Techniques for reading system information in wireless communications

Patent metadata

Field	Value
Publication number	US-9538455-B2
Application number	US-201414475177-A
Country	US
Kind code	B2
Filing date	Sep 2, 2014
Priority date	Feb 4, 2014
Publication date	Jan 3, 2017
Grant date	Jan 3, 2017

Abstract

Described herein are various aspects related to determining whether to read system information of a network entity. A user equipment (UE) can receive system information transmitted by a network entity. The UE can analyze one or more parameters of the system information to determine whether system information for the network entity has changed when a value tag broadcasted in the system information is equivalent to a stored value tag for the network entity; thus the UE can utilize more than just the value tag, such as system information size, system information scheduling, a value tag in master information, and/or the like, at least in instance where the value tag may be the same in different transmissions of the system information. The UE can process the system information for the network entity based at least in part on determining that the system information for the network entity has changed.

First claim

What is claimed is:

1. A method of determining whether to read system information of a network entity, comprising:
receiving system information transmitted by a network entity;
analyzing one or more parameters of the system information to determine whether the system information for the network entity has changed when a value tag broadcasted in the system information is equivalent to a stored value tag for the network entity; and
processing the system information for the network entity based at least in part on determining that the system information for the network entity has changed,
wherein the one or more parameters comprise a system information size, and wherein analyzing the one or more parameters comprises determining whether the system information has changed based on comparing the system information size to a stored system information size, from previously received system information of the network entity, to determine whether the system information size is different than the stored system information size.

2. The method of claim 1 , wherein the system information size corresponds to a number of system information block (SIB) segments specified in a master information block (MIB) or a different SIB in the system information, and the stored system information size corresponds to a stored number of SIB segments in the previously received system information.

3. The method of claim 1 , wherein the one or more parameters additionally comprise a system information schedule parameter broadcasted in the system information, and wherein analyzing the one or more parameters further comprises determining whether the system information has changed based on comparing the system information schedule parameter to a stored system information schedule parameter from the previously received system information of the network entity.

4. The method of claim 3 , wherein the system information schedule parameter broadcasted in the system information corresponds to a position or offset of the system information, and the stored system information size corresponds to a stored position or offset of the previously received system information.

5. The method of claim 1 , wherein the one or more parameters additionally comprise a value specified in a master information block (MIB) broadcasted in the system information.

6. The method of claim 5 , wherein the analyzing the one or more parameters further comprises determining whether the system information has changed based on comparing a MIB value tag broadcasted in the MIB to a stored MIB value tag in a stored MIB from the previously received system information of the network entity.

7. An apparatus for determining whether to read system information of a network entity, comprising:
a memory;
at least one processor communicatively coupled to the memory and configured to:
receive system information transmitted by a network entity;
analyze one or more parameters of the system information to determine whether the system information for the network entity has changed when a value tag broadcasted in the system information is equivalent to a stored value tag for the network entity; and
process the system information for the network entity based at least in part on determining that the system information for the network entity has changed;
wherein the one or more parameters comprise a system information size, and wherein the at least one processor is configured to analyze the one or more parameters at least in part by determining whether the system information has changed based on comparing the system information size to a stored system information size, from previously received system information of the network entity, to determine whether the system information size is different than the stored system information size.

8. The apparatus of claim 7 , wherein the system information size corresponds to a number of system information block (SIB) segments specified in a master information block (MIB) or a different SIB in the system information, and the stored system information size corresponds to a stored number of SIB segments in the previously received system information.

9. The apparatus of claim 7 , wherein the one or more parameters additionally comprise a system information schedule parameter broadcasted in the system information, and wherein the at least one processor is configured to determine whether the system information has changed based on comparing the system information schedule parameter to a stored system information schedule parameter from the previously received system information of the network entity.

10. The apparatus of claim 9 , wherein the system information schedule parameter broadcasted in the system information corresponds to a position or offset of the system information, and the stored system information size corresponds to a stored position or offset of the previously received system information.

11. The apparatus of claim 7 , wherein the one or more parameters additionally comprise a value specified in a master information block (MIB) broadcasted in the system information.

12. The apparatus of claim 11 , wherein the at least one processor is configured to determine whether the system information has changed based on comparing a MIB value tag broadcasted in the MIB to a stored MIB value tag in a stored MIB from the previously received system information of the network entity.

13. An apparatus for determining whether to read system information of a network entity, comprising:
means for receiving system information transmitted by a network entity;
means for analyzing one or more parameters of the system information to determine whether the system information for the network entity has changed when a value tag broadcasted in the system information is equivalent to a stored value tag for the network entity; and
means for processing the system information for the network entity based at least in part on determining that the system information for the network entity has changed,
wherein the one or more parameters comprise a system information size, and wherein the means for analyzing analyzes the one or more parameters at least in part by determining whether the system information has changed based on comparing the system information size to a stored system information size, from previously received system information of the network entity, to determine whether the system information size is different than the stored system information size.

14. The apparatus of claim 13 , wherein the system information size corresponds to a number of system information block (SIB) segments specified in a master information block (MIB) or a different SIB in the system information, and the stored system information size corresponds to a stored number of SIB segments in the previously received system information.

15. The apparatus of claim 13 , wherein the one or more parameters additionally comprise a system information schedule parameter broadcasted in the system information, and wherein the means for analyzing analyzes the one or more parameters at least in part by determining whether the system information has changed based on comparing the system information schedule parameter to a stored system information schedule parameter from the previously received system information of the network entity.

16. The apparatus of claim 15 , wherein the system information schedule parameter broadcasted in the system information corresponds to a position or offset of the system information, and the stored system information size corresponds to a stored position or offset of the previou

Assignees

• Qualcomm Inc

Inventors

• Shi Yongsheng
• Sheik Ansah Ahmed
• Chakravarthy Chetan
• Hsu Liangchi
• Kumar Arvindhan

Classifications

• H04W52/0216

  using a pre-established activity schedule, e.g. traffic indication frame · CPC title

• H04W48/12

  using downlink control channel · CPC title

• H04W28/18 Primary

  Negotiating wireless communication parameters · CPC title

• H04W48/16 Primary

  Discovering, processing access restriction or access information · CPC title

• H04W48/10 Primary

  using broadcasted information · CPC title