Method for transmitting data on physical uplink shared channel, data transmission method, terminal, network device, and chip system
This disclosure provides a method for transmitting data on a physical uplink shared channel, a data transmission method, a terminal, a network device, and a chip system. A terminal receives indication information delivered by a plurality of network devices. The indication information is used to indicate a plurality of precoders (precoders). The terminal determines the plurality of precoders based on the indication information, and repeatedly sends a physical uplink shared channel PUSCH by using the plurality of precoders. Different precoders are used for at least two of the PUSCHs. In this disclosure, the PUSCH is repeatedly sent by using different precoders. This disclosure is applicable to 5G and future wireless networks.
1 . A method of transmitting data on a physical uplink shared channel (PUSCH), wherein the method comprises:
receiving, by a terminal, indication information indicating a plurality of precoders;
determining, by the terminal based on the indication information, the plurality of precoders; and
repeatedly sending, by the terminal, a PUSCH a plurality of times using the plurality of precoders, wherein the precoders used for at least two of the plurality of times of sending the PUSCH are different,
wherein, before the receiving, the method further comprises:
performing, by the terminal, channel measurement based on a plurality of received channel state information reference signals (CSI-RSs), to respectively obtain a plurality of sounding reference signal (SRS) precoders;
configuring, by the terminal, a plurality of SRS resources based on the plurality of SRS precoders; and
sending, by the terminal, a plurality of SRSs using the plurality of SRS resources.
2 . The method according to claim 1 , wherein, in the configuring, the plurality of SRS resources are respectively configured based on the plurality of SRS precoders obtained by performing the channel measurement based on the plurality of CSI-RSs.
3 . The method according to claim 1 , wherein the plurality of precoders are indicated by a sounding reference signal resource indicator (SRI) field, and
the plurality of precoders are jointly indicated by one SRI in the SRI field; or
the plurality of precoders are independently indicated by a plurality of SRIs in the SRI field.
4 . The method according to claim 2 , wherein
the plurality of precoders are respectively indicated, in a transmission precoding matrix indicator (TPMI) field, by a plurality of TPMIs, and each TPMI among the plurality of TPMIs corresponds to one precoder among the plurality of precoders; or
the plurality of precoders are separately indicated by one TPMI in a TPMI field, and the one TPMI corresponds to the plurality of precoders.
5 . The method according to claim 1 , wherein the plurality of SRS resources configured by the terminal are SRS resources in one SRS resource set, or SRS resources in a plurality of SRS resource sets.
6 . The method according to claim 1 , wherein, in the repeatedly sending, the PUSCH is sent
by using a same time domain resource, but with different ports or different frequency domain resources, or
by using a same port, but with different frequency domain resources or different time domain resources, or
by using a same frequency domain resource, but with different ports or different time domain resources.
7 . The method according to claim 1 , wherein the performing comprises:
performing, by the terminal, the channel measurement on the plurality of received CSI-RSs to respectively obtain a plurality of channel matrices; and
respective selecting, by the terminal, the plurality of SRS precoders based on the plurality of channel matrices.
8 . A terminal, comprising:
a transceiver, configured to receive indication information indicating a plurality of precoders; and
a processor, configured to determine the plurality of precoders based on the indication information, wherein
the transceiver is further configured to repeatedly send a physical uplink shared channel PUSCH) a plurality of times based on the plurality of precoders determined by the processor, wherein the precoders used for at least two of the plurality of times of sending the PUSCH are different;
the transceiver is further configured to receive a plurality of channel state information reference signals (CSI-RSs);
the processor is further configured to perform channel measurement based on the plurality of received CSI-RSs, to respectively obtain a plurality of sounding reference signal (SRS) precoders;
the processor is further configured to configure a plurality of SRS resources based on the plurality of SRS precoders; and
the transceiver is further configured to send a plurality of SRSs on the plurality of SRS resources.
9 . The terminal according to claim 8 , wherein the processor is configured to respectively configure the plurality of SRS resources based on the plurality of SRS precoders obtained by performing the channel measurement based on the plurality of CSI-RSs.
10 . The terminal according to claim 8 , wherein the plurality of precoders are indicated by a sounding reference signal resource indicator (SRI) field, and
the plurality of precoders are jointly indicated by one SRI in the SRI field; or
the plurality of precoders are independently indicated by a plurality of SRIs in the SRI field.
11 . The terminal according to claim 8 , wherein
the plurality of precoders are respectively indicated, in a transmission precoding matrix indicator (TPMI) field, by a plurality of TPMIs, and each TPMI among the plurality of TPMIs corresponds to one precoder among the plurality of precoders; or
the plurality of precoders are separately indicated by one TPMI in a TPMI field, and the one TPMI corresponds to the plurality of precoders.
12 . The terminal according to claim 8 , wherein the plurality of SRS resources configured by the processor are SRS resources in one SRS resource set, or SRS resources in a plurality of SRS resource sets.
13 . The terminal according to claim 8 , wherein
the transceiver is further configured to repeatedly send the PUSCH
by using a same time domain resource, but with different ports or different frequency domain resources, or
by using a same port, but with different frequency domain resources or different time domain resources, or
by using a same frequency domain resource, but with different ports or different time domain resources.
14 . The terminal according to claim 8 , wherein the processor is configured to:
perform the channel measurement on the plurality of received CSI-RSs to respectively obtain a plurality of channel matrices and
respective select the plurality of SRS precoders based on the plurality of channel matrices.
15 . A non-transitory computer-readable storage medium storing computer instructions executable by a processor to enable a terminal to perform a method of transmitting data on a physical uplink shared channel (PUSCH), wherein the method comprises:
receiving, by the terminal, indication information indicating a plurality of precoders;
determining, by the terminal based on the indication information, the plurality of precoders; and
repeatedly sending, by the terminal, a PUSCH a plurality of times using the plurality of precoders, wherein the precoders used for at least two of the plurality of times of sending the PUSCH are different,
wherein, before the receiving, the method further comprises:
performing, by the terminal, channel measurement based on a plurality of received channel state information reference signals (CSI-RSs), to respectively obtain a plurality of sounding reference signal (SRS) precoders;
configuring, by the terminal, a plurality of SRS resources based on the plurality of SRS precoders; and
sending, by the terminal, a plurality of SRSs using the plurality of SRS resources.
16 . The non-transitory computer-readable storage medium according to claim 15 , wherein, in the configuring, the plurality of SRS resources are respectively configured based on the plurality of SRS precoders obtained by performing the channel measurement based on the plurality of CSI-RSs.
17 . The non-transitory computer-readable storage medium according to claim 15 , wherein the plurality of precoders are indicated by a sounding reference signal resource indicator (SRI) field, and
the plurality of precoders are jointly indicated by one SRI in the SRI field; or
the plurality of precoders are independently indicated by a plurality of SRIs in the SRI field.
18 . The non-transitory computer-readable storage medium according to claim 15 , wherein
the plurality of precoders are respectively indicated, in a transmission precoding matrix indicator (TPMI) field, by a plurality of TPMIs, and each TPMI among the plurality of TPMIs corresponds to one precoder among the plurality of precoders; or
the plurality of precoders are separately indicated by one TPMI in a TPMI field, and the one TPMI corresponds to the plurality of precoders.
19 . The non-transitory computer-readable storage medium according to claim 15 , wherein the plurality of SRS resources configured by the terminal are SRS resources in one SRS resource set, or SRS resources in a plurality of SRS resource sets.
20 . The non-transitory computer-readable storage medium according to claim 15 , wherein the performing comprises:
performing, by the terminal, the channel measurement on the plurality of received CSI-RSs to respectively obtain a plurality of channel matrices; and
respective selecting, by the terminal, the plurality of SRS precoders based on the plurality of channel matrices.