CN113543326A - Physical uplink shared channel transmission method, network equipment and terminal equipment - Google Patents

Abstract

The invention discloses a physical uplink shared channel transmission method, network equipment and terminal equipment. The PUSCH transmission method is applied to terminal equipment and comprises the following steps: obtaining DCI; if the terminal equipment is configured to be in a non-codebook uplink transmission mode and N SRS resource sets for the non-codebook are configured, acquiring one or more first SRS resources indicated by the DCI and determining the SRS resource set where the one or more first SRS resources are located; determining target SRS resources corresponding to each PUSCH transmission in a plurality of PUSCH transmissions according to an SRS resource set to which one or more first SRS resources belong, wherein the target SRS resources corresponding to each PUSCH transmission are one or more SRS resources belonging to the same SRS resource set in the one or more first SRS resources; and carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

Description

Physical uplink shared channel transmission method, network equipment and terminal equipment

Technical Field

The present invention relates to the field of communications, and in particular, to a Physical Uplink Shared Channel (PUSCH) transmission method, a network device, and a terminal device.

Background

When configured in a Non-Codebook (Non-Codebook) Uplink transmission mode, the UE may schedule a Physical Uplink Shared Channel (PUSCH) or an unlicensed (granted grant) from Downlink Control Information (DCI). DCI format 0_0 can only schedule single-layer PUSCH transmission; when a plurality of Sounding Reference Signal (SRS) resources are configured and DCI format 0_1 and DCI format 0_2 are used for scheduling, the SRS Resource Indicator (SRI) in the DCI may indicate precoding (precoder) and rank (transmission rank) (i.e., the number of layers) used by the PUSCH. The SRS resource set (SRS resource set) containing SRS resources may be configured by higher layer parameters in SRS-config.

When the higher-layer parameter usage (usage) of the SRS resource set is configured as "nocodebook", only one SRS resource set can be configured, each SRS resource set contains 4 SRS resources at most, and only one SRS port (SRS port) can be configured in each SRS resource. The UE may calculate precoding of each SRS resource according to measurement of a non-zero power Channel State Information reference Signal (CSI-RS) resource (NZP CSI-RS resource) associated with the SRS resource set. When the usage of the SRS resource set is configured as "nocodebook", the above-mentioned one SRS resource set can be associated with only one NZP CSI-RS resource.

The maximum number of uplink transmission layers Lmax supported by the UE for the bits of the SRI field included in the DCI, and the number of SRS resources N included in the above-mentioned one SRS resource set_SRSAnd (4) determining. Tables 1 to 4 show that N is the number of Lmax 1 to 4, respectively_SRSAnd under the condition of 2 to 3, each value of the SRI domain in the DCI corresponds to the SRS resource.

Table 1(Lmax ═ 1)

Table 2(Lmax ═ 2)

Table 3(Lmax ═ 3)

Table 4(Lmax ═ 4)

In the prior art, when the UE is configured for non-codebook uplink transmission, because there is only one SRS resource set for the non-codebook, multiple PUSCH repeated transmissions use the same precoding and number of layers, and the corresponding spatial transmission beam information is the same, that is, multiple PUSCH repeated transmissions are transmitted to the same transmission node (TRP), and there may be a blockage between the UE and the TRP. Therefore, TRP needs to be switched, and in this case, a PUSCH transmission corresponding SRS resource set needs to be switched, but in the related art, how to transmit a PUSCH in a case where a plurality of SRS resource sets for a non-codebook are arranged has not been proposed.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a PUSCH transmission method, a network device, and a terminal device, so that a UE can determine how to transmit a PUSCH when the UE is configured as a non-codebook uplink transmission and a plurality of SRS resource sets for the non-codebook are configured, thereby improving reliability of a communication system.

In a first aspect, a PUSCH transmission method is provided, and is applied to a terminal device, and the method includes: acquiring downlink control information DCI; if the terminal equipment is configured to be in a non-codebook uplink transmission mode and N Sounding Reference Signal (SRS) resource sets configured for non-codebooks are provided, acquiring one or more first SRS resources indicated by the DCI and determining the SRS resource set where the one or more first SRS resources are located, wherein N is an integer greater than 1; determining a target SRS resource corresponding to each PUSCH transmission in a plurality of PUSCH transmissions according to an SRS resource set to which one or more first SRS resources belong, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set in the one or more first SRS resources; and carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

In a second aspect, a DCI sending method is provided, which is applied to a network device, and the method includes: if the terminal equipment is configured to be in a non-codebook uplink transmission mode and the number of SRS resource sets configured for the non-codebook is N, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal equipment, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1; and sending Downlink Control Information (DCI) to the terminal equipment according to an SRS resource set where one or more SRS resources in the target SRS resource are located, and indicating one or more first SRS resources through the DCI, wherein the target SRS resource is one or more of the one or more first SRS resources.

In a third aspect, a terminal device is provided, which includes a first obtaining module, configured to obtain DCI; a second obtaining module, configured to obtain one or more first SRS resources indicated by the DCI and determine an SRS resource set where the one or more first SRS resources are located, if the terminal device is configured in a non-codebook uplink transmission mode and N sounding reference signal SRS resource sets configured for non-codebooks are configured, where N is an integer greater than 1; a determining module, configured to determine, according to an SRS resource set to which one or more first SRS resources belong, a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set among the one or more first SRS resources; and the transmission module is used for carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

In a fourth aspect, a network device is provided, comprising: a determining module, configured to determine, if a terminal device is configured in a non-codebook uplink transmission mode and a set of SRS resources configured for a non-codebook is N, a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal device, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1; a sending module, configured to send downlink control information DCI to the terminal device according to an SRS resource set where one or more SRS resources in the target SRS resource are located, and indicate one or more first SRS resources through the DCI, where the target SRS resource is one or more SRS resources in the one or more first SRS resources.

In a fifth aspect, a terminal device is provided, which includes: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the first aspect.

A sixth aspect provides a network device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to the second aspect.

In a seventh aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to the first or second aspect.

In the embodiment of the invention, if a UE is configured with a non-codebook uplink transmission mode and N SRS resource sets configured for a non-codebook are provided, one or more first SRS resources indicated by DCI are obtained, an SRS resource set where the one or more first SRS resources are located is determined, and a target SRS resource corresponding to each PUSCH transmission in a plurality of PUSCH transmissions is determined according to the SRS resource set to which the one or more first SRS resources belong; and carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission. Therefore, when the UE is configured with a plurality of SRS resource sets used for non-codebooks, the target SRS resource corresponding to each PUSCH transmission can be determined, so that when a transmission link between the UE and a certain TRP is shielded, the SRS resource set corresponding to the PUSCH transmission is switched, the UE can transmit the PUSCH to another TRP, and the reliability of the system is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a flowchart illustrating a PUSCH transmission method according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating a DCI sending method according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical scheme of the invention can be applied to various communication systems, such as: global System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), Long Term Evolution/enhanced Long Term Evolution (LTE-a), Long Term Evolution (nr new Radio), and so on.

User Equipment (UE), also referred to as Terminal Equipment, Mobile Terminal (Mobile Terminal), Mobile User Equipment (ms), etc., may communicate with one or more core networks via a Radio Access Network (e.g., RAN), and may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers with ms, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, which exchange languages and/or data with the Radio Access Network.

The Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (eNB or e-NodeB) in LTE, a TRP, and a 5G Base Station (gNB), and the present invention is not limited thereto, but for convenience of description, the following embodiments use the gNB as an example.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Fig. 1 is a flowchart of a PUSCH transmission method provided in an embodiment of the present invention, where the method 100 may be executed by a terminal device. In other words, the method may be performed by software or hardware installed on the terminal device. As shown in fig. 1, the method may include the following steps.

S110, acquires Downlink Control Information (DCI).

The DCI carries downlink control information configured for the terminal equipment by the network side. In the embodiment of the present invention, the DCI may adopt a DCI format 0_1 or a DCI format 0_2 format.

S112, if the terminal device is configured in the non-codebook uplink transmission mode and N SRS resource sets configured for the non-codebook are configured, acquiring one or more first SRS resources indicated by the DCI, and determining an SRS resource set where the one or more first SRS resources are located, where N is an integer greater than 1.

In the embodiment of the present invention, the SRS resource set for the non-codebook may be configured by a higher layer parameter, for example, a higher layer parameter in SRS-config. In practical applications, a higher-layer parameter "usage" of an SRS resource set may be configured as "nocodebook", that is, in the embodiment of the present invention, when the number of SRS resource sets (SRS resource sets) of the SRS resource set with the higher-layer parameter usage configured as "nocodebook" is N (N >1), each SRS resource set may correspond to one TRP. N is an integer greater than 1, e.g., N ═ 2.

In one possible implementation manner, CSI-RSs associated with each SRS resource set are different, that is, different SRS resource sets are associated with different CSI-RSs, and each CSI-RS corresponds to one beam, so that multiple SRS resource sets correspond to multiple TRPs or different beams of one TRP. And the UE calculates the precoding of each SRS resource according to the measurement of the CSI-RS associated with each SRS resource set.

Or, in another possible implementation manner, the CSI-RSs associated with each SRS resource set may also be the same, that is, the N SRS resource sets are associated with the same CSI-RS. Thus, multiple sets of SRS resources correspond to one beam.

In one possible implementation, the one or more first SRS resources may be indicated by an SRI field in the DCI. In the embodiment of the present invention, SRS resources may be numbered, one SRS resource index is indicated in an SRI domain by presetting a correspondence between an SRS resource index (i.e., a bit field mapping index in tables 1 to 3 in the related art) and one or more SRS resources, and according to the SRS resource index, the UE may determine an SRS resource indicated by a network side.

In one possible implementation manner, the DCI may include a plurality of SRI domains, and a correspondence between the SRI domains and SRS resource sets may be preset, where each SRI domain indicates one or more first SRS resources in the SRS resource set corresponding to the SRI domain. Therefore, in this possible implementation manner, determining an SRS resource set in which one or more first SRS resources are located includes: and determining an SRS resource set where one or more first SRS resources indicated by each SRI domain are located according to the corresponding relation between the SRI domain and the SRS resource set.

In the above possible implementation manner, the SRS resources in each SRS resource set may be encoded separately. For example, assuming that 2 SRS resource sets are included, a first SRS resource set includes two SRS resources numbered 0 and 1, and a second SRS resource set includes three SRS resources numbered 0, 1, and 2, one or more first SRS resources included in the first SRS resource set are indicated in the first SRI domain, assuming that two SRS resources numbered 0 and 1 are indicated, if indexes numbered 0 and 1 correspond to 2, an index indicated by the first SRI domain is 2, one or more first SRS resources included in the second SRS resource set are indicated in the second SRI domain, assuming that two SRS resources numbered 0 and 2 are indicated, and if indexes numbered 0 and 1 correspond to 4, an index indicated by the second SRI domain is 4.

Or, in another possible implementation manner, the DCI includes one SRI field, and acquiring the one or more first SRS resources indicated by the SRS resource indication SRI field in the DCI may include: acquiring a target SRS resource index indicated by the SRI domain; acquiring one or more first SRS resources corresponding to the target SRS resource index according to a preset corresponding relation between the SRS resource index and the SRS resource number; the SRS resource numbers are used for indicating the SRS resources in the N SRS resource sets, and the SRS resources in the N SRS resource sets are numbered in advance according to a sequence. That is, in this possible implementation manner, all SRS resources in the N SRS resource sets are numbered uniformly, an SRS resource index corresponds to one or more SRS resources that are numbered uniformly, and the corresponding SRS resource is indicated by the SRS resource index.

For example, in the foregoing possible implementation manner, it is assumed that 2 SRS resource sets are included, a first SRS resource set includes 1 SRS resource, and a second SRS resource set includes 2 SRS resources, so that the number of the 1 SRS resource in the first SRS resource set is 0, and the number of the 2 SRS resource in the second SRS resource set is 1 and 2, respectively. The correspondence of the SRS resource index to the SRS resource may be as shown in table 5 below.

Table 5.

SRS resource index	Corresponding resource number
		0	0
1	1
		2	2
3	0,1
		4	0,2
5	1,2
		6	0,1,2

If the index indicated by the SRI field is 4, the UE may determine, according to table 5, that the first SRS resource includes SRS resources 0 and SRS resources 2, and then, by combining the configuration information of each SRS resource set, may determine that the SRS resource numbered 0 belongs to the first SRS resource set, and the SRS resource numbered 2 belongs to the second SRS resource set.

S114, according to an SRS resource set to which one or more first SRS resources belong, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set in the one or more first SRS resources.

In the embodiment of the present invention, the multiple PUSCH transmissions may be repeated transmissions of multiple PUSCHs, where the number of repeated transmissions may be configured by the network, or may also be dynamically indicated by DCI.

Or, in the embodiment of the present invention, the multiple PUSCH transmissions may also be periodic multiple PUSCH transmissions configured with an uplink grant.

In one possible implementation manner, in S114, when determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions, one or more first SRS resources may be mapped to each PUSCH transmission according to an SRS resource set in which one or more first SRS resources are located, so as to obtain the target SRS resource corresponding to each PUSCH transmission, where one or more first SRS resources (that is, the target SRS resources) belonging to the same SRS resource set are mapped to the same PUSCH transmission. That is, in this possible implementation, one or more first SRS resources are mapped to respective PUSCH transmissions in terms of a set of SRS resources.

For example, in one possible implementation manner, if the number M of SRS resource sets in which one or more first SRS resources are located is greater than 1, one or more first SRS resources in the M SRS resource sets may be mapped to the PUSCH transmission each time in a manner of alternating mapping in turn. The alternative mapping refers to mapping one or more first SRS resources in a first SRS resource set to the PUSCH transmission for the first time, mapping one or more first SRS resources in a second SRS resource set to the PUSCH transmission for the second time, until one or more first SRS resources in an mth SRS resource set are mapped to the PUSCH transmission for the mth time, and then mapping one or more first SRS resources in the first SRS resource set to the PUSCH transmission for the M +1 th time, and such alternative mapping is performed until all the PUSCH transmissions are mapped.

Or, in another possible implementation manner, if the number M of SRS resource sets in which one or more first SRS resources are located is greater than 1, one or more first SRS resources in the M SRS resource sets may be mapped to each PUSCH transmission in a continuous mapping manner. Wherein the continuous mapping refers to mapping one or more first SRS resources in a first SRS resource set to the first n times of the PUSCH transmission, mapping one or more first SRS resources in a second SRS resource set to the (n +1) th to 2n times of the PUSCH transmission, until mapping one or more first SRS resources in an mth SRS resource set to the (n (M-1) +1) th to mth times of the PUSCH transmission, and mapping one or more first SRS resources in the first SRS resource set to the (M + n +1) th to (M +1) n times of the PUSCH transmission, and so on, until all PUSCH transmissions are mapped, where n is an integer greater than 1. In this possible implementation manner, the value of n may be determined according to the number of PUSCH transmissions and M, and may specifically be determined according to an actual application, which is not limited in the embodiment of the present invention.

In the two possible implementation manners, different SRS resource sets correspond to different TRPs, so that each PUSCH transmission in a plurality of PUSCH transmissions can be sent to different TRPs, thereby improving the possibility of system communication.

In another possible implementation manner, if the number M of SRS resource sets in which one or more first SRS resources are located is 1, it is determined that the target SRS resources corresponding to the PUSCH transmission are all the one or more first SRS resources indicated by the SRI field. That is, in this possible implementation, each PUSCH transmission corresponds to all first SRS resources indicated by the SRI field.

By adopting the various possible implementation manners, the dynamic switching of the multiple PUSCH transmissions of multiple TRPs and the multiple PUSCH transmissions of a single TRP can be realized according to the number of the SRS resource sets to which the one or more first SRS resources indicated by the SRI domain belong.

And S116, performing each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

In the embodiment of the present invention, one PUSCH transmission may be an actual PUSCH transmission or a nominal PUSCH transmission. The nominal PUSCH transmission refers to the transmission of a plurality of PUSCH repetition times indicated in a network equipment scheduling instruction, and the actual PUSCH transmission refers to a plurality of PUSCH transmissions divided by the nominal PUSCH transmission due to the fact that the PUSCH repeated for a plurality of times of the scheduling instruction meets a time slot boundary or an uplink and downlink switching point.

In this embodiment of the present invention, one first SRS resource included in a target SRS resource corresponds to one target precoding and one layer, and the target SRS resource may include one or more first SRS resources. Therefore, in one possible implementation manner, in S116, for any PUSCH transmission, performing the PUSCH transmission may include: and performing the PUSCH transmission according to the target precoding and the target layer number, wherein the target precoding corresponds to the target SRS resource corresponding to the PUSCH transmission, and the target layer number is the layer number corresponding to the target SRS resource corresponding to the PUSCH transmission.

In one possible implementation manner, one target layer number corresponds to one Demodulation Reference Signal (DMRS) port, and therefore, for any PUSCH transmission, K target precodes may be used when performing the PUSCH transmission, and the PUSCH transmission may be transmitted through K DMRS ports, where K is the number of SRS resources included in a target SRS resource corresponding to the PUSCH transmission, and one target precoding is used for one DMRS port.

For example, assume that the UE is configured in a non-codebook transmission mode, and supports a maximum number of streams (or number of layers) Lmax of uplink transmission of 2. The mapping rule of the first SRS resource of the plurality of PUSCH repeated transmissions is configured to alternate in turn.

If the number N of SRS resource sets configured by the higher layer is 2, there are 2 SRS resource sets, i.e. SRS resource set 0 and SRS resource set 1. There are 2 SRS resources per SRS resource set. Then 2 SRS resource sets collectively contain N_SRSThe corresponding SRS resources are numbered 0, 1,2, and 3, where SRS resources 0 and 1 belong to SRS resource set 0 and SRS resources 2 and 3 belong to SRS resource set 1. This configuration may be understood as SRS resource set 0 corresponding to TRP0 and SRS resource set 1 corresponding to TRP 1.

In this embodiment, the SRI value corresponding to the bit index of the SRI in the DCI indicates the following meaning as table 6 below (wherein, the index of the bit field mapping may be different).

Table 6.

Table 6 may be expanded to add the contents of table 7.

Table 7.

For another example, assume that the UE is configured in a non-codebook transmission scheme and supports the maximum number of streams Lmax of uplink transmission to be 2. The SRI mapping rules for multiple PUSCH repeated transmissions are configured to alternate in turn.

If the number N of SRS resource groups configured by the higher layer is 2, there are 2 SRS resource groups — SRS resource group 0 and SRS resource group 1. SRS resource group 1 has 2 SRS resources, and SRS resource group 2 has 1 SRS resource. Then 2 SRS resource groups collectively contain N_SRSThe corresponding SRS resources are numbered 0, 1, and 2, where SRS resources 0 and 1 belong to SRS resource group 0 and SRS resource 2 belongs to SRS resource group 1. This configuration can be understood as where resource group 0 of SRS corresponds to TRP0 and resource group 1 of SRS corresponds to TRP 1. At this time, N in the table is used_SRSColumn 3.

In this embodiment, the SRI value corresponding to the bit index of the SRI in the DCI indicates the following meaning as table 8 below (wherein, the index of the bit field mapping may be different).

Table 8.

In the embodiment of the present invention, different SRS resource sets correspond to different TRPs, and different distances from different TRPs to the UE may be different, so that power values of PUSCH transmitted to different TRPs may be different. Therefore, in one possible implementation manner, if the number M of SRS resource sets in which the one or more first SRS resources are located is greater than 1, before performing S116, the method may further include: determining M power control values, wherein M is the number of SRS resource sets in which one or more first SRS resources are located; and mapping the M power control values to the PUSCH transmission according to the mode that the first SRS resource is mapped to the PUSCH transmission of each time, so as to determine the transmission power of the PUSCH transmission of each time. That is, in this possible implementation, the mapping relationship between the M power control values and each PUSCH transmission is the same as the mapping relationship between one or more first SRS resource mappings in the M SRS resource sets and each PUSCH transmission. For example, if one or more first SRS resources are mapped to each PUSCH transmission in an alternating mapping manner, the M power control values are also mapped to each PUSCH transmission in an alternating mapping manner.

In one possible implementation, determining the M power control values may include: determining M first power values according to M groups of configured power control parameters, wherein the M groups of power control parameters are power control parameters configured for one or more first SRS resources in M SRS resource sets; acquiring one or more second power values indicated by a PUSCH (physical uplink shared channel) transmission power control signaling domain in the DCI; and determining M power control values according to the M first power values and/or the M second power values.

In this possible implementation manner, each SRS resource set corresponds to a group of power control parameters, where the group of power control parameters may include preset power control parameters for open-loop power control. Wherein, each group of power control parameters may be that the network side sends a configuration signaling to the terminal device to configure the power control parameters (for example, parameter P in the power formula) of a group of PUCCHs corresponding to each SRS resource set₀α, Patholoss RS, etc.). And the second power value is one or more second power values indicated by a transmission power control signaling (TPC command for scheduled PUSCH) field of the PUCCH in the DCI.

In a specific application, the second power value indicated in the transmission power control signaling domain of the PUSCH may be a dynamically adjusted value of the PUSCH transmission power. For example, by 1dB, or by 1dB, etc. Therefore, when determining M power control values, M first power values may be added or subtracted with one or more second power values, and the embodiment of the present invention is not limited in particular.

In one possible implementation, the PUSCH transmission power control signaling field in the DCI may indicate one second power value, or may indicate M second power values, and for different cases, when determining the M power control values, there are different processes. Therefore, in one possible implementation, determining M power control values according to the M first power values and/or the second power values may include: if the second power value indicated by the PUSCH transmission power control signaling domain is one, determining M power control values according to the M first power values and the second power value, where one second power value is determined according to a preset power control target value, the preset power control target value is the first power value configured by one or more first SRS resources included in a preset SRS resource set, the preset SRS resource set is one of the M SRS resource sets, or the preset power control target value is a maximum value or a minimum value of the M first power values. That is to say, in this possible implementation manner, a relative value of the transmission power of each PUCCH transmission with respect to the reference power value is determined with the first power value corresponding to one of the SRS resources as the reference power value, or a relative value of the transmission power of each PUCCH transmission with respect to the reference power value is determined with a maximum value or a minimum value of the first power values of the M SRS resources as the reference power value.

Or, in another possible implementation manner, determining M power control values according to the M first power values and/or the M second power values may include: and if the second power values indicated by the PUSCH transmission power control signaling domain are M, determining M power control values according to a corresponding relation according to M first power values and M second power values. For example, the 1 st power control value is the sum or difference of the first power value and the first second power value.

In one possible implementation manner, the maximum number of layers (i.e., the first preset parameter) of each PUSCH transmission may be determined according to any one of the following:

(1) the first preset parameter is L 'max, where L' max is a maximum number of layers for the terminal device to support the second uplink transmission.

(2) And under the condition that the number M of the SRS resource sets in which the first SRS resource is located is 1, the first preset parameter is Lmax, where Lmax is the maximum number of layers that the terminal device supports the first uplink transmission.

In the embodiment of the present invention, the UE may report the first maximum number of uplink transmission layers Lmax and the second maximum number of uplink transmission layers L 'max to the network side, where the first maximum number of uplink transmission layers Lmax may be the maximum number of uplink transmission layers supported by the UE when the number of SRS resource sets is 1, and the second maximum number of uplink transmission layers L' max may be the maximum number of uplink transmission layers supported by the UE when the number of SRS resource sets is greater than 1.

(3) And under the condition that the number M of SRS resource sets in which the first SRS resource is located is greater than 1, the first preset parameter is Lmax/M, wherein Lmax is the maximum number of layers that the terminal equipment supports first uplink transmission.

(4) The first preset parameter corresponding to the mth PUSCH transmission is Km, where Km is the number of SRS resources included in a target SRS resource set corresponding to the mth PUSCH transmission and is Km, the target SRS resource set is the SRS resource set where the target SRS resource corresponding to the mth PUSCH transmission is located, or the first preset parameter corresponding to the mth PUSCH transmission is the minimum value of Km and L' max, where Km is an integer greater than or equal to 1. That is to say, in this possible implementation manner, according to the number of the target SRS resource sets corresponding to each PUSCH transmission, the maximum number of layers of the current PUSCH transmission is determined, that is, the maximum number of layers of the current PUSCH transmission is equal to the number of the target SRS resource sets corresponding to the current PUSCH transmission, or the minimum value between the number of the target SRS resource sets corresponding to the current PUSCH transmission and the maximum number of layers of the second uplink transmission.

In another possible implementation manner, the maximum value of the first preset parameter may be set to 2, i.e., the number of layers of the PUSCH is limited, so as to reduce the UE complexity.

In a possible implementation manner, a second preset parameter is added to the configured multiple SRS resource sets, and a value of the second preset parameter may be a first predetermined value or a second predetermined value. In this possible implementation manner, when determining an SRS resource set in which one or more first SRS resources are located, the SRS resource set in which one or more first SRS resources are located may be determined according to a second preset parameter. For example, if the second preset parameter is a first predetermined value, one or more of the first SRS resources belong to a first SRS resource set, in which case, the maximum number of layers for each PUSCH transmission may be Lmax; or, if the second preset parameter is a second predetermined value, one or more of the first SRS resources belong to a plurality of second SRS resource sets, in this case, the maximum number of layers for each PUSCH transmission may be the first preset parameter, that is, the first preset parameter is determined in the above manner.

In the foregoing possible implementation manner, the first SRS resource set may be one of the second SRS resource sets, or the first SRS resource set may also be an SRS resource set other than the second SRS resource sets. For example, among the plurality of SRS resource sets configured, the plurality of SRS resource sets are divided into a first SRS resource set (only one SRS resource set) and a second SRS resource set (including a plurality of SRS resource sets). When the second preset parameter is a first preset value, one or more first SRS resources indicated by the SRI in the DCI belong to SRS resources of a first SRS resource set; and when the second preset parameter is a second preset value, the plurality of first SRS resources indicated by the SRI in the DCI belong to different SRS resources of a second SRS resource set.

For example, the SRS resource set of the network side configured UE is as shown in table 9 below, Lmax is 4, and the value of the first preset parameter is 2.

Table 9.

When the second preset parameter is the first preset value, (Lmax is 4, N) in table 4 is referred to_SRS4) and the value indicated by the SRI field corresponds to 4 SRS resources in SRS resource set 1.

When the second preset parameter is a second preset value, N_SRSThe sum of the number of SRS resources indicated by the first preset parameter in SRS resource set 1 (2 in this embodiment) and the number of SRS resources in SRS resource set 2 is 4. Referring to Table 6, the meaning indicated by each SRI field, the value indicated by the SRI field in DCI is obtainedCorresponding to the first 2 SRS resources in SRS resource set 1 and the 2 SRS resources in SRS resource set 2.

For another example, the network configures the SRS resource set of the UE as in table 10, where Lmax is 4 and the first predetermined parameter is 2.

Table 10.

When the second preset parameter is the first preset value, (Lmax is 4, N) in table 4 is referred to_SRS4) and the SRI value corresponds to 4 SRS resources in SRS resource set 1.

When the second preset parameter is a second preset value, N_SRSThe sum of the number of SRS resources in the SRS resource set 2 and the number of SRS resources in the SRS resource set 3 is 4. And the SRI values correspond to 2 SRS resources in SRS resource set 2 and 2 SRS resources in SRS resource set 3.

In the foregoing possible implementation manner, the value of the second preset parameter may be configured by higher layer signaling or indicated by the DCI.

By the technical scheme provided by the embodiment of the invention, the repeated transmission of the non-codebook PUSCH of multiple TRPs is supported on the basis of the SRI indication, the precoding indication of different TRPs can be supported, and the signaling change is small. And dynamic switching between the non-codebook multi-time PUSCH transmission of single TRP and the non-codebook multi-time PUSCH transmission of multiple TRPs can be realized.

Fig. 2 is a flowchart illustrating a DCI sending method according to an embodiment of the present invention, where the method 200 may be executed by a network device. In other words, the method may be performed by software or hardware installed on the network device. As shown in fig. 2, the method may include the following steps.

S210, if the terminal equipment is configured to be in a non-codebook uplink transmission mode and N non-codebook SRS resource sets are configured, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal equipment, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1.

S212, according to an SRS resource set where one or more SRS resources in the target SRS resource are located, sending downlink control information DCI to the terminal device, and indicating one or more first SRS resources through the DCI, where the target SRS resource is one or more SRS resources in the one or more first SRS resources.

The method 200 is a behavior of the network side corresponding to the method 100, and the network device may determine the target SRS resource corresponding to each PUSCH transmission and the first SRS resource indicated in the DCI in a corresponding manner in the method 100, which may specifically refer to the relevant description in the method 100.

In one possible implementation manner, CSI-RSs associated with different SRS resource sets may be different or may be the same.

In one possible implementation, indicating, by the DCI, a first SRS resource includes: indicating one or more of the first SRS resources by an SRI field in the DCI.

In one possible implementation, the DCI includes a plurality of SRI fields; indicating one or more first SRS resources by an SRI field in the DCI, including: and indicating the target SRS resource in the SRS resource set corresponding to the SRI in each SRI domain according to the corresponding relation between each SRI domain in the DCI and the N SRS resource sets.

In one possible implementation, the DCI includes one SRI field; indicating one or more first SRS resources by an SRI field in the DCI, including: and acquiring a target SRS resource index corresponding to the SRS resource number of the target SRS resource according to a preset corresponding relation between the SRS resource index and the SRS resource number, wherein the SRS resource number is used for indicating the SRS resources in N SRS resource sets, and the SRS resources in the N SRS resource sets are numbered in advance in sequence.

In one possible implementation manner, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal device includes: if the number M of SRS resource sets where one or more first SRS resources are located is larger than 1, mapping the first SRS resources in the M SRS resource sets to the PUSCH transmission in a manner of alternate mapping or continuous mapping in turn to obtain target SRS resources corresponding to the PUSCH transmission in each time; or if the number M of SRS resource sets in which one or more first SRS resources are located is 1, determining that all target SRS resources corresponding to PUSCH transmission are one or more first SRS resources.

In a possible implementation manner, the DCI further includes a PUSCH transmission power control signaling field, configured to indicate a second power value for PUSCH transmission.

In a possible implementation manner, the PUSCH transmission power control signaling field is configured to indicate a second power value, where the second power value is determined according to a preset power control target value, where the preset power control target value is a first power value corresponding to one or more first SRS resources included in a preset SRS resource set, the preset SRS resource set is one of M SRS resource sets, or the preset power control target value is a maximum value or a minimum value of first power values configured for target SRS resources included in the M SRS resource sets; or, the PUSCH transmits M second power values indicated by the power control signaling domain, where the ith second power value is determined according to the first power value of the target SRS resource configuration in the ith SRS resource set, where i is 1,2, …, M.

In the embodiment of the present invention, when the UE is configured in the non-codebook uplink transmission mode and N sets of SRS resources configured for the non-codebook are configured, according to the target SRS resource corresponding to each PUSCH transmission, the network device may send DCI to the UE to indicate the first SRS resource, so that the UE may determine the target SRS resource corresponding to each PUSCH transmission according to the indication of the DCI, implement each PUSCH transmission, and support the non-codebook PUSCH repeated transmission of multiple TRPs.

Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present invention, and as shown in fig. 3, the network device 300 includes: a first obtaining module 310, configured to obtain DCI; a second obtaining module 320, configured to obtain one or more first SRS resources indicated by the DCI and determine an SRS resource set where the one or more first SRS resources are located, if the terminal device is configured in a non-codebook uplink transmission mode and N sounding reference signal SRS resource sets configured for non-codebooks are configured, where N is an integer greater than 1; a determining module 330, configured to determine, according to an SRS resource set to which one or more first SRS resources belong, a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set in one or more first SRS resources; a transmission module 340, configured to perform each PUSCH transmission according to a target SRS resource corresponding to each PUSCH transmission.

In one possible implementation, the channel state information reference signals CSI-RS associated with different sets of SRS resources are different.

In one possible implementation, CSI-RSs associated with N SRS resource sets are the same.

In one possible implementation manner, the obtaining one or more first SRS resources indicated by the DCI includes: and acquiring one or more first SRS resources indicated by an SRS resource indication SRI domain in the DCI.

In one possible implementation, the DCI includes a plurality of SRI fields; determining a set of SRS resources in which one or more of the first SRS resources are located, including: and determining an SRS resource set where one or more first SRS resources indicated by each SRI domain are located according to the corresponding relation between the SRI domain and the SRS resource set.

In one possible implementation, the DCI includes one SRI field; acquiring one or more first SRS resources indicated by an SRS Resource Indication (SRI) domain in the DCI, wherein the acquiring comprises: acquiring a target SRS resource index indicated by the SRI domain; acquiring one or more first SRS resources corresponding to the target SRS resource index according to the corresponding relation between the SRS resource index and the SRS resource number; the SRS resource numbers are used for indicating the SRS resources in the N SRS resource sets, and the SRS resources in the N SRS resource sets are numbered in advance according to a sequence.

In a possible implementation manner, determining, according to an SRS resource set in which one or more first SRS resources are located, a target SRS resource corresponding to PUSCH transmission for each of multiple times of PUSCH transmission includes: and mapping one or more first SRS resources to the PUSCH transmission for each time according to an SRS resource set where the one or more first SRS resources are located to obtain target SRS resources corresponding to the PUSCH transmission for each time, wherein the one or more first SRS resources belonging to the same SRS resource set are mapped to the same PUSCH transmission.

In one possible implementation, mapping one or more of the first SRS resources to the respective PUSCH transmission includes: if the number M of SRS resource sets in which one or more first SRS resources are located is greater than 1, mapping the one or more first SRS resources to each PUSCH transmission according to one of the following: mapping the first SRS resource in the M SRS resource sets to the PUSCH transmission each time in a manner of alternate mapping in turn; mapping one or more first SRS resources in the M SRS resource sets to the PUSCH transmissions in a continuous mapping manner.

In one possible implementation, mapping one or more of the first SRS resources to the respective PUSCH transmission includes: if the number M of SRS resource sets in which one or more first SRS resources are located is 1, determining that the target SRS resources corresponding to the PUSCH transmission are the one or more first SRS resources indicated by the SRI field.

In one possible implementation, the determining module 330 is further configured to: determining M power control values, wherein M is the number of SRS resource sets in which one or more first SRS resources are located; and mapping the M power control values to the PUSCH transmission according to the mode that one or more first SRS resources are mapped to the PUSCH transmission at each time, so as to determine the transmission power of the PUSCH transmission at each time.

In one possible implementation, determining M power control values includes: determining M first power values according to M groups of configured power control parameters, wherein the M groups of power control parameters are power control parameters configured for one or more first SRS resources in M SRS resource sets; acquiring one or more second power values indicated by a PUSCH (physical uplink shared channel) transmission power control signaling domain in the DCI; and determining M power control values according to the M first power values and/or the M second power values.

In one possible implementation manner, determining M power control values according to the M first power values and/or the second power values includes: if the second power value indicated by the PUSCH transmission power control signaling domain is one, determining M power control values according to M first power values and one second power value, where one second power value is determined according to a preset power control target value, the preset power control target value is the first power value corresponding to one or more first SRS resources included in a preset SRS resource set, the preset SRS resource set is one of the M SRS resource sets, or the preset power control target value is a maximum value or a minimum value of the M first power values; or, if the number of the second power values indicated by the PUSCH transmission power control signaling domain is M, determining M power control values according to a corresponding relationship between M first power values and M second power values.

In one possible implementation, for any one of the PUSCH transmissions, performing the PUSCH transmission includes: and performing the PUSCH transmission according to the target precoding and the target layer number, wherein the target precoding corresponds to the target SRS resource corresponding to the PUSCH transmission, and the target layer number is the layer number corresponding to the target SRS resource corresponding to the PUSCH transmission.

In one possible implementation, the performing PUSCH transmission according to the target precoding and the target number of layers includes: and sending the PUSCH transmission through K demodulation reference signal (DMRS) ports by using K target precodes, wherein K is the number of target SRS resources corresponding to the PUSCH transmission, and one DMRS port uses one target precode.

In one possible implementation manner, a first preset parameter is determined according to any one of the following items, where the first preset parameter is a maximum number of layers of the PUSCH transmission at each time: the first preset parameter is L 'max, where L' max is a maximum number of layers for the terminal device to support the second uplink transmission; under the condition that the number M of SRS resource sets where one or more first SRS resources are located is 1, the first preset parameter is Lmax, where Lmax is the maximum number of layers that the terminal device supports first uplink transmission; under the condition that the number M of SRS resource sets where one or more first SRS resources are located is larger than 1, the first preset parameter is Lmax/M; the first preset parameter corresponding to the mth PUSCH transmission is Km, where Km is the number of SRS resources included in a target SRS resource set corresponding to the mth PUSCH transmission and is Km, the target SRS resource set is the SRS resource set where the target SRS resource corresponding to the mth PUSCH transmission is located, or the first preset parameter corresponding to the mth PUSCH transmission is the minimum value of Km and L' max, where Km is an integer greater than or equal to 1.

In one possible implementation manner, determining an SRS resource set in which one or more first SRS resources are located includes: and determining one or more SRS resource sets where the first SRS resources are located according to a second preset parameter.

In a possible implementation manner, determining, according to a second preset parameter, an SRS resource set in which one or more first SRS resources are located includes: if the second preset parameter is a first preset value, one or more first SRS resources belong to a first SRS resource set; or if the second preset parameter is a second preset value, one or more of the first SRS resources belong to a plurality of second SRS resource sets.

In a possible implementation manner, the first SRS resource set is one of the second SRS resource sets, or the first SRS resource set is an SRS resource set other than the second SRS resource sets.

In one possible implementation, the second preset parameter is configured by a higher layer signaling or indicated by the DCI.

The terminal device provided in the embodiment of the present invention can implement each process implemented by the terminal device in each method embodiment of fig. 1 to fig. 2, and achieve the same effect to avoid repetition, which is not described herein again.

Fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 4, the network device 400 includes: a determining module 410, configured to determine, if a terminal device is configured in a non-codebook uplink transmission mode and a set of SRS resources configured for a non-codebook is N, a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal device, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1; a sending module 420, configured to send downlink control information DCI to the terminal device according to an SRS resource set where one or more SRS resources in the target SRS resource are located, and indicate one or more first SRS resources through the DCI, where the target SRS resource is one or more SRS resources in the first SRS resources.

In one possible implementation, the channel state information reference signals CSI-RS associated with different sets of SRS resources are different.

In one possible implementation, CSI-RSs associated with N SRS resource sets are the same.

In one possible implementation, indicating, by the DCI, a first SRS resource includes: indicating one or more of the first SRS resources by an SRI field in the DCI.

In one possible implementation, the DCI includes a plurality of SRI fields; indicating one or more first SRS resources by an SRI field in the DCI, including: and indicating the target SRS resource in the SRS resource set corresponding to the SRI in each SRI domain according to the corresponding relation between each SRI domain in the DCI and the N SRS resource sets.

In one possible implementation, the DCI includes one SRI field; indicating one or more first SRS resources by an SRI field in the DCI, including: and acquiring a target SRS resource index corresponding to the SRS resource number of the target SRS resource according to the corresponding relation between the SRS resource index and the SRS resource number, wherein the SRS resource number is used for indicating the SRS resources in N SRS resource sets, and the SRS resources in the N SRS resource sets are numbered in advance in sequence.

In one possible implementation manner, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal device includes: if the number M of SRS resource sets where one or more first SRS resources are located is larger than 1, mapping one or more first SRS resources in the M SRS resource sets to the PUSCH transmission in a manner of alternate mapping or continuous mapping in turn to obtain target SRS resources corresponding to the PUSCH transmission in each time; or if the number M of SRS resource sets in which one or more first SRS resources are located is 1, determining that all target SRS resources corresponding to PUSCH transmission are one or more first SRS resources.

In a possible implementation manner, the DCI further includes a PUSCH transmission power control signaling field, configured to indicate a second power value for PUSCH transmission.

In a possible implementation manner, the PUSCH transmission power control signaling field is configured to indicate a second power value, where the second power value is determined according to a preset power control target value, where the preset power control target value is a first power value corresponding to one or more first SRS resources included in a preset SRS resource set, the preset SRS resource set is one of M SRS resource sets, or the preset power control target value is a maximum value or a minimum value of first power values configured for target SRS resources included in the M SRS resource sets; or, the PUSCH transmits M second power values indicated by the power control signaling domain, where the ith second power value is determined according to the first power value of the target SRS resource configuration in the ith SRS resource set, where i is 1,2, …, M.

The network device provided in the embodiment of the present invention can implement each process implemented by each network device or network side in each method embodiment in fig. 1 to fig. 2, and achieve the same effect to avoid repetition, which is not described herein again.

Fig. 5 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 500 shown in fig. 5 includes: at least one processor 501, memory 502, at least one network interface 504, and a user interface 503. The various components in the terminal device 500 are coupled together by a bus system 505. It is understood that the bus system 505 is used to enable connection communications between these components. The bus system 505 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 505 in FIG. 5.

The user interface 503 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 502 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous SDRAM (ESDRAM), Sync Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 502 of the subject systems and methods described in connection with the embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 502 stores elements, executable modules or data structures, or a subset thereof, or an expanded set thereof as follows: an operating system 5021 and application programs 5022.

The operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 5022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. The program for implementing the method according to the embodiment of the present invention may be included in the application program 5022.

In this embodiment of the present invention, the terminal device 500 further includes: a computer program stored on a memory 502 and executable on a processor 501, the computer program when executed by the processor 501 implementing the steps of:

acquiring downlink control information DCI;

if the terminal equipment is configured to be in a non-codebook uplink transmission mode and N Sounding Reference Signal (SRS) resource sets configured for non-codebooks are provided, acquiring one or more first SRS resources indicated by the DCI and determining the SRS resource set where the one or more first SRS resources are located, wherein N is an integer greater than 1;

determining a target SRS resource corresponding to each PUSCH transmission in a plurality of PUSCH transmissions according to an SRS resource set to which one or more first SRS resources belong, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set in the one or more first SRS resources;

and carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

The method disclosed by the above-mentioned embodiments of the present invention may be applied to the processor 501, or implemented by the processor 501. The processor 501 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 501. The Processor 501 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502 and performs the steps of the above method in combination with the hardware thereof. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 501, implements the steps of the method 300 as described above.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units designed to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

The terminal device 500 can implement the foregoing processes implemented by the terminal devices in fig. 1 to fig. 2, and details are not repeated here to avoid repetition.

Referring to fig. 6, fig. 6 is a structural diagram of a network device applied in the embodiment of the present invention, which can be used as a base station or a core network to implement the details of the methods 100 to 200, and achieve the same effect. As shown in fig. 6, the network device 600 includes: a processor 601, a transceiver 602, a memory 603, a user interface 604 and a bus interface.

In this embodiment of the present invention, the network device 600 further includes: a computer program stored in the memory 603 and executable on the processor 601, the computer program when executed by the processor 601 performing the steps of:

if the terminal equipment is configured to be in a non-codebook uplink transmission mode and the number of SRS resource sets configured for the non-codebook is N, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal equipment, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1;

and sending Downlink Control Information (DCI) to the terminal equipment according to an SRS resource set where one or more SRS resources in the target SRS resource are located, and indicating one or more first SRS resources through the DCI, wherein the target SRS resource is one or more SRS resources in the one or more first SRS resources.

In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 602 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 604 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 603 may store data used by the processor 601 in performing operations.

The network device 600 can implement the foregoing processes implemented by the network devices in fig. 1 to fig. 2, and achieve the same effect to avoid repetition, which is not described herein again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the network device or the terminal device in each of the embodiments shown in fig. 1 to 2 may implement each process, and may achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (33)

1. A method for transmitting a Physical Uplink Shared Channel (PUSCH) is applied to a terminal device, and comprises the following steps:

acquiring downlink control information DCI;

if the terminal equipment is configured to be in a non-codebook uplink transmission mode and N Sounding Reference Signal (SRS) resource sets configured for non-codebooks are provided, acquiring one or more first SRS resources indicated by the DCI and determining the SRS resource set where the one or more first SRS resources are located, wherein N is an integer greater than 1;

determining a target SRS resource corresponding to each PUSCH transmission in a plurality of PUSCH transmissions according to an SRS resource set to which one or more first SRS resources belong, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set in the one or more first SRS resources;

and carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

2. The method of claim 1, wherein channel state information reference signals, CSI-RS, associated with different sets of SRS resources are different.

3. The method of claim 1, wherein N of the SRS resource sets are associated with the same CSI-RS.

4. The method of claim 1, wherein acquiring the one or more first SRS resources indicated by the DCI comprises: and acquiring one or more first SRS resources indicated by an SRS resource indication SRI domain in the DCI.

5. The method of claim 4,

the DCI comprises a plurality of SRI domains;

determining a set of SRS resources in which one or more of the first SRS resources are located, including: and determining an SRS resource set where one or more first SRS resources indicated by each SRI domain are located according to the corresponding relation between the SRI domain and the SRS resource set.

6. The method of claim 4,

the DCI comprises an SRI domain;

acquiring one or more first SRS resources indicated by an SRS Resource Indication (SRI) domain in the DCI, wherein the acquiring comprises:

acquiring a target SRS resource index indicated by the SRI domain;

acquiring one or more first SRS resources corresponding to the target SRS resource index according to the corresponding relation between the SRS resource index and the SRS resource number; the SRS resource numbers are used for indicating the SRS resources in the N SRS resource sets, and the SRS resources in the N SRS resource sets are numbered in advance according to a sequence.

7. The method of any one of claims 1 to 6, wherein determining the target SRS resource corresponding to each PUSCH transmission in a plurality of PUSCH transmissions according to the SRS resource set in which one or more first SRS resources are located comprises:

and mapping one or more first SRS resources to the PUSCH transmission for each time according to an SRS resource set where the one or more first SRS resources are located to obtain target SRS resources corresponding to the PUSCH transmission for each time, wherein the one or more first SRS resources belonging to the same SRS resource set are mapped to the same PUSCH transmission.

8. The method of claim 7, wherein mapping one or more of the first SRS resources to the PUSCH transmissions comprises:

if the number M of SRS resource sets in which one or more first SRS resources are located is greater than 1, mapping the one or more first SRS resources to each PUSCH transmission according to one of the following:

mapping one or more first SRS resources in M SRS resource sets to the PUSCH transmission at each time in a manner of alternate mapping in turn;

mapping one or more first SRS resources in the M SRS resource sets to the PUSCH transmissions in a continuous mapping manner.

9. The method of claim 7, wherein mapping one or more of the first SRS resources to the PUSCH transmissions comprises:

if the number M of SRS resource sets in which one or more first SRS resources are located is 1, determining that the target SRS resources corresponding to the PUSCH transmission are the one or more first SRS resources indicated by the SRI field.

10. The method of claim 7, wherein prior to the transmission of each PUSCH, the method further comprises:

determining M power control values, wherein M is the number of SRS resource sets in which one or more first SRS resources are located;

and mapping the M power control values to the PUSCH transmission according to a mode that one or more first SRS resources are mapped to the PUSCH transmission at each time.

11. The method of claim 10, wherein determining M power control values comprises:

determining M first power values according to M groups of configured power control parameters, wherein the M groups of power control parameters are power control parameters configured for one or more first SRS resources in M SRS resource sets;

acquiring one or more second power values indicated by a PUSCH (physical uplink shared channel) transmission power control signaling domain in the DCI;

and determining M power control values according to the M first power values and/or the M second power values.

12. The method of claim 11, wherein determining M power control values in accordance with the M first power values and/or the second power values comprises:

if the second power value indicated by the PUSCH transmission power control signaling domain is one, determining M power control values according to M first power values and one second power value, where the second power value is determined according to a preset power control target value, the preset power control target value is the first power value corresponding to one or more first SRS resources included in a preset SRS resource set, the preset SRS resource set is one of the M SRS resource sets, or the preset power control target value is a maximum value or a minimum value of the M first power values; alternatively, the first and second electrodes may be,

and if the second power values indicated by the PUSCH transmission power control signaling domain are M, determining M power control values according to a corresponding relation according to M first power values and M second power values.

13. The method of any of claims 1 to 6, wherein the PUSCH transmission is performed for any one of the PUSCH transmissions, comprising:

and performing the PUSCH transmission according to the target precoding and the target layer number, wherein the target precoding is the precoding corresponding to the target SRS resource corresponding to the PUSCH transmission, and the target layer number is the layer number corresponding to the PUSCH transmission.

14. The method of claim 13, wherein the performing the PUSCH transmission according to a target precoding and a target number of layers comprises: and sending the PUSCH transmission through K demodulation reference signal (DMRS) ports by using K target precodes, wherein K is the number of target SRS resources corresponding to the PUSCH transmission, and one DMRS port uses one target precode.

15. The method according to any of claims 1 to 6, wherein a first preset parameter is determined according to any one of the following, wherein the first preset parameter is a maximum number of layers of the PUSCH transmission at each time:

the first preset parameter is L 'max, where L' max is a maximum number of layers for the terminal device to support the second uplink transmission;

under the condition that the number M of SRS resource sets where one or more first SRS resources are located is 1, the first preset parameter is Lmax, where Lmax is the maximum number of layers that the terminal device supports first uplink transmission;

under the condition that the number M of SRS resource sets where one or more first SRS resources are located is larger than 1, the first preset parameter is Lmax/M;

the first preset parameter corresponding to the mth PUSCH transmission is Km, where Km is the number of SRS resources included in a target SRS resource set corresponding to the mth PUSCH transmission and is Km, the target SRS resource set is the SRS resource set where the target SRS resource corresponding to the mth PUSCH transmission is located, or the first preset parameter corresponding to the mth PUSCH transmission is the minimum value of Km and L' max, where Km is an integer greater than or equal to 1.

16. The method of claim 15, wherein determining a set of SRS resources in which one or more of the first SRS resources are located comprises:

and determining one or more SRS resource sets where the first SRS resources are located according to a second preset parameter.

17. The method of claim 16, wherein determining, according to a second preset parameter, one or more SRS resource sets in which the first SRS resource is located comprises:

if the second preset parameter is a first preset value, one or more first SRS resources belong to a first SRS resource set; and/or

If the second preset parameter is a second preset value, one or more of the first SRS resources belong to a plurality of second SRS resource sets.

18. The method of claim 17, wherein the first set of SRS resources is one of a plurality of the second sets of SRS resources, or wherein the first set of SRS resources is a set of SRS resources other than the plurality of the second sets of SRS resources.

19. The method of claim 17, wherein the second preset parameter is configured by higher layer signaling or indicated by the DCI.

20. A DCI sending method is applied to a network device, and comprises the following steps:

if the terminal equipment is configured to be in a non-codebook uplink transmission mode and the number of SRS resource sets configured for the non-codebook is N, determining a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal equipment, wherein the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1;

and sending Downlink Control Information (DCI) to the terminal equipment according to an SRS resource set where one or more SRS resources in the target SRS resource are located, and indicating one or more first SRS resources through the DCI, wherein the target SRS resource is one or more SRS resources in the one or more first SRS resources.

21. The method of claim 20, wherein channel state information reference signals, CSI-RS, associated with different sets of SRS resources are different.

22. The method of claim 20, wherein N of the SRS resource sets are associated with the same CSI-RS.

23. The method of claim 20, wherein indicating, by the DCI, a first SRS resource comprises: indicating one or more of the first SRS resources by an SRI field in the DCI.

24. The method of claim 23,

the DCI comprises a plurality of SRI domains;

indicating one or more first SRS resources by an SRI field in the DCI, including: and indicating the target SRS resource in the SRS resource set corresponding to the SRI in each SRI domain according to the corresponding relation between each SRI domain in the DCI and the N SRS resource sets.

25. The method of claim 23,

the DCI comprises an SRI domain;

indicating one or more first SRS resources by an SRI field in the DCI, including:

and acquiring a target SRS resource index corresponding to the SRS resource number of the target SRS resource according to the corresponding relation between the SRS resource index and the SRS resource number, wherein the SRS resource number is used for indicating the SRS resources in N SRS resource sets, and the SRS resources in the N SRS resource sets are numbered in advance in sequence.

26. The method of any of claims 20 to 25, wherein determining the target SRS resource corresponding to each of a plurality of PUSCH transmissions by the terminal device for the PUSCH transmission comprises:

if the number M of SRS resource sets where one or more first SRS resources are located is larger than 1, mapping one or more first SRS resources in the M SRS resource sets to the PUSCH transmission in a manner of alternate mapping or continuous mapping in turn to obtain target SRS resources corresponding to the PUSCH transmission in each time; alternatively, the first and second electrodes may be,

if the number M of SRS resource sets in which one or more first SRS resources are located is 1, determining that the target SRS resources corresponding to the PUSCH transmission are all one or more first SRS resources.

27. The method of claim 26, further comprising a PUSCH transmit power control signaling field in the DCI for indicating a second power value for a PUSCH transmission.

28. The method of claim 27,

the PUSCH transmission power control signaling domain is configured to indicate a second power value, where the second power value is determined according to a preset power control target value, where the preset power control target value is a first power value corresponding to one or more first SRS resources included in a preset SRS resource set, the preset SRS resource set is one of M SRS resource sets, or the preset power control target value is a maximum value or a minimum value of first power values configured for target SRS resources included in the M SRS resource sets; alternatively, the first and second electrodes may be,

the PUSCH transmits M second power values indicated by a power control signaling domain, wherein the ith second power value is determined according to a first power value of a target SRS resource configuration in the ith SRS resource set, and i is 1,2, …, M.

29. A terminal device, comprising:

a first obtaining module, configured to obtain downlink control information DCI;

a second obtaining module, configured to obtain one or more first SRS resources indicated by the DCI and determine an SRS resource set where the one or more first SRS resources are located, if the terminal device is configured in a non-codebook uplink transmission mode and N sounding reference signal SRS resource sets configured for non-codebooks are configured, where N is an integer greater than 1;

a determining module, configured to determine, according to an SRS resource set to which one or more first SRS resources belong, a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set among the one or more first SRS resources;

and the transmission module is used for carrying out each PUSCH transmission according to the target SRS resource corresponding to each PUSCH transmission.

30. A network device, comprising:

a determining module, configured to determine, if a terminal device is configured in a non-codebook uplink transmission mode and a set of SRS resources configured for a non-codebook is N, a target SRS resource corresponding to each PUSCH transmission in multiple PUSCH transmissions of the terminal device, where the target SRS resource corresponding to each PUSCH transmission is one or more SRS resources belonging to the same SRS resource set, and N is an integer greater than 1;

a sending module, configured to send downlink control information DCI to the terminal device according to an SRS resource set where one or more SRS resources in the target SRS resource are located, and indicate one or more first SRS resources through the DCI, where the target SRS resource is one or more SRS resources in the one or more first SRS resources.

31. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 19.

32. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method according to any of claims 20 to 28.

33. A computer-readable storage medium, having a computer program stored thereon, which when executed by a processor, implements:

the steps of the method of any one of claims 1 to 19; or

The steps of the method of any one of claims 20 to 28.

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