SYSTEM ENHANCEMENTS FOR USING EXTENDED DRX

Abstract

Methods and apparatus may be used for selecting power saving mechanisms in a wireless transmit/receive unit (WTRU). For example a WTRU may support at least power saving mode (PSM) and/or extended discontinuous reception (eDRX) mode. The WTRU may send a request message including parameters associated with the supported power saving mechanisms such as an active time for PSM and a preferred DRX value for eDRX mode. The WTRU may receive an accept message including at least one selected parameter indicating the power saving mechanism for the WTRU selected by the network (NW). The WTRU may activate the selected power saving mechanism and may start a validity timer to define the duration of use of the selected power saving mechanism. In another example a WTRU configured to use eDRX may receive paging signals for system information (SI) change over a prolonged Broadcast Control Channel (BCCH) modification period.

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Technology	Declaration Information			Specification Information	Explicitly Disclosed	Patent Type
Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Number	Explicitly Disclosed	Patent Type
3G,2G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 060 Version No: Illustrative part: ---- Release: + -	Yes	Basis Patent
4G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 401 Version No: Illustrative part: ---- Release: S2 TS Number: TS 136 304 Version No: Illustrative part: ---- Release: S3 TS Number: TS 136 331 Version No: Illustrative part: ---- Release: +2 -2	Yes	Basis Patent
4G,3G,2G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 203 Version No: Illustrative part: ---- Release: S2 TS Number: TS 123 682 Version No: Illustrative part: ---- Release: +1 -1	Yes	Basis Patent
5G,4G,3G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 124 301 Version No: Illustrative part: ---- Release: S2 TS Number: TS 129 274 Version No: Illustrative part: ---- Release: +1 -1	Yes	Basis Patent
5G,4G,3G,2G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 124 008 Version No: Illustrative part: ---- Release: + -	Yes	Basis Patent
Not Available	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 203 Version No: Illustrative part: ---- Release: S2 TS Number: TS 123 401 Version No: Illustrative part: ---- Release: S3 TS Number: TS 123 682 Version No: Illustrative part: ---- Release: S4 TS Number: TS 124 008 Version No: Illustrative part: ---- Release: S5 TS Number: TS 124 301 Version No: Illustrative part: ---- Release: S6 TS Number: TS 129 274 Version No: Illustrative part: ---- Release: S7 TS Number: TS 136 304 Version No: Illustrative part: ---- Release: S8 TS Number: TS 136 331 Version No: Illustrative part: ---- Release: +7 -7	Yes	Basis Patent
5G	15/01/2019	ISLD-201812-064	INTERDIGITAL INC	S1 TS Number: TS 138 300 Version No: Illustrative part: ---- Release: + -	Yes	Basis Patent

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2G 3G 4G 5G

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US10091723B2	3G,2G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 060 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
US10091723B2	4G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 401 Version No: ---- Section No: Release : ---- S2 TS Number: TS 136 304 Version No: ---- Section No: Release : ---- S3 TS Number: TS 136 331 Version No: ---- Section No: Release : ---- +2 -2	No	Family Member
US10091723B2	4G,3G,2G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 123 203 Version No: ---- Section No: Release : ---- S2 TS Number: TS 123 682 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
US10091723B2	5G,4G,3G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 124 301 Version No: ---- Section No: Release : ---- S2 TS Number: TS 129 274 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
US10091723B2	5G,4G,3G,2G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 124 008 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
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US10091723B2	5G	15/01/2019	ISLD-201812-064	INTERDIGITAL INC	S1 TS Number: TS 138 300 Version No: ---- Section No: ---- Release : ---- + -	No	Family Member
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US2016295504A1	5G,4G,3G	21/12/2016	ISLD-201706-015	INTERDIGITAL INC	S1 TS Number: TS 124 301 Version No: ---- Section No: Release : ---- S2 TS Number: TS 129 274 Version No: ---- Section No: Release : ---- +1 -1	No	Family Member
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Publication No	Technology	Declaration Information			Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
Publication No	Technology	Declaration Date	Declaration Reference	Declaring Company	Specification Information				Explicitly Disclosed	Patent Type	Status	National Phase Entries
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Technologies

Mobility and handover

DRX/EDRX/DTX/EDTX

Product

User Equipment (UE/Terminal)

Use Cases

Wireless communication

Services

Power estimation/control / Saving

Claim

1. A wireless transmit/receive unit (WTRU) configured to select a power saving mechanism comprising:', 'a transmitter configured to send a request message, wherein the request message includes a plurality of parameters associated with plurality of power saving mechanisms supported by the WTRU;', 'a receiver configured to receive, from a mobility management entity (MME), an accept message from a including at least one selected parameter associated with at least one selected power saving mechanism, wherein the at least one selected power saving mechanism is from the plurality of power saving mechanisms supported by the WTRU; and', 'a processor configured to activate the at least one selected power saving mechanism.

2. The WTRU of claim 1, wherein the plurality of power saving mechanisms include at least power saving mode (PSM) and extended discontinuous reception (eDRX) mode.

3. The WTRU of claim 2, wherein a parameter associated with PSM is an active time and a parameter associated with eDRX mode is a preferred discontinuous reception (DRX) value.

4. The WTRU of claim 1, wherein the accept message further includes at least one validity timer value associated with the at least one selected power saving mechanism, wherein:', 'the processor is further configured to start a validity timer; and on a condition that the validity timer expires after a period equal to the at least one validity timer value, the processor is further configured to deactivate the at least one selected power saving mechanism.

5. The WTRU of claim 1, wherein the request message is a tracking area update (TAU) request message or an attach request message.

6. The WTRU of claim 1, wherein the at least one selected parameter has a different value than a corresponding parameter in the plurality of parameters associated with plurality of power saving mechanisms supported by the WTRU.

7. A wireless transmit/receive unit (WTRU) configured to use extended discontinuous reception (eDRX) mode comprising:', 'a receiver configured to receive paging signals for system information change over an extended Broadcast Control Channel (BCCH) modification period;', 'the receiver configured to receive a paging signal including a flag indicating that the received paging signal is intended for eDRX WTRUs only; and', 'the receiver configured to read updated system information in response to the received paging signal.

8. The WTRU of claim 7, wherein the extended BCCH modification period comprises at least a first BCCH modification period and a second BCCH modification period.

9. The WTRU of claim 8, wherein the receiver is further configured to receive the paging signals for system information change in the second BCCH modification period and not in the first BCCH modification period

10. The WTRU of claim 7, wherein:', 'the receiver is further configured to determine if systems changes are needed based on the received updated system information; and', 'a processor configured to make system changes based on the received updated system information

11. A method to select a power saving mechanism performed by a wireless transmit/receive unit (WTRU), the method comprising:', 'sending a request message, wherein the request message includes a plurality of parameters associated with plurality of power saving mechanisms supported by the WTRU;', 'receiving, from a mobility management entity (MME), an accept message including at least one selected parameter associated with at least one selected power saving mechanism, wherein the at least one selected power saving mechanism is from the plurality of power saving mechanisms supported by the WTRU; and', 'activating the at least one selected power saving mechanism

12. The method of claim 11, wherein the plurality of power saving mechanisms include at least power saving mode (PSM) and extended discontinuous reception (eDRX) mode

13. The method of claim 12, wherein a parameter associated with PSM is an active time and a parameter associated with eDRX mode is a preferred discontinuous reception (DRX) value

14. The method of claim 11, wherein the accept message further includes at least one validity timer value associated with the at least one selected power saving mechanism, further comprising:', 'starting a validity timer; and', 'on a condition that the validity timer expires after a period equal to the at least one validity timer value, deactivating the at least one selected power saving mechanism

15. The method of claim 11, wherein the request message is a tracking area update (TAU) request message or an attach request message

16. The method of claim 11, wherein the at least one selected parameter has a different value than a corresponding parameter in the plurality of parameters associated with plurality of power saving mechanisms supported by the WTRU

17. A method performed by a wireless transmit/receive unit (WTRU) using extended discontinuous reception (eDRX) mode, the method comprising: receiving paging signals for system information change over an extended Broadcast Control Channel (BCCH) modification period;', 'receiving a paging signal including a flag indicating that the received paging signal is intended for eDRX WTRUs only; and', 'reading updated system information in response to the received paging signal

18. The method of claim 17, wherein the extended BCCH modification period comprises at least a first BCCH modification period and a second BCCH modification period

19. The method of claim 18, further comprising:', 'receiving the paging signals for system information change in the second BCCH modification period and not in the first BCCH modification period.

20. The method of claim 17, further comprising:', 'determining if systems changes are needed based on the received updated system information; and', 'making system changes based on the received updated system information.']

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