Techniques for determining whether to utilize system information between multiple bandwidth carriers

• US 9,392,601 B2
• Filed: 09/30/2013
• Issued: 07/12/2016
• Est. Priority Date: 09/30/2013
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Das, Soumya, Dural, Ozgur, Park, Edwin Chongwoo, Soliman, Samir Salib
• Primary Examiner(s): Moore, Ian N
• Assistant Examiner(s): AMBAYE, MEWALE A
• Application Number:
  US14/041,725
• Publication Number:
  US 20150092674A1
• Time in Patent Office: 1,016 Days
• Field of Search: 370/329
• US Class Current: 1/1
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 36/04 Reselecting a cell layer in multi-layered cells
• CPC Class Codes: H04W 48/12 using downlink control channel
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/1263 Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Abstract

Methods, systems, and devices are provided for system information management in a wireless communications. A user equipment (UE) may identify a first value of a value tag in a first carrier, read a system information block (SIB) on the first carrier associated with the value tag, and identify a second value of the value tag in a second carrier. The UE may compare the first value with the second value and determine whether the read SIB on the first carrier may be utilized on the second carrier. Other techniques may include identifying a first value of a value tag for a first carrier linked with a SIB transmitted over the first carrier. The techniques may include determining a second value of the value tag for a second carrier indicating whether the SIB transmitted over the first carrier may be utilized on the second carrier.

Claims

1. A method for system information in a wireless communications system, the method comprising:

identifying, at a base station, a first value of a major value tag portion and a first value of a minor value tag portion of a value tag for a first carrier, wherein the first value of the major value tag portion and the first value of the minor value tag portion of the value tag is linked with a system information block (SIB) transmitted over the first carrier;

determining, at the base station, a second value of the major value tag portion and a second value of the minor value tag portion of the value tag for a second carrier, wherein the second value of the major value tag portion of the value tag indicates with respect to the first value of the major value tag portion of the value tag whether the SIB transmitted over the first carrier is to be utilized with respect to the second carrier, wherein the minor value tag portion of the value tag is utilized to indicate a SIB change for the second carrier, wherein the second carrier has a bandwidth different from the first carrier, and wherein one or more offsets are utilized for the SIB transmitted over the second carrier with respect to the SIB transmitted over the first carrier; and

reducing a frequency of SIB scheduling based at least on utilizing the value tag comprising the major value tag portion and the minor value tag portion.

2. The method of claim 1, further comprising:

broadcasting, from the base station, the second value of the major value tag portion and the second value of the minor value tag portion of the value tag over the second carrier.

3. The method of claim 2, further comprising:

receiving, at the base station, the first value of the major value tag portion and the first value of the minor value tag portion of the value tag.

4. The method of claim 1, further comprising:

synchronizing one or more values of the value tag with respect to the first carrier and the second carrier.

5. The method of claim 1, wherein the determining the second value of the major value tag portion and the second value of the minor value tag portion of the value tag for the second carrier comprises:

receiving, by the base station, an indication from a second base station different from the base station, the indication including the second value of the major value tag portion and the second value of the minor value tag portion of the value tag for the second carrier.

6. The method of claim 1, wherein the determining the second value of the major value tag portion and the second value of the minor value tag portion of the value tag for the second carrier comprises:

receiving, by the base station, an indication from a Radio Network Controller (RNC), the indication including the second value of the major value tag portion and the second value of the minor value tag portion of the value tag for the second carrier.

7. The method of claim 4, wherein the synchronizing occurs at least at the base station, the second base station, the RNC, or a core network device.

8. The method of claim 1, wherein the first value of the major value tag portion of the value tag for the first carrier equals the second value of the major value tag portion of the value tag for the second carrier.

9. The method of claim 1, wherein the first value of the major value tag portion of the value tag for the first carrier differs from the second value of the major value tag portion of the value tag for the second carrier.

10. The method of claim 1, wherein the major value tag portion of the value tag is a differential value tag to indicate whether a change of the SIB between the first carrier and the second carrier has occurred.

11. The method of claim 1, wherein the first carrier comprises a normal bandwidth carrier and the second carrier comprises a flexible bandwidth carrier.

12. The method of claim 1, wherein the first carrier comprises a flexible bandwidth carrier and the second carrier comprises a normal bandwidth carrier.

13. The method of claim 1, wherein the first carrier comprises a first flexible bandwidth carrier and the second carrier comprises a second flexible bandwidth carrier.

14. The method of claim 1, wherein the first carrier comprises a first normal bandwidth carrier and the second carrier comprises a second normal bandwidth carrier.

15. A system for system information in a wireless communications system, the system comprising:

means for identifying a first value of a major value tag portion and a first value of a minor value tag portion of a value tag for a first carrier, wherein the first value of the major value tag portion and the first value of the minor value tag portion of the value tag is linked with a system information block (SIB) transmitted over the first carrier;

means for determining a second value of the major value tag portion and a second value of the minor value tag portion of the value tag for a second carrier, wherein the second value of the major value tag portion of the value tag indicates with respect to the first value of the major value tag portion of the value tag whether the SIB transmitted over the first carrier is to be utilized with respect to the second carrier,

wherein the minor value tag portion of the value tag is utilized to indicate a SIB change for the second carrier, wherein the second carrier has a bandwidth different from the first carrier, and wherein one or more offsets are utilized for the SIB transmitted over the second carrier with respect to the SIB transmitted over the first carrier; and

means for reducing a frequency of SIB scheduling based at least on utilizing the value tag comprising the major value tag portion and the minor value tag portion.

16. The system of claim 15, further comprising:

means for broadcasting the second value of the major value tag portion and the second value of the minor value tag portion of the value tag over the second carrier.

17. The system of claim 16, further comprising:

means for receiving the first value of the major value tag portion and the first value of the minor value tag portion of the value tag.

18. The system of claim 15, further comprising:

means for synchronizing one or more values of the value tag with respect to the first carrier and the second carrier.

19. The system of claim 15, wherein the first value of the major value tag portion of the value tag for the first carrier equals the second value of the major value tag portion of the value tag for the second carrier.

20. The system of claim 15, wherein the first value of the major value tag portion of the value tag for the first carrier differs from the second value of the major value tag portion of the value tag for the second carrier.

21. The system of claim 15, wherein the value tag is a differential value tag to indicate whether a change of the SIB between the first carrier and the second carrier has occurred.

22. A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by at least one processor to:

identify a first value of a major value tag portion and a first value of a minor value tag portion of a value tag for a first carrier, wherein the first value of the value tag is linked with a system information block (SIB) transmitted over the first carrier;

determine a second value of the major value tag portion and a second value of the minor value tag portion of the value tag for a second carrier, wherein the second value of the major value tag portion of the value tag indicates with respect to the first value of the major value tag portion of the value tag whether the SIB transmitted over the first carrier is to be utilized with respect to the second carrier, wherein the minor value tag portion of the value tag is utilized to indicate a SIB change for the second carrier, wherein the second carrier has a bandwidth different from the first carrier, and wherein one or more offsets are utilized for the SIB transmitted over the second carrier with respect to the SIB transmitted over the first carrier; and

reduce a frequency of SIB scheduling based at least on utilizing the value tag comprising the major value tag portion and the minor value tag portion.

23. The non-transitory computer-readable medium of claim 22, wherein the computer-readable code that, when executed, further causes the at least one processor to:

broadcast the second value of the major value tag portion and the second value of the minor value tag portion of the value tag over the second carrier.

24. The non-transitory computer-readable medium of claim 23, wherein the computer-readable code that, when executed, further causes the at least one processor to:

receive the first value of the major value tag portion and the first value of the minor value tag portion of the value tag.

25. The non-transitory computer-readable medium of claim 22, wherein the computer-readable code that, when executed, further causes the at least one processor to:

synchronize one or more values of the value tag with respect to the first carrier and the second carrier.

26. A wireless communications device for system information in a wireless communications system, the device comprising:

at least one processor;

memory in electronic communication with the at least one processor; and

instructions being stored in the memory and operable, when executed by the at least one processor, to cause the device to;

identify a first value of a major value tag portion and a first value of a minor value tag portion of a value tag for a first carrier, wherein the first value of the major value tag portion and the first value of the minor value tag portion of the value tag is linked with a system information block (SIB) transmitted over the first carrier;

determine a second value of the major value tag portion and a second value of the minor value tag portion of the value tag for a second carrier, wherein the second value of the major value tag portion of the value tag indicates with respect to the first value of the major value tag portion of the value tag whether the SIB transmitted over the first carrier is to be utilized with respect to the second carrier, wherein the minor value tag portion of the value tag is utilized to indicate a SIB change for the second carrier, wherein the second carrier has a bandwidth different from the first carrier, and wherein one or more offsets are utilized for the SIB transmitted over the second carrier with respect to the SIB transmitted over the first carrier; and

reduce a frequency of SIB scheduling based at least on utilizing the value tag comprising the major value tag portion and the minor value tag portion.

27. The wireless communications device of claim 26, wherein the instructions are operable, when executed by the at least one processor, to cause the device to broadcast the second value of the major value tag portion and the second value of the minor value tag portion of the value tag over the second carrier.

28. The wireless communications device of claim 27, wherein the instructions are operable, when executed by the at least one processor, to cause the device to receive the first value of the major value tag portion and the first value of the minor value tag portion of the value tag.

29. The wireless communications device of claim 26, wherein the instructions are operable, when executed by the at least one processor, to cause the device to synchronize one or more values of the value tag with respect to the first carrier and the second carrier.