Enhanced node B and methods for providing system information updates to user equipment with extended paging cycles

Patent metadata

Field	Value
Publication number	US-9326207-B2
Application number	US-201314140827-A
Country	US
Kind code	B2
Filing date	Dec 26, 2013
Priority date	Jun 7, 2013
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

Embodiments of an enhanced Node B (eNB) and method to provide system information (SI) updates to user equipment (UE) in sleep or idle mode with an extending paging cycle are generally described herein. In some embodiments, a paging message configured to include an optional field to indicate whether there has been a system information (SI) update since a last paging occasion for a UE in sleep or idle mode with an extending paging cycle. System information updates are transmitted by the eNB during a system information modification period that is shorter than a period the extending paging cycle. The optional field may indicate whether or not the UE is to acquire the latest SI update during the current paging occasion.

First claim

What is claimed is:

1. A method performed by an enhanced Node B (eNB) to provide system information (SI) updates to user equipment (UE) in sleep or idle mode with an extending paging cycle, the method comprising:
determining whether an upcoming paging occasion includes a UE in sleep or idle with an extending paging cycle;
determining whether there has been a SI update since a last paging occasion for the UE;
in response to determining that there has been a SI update since the last paging occasion for the UE, transmitting a paging message, including an optional field to indicate that there has been a SI update since the last paging occasion for the UE, independent of whether there is downlink data available for the UE,
wherein system information updates are transmitted by the eNB during a system information modification period that is shorter than a period of the extending paging cycle.

2. The method of claim 1 wherein the optional field is a system information update modification for extended paging cycle (SIMExtPC) field.

3. The method of claim 2 wherein when a SI update change notification has been issued during a sleep period of the UE, the method further comprises configuring the SIMExtPC field of the paging message to indicate to the UE to acquire a latest SI update during a current paging occasion.

4. The method of claim 3 wherein when a SI update change notification has not been issued during the sleep period of the UE in sleep or idle mode with an extending paging cycle, the method further comprises configuring the SIMExtPC field of the paging message to indicate to the UE that a latest SI update does not need to be acquired during the current paging occasion.

5. The method of claim 1 wherein UEs that are in an active or connected mode and UEs that are sleep or idle mode with a standard paging cycle are configured to refrain from responding to the paging message.

6. The method of claim 1 further comprising:
in response to determining that there has been a SI update since the last paging occasion for the UE, repeating transmission of the paging message after the paging occasion for a predetermined number of frames.

7. The method of claim 1 wherein:
the paging message is transmitted independent of whether there is Commercial Mobile Alerting System (CMAS), Earthquake and Tsunami Warning System (ETWS) or SI update information.

8. A method performed by an enhanced Node B (eNB) to provide system information (SI) updates to user equipment (UE) in sleep or idle mode with an extending paging cycle, the method comprising:
transmitting a paging message that includes a system information update modification for extended paging cycle (SIMExtPC) field to indicate whether there has been a SI update since a last paging occasion for a UE in sleep or idle mode with an extending paging cycle,
wherein system information updates are transmitted by the eNB during a system information modification period that is shorter than a period of the extending paging cycle,
wherein:
when a SI update change notification has been issued during a sleep period of the UE, the method further comprises configuring the SIMExtPC field of the paging message to indicate to the UE to acquire a latest SI update during a current paging occasion, and
when a SI update change notification has not been issued during the sleep period of the UE in sleep or idle mode with an extending paging cycle, the method further comprises configuring the SIMExtPC field of the paging message to indicate to the UE that a latest SI update does not need to be acquired during the current paging occasion,

determining when an upcoming paging occasion includes a UE in sleep or idle with an extending paging cycle, and
when the upcoming paging occasion does include a UE in sleep or idle mode with an extending paging cycle, the method further includes:
determining whether a SI update change notification has been issued during the sleep period of the UE; and
configuring the SIMExtPC field of the paging message for transmission in the upcoming paging occasion to indicate whether the UE is to acquire the latest SI update during the current paging occasion.

9. The method of claim 8 wherein the paging message with the SIMExtPC field is transmitted to a UE in sleep or idle mode with an extending paging cycle whether there is downlink data available for the UE.

10. The method of claim 9 further comprising repeating transmission of the paging message after the paging occasion for a predetermined number of frames when the SIMExtPC field of the paging message is configured to indicate to the UE to acquire the latest SI update,
wherein UEs that are in sleep or idle mode with an extending paging cycle are arranged to attempt to receive repeated transmissions of paging messages configured with the SIMExtPC field to help assure that a latest SI update is acquired.

11. An enhanced node B (eNB) arranged to provide system information (SI) updates to user equipment (UE) in sleep or idle mode with an extending paging cycle, the eNB comprising:
physical layer circuitry arranged to communicate with the UE; and
processing circuitry arranged to:
configure the physical layer circuitry to transmit a SI update during a system information modification period;
determine that the UE is in sleep or idle mode with an extending paging cycle that is longer than a period of the system information modification period;
determine that there has been a SI update since a last paging occasion for the UE; and
in response to determining that there has been a SI update since the last paging occasion for the UE, configure the physical layer circuitry to transmit a paging message, including an optional field to indicate whether there has been a SI update since a last paging occasion for the UE, independent of whether there is downlink data available for the UE.

12. The eNB of claim 11 wherein the optional field is a system information update modification for extended paging cycle (SIMExtPC) field.

13. The eNB of claim 12 wherein when a SI update change notification has been issued during a sleep period of the UE, the eNB is to configure the SIMExtPC field of the paging message to indicate to the UE to acquire a latest SI update during a current paging occasion.

14. The eNB of claim 13 wherein when a SI update change notification has not been issued during the sleep period of the UE in sleep or idle mode with an extending paging cycle, the eNB is arranged to configure the SIMExtPC field of the paging message to indicate to the UE that a latest SI update does not need to be acquired during the current paging occasion.

15. An enhanced node B (eNB) arranged to provide system information (SI) updates to user equipment (UE) in sleep or idle mode with an extending paging cycle, the eNB comprising:
physical layer circuitry arranged to communicate with the UE; and
processing circuitry arranged to:
transmit a paging message that includes a system information update modification for extended paging cycle (SIMExtPC) field to indicate whether there has been a SI update since a last paging occasion for a UE in sleep or idle mode with an extending paging cycle,

wherein system information updates are transmitted by the eNB during a system information modification period that is shorter than a period of the extending paging cycle,
when a SI update change notification has been issued during a sleep period of the UE, the eNB is to configure the SIMExtPC field of the paging message to indicate to the UE to acquire a latest SI update during a current paging occasion,
wherein when a SI update change notifica

Assignees

• Intel Corp

Inventors

• Jha Satish Chandra
• Koc Ali
• Gupta Maruti
• Vannithamby Rath

Classifications

• H04L5/0035 Primary

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• H04W84/12

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