BROADCAST CHANNEL FOR E-UTRA

• US 20080072269A1
• Filed: 04/30/2007
• Published: 03/20/2008
• Est. Priority Date: 04/28/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Montojo, Juan, Malladi, Durga
• Granted Patent: US 8,761,782 B2
• Time in Patent Office: Days
• US Class Current: 725/110
• CPC Class Codes: H04W 48/12 using downlink control channel

Abstract

Systems and methodologies are described that facilitate optimal transmission of system parameter data in a wireless communication system. According to various aspects, a broadcast channel is split into at least two portions, wherein one portion allows for transmission of static system parameter data at a first data rate, and a second portion allows for transmission of semi-static and dynamic parameter data at a second disparate data rate.

Claims

1. A method that facilitates broadcast channel operation, comprising:

splitting a broadcast channel into a plurality of portions, the plurality of portions comprising at least primary broadcast parameters and secondary broadcast parameters, transmission bandwidth of the primary broadcast parameters is less than or equal to the transmission bandwidth of secondary broadcast parameters.

2. The method of claim 1, wherein user equipment (UE) decodes the primary broadcast parameters prior to decoding the secondary broadcast parameters, decoding of the primary broadcast parameters provides an indication of the transmission bandwidth of the secondary broadcast parameters.

3. The method of claim 1, wherein the primary broadcast parameters primarily comprise system parameters and the secondary broadcast parameters primarily comprise cell parameters.

4. The method of claim 3, wherein the primary broadcast parameters are transmitted via a single frequency network (SFN) mode.

5. The method of claim 3, wherein the secondary broadcast parameters are transmitted via a non-SFN mode.

6. The method of claim 5, wherein the non-SFN mode is a cell-specific mode.

7. The method of claim 1, wherein a cyclic prefix is treated as static information.

8. The method of claim 1, wherein system specific parameters are treated as static information.

9. The method of claim 1, wherein cell specific features are treated as semi-static or dynamic.

10. The method of claim 3, wherein the system parameters are sent in a primary broadcast channel (P-BCH).

11. The method of claim 3, wherein the cell parameters are sent in a secondary broadcast channel (S-BCH).

12. The method of claim 10, wherein the primary broadcast channel is sent over an entire system.

13. The method of claim 12, wherein all cells of the system concurrently transmit the P-BCH.

14. The method of claim 13, wherein the system is a synchronous network.

15. The method of claim 1, comprising optimizing data rate transmission via transmitting system information separate from cell specific information.

16. The method of claim 15, wherein system information comprises uplink and downlink system bandwidth information.

17. The method of claim 15, wherein system information cyclic prefix duration information.

18. The method of claim 15, wherein system information comprises multi-media broadcast multicast service information.

19. The method of claim 1, wherein if a user equipment (UE) detects SFN operation, the UE assumes a known longer cyclic prefix duration and a known dense DL reference signal structure for each OFDM symbol used for transmitting a primary broadcast channel (P-BCH).

20. The method of claim 11, the S-BCH is transmitted in every 10 MHz of the system bandwidth.

21. The method of claim 11, wherein if classification of data to be transmitted is uncertain, transmitting such data on the S-BCH.

22. A system that facilitates broadcast channel operation, comprising:

means for analyzing data to be transmitted; and

means for splitting a broadcast channel into a plurality of portions, the plurality of portions comprising at least primary broadcast parameters and secondary broadcast parameters, transmission bandwidth of the primary broadcast parameters is less than or equal to the transmission bandwidth of secondary broadcast parameters.

23. The system of claim 22, further comprising means for optimizing data rate transmission via transmitting system information separate from cell specific information.

24. A computer readable medium having stored thereon computer executable instructions for carrying out the following acts(s):

splitting a broadcast channel into a plurality of parts, the plurality of portions comprising at least primary broadcast parameters and secondary broadcast parameters, transmission bandwidth of the primary broadcast parameters is less than or equal to the transmission bandwidth of secondary broadcast parameters.

25. The computer readable medium of claim 24, wherein user equipment (UE) decodes the primary broadcast parameters prior to decoding the secondary broadcast parameters, decoding of the primary broadcast parameters provides an indication of the transmission bandwidth of the secondary broadcast parameters.

26. The computer readable medium of claim 24, wherein the primary broadcast parameters primarily comprise system parameters and the secondary broadcast parameters primarily comprise cell parameters.

27. The computer readable medium of claim 24, wherein the first broadcast mode is a single frequency network (SFN) mode.

28. The computer readable medium of claim 24, wherein the second broadcast mode is a non-SFN mode.

29. The computer readable medium of claim 24, comprising optimizing data rate transmission via transmitting system information separate from cell specific information.

30. The computer readable medium of claim 24, wherein if classification of data to be transmitted is uncertain, transmitting such data on the S-BCH.

31. A microprocessor having stored thereon computer executable instructions for carrying out the following act(s):

splitting a broadcast channel into a plurality of parts, the plurality of portions comprising at least primary broadcast parameters and secondary broadcast parameters, transmission bandwidth of the primary broadcast parameters is less than or equal to the transmission bandwidth of secondary broadcast parameters.

32. The microprocessor of claim 31, wherein user equipment (UE) decodes the primary broadcast parameters prior to decoding the secondary broadcast parameters, decoding of the primary broadcast parameters provides an indication of the transmission bandwidth of the secondary broadcast parameters.

33. the microprocessor of claim 31, wherein the primary broadcast parameters primarily comprise system parameters and the secondary broadcast parameters primarily comprise cell parameters.

34. The microprocessor of claim 33, wherein the primary broadcast parameters are transmitted via a SFN mode.

35. The microprocessor of claim 33, wherein the secondary broadcast parameters are transmitted via a non-SFN mode.

36. The microprocessor of claim 31, comprising optimizing data rate transmission via transmitting system information separate from cell specific information.

37. The microprocessor of claim 31, wherein if classification of data to be transmitted is uncertain transmitting such data on the S-BCH.

38. A method that facilitates broadcast channel operation, comprising:

splitting a broadcast channel into a plurality of portions, wherein a first portion is used for cell-specific parameters and a second portion comprises system specific parameters; and

the first portion is broadcasting using a non-SFN mode.