Signaling whether a network has broadcast system information

1. A method for signaling a broadcast of a message, the method comprising:

determining that a first message is to be broadcast in a cell, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications;

generating a second message that is a System Information Type 3 message, the second message comprises an indication that the first message is to be broadcast, wherein the indication comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the indication indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message; and

broadcasting the second message to general packet radio service (GPRS) and non-GPRS wireless communication devices.

2. The method of claim 1 , wherein the indication is in System Information Type 3 Rest Octets in the System Information Type 3 message.

3. The method of claim 2 , wherein the first message is a System Information Type 21 message.

4. The method of claim 3 , wherein the System Information Type 3 message does not comprise a WHERE field.

5. The method of claim 3 , wherein the System Information Type 3 message further comprises a System Information Type 21 position indicator.

6. The method of claim 5 , wherein the System Information Type 21 position indicator is set to BCCH Norm.

7. The method of claim 5 , wherein the System Information Type 21 position indicator is set to BCCH Extended.

8. The method of claim 1 , wherein the System Information Type 3 message comprises a WHERE field.

9. The method of claim 8 , further comprising:

generating a System Information Type 9 message; and

broadcasting the System Information Type 9 message.

10. The method of claim 9 , wherein the System Information Type 9 comprises an indication in System Information Type 9 Rest Octets that indicates that the first message is to be broadcast.

11. The method of claim 1 , wherein the method is performed by a base station.

12. The method of claim 1 , wherein the barring indications comprises Extended Access Barring information.

13. An apparatus for signaling a broadcast of a first message, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable by the processor to:

determine that a first message is to be broadcast in a cell, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications;

generate a second message that is a System Information Type 3 message, the second message comprises an indication that the first message is to be broadcast, wherein the indication comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the indication indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message; and

broadcast the second message to general packet radio service (GPRS) and non-GPRS wireless communication devices.

14. The apparatus of claim 13 , wherein the indication is in System Information Type 3 Rest Octets in the System Information Type 3 message.

15. The apparatus of claim 14 , wherein the first message is a System Information Type 21 message.

16. The apparatus of claim 15 , wherein the System Information Type 3 message does not comprise a WHERE field.

17. The apparatus of claim 15 , wherein the System Information Type 3 message further comprises a System Information Type 21 position indicator.

18. The apparatus of claim 17 , wherein the System Information Type 21 position indicator is set to BCCH Norm.

19. The apparatus of claim 17 , wherein the System Information Type 21 position indicator is set to BCCH Extended.

20. The apparatus of claim 13 , wherein the instructions are further executable to:

generate a third message, wherein the third message indicates that the second message has been broadcast; and

broadcast the third message.

21. The apparatus of claim 20 , wherein the second message is a System Information Type 9 message, wherein the third message is a System Information Type 3 message, and wherein the System Information Type 3 message comprises a WHERE field.

22. The apparatus of claim 21 , wherein the indication is in System Information Type 9 Rest Octets in the System Information Type 9 message.

23. The apparatus of claim 13 , wherein the apparatus is a base station.

24. The apparatus of claim 13 , wherein the barring indications comprises Extended Access Barring information.

25. A method for detecting a broadcast of a first message, the method comprising:

receiving a second message that is a System Information Type 3 message at one or more of a general packet radio service (GPRS) and a non-GPRS wireless communication device, wherein the System Information Type 3 message comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the System Information Type 3 message indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message;

decoding the second message; and

using the second message to determine whether a first message has been broadcast, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications.

26. The method of claim 25 , wherein the first message is a System Information Type 21 message.

27. The method of claim 26 , wherein using the second message to determine whether a System Information Type 21 message has been broadcast comprises:

determining that the second message comprises a WHERE field;

decoding all fields from System Information Type 3 Rest Octets in the System Information Type 3 message; and

determining whether the System Information Type 3 Rest Octets comprise a System Information Type 21 message indicator.

28. The method of claim 27 , wherein the System Information Type 3 Rest Octets does not comprise a System Information Type 21 message indicator, and wherein using the second message to determine whether a System Information Type 21 message has been broadcast further comprises determining that a System Information Type 21 message is not broadcast in a cell.

29. The method of claim 27 , wherein the System Information Type 3 Rest Octets comprise a System Information Type 21 message indicator, and wherein using the second message to determine whether a System Information Type 21 message has been broadcast further comprises determining that a System Information Type 21 message is broadcast in a cell.

30. The method of claim 29 , wherein the System Information Type 3 message further comprises a System Information Type 21 position indicator.

31. The method of claim 30 , wherein the System Information Type 21 position indicator is set to BCCH Norm.

32. The method of claim 30 , wherein the System Information Type 21 position indicator is set to BCCH Extended.

33. The method of claim 26 , further comprising receiving a third message, wherein the third message indicates that the second message has been broadcast.

34. The method of claim 33 , further comprising determining that the third message does not comprise a WHERE field, wherein the second message is a System Information Type 9 message, and wherein the third message is a System Information Type 3 message.

35. The method of claim 34 , wherein the System Information Type 9 message does not comprise a System Information Type 21 message indicator, and wherein using the second message to determine whether a System Information Type 21 message has been broadcast further comprises determining that a System Information Type 21 message is not broadcast in a cell.

36. The method of claim 34 , wherein the System Information Type message comprises a System Information Type 21 message indicator, and wherein using the second message to determine whether a System Information Type 21 message has been broadcast further comprises determining that a System Information Type 21 message is broadcast in a cell.

37. The method of claim 25 , wherein the barring indications comprises Extended Access Barring information.

38. A wireless communication device for detecting a broadcast of a first message, comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable by the processor to:

receive a second message that is a System Information Type 3 message at one or more of a general packet radio service (GPRS) and a non-GPRS wireless communication device, wherein the System Information Type 3 message comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the System Information Type 3 message indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message;

decode the second message; and

use the second message to determine whether a first message has been broadcast, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications.

39. The wireless communication device of claim 38 , wherein the first message is a System Information Type 21 message.

40. The wireless communication device of claim 39 , wherein the instructions executable to use the second message to determine whether a System Information Type 21 message has been broadcast comprise instructions executable to:

determine that the second message comprises a WHERE field;

decode all fields from System Information Type 3 Rest Octets in the System Information Type 3 message; and

determine whether the System Information Type 3 Rest Octets comprise a System Information Type 21 message indicator.

41. The wireless communication device of claim 40 , wherein the System Information Type 3 Rest Octets does not comprise a System Information Type 21 message indicator, and wherein the instructions executable to use the second message to determine whether a System Information Type 21 message has been broadcast further comprise instructions executable to determine that a System Information Type 21 message is not broadcast in a cell.

42. The wireless communication device of claim 40 , wherein the System Information Type 3 Rest Octets comprise a System Information Type 21 message indicator, and wherein the instructions executable to use the second message to determine whether a System Information Type 21 message has been broadcast further comprise instructions executable to determine that a System Information Type 21 message is broadcast in a cell.

43. The wireless communication device of claim 42 , wherein the System Information Type 3 message further comprises a System Information Type 21 position indicator.

44. The wireless communication device of claim 43 , wherein the System Information Type 21 position indicator is set to BCCH Norm.

45. The wireless communication device of claim 43 , wherein the System Information Type 21 position indicator is set to BCCH Extended.

46. The wireless communication device of claim 39 , wherein the instructions are further executable to receive a third message, wherein the third message indicates that the second message has been broadcast.

47. The wireless communication device of claim 46 , wherein the instructions are further executable to determine that the third message does not comprise a WHERE field, wherein the second message is a System Information Type 9 message, and wherein the third message is a System Information Type 3 message.

48. The wireless communication device of claim 47 , wherein the System Information Type 9 message does not comprise a System Information Type 21 message indicator, and wherein the instructions executable to use the second message to determine whether a System Information Type 21 message has been broadcast further comprise instructions executable to determine that a System Information Type 21 message is not broadcast in a cell.

49. The wireless communication device of claim 47 , wherein the System Information Type message comprises a System Information Type 21 message indicator, and wherein the instructions executable to use the second message to determine whether a System Information Type 21 message has been broadcast further comprise instructions executable to determine that a System Information Type 21 message is broadcast in a cell.

50. The wireless communication device of claim 38 , wherein the barring indications comprises Extended Access Barring information.

51. A non-transitory computer-readable medium having instructions thereon, the instructions comprising:

code for causing a base station to determine that a first message is to be broadcast in a cell, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications;

code for causing the base station to generate a second message that is a System Information Type 3 message, the second message comprises an indication that the first message is to be broadcast, wherein the indication comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the indication indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message; and

code for causing the base station to broadcast the second message to general packet radio service (GPRS) and non-GPRS wireless communication devices.

52. The non-transitory computer-readable medium of claim 51 , wherein the first message is a System Information Type 21 message.

53. A non-transitory computer-readable medium having instructions thereon, the instructions comprising:

code for causing one or more of a general packet radio service (GPRS) and a non-GPRS wireless communication device to receive a second message that is a System Information Type 3 message, wherein the System Information Type 3 message comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the System Information Type 3 message indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message;

code for causing the one or more of a GPRS and a non-GPRS wireless communication device to decode the second message; and

code for causing the one or more of a GPRS and a non-GPRS wireless communication device to use the second message to determine whether a first message has been broadcast, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications.

54. The non-transitory computer-readable medium of claim 53 , wherein the first message is a System Information Type 21 message.

55. A wireless communication device for signaling a broadcast of a message, comprising:

means for determining that a first message is to be broadcast in a cell, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications;

means for generating a second message that is a System Information Type 3 message, the second message comprises an indication that the first message is to be broadcast, wherein the indication comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the indication indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message; and

means for broadcasting the second message to general packet radio service (GPRS) and non-GPRS wireless communication devices.

56. A wireless communication device for detecting a broadcast of a first message, comprising:

means for receiving a second message that is a System Information Type 3 message at one or more of a general packet radio service (GPRS) and a non-GPRS wireless communication device, wherein the System Information Type 3 message comprises a System Information Type 21 indicator when a WHERE field is not included in the System Information Type 3 message, and wherein the System Information Type 3 message indicates a System Information Type 9 message has been broadcast when the WHERE field is included in the System Information Type 3 message;

means for decoding the second message; and

means for using the second message to determine whether a first message has been broadcast, wherein the first message includes a list of authorized access classes and a subcategory of wireless communication devices targeted by barring indications.