Method for downlink reception in unlicensed band and user equipment using the same
An aspect of the disclosure includes a method for downlink reception in unlicensed band used by a UE, including: after a data burst transmitted in a unlicensed band, stopping monitoring a downlink channel in response to ending of the data burst; and in response to receiving a reference signal or in response to expiration of a time period, starting monitoring the downlink channel, wherein the data burst is transmitted via a first bandwidth part (BWP) and initiated by a base station.
1. A method for downlink reception in unlicensed band used by a user equipment (UE), the method comprising:
after a data burst transmitted in a unlicensed serving cell, monitoring a first DL signal and stop monitoring a second DL signal according to a DCI indicating the length or the end of the data burst; and
in response to receiving the first DL signal, starting monitoring the second DL signal and stopping monitoring the first DL signal,
wherein the data burst is transmitted via a first bandwidth part (BWP) of a plurality BWP and each of the plurality BWP is configured with a BWP-ID, wherein each of the plurality BWP comprises at least one PRB.
2. The method according to claim 1 , wherein the second DL signal comprises a DCI.
3. The method according to claim 1 , wherein the method further comprises:
setting a timer to run in response to receiving the second DL signal.
4. The method according to claim 3 , wherein the length of the timer comprises a fixed value or a configured value configured by a base station, and the configured value is UE-specific or BWP-specific.
5. The method according to claim 3 , wherein the method further comprises:
before the timer is expired, monitoring the second DL signal; and
in response to the timer is expired, monitoring the first DL signal.
6. The method according to claim 5 , wherein the method further comprises:
in response to the timer is expired, performing a BWP switching procedure.
7. The method according to claim 3 , wherein the method further comprises:
before the timer is expired, starting or restarting the timer in response to receiving the second DL signal.
8. The method according to claim 1 , wherein the method further comprises:
starting monitoring the second DL signal after a time period.
9. The method according to claim 8 , wherein the time period is larger than or equal to zero.
10. The method according to claim 1 , wherein the data burst is initiated by a BS, and the BS applies a channel access procedure before transmitting the data burst.
11. The method according to claim 10 , wherein the data burst comprises at least a DL transmission burst and/or at least a UL transmission burst.
12. The method according to claim 11 , wherein the DL transmission burst is defined as a set of transmissions from the BS without any gaps greater than a time duration.
13. The method according to claim 11 , wherein the UL transmission burst is defined as a set of transmissions from the UE without any gaps greater than a time duration.
14. The method according to claim 1 , wherein the DL/UL resource of the data burst is indicated by a DCI.
15. A user equipment comprising:
a transceiver; and
a processor connected to the transceiver and configured at least to:
after a data burst transmitted in a unlicensed serving cell, monitor a first DL signal and stop monitoring a second DL signal according to a DCI indicating the length or the end of the data burst; and
in response to receiving the first DL signal, start monitoring the second DL signal and stop monitoring the first DL signal,
wherein the data burst is transmitted via a first bandwidth part (BWP) of a plurality BWP and each of the plurality BWP is configured with a BWP-ID, wherein each of the plurality BWP comprises at least one PRB.
16. The user equipment according to claim 15 , wherein the second DL signal comprises a DCI.
17. The user equipment according to claim 15 , wherein the processor is configured to:
set a timer to run in response to receiving the second DL signal.
18. The user equipment according to claim 17 , wherein the length of the timer comprises a fixed value or a configured value configured by a base station, and the configured value is UE-specific or BWP-specific.
19. The user equipment according to claim 18 , wherein the processor is configured to:
before the timer is expired, monitor the second DL signal; and
in response to the timer is expired, monitor the first DL signal.
20. The user equipment according to claim 19 , wherein the processor is configured to:
in response to the timer is expired, performing a BWP switching procedure.
21. The user equipment according to claim 17 , wherein
before the timer is expired, start or restart the timer in response to receiving the second DL signal.
22. The user equipment according to claim 15 , wherein the processor is configured to:
start monitoring the second DL signal after a time period.
23. The user equipment according to claim 22 , wherein the time period is more than zero.
24. The user equipment according to claim 15 , wherein the data burst is initiated by a BS, and the BS applies a channel access procedure before transmitting the data burst.
25. The user equipment according to claim 24 , wherein the data burst comprises at least a DL transmission burst and/or at least a UL transmission burst.
26. The user equipment according to claim 25 , wherein the DL transmission burst is defined as a set of transmissions from the BS without any gaps greater than a time duration.
27. The user equipment according to claim 25 , wherein the UL transmission burst is defined as a set of transmissions from the UE without any gaps greater than a time duration.
28. The user equipment according to claim 15 , wherein the DL/UL resource of the data burst is indicated by a DCI.