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1. (WO2019067179) IMPROVING SERVICE RECOVERY IN CASE OF UNKNOWN CELL RADIO NETWORK TEMPORARY IDENTIFIER (C-RNTI) ON ENB SIDE
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CLAIMS

1. A method for wireless communications by a network entity, comprising:

receiving an uplink transmission from a user equipment (UE) with a Cell Radio Network Temporary Identifier (C-RNTI);

determining the C-RNTI lacks context at the network entity; and

signaling, in response to the determination, an indication of an immediate C-RNTI release to the UE.

2. The method of claim 1, wherein the determining comprises:

determining the network entity has previously released the C-RNTI.

3. The method of claim 1, further comprising:

receiving signaling, from the UE, indicating the UE is capable of processing the indication of the immediate C-RNTI release.

4. The method of claim 1, wherein the signaling comprises:

sending a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, with a resource indicator value (RIV) set to a reserved value selected to indicate the immediate C-RNTI release to the UE.

5. The method of claim 4, wherein a possible pattern for the RIV indicating C-RNTI release comprises a first set of bits of the RIV set to all ones and a last set of bits set to all zeroes.

6. The method of claim 1, wherein the signaling comprises:

sending a narrowband physical downlink control channel (NPDCCH) with a data portion that comprises a specific pattern selected to indicate the immediate C-RNTI release to the UE.

7. The method of claim 6, wherein a possible pattern for the NPDCCH order indicating C-RNTI release alternates between ones and zeroes.

8. The method of claim 1, wherein the signaling comprises:

sending a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, to schedule a physical downlink shared channel (PDSCH) transmission; and

sending the PDSCH transmission with a media access control (MAC) control element (CE) to indicate the immediate C-RNTI release to the UE.

9. The method of claim 8, wherein the PDCCH comprises at least one of a PDCCH, a machine-type communication (MTC) physical downlink control channel (MPDCCH), and a narrowband physical downlink control channel (NPDCCH).

10. A method for wireless communications by a user equipment (UE), comprising: sending an uplink transmission to a network entity with a Cell Radio Network Temporary Identifier (C-RNTI);

receiving an indication, from the network entity, of an immediate C-RNTI release based on a determination that the C-RNTI lacks context in the network entity; and

taking one or more actions in response to the indication.

11. The method of claim 10, wherein the one or more actions comprise:

leaving a radio resource control (RRC) connected state; and

subsequently establishing a new RRC connection to send uplink data.

12. The method of claim 10, further comprising:

providing signaling, to the network entity, that the UE is capable of processing the indication of the immediate C-RNTI release.

13. The method of claim 10, wherein receiving the indication comprises:

receiving a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, with a resource indicator value (RIV) set to a reserved value selected to indicate the immediate C-RNTI release to the UE.

14. The method of claim 13, wherein a possible pattern for the RIV indicating C-RNTI release comprises a first set of bits of the RIV set to all ones and a last set of bits set to all zeroes.

15. The method of claim 10, wherein receiving the indication comprises:

receiving a narrowband physical downlink control channel (NPDCCH) with a data portion that comprises a specific pattern selected to indicate the immediate C-RNTI release to the UE.

16. The method of claim 15, wherein a possible pattern for the NPDCCH order indicating C-RNTI release alternates between ones and zeroes.

17. The method of claim 10, wherein receiving the indication comprises:

receiving a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, to schedule a physical downlink shared channel (PDSCH) transmission; and

receiving the PDSCH transmission with a media access control (MAC) control element (CE) to indicate the immediate C-RNTI release to the UE.

18. The method of claim 17, wherein the PDCCH comprises at least one of a PDCCH, a machine-type communication (MTC) physical downlink control channel (MPDCCH), and a narrowband physical downlink control channel (NPDCCH).

19. An apparatus for wireless communications by a network entity, comprising: means for receiving an uplink transmission from a user equipment (UE) with a Cell Radio Network Temporary Identifier (C-RNTI);

means for determining the C-RNTI lacks context at the network entity; and means for signaling, in response to the determination, an indication of an immediate C-RNTI release to the UE.

20. The apparatus of claim 19, wherein the means for determining comprises:

means for determining the network entity has previously released the C-RNTI.

21. The apparatus of claim 19, further comprising:

means for receiving signaling, from the UE, indicating the UE is capable of processing the indication of the immediate C-RNTI release.

22. The apparatus of claim 19, wherein the means for signaling comprises:

means for sending a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, with a resource indicator value (RIV) set to a reserved value selected to indicate the immediate C-RNTI release to the UE,

wherein a possible pattern for the RIV indicating C-RNTI release comprises a first set of bits of the RIV set to all ones and a last set of bits set to all zeroes.

23. The apparatus of claim 19, wherein the means for signaling comprises:

means for sending a narrowband physical downlink control channel (NPDCCH) with a data portion that comprises a specific pattern selected to indicate the immediate C-RNTI release to the UE,

wherein a possible pattern for the NPDCCH order indicating C-RNTI release alternates between ones and zeroes.

24. The apparatus of claim 19, wherein the means for signaling comprises:

means for sending a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, to schedule a physical downlink shared channel (PDSCH) transmission; and

means for sending the PDSCH transmission with a media access control (MAC) control element (CE) to indicate the immediate C-RNTI release to the UE,

wherein the PDCCH comprises at least one of a PDCCH, a machine-type communication (MTC) physical downlink control channel (MPDCCH), and a narrowband physical downlink control channel (NPDCCH).

25. An apparatus for wireless communications by a user equipment (UE), comprising:

means for sending an uplink transmission to a network entity with a Cell Radio Network Temporary Identifier (C-RNTI);

means for receiving an indication, from the network entity, of an immediate C-RNTI release based on a determination that the C-RNTI lacks context in the network entity; and

means for taking one or more actions in response to the indication.

26. The apparatus of claim 25, wherein the means for taking one or more actions comprise:

means for leaving a radio resource control (RRC) connected state; and means for subsequently establishing a new RRC connection to send uplink data.

27. The apparatus of claim 25, further comprising:

means for providing signaling, to the network entity, that the UE is capable of processing the indication of the immediate C-RNTI release.

28. The apparatus of claim 25, wherein the means for receiving the indication comprises:

means for receiving a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, with a resource indicator value (RIV) set to a reserved value selected to indicate the immediate C-RNTI release to the UE,

wherein a possible pattern for the RIV indicating C-RNTI release comprises a first set of bits of the RIV set to all ones and a last set of bits set to all zeroes.

29. The apparatus of claim 25, wherein the means for receiving the indication comprises:

means for receiving a narrowband physical downlink control channel

(NPDCCH) with a data portion that comprises a specific pattern selected to indicate the immediate C-RNTI release to the UE,

wherein a possible pattern for the NPDCCH order indicating C-RNTI release alternates between ones and zeroes.

30. The apparatus of claim 25, wherein the means for receiving the indication comprises:

means for receiving a physical downlink control channel (PDCCH), encoded with the C-RNTI that lacks context in the network entity, to schedule a physical downlink shared channel (PDSCH) transmission; and

means for receiving the PDSCH transmission with a media access control (MAC) control element (CE) to indicate the immediate C-RNTI release to the UE, wherein the PDCCH comprises at least one of a PDCCH, a machine-type communication (MTC) physical downlink control channel (MPDCCH), and a narrowband physical downlink control channel (NPDCCH).