Assistance information from repeater
Apparatuses and methods for assistance information from repeaters. A method for a network-controlled repeater (NCR) includes receiving, by an NCR mobile termination (NCR-MT) entity first information for reception parameters of a set of uplink (UL) signals or channels and second information for reporting a metric corresponding to the set of UL signals or channels and receiving, on an access link of an NCR forwarding (NCR-Fwd) entity, based on the first information, an UL signal or channel from the set of UL signals or channels. The method further includes determining, by the NCR-MT entity a measurement for the UL signal or channel and a value for the metric based on the measurement and transmitting, by the NCR-MT entity, a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) that provides the value.
1 . A method for a network-controlled repeater (NCR), the method comprising:
receiving, by an NCR mobile termination (NCR-MT) entity:
first information for reception parameters of a set of uplink (UL) signals or channels, and
second information for reporting a metric corresponding to the set of UL signals or channels;
receiving, on an access link of an NCR forwarding (NCR-Fwd) entity, based on the first information, an UL signal or channel from the set of UL signals or channels;
determining, by the NCR-MT entity:
a measurement for the UL signal or channel, and
a value for the metric based on the measurement; and
transmitting, by the NCR-MT entity, a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) that provides the value.
2 . The method of claim 1 , wherein:
the UL signal or channel is a sounding reference signal (SRS),
the metric is an SRS reference signal received power (SRS-RSRP),
the value is an index for an RSRP range, from a set of RSRP ranges, that includes the SRS-RSRP, and
the set of RSRP ranges is predetermined or provided by higher layers.
3 . The method of claim 1 , wherein:
the UL signal or channel is a physical random access channel (PRACH),
the metric is an energy per resource element (EPRE),
the value is an index for an EPRE range, from a set of EPRE ranges, that includes the EPRE for the PRACH, and
the set of EPRE ranges is predetermined or provided by higher layers.
4 . The method of claim 1 , wherein:
the UL signal or channel is a sounding reference signal (SRS) or a physical random access channel (PRACH),
the metric is a relative time of arrival (RTOA) for the SRS or the PRACH, and
the RTOA is an offset between a slot or symbol for reception, by the NCR-Fwd entity, of the SRS or the PRACH and a slot or symbol for one of:
reception, by the NCR-MT entity, of a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS) associated with the SRS or the PRACH,
transmission of the SSB or CSI-RS, or
transmission of the SRS or the PRACH.
5 . The method of claim 1 , wherein:
the UL signal or channel is a physical random access channel (PRACH), and
the metric is a timing alignment (TA).
6 . The method of claim 1 , further comprising:
receiving a downlink control information (DCI) format or a medium access control control-element (MAC CE) that indicates:
an identity (ID) of the UL signal or channel,
to receive the UL signal or channel, and
to determine the measurement of the UL signal or channel.
7 . The method of claim 1 , wherein:
the UL signal or channel is a physical random access channel (PRACH), and
the PUSCH or the PUCCH further provides one or more of:
a random access channel (RACH) occasion,
a synchronization signal block (SSB) index, or
a PRACH preamble index
associated with the PRACH.
8 . The method of claim 1 , wherein:
receiving the UL signal or channel further comprises receiving the UL signal or channel based on a spatial domain filter having an index, and
the first information provides the index of the spatial domain filter from a set of spatial domain filters for the access link of the NCR-Fwd entity.
9 . A network-controlled repeater (NCR) comprising:
a transceiver of an NCR mobile termination (NCR-MT) entity configured to receive:
first information for reception parameters of a set of uplink (UL) signals or channels, and
second information for reporting a metric corresponding to the set of UL signals or channels;
a transceiver of an NCR forwarding (NCR-Fwd) entity configured to receive, on an access link and based on the first information, an UL signal or channel from the set of UL signals or channels; and
a processor of the NCR-MT entity, operably coupled to the transceiver of the NCR-MT entity and the transceiver of the NCR-Fwd entity, the processor of the NCR-MT entity configured to determine:
a measurement for the UL signal or channel, and
a value for the metric based on the measurement,
wherein the transceiver of the NCR-MT entity is further configured to transmit a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) that provides the value.
10 . The NCR of claim 9 , wherein:
the UL signal or channel is a sounding reference signal (SRS),
the metric is an SRS reference signal received power (SRS-RSRP),
the value is an index for an RSRP range, from a set of RSRP ranges, that includes the SRS-RSRP, and
the set of RSRP ranges is predetermined or provided by higher layers.
11 . The NCR of claim 9 , wherein:
the UL signal or channel is a physical random access channel (PRACH),
the metric is an energy per resource element (EPRE),
the value is an index for an EPRE range, from a set of EPRE ranges, that includes the EPRE for the PRACH, and
the set of EPRE ranges is predetermined or provided by higher layers.
12 . The NCR of claim 9 , wherein:
the UL signal or channel is a sounding reference signal (SRS) or a physical random access channel (PRACH),
the metric is a relative time of arrival (RTOA) for the SRS or the PRACH, and
the RTOA is an offset between a slot or symbol for reception, by the NCR-Fwd entity, of the SRS or the PRACH and a slot or symbol for one of:
reception, by the NCR-MT entity, of a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS) associated with the SRS or the PRACH,
transmission of the SSB or CSI-RS, or
transmission of the SRS or the PRACH.
13 . The NCR of claim 9 , wherein:
the UL signal or channel is a physical random access channel (PRACH), and
the metric is a timing alignment (TA).
14 . The NCR of claim 9 , wherein:
the transceiver of the NCR-MT entity is further configured to receive a downlink control information (DCI) format or a medium access control control-element (MAC CE) that indicates:
an identity (ID) of the UL signal or channel,
to receive the UL signal or channel, and
to determine the measurement of the UL signal or channel.
15 . The NCR of claim 9 , wherein:
the UL signal or channel is a physical random access channel (PRACH), and
the PUSCH or the PUCCH further provides one or more of:
a random access channel (RACH) occasion,
a synchronization signal block (SSB) index, or
a PRACH preamble index
associated with the PRACH.
16 . The NCR of claim 9 , wherein:
the transceiver of the NCR-Fwd entity is further configured to receive the UL signal or channel based on a spatial domain filter having an index, and
the first information provides the index of the spatial domain filter from a set of spatial domain filters for the access link of the NCR-Fwd entity.
17 . A base station comprising:
a transceiver configured to:
transmit, to a network-controlled repeater (NCR), first information for reception parameters of a set of uplink (UL) signals or channels,
transmit, to the NCR, second information for reporting a metric corresponding to the set of UL signals or channels; and
receive, from the NCR, a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH) that provides a value for the metric that is associated with an UL signal or channel, from the set of UL signals or channels.
18 . The base station of claim 17 , wherein:
the UL signal or channel is a sounding reference signal (SRS),
the metric is an SRS reference signal received power (SRS-RSRP),
the value is an index for an RSRP range, from a set of RSRP ranges, that includes the SRS-RSRP, and
the set of RSRP ranges is predetermined or provided by higher layers.
19 . The base station of claim 17 , wherein:
the UL signal or channel is a physical random access channel (PRACH), and
the metric is a timing alignment (TA).
20 . The base station of claim 17 , wherein:
the transceiver is further configured to transmit, to the NCR, a downlink control information (DCI) format or a medium access control control-element (MAC CE) that indicates:
an identity (ID) of the UL signal or channel,
to receive the UL signal or channel, and
to measure the UL signal or channel.