METHODS OF PAGING PROCEDURES FOR REDUCED BANDWIDTH WTRUs

• US 20180317198A1
• Filed: 11/04/2016
• Published: 11/01/2018
• Est. Priority Date: 11/04/2015
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: Lee, Moon-il, Stern-Berkowitz, Janet A., Ahn, Jaehyun, Adjakple, Pascal M.
• Granted Patent: US 11,096,143 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 68/025 Indirect paging
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

Methods for paging for reduced band-width wireless transmit/receive units, WTRUs, in machine type communication, MTC, are provided. A WTRU determines (610) a paging narrowband, NB, for the WTRU, to use for monitoring an MTC physical downlink control channel, M-PDCCH, based on at least the most significant bits, MSBs, of a function of a WTRU-identifier, WTRU-ID. The WTRU monitors (620) for the M-PDCCH on the determined paging NB for the WTRU. The WTRU then receives (630) a downlink control information, DCI, on the monitored M-PDCCH on the determined paging NB during a paging occasion, PO. The WTRU then receives (650) a physical downlink shared channel, PDSCH, associated with the M-PDCCH. Alternatively, the WTRU monitors (420) the M-PDCCH in the M-PDCCH search space, wherein the M-PDCCH has a starting enhanced control channel element, ECCE, index for a WTRU group containing the WTR, and wherein the M-PDCCH includes (430) the DCI.

Claims

1. A method performed in a machine type communication (MTC) wireless transmit/receive unit (WTRU), the method comprising:

determining, by the WTRU, a paging narrowband (NB) for the WTRU, to use for monitoring an MTC physical downlink control channel (M-PDCCH), based on at least the most significant bits (MSBs) of a function of a WTRU-identifier (WTRU-ID) and on a number of NBs for paging;

monitoring, by the WTRU, for the M-PDCCH on the determined paging NB for the WTRU;

receiving, by the WTRU, a downlink control information (DCI) on the monitored M-PDCCH on the determined paging NB during a paging occasion (PO); and

receiving, by the WTRU, a physical downlink shared channel (PDSCH) associated with the M-PDCCH.

2. The method of claim 1, wherein the WTRU determines the paging NB based on at least the 3 MSBs of a function of the WTRU-ID.

3. The method of claim 1, wherein the WTRU determines the paging NB based on at least the 4 MSBs of a function of the WTRU-ID.

4. The method of claim 1, wherein the DCI includes a cyclic redundancy check (CRC) that is scrambled with a Paging Radio Network Temporary Identifier (P-RNTI).

5. The method of claim 1, wherein the PDSCH is scheduled by the DCI.

6. The method of claim 1, wherein the DCI includes system information update related information.

7. The method of claim 1, where in the PDSCH includes system information update related information.

8. The method of claim 1, wherein the PDSCH includes a paging message.

9. The method of claim 1, wherein the WTRU-ID is a WTRU international mobile subscriber identity (IMSI).

10. The method of claim 9, wherein the function includes IMSI mod 16,384.

11. (canceled)

12. A machine type communication (MTC) wireless transmit/receive unit (WTRU), the WTRU comprising:

a processor configured to determine a paging narrowband (NB) for the WTRU, to use for monitoring an MTC physical downlink control channel (M-PDCCH), based on at least the most significant bits (MSBs) of a function of a WTRU-identifier (WTRU-ID) and on a number of NBs for paging;

a transceiver operatively coupled to the processor, the transceiver and processor configured to monitor for the M-PDCCH on the determined paging NB for the WTRU;

the transceiver and processor configured to receive a downlink control information (DCI) on the monitored M-PDCCH on the determined paging NB during a paging occasion (PO); and

the transceiver and processor configured to receive a physical downlink shared channel (PDSCH) associated with the M-PDCCH.

13. The WTRU of claim 12, wherein the WTRU determines the paging NB based on at least the 3 MSBs of a function of the WTRU-ID.

14. The WTRU of claim 12, wherein the WTRU determines the paging NB based on at least the 4 MSBs of a function of the WTRU-ID.

15. The WTRU of claim 12, wherein the DCI includes a cyclic redundancy check (CRC) that is scrambled with a Paging Radio Network Temporary Identifier (P-RNTI).

16. The WTRU of claim 12, wherein the PDSCH is scheduled by the DCI.

17. The WTRU of claim 12, wherein the DCI includes system information update related information.

18. The WTRU of claim 12, wherein the PDSCH includes system information update related information.

19. The WTRU of claim 12, wherein the PDSCH includes a paging message.

20. The WTRU of claim 12, wherein the WTRU-ID is a WTRU international mobile subscriber identity (IMSI).

21. The WTRU of claim 20, wherein the function includes IMSI mod 16,384.

22-29. -29. (canceled)