Methods for beam state updating for uplink transmission
System, methods and apparatuses for updating beam state for uplink transmission can include a wireless communication node transmitting, and a wireless communication device receiving, a command signaling that indicates beam state information for a plurality of target transmissions. The wireless communication device can determine, according to the beam state information, parameters of the plurality of target transmissions.
1 . A method comprising:
receiving, by a wireless communication device from a wireless communication node, a command signaling that indicates beam state information for a plurality of target transmissions;
determining, by the wireless communication device according to the beam state information, parameters of the plurality of target transmissions, which comprises
determining, by the wireless communication device according to the beam state information, a first parameter of the parameters that is indicative of a reference sounding reference signal (reference SRS) of at least one of a type 1 configured grant (CG) PUSCH transmission, or a type 2 CG PUSCH transmission; and
determining, by the wireless communication device, according to a shared beam state of the beam state information, a parameter indicative of a reference sounding reference signal (reference SRS) in case a defined condition is satisfied; and determining, by the wireless communication device, to maintain at least one parameter unchanged in case the defined condition is not satisfied,
or
determining, by the wireless communication device, according to the beam state information, a first parameter for a target transmission, when a first time instance occurring a first time period after the command signaling is earlier than a second time instance occurring a second time period prior to the target transmission.
2 . The method of claim 1 , wherein the plurality of target transmissions comprises at least one of: a physical downlink control channel (PDCCH) transmission, a physical uplink control channel (PUCCH) transmission, a channel state information reference signal (CSI-RS) transmission, a sounding reference signal (SRS) transmission, a dynamic grant (DG) physical uplink shared channel (PUSCH) transmission, one type 1 CG PUSCH transmission, one type 2 CG PUSCH transmission, or a physical downlink shared channel (PDSCH) transmission.
3 . The method of claim 1 , wherein the command signaling comprises a downlink control information (DCI) signaling or a medium access control control element (MAC CE) signaling.
4 . The method of claim 1 , wherein the beam state information comprises at least one of: a quasi co-location (QCL) information, a transmission configuration indicator (TCI) state, spatial relation information, reference signal information, spatial filter information, or precoding information.
5 . The method of claim 2 , comprising at least one of:
determining, by the wireless communication device according to a downlink control information (DCI) signaling or the beam state information, a parameter indicative of at least one of: a pathloss reference signal (PL-RS), a transmitted precoding matrix indicator (TPMI), a number of layers, an antenna port, a modulation and coding scheme (MCS), or a transmission block size (TBS),
determining, by the wireless communication device, at least one of: at least one radio resource control (RRC) parameter, at least one access control control element (MAC CE) parameter, or at least one downlink control information (DCI) parameter, that remains same as for at least a previous PUSCH transmission,
determining, by the wireless communication device, a parameter according to a rule of a fixed TBS or a fixed code rate for a plurality of CG PUSCH transmissions, or
determining, by the wireless communication device, a parameter according to a default or predefined scheme.
6 . The method of claim 1 , wherein the defined condition comprises the wireless communication device receiving an indication to enable determination of the parameter indicative of the reference SRS, wherein the indication is configured for at least one of: the DG PUSCH transmission, the type 1 CG PUSCH transmission or the type 2 CG PUSCH transmission.
7 . The method of claim 1 , wherein the defined condition comprises that a number of a port for a CG PUSCH transmission is 1.
8 . The method of claim 1 , wherein the defined condition comprises that the shared beam state is indicated via a downlink control information (DCI) transmission for scheduling an uplink transmission.
9 . The method of claim 1 , wherein the first time period is determined according to:
a transmission time of a feedback message of the wireless communication device,
a transmission time of at least one SRS corresponding to a shared beam state,
a processing time of the wireless communication node, or
a processing time of the wireless communication device.
10 . The method of claim 1 , wherein the second time period is determined according to at least one of:
a capability of the wireless communication device,
a minimum value of those provided by parameter k 2 in a PUSCH-ConfigCommon information element, or
a time period between a downlink control information (DCI) scheduling a target transmission and a start of the target transmission.
11 . The method of claim 1 , comprising:
determining, by the wireless communication device according to the beam state information, the first parameter for the target transmission with number of ports as 1, if a feedback message is not transmitted earlier than the second time instance.
12 . A method comprising:
sending, by a wireless communication node to a wireless communication device, a command signaling that indicates beam state information for a plurality of target transmissions,
wherein the wireless communication device determines, according to the beam state information, parameters of the plurality of target transmissions, which comprises determining, according to the beam state information, a first parameter of the parameters that is indicative of a reference sounding reference signal (reference SRS) of at least one of a type 1 configured grant (CG) PUSCH transmission, or a type 2 CG PUSCH transmission, and wherein:
the wireless communication device determines, according to a shared beam state of the beam state information, a parameter indicative of a reference sounding reference signal (reference SRS) in case a defined condition is satisfied and the wireless communication device determines to maintain at least one parameter unchanged in case the defined condition is not satisfied,
or
the wireless communication device determines, according to the beam state information, a first parameter for a target transmission, when a first time instance occurring a first time period after the command signaling is earlier than a second time instance occurring a second time period prior to the target transmission.
13 . The method of claim 12 , wherein the plurality of target transmissions comprises at least one of: a physical downlink control channel (PDCCH) transmission, a physical uplink control channel (PUCCH) transmission, a channel state information reference signal (CSI-RS) transmission, a sounding reference signal (SRS) transmission, a dynamic grant (DG) physical uplink shared channel (PUSCH) transmission, one type 1 CG PUSCH transmission, one type 2 CG PUSCH transmission, or a physical downlink shared channel (PDSCH) transmission.
14 . The method of claim 12 , wherein the command signaling comprises a downlink control information (DCI) signaling or a medium access control control element (MAC CE) signaling.
15 . The method of claim 12 , wherein the beam state information comprises at least one of: a quasi co-location (QCL) information, a transmission configuration indicator (TCI) state, spatial relation information, reference signal information, spatial filter information, or precoding information.
16 . A wireless communication device, comprising:
at least one processor configured to:
receive, via a receiver from a wireless communication node, a command signaling that indicates beam state information for a plurality of target transmissions;
determine, according to the beam state information, parameters of the plurality of target transmissions, which comprises: determin ing according to the beam state information, a first parameter of the parameters that is indicative of a reference sounding reference signal (reference SRS) of at least one of a type 1 configured grant (CG) PUSCH transmission, or a type 2 CG PUSCH transmission; and
determine, according to a shared beam state of the beam state information, a parameter indicative of a reference sounding reference signal (reference SRS) in case a defined condition is satisfied and determine, to maintain at least one parameter unchanged in case the defined condition is not satisfied,
or
determine, according to the beam state information, a first parameter for a target transmission, when a first time instance occurring a first time period after the command signaling is earlier than a second time instance occurring a second time period prior to the target transmission.
17 . A wireless communication node, comprising:
at least one processor configured to:
send, via a transmitter to a wireless communication device, a command signaling that indicates beam state information for a plurality of target transmissions,
wherein the wireless communication device determines, according to the beam state information, parameters of the plurality of target transmissions, which comprises the wireless communication device determining, according to the beam state information, a first parameter of the parameters that is indicative of a reference sounding reference signal (reference SRS) of at least one of a type 1 configured grant (CG) PUSCH transmission, or a type 2 CG PUSCH transmission, and wherein:
the wireless communication device determines, according to a shared beam state of the beam state information, a parameter indicative of a reference sounding reference signal (reference SRS) in case a defined condition is satisfied and determines to maintain at least one parameter unchanged in case the defined condition is not satisfied,
or
the wireless communication device determines, according to the beam state information, a first parameter for a target transmission, when a first time instance occurring a first time period after the command signaling is earlier than a second time instance occurring a second time period prior to the target transmission.