Wake-up signal sub-grouping for REL-16 EMTC and NB-IOT
Systems and methods are described for wake-up signaling of user equipment (UE). The systems and methods can include at least generating, by the BS, a wake up signal (WUS), wherein the WUS includes a length-131 Zadoff-Chu (ZC) sequence and a Gold sequence for radio equipment-level (RE-level) scrambling, and transmitting, by the BS, the WUS to a user equipment (UE) in a paging group associated with the WUS.
1. A method of operating a base station (BS) comprising:
generating, by the BS, a user equipment (UE)-group wake up signal (WUS), wherein the UE-group WUS includes a length-131 Zadoff-Chu (ZC) sequence and a Gold sequence for radio equipment-level (RE-level) scrambling, wherein the Gold sequence includes a UE group identification (ID), the UE group ID is UE ID mod N G , where N G is a number of UE groups for a plurality of UEs; and
transmitting, by the BS, the UE-group WUS to a UE of the plurality of UEs, wherein the UE is associated with the UE group ID.
2. The method of claim 1 , further comprising generating, by the BS, the UE-group WUS as a 1-physical resource block (PRB) signal.
3. The method of claim 1 , further comprising:
receiving, from the UE, an indication indicating that the UE supports the UE-group WUS; and
determining, by the BS, N G , wherein N G is a positive number.
4. The method of claim 1 , further comprising:
generating, by the BS, the UE-group WUS to occupy 11 symbols at an end of a subframe; and
repeating, by the BS, over a number of repetitions the UE-group WUS, wherein the number of repetitions are configured via a scaling factor between a maximum UE-group WUS duration and a maximum repetition of a machine-type communications physical downlink control channel candidate (MPDCCH) for paging.
5. The method of claim 1 , further comprising generating, by the BS, a UE-group WUS sequence w(m) in a subframe x, wherein x=0, 1, . . . , M−1, and wherein M is an actual duration of the UE-group WUS and w(m) is defined by
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6. The method of claim 5 , wherein M is a transmitted number of machine-type communications WUS (MWUS) subframes or narrowband WUS subframes (NWUS), and wherein 1≤M≤M Mwus max , wherein M MWUS max is a maximum number of MWUS subframes or NWUS subframes.
7. The method of claim 1 , wherein the UE-group WUS is configured by a higher layer signaling.
8. A non-transitory computer readable medium having instructions stored thereon that, when executed by a base station (BS), cause the BS to perform operations comprising:
generating a user equipment (UE)-group wake up signal (WUS), wherein the UE-group WUS includes a length-131 Zadoff-Chu (ZC) sequence and a Gold sequence for radio equipment-level (RE-level) scrambling, wherein the Gold sequence includes a UE group identification (ID), the UE group ID is UE ID mod N G , where N G is a number of UE groups for a plurality of UEs; and
transmitting the UE-group WUS to a UE of the plurality of UEs, wherein the UE is associated with the UE group ID.
9. The non-transitory computer readable medium of claim 8 , the operations further comprising generating the UE-group WUS as a 1-physical resource block (PRB) signal.
10. The non-transitory computer readable medium of claim 8 , the operations further comprising:
receiving, from the UE, an indication indicating that the UE supports the UE-group WUS; and
determining N G , wherein N G is a positive number.
11. The non-transitory computer readable medium of claim 8 , the operations further comprising:
generating the UE-group WUS to occupy 11 symbols at an end of a subframe; and
repeating over a number of repetitions the UE-group WUS, wherein the number of repetitions are configured via a scaling factor between a maximum UE-group WUS duration and a maximum repetition of a machine-type communications physical downlink control channel candidate (MPDCCH) for paging.
12. The non-transitory computer readable medium of claim 8 , the operations further comprising generating a UE-group WUS sequence w(m) in a subframe x, wherein x=0, 1, . . . , M−1, and wherein M is an actual duration of the UE-group WUS and w(m) is defined by
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13. The non-transitory computer readable medium of claim 12 , wherein M is a transmitted number of machine-type communications WUS (MWUS) subframes or narrowband WUS subframes (NWUS), and wherein 1≤ M≤ M MWUS max , wherein M MWUS max is a maximum number of MWUS subframes or NWUS subframes.
14. The non-transitory computer readable medium of claim 8 , wherein the UE-group WUS is configured by a higher layer signaling.
15. A base station (BS) comprising:
processor circuitry configured to:
generate a user equipment (UE)-group wake up signal (WUS), wherein the UE-group WUS includes a length-131 Zadoff-Chu (ZC) sequence and a Gold sequence for radio equipment-level (RE-level) scrambling, wherein the Gold sequence includes a UE group identification (ID), the UE group ID is UE ID mod N G , where N G is a number of UE groups for a plurality of UEs; and
radio front end circuitry, coupled to the processor circuitry, configured to transmit the UE-group WUS to a UE of the plurality of UEs, wherein the UE is associated with the UE group ID.
16. The BS of claim 15 , wherein the processor circuitry is further configured to generate the UE-group WUS as a 1-physical resource block (PRB) signal.
17. The BS of claim 15 , wherein the processor circuitry is further configured to:
receive, from the UE, an indication indicating that the UE supports the UE-group WUS; and
determine N G , wherein N G is a positive number.
18. The BS of claim 15 , wherein the processor circuitry is further configured to: generate the UE-group WUS to occupy 11 symbols at an end of a subframe; and
repeat over a number of repetitions the UE-group WUS, wherein the number of repetitions are configured via a scaling factor between a maximum UE-group WUS duration and a maximum repetition of a machine-type communications physical downlink control channel candidate (MPDCCH) for paging.
19. The BS of claim 15 , wherein the processor circuitry is further configured to generate a UE-group WUS sequence w(m) in a subframe x, wherein x=0, 1, . . . , M−1, and wherein M is an actual duration of the UE-group WUS and w(m) is defined by
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20. The BS of claim 19 , wherein M is a transmitted number of machine-type communications WUS (MWUS) subframes or narrowband WUS subframes (NWUS), and wherein 1≤M≤ M MWUSmax , wherein M MWUSmax is a maximum number of MWUS subframes or NWUS subframes.