Synchronization of a multi-mode base station using a common system clock
View Patent ↗A method for synchronizing a multi-mode base station using one clock, when the systems to be synchronized are a GSM-type telecommunications system, for instance a GSM or EDGE system, and a WCDMA-type telecommunications system. In the method, the clock of the WCDMA-type system or a multiple thereof is selected as the system clock of the multi-mode base station, the system clock of the GSM-type system is implemented using multiples of the frequency of the selected clock, and the frame structure of the GSM-type system is synchronized at intervals of thirteen frames or a multiple of thirteen frames.
1. A method comprising:
synchronizing a multi-mode base station using one clock, when the systems to be synchronized are a GSM-type telecommunications system and a WCDMA-type telecommunications system;
selecting the clock of the WCDMA-type system or a multiple thereof as the system clock of the multi-mode base station;
implementing the system clock of the GSM-type system using multiples of the frequency of the selected clock;
synchronizing the frame structure of the GSM-type system at intervals of thirteen frames or a multiple of thirteen frames.
2. A method as claimed in claim 1 , wherein the system clock of the WCDMA-type system is 3.84 MHz.
3. A method as claimed in claim 1 , wherein the system clock of the GSM-type system is 13 MHz.
4. A method as claimed in claim 1 , wherein the WCDMA-type system is a UMTS system.
5. A method as claimed in claim 1 , wherein the GMS-type system is GSM.
6. A method as claimed in claim 1 , wherein the GMS-type system is GSM/EDGE.
7. A method as claimed in claim 1 , wherein the GMS-type system is GPRS.
8. A method as claimed in claim 1 , wherein the GMS-type system is EGPRS.
9. A method as claimed in claim 1 , wherein the GMS-type system is IS-136HS.
10. An arrangement comprising:
an implementing module configured to implement a system clock of a GSM-type system using multiples of a frequency of a WCDMA-type system clock, wherein the arrangement is configured to synchronize a multi-mode base station using one clock, when the systems to be synchronized are a GSM-type telecommunications system and a WCDMA-type telecommunications system; and
a synchronization module configured to synchronize the frame structure of the GSM-type system at intervals of thirteen frames or a multiple of thirteen frames.
11. An arrangement as claimed in claim 10 , wherein the system clock of the WCDMA-type system is 3.84 MHz.
12. An arrangement as claimed in claim 10 , wherein the system clock of the GSM-type system is 13 MHz.
13. An arrangement as claimed in claim 10 , wherein the WCDMA-type system is a UMTS system.
14. An arrangement as claimed in claim 10 , wherein the GMS-type system is GSM.
15. An arrangement as claimed in claim 10 , wherein the GMS-type system is GSM/EDGE.
16. An arrangement as claimed in claim 10 , wherein the GMS-type system is GPRS.
17. An arrangement as claimed in claim 10 , wherein the GMS-type system is EGPRS.
18. An arrangement as claimed in claim 10 , wherein the GMS-type system is IS-136HS.
19. A multi-mode base station using one clock, the multi-mode base station comprising:
implementing means for implementing a system clock of a GSM-type system using multiples of a frequency of a WCDMA-type system clock; and
synchronizing means for synchronizing the frame structure of the GSM-type system at intervals of thirteen frames or a multiple of thirteen frames.
20. A multi-mode base station using one clock, the multi-mode base station comprising:
an implementing module configured to implement a system clock of a GSM-type system using multiples of a frequency of a WCDMA-type system clock; and
a synchronizing module configured to synchronize the frame structure of the GSM-type system at intervals of thirteen frames or a multiple of thirteen frames.
21. An arrangement, comprising:
implementing means for implementing the system clock of the GSM-type system using multiples of the frequency of the WCDMA-type system clock, wherein synchronizing a multi-mode base station using one clock, when the systems to be synchronized are a GSM-type telecommunications system and a WCDMA-type telecommunications system; and
synchronizing means for synchronizing the frame structure of the GSM-type system at intervals of thirteen frames or a multiple of thirteen frames.