System information modification notification and detection in wireless communications

1. A method for detecting subsequent modification of a system information block (SIB), comprising:

receiving a SIB in a first modification period;

determining whether the SIB is modified in a second modification period subsequent to the first modification period based at least in part on one or more parameters obtained from the SIB;

receiving a paging message in a third modification period subsequent to the second modification period; and

determining whether the SIB is modified in a fourth modification period subsequent to the third modification period based at least in part on information obtained from the paging message.

2. The method of claim 1 , further comprising

receiving a modified SIB in the second modification period when the one or more parameters indicate the SIB is modified in the second modification period.

3. The method of claim 2 , further comprising receiving the modified SIB in the second modification period; and utilizing at least one parameter in the modified SIB.

4. The method of claim 2 , further comprising

determining a common channel configuration using parameters of the modified SIB; and

communicating based on the common channel configuration.

5. The method of claim 1 , wherein the receiving the SIB and the determining whether the SIB is modified in the second modification period are performed by a mobile device upon entering a cell in an idle mode.

6. The method of claim 1 , wherein the one or more parameters comprise a flag indicating whether the SIB is modified in the second modification period.

7. The method of claim 1 , wherein the one or more parameters comprise a numeral identifying the second modification period with respect to the first modification period.

8. A wireless communications apparatus, comprising:

at least one processor configured to:

receive a system information block (SIB) in a first modification period;

determine whether the SIB is modified in a second modification period subsequent to the first modification period based at least in part on one or more parameters obtained from the SIB;

receive a paging message in a third modification period subsequent to the second modification period; and

determine whether the SIB is modified in a fourth modification period subsequent to the third modification period based at least in part on information obtained from the paging message; and

a memory coupled to the at least one processor.

9. The apparatus of claim 8 , wherein the at least one processor is configured to:

receive the SIB and determine whether the SIB is modified in the second modification period in response to a mobile device in an idle mode entering a cell.

10. The apparatus of claim 8 , wherein the at least one processor is configured to:

receive a modified SIB in the second modification period when the one or more parameters indicate the SIB is modified in the second modification period.

11. The apparatus of claim 8 , wherein the one or more parameters comprise a flag indicating whether the SIB is modified in the second modification period.

12. A wireless communications apparatus, comprising:

means for receiving a system information block (SIB) in a first modification period;

means for determining whether the SIB is modified in a second modification period subsequent to the first modification period based at least in part on one or more parameters obtained from the SIB;

means for receiving a paging message in a third modification period subsequent to the second modification period; and

means for determining whether the SIB is modified in a fourth modification period subsequent to the third modification period based at least in part on information obtained from the paging message.

13. The apparatus of claim 12 , further comprising:

means for receiving the SIB and determining whether the SIB is modified in the second modification period in response to a mobile device in an idle mode entering a cell.

14. The apparatus of claim 12 , further comprising:

means for receiving a modified SIB in the second modification period when the one or more parameters indicate the SIB is modified in the second modification period.

15. The apparatus of claim 12 , wherein the one or more parameters comprise a flag indicating whether the SIB is modified in the second modification period.

16. A computer program product, comprising:

a non-transitory computer-readable medium comprising:

code for causing at least one computer to receive a system information block (SIB) in a first modification period;

code for causing the at least one computer to determine whether the SIB is modified in a second modification period subsequent to the first modification period based at least in part on one or more parameters obtained from the SIB;

code for causing the at least one computer to receive a paging message in a third modification period subsequent to the second modification period; and

code for causing the at least one computer to determine that the SIB is modified in a fourth modification period subsequent to the third modification period based at least in part on information obtained from the paging message.

17. The computer program product of claim 16 , the non-transitory computer-readable medium further comprising:

code for causing the at least one computer to receive the SIB and determine whether the SIB is modified in the second modification period in response to a mobile device in an idle mode entering a cell.

18. The computer program product of claim 16 , the non-transitory computer-readable medium further comprising:

code for causing the at least one computer to receive a modified SIB in the second modification period when the one or more parameters indicate the SIB is modified in the second modification period.

19. The computer program product of claim 16 , wherein the one or more parameters comprise a flag indicating whether the SIB is modified in the second modification period.

20. An apparatus, comprising:

a system information block (SIB) reader that receives a SIB in a first modification period;

a SIB modification analyzer that determines whether the SIB is modified in a second modification period subsequent to the modification period based at least in part on one or more parameters obtained from the SIB;

a paging channel reader that receives a paging message in a third modification period subsequent to the second modification period, wherein the SIB modification analyzer determines whether the SIB is modified in a fourth modification period subsequent to the third modification period based at least in part on information obtained from the paging message; and

a SIB modification employer that configures the SIB reader to receive the SIB in the second modification period when the one or more parameters indicate the SIB is modified in the second modification period.

21. The apparatus of claim 20 , further comprising a modification period boundary detector that determines a beginning of the second modification period.

22. The apparatus of claim 21 , wherein the SIB modification employer configures the SIB reader near the beginning of the second modification period.

23. The apparatus of claim 20 , wherein the SIB reader receives the SIB in the second modification period.

24. The apparatus of claim 23 , wherein the apparatus communicates over a common channel based at least in part on at least one parameter of the SIB received in the second modification period.

25. The apparatus of claim 20 , wherein the apparatus communicates with an access point in an idle mode.

26. The apparatus of claim 20 , wherein the one or more parameters include a flag that indicates whether the SIB is modified in the second modification period.

27. A method for notifying modification of a system information block (SIB) in a subsequent modification period, comprising:

generating a SIB for transmission in a first modification period and comprising one or more parameters related to modification of the SIB;

determining whether the SIB is modified in a second modification period subsequent to the first modification period;

setting the one or more parameters in the SIB based on whether the SIB is modified in the second modification period;

transmitting the SIB in the first modification period;

generating a paging message for transmission in a third modification period subsequent to the second modification period and comprising information indicative of whether the SIB is modified in a fourth modification period subsequent to the third modification period; and

transmitting the paging message in the third modification period.

28. The method of claim 27 , further comprising

transmitting the SIB over a wireless communication network.

29. The method of claim 27 , further comprising

modifying the SIB when the SIB is determined to be modified in the second modification period; and

transmitting the modified SIB in the second modification period.

30. The method of claim 27 , wherein the one or more parameters include a flag indicating whether the SIB is modified in the second modification period.

31. The method of claim 27 , wherein the one or more parameters include an indication of the second modification period in which the SIB is modified.

32. A wireless communications apparatus, comprising:

at least one processor configured to:

create a system information block (SIB) for transmission in a first modification period and comprising one or more parameters related to modification of the SIB;

determine whether the SIB is modified in a second modification period subsequent to the first modification period;

set the one or more parameters in the SIB based on whether the SIB is modified in the second modification period;

send the SIB in the first modification period;

generate a paging message for transmission in a third modification period subsequent to the second modification period and comprising information indicative of whether the SIB is modified in a fourth modification period subsequent to the third modification period; and

send the paging message in the third modification period; and

a memory coupled to the at least one processor.

33. The apparatus of claim 32 , wherein the at least one processor is configured to:

modify the SIB when the SIB is determined to be modified in the second modification period; and

transmit the modified SIB in the second modification period.

34. The apparatus of claim 32 , wherein the one or more parameters include a flag indicating whether the SIB is modified in the second modification period.

35. A wireless communications apparatus, comprising:

means for creating a system information block (SIB) for transmission in a first modification period and comprising one or more parameters related to modification of the SIB;

means for determining whether the SIB is modified in a second modification period subsequent to the first modification period;

means for setting the one or more parameters in the SIB based on whether the SIB is modified in the second modification period;

means for transmitting the SIB in the first modification period;

means for generating a paging message for transmission in a third modification period subsequent to the second modification period and comprising information indicative of whether the SIB is modified in a fourth modification period subsequent to the third modification period; and

means for transmitting the paging message in the third modification period.

36. The apparatus of claim 35 , further comprising:

means for modifying the SIB when the SIB is determined to be modified in the second modification period; and

means for transmitting the modified SIB in the second modification period.

37. The apparatus of claim 35 , wherein the one or more parameters include a flag indicating whether the SIB is modified in the second modification period.

38. A computer program product, comprising:

a non-transitory computer-readable medium comprising:

code for causing at least one computer to generate a system information block (SIB) for transmission in a first modification period and comprising one or more parameters related to modification of the SIB;

code for causing the at least one computer to determine whether the SIB is modified in a second modification period subsequent to the first modification period;

code for causing the at least one computer to set the one or more parameters in the SIB based on whether the SIB is modified in the second modification period;

code for causing the at least one computer to send the SIB in the first modification period;

code for causing the at least one computer to generate a paging message for transmission in a third modification period subsequent to the second modification period and comprising information indicative of whether the SIB is modified in a fourth modification period subsequent to the third modification period; and

code for causing the at least one computer to send the paging message in the third modification period.

39. The computer program product of claim 38 , the non-transitory computer-readable medium further comprising:

code for causing the at least one computer to modify the SIB when the SIB is determined to be modified in the second modification period; and

code for causing the at least one computer to send the modified SIB in the second modification period.

40. The computer program product of claim 38 , wherein the one or more parameters include a flag indicating whether the SIB is modified in the second modification period.

41. An apparatus, comprising:

a system information block (SIB) generator that creates a SIB for transmission in a first modification period and comprising one or more parameters related to modification of the SIB;

a SIB modification specifier that determines whether the SIB is modified in a second modification period subsequent to the first modification period;

a SIB modification instantiator that sets the one or more parameters in the SIB based on whether the SIB is modified in the second modification period; and

a paging generator that generates a paging message for transmission in a third modification period subsequent to the second modification period and sends the paging message in the third modification period, the paging message comprising information indicative of whether the SIB is modified in a fourth modification period subsequent to the third modification period.

42. The apparatus of claim 41 , wherein the SIB generator creates and transmits the modified SIB in the second modification period.

43. The apparatus of claim 41 , wherein the is one or more parameters comprise a flag indicating whether the SIB is modified in the second modification period.

44. The apparatus of claim 41 , wherein the is one or more parameters comprise an indication of the second modification period in which the SIB is modified.