Indications of precoder and transmission layer for subscriber data management based simulation uplink transmission
Methods, systems, and devices related to wireless communication are described. One example method receiving, by a wireless communication device, from a network device, a transmission configuration information comprising indications of one or more precoders and one or more transmission layer numbers for one or more control channel transmissions; determining, by the wireless communication device, the one or more control channel transmissions based the transmission configuration information; wherein each control channel transmission corresponds to a different transmission layer(s); configuring, by the wireless communication device, one or more sounding reference signal (SRS) resource sets for the one or more control channel transmissions based on the transmission configuration information; wherein each control channel transmission associates with an SRS resource set; and transmitting, from the wireless communication device after determining and configuring, one or more control channel transmissions to the network device.
1 . A method of wireless communication, comprising:
receiving, by a wireless communication device, from a network device, a transmission configuration information comprising indications of one or more precoders and one or more transmission layer numbers for one or more physical channel transmissions;
determining, by the wireless communication device, the one or more physical channel transmissions based on the transmission configuration information, wherein each physical channel transmission corresponds to a different transmission layer;
configuring, by the wireless communication device, one or more sounding reference signal (SRS) resource sets for the one or more physical channel transmissions based on the transmission configuration information, wherein each physical channel transmission associates with an SRS resource set; and
transmitting, by the wireless communication device after determining and configuring, one or more physical channel transmissions to the network device,
wherein at least one of a transmit precoding matrix indicator (TPMI) field or a sounding reference signal resource indicator (SRI) field is indicated as unused by a codepoint, wherein the codepoint is one of: a codepoint not used for indication, a reserved codepoint, a last codepoint, or an additional codepoint.
2 . The method of claim 1 , wherein the one or more physical channel transmissions include physical uplink shared channel (PUSCH) transmissions.
3 . The method of claim 2 , wherein the PUSCH transmissions are fully or partially overlapped in at least one of a time domain or a frequency domain.
4 . The method of claim 2 , wherein the one or more SRS resource sets are configured for codebook based PUSCH transmission.
5 . The method of claim 4 , wherein indications of the one or more precoder and the one or more transmission layer numbers comprise a plurality of precoding matrices;
wherein the plurality of precoding matrices is indicated by one or more transmit precoding matrix indicator (TPMI) fields; and
wherein the TPMI fields are determined by downlink control information (DCI) indication or radio resource control (RRC) signaling.
6 . The method of claim 5 , wherein the TPMI field comprises at least one of: a first precoding information and a number of layers indication field or a second precoding information indication field.
7 . The method of claim 5 , wherein the TPMI fields are determined by at least one of: maximum transmission layers, maximum number of antenna ports, or maximum coherence capability of antenna ports configured for the PUSCH transmission.
8 . The method of claim 5 , wherein the indications of transmission layers of the PUSCH transmissions comprising a plurality of layer number combinations;
wherein values of the transmission layers within the layer number combination respectively corresponds the PUSCH transmissions; and
wherein values of the transmission layers within the layer number combination respectively corresponds the precoding information and number of layer fields.
9 . The method of claim 8 , wherein the plurality of layer number combinations is indicated by a field in DCI;
wherein the field can be independently used as indications or reservations of another field in DCI.
10 . The method of claim 2 , wherein the one or more SRS resource sets are set to non-codebook.
11 . The method of claim 10 , wherein indications of the one or more precoder and the one or more transmission layer numbers comprise a plurality of SRS resource indicator (SRI) indications;
wherein the plurality of SRI indications is indicated by one or more SRI fields; and
wherein the SRI fields are determined DCI indication or RRC signaling.
12 . The method of claim 11 , wherein the indications of transmission layers of the PUSCH transmissions comprising a plurality of layer number combinations;
wherein values of the transmission layers within the layer number combination respectively corresponds the PUSCH transmissions; and
wherein values of the transmission layers within the layer number combination respectively corresponds the precoding information and number of layer fields.
13 . The method of claim 12 , wherein the plurality of layer number combinations is indicated by a field in DCI;
wherein the field can be independently used as indications or reservations of another field in DCI.
14 . The method of claim 11 , wherein the SRI field comprises at least one of: a first SRS resource indicator field or a second SRS resource indicator field.
15 . The method of claim 11 , wherein the SRI fields are determined by at least one of: maximum transmission layers, or the number of SRS resource in an SRS resource set configured for the PUSCH transmission.
16 . A method of wireless communication, comprising:
transmitting, by a network device, to a wireless communication device, a transmission configuration information comprising indications of one or more precoders and one or more transmission layer numbers for one or more physical channel transmissions, wherein the wireless communication device determines the one or more physical channel transmissions based on the transmission configuration information, wherein each physical channel transmission corresponds to a different transmission layer, wherein the wireless communication device configures one or more sounding reference signal (SRS) resource sets for the one or more physical channel transmissions based on the transmission configuration information, wherein each physical channel transmission associates with an SRS resource set; and
receiving, by the network device, the one or more physical channel transmissions,
wherein at least one of a transmit precoding matrix indicator (TPMI) field or a sounding reference signal resource indicator (SRI) field is indicated as unused by a codepoint, wherein the codepoint is one of: a codepoint not used for indication, a reserved codepoint, a last codepoint, or an additional codepoint.
17 . The method of claim 16 , wherein the one or more physical channel transmissions include physical uplink shared channel (PUSCH) transmissions.
18 . A communication apparatus comprising at least one processor configured to implement a method, comprising:
receiving, by a wireless communication device, from a network device, a transmission configuration information comprising indications of one or more precoders and one or more transmission layer numbers for one or more physical channel transmissions;
determining, by the wireless communication device, the one or more physical channel transmissions based on the transmission configuration information, wherein each physical channel transmission corresponds to a different transmission layer;
configuring, by the wireless communication device, one or more sounding reference signal (SRS) resource sets for the one or more physical channel transmissions based on the transmission configuration information, wherein each physical channel transmission associates with an SRS resource set; and
transmitting, from the wireless communication device after determining and configuring, one or more physical channel transmissions to the network device,
wherein at least one of a transmit precoding matrix indicator (TPMI) field or a sounding reference signal resource indicator (SRI) field is indicated as unused by a codepoint, wherein the codepoint is one of: a codepoint not used for indication, a reserved codepoint, a last codepoint, or an additional codepoint.
19 . The apparatus of claim 18 , wherein the one or more physical channel transmissions include physical uplink shared channel (PUSCH) transmissions.
20 . The apparatus of claim 19 , wherein the PUSCH transmissions are fully or partially overlapped in at least one of a time domain or a frequency domain.