Communication method and device and storage medium

Abstract

The invention relates to a communication method and device and a storage medium. The communication method is applied to a network device, and the method comprises the following steps: sending indication information; the indication information comprises a PT-RS-DMRS (Phase Tracking Reference Signal-Demodulation Reference Signal) association relationship indication domain, and the PT-RS-DMRS association relationship indication domain is used for indicating an association relationship between a PTRS port and a DMRS port of the terminal under space division multiplexing (SDM); the high-order 1 bit and the low-order 1 bit of the PT-RS-DMRS association relationship indication domain are respectively used for indicating the relationship between the DMRS port and the PT-RS port corresponding to different transmission receiving points TRP / panel Panel / transmission configuration indication TCI / transmission opportunity TO.

Description

[0001] This disclosure is a divisional application of application number 202280003683.9, entitled "An Indication Method, Apparatus and Storage Medium for Uplink Phase Tracking Reference Signal Port". Technical Field

[0002] This disclosure relates to the field of communication technology, and in particular to a communication method, apparatus, and storage medium. Background Technology

[0003] In multi-transmission and Reception Point (multi-TRP) scenarios, uplink enhancement supports the retransmission of the Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) by employing Time Division Multiplexing (TDM) to transmit uplink data to different Transmission and Reception Points (TRPs) in different uplink beam directions. Currently, the bottleneck of communication systems remains uplink transmission rate and coverage. Therefore, the system enhancement direction for the R18 standard mainly considers using multi-antenna panel terminals for simultaneous uplink transmission in Multi-TRP (also known as mTRP or M-TRP) scenarios to improve uplink rate and further enhance transmission reliability.

[0004] In NR, to enhance signal coverage and improve signal quality, PT-RS is configured by the network to the terminal as a UE-specific reference signal. PT-RS is used to track phase noise introduced by the local oscillator in network devices and terminals and for estimating Common Phase Error (CPE). PT-RS can be viewed as an extension of the demodulation reference signal (DMRS) and has a close relationship with it, such as using the same precoding, port correlation, orthogonal sequence generation, and quasi-co-location (QCL) relationships.

[0005] In uplink enhancement, in order to support the simultaneous transmission via multi-panel (STxMP) scheme based on single-DCI (single-downlink control information, S-DCI, also known as single DCI), it is necessary to consider different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, so as to support accurate estimation of CPE in the case of multiple panels of terminal. Summary of the Invention

[0006] To overcome the problems existing in related technologies, this disclosure provides a communication method, apparatus and storage medium.

[0007] According to a first aspect of the present disclosure, a communication method is provided, applied to a network device, the method comprising: transmitting indication information; the indication information including a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field, the PT-RS-DMRS association indication field being used to indicate the association relationship between a terminal's PTRS port and DMRS port under spatial division multiplexing (SDM); the high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field being used respectively to indicate the relationship between the DMRS port and PT-RS port corresponding to different transmission receiving points (TRP / Panel / Transmission Configuration Indication (TCI) / Transmission Timing (TO).

[0008] In one embodiment, in response to the terminal determining that multiple antenna panels of the Physical Uplink Shared Channel (PUSCH) are simultaneously transmitting STxMP based on the Single Downlink Control Information (S-DCI) scheduling method, the terminal is configured to send a PT-RS reference signal; and indication information is sent to the terminal, the indication information being used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0009] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between PT-RS ports and DMRS ports.

[0010] In one embodiment, the indication method for the association between the PT-RS port and the DMRS port is determined based on at least one of the following information: the maximum number of PT-RS ports; the transmission mode used by the terminal for uplink transmission; and the actual number of transmission layers of the terminal.

[0011] In one implementation, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0012] In one implementation, in response to the actual number of transport layers being greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated by the S-DCI to the terminal.

[0013] In one embodiment, in response to the maximum number of PT-RS ports being 2, an indication method for determining the association between the PT-RS ports and DMRS ports is determined based on the transmission mode and the actual number of transmission layers.

[0014] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by a 0 bit.

[0015] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, and the actual number of transmission layers being greater than 2, the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of transmission layers supported by the terminal that correspond to different TRP / Panel / TCI / TO PUSCH transmissions.

[0016] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. Combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1 are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports on different antenna panels.

[0017] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO combinations, including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

[0018] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0019] In one embodiment, in response to the transmission mode being Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0020] In one embodiment, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0021] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 4 bits.

[0022] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0023] In one embodiment, 2 bits are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel; the number of bits indicating the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0024] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0025] According to a second aspect of the present disclosure, a communication method is provided, applied to a terminal, the method comprising:

[0026] Obtain indication information, which includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field. The PT-RS-DMRS association indication field is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and the PT-RS port corresponding to different transmission receiving points (TRP / Panel / Transmission Configuration Indication (TCI) / Transmission Timing (TO), respectively.

[0027] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between PT-RS ports and DMRS ports.

[0028] In one embodiment, the indication method for the association between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0029] The maximum number of PT-RS ports; the transmission method used by the terminal for uplink transmission; and the actual number of transmission layers of the terminal.

[0030] In one implementation, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0031] In one implementation, in response to the actual number of transport layers being greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated by the S-DCI to the terminal.

[0032] In one embodiment, in response to the maximum number of PT-RS ports being 2, an indication method for determining the association between the PT-RS ports and DMRS ports is determined based on the transmission mode and the actual number of transmission layers.

[0033] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by a 0 bit.

[0034] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, and the actual number of transmission layers being greater than 2, the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of transmission layers supported by the terminal that correspond to different TRP / Panel / TCI / TO PUSCH transmissions.

[0035] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. Combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1 are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports on different antenna panels.

[0036] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO combinations, including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

[0037] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0038] In one embodiment, in response to the transmission mode being Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0039] In one embodiment, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0040] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 4 bits.

[0041] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0042] In one embodiment, 2 bits are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel;

[0043] The corresponding PT-RS port indicator bits on the antenna panel with an actual transmission layer number of 1 are 0.

[0044] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0045] According to a third aspect of the present disclosure, a communication device is provided, comprising:

[0046] The transmitting module is configured to transmit indication information, which includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field. The PT-RS-DMRS association indication field is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and the PT-RS port corresponding to different transmission receiving points (TRP / Panel / Transmission Configuration Indication (TCI) / Transmission Timing (TO), respectively.

[0047] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between PT-RS ports and DMRS ports.

[0048] In one embodiment, the indication method for the association between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0049] The maximum number of PT-RS ports; the transmission method used by the terminal for uplink transmission; and the actual number of transmission layers of the terminal.

[0050] In one implementation, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0051] In one implementation, in response to the actual number of transport layers being greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated by the S-DCI to the terminal.

[0052] In one embodiment, in response to the maximum number of PT-RS ports being 2, an indication method for determining the association between the PT-RS ports and DMRS ports is determined based on the transmission mode and the actual number of transmission layers.

[0053] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by a 0 bit.

[0054] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, and the actual number of transmission layers being greater than 2, the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of transmission layers supported by the terminal that correspond to different TRP / Panel / TCI / TO PUSCH transmissions.

[0055] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. Combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1 are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports on different antenna panels.

[0056] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO combinations, including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

[0057] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0058] In one embodiment, in response to the transmission mode being Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0059] In one embodiment, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0060] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 4 bits.

[0061] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0062] In one embodiment, 2 bits are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel; the number of bits indicating the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0063] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0064] According to a fourth aspect of the present disclosure, a communication device is provided, comprising:

[0065] The acquisition module is configured to acquire indication information, which includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field. The PT-RS-DMRS association indication field is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and the PT-RS port corresponding to different transmission receiving points (TRP / Panel / Transmission Configuration Indication (TCI) / Transmission Timing (TO), respectively.

[0066] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between PT-RS ports and DMRS ports.

[0067] In one embodiment, the indication method for the association between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0068] The maximum number of PT-RS ports; the transmission method used by the terminal for uplink transmission; and the actual number of transmission layers of the terminal.

[0069] In one implementation, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0070] In one implementation, in response to the actual number of transport layers being greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated by the S-DCI to the terminal.

[0071] In one embodiment, in response to the maximum number of PT-RS ports being 2, an indication method for determining the association between the PT-RS ports and DMRS ports is determined based on the transmission mode and the actual number of transmission layers.

[0072] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field is indicated by a 0 bit.

[0073] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, and the actual number of transmission layers being greater than 2, the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of transmission layers supported by the terminal that correspond to different TRP / Panel / TCI / TO PUSCH transmissions.

[0074] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. Combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1 are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports on different antenna panels.

[0075] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO combinations, including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

[0076] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0077] In one embodiment, in response to the transmission mode being Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN) transmission mode, the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0078] In one embodiment, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0079] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 4 bits.

[0080] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0081] In one embodiment, 2 bits are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel;

[0082] The corresponding PT-RS port indicator bits on the antenna panel with an actual transmission layer number of 1 are 0.

[0083] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0084] According to a fifth aspect of the present disclosure, a communication device is provided, comprising:

[0085] processor;

[0086] Memory used to store processor-executable instructions;

[0087] The processor is configured to execute the method described in the first aspect or any embodiment of the first aspect.

[0088] According to a sixth aspect of the present disclosure, a communication device is provided, comprising:

[0089] processor;

[0090] Memory used to store processor-executable instructions;

[0091] The processor is configured to execute the method described in the second aspect or any one of the embodiments of the second aspect.

[0092] According to a seventh aspect of this disclosure, a storage medium is provided, the storage medium storing instructions that, when executed by a processor of a network device, enable the network device to perform the method described in the first aspect or any embodiment of the first aspect.

[0093] According to an eighth aspect of the present disclosure, a storage medium is provided, the storage medium storing instructions that, when executed by a processor of a network device, enable the network device to perform the method described in the second aspect or any embodiment of the second aspect.

[0094] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: When a terminal performs STxMP transmission of PUSCH based on S-DCI scheduling, the network device configures the terminal to send a PT-RS reference signal and send indication information to the terminal. This indication information is used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association between the PT-RS port and the DMRS port in STxMP transmission. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in multi-panel terminal scenarios.

[0095] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0096] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0097] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0098] Figure 2 This is a logic diagram of a multi-panel transmission implementation based on single DCI (S-DCI).

[0099] Figure 3 A schematic diagram of a codeword-to-layer mapping scheme is shown.

[0100] Figures 4A to 4D The diagram shows schematic designs for two configuration types of front-load DMRS.

[0101] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0102] Figure 6 This is a flowchart illustrating a method for determining the association indication between a PT-RS port and a DMRS port according to an exemplary embodiment.

[0103] Figure 7 This is a flowchart illustrating a method for determining the association indication between a PT-RS port and a DMRS port according to an exemplary embodiment.

[0104] Figure 8 This is a flowchart illustrating a communication method according to an exemplary embodiment.

[0105] Figure 9 This is a block diagram of a communication device according to an exemplary embodiment.

[0106] Figure 10 This is a block diagram of a communication device according to an exemplary embodiment.

[0107] Figure 11 This is a block diagram illustrating a communication device according to an exemplary embodiment.

[0108] Figure 12 This is a block diagram illustrating a communication device according to an exemplary embodiment. Detailed Implementation

[0109] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0110] The communication method provided in this disclosure can be applied to... Figure 1 The wireless communication system shown. For example... Figure 1 As shown, this wireless communication system includes network devices and terminals. The terminals connect to the network devices via wireless resources and transmit data. Data transmission between the network devices and terminals is based on beamforming. Furthermore, the network devices and terminals can enhance PUSCH uplink transmission based on Multi-TRP / Multi-panel.

[0111] Understandable Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0112] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks. 5G networks can also be referred to as New Radio (NR). For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0113] Furthermore, the network device involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eBY), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in ​​an NR system, or a component or part of a base station. It should be understood that the specific technology and specific device form used in the embodiments of this disclosure are not limited. In this disclosure, the network device can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area (cell). Furthermore, when it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device.

[0114] Furthermore, the terminal involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to a user. For example, the terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones, customer premise equipment (CPE), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0115] In multi-transmission and Reception Point (multi-TRP) scenarios, uplink enhancement supports the retransmission of the Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) by employing Time Division Multiplexing (TDM) to transmit uplink data to different Transmission and Reception Points (TRPs) in different uplink beam directions. Currently, the bottleneck of communication systems remains uplink transmission rate and coverage. Therefore, the system enhancement direction for the R18 standard mainly considers using multi-antenna panel terminals for simultaneous uplink transmission in Multi-TRP (also known as mTRP or M-TRP) scenarios to improve uplink rate and further enhance transmission reliability.

[0116] In NR, to enhance signal coverage and improve signal quality, PT-RS is configured by the network to the terminal as a UE-specific reference signal. PT-RS is used to track phase noise introduced by the local oscillator in network devices and terminals and for estimating Common Phase Error (CPE). PT-RS can be viewed as an extension of the demodulation reference signal (DMRS) and has a close relationship with it, such as using the same precoding, port correlation, orthogonal sequence generation, and quasi-co-location (QCL) relationships.

[0117] In uplink enhancement, in order to support the simultaneous transmission via multi-panel (STxMP) scheme based on single-DCI (single-downlink control information, S-DCI, also known as single DCI), it is necessary to consider different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, so as to support accurate estimation of CPE in the case of multiple panels of terminal.

[0118] In related technologies, when a network device (e.g., a base station) has multiple TRPs, it can use M-TRP / multiple panels to provide services to terminals, and introduce CoMP (Coordinate MultiPoint) technology to enable the network device to provide a more balanced quality of service within the service area. In one implementation, there is a correspondence between Panel, TRP, TCI (Transmission Configuration Indication), and TO (transmission occasion), therefore, this disclosure uses TRP / Panel / TCI / TO, or multiple TRP / Panel / TCI / TO. In all embodiments of this disclosure, " / " represents "or".

[0119] Unlike single-point transmission, such as a single TRP or panel, CoMP (Multi-Point Cooperative MP) refers to multiple TRPs (Multi-TRPs, mTRPs) / panels providing data services to a single user. Each TRP's antenna array can be divided into several relatively independent antenna panels, allowing for flexible adjustments to the overall array shape and number of ports to suit different deployment scenarios and service requirements. Antenna panels or TRPs can also be connected by optical fibers for more flexible distributed deployment. In the millimeter-wave band, as the wavelength decreases, the obstruction effect caused by obstacles such as people or vehicles becomes more significant. In this context, to ensure link robustness, the collaboration between multiple TRPs or panels can be utilized to transmit / receive from multiple angles and multiple beams, thereby mitigating the adverse effects of obstruction.

[0120] The multiple stations involved in CoMP transmission may correspond to multiple geographically different sites or multiple sectors with different antenna panel orientations. For example, when a terminal receives data from different sites, the spatial differences between the sites will lead to differences in large-scale channel parameters of the receiving link from different sites, such as Doppler frequency offset and delay spread. These large-scale channel parameters will directly affect the adjustment and optimization of filter coefficients during channel estimation. Different channel estimation filter parameters should be used for signals emitted from different sites to adapt to the corresponding channel propagation characteristics.

[0121] Therefore, although the differences in spatial location or angle between sites are transparent to the UE and CoMP operation itself, the impact of these spatial differences on large-scale channel parameters is an important factor that the UE needs to consider when performing channel estimation and reception detection. Therefore, quasi-co-location (QCL) has been introduced in related technologies. QCL means that the large-scale parameters of the channel experienced by a symbol at one antenna port can be inferred from the channel experienced by a symbol at another antenna port. These large-scale parameters can include delay spread, average delay, Doppler spread, Doppler offset, average gain, and spatial reception parameters, etc.

[0122] The so-called QCL (Qualitative Co-location) of two antenna ports under certain large-scale parameters means that these large-scale parameters of the two ports are the same. In other words, as long as certain large-scale parameters of the two ports are consistent, regardless of whether there are differences in their actual physical location or the orientation of their corresponding antenna panels, the terminal can consider that the two ports originate from the same location (i.e., quasi-co-location).

[0123] For some typical application scenarios, considering the possible QCL relationships between various reference signals, and from the perspective of simplifying signaling, NR classifies several large-scale channel parameters into the following four types to facilitate system configuration / indication according to different scenarios:

[0124] ● QCL-TypeA: {Doppler frequency shift, Doppler spread, average delay, delay spread}

[0125] - Except for the space reception parameters, all other large-scale parameters are the same.

[0126] - For frequency bands below 6 GHz, spatial reception parameters may not be required.

[0127] ● QCL-TypeB: {Doppler frequency shift, Doppler extension}

[0128] - For 6GHz only

[0129] ● QCL-TypeC: {Doppler frequency shift, average delay}

[0130] ● QCL-TypeD:{Space Reception Parameters}

[0131] As mentioned earlier, since this parameter is mainly for frequency bands above 6GHz, it is treated as a separate QCL type.

[0132] In the Multi-TRP scenario, the R17 standard enhances uplink support for repeated transmission of the PUSCH / PUCCH channel. This can be achieved by using time-division multiplexing (TDM) to transmit uplink channels to different TRPs in different uplink beam directions.

[0133] Currently, the bottlenecks in communication systems remain in uplink transmission rate and coverage. Therefore, the main focus of system enhancements for the R18 standard is to improve uplink rate and further enhance transmission reliability in Multi-TRP scenarios by enabling terminals to simultaneously transmit multiple TRPs / Panels / TCIs / TOs (STxMP). This is achieved through PUSCH enhancement based on simultaneous transmission of multiple TRPs / Panels / TCIs / TOs at the terminal. Specifically, Multi-TRP-based PUSCH enhancement can be scheduled based on a single downlink control information (DCI) carried by a single Physical Downlink Control Channel (PDCCH), such as single downlink control information (S-DCI) scheduling multiple TRPs / Panels / TCIs / TOs. Alternatively, scheduling can be based on different DCIs carried by different PDCCHs. Figure 2 This is a logic diagram of a multi-panel transmission implementation based on singleDCI (S-DCI). See also... Figure 2 As shown, the terminal (UE) transmits PUSCH1 and PUSCH2 to TRP1 and TRP2 respectively through panel1 and panel2 based on transport layer (Layer) 1 and Layer 2.

[0134] In a multi-panel terminal implementation, multiple physical panels are typically configured, and the capabilities of different panels may vary. For example, they may have different maximum number of Sounding Reference Signal (SRS) ports and support different maximum data transmission layers; one panel might support a maximum of Layer 2 transmission, while another might support a maximum of Layer 4. The network device's 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 device will directly or indirectly indicate the 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.

[0135] The method provided in this disclosure is applicable to the DMRS port indication problem under S-DCI scheduling, that is, how to determine which DMRS ports are used for transmission by PUSCH on different panels.

[0136] Currently, the protocol supports a maximum uplink transmission layer of 4, corresponding to the transmission of one codeword. Therefore, another issue in multi-panel enhancement is how to support two codewords in the uplink for flexible mapping. In related technologies, uplink or downlink layer mapping schemes for data layers 2-4 correspond to the transmission of one codeword (CW). However, this configuration makes it difficult for the same MCS to adapt to the channel conditions of different layers, resulting in performance loss when there are significant differences in channel performance between layers. Therefore, it is necessary to consider applying two CWs for scheduling and transmission for data at layers 2-4, or even just layer 4. Figure 3 A schematic diagram of a codeword-to-layer mapping scheme is shown below. Figure 3 As shown, in STxMP transmission under S-DCI scheduling, codeword 0 is mapped to Layer 0 (CW#0 in Layer 0), and codeword 1 is mapped to Layer 1 (CW#1 in Layer 1) for uplink transmission to TRP0 and TRP1. In this way, network devices can fully utilize inter-layer channel conditions for scheduling. For example, for Layer 3 transmission, when there are significant differences between channel layers, two CWs can be used for scheduling: one CW transmits Layer 1 data, and the other transmits Layer 2 data. This also facilitates data retransmission scheduling and helps improve system throughput. Since the system primarily handles transmissions below Layer 4, this also benefits overall performance optimization.

[0137] For multi-panel uplink synchronous transmission, the cooperative transmission scheduling of one TB of PUSCH based on S-DCI may support one or more of the following transmission schemes: Space Division Multiplexing (SDM), Frequency Division Multiplexing (FDM), and Single Frequency Network (SFN).

[0138] In the SDM spatial division multiplexing scheme, a transport block (TB) of PUSCH transmits different data layers to two different TRPs on the same time and frequency resources through their respective corresponding DMRS ports or port combinations allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different beam / TCI states (i.e., beam indicators).

[0139] The SDM spatial division multiplexing scheme includes two schemes: SDM-A and SDM-B.

[0140] In SDM-A:PUSCH, different parts of a TB are transmitted to two different TRPs on the same time-frequency resources through their respective corresponding DMRS ports or port combinations allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different TCI states, i.e., beams.

[0141] Among them, the SDM-B:PUSCH corresponding to the same TB of different RV versions is transmitted to two different TRPs on the same time and frequency resources through the corresponding DMRS ports or port combinations allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different TCI states, i.e., beams.

[0142] For the FDM frequency division multiplexing scheme, a TB of PUSCH transmits to two different TRPs on non-overlapping frequency domain resources on the same time domain resources through the same DMRS port or port combination allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different TCI states, i.e., beams.

[0143] FDM has two possible schemes: FDM-A and FDM-B.

[0144] In FDM-A:PUSCH, different parts of a TB are transmitted to two different TRPs on non-overlapping frequency domain resources in the same time domain resources through the same DMRS port or port combination allocated on different panels. Different TRPs / Panels / TCIs / TOs are associated with different TCI states, i.e., beams.

[0145] For FDM-B:PUSCH, the same TB corresponding to different RV versions is transmitted to two different TRPs on non-overlapping frequency domain resources in the same time domain resources through the same DMRS port or port combination allocated on different Panels. Different TRPs / Panels / TCIs / TOs are associated with different TCI states, i.e., beams.

[0146] For the SFN scheme, a TB of PUSCH transmits the same data layer to two different TRPs on the same time and frequency resources through the same DMRS port or port combination allocated on different Panels. Different Panels / TRPs / TOs are associated with different TCI states, i.e., beams.

[0147] Furthermore, the application of multiple TRPs / Panels / TCIs / TOs primarily aims to improve coverage at cell edges and provide a more balanced quality of service within the service area. This involves collaborative data transmission among multiple TRPs / Panels / TCIs / TOs using different methods. 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 during handover. Utilizing 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 making it suitable for URLLC services to improve transmission quality and meet reliability requirements.

[0148] In the R16 research phase, PDSCH transmission was enhanced based on the application of downlink multiple 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. Therefore, in the R17 research, enhancements were further made to PDCCH, PUCCH, and PUSCH.

[0149] Among these features, network devices and terminals can enhance PUSCH uplink transmission based on Multi-TRP / Multi-panel. Specifically, PUSCH uplink transmission schemes include codebook-based uplink transmission and non-codebook-based uplink transmission schemes.

[0150] In related technologies, 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, which is more pronounced at high frequencies. Because CPE has a greater impact, compensation for CPE is the primary consideration in NR. In NR, a PT-RS signal is designed for CPE estimation. To enhance signal coverage and improve signal quality, PT-RS is configured by the network to the terminal as a UE-specific reference signal. PT-RS is used to track phase noise introduced by the local oscillator in the gNB and UE. PT-RS can be seen as an extension of DMRS; they have a close relationship, such as using the same precoding, port association, orthogonal sequence generation, and QCL relationships.

[0151] The following description of the embodiments of this disclosure uses the relationship between the PT-RS port and the DMRS port as an example.

[0152] First, let's explain the DMRS port.

[0153] For the PDSCH / PUSCH channel, the data layer for data transmission corresponds to the DMRS port used for demodulation. The DMRS design for the data channel (PDSCH / PUSCH) in the NR system mainly includes the front-load DMRS and the additional DMRS.

[0154] For front-load DMRS, the first occurrence of the DMRS within each scheduling time unit should be as close as possible to the start of the scheduling. The use of front-load DMRS helps the receiver quickly estimate the channel and perform receiver detection, playing a crucial role in reducing latency and supporting so-called self-contained structures. Depending on the total number of orthogonal DMRS ports, front-load DMRS can occupy a maximum of two consecutive orthogonal frequency division multiplexing (OFDM) symbols.

[0155] The design concepts of Front-load DMRS are divided into two categories. The first category (type 1) adopts the COMB+OCC structure, and the second category (type 2) adopts the FDM+OCC structure.

[0156] Figures 4A to 4D The diagrams show two configuration types of front-load DMRS. Figure 4A , Figure 4B The diagram shows the DMRS pattern mapping of one OFDM symbol and two OFDM symbols corresponding to configuration type 1. Figure 4C , Figure 4D The diagram shows the DMRS pattern mapping of one OFDM symbol and two OFDM symbols corresponding to configuration type 2.

[0157] The number of DMRS ports depends on the number of orthogonal ports used for transmission, and front-load DMRS can be configured with a maximum of two OFDM symbols. Considering power utilization efficiency, when using two-symbol front-load DMRS, TD-OCC is used in the time domain in addition to CS or OCC in the frequency domain.

[0158] For low-mobility scenarios, front-load DMRS can achieve channel estimation performance that meets demodulation requirements with relatively low overhead. However, NR systems consider mobility speeds up to 500 km / h. Faced with such a large dynamic range of mobility, in medium / high-speed scenarios, in addition to front-load DMRS, more DMRS symbols need to be inserted during the scheduling duration to meet the estimation accuracy for time-varying channel characteristics. NR systems employ a DMRS structure combining front-load DMRS with additional DMRS of configurable time-domain density. Each set of additional DMRS patterns is a repetition of the front-load DMRS pattern. Therefore, consistent with front-load DMRS, each set of additional DMRS can occupy a maximum of two consecutive DMRS symbols. Depending on the specific use case, up to three sets of additional DMRS can be configured in each scheduling session. The number of additional DMRS depends on the higher-layer parameter configuration and the specific scheduling duration.

[0159] The relevant protocols provide DMRS port allocation methods with different parameter configurations under the uplink cyclic prefix orthogonal frequency-division multiplexing (CP-OFDM) waveform.

[0160] The table below shows the DMRS port allocation for different parameter configurations. In the table, Value represents the code point, Number of DMRS CDM group(s) without data represents the number of DMRS CDM groups not occupied by data, DMRS port represents the DMRS port, and Number of front-load symbols represents the number of front-load symbols.

[0161] Table 1

[0162] 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

[0163] Table 1 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 1, RANK = 1, which is a schematic diagram of DMRS port allocation under DMRS type 1, single symbol, single stream transmission.

[0164] Table 2

[0165] 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

[0166] Table 2 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 1, RANK = 2, which is a schematic diagram of DMRS port allocation in the case of DMRS type 1, single symbol, two-layer transmission.

[0167] Table 3

[0168] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-2 2-7 Reserved Reserved

[0169] Table 3 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 1, RANK = 3, which is a schematic diagram of DMRS port allocation in the case of DMRS type 1, single symbol, three-layer transmission.

[0170] Table 4

[0171] Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-3 2-7 Reserved

[0172] Table 4 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 1, RANK = 4, which is a schematic diagram of DMRS port allocation in the case of DMRS type 1, single symbol, and four-layer transmission.

[0173] Table 5

[0174] Reserved Value Number of DMRS CDM group(s) without data DMRS port(s) 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 Number of front-load symbols Reserved Reserved

[0175] Table 5 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 2, RANK = 1, which is the DMRS port allocation diagram in the case of DMRS type 1, two symbols, and single-stream transmission.

[0176] Table 6

[0177]

[0178]

[0179] Table 6 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 2, RANK = 2, which is a schematic diagram of DMRS port allocation in the case of DMRS type 1, two symbols, and two-layer transmission.

[0180] Table 7

[0181] Reserved Value Number of DMRS CDM group(s) without data DMRS port(s) 0 2 0-2 1 1 2 0,1,4 2 2 2 2,3,6 2 3-15 Number of front-load symbols Reserved Reserved

[0182] Table 7 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 2, RANK = 3, which is a schematic diagram of DMRS port allocation in the case of DMRS type 1, two symbols, and three-layer transmission.

[0183] Table 8

[0184] Reserved Value Number of DMRS CDM group(s) without data DMRS port(s) 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 Number of front-load symbols Reserved Reserved

[0185] Table 8 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 1, maxLength = 2, RANK = 2, which is a schematic diagram of DMRS port allocation in the case of DMRS type 1, two symbols, and four-layer transmission.

[0186] Table 9

[0187]

[0188]

[0189] Table 9 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 1, RANK = 1, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, single symbol, single layer transmission.

[0190] Table 10

[0191] Reserved Value Number of DMRS CDM group(s) without data 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 DMRS port(s) Reserved

[0192] Table 10 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 1, RANK = 2, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, single symbol, two-layer transmission.

[0193] Table 11

[0194] Reserved Value Number of DMRS CDM group(s) without data 0 2 0-2 1 3 0-2 2 3 3-5 3-15 DMRS port(s) Reserved

[0195] Table 11 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 1, RANK = 3, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, single symbol, three-layer transmission.

[0196] Table 12

[0197] Reserved Value Number of DMRS CDM group(s) without data 0 2 0-3 1 3 0-3 2-15 DMRS port(s) Reserved

[0198] Table 12 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 1, RANK = 4, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, single symbol, and four-layer transmission.

[0199] Table 13

[0200] Reserved Value Number of DMRS CDM group(s) without data DMRS port(s) 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 3 0 1 7 3 1 1 8 3 2 1 9 3 3 1 10 3 4 1 11 3 5 1 12 3 0 2 13 3 1 2 14 3 2 2 15 3 3 2 16 3 4 2 17 3 5 2 18 3 6 2 19 3 7 2 20 3 8 2 21 3 9 2 22 3 10 2 23 3 11 2 24 1 0 2 25 1 1 2 26 1 6 2 27 1 7 2 28-31 Number of front-load symbols Reserved Reserved Reserved

[0201] Table 13 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 2, RANK = 1, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, two symbols, and single transmission.

[0202] Table 14

[0203]

[0204]

[0205] Table 14 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 2, RANK = 2, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, two symbols, and two-layer transmission.

[0206] Table 15

[0207] 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

[0208] Table 15 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 2, RANK = 3, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, two symbols, and three-layer transmission.

[0209] Table 16

[0210] 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

[0211] Table 16 shows the DMRS port(s), transform precoder is disabled, dmrs-Type = 2, maxLength = 2, RANK = 4, which is a schematic diagram of DMRS port allocation in the case of DMRS type 2, two symbols, and four-layer transmission.

[0212] The following describes the PT-RS port.

[0213] The number of ports in a PT-RS system is related to the number of phase noise sources. When multiple independent phase noise sources exist, each phase noise source requires a PT-RS port for phase estimation. Related technologies support one downlink PT-RS port and two uplink PT-RS ports.

[0214] Among these technologies, the uplink transmission of PT-RS is configured through higher-layer parameters (DMRS-UplinkConfig, PT-RS-UplinkConfig).

[0215] For example, phaseTrackingRS can be configured for the UE through the higher-layer parameter DMRS-UplinkConfig to configure uplink transmission of PT-RS. If phaseTrackingRS is not configured for the UE in the higher-layer parameter DMRS-UplinkConfig, then PT-RS will not be transmitted in the uplink transmission of the terminal.

[0216] The PT-RS port and DMRS port are associated. This is indicated by the PT-RS-DMRS association indication field.

[0217] In one example, if the higher-layer parameters configure the UE with the parameter UL-PT-RS-present, and the number of PT-RS ports is 1 or 2, then the PT-RS-DMRS association indication field in UL DCI0_1 / 0_2 indicates that a DM-RS port is associated with this PT-RS port. The specific association relationship is shown in the table below:

[0218] For the single-port PT-RS case, Table 17 shows the relationship between the PT-RS port and the DMRS port for uplink PT-RS port 0.

[0219] Value DMRS port 0 <![CDATA[1 st scheduled DMRS port]]> 1 <![CDATA[2 nd scheduled DMRS port]]> 2 <![CDATA[3 rd scheduled DMRS port]]> 3 <![CDATA[4 th scheduled DMRS port]]>

[0220] Table 17

[0221] For the two-port PT-RS case, Table 18 shows the relationship between the PT-RS port and the DMRS port for the uplink PT-RS port 0.

[0222]

[0223] Table 18

[0224] The maximum number of PT-RS ports is determined by configuring maxNrofPorts to 'n2' in the higher-layer parameter PT-RS-UplinkConfig. If n2 indicates a maximum of 2 PT-RS ports, the network device will be divided into two groups using the DMRS ports corresponding to the SRS resources, and each group will be associated with a PT-RS port.

[0225] In the uplink enhancements of R18, it is necessary to consider how to improve STxMP transmission over multi-panel / multi-TRP to support higher throughput and more reliable transmission performance.

[0226] To support simultaneous uplink transmission of multiple panels based on single-DCI, different association mapping indication schemes between PT-RS and DMRS need to be considered under different transmission multiplexing schemes, so as to support accurate estimation of CPE in the case of multiple panels of the terminal.

[0227] This disclosure provides a scheme for a terminal to determine the association relationship between the PT-RS port and the DMRS port in an STxMP transmission scheme. When the terminal performs STxMP transmission of PUSCH based on S-DCI scheduling, the network device configures the terminal to send a PT-RS reference signal and also sends indication information to the terminal. This indication information indicates the association relationship between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association relationship between the PT-RS port and the DMRS port in STxMP transmission. This disclosure allows for different association mapping indication schemes between PT-RS and DMRS under different transmission multiplexing schemes, thus supporting accurate estimation of the CPE in multi-panel terminal scenarios.

[0228] This disclosure provides a communication method applied to a network device. The method includes: sending indication information; the indication information includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field, the PT-RS-DMRS association indication field being used to indicate the association relationship between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM); the high-order 1 bit and the low-order 1 bit of the PT-RS-DMRS association indication field are respectively used to indicate the relationship between the DMRS port and the PT-RS port corresponding to different transmission receiving points (TRP / Panel / Transmission Configuration Indication (TCI) / Transmission Timing (TO).

[0229] Figure 5 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 5 As shown, the communication method used in network devices includes the following steps.

[0230] In step S11, in response to determining that the terminal performs STxMP transmission of PUSCH based on S-DCI scheduling, the terminal is configured to send a PT-RS reference signal.

[0231] In step S12, an indication message is sent to the terminal. The indication message is used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0232] In this embodiment of the disclosure, when the network device determines that the terminal is performing STxMP transmission of PUSCH based on the S-DCI scheduling method, it configures the terminal to enable the PT-RS transmission function to configure the terminal to send a PT-RS reference signal. The network device sends indication information to the terminal to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association between the PT-RS port and the DMRS port in STxMP transmission.

[0233] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, when the network device determines that the terminal is performing STxMP transmission of PUSCH based on S-DCI scheduling, it configures the terminal to send a PT-RS reference signal and sends indication information to the terminal. This indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different association relationships between the PT-RS port and the DMRS port.

[0234] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, the indication method for the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following pieces of information:

[0235] A: Maximum number of PT-RS ports;

[0236] B: The transmission method used by the terminal for uplink transmission;

[0237] C: The actual number of transmission layers for the terminal.

[0238] In one embodiment of the communication method provided in this disclosure, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the maximum number of PT-RS ports.

[0239] In the communication method provided in this embodiment, the network device is configured to enable PT-RS transmission and simultaneously configure the maximum number of PT-RS ports (maxNrofPorts).

[0240] The maximum number of ports for PT-RS includes 1 or 2.

[0241] In one implementation, the network device is configured with a default value of 2 for the maximum number of PT-RS ports.

[0242] The indication method for determining the association between PT-RS ports and DMRS ports based on the maximum number of PT-RS ports in this embodiment of the present disclosure is based on the maximum number of PT-RS ports being 1 or 2, corresponding to different methods for determining the association between PT-RS ports and DMRS ports.

[0243] In one embodiment of the communication method provided in this disclosure, an indication method for determining the association between PT-RS ports and DMRS ports is based on the maximum number of PT-RS ports and the actual number of transmission layers.

[0244] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0245] Figure 6 This is a flowchart illustrating a method for determining the association relationship indication method between a PT-RS port and a DMRS port according to an exemplary embodiment, such as... Figure 6 As shown, it includes the following steps.

[0246] In step S21, the maximum number of PT-RS ports is determined to be 1.

[0247] In step S22, the indication method for the association between the PT-RS port and the DMRS port is determined based on the actual number of transmission layers.

[0248] In this embodiment of the present disclosure, the indication method of the PT-RS-DMRS association relationship indication field can be, for example, by bit indication, which can also be understood as bit overhead.

[0249] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, in response to the actual transmission layer number being greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0250] In one example, in the scheme for determining the association between PT-RS and DMRS by a terminal supporting STxMP transmission, when the network device is configured to enable PT-RS transmission and the maximum number of PT-RS ports (maxNrofPorts) is configured to be 1 (i.e., PT-RS is a single port), the association between PT-RS and DMRS is indicated using 2 bits for cases where the number of transport layers is greater than 1.

[0251] Where the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association indication field is indicated by 2 bits, the mapping method of the PT-RS-DMRS association indication field is the same as that shown in Table 17 for the PT-RS single-port case. In this case, the DMRS port is all the DMRS ports scheduled to the terminal, that is, the number of DMRS ports is the total number of DMRS ports that S-DCI indicates and allocates to the terminal.

[0252] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, in response to the maximum number of PT-RS ports being 2, an indication method for determining the association between PT-RS ports and DMRS ports is determined based on the transmission mode and the actual number of transmission layers.

[0253] Figure 7 This is a flowchart illustrating a method for determining the association relationship indication method between a PT-RS port and a DMRS port according to an exemplary embodiment, such as... Figure 7 As shown, it includes the following steps.

[0254] In step S31, the maximum number of PT-RS ports is determined to be 2.

[0255] In step S32, the indication method for the association between the PT-RS port and the DMRS port is determined based on the transmission mode and the actual number of transmission layers.

[0256] In this embodiment of the disclosure, the transmission method used by the terminal for uplink transmission includes SDM, FDM or SFN.

[0257] In this embodiment of the disclosure, the indication method of the PT-RS-DMRS association indication field has different determination methods corresponding to different transmission methods and / or actual transmission layers.

[0258] In this embodiment of the present disclosure, the indication method of the PT-RS-DMRS association relationship indication field can be, for example, by bit indication, which can also be understood as bit overhead.

[0259] In one implementation, in response to the transmission mode being SDM transmission mode and the actual number of transmission layers being 2, the PT-RS-DMRS association relationship indication field is indicated by a 0 bit.

[0260] In one example, in a scheme where a terminal supporting STxMP transmission determines the association between PT-RS and DMRS, when the network device is configured to enable PT-RS transmission and also configures the maximum number of PT-RS ports (maxNrofPorts) to be 2, i.e., supporting a maximum of 2 PT-RS ports, then when the transmission scheme is SDM, it is necessary to determine the association between the PT-RS ports and DMRS corresponding to different CW / panel / TRP / TCI.

[0261] In one example, when the transmission scheme is SDM and the number of transmission layers is 2, the actual transmission RANK combination corresponding to PUSCH on two different panels is 1+1. Therefore, for each panel, RANK is 1, so there is no need for the indication of PT-RS-DMRS association. That is, the PT-RS-DMRS association indication field is indicated by 0 bits.

[0262] In one embodiment, in response to the transmission mode being SDM transmission mode and the actual number of transmission layers being greater than 2, the indication mode of the PT-RS-DMRS association indication field is determined based on the combination of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

[0263] In one implementation, in response to the terminal's support for PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and 1, combinations of transmission layer 1 and 2, combinations of transmission layer 2 and 1, and combinations of transmission layer 2 and 2, i.e., supporting {1+1, 1+2, 2+1, 2+2} RANK combinations. However, combinations of transmission layer 1 and 3, and combinations of transmission layer 3 and 1, i.e., supporting {1+3, 3+1} RANK combinations, are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports on different antenna panels.

[0264] In this embodiment of the disclosure, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for terminals that only support the {1+1,1+2,2+1,2+2} RANK combination, the PT-RS-DMRS association indication field is indicated by 2 bits. The high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port before or after.

[0265] In one example, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for terminals that only support the {1+1, 1+2, 2+1, 2+2} RANK combination, each panel requires 1 bit for indication, requiring a total of 2 bits. For example, by default, the most significant bit (MSB) indicates PT-RS port 0 on the first panel, and the least significant bit (LSB) indicates PT-RS port 1 on the second panel. The indication method for the PT-RS-DMRS association field is shown in Table 19 below:

[0266]

[0267] Table 19

[0268] In one implementation, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and 1, combinations of transmission layer 1 and 2, combinations of transmission layer 2 and 1, and combinations of transmission layer 2 and 2. It also supports combinations of transmission layer 1 and 3, and combinations of transmission layer 3 and 1. That is, it supports {1+1, 1+2, 2+1, 2+2} RANK combinations while simultaneously supporting {1+3, 3+1} RANK combinations. The PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports in the case of {2+2} RANK combinations, or different PT-RS ports in the case of {1+3, 3+1} RANK combinations.

[0269] In this embodiment of the disclosure, for the case where {1+1, 1+2, 2+1, 2+2} RANK combinations are supported simultaneously with {1+3, 3+1} RANK combinations, the PT-RS-DMRS association indication field indicates different PT-RS ports for the {2+2} RANK combination case through different bits in the 2 bits.

[0270] In this embodiment of the disclosure, for the case where {1+1, 1+2, 2+1, 2+2} RANK combinations are supported simultaneously with {1+3, 3+1} RANK combinations, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of {2+2} RANK combinations through different bits in 2 bits. The high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port before or after.

[0271] In one example, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for a terminal that supports both {1+3, 3+1} RANK combinations in addition to {1+1, 1+2, 2+1, 2+2} RANK combinations, for the {2+2} RANK combination case, 2 bits are needed to indicate the PT-RS on different panels. Each panel requires 1 bit, for a total of 2 bits. For example, by default, the MSB indicates PT-RS port 0 on the first panel, and the LSB indicates PT-RS port 1 on the second panel.

[0272] In this embodiment of the disclosure, for the case where {1+1, 1+2, 2+1, 2+2} RANK combination is supported while {1+3, 3+1} RANK combination is also supported, the PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0273] In this embodiment of the disclosure, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for the case that supports the {1+1, 1+2, 2+1, 2+2} RANK combination while also supporting the {1+3, 3+1} RANK combination, the PT-RS-DMRS association relationship indication field is indicated by 2 bits. The 2 bits are used to indicate the association relationship between the PT-RS port corresponding to the antenna panel with an actual transmission layer of 3 and the corresponding 3 DMRS ports on the antenna panel; the number of bits indicating the PT-RS port corresponding to the antenna panel with an actual transmission layer of 1 is 0.

[0274] In one example, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for a terminal that supports both {1+3, 3+1} RANK combinations on top of {1+1, 1+2, 2+1, 2+2} RANK combinations, for the {1+3, 3+1} RANK combination case, 2 bits are needed to indicate the association between the PT-RS port and DMRS transmitted on the panel with RANK > 1. The PT-RS port transmitted on the other panel with RANK = 1 does not need to be indicated. The indication method for the PT-RS-DMRS association field is shown in Table 20 below:

[0275]

[0276] Table 20

[0277] In Table 20, under the multi-panel co-transmission mode, each panel supports a maximum of 3 DMRS. The PT-RS port is 0 or 1.

[0278] In one implementation, in response to the transmission mode being FDM or SFN, and the actual number of transmission layers being greater than 1, the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0279] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is greater than 1, it is necessary to indicate the association between the PT-RS and DMRS ports for the two panels respectively.

[0280] In one implementation, in response to whether the transmission mode is FDM or SFN, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0281] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is 2, each panel requires 1 bit of indication. For example, by default, the MSB indicates PT-RS port 0 on the first panel, and the LSB indicates PT-RS port 1 on the second panel. The indication method of the PT-RS-DMRS association field is shown in Table 19.

[0282] In one embodiment of this disclosure, in response to the transmission mode being FDM or SFN, and the actual number of transmission layers being greater than 2, the PT-RS-DMRS association indication field uses 4 bits to indicate different PT-RS ports of different antenna panels.

[0283] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is greater than 2, each panel requires 2 bits of indication, which can be used to extend the design of the existing single-port PT-RS table. The indication method of the PT-RS-DMRS association field is shown in Table 21:

[0284]

[0285] Table 21

[0286] In Table 21, under the multi-panel transmission mode, each panel supports a maximum of 3 DMRS connections. The PT-RS ports are 0 and 1.

[0287] In one embodiment of this disclosure, in response to the transmission mode being FDM or SFN, and the actual number of transmission layers being greater than 2, the PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports of different antenna panels.

[0288] In one embodiment, the transmission mode is FDM transmission mode or SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field is indicated by 2 bits. The high bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port before or after, and the low bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port before or after.

[0289] In one example, the transmission mode is FDM or SFN, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field is indicated by 2 bits, where 1 bit MSB indicates one of the first two / last two DMRS ports of the first panel and associated PT-RS port 0, and 1 bit LSB indicates one of the first two / last two DMRS ports of the second panel and associated PT-RS port 1.

[0290] The communication method provided in this disclosure, when a terminal performs STxMP transmission of PUSCH based on S-DCI scheduling, configures the terminal to send a PT-RS reference signal and sends indication information to the terminal. This indication information is used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association between the PT-RS port and the DMRS port in STxMP transmission. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in multi-panel terminal scenarios.

[0291] Based on the same concept, this disclosure also provides a communication method applied to a terminal. The method may include: acquiring indication information; the indication information includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field, the PT-RS-DMRS association indication field being used to indicate the association relationship between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM); the high-order bit and low-order bit of the PT-RS-DMRS association indication field are respectively used to indicate the relationship between the DMRS port and the PT-RS port corresponding to different transmission receiving points (TRP / Panel / Transmission Configuration Indication (TCI) / Transmission Timing (TO).

[0292] Figure 8 This is a flowchart illustrating a communication method according to an exemplary embodiment, such as... Figure 8 As shown, the communication method used in the terminal includes the following steps.

[0293] In step S41, the indication information sent by the network device is obtained. The indication information is used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0294] In step S42, STxMP transmission of PUSCH is performed based on the S-DCI scheduling method, and a PT-RS reference signal is sent based on the association between the PT-RS port and the DMRS port indicated by the indication information.

[0295] In this embodiment of the disclosure, the terminal performs STxMP transmission of PUSCH based on the S-DCI scheduling method and is configured to receive indication information sent by the network device when sending PT-RS reference signals. This indication information is used to indicate the association between the PT-RS port and the DMRS port when the terminal sends PT-RS reference signals, so as to enhance the association between the PT-RS port and the DMRS port in STxMP transmission.

[0296] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between the PT-RS port and the DMRS port.

[0297] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, the indication method for the association relationship between the PT-RS port and the DMRS port is determined based on at least one of the following pieces of information:

[0298] A: Maximum number of PT-RS ports;

[0299] B: The transmission method used by the terminal for uplink transmission;

[0300] C: The actual number of transmission layers for the terminal.

[0301] In one embodiment of the communication method provided in this disclosure, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the maximum number of PT-RS ports.

[0302] In the communication method provided in this embodiment, the network device is configured to enable PT-RS transmission and simultaneously configure the maximum number of PT-RS ports (maxNrofPorts).

[0303] The maximum number of ports for PT-RS includes 1 or 2.

[0304] In one implementation, the network device is configured with a default value of 2 for the maximum number of PT-RS ports.

[0305] The indication method for determining the association between PT-RS ports and DMRS ports based on the maximum number of PT-RS ports in this embodiment of the present disclosure is based on the maximum number of PT-RS ports being 1 or 2, corresponding to different methods for determining the association between PT-RS ports and DMRS ports.

[0306] In one embodiment of the communication method provided in this disclosure, an indication method for determining the association between PT-RS ports and DMRS ports is based on the maximum number of PT-RS ports and the actual number of transmission layers.

[0307] In one embodiment of the uplink PT-RS port indication method provided in this disclosure, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0308] In this embodiment of the disclosure, the transmission method used by the terminal for uplink transmission includes SDM, FDM or SFN.

[0309] In this embodiment of the disclosure, the indication method of the PT-RS-DMRS association indication field has different determination methods corresponding to different transmission methods and / or actual transmission layers.

[0310] In this embodiment of the present disclosure, the indication method of the PT-RS-DMRS association relationship indication field can be, for example, by bit indication, which can also be understood as bit overhead.

[0311] In one implementation, in response to the transmission mode being SDM transmission mode and the actual number of transmission layers being 2, the PT-RS-DMRS association relationship indication field is indicated by a 0 bit.

[0312] In one embodiment, in response to the transmission mode being SDM transmission mode and the actual number of transmission layers being greater than 2, the indication mode of the PT-RS-DMRS association indication field is determined based on the combination of transmission layers supported by the terminal for PUSCH transmission corresponding to different TRP / Panel / TCI / TO.

[0313] In one implementation, in response to the terminal's support for PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and 1, combinations of transmission layer 1 and 2, combinations of transmission layer 2 and 1, and combinations of transmission layer 2 and 2, i.e., supporting {1+1, 1+2, 2+1, 2+2} RANK combinations. However, combinations of transmission layer 1 and 3, and combinations of transmission layer 3 and 1, i.e., supporting {1+3, 3+1} RANK combinations, are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports on different antenna panels.

[0314] In this embodiment of the disclosure, when the transmission scheme is SDM and the number of transmission layers is greater than 2, for terminals that only support the {1+1,1+2,2+1,2+2} RANK combination, the PT-RS-DMRS association indication field is indicated by 2 bits. The high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port before or after.

[0315] In one implementation, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and 1, combinations of transmission layer 1 and 2, combinations of transmission layer 2 and 1, and combinations of transmission layer 2 and 2. It also supports combinations of transmission layer 1 and 3, and combinations of transmission layer 3 and 1. That is, it supports {1+1, 1+2, 2+1, 2+2} RANK combinations while simultaneously supporting {1+3, 3+1} RANK combinations. The PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports in the case of {2+2} RANK combinations, or different PT-RS ports in the case of {1+3, 3+1} RANK combinations.

[0316] In this embodiment of the disclosure, for the case where {1+1, 1+2, 2+1, 2+2} RANK combinations are supported simultaneously with {1+3, 3+1} RANK combinations, the PT-RS-DMRS association indication field indicates different PT-RS ports for the {2+2} RANK combination case through different bits in the 2 bits.

[0317] In this embodiment of the disclosure, for the case where {1+1, 1+2, 2+1, 2+2} RANK combinations are supported simultaneously with {1+3, 3+1} RANK combinations, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of {2+2} RANK combinations through different bits in 2 bits. The high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port before or after.

[0318] In one implementation, in response to the transmission mode being FDM or SFN, and the actual number of transmission layers being greater than 1, the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0319] In one example, when the transmission scheme is FDM or SFN and the number of transmission layers is greater than 1, it is necessary to indicate the association between the PT-RS and DMRS ports for the two panels respectively.

[0320] In one implementation, in response to whether the transmission mode is FDM or SFN, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels using 2 bits.

[0321] In one embodiment of this disclosure, in response to the transmission mode being FDM or SFN, and the actual number of transmission layers being greater than 2, the PT-RS-DMRS association indication field uses 4 bits to indicate different PT-RS ports of different antenna panels.

[0322] In one embodiment of this disclosure, in response to the transmission mode being FDM or SFN, and the actual number of transmission layers being greater than 2, the PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports of different antenna panels.

[0323] In one embodiment, the transmission mode is FDM transmission mode or SFN transmission mode, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association relationship indication field is indicated by 2 bits. The high bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port before or after, and the low bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port before or after.

[0324] The communication method provided in this disclosure, when a terminal performs STxMP transmission of PUSCH based on S-DCI scheduling, is configured to send a PT-RS reference signal and receive indication information sent by a network device. This indication information indicates the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal, thereby enhancing the association between the PT-RS port and the DMRS port in STxMP transmission. Different association mapping indication schemes between PT-RS and DMRS are considered under different transmission multiplexing schemes, thereby supporting accurate estimation of CPE in multi-panel terminal scenarios.

[0325] It should be noted that the communication method applied to network devices in this embodiment is similar in execution process to the communication method applied to terminals. For details, please refer to the description of the above-mentioned related embodiments, which will not be repeated here.

[0326] The communication method provided in this disclosure is applicable to the process of a terminal interacting with a network device to implement an uplink PT-RS port indication. In the method of a terminal interacting with a network device to implement an uplink PT-RS port indication, the terminal and the network device respectively have the relevant functions to implement the communication method involved in the above embodiments, so they will not be described again here.

[0327] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0328] Based on the same concept, embodiments of this disclosure also provide a communication device.

[0329] It is understood that the communication device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware 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 the technical solutions of this disclosure.

[0330] Figure 9 This is a block diagram illustrating a communication device according to an exemplary embodiment. (Refer to...) Figure 9 The communication device 100 includes at least one of a processing module 101 and a transmitting module 102.

[0331] The processing module 101 is configured to configure the terminal to send a PT-RS reference signal when it is determined that the terminal is performing STxMP of PUSCH based on the S-DCI scheduling method; the sending module 102 is configured to send indication information to the terminal, the indication information being used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal.

[0332] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between the PT-RS port and the DMRS port.

[0333] In one implementation, the method for indicating the association between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0334] Maximum number of PT-RS ports; transmission method used by the terminal for uplink transmission; actual number of transmission layers of the terminal.

[0335] In one implementation, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0336] In one implementation, in response to an actual transport layer number greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0337] In one implementation, in response to the maximum number of PT-RS ports being 2, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the transmission mode and the actual number of transmission layers.

[0338] In one implementation, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field is indicated by 0 bits.

[0339] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode and the actual number of transmission layers being greater than 2, the indication method of the PT-RS-DMRS association indication field is determined based on the combination of transmission layers supported by the terminal for PUSCH transmissions corresponding to different TRP / Panel / TCI / TO.

[0340] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. Combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1 are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports of different antenna panels.

[0341] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO combinations including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

[0342] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0343] In one implementation, in response to the transmission mode being Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN) transmission mode, and the actual number of transmission layers being greater than 1, the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0344] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports of different antenna panels.

[0345] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field uses 4 bits to indicate different PT-RS ports of different antenna panels.

[0346] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0347] In one embodiment, 2 bits are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel; the number of bits indicating the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 1 is 0.

[0348] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0349] Figure 10 This is a block diagram illustrating a communication device according to an exemplary embodiment. (Refer to...) Figure 10 The communication device 200 includes at least one of an acquisition module 201 and a transmission module 202.

[0350] The acquisition module 201 is configured to acquire indication information sent by the network device. The indication information is used to indicate the association between the PT-RS port and the DMRS port when the terminal sends the PT-RS reference signal. The sending module 202 is configured to perform STxMP of PUSCH based on the S-DCI scheduling method and send the PT-RS reference signal based on the association between the PT-RS port and the DMRS port indicated by the indication information.

[0351] In one embodiment, the indication information includes a PT-RS-DMRS association indication field, and different indication methods of the PT-RS-DMRS association indication field are used to indicate different associations between the PT-RS port and the DMRS port.

[0352] In one implementation, the method for indicating the association between the PT-RS port and the DMRS port is determined based on at least one of the following information:

[0353] Maximum number of PT-RS ports; transmission method used by the terminal for uplink transmission; actual number of transmission layers of the terminal.

[0354] In one implementation, in response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the actual number of transmission layers.

[0355] In one implementation, in response to an actual transport layer number greater than 1, the PT-RS-DMRS association indication field is indicated by 2 bits, and the number of DMRS ports is the total number of all DMRS ports allocated to the terminal by the S-DCI.

[0356] In one implementation, in response to the maximum number of PT-RS ports being 2, an indication method is used to determine the association between PT-RS ports and DMRS ports based on the transmission mode and the actual number of transmission layers.

[0357] In one implementation, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field is indicated by 0 bits.

[0358] In one embodiment, in response to the transmission mode being spatial division multiplexing (SDM) transmission mode and the actual number of transmission layers being greater than 2, the indication method of the PT-RS-DMRS association indication field is determined based on the combination of transmission layers supported by the terminal for PUSCH transmissions corresponding to different TRP / Panel / TCI / TO.

[0359] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. Combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1 are not supported. The PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports of different antenna panels.

[0360] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO combinations including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

[0361] In one embodiment, in response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layer numbers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

[0362] In one implementation, in response to the transmission mode being Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN) transmission mode, and the actual number of transmission layers being greater than 1, the PT-RS-DMRS association indication field indicates different PT-RS ports of different antenna panels through different bits.

[0363] In one implementation, the actual number of transmission layers is 2, and the PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports of different antenna panels.

[0364] In one implementation, the actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field uses 4 bits to indicate different PT-RS ports of different antenna panels.

[0365] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0366] In one embodiment, 2 bits are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer number of 3 and the corresponding 3 DMRS ports on the antenna panel.

[0367] The corresponding PT-RS port indicator bits on the antenna panel with an actual transmission layer number of 1 are 0.

[0368] In one embodiment, the high-order 1 bit is used to indicate the first PT-RS port of the first antenna panel in the two DMRS antenna ports that share the first PT-RS port, either before or after, and the low-order 1 bit is used to indicate the second PT-RS port of the second antenna panel in the two DMRS antenna ports that share the second PT-RS port, either before or after.

[0369] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0370] Figure 11 This is a block diagram illustrating an apparatus 300 for uplink PT-RS port indication according to an exemplary embodiment. Apparatus 300 can be provided as a terminal. For example, apparatus 300 can be a mobile phone, computer, digital broadcasting terminal, messaging transceiver, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0371] Reference Figure 11 The device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0372] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0373] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0374] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0375] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0376] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0377] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0378] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0379] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0380] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0381] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0382] Figure 12 This is a block diagram illustrating an apparatus 400 for uplink PT-RS port indication according to an exemplary embodiment. For example, apparatus 400 may be provided as a network device. (Refer to...) Figure 12 The apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as application programs, that can be executed by the processing component 422. The application programs stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 422 is configured to execute instructions to perform the methods described above.

[0383] Device 400 may also include a power supply component 426 configured to perform power management of device 400, a wired or wireless network interface 450 configured to connect device 400 to a network, and an input / output (I / O) interface 458. Device 400 may operate on an operating system stored in memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0384] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by a processing component 422 of the apparatus 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0385] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0386] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0387] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0388] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0389] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A communication method, characterized in that, Applied to network devices, the method includes: Send instruction information; The indication information includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field, which is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and PT-RS port corresponding to different transmission receiving points TRP / Panel / Transmission Configuration Indication TCI / Transmission Timing TO, respectively.

2. The method according to claim 1, characterized in that, The different indication methods of the PT-RS-DMRS association indication field are used to indicate the different association relationships between the PT-RS port and the DMRS port.

3. The method according to claim 2, characterized in that, The method for indicating the association between the PT-RS port and the DMRS port is determined based on at least one of the following information: Maximum number of PT-RS ports; The transmission method used by the terminal for uplink transmission; The actual number of transmission layers of the terminal.

4. The method according to claim 3, characterized in that, In response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the actual number of transmission layers.

5. The method according to claim 4, characterized in that, In response to the actual number of transport layers being greater than 1, the PT-RS-DMRS association indication field indicates the number of DMRS ports by using 2 bits, and the number of DMRS ports is the total number of all DMRS ports that the S-DCI indicates to the terminal.

6. The method according to claim 2, characterized in that, In response to the maximum number of PT-RS ports being 2, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the transmission mode and the actual number of transmission layers.

7. The method according to claim 6, characterized in that, Since the transmission mode is spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field does not need to be set with bit information for indication.

8. The method according to claim 6, characterized in that, In response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of transmission layers supported by the terminal that correspond to different TRP / Panel / TCI / TO PUSCH transmissions.

9. The method according to claim 8, characterized in that, In response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including combinations of transmission layer 1 and 1, combinations of transmission layer 1 and 2, combinations of transmission layer 2 and 1, and combinations of transmission layer 2 and 2, but not combinations of transmission layer 1 and 3 or combinations of transmission layer 3 and 1, the PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports of different antenna panels.

10. The method according to claim 8, characterized in that, In response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

11. The method according to claim 8, characterized in that, In response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

12. The method according to claim 6, characterized in that, In response to the transmission mode being either Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN), the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association field indicates different PT-RS ports of different antenna panels through different bits.

13. The method according to claim 12, characterized in that, The actual number of transmission layers is 2, and the PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports of different antenna panels.

14. The method according to claim 12, characterized in that, The actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field uses 4 bits to indicate different PT-RS ports of different antenna panels.

15. The method according to claim 11, characterized in that, The 2 bits of the PT-RS-DMRS association indication field are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer of 3 and the corresponding 3 DMRS ports on the antenna panel. For antenna panels with an actual transmission layer of 1, the corresponding PT-RS port does not need to be set with bit information for indication.

16. A communication method, characterized in that, Applied to a terminal, the method includes: Obtain instruction information; The indication information includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field, which is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and PT-RS port corresponding to different transmission receiving points TRP / Panel / Transmission Configuration Indication TCI / Transmission Timing TO, respectively.

17. The method according to claim 16, characterized in that, The different indication methods of the PT-RS-DMRS association indication field are used to indicate the different association relationships between the PT-RS port and the DMRS port.

18. The method according to claim 17, characterized in that, The method for indicating the association between the PT-RS port and the DMRS port is determined based on at least one of the following information: Maximum number of PT-RS ports; The transmission method used by the terminal for uplink transmission; The actual number of transmission layers of the terminal.

19. The method according to claim 18, characterized in that, In response to the maximum number of PT-RS ports being 1, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the actual number of transmission layers.

20. The method according to claim 19, characterized in that, In response to the actual number of transport layers being greater than 1, the PT-RS-DMRS association indication field indicates the number of DMRS ports by using 2 bits, and the number of DMRS ports is the total number of all DMRS ports that the S-DCI indicates to the terminal.

21. The method according to claim 17, characterized in that, In response to the maximum number of PT-RS ports being 2, an indication method is used to determine the association between the PT-RS ports and DMRS ports based on the transmission mode and the actual number of transmission layers.

22. The method according to claim 21, characterized in that, Since the transmission mode is spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is 2, and the PT-RS-DMRS association relationship indication field does not need to be set with bit information for indication.

23. The method according to claim 21, characterized in that, In response to the transmission mode being spatial division multiplexing (SDM) transmission mode, the actual number of transmission layers is greater than 2, and the indication method of the PT-RS-DMRS association relationship indication field is determined based on the combination of transmission layers supported by the terminal that correspond to different TRP / Panel / TCI / TO PUSCH transmissions.

24. The method according to claim 23, characterized in that, In response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including combinations of transmission layer 1 and 1, combinations of transmission layer 1 and 2, combinations of transmission layer 2 and 1, and combinations of transmission layer 2 and 2, but not combinations of transmission layer 1 and 3 or combinations of transmission layer 3 and 1, the PT-RS-DMRS association indication field is indicated by 2 bits, with different bits used to indicate different PT-RS ports of different antenna panels.

25. The method according to claim 23, characterized in that, In response to the terminal supporting PUSCH transmission combinations corresponding to different TRP / Panel / TCI / TO, including combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2, and also supporting combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1, the PT-RS-DMRS association indication field indicates different PT-RS ports in the case of combinations of transmission layer 2 and transmission layer 2 through different bits in 2 bits.

26. The method according to claim 23, characterized in that, In response to the terminal supporting PUSCH transmissions corresponding to different TRP / Panel / TCI / TO, the combinations of transmission layers include combinations of transmission layer 1 and transmission layer 1, combinations of transmission layer 1 and transmission layer 2, combinations of transmission layer 2 and transmission layer 1, and combinations of transmission layer 2 and transmission layer 2. It also supports combinations of transmission layer 1 and transmission layer 3 and combinations of transmission layer 3 and transmission layer 1. The PT-RS-DMRS association indication field uses 2 bits to indicate the association between the PT-RS port and the DMRS port on the antenna panel with a transmission layer number greater than 1.

27. The method according to claim 21, characterized in that, In response to the transmission mode being either Frequency Division Multiplexing (FDM) or Single Frequency Network (SFN), the actual number of transmission layers is greater than 1, and the PT-RS-DMRS association field indicates different PT-RS ports of different antenna panels through different bits.

28. The method according to claim 27, characterized in that, The actual number of transmission layers is 2, and the PT-RS-DMRS association indication field uses 2 bits to indicate different PT-RS ports of different antenna panels.

29. The method according to claim 27, characterized in that, The actual number of transmission layers is greater than 2, and the PT-RS-DMRS association indication field uses 4 bits to indicate different PT-RS ports of different antenna panels.

30. The method according to claim 26, characterized in that, The 2 bits of the PT-RS-DMRS association indication field are used to indicate the association between the PT-RS port corresponding to the antenna panel with an actual transmission layer of 3 and the corresponding 3 DMRS ports on the antenna panel. For antenna panels with an actual transmission layer of 1, the corresponding PT-RS port does not need to be set with bit information for indication.

31. A communication device, characterized in that, include: The transmitting module is configured to transmit indication information, which includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field. The PT-RS-DMRS association indication field is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and PT-RS port corresponding to different transmission receiving points TRP / Panel / Transmission Configuration Indication TCI / Transmission Timing TO, respectively.

32. A communication device, characterized in that, include: The acquisition module is configured to acquire indication information, which includes a phase tracking reference signal PT-RS-demodulation reference signal DMRS association indication field. The PT-RS-DMRS association indication field is used to indicate the association between the PTRS port and the DMRS port of the terminal under spatial division multiplexing (SDM). The high-order 1 bit and low-order 1 bit of the PT-RS-DMRS association indication field are used to indicate the relationship between the DMRS port and PT-RS port corresponding to different transmission receiving points TRP / Panel / Transmission Configuration Indication TCI / Transmission Timing TO, respectively.

33. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1 to 15.

34. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method according to any one of claims 16 to 30.

35. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of the network device, enable the network device to perform the method described in any one of claims 1 to 15.

36. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the terminal's processor, enable the terminal to perform the method described in any one of claims 16 to 30.

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