Uplink transmission control method and device

Abstract

This disclosure provides an uplink transmission control method and apparatus. The method includes: in a STxMP scenario where multiple uplink antenna panels simultaneously transmit a Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI), under a network scheduling of multiple transmit and receive points (TRP) single-frequency network (SFN) transmission mode, receiving transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by network devices; for codebook-based PUSCH transmission, determining the actual PTRS transmission parameters for PUSCH transmission based on the PTRS-related transmission configuration information and preset protocol rules; and transmitting PTRS according to the SFN transmission mode at the transmission timing (TO) of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. The scheme provided by this disclosure can achieve enhanced indication of PTRS under SFN transmission, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration in STxMP transmission, effectively improving the reliability and throughput of data transmission.

Description

Technical Field

[0001] This disclosure relates to the field of mobile communication technology, and in particular to an uplink transmission control method and apparatus. Background Technology

[0002] In new radio (NR) systems, multi-point cooperative transmission has become an important technical means to improve coverage at cell edges and provide better service quality within the service area. In Rel-18, it is desirable to achieve simultaneous cooperative transmission from multiple antenna panels to multiple transmission and reception points (TRPs) to enhance transmission reliability and throughput. Therefore, user equipment (UE) is required to have the ability to transmit multiple beams simultaneously. Multi-antenna panel / multi-TRP transmission can be scheduled based on a single physical downlink control channel (PDCCH).

[0003] To support a single-frequency network (SFN) scheme that allows simultaneous uplink transmission from multiple antenna panels / multiple TRPs based on a single DCI, it is necessary to address the SFN transmission and reception of phase-tracking reference signals (PTRS) used to support the Physical Downlink Shared Channel (PUSCH). Summary of the Invention

[0004] This disclosure proposes an uplink transmission control method and apparatus. Based on the proposed technical solution, mechanism, method, and apparatus, enhanced indication under SFN transmission in PTRS can be realized, thereby supporting the estimation of common phase error (CPE) of terminal multi-antenna panels under codebook (CB) configuration in the SFN scheme of simultaneous transmission from multiple panels (STxMP). This makes multi-point cooperative transmission more effective and effectively improves the reliability and throughput of data transmission.

[0005] A first aspect of this disclosure provides an uplink transmission control method executed by a user equipment (UE). The method includes: receiving transmission configuration information related to the phase tracking reference signal (PTRS) sent by a network device under a network scheduling mode of multiple transmit and receive points (TRP) single-frequency network (SFN) for simultaneous transmission of STxMP using multiple antenna panels (MTBs) and a physical uplink shared channel (PUSCH) based on a single downlink control information (DCI); wherein the transmission configuration information includes at least one of the following: maximum number of PTRS ports, a transmission precoding matrix indicator (TPMI) indication field, a demodulation reference signal (DMRS) port indication field, and a PTRS-DMRS association relationship indication field; and...

[0006] For codebook-based PUSCH transmission, the actual PTRS transmission parameters for PUSCH transmission are determined based on the PTRS-related transmission configuration information and preset protocol rules. PTRS is transmitted according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port.

[0007] In some embodiments of this disclosure, the DMRS port or port group corresponding to the TO of the PUSCH associated with different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

[0008] In some embodiments of this disclosure, transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in SFN transmission mode includes: transmitting the same number of PTRS port data on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in PUSCH multi-TRP SFN transmission mode, wherein each PTRS port data is the same and is transmitted through the same one or more DMRS ports.

[0009] In some embodiments of this disclosure, the actual PTRS transmission parameters for PUSCH transmission, determined based on transmission configuration information and preset protocol rules, are used to transmit PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in accordance with the SFN transmission mode. This includes: responding to the different number of PTRS ports actually corresponding to the precoder indicated by different TPMI indication fields, determining the actual PTRS transmission parameters according to the preset protocol rules based on the maximum number of PTRS ports and the association relationship between PTRS-DMRS ports indicated by the PTRS-DMRS association relationship indication field; and transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in accordance with the SFN transmission mode based on the actual PTRS transmission parameters.

[0010] In some embodiments of this disclosure, the preset protocol rules include any one of the following: the actual number of PTRS ports is the number of PTRS ports corresponding to a preset TPMI, the preset TPMI is one of the TPMIs associated with the TO of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs, and the determined actual number of PTRS ports and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the TO of the PUSCHs corresponding to different antenna panels / TRPs / beam TCI states / SRS resource sets; the actual number of PTRS ports is the TPMI pairs associated with the TO of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The minimum value among the corresponding PTRS port numbers is used, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set; the actual PTRS port number is the maximum value among the PTRS port numbers corresponding to the TPMI associated with the TO of each antenna panel / TRP / beam TCI state / SRS resource set / PUSCH, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set.

[0011] In some embodiments of this disclosure, the method further includes: receiving RRC signaling sent by a network device, wherein the RRC signaling includes the maximum number of PTRS ports, and the actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

[0012] In some embodiments of this disclosure, in response to the data transmission layer number RANK being equal to 1, the PTRS-DMRS association indication field is empty, and PTRS is actually transmitted on the TO of different PUSCHs using the indicated DMRS port.

[0013] In some embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual PTRS transmission in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating one of the first two DMRS ports or one of the DMRS ports sharing the same PTRS port with 1 bit; wherein, transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: determining the DMRS port used by the actual PTRS transmission port based on the PTRS-DMRS association indication field, and transmitting PTRS on the TO of different PUSCHs using the DMRS port respectively.

[0014] In some embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports used for PUSCH transmission being 2, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual PTRS transmission in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating only one of the first two DMRS ports or only one of the two DMRS ports sharing the same PTRS port with 1 bit; wherein, transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission method includes: determining the DMRS port corresponding to the first actual PTRS transmission port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the PTRS-DMRS association indication field, determining the DMRS port corresponding to the second actual PTRS transmission port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the default rule, and transmitting PTRS respectively.

[0015] In some embodiments of this disclosure, the DMRS port determined based on default rules is any one of the following: the other of the first two DMRS ports; any of the other DMRS ports when RANK>2; or any one of the two DMRS ports that share the same PTRS port.

[0016] In some embodiments of this disclosure, when determining the DMRS port associated with PTRS, the PTRS port associated with PTRS is determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is transmitted on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

[0017] In some embodiments of this disclosure, different SRS resource sets are associated with PUSCH transmissions on a multi-antenna panel, and the correspondence between different SRS resource sets and SRI / TPMI indication fields is indicated by the SRS resource set indication field.

[0018] A second aspect of this disclosure provides an uplink transmission control method, executed by a network device, the method comprising:

[0019] In the STxMP scenario where multiple uplink antenna panels transmit simultaneously, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) sends phase tracking reference signal (PTRS) related transmission configuration information to the UE under the network scheduling of multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode. This transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) indication field, DMRS port indication field, and PTRS-DMRS association indication field. For codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. PTRS reception is performed according to the SFN transmission mode at the transmission timing (TO) of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal (SRS) resource sets. The actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

[0020] In some embodiments of this disclosure, the DMRS port or port group corresponding to the TO of the PUSCH associated with different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

[0021] In some embodiments of this disclosure, PTRS reception on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets, respectively, according to the SFN transmission mode, includes:

[0022] In the PUSCH multi-TRP SFN transmission mode, the same number of PTRS port data are received on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. Each PTRS port data is the same and is received through the same one or more DMRS ports.

[0023] In some embodiments of this disclosure, based on the actual PTRS reception parameters for PUSCH transmission determined by transmission configuration information and preset protocol rules, PTRS reception on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets is performed according to the SFN transmission method, including:

[0024] In response to the different PTRS port numbers actually corresponding to the precoder indicated by different TPMI indication fields, SFN reception is performed on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the actual PTRS reception parameters determined by the preset protocol rules.

[0025] In some embodiments of this disclosure, the preset protocol rules include any one of the following: the actual number of PTRS ports is the number of PTRS ports corresponding to a preset TPMI, the preset TPMI is one of the TPMIs associated with the TO of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs, and the determined actual number of PTRS ports and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the TO of the PUSCHs corresponding to different antenna panels / TRPs / beam TCI states / SRS resource sets; the actual number of PTRS ports is the TPMI pairs associated with the TO of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The minimum value among the corresponding PTRS port numbers is used, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set; the actual PTRS port number is the maximum value among the PTRS port numbers corresponding to the TPMI associated with the TO of each antenna panel / TRP / beam TCI state / SRS resource set / PUSCH, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set.

[0026] In some embodiments of this disclosure, the method further includes: sending RRC signaling to the UE, wherein the RRC signaling includes the maximum number of PTRS ports, and the actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

[0027] In some embodiments of this disclosure, in response to the data transmission layer number RANK being equal to 1, the PTRS-DMRS association indication field is empty, and PTRS is actually received on the TO of different PUSCHs using the indicated DMRS port.

[0028] In some embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating one of the first two DMRS ports or one of the DMRS ports sharing the same PTRS port with 1 bit; wherein, receiving PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: determining the DMRS port used by the actual received PTRS port based on the PTRS-DMRS association indication field, and receiving PTRS on the TO of different PUSCHs respectively using the DMRS port.

[0029] In some embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 2, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating only one of the first two DMRS ports or only one of the two DMRS ports sharing the same PTRS port with 1 bit; wherein, receiving PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to SFN transmission mode includes: determining the DMRS port corresponding to the first actual received PTRS port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the PTRS-DMRS association indication field, determining the DMRS port corresponding to the second actual received PTRS port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on default rules, and receiving PTRS respectively.

[0030] In some embodiments of this disclosure, the DMRS port determined based on default rules is any one of the following: the other of the first two DMRS ports; any of the other DMRS ports when RANK>2; or any one of the two DMRS ports that share the same PTRS port.

[0031] In some embodiments of this disclosure, when determining the DMRS port associated with PTRS, the PTRS port associated with PTRS is determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is received on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

[0032] In some embodiments of this disclosure, different SRS resource sets are associated with PUSCH transmissions on a multi-antenna panel, and the correspondence between different SRS resource sets and SRI / TPMI domains is indicated by the SRS resource set indicator domain.

[0033] A third aspect of this disclosure provides an uplink transmission control apparatus configured in a UE. The apparatus includes a transceiver module, which is configured to: receive transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by a network device under the network scheduling of a Physical Uplink Shared Channel (PUSCH) based on a single Downlink Control Information (DCI) in an uplink multi-antenna panel simultaneous transmission STxMP scenario, wherein the transmission configuration information includes at least one of the following: a maximum number of PTRS ports, a Transmission Precoding Matrix Indicator (TPMI) indication field, a DMRS port indication field, and a PTRS-DMRS association indication field; and for the base... For PUSCH transmission in the codebook, PTRS is transmitted on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode. Based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS transmission parameters used for PUSCH transmission are determined. PTRS is transmitted on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets according to the SFN transmission mode. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port.

[0034] A fourth aspect of this disclosure provides an uplink transmission control apparatus configured in a network device. The apparatus includes a transceiver module, which is configured to: transmit transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE in a scenario where multiple uplink antenna panels simultaneously transmit STxMP signals and the Physical Uplink Shared Channel (PUSCH) is scheduled based on a single downlink control information (DCI), under a network scheduling mode of multiple transmit and receive points (TRP) single-frequency network (SFN). The transmission configuration information includes at least one of the following: the maximum number of PTRS ports, the Transmission Precoding Matrix Indicator (TPMI) indication field, the DMRS port indication field, and the PTRS-DMRS association indication field. For codebook-based PUSCH transmission, based on the transmission configuration information and preset protocol rules, SFN reception is performed on the TO of the PUSCH corresponding to different antenna panels, where the actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

[0035] A fifth aspect embodiment of this disclosure provides a communication device, including: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, configured to control the wireless signal transmission and reception of the transceiver by executing computer-executable instructions on the memory, and capable of implementing the uplink transmission control described in the first aspect embodiment or the second aspect embodiment.

[0036] The sixth embodiment of this disclosure proposes a computer storage medium storing computer-executable instructions; after being executed by a processor, the computer-executable instructions can realize the uplink transmission control described in the first or second aspect embodiment.

[0037] This disclosure provides an uplink transmission control method and apparatus. In an uplink multi-antenna panel simultaneous STxMP transmission scenario, when the network configures PUSCH as a multi-TRP SFN transmission mode, the UE receives PTRS-related transmission configuration information sent by the network device. The transmission configuration information includes two or more sets of DCI information indication fields for multi-TRP SFN transmission. Each set of DCI information indication fields includes at least the maximum number of PTRS ports, a TPMI indication field, and a PTRS-DMRS association indication field. For codebook-based PUSCH transmission, the actual PTRS transmission parameters for PUSCH transmission are determined based on the PTRS-related transmission configuration information and preset protocol rules. PTRS is transmitted according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRPs / beam TCI states / detection reference signal SRS resource sets. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port. The scheme provided in this disclosure can realize enhanced indication under SFN transmission of PTRS, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration of SFN scheme under STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0038] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0039] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0040] Figure 1 This is a schematic diagram illustrating a multi-TRP transmission implementation based on a single DCI according to an embodiment of this disclosure;

[0041] Figure 2 This is a schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure;

[0042] Figure 3 This is a schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure;

[0043] Figure 4 This is a schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure;

[0044] Figure 5 This is a schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure;

[0045] Figure 6This is a block diagram of an uplink transmission control device according to an embodiment of the present disclosure;

[0046] Figure 7 This is a block diagram of an uplink transmission control device according to an embodiment of the present disclosure;

[0047] Figure 8 This is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure;

[0048] Figure 9 This is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. Detailed Implementation

[0049] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting this disclosure.

[0050] In 5G / NR Rel-16, operations related to multiple TRPs were introduced primarily for PDSCH transmission. These operations can include single DCI operations and multiple DCI operations. Using a single DCI (Single DCI, S-DCI), a single PDCCH can be used to schedule multiple PDSCH transmissions from multiple TRPs.

[0051] Figure 1 This is a schematic diagram illustrating a multi-TRP transmission implementation based on a single DCI according to an embodiment of this disclosure. As an example, two TRPs (TRP1 and TRP2) are provided to communicate with a UE having multiple antenna panels (Panel 1 and Panel 2). Figure 1 As shown, for a single DCI operation, the transmission can be scheduled based on a single DCI carried by a PDCCH channel, or it can be scheduled separately based on different DCIs carried by different PDCCH channels.

[0052] As mentioned above, operations related to multi-TRP can include single-DCI operations and multi-DCI operations. On the other hand, operations related to multi-TRP can include multi-TRP operations for downlink (e.g., PDSCH) and multi-TRP operations for uplink (e.g., PUSCH). In 5G / NR Rel-16, multi-TRP operations were mainly introduced for PDSCH transmission, but multi-TRP operations for PUSCH transmission were not defined. In the R17 standard, in multi-TRP (M-TRP) scenarios, uplink enhancements support the retransmission of PUSCH / PUCCH channels. This can be achieved by using time-division multiplexing (TDM) to transmit uplink channels to different base station TRPs in different uplink beam directions.

[0053] For example, a multi-panel terminal implementation typically involves configuring multiple physical panels. These panels may have varying capabilities, such as different numbers of SRS ports, and each panel may support different maximum data transmission layers. For instance, one panel might support a maximum of layer 2 transmission, while another supports a maximum of layer 4. The network scheduler determines whether the terminal is suitable for simultaneous uplink transmission across multiple panels. If the terminal is suitable for simultaneous uplink transmission across multiple panels and is scheduled accordingly, the network will directly or indirectly indicate relevant transmission parameters, including the terminal's specific beamforming information, the number of data layers used for transmission, the DMRS port allocation, and precoding indication information. Therefore, it is necessary to determine the PTRS port configuration and specific indication under S-DCI scheduling.

[0054] In Release 18 (R18), the uplink simultaneous transmission scheme that may be supported is uplink synchronous transmission for multi-antenna panel / receive and transmit point TRP / transmission configuration indicator TCI. Currently, the bottleneck of communication systems remains uplink transmission rate and coverage. Therefore, the system enhancement direction for the R18 standard mainly considers using multiple panel terminals for simultaneous uplink transmission in Multi-TRP scenarios to improve uplink rate and further enhance transmission reliability. Transmission can be scheduled based on a single DCI carried by a PDCCH channel, or it can be scheduled separately based on different DCIs carried by different PDCCHs. Cooperative transmission of a Transport Block (TB) based on a single DCI (S-DCI) PUSCH transmission includes various transmission schemes. Currently, the synchronous transmission schemes considered mainly involve channel transmission without a panel based on SDM or FDM multiplexing. A brief explanation of each transmission scheme is provided below:

[0055] One approach is the Space Division Multiplexing (SDM) approach: A TB of the PUSCH transmits to two different TRPs on the same time-frequency resources through the corresponding demodulation reference signal (DMRS) ports or port combinations allocated on different panels. Different Panels / TRPs / Transmission Occasions (TOs) are associated with different TCI states, i.e., with different beams. Based on this, the SDM scheme is further divided into two schemes: SDM-A and SDM-B. In the SDM-A scheme, different parts of a TB of a PUSCH are transmitted to two different TRPs on the same time-frequency resources through their respective DMRS ports or port combinations allocated on different panels. Different panels / TRPs / TOs are associated with different TCI states. In the SDM-B scheme, duplicates of the same TB of different RV versions of the PUSCH are transmitted to two different TRPs on the same time-frequency resources through their respective DMRS ports or port combinations allocated on different panels. Different panels / TRPs / TOs are associated with different TCI states.

[0056] Another approach is Frequency Division Multiplexing (FDM): A TB of a PUSCH is transmitted to two different TRPs on non-overlapping frequency resources in the same time domain through the same DMRS ports or port combinations allocated on different panels. Different panels / TRPs / TOs are associated with different TCI states. Based on this, the FDM scheme is further divided into FDM-A and FDM-B schemes. In FDM-A, different parts of a TB of a PUSCH are transmitted to two different TRPs on non-overlapping frequency resources in the same time domain through the same DMRS ports or port combinations allocated on different panels. Different panels / TRPs / TOs are associated with different TCI states. In FDM-B, duplicates of the same TB corresponding to different RV versions of the PUSCH are transmitted to two different TRPs on non-overlapping frequency resources in the same time domain through the same DMRS ports or port combinations allocated on different panels. Different panels / TRPs / TOs are associated with different TCI states.

[0057] Another approach is the Spatial Multiplexing (SFN) scheme: a TB of the PUSCH transmits to two different TRPs on the same time-frequency resources through the same DMRS port or port combination allocated on different panels. Different panels / TRPs / TOs are associated with different TCI states. It should be understood that... Figure 1 The exemplary scheme shown is a multi-TRP transmission using SDM transmission, which uses different antenna ports to transmit different data layers. Similarly, for the SFN transmission scheme, the same antenna port can be used to transmit the same data layer, which will not be elaborated further here.

[0058] Simultaneous uplink PUSCH transmission based on multiple panels typically supports one or more of the above schemes.

[0059] In the uplink enhancements of R18, consider how to use multi-panel / multi-TRP uplink simultaneous transmission to support higher throughput and more reliable transmission performance.

[0060] To support the SFN scheme for simultaneous uplink transmission across multiple panels based on S-DCI, the transmission schemes for DMRS and PTRS also need to be determined. For DMRS, the current primary consideration is the SFN transmission scheme, which uses the same DMRS port for transmission across different panels. For PTRS, the impact of different SFN and non-SFN transmission schemes also needs to be considered.

[0061] In the current protocol, when supporting PTRS transmission based on codebook-based PUSCH, the same PTRS port may be associated with the same group of DMRS ports corresponding to different SRS resource sets. However, the actual number of PTRS ports corresponding to the TPMI indicator fields associated with different SRS resource sets may not be consistent. This results in the actual transmitted PTRS not being SFN transmissions. Therefore, it is necessary to consider how to solve the SFN transmission problem for PTRS supporting CBPUSCH.

[0062] This disclosure provides a technical solution that enables enhanced indication under SFN transmission of PTRS, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration of SFN scheme under STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0063] The uplink transmission control method and apparatus provided in this disclosure will now be described in detail with reference to the accompanying drawings.

[0064] Figure 2 A schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure is shown. Figure 2As shown, the method can be executed by the UE and may include the following steps.

[0065] S201, In the STxMP scenario where multiple uplink antenna panels simultaneously transmit the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI), under the network scheduling of multiple transmit and receive points (TRP) single-frequency network (SFN) transmission mode, the transmission configuration information related to the phase tracking reference signal (PTRS) sent by the network device is received. The transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) indication field, DMRS port indication field, and PTRS-DMRS association relationship indication field.

[0066] In this embodiment, the transmission configuration information may dynamically include two or more sets of DCI information indication fields for multi-TRP SFN transmission. Each set of information indication fields includes at least the maximum number of PTRS ports, the Transmission Precoding Matrix Indicator (TPMI) indication field, and the association indication field between the PTRS and the Demodulation Reference Signal (DMRS). However, this disclosure is not limited to this, and each set of information indication fields may also include other information indication fields.

[0067] In some embodiments, the TCI beam indication information in a single DCI indicates two or more beams, and the transmission configuration information may include two or more TPMI indication fields, wherein each TPMI indication field is used to indicate the precoding matrix of the PUSCH transmission in the corresponding beam direction. In this case, the single DCI is used for multi-antenna panel multi-TRP transmission, and the multi-antenna panel multi-TRP transmission is a codebook-based PUSCH transmission. For each PUSCH transmission in the beam direction, a TPMI indication field indicates the precoding matrix used in that PUSCH transmission.

[0068] In some embodiments, the TCI beam indication information in a single DCI indicates two or more beams, and the transmission configuration information may include two or more SRI indication fields, wherein each SRI indication field is used for one or more SRS resources carrying precoded information in the SRS resource set allocated to the PUSCH transmission in the corresponding beam direction. In this case, the single DCI is used for multi-antenna panel multi-TRP transmission, and the multi-antenna panel multi-TRP transmission is a non-codebook-based PUSCH transmission. For each beam direction PUSCH transmission, one SRI indication field indicates one or more SRS resources selected from the SRS resource set allocated to that PUSCH transmission. For codebook-based PUSCH transmission, the SRI indication selects a corresponding spatial filter for the PUSCH transmission; that is, the PUSCH uses the spatial relationship information (TCI or Spatial Relation Info) corresponding to the SRS resources selected by the SRI as the spatial filter used for transmission. In non-codebook-based PUSCH transmission, multiple single-port SRS resources in an SRS resource set carry PUSCH precoding information calculated and suggested by the terminal. Each SRS resource carries precoding information used by the corresponding layer of data. The base station schedules and selects precoding information reported by the terminal through measurement and selects precoding information through SRI indication, that is, selects one or more SRS resources in the corresponding SRS resource set. After receiving the SRI indication from the base station, the terminal uses the precoding corresponding to one or more SRS resources as the precoding used for PUSCH transmission.

[0069] S202, for codebook-based PUSCH transmission, the actual PTRS transmission parameters for PUSCH transmission are determined based on the PTRS-related transmission configuration information and preset protocol rules. PTRS is transmitted according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port.

[0070] In the embodiments of this disclosure, the UE can determine the actual transmission parameters of PTRS based on the maximum number of PTRS ports and the association relationship between PTRS and DMRS ports, according to preset protocol rules. These parameters include, but are not limited to, the actual number of PTRS ports and the DMRS port corresponding to the actual PTRS transmission.

[0071] In the embodiments of this disclosure, the maximum number of PTRS ports can be configured by higher layers, for example, through RRC signaling, and this is not limited in the embodiments of this disclosure.

[0072] According to the uplink transmission control method of this disclosure, in the scenario of simultaneous STxMP transmission across multiple uplink antenna panels, when the network configures PUSCH as a multi-TRP SFN transmission mode, the UE receives PTRS-related transmission configuration information sent by the network device. The transmission configuration information includes two or more sets of DCI information indication fields for multi-TRP SFN transmission. Each set of DCI information indication fields includes at least the maximum number of PTRS ports, a TPMI indication field, and a PTRS-DMRS association indication field. For codebook-based PUSCH transmission, the actual PTRS transmission parameters for PUSCH transmission are determined based on the PTRS-related transmission configuration information and preset protocol rules. PTRS is transmitted according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRPs / beam TCI states / detection reference signal SRS resource sets. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port. The scheme provided in this disclosure can realize enhanced indication under SFN transmission of PTRS, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration of SFN scheme under STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0073] Figure 3 A schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure is shown. Figure 3 As shown, the method can be executed by the UE and may include the following steps.

[0074] S301, In the STxMP scenario where multiple uplink antenna panels simultaneously transmit the Physical Uplink Shared Channel (PUSCH) based on a single downlink control information (DCI) and the network is scheduled as a multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode, the PUSCH receives transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by the network device. The transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) indication field, DMRS port indication field, and PTRS-DMRS association relationship indication field.

[0075] In some embodiments of this disclosure, whether PTRS is transmitted uplink is also controlled by configuring higher-layer parameters. The UE can obtain the maximum number of PTRS ports by receiving RRC signaling sent by the network device. For example, the RRC configuration sets the maximum number of ports for PTRS to maxNrofPorts = 1 or 2.

[0076] If the higher-layer parameter DMRS-UplinkConfig does not configure phaseTrackingRS for the UE, then the uplink UE will not transmit PTRS. If the higher-layer parameter UL-PTRS-present is configured for the UE, and the number of PTRS ports is 1 or 2, then the PTRS-DMRS association indication field in UL DCI0_1 / 0_2 indicates that a DMRS port is associated with this PTRS port. The maximum number of PTRS ports is obtained by configuring maxNrofPorts to 'n2' in the higher-layer parameter PTRS-UplinkConfig. If the indicated maximum number of PTRS ports is 2, then the network side divides the DMRS ports corresponding to the SRS resources into two groups and suggests associations for each group.

[0077] In some embodiments of this disclosure, the transmission configuration information includes a DMRS port indication field. The DMRS field of the DCI can indicate the DMRS port information used for PUSCH transmission in each beam direction. For example, if the indicated DMRS port is {0,1} and the corresponding transmission scheme is FDM or SFN transmission, then the DMRS port for PUSCH transmission in each beam direction uses port {0,1}, i.e., TRI is 2. For example, if the indicated DMRS port is {0,1} and the corresponding transmission scheme is SDM transmission, then the DMRS port corresponding to PUSCH transmission in each TCI beam direction can also be determined according to predefined rules. A possible port allocation is that PUSCH transmission in the first beam direction uses DMRS port {0} with a corresponding TRI of 1, and PUSCH transmission in the second beam direction uses DMRS port {1} with a corresponding TRI of 1.

[0078] In this disclosure, the DMRS port or port group corresponding to the TO of the PUSCH associated with different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

[0079] In other words, for CB PUSCH, the DMRS port / port group indicated by the DMRS port indication field associated with different SRS resource sets is the same, and TPMI1 / TPMI2 are respectively associated with the first / second SRS resource sets corresponding to different panels / TRP / TCIs. That is, the correspondence between TPMI and SRS resource sets can be that TPMI1 corresponds to the first SRS resource set, or TPMI1 corresponds to the second SRS resource set. In some embodiments of this disclosure, different SRS resource sets are associated with PUSCH transmission on a multi-antenna panel, and the correspondence between different SRS resource sets and the SRI / TPMI indication fields is indicated by the SRS resource set indicator field.

[0080] The SRS resource set indicator field is used to dynamically indicate STRP and MTRP transmission scheduling.

[0081] In a single TRP, the first SRI / TPMI field can be associated with any SRS resource. Specifically, the SRS resourceet indicator field uses different code points to indicate the dynamic switching between STRP and MTRP, as shown in Table 1 below.

[0082] Table 1

[0083]

[0084] In other words, different SRS resource sets can be associated with PUSCH transmissions on multi-panel / TRP / beam TCI states. The correspondence between SRS resource sets and TPMI / SRI fields is defined by the SRS resource set indicator. In Release 17, the protocol currently defines the first TPMI field as corresponding to the first SRS resource set, and the second TPMI field as corresponding to the second SRS resource set. In Release 18, the specific correspondence can be either the first TPMI field corresponding to the first SRS resource set, or the first TPMI field corresponding to the second SRS resource set.

[0085] In embodiments of this disclosure, a codebook pre-configuration table can be determined based on the codebook parameter configuration of PUSCH transmissions in the corresponding beam directions of the multi-panel and the corresponding codebook subset restrictions for PUSCH transmissions in the corresponding beam directions. The number of bits occupied by each TPMI indication field is determined based on the number of available TPMI combinations in the codebook pre-configuration table.

[0086] In this embodiment, the TCI beam indication information carried in a single DCI sent by the network device to the UE indicates two or more beams, and the transmission configuration information includes two or more TPMI indication fields. This single DCI is used for multi-antenna panel multi-TRP transmission, and this multi-antenna panel multi-TRP transmission is a codebook-based PUSCH transmission. Each codebook-based PUSCH transmission in each beam direction corresponds to one TPMI indication field; that is, one TPMI indication field can indicate the precoding matrix of a codebook-based PUSCH transmission in one beam direction. The network device can determine the codebook parameter configuration and codebook subset restrictions for PUSCH transmission in each beam direction, thereby determining the codebook pre-configuration table for PUSCH transmission in each beam direction. Each TPMI indication field included in the transmission configuration information carried in the DCI sent by the network device to the UE can carry an index, which is used to simultaneously indicate TPMI and TRI according to the codebook pre-configuration table. The number of bits occupied by each TPMI indication field is determined according to the number of available TPMI combinations in the corresponding codebook pre-configuration table.

[0087] The codebook parameter configuration allows for settings such as the number of antenna ports, whether to use transform precoding, and maxRank. The codebook subset restrictions include three types: fullyAndPartialAndNonCoherent; partiallyAndNonCoherent; and nonCoherent.

[0088] Other interpretations of step S201 in the above embodiments also apply to step S301 in this embodiment, and the principle is the same, so they will not be repeated here.

[0089] S302, for codebook-based PUSCH transmission, in the PUSCH multi-TRP SFN transmission mode, based on the transmission configuration information and the preset protocol rules, the actual PTRS transmission parameters for PUSCH transmission are determined, and the same number of PTRS port data are transmitted on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets.

[0090] In other words, in the scheme disclosed herein, the PTRS port and DMRS port correspondence corresponding to the TPMI domain that determines the number of PTRS ports can be used and applied to the PTRS transmission of two panels, that is, the corresponding PTRS is transmitted on the same DMRS port.

[0091] In some embodiments of this disclosure, the actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual PTRS transmission. The actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

[0092] In some embodiments of this disclosure, each PTRS port has identical data and is transmitted through the same one or more DMRS ports. In other words, the DMRS port indication fields of different sounding reference signal (SRS) resource sets corresponding to different antenna panels indicate the same DMRS port or port group to achieve multi-TRP SFN transmission.

[0093] In some optional embodiments, the actual PTRS transmission parameters for PUSCH transmission determined based on the transmission configuration information and preset protocol rules, and the PTRS transmission on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode, specifically includes: responding to the different number of PTRS ports actually corresponding to the precoder indicated by different TPMI indication fields, determining the actual PTRS transmission parameters according to the preset protocol rules based on the maximum number of PTRS ports and the association relationship between PTRS-DMRS ports indicated by the PTRS-DMRS association relationship indication field; and transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode based on the actual PTRS transmission parameters.

[0094] In other words, when the number of PTRS ports actually corresponding to the precoder indicated by TPMI1 is N1 and the number of PTRS ports actually corresponding to the precoder indicated by TPMI2 is N2, the actual number of PTRS ports N corresponding to PUSCH is determined by the preset protocol rules.

[0095] The preset protocol rules are described in detail below. In some optional embodiments of this disclosure, the preset protocol rules include any one of the following:

[0096] In one optional approach, the actual number of PTRS ports is the number of PTRS ports corresponding to a preset TPMI. The preset TPMI is one of the TPMIs associated with the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to the TOs of the corresponding PUSCHs of different antenna panels / TRPs / beam TCI states / SRS resource sets. In other words, N is determined by the number of PTRS ports corresponding to a fixed TPMI field, such as the TPMI1 indication field, where N equals N1, and the determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to different panels.

[0097] In other words, if the actual number of PTRS ports determined by the above rules is N, and each PTRS port corresponds to a specific DMRS port, then the actual number of ports to be transmitted on the TO of each PUSCH is N, and the DMRS ports corresponding to each port are the same, thereby realizing the SFN transmission of PTRS.

[0098] The preset TPMI is one of the TPMIs associated with different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCH TOs. Which specific TPMI is active can be specified through predefinition or network configuration. It should be understood that in some optional embodiments of this disclosure, the TPMIs associated with different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCH TOs are different, and this will not be elaborated upon in this disclosure.

[0099] In another alternative approach, the actual number of PTRS ports is the minimum value among the PTRS port numbers associated with the TPMIs of each different antenna panel / TRP / beam TCI state / SRS resource set / PUSCH TO. The determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to the TOs of the PUSCHs corresponding to each different antenna panel / TRP / beam TCI state / SRS resource set. In other words, N equals the smaller value of the PTRS port numbers corresponding to TPMI1 / TPMI2, i.e., min{N1,N2}, and the determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to different panels.

[0100] In another alternative approach, the actual number of PTRS ports is the maximum value among the PTRS port numbers associated with the TPMIs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to the TOs of the PUSCHs corresponding to different antenna panels / TRPs / beam TCI states / SRS resource sets. In other words, N equals the larger of the PTRS port numbers corresponding to TPMI1 / TPMI2, i.e., max{N1,N2}, and the determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to different panels.

[0101] This disclosure does not limit other methods besides the options described above.

[0102] The following details the indications for the association between PTRS and DMRS. First, the contents of the relevant protocols are described to facilitate understanding of the indications for the association between PTRS and DMRS as defined in this disclosure.

[0103] For PDSCH / PUSCH channels, the data layer for data transmission corresponds to the DMRS port used for demodulation. The design of the data channel (PDSCH / PUSCH) DMRS in NR systems mainly includes the design of front-load DMRS and additional DMRS. For low-mobility scenarios, front-load DMRS can achieve channel estimation performance that meets demodulation requirements with lower overhead. Depending on the number of orthogonal ports used for transmission, front-load DMRS can be configured with a maximum of two OFDM symbols. However, NR systems consider mobility speeds up to 500 km / h. Faced with such a large dynamic range of mobility, in addition to front-load DMRS, more DMRS symbols need to be inserted during the scheduling duration in medium / high-speed scenarios to meet the estimation accuracy requirements for channel time-varying characteristics. The relevant protocols define DMRS port allocation tables with different uplink parameter configurations. For different DMRS types (1 or 2), symbol lengths, data layers, and whether or not transform precoding is used (for example, dmrs-Type=1, maxLength=1, rank=1, transform precoder is disabled means DMRS type 1, single symbol, single stream transmission, no transform precoding), DMRS port allocation can be performed based on Tables 7.3.1.1.2-8 to 7.3.1.1.2-23, as shown in Tables 2 to 17 below, which will not be elaborated further here.

[0104] Table 2

[0105] (Table 7.3.1.1.2-8: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=1, rank=1)

[0106] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 1 0 1 1 1 2 2 0 3 2 1 4 2 2 5 2 3 6-7 Reserved Reserved

[0107] Table 3

[0108] (Table 7.3.1.1.2-9: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=1, rank=2)

[0109] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 1 0,1 1 2 0,1 2 2 2,3 3 2 0,2 4-7 Reserved Reserved

[0110] Table 4

[0111] (Table 7.3.1.1.2-10: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=1, rank=3)

[0112] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-2 2-7 Reserved Reserved

[0113] Table 5

[0114] (Table 7.3.1.1.2-11: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=1, rank=4)

[0115] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-3 2-7 Reserved Reserved

[0116] Table 6

[0117] (Table 7.3.1.1.2-12: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=2, rank=1)

[0118] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front-load symbols 0 1 0 1 1 1 1 1 2 2 0 1 3 2 1 1 4 2 2 1 5 2 3 1 6 2 0 2 7 2 1 2 8 2 2 2 9 2 3 2 10 2 4 2 11 2 5 2 12 2 6 2 13 2 7 2 14-15 Reserved Reserved Reserved

[0119] Table 7

[0120] (Table 7.3.1.1.2-13: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=2, rank=2)

[0121] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front-load symbols 0 1 0,1 1 1 2 0,1 1 2 2 2,3 1 3 2 0,2 1 4 2 0,1 2 5 2 2,3 2 6 2 4,5 2 7 2 6,7 2 8 2 0,4 2 9 2 2,6 2 10-15 Reserved Reserved Reserved

[0122] Table 8

[0123] (Table 7.3.1.1.2-14: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=2, rank=3)

[0124] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front-load symbols 0 2 0-2 1 1 2 0,1,4 2 2 2 2,3,6 2 3-15 Reserved Reserved Reserved

[0125] Table 9

[0126] (Table 7.3.1.1.2-15: Antenna port(s), transform precoder is disabled, dmrs-Type=1, maxLength=2, rank=4)

[0127] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front-load symbols 0 2 0-3 1 1 2 0,1,4,5 2 2 2 2,3,6,7 2 3 2 0,2,4,6 2 4-15 Reserved Reserved Reserved

[0128] Table 10

[0129] (Table 7.3.1.1.2-16: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=1, rank=1)

[0130]

[0131]

[0132] Table 11

[0133] (Table 7.3.1.1.2-17: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=1, rank=2)

[0134] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 1 0,1 1 2 0,1 2 2 2,3 3 3 0,1 4 3 2,3 5 3 4,5 6 2 0,2 7-15 Reserved Reserved

[0135] Table 12

[0136] (Table 7.3.1.1.2-18: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=1, rank=3)

[0137] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-2 1 3 0-2 2 3 3-5 3-15 Reserved Reserved

[0138] Table 13

[0139] (Table 7.3.1.1.2-19: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=1, rank=4)

[0140] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-3 1 3 0-3 2-15 Reserved Reserved

[0141] Table 14

[0142] (Table 7.3.1.1.2-20: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=2, rank=1)

[0143]

[0144]

[0145] Table 15

[0146] (Table 7.3.1.1.2-21: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=2, rank=2)

[0147] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front - load symbols 0 1 0,1 1 1 2 0,1 1 2 2 2,3 1 3 3 0,1 1 4 3 2,3 1 5 3 4,5 1 6 2 0,2 1 7 3 0,1 2 8 3 2,3 2 9 3 4,5 2 10 3 6,7 2 11 3 8,9 2 12 3 10,11 2 13 1 0,1 2 14 1 6,7 2 15 2 0,1 2 16 2 2,3 2 17 2 6,7 2 18 2 8,9 2 19-31 Reserved Reserved Reserved

[0148] Table 16

[0149] (Table 7.3.1.1.2-22: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=2, rank=3)

[0150] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front - load symbols 0 2 0-2 1 1 3 0-2 1 2 3 3-5 1 3 3 0,1,6 2 4 3 2,3,8 2 5 3 4,5,10 2 6-31 Reserved Reserved Reserved

[0151] Table 17

[0152] (Table 7.3.1.1.2-23: Antenna port(s), transform precoder is disabled, dmrs-Type=2, maxLength=2, rank=4)

[0153] Value Number of DMRS CDM group(s) without data DMRS port(s) Number of front - load symbols 0 2 0-3 1 1 3 0-3 1 2 3 0,1,6,7 2 3 3 2,3,8,9 2 4 3 4,5,10,11 2 5-31 Reserved Reserved Reserved

[0154] The port characteristics of PTRS and DMRS are related. When there are multiple DMRS ports, it is necessary to specify which DMRS ports or ports have the same port parameters as a certain PTRS port. That is, the association between PTRS and DMRS ports is specified through the association indication field of PTRS and DMRS.

[0155] The number of PTRS ports is related to the number of phase noise sources. When multiple independent phase noise sources exist, each phase noise source requires a PTRS port for phase estimation. Therefore, NR15 / 16 supports one downlink PTRS port and two uplink PTRS ports. Whether PTRS is transmitted in the uplink can be controlled by configuring higher-layer parameters. If the higher-layer parameter DMRS-UplinkConfig does not configure phaseTrackingRS for the UE, then the uplink UE will not transmit PTRS. If the higher layer configures the parameter UL-PTRS-present for the UE, and the number of PTRS ports is 1 or 2, then the PTRS-DMRS association indication field in UL DCI0_1 / 0_2 indicates that a DMRS port is associated with this PTRS port.

[0156] The specific relationships are shown in the table below:

[0157] Table 18 below shows the single-port case of PTRS (see Table 7.3.1.1.2-25 in the protocol: PTRS-DMRS association for UL PTRS port 0).

[0158] Table 18

[0159]

[0160] R17 introduced the definition of PTRS-DMRS association in different TRP directions corresponding to the data layer number RANK=2, as shown in Table 19 below (see Table 7.3.1.1.2-25A in the protocol: PTRS-DMRS association for UL PTRS port 0 or for the actual UL PTRS port). The association between PTRS and DMRS in different directions is indicated by the least significant bit (LSB) and the most significant bit (MSB).

[0161] Table 19

[0162]

[0163] Table 20 below shows the situation for two PTRS ports (see Table 7.3.1.1.2-26: PTRS-DMRS association for UL PTRS ports 0 and 1).

[0164] Table 20

[0165]

[0166] In some optional embodiments of this disclosure, in response to the data layer number RANK equal to 1, the PTRS-DMRS association indication field is empty. PTRS is actually transmitted on different PUSCH TOs corresponding to single ports and uses the indicated DMRS port for PTRS transmission. In other words, DMRS has more than one data layer during transmission. When RANK = 1, the association between PTRS and DMRS is determined, and PTRS is directly transmitted on DRMS, requiring no indication.

[0167] In some optional embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual PTRS transmission in one of the following ways:

[0168] The two associated DMRS ports are indicated by 2 bits (this method can be used for cases where TPMI corresponds to fully coherent codewords);

[0169] Use 1 bit to indicate one of the first two DMRS ports or one of the DMRS ports that share the same PTRS port (this method can be used for cases where the corresponding coherent codeword of TPMI is used);

[0170] Accordingly, the UE can determine the DMRS port used to actually transmit PTRS based on the PTRS-DMRS association indication field, and transmit PTRS using the DMRS port on the TO of different PUSCHs respectively.

[0171] In other words, when RANK>=2 and the number of ports is 1, 2 bits can be used to indicate a specific DMRS port based on Table 2 (Table 7.3.1.1.2-25); or 1 bit can be used to indicate one of the first 2 DMRS ports or one of the DMRS ports sharing the same PTRS port.

[0172] In some optional embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports used for PUSCH transmission being 2, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual PTRS transmission in one of the following ways:

[0173] The two associated DMRS ports are indicated by 2 bits (this method can be used for cases where TPMI corresponds to fully coherent codewords);

[0174] One bit can be used to indicate only one of the first two DMRS ports or only one of the two DMRS ports that share the same PTRS port (this method can be used for cases where the TPMI corresponds to a coherent codeword).

[0175] Accordingly, the UE can determine the DMRS port corresponding to the first actual PTRS port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the PTRS-DMRS association indication field, and determine the DMRS port corresponding to the second actual PTRS port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the default rules, and then transmit PTRS respectively.

[0176] Among them, PTRS port 0 is the actual PTRS port 0, the first PTRS port, and PTRS port 1 is the actual PTRS port 1, the second actual PTRS port.

[0177] The DMRS port determined based on the default rules is any one of the following:

[0178] The other of the first two DMRS ports;

[0179] When RANK>2, any of the other DMRS ports;

[0180] Either of two DMRS ports that share the same PTRS port.

[0181] In other words, when RANK>=2 and the number of ports is 2, 2 bits can be used to indicate a specific DMRS port based on Table 4 (Table 7.3.1.1.2-26); or 1 bit can be used to indicate only one of the first two DMRS ports, or only one of the two DMRS ports that share the same PTRS port; the other PTRS port is sent according to the default rules, such as the other of the first two DMRS ports, or the first of the other DMRS ports when RANK>2, or the first of the two DMRS ports that always share the same PTRS port, which is not limited in this disclosure.

[0182] In some embodiments of this disclosure, when determining the DMRS port associated with PTRS, the PTRS port associated with PTRS is determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is transmitted on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

[0183] In some embodiments of this disclosure, the maximum number of PT-RS ports is obtained by configuring maxNrofPorts in the higher-layer parameter PTRS-UplinkConfig to 'n2'. If the indicated maximum number of PTRS ports is 2, then the network side divides the DMRS ports corresponding to the SRS resources into two groups, and proposes association relationships based on the above rules.

[0184] In the embodiments of this disclosure, PDSCH was enhanced during the R16 research phase due to the application of downlink multi-TRP (transmitter-receiver point) / antenna panel multi-point cooperative transmission technology. Since data transmission involves scheduling feedback between uplink and downlink channels, enhancing only the downlink data channel in URLLC research cannot guarantee overall service performance. In the R17 research, enhancements were further made to the downlink control channel PDCCH and the uplink control channel PUCCH and data channel PUSCH.

[0185] Phase noise (PN) is caused by the local oscillator disrupting the orthogonality of subcarriers in an OFDM system. This leads to common phase error (CPE), causing the modulation constellation to rotate at a fixed angle and inter-carrier interference (ICI), resulting in scattering of constellation points. This is more pronounced at high frequencies. Because CPE has a greater impact, compensation for CPE is the primary consideration in NR. In NR, a PTRS signal is designed for CPE estimation. To enhance signal coverage and improve signal quality, PTRS is configured by the network to the terminal as a UE-specific reference signal. PTRS is used to track phase noise introduced by the local oscillator in the gNB and UE. PTRS can be seen as an extension of DMRS; they are closely related, such as using the same precoding, port association, orthogonal sequence generation, and QCL relationships.

[0186] The number of ports in a PTRS is related to the number of phase noise sources. When there are multiple independent phase noise sources, each phase noise source requires a PTRS port for phase estimation.

[0187] In other words, for codebook-based scenarios, the table above can be used to determine which DMRS corresponds to which layer in the codebook indicated in the TPMI. The DMRS port indication field of the SRS resource set is used to indicate the set of DMRS ports used for demodulation in PUSCH transmission, and the UE transmits according to the base station's instructions. However, in multi-panel scenarios, since different panels correspond to different TPMIs, the port grouping of the codewords actually corresponding to the TPMIs is also different. For example, one codeword corresponds to a fully coherent codeword with PTRS port 1, and another corresponds to codeword 2. In this case, PTRS is transmitted according to port 1 on one panel and according to port 2 on the other. However, if the network is configured for uplink transmission using SFN, the DMRS ports transmitted on both panels are the same group. That is, the PUSCH transmitted by panel 0 and the PUSCH transmitted by panel 1 use the same group of DMRS ports, which is obviously contradictory. Therefore, in uplink co-transmission under SFN, all reference signals and data remain consistent. When the TPMI indication corresponds to a different PTRS port under the existing protocol, the solution disclosed herein can effectively resolve the conflict.

[0188] In summary, the solution disclosed herein can solve the problem of inconsistent actual PTRS port numbers corresponding to different TPMIs indicated by network devices, thereby enabling enhanced indication under SFN transmission of PTRS. This supports CPE estimation of terminal multi-antenna panels under codebook-based configuration for SFN schemes in STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0189] Furthermore, the application of multiple TRPs / panels at base stations primarily aims to improve coverage at cell edges and provide a more balanced quality of service within the service area, using different methods to collaboratively transmit data among multiple TRPs / panels. From a network architecture perspective, deploying the network with a large number of distributed access points and centralized baseband processing is more conducive to providing a balanced user experience rate and significantly reducing latency and signaling overhead caused by handover. Utilizing the collaboration between multiple TRPs or panels to transmit / receive channels from multiple angles and multiple beams can better overcome various obstruction / blocking effects, ensuring the robustness of link connections, and is suitable for URLLC services to improve transmission quality and meet reliability requirements.

[0190] Figure 4 A schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure is shown. Figure 4 As shown, this method can be executed by a network device.

[0191] For network devices, in codebook-based PUSCH transmission in NR, if a terminal configures multiple SRS resources in one SRS resource set, the network side will provide feedback. The SRS Resource Indication (SRI) is used to select SRS resources. Based on uplink CSI measurements, network devices determine the precoding matrix TPMI and transport layer number RI used by the terminal for actual transmission, and configure and notify the terminal through the TPMI indication field. Typically, the terminal's data in subsequent uplink transmissions needs to be precoded using the TPMI and RI specified by the network side. Simultaneously, the precoded data is mapped to the corresponding antenna port according to the spatial direction indication information (spatial filter SpatialRelationInfo) corresponding to the SRS resource indicated by the SRI. Different SRSs use different spatial filters for transmission; therefore, the precoded data from the terminal needs to be filtered by the spatial filter used by the SRS indicated by the SRI. This method supports uplink data transmission from single-layer to full-rank.

[0192] Table 21 shows an example of the SRI indication method for multiple SRS resources in codebook-based PUSCH transmission. Table 22 shows examples of signaling indication methods for TPMI and RI in single-layer transmission, taking a 4-antenna port as an example, indicating different UE capabilities (i.e., for a 4-antenna port configuration with a transmission layer of 1: precoding information TPMI and transmission layer RI (when using DFTs-OFDM precoding, and when not using DFTs-OFDM precoding and with a transmission layer of 1)). Here, UE capabilities are divided into three types: fully correlated, partially correlated, and uncorrelated, characterizing the correlation capability of the antenna port. Table 23 exemplarily shows the codewords for single-layer transmission corresponding to a 4-antenna port (4-antenna single-stream codebook under uplink DFT-S-OFDM waveform).

[0193] Table 21

[0194] Bit field mapped to index <![CDATA[SRI(s),N SRS =2]]> 0 0 1 1

[0195] Table 22

[0196]

[0197] Table 23

[0198]

[0199] In multi-panel scenarios, different panels correspond to different TPMIs, and the port grouping of the codewords corresponding to the TPMIs is also different. For example, one codeword corresponds to a fully coherent codeword with PTRS port 1, while another corresponds to codeword 2. Therefore, when transmitting PTRS, one panel transmits according to port 1, while the other transmits according to port 2. However, if the network is configured for uplink transmission using SFN, the DMRS ports transmitted on both panels are in the same group. That is, the PUSCH transmitted by panel 0 and the PUSCH transmitted by panel 1 use the same group of DMRS ports. Obviously, if the UE transmits according to the base station's instructions, a conflict will occur. Therefore, in uplink co-transmission under SFN, all reference signals and data must remain consistent. Thus, when the TPMI indication corresponds to an inconsistent PTRS port under existing protocols, the solution disclosed in this publication can effectively resolve this conflict.

[0200] In the proposed solution, such as Figure 4 As shown, it includes the following steps.

[0201] S401, In the STxMP scenario where multiple uplink antenna panels transmit simultaneously, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) sends transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE under the network scheduling of multiple transmit and receive points (TRP) single-frequency network (SFN) transmission mode. The transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) indication field, DMRS port indication field, and PTRS-DMRS association indication field.

[0202] In embodiments of this disclosure, the network device can configure transmission configuration information for the UE. The transmission configuration information can dynamically include two or more sets of DCI information indication fields for multi-TRP SFN transmission. Each set of information indication fields includes at least the maximum number of PTRS ports, a Transmission Precoding Matrix Indicator (TPMI) indication field, and an association indication field between the PTRS and the Demodulation Reference Signal (DMRS). However, this disclosure is not limited to these, and each set of information indication fields may also include other information indication fields.

[0203] In some embodiments, the TCI beam indication information in a single DCI indicates two or more beams, and the transmission configuration information may include two or more TPMI indication fields, wherein each TPMI indication field is used to indicate the precoding matrix of the PUSCH transmission in the corresponding beam direction. In this case, the single DCI is used for multi-antenna panel multi-TRP transmission, and the multi-antenna panel multi-TRP transmission is a codebook-based PUSCH transmission. For each PUSCH transmission in the beam direction, a TPMI indication field indicates the precoding matrix used in that PUSCH transmission.

[0204] In some embodiments, the TCI beam indication information in a single DCI indicates two or more beams, and the transmission configuration information may include two or more SRI indication fields, wherein each SRI indication field is used for one or more SRS resources carrying precoded information in the SRS resource set allocated to the PUSCH transmission in the corresponding beam direction. In this case, the single DCI is used for multi-antenna panel multi-TRP transmission, and the multi-antenna panel multi-TRP transmission is a non-codebook-based PUSCH transmission. For each beam direction PUSCH transmission, one SRI indication field indicates one or more SRS resources selected from the SRS resource set allocated to that PUSCH transmission. For codebook-based PUSCH transmission, the SRI indication selects a corresponding spatial filter for the PUSCH transmission; that is, the PUSCH uses the spatial relationship information (TCI or Spatial Relation Info) corresponding to the SRS resources selected by the SRI as the spatial filter used for transmission. In non-codebook-based PUSCH transmission, multiple single-port SRS resources in an SRS resource set carry PUSCH precoding information calculated and suggested by the terminal. Each SRS resource carries precoding information used by the corresponding layer of data. The base station schedules and selects precoding information reported by the terminal through measurement and selects precoding information through SRI indication, that is, selects one or more SRS resources in the corresponding SRS resource set. After receiving the SRI indication from the base station, the terminal uses the precoding corresponding to one or more SRS resources as the precoding used for PUSCH transmission.

[0205] S402, for codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS receiving parameters for PUSCH transmission are determined. PTRS is received according to SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS receiving parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

[0206] In the embodiments of this disclosure, the network device and the UE apply the protocol rules described herein during uplink transmission. Based on the transmission configuration information and the preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. The network device can receive PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets according to the SFN transmission mode. These parameters include, but are not limited to, the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

[0207] In the embodiments of this disclosure, the network device can configure the maximum number of PTRS ports to the UE via RRC signaling, and this is not limited in the embodiments of this disclosure.

[0208] According to the uplink transmission control method of this disclosure, in the scenario of simultaneous transmission of STxMP by multiple uplink antenna panels, when the network configures the Physical Uplink Shared Channel (PUSCH) as a multi-transmit and receive point TRP single-frequency network SFN transmission mode, the network device sends transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE. The transmission configuration information includes at least one of the following: the maximum number of PTRS ports, the Transmission Precoding Matrix Indicator (TPMI) indication field, the DMRS port indication field, and the PTRS-DMRS association indication field. For codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and the preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. PTRS is received according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal (SRS) resource sets. The actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS. The scheme provided in this disclosure can realize enhanced indication under SFN transmission of PTRS, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration of SFN scheme under STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0209] Figure 5 A schematic flowchart of an uplink transmission control according to an embodiment of the present disclosure is shown. Figure 5 As shown, the method can be executed by a network device and may include the following steps.

[0210] S501, In the STxMP scenario where multiple uplink antenna panels transmit simultaneously, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) sends transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE under the network scheduling of multiple transmit and receive points (TRP) single-frequency network (SFN) transmission mode. The transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) indication field, DMRS port indication field, and PTRS-DMRS association indication field.

[0211] In some embodiments of this disclosure, whether PTRS is transmitted uplink can be controlled by higher-layer parameters configured in the network device. The network device can send RRC signaling to the UE to obtain the maximum number of PTRS ports. For example, the RRC configuration sets the maximum number of ports corresponding to PTRS, maxNrofPorts, to 1 or 2.

[0212] If the higher-layer parameter DMRS-UplinkConfig does not configure phaseTrackingRS for the UE, then the uplink UE will not transmit PTRS. If the higher-layer parameter UL-PTRS-present is configured for the UE, and the number of PTRS ports is 1 or 2, then the PTRS-DMRS association indication field in UL DCI0_1 / 0_2 indicates that a DMRS port is associated with this PTRS port. The maximum number of PTRS ports is obtained by configuring maxNrofPorts to 'n2' in the higher-layer parameter PTRS-UplinkConfig. If the indicated maximum number of PTRS ports is 2, then the network side divides the DMRS ports corresponding to the SRS resources into two groups and suggests associations for each group.

[0213] In some embodiments of this disclosure, the transmission configuration information includes a DMRS port indication field. The DMRS field of the DCI can indicate the DMRS port information used for PUSCH transmission in each beam direction. For example, if the indicated DMRS port is {0,1} and the corresponding transmission scheme is FDM or SFN transmission, then the DMRS port for PUSCH transmission in each beam direction uses port {0,1}, i.e., TRI is 2. For example, if the indicated DMRS port is {0,1} and the corresponding transmission scheme is SDM transmission, then the DMRS port corresponding to PUSCH transmission in each TCI beam direction can also be determined according to predefined rules. A possible port allocation is that PUSCH transmission in the first beam direction uses DMRS port {0} with a corresponding TRI of 1, and PUSCH transmission in the second beam direction uses DMRS port {1} with a corresponding TRI of 1.

[0214] In this disclosure, in some embodiments, the DMRS port or port group corresponding to the TO of the PUSCH associated with different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

[0215] In other words, for CB PUSCH, the DMRS port / port group indicated by the DMRS port indicator field associated with different SRS resource sets is the same, and TPMI 1 / TPMI 2 are respectively associated with the first / second SRS resource sets corresponding to different panels / TRP / TCIs. That is, the correspondence between TPMI and SRS resource sets can be that TPMI 1 corresponds to the first SRS resource set, or TPMI 1 corresponds to the second SRS resource set. In some embodiments of this disclosure, different SRS resource sets are associated with PUSCH transmission on a multi-antenna panel, and the correspondence between different SRS resource sets and the SRI / TPMI indicator fields is indicated by the SRS resource set indicator field.

[0216] The SRS resource set indicator field is used to dynamically indicate STRP and MTRP transmission scheduling.

[0217] In a single TRP, the first SRI / TPMI field can be associated with any SRS resource. Specifically, the SRS resourceet indicator field uses different code points to indicate the dynamic switching between STRP and MTRP. As shown in Table 1 above, it will not be repeated here.

[0218] In other words, different SRS resource sets can be associated with PUSCH transmissions on multi-panel / TRP / beam TCI states. The correspondence between SRS resource sets and TPMI / SRI fields is defined by the SRS resource set indicator. In Release 17, the protocol currently defines the first TPMI field as corresponding to the first SRS resource set, and the second TPMI field as corresponding to the second SRS resource set. In Release 18, the specific correspondence can be either the first TPMI field corresponding to the first SRS resource set, or the first TPMI field corresponding to the second SRS resource set.

[0219] In embodiments of this disclosure, a codebook pre-configuration table can be determined based on the codebook parameter configuration of PUSCH transmissions in the corresponding beam directions of the multi-panel and the corresponding codebook subset restrictions for PUSCH transmissions in the corresponding beam directions. The number of bits occupied by each TPMI indication field is determined based on the number of available TPMI combinations in the codebook pre-configuration table.

[0220] In this embodiment, the TCI beam indication information carried in a single DCI sent by the network device to the UE indicates two or more beams, and the transmission configuration information includes two or more TPMI indication fields. This single DCI is used for multi-antenna panel multi-TRP transmission, and this multi-antenna panel multi-TRP transmission is a codebook-based PUSCH transmission. Each codebook-based PUSCH transmission in each beam direction corresponds to one TPMI indication field; that is, one TPMI indication field can indicate the precoding matrix of a codebook-based PUSCH transmission in one beam direction. The network device can determine the codebook parameter configuration and codebook subset restrictions for PUSCH transmission in each beam direction, thereby determining the codebook pre-configuration table for PUSCH transmission in each beam direction. Each TPMI indication field included in the transmission configuration information carried in the DCI sent by the network device to the UE can carry an index, which is used to simultaneously indicate TPMI and TRI according to the codebook pre-configuration table. The number of bits occupied by each TPMI indication field is determined according to the number of available TPMI combinations in the corresponding codebook pre-configuration table.

[0221] The codebook parameter configuration allows for settings such as the number of antenna ports, whether to use transform precoding, and maxRank. The codebook subset restrictions include three types: fullyAndPartialAndNonCoherent; partiallyAndNonCoherent; and nonCoherent.

[0222] Other interpretations of step S401 in the above embodiments also apply to step S501 in this embodiment, and the principle is the same, so they will not be repeated here.

[0223] S502, for codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS receiving parameters for PUSCH transmission are determined. PTRS is received according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS receiving parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

[0224] In other words, in the scheme disclosed herein, the mapping between PTRS ports and DMRS ports corresponding to the TPMI domain that determines the number of PTRS ports can be used and applied to the PTRS transmission of two panels, i.e., the corresponding PTRS is transmitted on the same DMRS port. Accordingly, the network device receives the corresponding PTRS on the same DMRS port.

[0225] In some embodiments of this disclosure, the actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS. The actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

[0226] In some embodiments of this disclosure, each PTRS port has identical data and is received through the same one or more DMRS ports. In other words, the DMRS port indication fields of different probe reference signal (SRS) resource sets corresponding to different antenna panels indicate the same DMRS port or port group to enable multi-TRP SFN transmission and correspondingly enable PTRS reception of the network device.

[0227] In some optional embodiments, the actual PTRS reception parameters for PUSCH transmission determined based on the transmission configuration information and preset protocol rules, and the PTRS reception on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode, include: in response to the different number of PTRS ports actually corresponding to the precoder indicated by different TPMI indication fields, SFN reception is performed on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the actual PTRS reception parameters determined by preset protocol rules.

[0228] In other words, when the number of PTRS ports actually corresponding to the precoder indicated by TPMI1 is N1 and the number of PTRS ports actually corresponding to the precoder indicated by TPMI2 is N2, the actual number of PTRS ports N corresponding to PUSCH is determined by the preset protocol rules.

[0229] The preset protocol rules are described in detail below. In some optional embodiments of this disclosure, the preset protocol rules include any one of the following:

[0230] In one alternative approach, the actual number of PTRS ports is the number of PTRS ports corresponding to a preset TPMI. The preset TPMI is one of the TPMIs associated with the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to the TOs of the PUSCHs corresponding to each antenna panel / TRP / beam TCI state / SRS resource set. In other words, N is determined by the number of PTRS ports corresponding to a fixed TPMI field, such as the TPMI1 indication field, where N equals N1, and the determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to different panels.

[0231] The default TPMI is one of the TPMIs associated with different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCH TOs. Which TPMI is active can be specified through predefinition or network configuration.

[0232] In another alternative approach, the actual number of PTRS ports is the minimum of the number of PTRS ports associated with the TPMIs corresponding to the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to the TOs of the PUSCHs corresponding to different antenna panels / TRPs / beam TCI states / SRS resource sets. In other words, N equals the smaller of the number of PTRS ports corresponding to TPMI 1 / TPMI 2, i.e., min{N1,N2}, and the determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to different panels.

[0233] In another alternative approach, the actual number of PTRS ports is the maximum value among the PTRS port numbers corresponding to the TPMIs associated with each different antenna panel / TRP / beam TCI state / SRS resource set / PUSCH TO. The determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to the TOs of the PUSCHs corresponding to each different antenna panel / TRP / beam TCI state / SRS resource set. In other words, N equals the larger of the PTRS port numbers corresponding to TPMI 1 and TPMI 2, i.e., max{N1,N2}, and the determined actual number of PTRS ports and the DMRS ports used by the actual transmitting PTRS ports are simultaneously applied to different panels.

[0234] This disclosure does not limit other methods besides the options described above.

[0235] The following details the indications for the association between PTRS and DMRS. First, the contents of the relevant protocols are described to facilitate understanding of the indications for the association between PTRS and DMRS as defined in this disclosure.

[0236] For PDSCH / PUSCH channels, the data layer for data transmission corresponds to the DMRS port used for demodulation. The design of the data channel (PDSCH / PUSCH) DMRS in NR systems mainly includes the design of front-load DMRS and additional DMRS. For low-mobility scenarios, front-load DMRS can achieve channel estimation performance that meets demodulation requirements with lower overhead. Depending on the number of orthogonal ports used for transmission, front-load DMRS can be configured with a maximum of two OFDM symbols. However, NR systems consider mobility speeds up to 500 km / h. Faced with such a large dynamic range of mobility, in addition to front-load DMRS, more DMRS symbols need to be inserted during the scheduling duration in medium / high-speed scenarios to meet the estimation accuracy requirements for channel time-varying characteristics. The relevant protocols define DMRS port allocation tables with different uplink parameter configurations. For different DMRS types (1 or 2), symbol lengths, data transmission layers, and whether or not transform precoding is used (for example, dmrs-Type=1, maxLength=1, rank=1, transform precoder is disabled means DMRS type 1, single symbol, single stream transmission, no transform precoding), DMRS port allocation can be performed based on Tables 7.3.1.1.2-8 to 7.3.1.1.2-23, as shown in Tables 2 to 17 above, and will not be repeated here.

[0237] The port characteristics of PTRS and DMRS are related. When there are multiple DMRS ports, it is necessary to specify which DMRS ports or ports have the same port parameters as a certain PTRS port. That is, the association between PTRS and DMRS ports is specified through the association indication field of PTRS and DMRS.

[0238] The number of PTRS ports is related to the number of phase noise sources. When multiple independent phase noise sources exist, each phase noise source requires a PTRS port for phase estimation. Therefore, NR15 / 16 supports one downlink PTRS port and two uplink PTRS ports. Whether PTRS is transmitted in the uplink can be controlled by configuring higher-layer parameters. If the higher-layer parameter DMRS-UplinkConfig does not configure phaseTrackingRS for the UE, then the uplink UE will not transmit PTRS. If the higher layer configures the parameter UL-PTRS-present for the UE, and the number of PTRS ports is 1 or 2, then the PTRS-DMRS association indication field in UL DCI0_1 / 0_2 indicates that a DMRS port is associated with this PTRS port.

[0239] The specific relationships are shown in Tables 18 to 20 above, and will not be repeated here.

[0240] In some optional embodiments of this disclosure, in response to the data transmission layer number RANK equal to 1, the PTRS-DMRS association indication field is empty. PTRS is actually received on different PUSCH TO ports and the indicated DMRS port is used for PTRS reception. In other words, DMRS has more than one data transmission layer during transmission. When RANK = 1, the association between PTRS and DMRS is determined, and PTRS is directly transmitted on DRMS, requiring no indication.

[0241] In some optional embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways:

[0242] The two associated DMRS ports are indicated by 2 bits (this method can be used for cases where TPMI corresponds to fully coherent codewords);

[0243] Use 1 bit to indicate one of the first two DMRS ports or one of the DMRS ports that share the same PTRS port (this method can be used for cases where the corresponding coherent codeword of TPMI is used);

[0244] Accordingly, network devices can determine the DMRS port used by the actual PTRS receiving port based on the PTRS-DMRS association indication field, and use the DMRS port to receive PTRS on the TO of different PUSCHs respectively.

[0245] In other words, when RANK>=2 and the number of ports is 1, 2 bits can be used to indicate a specific DMRS port based on Table 2 (Table 7.3.1.1.2-25); or 1 bit can be used to indicate one of the first 2 DMRS ports or one of the DMRS ports sharing the same PTRS port.

[0246] In some optional embodiments of this disclosure, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports used for PUSCH transmission being 2, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways:

[0247] The two associated DMRS ports are indicated by 2 bits (this method can be used for cases where TPMI corresponds to fully coherent codewords);

[0248] One bit can be used to indicate only one of the first two DMRS ports or only one of the two DMRS ports that share the same PTRS port (this method can be used for cases where the TPMI corresponds to a coherent codeword).

[0249] Accordingly, the UE can determine the DMRS port corresponding to the first actual PTRS receiving port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the PTRS-DMRS association indication field, and determine the DMRS port corresponding to the second actual PTRS receiving port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the default rules, and receive PTRS respectively.

[0250] Among them, PTRS port 0 is the actual PTRS port 0, the first PTRS port, and PTRS port 1 is the actual PTRS port 1, the second actual PTRS port.

[0251] The DMRS port determined based on the default rules is any one of the following:

[0252] The other of the first two DMRS ports;

[0253] When RANK>2, any of the other DMRS ports;

[0254] Either of two DMRS ports that share the same PTRS port.

[0255] In other words, when RANK>=2 and the number of ports is 2, 2 bits can be used to indicate a specific DMRS port based on Table 4 (Table 7.3.1.1.2-26); or 1 bit can be used to indicate only one of the first two DMRS ports, or only one of the two DMRS ports that share the same PTRS port; the other PTRS port is sent according to the default rules, such as the other of the first two DMRS ports, or the first of the other DMRS ports when RANK>2, or the first of the two DMRS ports that always share the same PTRS port, which is not limited in this disclosure.

[0256] In some embodiments of this disclosure, when determining the DMRS port associated with PTRS, the PTRS port associated with PTRS is determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is received on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

[0257] In some embodiments of this disclosure, the maximum number of PT-RS ports is obtained by configuring maxNrofPorts in the higher-layer parameter PTRS-UplinkConfig to 'n2'. If the indicated maximum number of PTRS ports is 2, then the network side divides the DMRS ports corresponding to the SRS resources into two groups, and proposes association relationships based on the above rules.

[0258] In the embodiments of this disclosure, PDSCH was enhanced during the R16 research phase due to the application of downlink multi-TRP (transmitter-receiver point) / antenna panel multi-point cooperative transmission technology. Since data transmission involves scheduling feedback between uplink and downlink channels, enhancing only the downlink data channel in URLLC research cannot guarantee overall service performance. In the R17 research, enhancements were further made to the downlink control channel PDCCH and the uplink control channel PUCCH and data channel PUSCH.

[0259] Phase noise (PN) is caused by the local oscillator disrupting the orthogonality of subcarriers in an OFDM system. This leads to common phase error (CPE), causing the modulation constellation to rotate at a fixed angle and inter-carrier interference (ICI), resulting in scattering of constellation points. This is more pronounced at high frequencies. Because CPE has a greater impact, compensation for CPE is the primary consideration in NR. In NR, a PTRS signal is designed for CPE estimation. To enhance signal coverage and improve signal quality, PTRS is configured by the network to the terminal as a UE-specific reference signal. PTRS is used to track phase noise introduced by the local oscillator in the gNB and UE. PTRS can be seen as an extension of DMRS; they are closely related, such as using the same precoding, port association, orthogonal sequence generation, and QCL relationships.

[0260] The number of ports in a PTRS is related to the number of phase noise sources. When there are multiple independent phase noise sources, each phase noise source requires a PTRS port for phase estimation.

[0261] In other words, for codebook-based scenarios, network devices can use the TPMI to indicate to the UE which DMRS corresponds to which layer. The DMRS port indication field of the SRS resource set is used to indicate the set of DMRS ports used for demodulation in PUSCH transmission, and the UE transmits according to the base station's instructions. However, in multi-panel scenarios, since different panels correspond to different TPMIs, the port grouping of the codewords actually corresponding to the TPMIs is also different. For example, one codeword corresponds to a fully coherent codeword with PTRS port 1, while another corresponds to codeword 2. In this case, PTRS is transmitted according to port 1 on one panel and according to port 2 on the other. However, if the network is configured for uplink transmission using SFN, the DMRS ports transmitted on both panels are the same group. That is, the PUSCH transmitted by panel 0 and the PUSCH transmitted by panel 1 use the same group of DMRS ports, which is obviously contradictory. Therefore, in uplink co-transmission under SFN, all reference signals and data remain consistent. When the TPMI indication corresponds to a different PTRS port under the existing protocol, the solution disclosed herein can effectively resolve the conflict.

[0262] In summary, the solution disclosed herein can solve the problem of inconsistent actual PTRS port numbers corresponding to different TPMIs indicated by network devices, thereby enabling enhanced indication under SFN transmission of PTRS. This supports CPE estimation of terminal multi-antenna panels under codebook-based configuration for SFN schemes in STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0263] Furthermore, the application of multiple TRPs / panels at base stations primarily aims to improve coverage at cell edges and provide a more balanced quality of service within the service area, using different methods to collaboratively transmit data among multiple TRPs / panels. From a network architecture perspective, deploying the network with a large number of distributed access points and centralized baseband processing is more conducive to providing a balanced user experience rate and significantly reducing latency and signaling overhead caused by handover. Utilizing the collaboration between multiple TRPs or panels to transmit / receive channels from multiple angles and multiple beams can better overcome various obstruction / blocking effects, ensuring the robustness of link connections, and is suitable for URLLC services to improve transmission quality and meet reliability requirements.

[0264] In the embodiments provided above, the methods provided by the present disclosure have been described from the perspectives of both the UE and the network device. To implement the functions of the methods provided in the embodiments of the present disclosure, the network device may include hardware structures and software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. One of the above functions may be executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules.

[0265] Corresponding to the uplink transmission control provided in the above embodiments, this disclosure also provides an uplink transmission control device. Since the uplink transmission control device provided in this disclosure corresponds to the uplink transmission control provided in the above embodiments, the implementation method of uplink transmission control is also applicable to the uplink transmission control device provided in this embodiment, and will not be described in detail in this embodiment.

[0266] Figure 6 This is a schematic diagram of an uplink transmission control device 600 provided in an embodiment of the present disclosure. The uplink transmission control device 600 can be configured in a network device.

[0267] like Figure 6 As shown, the device 600 may include a transceiver module 610.

[0268] The transceiver module 610 is used for simultaneous uplink multi-antenna panel transmission of the Physical Uplink Shared Channel (PUSCH) in STxMP scenarios, based on a single downlink control information (DCI) for scheduling. Under network scheduling in a multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode, it receives transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by the network device. This transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) field, DMRS port indication field, and PTRS-DMRS association indication field. Furthermore, for codebook-based PUSCH transmission, it considers different antenna panels / T... PTRS is transmitted on the TO of the PUSCH corresponding to the RP / beam TCI status / SRS resource set according to the SFN transmission mode. Based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS transmission parameters used for PUSCH transmission are determined. PTRS is transmitted on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI status / detection reference signal SRS resource sets according to the SFN transmission mode. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port.

[0269] According to the uplink transmission control device of this disclosure, in the STxMP scenario where multiple uplink antenna panels simultaneously transmit the Physical Uplink Shared Channel (PUSCH) based on a single downlink control information (DCI) and the network is scheduled as a multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode, the device receives transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by the network device. The transmission configuration information includes at least one of the following: maximum number of PTRS ports, Transmission Precoding Matrix Indicator (TPMI) indication field, DMRS port indication field, and PTRS-DMRS association relationship indication field. For codebook-based PUSCH transmission, based on the transmission configuration information and preset protocol rules, the actual PTRS transmission parameters for PUSCH transmission are determined. PTRS is transmitted on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual transmitted PTRS. The scheme provided in this disclosure can realize enhanced indication under SFN transmission of PTRS, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration of SFN scheme under STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0270] In some embodiments, the DMRS port or port group corresponding to the TO of the PUSCH associated with different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

[0271] In some embodiments, the transceiver module 610 is specifically used to: transmit the same number of PTRS port data on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in the PUSCH multi-TRP SFN transmission mode, wherein each PTRS port data is the same and is transmitted through the same one or more DMRS ports.

[0272] In some embodiments, the transceiver module 610 is specifically configured to: in response to the different actual number of PTRS ports corresponding to the precoder indicated by different TPMI indication fields, determine the actual PTRS transmission parameters according to preset protocol rules based on the maximum number of PTRS ports and the association relationship between PTRS-DMRS ports indicated by the PTRS-DMRS association relationship indication field; and based on the actual PTRS transmission parameters, transmit PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode.

[0273] In some embodiments, the preset protocol rules include any one of the following: the actual number of PTRS ports is the number of PTRS ports corresponding to the preset TPMI; the preset TPMI is one of the TPMIs associated with the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs, and the determined actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port are simultaneously applied to the TOs of the TOs of the PUSCHs corresponding to different antenna panels / TRPs / beam TCI states / SRS resource sets; the actual number of PTRS ports is the number of PTRS ports corresponding to the TPMIs associated with the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The minimum value among the TRS port numbers is used, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set; the actual PTRS port number is the maximum value among the PTRS port numbers corresponding to the TPMI associated with the TO of each antenna panel / TRP / beam TCI state / SRS resource set / PUSCH, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set.

[0274] In some embodiments, the transceiver module 610 is further configured to: receive RRC signaling sent by the network device, wherein the RRC signaling includes the maximum number of PTRS ports, and the actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

[0275] In some embodiments, in response to the data transmission layer number RANK being equal to 1, the PTRS-DMRS association indication field is empty, and PTRS is actually transmitted on the TO of different PUSCHs using the indicated DMRS port.

[0276] In some embodiments, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual PTRS transmission in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating one of the first two DMRS ports or one of the DMRS ports sharing the same PTRS port with 1 bit; wherein, transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: determining the DMRS port corresponding to the actual PTRS transmission based on the PTRS-DMRS association indication field, and transmitting PTRS on the TO of different PUSCHs using the DMRS port respectively.

[0277] In some embodiments, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports used for PUSCH transmission being 2, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual transmitted PTRS in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating only one of the first two DMRS ports or only one of the two DMRS ports sharing the same PTRS port with 1 bit; wherein, transmitting PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission method includes: determining the DMRS port corresponding to the first actual transmitted PTRS port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the PTRS-DMRS association indication field, determining the DMRS port corresponding to the second actual transmitted PTRS port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the default rule, and transmitting PTRS respectively.

[0278] In some embodiments, the DMRS port determined based on the default rules is any one of the following: the other of the first two DMRS ports; any of the other DMRS ports when RANK>2; or any one of the two DMRS ports that share the same PTRS port.

[0279] In some embodiments of this disclosure, when determining the DMRS port associated with PTRS, the PTRS port associated with PTRS is determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is transmitted on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

[0280] In some embodiments, different SRS resource sets are associated with PUSCH transmissions on a multi-antenna panel, and the correspondence between different SRS resource sets and SRI / TPMI indication fields is indicated by the SRS resource set indication field.

[0281] In summary, the uplink transmission control device disclosed herein can solve the problem of inconsistent actual PTRS port numbers corresponding to different TPMIs indicated by network devices, thereby achieving enhanced indication under SFN transmission of PTRS. This supports CPE estimation of terminal multi-antenna panels under STxMP transmission with codebook-based configuration of the SFN scheme, making multi-point cooperative transmission more effective and significantly improving data transmission reliability and throughput. Furthermore, the application of multiple TRPs / panels in base stations is mainly to improve coverage at cell edges and provide a more balanced quality of service within the service area, using different methods to cooperate in data transmission among multiple TRPs / panels. From a network architecture perspective, network deployment with a large number of distributed access points and centralized baseband processing is more conducive to providing a balanced user experience rate and significantly reducing latency and signaling overhead caused by handover. Utilizing cooperation between multiple TRPs or panels to transmit / receive channels from multiple angles and multiple beams can better overcome various obstruction / blocking effects, ensuring the robustness of link connections, and is suitable for improving transmission quality and meeting reliability requirements for URLLC services.

[0282] Figure 7 This is a schematic diagram of an uplink transmission control device 700 provided in an embodiment of the present disclosure. The uplink transmission control device 700 can be configured in a network device.

[0283] like Figure 7 As shown, the device 700 may include a transceiver module 710.

[0284] The transceiver module 701 is used to transmit transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE in the context of simultaneous transmission of STxMP using multiple uplink antenna panels and the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI). This transmission configuration information includes at least one of the following: the maximum number of PTRS ports, the Transmission Precoding Matrix Indicator (TPMI) field, the DMRS port indication field, and the PTRS-DMRS association indication field. For codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. PTRS reception is performed according to the SFN transmission mode at the transmission timing (TO) of PUSCH corresponding to different antenna panel / TRP / beam TCI states / SRS resource sets. The actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

[0285] According to the uplink transmission control apparatus of this disclosure, in the scenario of simultaneous transmission of STxMP across multiple uplink antenna panels, when the network configures the Physical Uplink Shared Channel (PUSCH) as a multi-transmit and receive point TRP single-frequency network (SFN) transmission mode, the network device sends transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE. The transmission configuration information includes at least one of the following: the maximum number of PTRS ports, the Transmission Precoding Matrix Indicator (TPMI) indication field, the DMRS port indication field, and the PTRS-DMRS association indication field. For codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. PTRS is received according to the SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. The actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS. The scheme provided in this disclosure can realize enhanced indication under SFN transmission of PTRS, thereby supporting CPE estimation of terminal multi-antenna panels under codebook-based configuration of SFN scheme under STxMP transmission, making multi-point cooperative transmission more effective and effectively improving the reliability and throughput of data transmission.

[0286] In some embodiments, the DMRS port or port group corresponding to the TO of the PUSCH associated with different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

[0287] In some embodiments, the transceiver module 701 is configured to: receive the same number of PTRS port data on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in the PUSCH multi-TRP SFN transmission mode, wherein each PTRS port data is the same and is received through the same one or more DMRS ports.

[0288] In some embodiments, the transceiver module 701 is specifically used to: in response to the different actual PTRS port numbers corresponding to the precoder indicated by different TPMI indication fields, perform SFN reception on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the actual PTRS reception parameters determined by preset protocol rules.

[0289] In some embodiments, the preset protocol rules include any one of the following: the actual number of PTRS ports is the number of PTRS ports corresponding to the preset TPMI; the preset TPMI is one of the TPMIs associated with the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs, and the determined actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port are simultaneously applied to the TOs of the TOs of the PUSCHs corresponding to different antenna panels / TRPs / beam TCI states / SRS resource sets; the actual number of PTRS ports is the number of PTRS ports corresponding to the TPMIs associated with the TOs of different antenna panels / TRPs / beam TCI states / SRS resource sets / PUSCHs. The minimum value among the TRS port numbers is used, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set; the actual PTRS port number is the maximum value among the PTRS port numbers corresponding to the TPMI associated with the TO of each antenna panel / TRP / beam TCI state / SRS resource set / PUSCH, and the determined actual PTRS port number and the DMRS port used by the actual transmitting PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set.

[0290] In some embodiments, the transceiver module 701 is further configured to: send RRC signaling to the UE, wherein the RRC signaling includes the maximum number of PTRS ports, and the actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

[0291] In some embodiments, in response to the data transmission layer number RANK being equal to 1, the PTRS-DMRS association indication field is empty, and PTRS is actually received on the TO of different PUSCHs using the indicated DMRS port.

[0292] In some embodiments, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating one of the first two DMRS ports or one of the DMRS ports sharing the same PTRS port with 1 bit; wherein, receiving PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: determining the DMRS port used by the actual received PTRS port based on the PTRS-DMRS association indication field, and receiving PTRS on the TO of different PUSCHs respectively using the DMRS port.

[0293] In some embodiments, in response to RANK being greater than or equal to 2 and the actual number of PTRS ports being 2, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways: indicating the two associated DMRS ports with 2 bits; indicating only one of the first two DMRS ports or only one of the two DMRS ports sharing the same PTRS port with 1 bit; wherein, receiving PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to SFN transmission mode includes: determining the DMRS port corresponding to the first actual received PTRS port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the PTRS-DMRS association indication field, determining the DMRS port corresponding to the second actual received PTRS port on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on default rules, and receiving PTRS respectively.

[0294] In some embodiments, the DMRS port determined based on the default rules is any one of the following: the other of the first two DMRS ports; any of the other DMRS ports when RANK>2; or any one of the two DMRS ports that share the same PTRS port.

[0295] In some embodiments of this disclosure, when determining the DMRS port associated with PTRS, the PTRS port associated with PTRS is determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is received on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

[0296] In some embodiments, different SRS resource sets are associated with PUSCH transmissions on a multi-antenna panel, and the correspondence between different SRS resource sets and SRI / TPMI fields is indicated by the SRS resource set indicator field.

[0297] In summary, the uplink transmission control device disclosed herein can solve the problem of inconsistent actual PTRS port numbers corresponding to different TPMIs indicated by network devices, thereby achieving enhanced indication under SFN transmission of PTRS. This supports CPE estimation of terminal multi-antenna panels under STxMP transmission with codebook-based configuration of the SFN scheme, making multi-point cooperative transmission more effective and significantly improving data transmission reliability and throughput. Furthermore, the application of multiple TRPs / panels in base stations is mainly to improve coverage at cell edges and provide a more balanced quality of service within the service area, using different methods to cooperate in data transmission among multiple TRPs / panels. From a network architecture perspective, network deployment with a large number of distributed access points and centralized baseband processing is more conducive to providing a balanced user experience rate and significantly reducing latency and signaling overhead caused by handover. Utilizing cooperation between multiple TRPs or panels to transmit / receive channels from multiple angles and multiple beams can better overcome various obstruction / blocking effects, ensuring the robustness of link connections, and is suitable for improving transmission quality and meeting reliability requirements for URLLC services.

[0298] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a communication device 800 provided in an embodiment of this disclosure. The communication device 800 can be a network device, a user device, a chip, chip system, or processor that supports the network device in implementing the above methods, or a chip, chip system, or processor that supports the user device in implementing the above methods. This device can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0299] The communication device 800 may include one or more processors 801. The processor 801 may be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control the communication device (e.g., base station, baseband chip, terminal equipment, terminal equipment chip, DU or CU, etc.), execute computer programs, and process data from the computer programs.

[0300] Optionally, the communication device 800 may further include one or more memories 802, which may store a computer program 804. The processor 801 executes the computer program 804 to cause the communication device 800 to perform the method described in the above method embodiments. Optionally, the memory 802 may also store data. The communication device 800 and the memory 802 may be provided separately or integrated together.

[0301] Optionally, the communication device 800 may also include a transceiver 805 and an antenna 806. The transceiver 805 may be referred to as a transceiver unit, transceiver, or transceiver circuit, etc., and is used to implement the transmission and reception functions. The transceiver 805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or receiving circuit, etc., and is used to implement the receiving function; the transmitter may be referred to as a transmitter or transmitting circuit, etc., and is used to implement the transmitting function.

[0302] Optionally, the communication device 800 may further include one or more interface circuits 807. The interface circuits 807 are used to receive code instructions and transmit them to the processor 801. The processor 801 executes the code instructions to cause the communication device 800 to perform the methods described in the above method embodiments.

[0303] In one implementation, the processor 801 may include a transceiver for implementing receive and transmit functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing receive and transmit functions may be separate or integrated. The aforementioned transceiver circuit, interface, or interface circuit can be used for reading and writing code / data, or it can be used for transmitting or relaying signals.

[0304] In one implementation, processor 801 may store computer program 803, which runs on processor 801 and causes communication device 800 to perform the methods described in the above method embodiments. Computer program 803 may be embedded in processor 801; in this case, processor 801 may be implemented in hardware.

[0305] In one implementation, the communication device 800 may include circuitry capable of performing the functions of transmitting, receiving, or communicating as described in the foregoing method embodiments. The processor and transceiver described in this disclosure can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide-semiconductor (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide-semiconductor (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0306] The communication device described in the above embodiments may be a network device or a user equipment, but the scope of the communication device described in this disclosure is not limited thereto, and the structure of the communication device may vary. Figure 8 The communication device may be a standalone device or part of a larger device. For example, the communication device may be:

[0307] (1) Independent integrated circuit IC, or chip, or chip system or subsystem;

[0308] (2) A collection of one or more ICs, optionally including storage components for storing data and computer programs;

[0309] (3) ASIC, such as modem;

[0310] (4) Modules that can be embedded in other devices;

[0311] (5) Receivers, terminal equipment, smart terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.

[0312] (6) Others, etc.

[0313] For cases where the communication device can be a chip or a chip system, please refer to [link / reference]. Figure 9 The diagram shows the structure of the chip. Figure 9 The chip shown includes a processor 901 and an interface 902. There can be one or more processors 901, and multiple interfaces 902.

[0314] Optionally, the chip also includes a memory 903, which is used to store necessary computer programs and data.

[0315] Those skilled in the art will also understand that the various illustrative logical blocks and steps listed in the embodiments of this disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and the overall system design requirements. Those skilled in the art can implement the described functionality using various methods for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of this disclosure.

[0316] This disclosure also provides a readable storage medium having instructions stored thereon that, when executed by a computer, implement the functions of any of the above method embodiments.

[0317] This disclosure also provides a computer program product that, when executed by a computer, implements the functions of any of the above method embodiments.

[0318] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program can be transferred from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).

[0319] Those skilled in the art will understand that the various numerical designations such as "first," "second," etc., used in this disclosure are merely for the convenience of description and are not intended to limit the scope of the embodiments of this disclosure, nor do they indicate the order of events.

[0320] At least one of the features described in this disclosure can also be described as one or more, and multiple features can be two, three, four or more, and this disclosure does not impose any limitations. In the embodiments of this disclosure, for a technical feature, the technical features in that technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", etc., and there is no sequential order or size order among the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0321] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, device, and / or apparatus (e.g., disk, optical disk, memory, programmable logic device (PLD)) used to provide machine instructions and / or data to a programmable processor, including machine-readable media that receive machine instructions as machine-readable signals. The term "machine-readable signal" refers to any signal used to provide machine instructions and / or data to a programmable processor.

[0322] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as a data server), or computing systems that include middleware components (e.g., an application server), or computing systems that include frontend components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with embodiments of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), and the Internet.

[0323] Computer systems can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. Client-server relationships are created by computer programs running on the respective computers and having a client-server relationship with each other.

[0324] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this disclosure can be achieved, and this is not limited herein.

[0325] Furthermore, it should be understood that the various embodiments described in this disclosure can be implemented individually or in combination with other embodiments, where the scheme allows.

[0326] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0327] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0328] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An uplink transmission control method, characterized in that, The method is executed by a user equipment (UE), and the method includes: In the STxMP scenario where multiple uplink antenna panels simultaneously transmit, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) is used. Under the network scheduling of a multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode, the PUSCH receives transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by the network device. This transmission configuration information includes a Transmission Precoding Matrix Indicator (TPMI) field, and at least one of the following: the maximum number of PTRS ports, the Demodulation Reference Signal (DMRS) port indication field, and the PTRS-DMRS association indication field. For codebook-based PUSCH transmission, the actual PTRS transmission parameters for PUSCH transmission are determined based on the PTRS-related transmission configuration information and preset protocol rules. PTRS is transmitted according to SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port.

2. The method according to claim 1, characterized in that, The DMRS port or port group corresponding to the TO of the PUSCH associated with the different antenna panels / TRP / beam TCI states / SRS resource sets is the same.

3. The method according to claim 1, characterized in that, The transmission of PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to SFN transmission mode includes: In the PUSCH multi-TRP SFN transmission mode, the same number of PTRS port data are transmitted on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. Each PTRS port data is the same and is transmitted through the same one or more DMRS ports.

4. The method according to claim 1, characterized in that, The actual PTRS transmission parameters for PUSCH transmission, determined based on the transmission configuration information and preset protocol rules, include PTRS transmission on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets, respectively, according to the SFN transmission mode. In response to the different actual PTRS port numbers indicated by different TPMI indication fields for the precoder, the actual PTRS transmission parameters are determined based on the maximum number of PTRS ports and the association between PTRS-DMRS ports indicated by the PTRS-DMRS association indication field, according to the preset protocol rules. Based on the actual PTRS transmission parameters, PTRS is transmitted on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets in accordance with the SFN transmission mode.

5. The method according to claim 1, characterized in that, The preset protocol rules include any one of the following: The actual number of PTRS ports is the number of PTRS ports corresponding to the preset TPMI. The preset TPMI is one of the TPMIs associated with the TO of each antenna panel / TRP / beam TCI state / SRS resource set / PUSCH. The determined actual number of PTRS ports and the DMRS port used by the actual PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set. The actual number of PTRS ports is the minimum value among the PTRS port numbers corresponding to the TPMI associated with each of the different antenna panels / TRP / beam TCI states / SRS resource sets / PUSCH TOs. The determined actual number of PTRS ports and the DMRS ports used by the actual PTRS transmission ports are simultaneously applied to the TOs of the PUSCHs corresponding to each of the different antenna panels / TRP / beam TCI states / SRS resource sets. The actual number of PTRS ports is the maximum value among the PTRS port numbers corresponding to the TPMI associated with each of the different antenna panels / TRP / beam TCI states / SRS resource sets / PUSCH TOs. The determined actual number of PTRS ports and the DMRS ports used by the actual PTRS transmission ports are simultaneously applied to the TOs of the PUSCHs corresponding to each of the different antenna panels / TRP / beam TCI states / SRS resource sets.

6. The method according to claim 1, characterized in that, The method further includes: Receive RRC signaling sent by the network device. The RRC signaling includes the maximum number of PTRS ports, and the actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

7. The method according to claim 1, characterized in that, In response to the data transmission layer number RANK being equal to 1, the PTRS-DMRS association indication field is empty, and PTRS is actually transmitted on the TO of different PUSCHs using the indicated DMRS port.

8. The method according to claim 1, characterized in that, In response to a RANK greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual PTRS transmission in one of the following ways: The associated DMRS port is indicated by 2 bits; Use 1 bit to indicate one of the first two DMRS ports or one of the DMRS ports that share the same PTRS port; The transmission of PTRS on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: Based on the PTRS-DMRS association indication field, the DMRS port used for the actual PTRS transmission port is determined, and the DMRS port is used to transmit PTRS on the TO of different PUSCHs respectively.

9. The method according to claim 1, characterized in that, In response to a RANK greater than or equal to 2 and the actual number of PTRS ports being 2, the PTRS-DMRS association indication field determines the DMRS port used by the actual PTRS transmitting port in one of the following ways: The two associated DMRS ports are indicated by 2 bits; One bit indicates only one of the first two DMRS ports or only one of the two DMRS ports that share the same PTRS port; The transmission of PTRS on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: Based on the PTRS-DMRS association indication field, determine the DMRS port corresponding to the first actual PTRS port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. Based on the default rules, determine the DMRS port corresponding to the second actual PTRS port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets, and transmit PTRS respectively.

10. The method according to claim 9, characterized in that, The DMRS port determined based on the default rules is any of the following: The other of the first two DMRS ports; Any of the other DMRS ports when RANK>2; Either of two DMRS ports that share the same PTRS port.

11. The method according to any one of claims 1 to 10, characterized in that, The actual number of PTRS ports and the DMRS port used to transmit the PTRS port are determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules. At the same time, the same PTRS port is transmitted on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

12. The method according to any one of claims 1 to 10, characterized in that, Different SRS resource sets are associated with PUSCH transmissions on multi-antenna panels, and the correspondence between different SRS resource sets and SRI / TPMI indication fields is indicated by the SRS resource set indication field.

13. An uplink transmission control method, characterized in that, The method is performed by a network device, and the method includes: In the STxMP scenario where multiple uplink antenna panels transmit simultaneously, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) sends transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE when the network is scheduled as a multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode. The transmission configuration information includes a Transmission Precoding Matrix Indicator (TPMI) field, and also includes at least one of the following: the maximum number of PTRS ports, the Demodulation Reference Signal (DMRS) port indication field, and the PTRS-DMRS association relationship indication field. For codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. PTRS is received according to SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

14. The method according to claim 13, characterized in that, Different antenna panels / TRP / beam TCI status / SRS resource sets are associated with the same DMRS port or port group corresponding to the PUSCH TO.

15. The method according to claim 13, characterized in that, The reception of PTRS on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to SFN transmission mode includes: In the PUSCH multi-TRP SFN transmission mode, the same number of PTRS port data are received on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. Each PTRS port data is the same and is received through the same one or more DMRS ports.

16. The method according to claim 13, characterized in that, The actual PTRS reception parameters for PUSCH transmission, determined based on the transmission configuration information and preset protocol rules, include PTRS reception on the TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets, respectively, according to the SFN transmission mode: In response to the different PTRS port numbers actually corresponding to the precoder indicated by different TPMI indication fields, SFN reception is performed on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets based on the actual PTRS reception parameters determined by the preset protocol rules.

17. The method according to claim 13, characterized in that, The preset protocol rules include any one of the following: The actual number of PTRS ports is the number of PTRS ports corresponding to the preset TPMI. The preset TPMI is one of the TPMIs associated with the TO of each antenna panel / TRP / beam TCI state / SRS resource set / PUSCH. The determined actual number of PTRS ports and the DMRS port used by the actual PTRS port are simultaneously applied to the TO of the PUSCH corresponding to each antenna panel / TRP / beam TCI state / SRS resource set. The actual number of PTRS ports is the minimum value among the PTRS port numbers corresponding to the TPMI associated with each of the different antenna panels / TRP / beam TCI states / SRS resource sets / PUSCH TOs. The determined actual number of PTRS ports and the DMRS ports used by the actual PTRS transmission ports are simultaneously applied to the TOs of the PUSCHs corresponding to each of the different antenna panels / TRP / beam TCI states / SRS resource sets. The actual number of PTRS ports is the maximum value among the PTRS port numbers corresponding to the TPMI associated with each of the different antenna panels / TRP / beam TCI states / SRS resource sets / PUSCH TOs. The determined actual number of PTRS ports and the DMRS ports used by the actual PTRS transmission ports are simultaneously applied to the TOs of the PUSCHs corresponding to each of the different antenna panels / TRP / beam TCI states / SRS resource sets.

18. The method according to claim 13, characterized in that, The method further includes: Send RRC signaling to the UE, The RRC signaling includes the maximum number of PTRS ports, and the actual number of PTRS ports is less than or equal to the maximum number of PTRS ports.

19. The method according to claim 13, characterized in that, In response to the data transmission layer number RANK being equal to 1, the PTRS-DMRS association indication field is empty, and PTRS is actually received on the TO of different PUSCHs using the indicated DMRS port.

20. The method according to claim 13, characterized in that, In response to a RANK greater than or equal to 2 and the actual number of PTRS ports being 1, the PTRS-DMRS association indication field determines the DMRS port corresponding to the actual received PTRS in one of the following ways: The associated DMRS port is indicated by 2 bits; Use 1 bit to indicate one of the first two DMRS ports or one of the DMRS ports that share the same PTRS port; The step of receiving PTRS on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: Based on the PTRS-DMRS association indication field, the DMRS port used for the actual PTRS reception port is determined, and the DMRS port is used to receive PTRS on the TO of different PUSCHs respectively.

21. The method according to claim 13, characterized in that, In response to a RANK greater than or equal to 2 and the actual number of PTRS ports being 2, the PTRS-DMRS association indication field determines the DMRS port used by the actual receiving PTRS port in one of the following ways: The two associated DMRS ports are indicated by 2 bits; One bit indicates only one of the first two DMRS ports or only one of the two DMRS ports that share the same PTRS port; The step of receiving PTRS on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets according to the SFN transmission mode includes: Based on the PTRS-DMRS association indication field, determine the DMRS port corresponding to the first actual PTRS receiving port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets. Based on the default rules, determine the DMRS port corresponding to the second actual PTRS receiving port on the TO of the PUSCH corresponding to different antenna panels / TRP / beam TCI states / SRS resource sets, and receive PTRS respectively.

22. The method according to claim 21, characterized in that, The DMRS port determined based on the default rules is any of the following: The other of the first two DMRS ports; Any of the other DMRS ports when RANK>2; Either of two DMRS ports that share the same PTRS port.

23. The method according to any one of claims 13 to 22, characterized in that, The actual number of PTRS ports and the DMRS port used for transmitting the PTRS port are determined by the TPMI corresponding to the TO of the corresponding antenna panel / TRP / beam TCI state / SRS resource set / PUSCH determined by the preset protocol rules, and the same PTRS port is received on the same DMRS port on different antenna panels / TRP / beam TCI state / SRS resource set / PUSCH TO.

24. The method according to any one of claims 13 to 22, characterized in that, Different SRS resource sets are associated with PUSCH transmissions on multi-antenna panels, and the correspondence between different SRS resource sets and SRI / TPMI indication fields is indicated by the SRS resource set indication field.

25. An uplink transmission control device, characterized in that, The device is configured on the UE, and the device includes a transceiver module, the transceiver module being used for: In the STxMP scenario where multiple uplink antenna panels transmit simultaneously, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) receives transmission configuration information related to the Phase Tracking Reference Signal (PTRS) sent by the network device under the network scheduling mode of multiple transmit and receive points (TRP) single-frequency network (SFN). The transmission configuration information includes a Transmission Precoding Matrix Indicator (TPMI) field, and also includes at least one of the following: the maximum number of PTRS ports, the Demodulation Reference Signal (DMRS) port indication field, and the PTRS-DMRS association relationship indication field. as well as For codebook-based PUSCH transmission, the actual PTRS transmission parameters for PUSCH transmission are determined based on the PTRS-related transmission configuration information and preset protocol rules. PTRS is transmitted according to SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS transmission parameters include the actual number of PTRS ports and the DMRS port used by the actual PTRS transmission port.

26. An uplink transmission control device, characterized in that, The device is configured in a network device, and the device includes a transceiver module, the transceiver module being used for: In the STxMP scenario where multiple uplink antenna panels transmit simultaneously, the Physical Uplink Shared Channel (PUSCH) scheduled based on a single downlink control information (DCI) sends transmission configuration information related to the Phase Tracking Reference Signal (PTRS) to the UE when the network is scheduled as a multi-transmitter and receiver point (TRP) single-frequency network (SFN) transmission mode. The transmission configuration information includes a Transmission Precoding Matrix Indicator (TPMI) field, and also includes at least one of the following: the maximum number of PTRS ports, the Demodulation Reference Signal (DMRS) port indication field, and the PTRS-DMRS association relationship indication field. For codebook-based PUSCH transmission, based on the PTRS-related transmission configuration information and preset protocol rules, the actual PTRS reception parameters for PUSCH transmission are determined. PTRS is received according to SFN transmission mode at the transmission timing TO of PUSCH corresponding to different antenna panels / TRP / beam TCI states / detection reference signal SRS resource sets. The actual PTRS reception parameters include the actual number of PTRS ports and the DMRS port corresponding to the actual received PTRS.

27. A communication device, wherein, include: transceiver; Memory; A processor, connected to both the transceiver and the memory, is configured to control the wireless signal transmission and reception of the transceiver by executing computer-executable instructions on the memory, and to implement the method described in any one of claims 1-24.

28. A computer storage medium, wherein, The computer storage medium stores computer-executable instructions; when executed by a processor, the computer-executable instructions can implement the method described in any one of claims 1-24.

Images