User equipment and performing method by the same

Abstract

A user equipment and method for determining a quasi-co-located (QCL) source reference signal (RS) to receive a target signal or channel are disclosed. The method includes: receiving antenna indicator information from a base station, the antenna indicator information indicating one or more first antenna configurations and one or more second antenna configurations; identifying a first symbol set to which the one or more first antenna configurations are applied and a second symbol set to which the one or more second antenna configurations are applied; and using a version of the quasi-co-located source reference signal at a time instance based on whether a time instance occurs in the first symbol set or the second symbol set to receive the target signal or channel.

Claims

1. A method, implemented by a user equipment (UE), for determining a quasi-co-location (QCL) source reference signal (RS) to receive a target signal or channel, the method comprising: Antenna indicator information is received from the base station, wherein the antenna indicator information indicates one or more first antenna configurations and one or more second antenna configurations; Identify a first symbol set to which the one or more first antenna configurations are applied and a second symbol set to which the one or more second antenna configurations are applied; and receive the target signal or channel at the time instance using a version of the quasi-co-located source reference signal based on whether a time instance occurs in the first symbol set or the second symbol set.

2. The method of claim 1, wherein the antenna indicator information implicitly indicates the time-domain position of the one or more first antenna configurations and the time-domain position of the one or more second antenna configurations based on the time-domain positions of one or more sub-band full-duplex (SBFD) symbols and one or more non-sub-band full-duplex symbols, or wherein the antenna indicator information explicitly provides the time-domain position of the one or more first antenna configurations and the time-domain position of the one or more second antenna configurations.

3. The method of claim 2, wherein the version of the quasi-co-located source reference signal includes a first valid reference signal of an instance of a reference signal in one or more first antenna configurations generated based on the antenna indicator information and a second valid reference signal of an instance of the reference signal in one or more second antenna configurations, and wherein the quasi-co-located source reference signal is a periodic quasi-co-located source reference signal or a semi-persistent quasi-co-located source reference signal.

4. The method of claim 3, wherein receiving the target signal or channel further comprises applying channel attributes similar to the first valid reference signal or the second valid reference signal to the target signal or channel based on whether the time-domain location of the target signal or channel is in one or more sub-band full-duplex symbols or one or more non-sub-band full-duplex symbols.

5. The method as described in claim 4, wherein, in the case where the scheduled physical downlink control channel (PDCCH) of the target signal or channel does not include a Transmission Configuration Indicator (TCI) field and the scheduling gap is greater than or equal to a predefined value, the user equipment identifies that the quasi-co-location channel status information (CSI) reference signal applied to the physical downlink shared channel (PDSCH) is the same as the quasi-co-location channel status information reference signal applied to the physical downlink control channel; or wherein, in the case where the scheduled physical downlink control channel of the target signal or channel does not include the Transmission Configuration Indicator field and the scheduling gap is greater than the predefined value, when the time domain position of the physical downlink shared channel is in the time domain position where the first valid reference signal is to be applied, the user equipment applies the first valid reference signal at the time domain position of the physical downlink shared channel, and when the time domain position of the physical downlink control channel is in the time domain position where the second valid reference signal is to be applied, the user equipment applies the second valid reference signal at the time domain position of the physical downlink control channel.

6. The method as described in claim 2, further comprising: The version of the quasi-co-located source reference signal is determined based on at least one transmission configuration information state set, including a first transmission configuration information (TCI) state set and a second transmission configuration information state set, wherein the first transmission configuration information state set corresponds to the one or more first antenna configurations, and the second transmission configuration information state set corresponds to the one or more second antenna configurations.

7. The method of claim 6, wherein receiving the target signal or channel further includes using the first transmission configuration information state set or the second transmission configuration information state set based on whether the time instance of the target signal or channel is in the time domain location of the one or more first antenna configurations or the time domain location of the one or more second antenna configurations.

8. The method as described in claim 6, wherein the first media access control-control unit (MAC-CE) enables the first transmission configuration information state set, and the second media access control-control unit enables the second transmission configuration information state set.

9. The method of claim 6, wherein determining the version of the quasi-co-location source reference signal further comprises determining the version of the quasi-co-location source reference signal based on a Scheduled Physical Downlink Control Channel (PDCCH) including a single Transport Configuration Indication field or a Physical Downlink Control Channel including two Transport Configuration Indication fields.

10. The method of claim 9, wherein in the case where the physical downlink control channel includes the single transmission configuration indication field, the size of the single transmission configuration indication field is fixed for the first transmission configuration information state set and the second transmission configuration information state set; or in the case where the physical downlink control channel includes the two transmission configuration indication fields, the size of the first transmission configuration indication field included in the two transmission configuration indication fields is determined based on the first transmission configuration information state set, and the size of the second transmission configuration indication field included in the two transmission configuration indication fields is determined based on the second transmission configuration information state set.

11. A user equipment (UE), comprising: A memory device and a processor are configured to execute instructions stored on the memory device, wherein the instructions cause the processor to: receive antenna indicator information from a base station, the antenna indicator information indicating one or more first antenna configurations and one or more second antenna configurations; identify a first symbol set to which the one or more first antenna configurations are applied and a second symbol set to which the one or more second antenna configurations are applied; and receive a target signal or channel at a time instance using a version of a quasi-co-located (QCL) source reference signal (RS) based on whether a time instance occurs in the first symbol set or the second symbol set.

12. The user equipment as claimed in claim 11, wherein the antenna indicator information implicitly indicates the time-domain position of the one or more first antenna configurations and the time-domain position of the one or more second antenna configurations based on the time-domain positions of one or more sub-band full-duplex (SBFD) symbols and the time-domain positions of one or more non-sub-band full-duplex symbols, or wherein the antenna indicator information explicitly provides the time-domain position of the one or more first antenna configurations and the time-domain position of the one or more second antenna configurations.

13. The user equipment as claimed in claim 12, wherein the version of the quasi-co-located source reference signal includes a first valid reference signal of an instance of a reference signal in one or more first antenna configurations generated based on the antenna indicator information and a second valid reference signal of an instance of the reference signal in one or more second antenna configurations, and wherein the quasi-co-located source reference signal is a periodic quasi-co-located source reference signal or a semi-persistent quasi-co-located source reference signal.

14. The user equipment as claimed in claim 13, wherein the processor is further configured to receive the target signal or channel by applying channel attributes similar to the first valid reference signal or the second valid reference signal to the target signal or channel based on whether the time-domain location of the target signal or channel is in one or more sub-band full-duplex symbols or one or more non-sub-band full-duplex symbols.

15. The user equipment as claimed in claim 14, wherein, in the case that the scheduled physical downlink control channel (PDCCH) of the target signal or channel does not include a Transmission Configuration Indicator (TCI) field and the scheduling gap is greater than or equal to a predefined value, the user equipment identifies that the quasi-co-location channel status information (CSI) reference signal applied to the physical downlink shared channel (PDSCH) is the same as the quasi-co-location channel status information - reference signal applied to the physical downlink control channel; or wherein, in the case that the scheduled physical downlink control channel of the target signal or channel does not include the Transmission Configuration Indicator field and the scheduling gap is greater than the predefined value, when the time domain position of the physical downlink shared channel is in the time domain position where the first valid reference signal is to be applied, the user equipment applies the first valid reference signal at the time domain position of the physical downlink shared channel, and when the time domain position of the physical downlink control channel is in the time domain position where the second valid reference signal is to be applied, the user equipment applies the second valid reference signal at the time domain position of the physical downlink control channel.

16. The user equipment as claimed in claim 12, wherein the processor is further configured to: determine the version of the quasi-co-located source reference signal based on at least one transmission configuration information state set including a first transmission configuration information (TCI) state set and a second transmission configuration information state set, wherein the first transmission configuration information state set corresponds to the one or more first antenna configurations, and the second transmission configuration information state set corresponds to the one or more second antenna configurations.

17. The user equipment as claimed in claim 16, wherein the processor is further configured to receive the target signal or channel using the first transmission configuration information state set or the second transmission configuration information state set based on whether the time instance of the target signal or channel is in the time domain position of the one or more first antenna configurations or the one or more second antenna configurations.

18. The user equipment as claimed in claim 16, wherein the processor is further configured to: enable the first transmission configuration information state set using a first media access control-control unit (MAC-CE), and enable the second transmission configuration information state set using a second media access control-control unit.

19. The user equipment as claimed in claim 16, wherein the processor is further configured to determine the version of the quasi-co-located source reference signal based on a Scheduled Physical Downlink Control Channel (PDCCH) including a single Transport Configuration Indication field or a Physical Downlink Control Channel including two Transport Configuration Indication fields.

20. The user equipment as claimed in claim 19, wherein in the case where the physical downlink control channel includes the single transmission configuration indication field, the size of the single transmission configuration indication field is fixed with respect to the first transmission configuration information state set and the second transmission configuration information state set; or in the case where the physical downlink control channel includes the two transmission configuration indication fields, the size of the first transmission configuration indication field included in the two transmission configuration indication fields is determined based on the first transmission configuration information state set and the size of the second transmission configuration indication field included in the two transmission configuration indication fields is determined based on the second transmission configuration information state set.

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