is 13/48 MHz and the second modulation symbol rate is 2×

13/48 MHz.

11. The GSM/EDGE telecommunications system of claim 7, the GSM/EDGE telecommunications system being configured to utilize an interference rejection combining algorithm in the uplink reception.

12. The GSM/EDGE telecommunications system of claim 7, wherein the mobile station is configured to signal capability information about the capability of the mobile station to apply the second modulation symbol rate;

and

wherein the infrastructure of the GSM/EDGE telecommunications system is configured to control whether or not to apply the second modulation symbol rate in the mobile station.

13. A mobile station of a GSM/EDGE telecommunications system which applies diversity antennas in uplink reception and which GSM/EDGE telecommunications system utilizes a group of carrier waves modulated at a first modulation symbol rate in the uplink, the carrier waves being separated by a predefined carrier spacing, the mobile station including a wide-band carrier wave generator for generating at least one wide-band carrier wave in the group of carrier waves by applying linear modulation at a second modulation symbol rate, the second modulation symbol rate being a multiple of the first modulation symbol rate, while preserving the predefined carrier spacing and allowing the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

14. The mobile station of claim 13, wherein the mobile station is configured to preserve the duration of a GSM/EDGE burst.

15. The mobile station of claim 13, wherein the wide-band carrier wave generator is configured to generate the at least one wide-band carrier wave by applying an octal phase shift keying.

16. The mobile station of claim 13, wherein the first modulation symbol rate is 13/48 MHz and the second modulation symbol rate is 2×

13/48 MHz.

17. The mobile station of claim 13, wherein the GSM/EDGE telecommunications system utilizes an interference rejection combining algorithm in the up-link reception.

18. The mobile station of claim 13, the mobile station being configured to signal information to an infrastructure of the GSM/EDGE telecommunications system about the capability of the mobile station to apply the second modulation symbol rate;

and

wherein the wide-band carrier wave generator is configured to apply a modulation symbol rate according to a control provided by the infrastructure of the GSM/EDGE telecommunications system.

19. A network element of a GSM/EDGE telecommunications system which applies diversity antennas in uplink reception and which GSM/EDGE telecommunications system utilizes a group of carrier waves modulated at a first modulation symbol rate in the uplink, the carrier waves being separated by a predefined carrier spacing, the network element including a wide-band carrier receiver for demodulating a wide-band carrier wave transmitted from a mobile station and modulated with linear modulation at a second modulation symbol rate, the second modulation symbol rate being a multiple of the first modulation symbol rate, while preserving the predefined carrier spacing and allowing the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

20. The network element of claim 19, wherein the GSM/EDGE telecommunications system is configured to preserve the duration of a GSM/EDGE burst.

21. The network element of claim 19, wherein the wide-band carrier receiver is configured to demodulate the wide-band carrier wave by applying an octal phase shift keying.

22. The network element of claim 19, wherein the first modulation symbol rate is 13/48 MHz and the second modulation symbol rate is 2×

13/48 MHz.

23. The network element of claim 19, wherein the network element is configured to utilize an interference rejection combining algorithm in the uplink reception.

24. The network element of claim 19, the network element being configured to receive signalling from the mobile station about the capability of the mobile station to apply the second modulation symbol rate;

and

the network element being configured to signal control information to the mobile station about the modulation symbol rate to be applied in the mobile station.

25. A computer program embodied on a distribution medium, the computer program including encoded instructions for executing a computer process in a GSM/EDGE telecommunications system which applies diversity antennas in uplink reception and which GSM/EDGE telecommunications system utilizes a group of carrier waves modulated at a first modulation symbol rate in the up-link, the carrier waves being separated by a predefined carrier spacing, the computer process including a step of generating, in a mobile station, at least one wide-band carrier wave in the group of carrier waves by applying linear modulation at a second modulation symbol rate, the second modulation symbol rate being a multiple of the first modulation symbol rate, while preserving the predefined carrier spacing and allowing the at least one wide-band carrier wave to overlap with at least one adjacent carrier wave.

26. The computer program of claim 25, wherein the computer process further includes generating the at least one wide-band carrier wave, while preserving the duration of a GSM/EDGE burst.

27. The computer program of claim 25, wherein the computer process further includes generating the at least one wide-band carrier wave in the group of carrier waves by applying an octal phase shift keying.

28. The computer program of claim 25, wherein the first modulation symbol rate is 13/48 MHz and the second modulation symbol rate is 2×

13/48 MHz.

29. The computer program of claim 25, wherein the computer process further includes utilizing an interference rejection combining algorithm in the up-link reception.

30. The computer program of claim 25, wherein the computer process further includes:

signalling, from the mobile station, capability information about the capability of the mobile station to apply the second modulation symbol rate; and

controlling, in a GSM/EDGE telecommunications system infrastructure, whether or not to apply the second modulation symbol rate in the mobile station.