Transmission method, terminal and network side device

Abstract

The application discloses a transmission method, a terminal and a network-side device, and belongs to the technical field of communication. The method of the application embodiment comprises the following steps: a terminal sends target uplink transmission; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, power parameter values of at least two DMRS ports in the N DMRS ports are different, and the N is an integer greater than 1.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a transmission method, a terminal, and network-side equipment. Background Technology

[0002] In related technologies, when performing uplink transmissions such as Physical Uplink Shared Channel (PUSCH), the same transmit power is usually used for different Demodulation Reference Signal (DMRS) ports in the uplink transmission to reduce overhead and improve robustness.

[0003] However, for network-side devices, the different channel conditions (such as channel fading) experienced by different DMRS ports during uplink transmission may result in significant differences in the power of the DMRS received by the network-side devices from different DMRS ports during uplink transmission, thus affecting uplink transmission performance. Summary of the Invention

[0004] This application provides a transmission method, terminal, and network-side device that can solve the problem of large power differences in DMRS at different DMRS ports during uplink transmission, which affects uplink transmission performance.

[0005] In a first aspect, a transmission method is provided, comprising: a terminal sending a target uplink transmission; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0006] Secondly, a transmission method is provided, comprising: a network-side device receiving a target uplink transmission from a terminal; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0007] Thirdly, a transmission device is provided, comprising: a transmitting module for transmitting a target uplink transmission; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0008] Fourthly, a transmission apparatus is provided, comprising: a network-side device receiving a target uplink transmission from a terminal; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0009] Fifthly, a transmission device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0010] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0011] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to send a target uplink transmission; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0012] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0013] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to receive a target uplink transmission from a terminal; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0014] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0015] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0016] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0017] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0018] In this embodiment, the terminal transmits a target uplink transmission, which corresponds to N DMRS ports. At least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1. Therefore, by using different power parameter values ​​for DMRS transmission at at least two DMRS ports, the problem in related technologies where different DMRS ports are affected by different channel conditions during uplink transmission, leading to large differences in the received power of the DMRS from different DMRS ports, is avoided. This improves the transmission performance of the target uplink transmission. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a wireless communication system provided in an exemplary embodiment of this application.

[0020] Figure 2 This is one of the flowcharts illustrating a transmission method provided in an exemplary embodiment of this application.

[0021] Figure 3 This is a second schematic flowchart of a transmission method provided in an exemplary embodiment of this application.

[0022] Figure 4 This is one of the structural schematic diagrams of a transmission device provided in an exemplary embodiment of this application.

[0023] Figure 5 This is a second schematic diagram of the structure of a transmission device provided in an exemplary embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the structure of a terminal provided in an exemplary embodiment of this application.

[0026] Figure 8 This is a schematic diagram of the structure of a network-side device provided in an exemplary embodiment of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0028] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0030] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0031] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. Furthermore, terminal 11 can be any of the terminals described above, or it can be a chip within a terminal, such as a modem chip, a system-on-a-chip (SoC), etc. It should be noted that the specific type of terminal 11 is not limited in the embodiments of this application.

[0032] Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, wireless local area network (WLAN) access points (APs), or wireless Fidelity (WiFi) nodes, etc. Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0033] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support Function. Support Function (BSF), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (such as 6G), it is also within the scope of protection of this application.

[0034] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0035] In addition, for ease of understanding, the relevant technologies in the technical solution of this application are introduced here.

[0036] 1. Physical Uplink Shared Channel (PUSCH) Power The significance of power control lies in maintaining power, improving performance, and reducing interference, among other things.

[0037] "Maintaining power" refers to adjusting the power based on the distance between the terminal and network-side equipment (such as a base station) to ensure that the power of all terminal signals reaching the base station is similar.

[0038] "Performance enhancement" refers to dynamically adjusting power based on channel changes to achieve precise and rapid power regulation.

[0039] "Reducing interference" refers to reducing power leakage in adjacent channels, reducing interference between users and between cells, and extending battery life.

[0040] Based on this, if the terminal transmits PUSCH using parameter set configuration index j and PUSCH power control adjustment state index l on the active uplink bandwidth portion (UL BWP) b of carrier f in serving cell c, then the terminal determines the transmission power of PUSCH in PUSCH transmission timing i. As shown in equation (1) below.

[0041] (1) The meanings of the parameters in equation (1) are as follows.

[0042] P0: Represents the target power value at the open-loop receiver. Generally, the larger the P0, the higher the UL transmission power and the higher the received signal-to-interference-plus-noise ratio (SINR).

[0043] PL: Represents path loss estimation, obtained through path loss reference signal (PLRS). PLRS can be, but is not limited to, a synchronization signal block (SSB) and a channel state information reference signal (CSI-RS). Typically, the terminal needs to maintain multiple path loss estimates and invoke them based on network configuration or indicated indexes.

[0044] (or alpha): Represents a partial path loss compensation factor, with a value range of [0,1]. Specifically, for PUSCH and Sounding Reference Signal (SRS), when alpha is 0, path loss is completely ignored; when alpha is 1, path loss is fully compensated. In this case, the uplink power of the cell center terminal is too low (i.e., overall throughput is too low), and the uplink power of the cell edge terminal is too high (i.e., inter-cell interference is too high).

[0045] For the Physical Uplink Control Channel (PUCCH) and the Physical Random Access Channel (PRACH), throughput is not required, but reliability is required, so the alpha value is 1.

[0046] f(l): Represents the power control adjustment state value, which is divided into cumulative mode and absolute assignment mode.

[0047] CLI: Used to represent the closed-loop power control index (closedLoopIndex), with a value of l=0 or l=1.

[0048] It is worth noting that for PUSCH and PUCCH, PUSCH and PUCCH share the same Transmission Configuration Indicator state (TCI state). The TCI state configuration contains indices of the P0, alpha, and CLI parameter sets applied to PUSCH and PUCCH, respectively. The TCI state also contains a PLRS index.

[0049] 2. DMRS scaling factor For uplinks with DMRS, such as PUSCH, the terminal can assume that the ratio of Energy Per Resource Element (EPRE) of PUSCH to EPRE of DMRS is... [dB], therefore, Table 1 below is determined based on the number of DM-RS CDM groups without data and the type of DMRS. The DMRS scaling factor is specified in Section 6.4.1.1.3 of [4, TS 38.211] of the core protocol of the 3GPP 5G NR standard. It can be derived from the formula Provided.

[0050] Table 1: Ratio of PUSCH's EPRE to DMRS's EPRE

[0051] For PUSCH repetition type B, the DMRS transmission process applies the allocated duration for each actual repetition separately. Terminals should not be instructed to use antenna port configurations that are invalid for any actual repetition's allocated duration.

[0052] Based on this, the technical solutions provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0053] like Figure 2 The diagram shown is a flowchart of a transmission method 200 provided in an exemplary embodiment of this application. This method 200 can be executed by, but is not limited to, a terminal, specifically by hardware and / or software installed in the terminal. In this embodiment, the method 200 may include at least the following steps.

[0054] S210, the terminal sends the target uplink transmission.

[0055] The target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

[0056] The phrase "at least two of the N DMRS ports have different power parameter values" can be understood as follows: the power parameter values ​​of the N DMRS ports are all different; or, some of the N DMRS ports have the same power parameter values, while the power parameter values ​​of other DMRS ports are all different; or, the N DMRS ports can be divided into X groups, where the power parameter values ​​of each group of DMRS ports are different, etc., without any restrictions.

[0057] For example, assuming N=2, the power parameter values ​​of the two DMRS ports can be different.

[0058] Assuming N=4, then the power parameter values ​​of any two DMRS ports out of the four DMRS ports are the same, such as the power parameter values ​​of DMRS port 1 and DMRS port 2 being the same, and the power parameter values ​​of DMRS port 3 and DMRS port 4 being the same; or, the power parameter values ​​of three of the four DMRS ports are different from the power parameter value of the other DMRS port, such as the power parameter values ​​of DMRS port 1, DMRS port 2, and DMRS port 3 being the same, but different from the power parameter value of DMRS port 4. This is not a restriction.

[0059] It is understood that in this embodiment, when performing the target uplink transmission, power configuration (or adjustment or control) is performed at the DMRS port level in the target uplink transmission, so that the power parameter values ​​(such as power value, EPER ratio, EPER, etc.) of at least two of the N DMRS ports corresponding to the target uplink transmission are different. This avoids the problem in related technologies where different DMRS ports in the uplink transmission are affected by different channels, resulting in a large difference in the DMRS received power of different DMRS ports received by the network-side device, due to the different channel effects on different DMRS ports in the uplink transmission when each DMRS port uses the same transmit power. This improves the transmission performance of the target uplink transmission.

[0060] In this embodiment, the power parameter values ​​of at least some DMRS ports can be determined in various ways. For example, the power parameter values ​​of at least some DMRS ports can be adjusted based on the predicted Channel State Information (CSI) of the channels that the different DMRS ports of the target uplink channel will experience or the historical CSI of the channels that have already been experienced. For example, power can be boosted for weak DMRS ports in the target uplink transmission to compensate for path loss caused by factors such as channel fading, thus avoiding the problem of large power differences between different DMRS ports received by the receiver; while power can be backed up for strong DMRS ports in the target uplink transmission to avoid the problem of large power differences between different DMRS ports received by the receiver, while also reducing inter-layer interference.

[0061] It should be noted that the aforementioned "weak DMRS port" can be understood as a DMRS port whose channel influence is greater than a first predetermined value, and the "strong DMRS port" can be understood as a DMRS port whose channel influence is less than a second predetermined value. This embodiment does not impose any restrictions on this. The first and second predetermined values ​​can be determined by protocol agreements, network-side device configurations, etc., and are not limited here.

[0062] In some embodiments, for the N DMRS ports corresponding to the target uplink transmission, when the target uplink transmission includes M transport layers, at least two of the N DMRS ports corresponding to the M transport layers have different power parameter values, where M is less than or equal to N, and both M and N are integers greater than 1.

[0063] In the case where M is less than N, it can be understood that: one transport layer can correspond to two or more DMRS ports; or, one transport layer corresponds to one DMRS port, and the remaining (NM) DMRS ports transmit channel information obtained by the network-side equipment.

[0064] When M equals N, it can be understood that one transport layer corresponds to one DMRS port.

[0065] Optionally, the target uplink transmission may include, but is not limited to, PUSCH, PUCCH, etc.

[0066] Optionally, the target uplink transmission described in this embodiment can be scheduled by Downlink Control Information (DCI) or configured by Radio Resource Control (RRC). In the case where the target uplink transmission is scheduled by DCI, the flexibility of the target uplink transmission scheduling can be ensured.

[0067] In the case where the target uplink transmission is configured by RRC, downlink scheduling resources can be saved by configuring once and using it multiple times. Optionally, the RRC configuration can be, but is not limited to, type 1 authorized configuration (ConfiguredGrant) or type 2 CG, etc., and is not limited here.

[0068] In some embodiments, the power parameter values ​​of the aforementioned at least two DMRS ports are different, which may include, but are not limited to, at least one of the following 11)-13).

[0069] 11) EPRE, meaning that the EPRE of each of the at least two DMRS ports is different. In other words, in this embodiment, different EPREs can be introduced for different DMRS ports to compensate for the performance differences in DMRS channel estimation corresponding to different DMRS ports and improve the performance of uplink transmission.

[0070] 12) The ratio of the DMRS of the DMRS port to the EPRE of the target uplink transmission, i.e., among the at least two DMRS ports, the ratio of the DMRS of the DMRS port to the EPRE of the target uplink transmission is different, or the ratio of the EPRE of the DMRS port to the EPER of the target uplink transmission is different. In other words, in this embodiment, different EPRE ratios can be introduced for different DMRS ports from the perspective of the EPRE ratio of the DMRS of each DMRS port to the target uplink transmission, thereby compensating for the performance differences in DMRS channel estimation of different DMRS ports and improving the performance of uplink transmission.

[0071] 13) The scaling factor of the power parameter corresponding to the DMRS port (which can also be understood as the DMRS scaling factor of the DMRS port), that is, the scaling factor of the power parameter corresponding to each of the at least two DMRS ports is different. In other words, in this embodiment, different scaling factors can be introduced for different DMRS ports, thereby compensating for the performance difference of DMRS channel estimation of different DMRS ports and improving the uplink transmission performance.

[0072] Optionally, the scaling factor for the power parameter corresponding to the DMRS port described in 13) above may be determined according to at least one of 21)-25) below.

[0073] 21) The type of DMRS.

[0074] The DMRS type may include, but is not limited to, DMRS configuration type 1, DMRS configuration enhanced type 1, DMRS configuration type 2, DMRS configuration enhanced type 2, etc.

[0075] 22) The number of CDM groups with no data.

[0076] In this context, a CDM group can be understood as a DMRS resource. Therefore, a CDM group without data can be understood as representing the number of DMRS resources (e.g., symbols) in the time unit (e.g., symbol) of the DMRS for a target uplink transmission (e.g., PDCSH). Based on this, considering that the EPER of idle resource elements (REs) can be increased to the resource elements of DMRS, thereby increasing the EPER of DMRSREs to be comparable to the EPER of the target uplink transmission, the scaling factor of the power parameter corresponding to the DMRS port can be determined based on the number of CDM groups without data.

[0077] 23) The power boost of the DMRS relative to the target uplink transmission.

[0078] The power boost amount can be determined by protocol agreement or network-side device indication. For example, the power boost amount can be indicated or agreed upon at the DMRS port level.

[0079] For example, suppose that the ratio of the EREP of the target uplink transmission to the EREP of the DMRS port i provided in the related art is... If the protocol stipulates or the network-side device instructs that the power boost of the DMRS port i relative to the target uplink transmission is X(i), then the ratio of the adjusted EREP of the target uplink transmission to the EREP of the DMRS port i is: - X(i), then the ratio of the adjusted target uplink transmission EREP to the EREP of the DMRS port i can be used ( -X(i)), and based on the formula Determine the scaling factor for the power parameter corresponding to the DMRS port i, i.e. .

[0080] 24) The ratio of the EPER of the target uplink transmission to the EPER of the DMRS.

[0081] The EPER of the DMRS can be understood as the average energy of the entire DMRS signal on the Resource Element (RE), which is a general description of the DMRS signal energy of all DMRS ports (i.e., all antenna ports) corresponding to the uplink transmission of the target.

[0082] Optionally, in this embodiment, assuming the power parameter value is EPER, then the scaling factor of the power parameter corresponding to the DMRS port is... According to the formula It is confirmed that, among them, This represents the ratio of the EPER of the target uplink transmission to the EPER of the DMRS.

[0083] 25) The ratio of the target uplink power parameter value to the power parameter value of the DMRS port.

[0084] In contrast to the power parameter value of DMRS in 24), the power parameter value of the DMRS port described in 25) can be understood as: the average energy of a single DMRS port on the RE, that is, 25) is a description of the DMRS signal energy of a certain antenna port.

[0085] 26) The number of transport layers included in the target uplink transmission.

[0086] 27) The number of DMRS ports corresponding to the target uplink transmission.

[0087] In this embodiment, the scaling factor of the power parameter corresponding to the DMRS port determined by the terminal based on one or more of the aforementioned 21)-27) can be determined by protocol agreement, network-side device indication, etc., and is not limited here.

[0088] In some embodiments, at least one of the at least two DMRS ports has a power parameter value greater than the target uplink transmission power parameter value. For example, the power parameter values ​​of all at least two DMRS ports are greater than, equal to, or less than the target uplink transmission power parameter value; or, the power parameter values ​​of some of the at least two DMRS ports are greater than, equal to, or less than the target uplink transmission power parameter value. In other words, in this embodiment, the transmission power of the DMRS can be decoupled from the transmission power of the data signal in the target uplink transmission, thereby improving the flexibility of power adjustment and ensuring the performance of the target uplink transmission.

[0089] Furthermore, in related technologies where the peak-to-average power ratio (PAPR) of uplink transmissions such as PUSCH is high, power back-off is required to reduce distortion caused by power amplifier (PA) nonlinearity and ensure PUSCH signal quality. Since the transmit power of the DMRS symbol in these technologies is the same as that of the PUSCH, a large PUSCH power back-off will limit the transmit power of the DMRS, affecting channel estimation performance and consequently limiting PUSCH performance. To address this, this embodiment decouples the transmit power of the DMRS from the transmit power of the data signal in the target uplink transmission. This allows for different power back-off amounts for PUSCH and DMRS during power back-off; for example, the PUSCH power back-off amount can be greater than that of the DMRS. This results in the power parameter value (e.g., transmit power) of the backed-off DMRS being greater than the power parameter value (e.g., transmit power) of the target uplink transmission, thereby improving channel estimation performance and ultimately enhancing the demodulation performance of uplink transmissions such as PUSCH.

[0090] In some embodiments, among the at least two DMRS ports, the ratio of the power parameter value of the target uplink transmission corresponding to each DMRS port to the power parameter value of the DMRS satisfies at least one of the following 31)-32).

[0091] 31) The sum of the ratios of the power parameter values ​​of the target uplink transmission corresponding to each of the DMRS ports to the power parameter values ​​of the DMRS is less than a first threshold.

[0092] The first threshold can be determined by means of protocol agreement or network-side device configuration, and is not restricted here.

[0093] 32) The ratio of the power parameter value of the target uplink transmission corresponding to each DMRS port to the power parameter value of the DMRS is less than 0 dB.

[0094] In this embodiment, by configuring the ratio of the power parameter value of the target uplink transmission corresponding to each DMRS port to the power parameter value of the DMRS to satisfy at least one of the aforementioned 31)-32), the total power boost of each DMRS port can be within a certain range, thereby ensuring that the DMRS signal does not undergo distortion after passing through the radio frequency channel, and thus ensuring the transmission performance of the DMRS signal.

[0095] In some embodiments, the power parameter values ​​of the at least two DMRS ports are determined according to at least one of the following 41)-45).

[0096] 41) First indication information, used to schedule the target uplink transmission.

[0097] In other words, while scheduling the target uplink transmission through the first indication information, the first indication information is also used to indicate the power parameter values ​​of the at least two DMRS ports, such as EPER. Optionally, the first indication information can be transmitted via, but is not limited to, DCI.

[0098] Optionally, when the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information, the first indication information may be determined by the network-side device based on uplink channel measurements, that is, the network-side device may indicate the power parameter values ​​corresponding to different DMRS ports to the terminal based on the uplink channel measurements, thereby providing the best power allocation result for the terminal's target uplink transmission and improving uplink transmission performance.

[0099] Optionally, the first indication information may include, but is not limited to, at least one of the first information and the second information.

[0100] The first information is used to indicate relevant information about the power parameter value of the DMRS (such as implicit or explicit indication). In this embodiment, the first indication information can be configured in network signaling such as DCI to indicate the indication field of the power parameter value of the DMRS. That is, in this embodiment, the power parameter of the DMRS port can be indicated by reusing the indication field of the power parameter value (such as EPER) of the DMRS in network signaling such as DCI.

[0101] In some embodiments, the first information is used to indicate relevant information about the power parameter value of the DMRS, and may include, but is not limited to, at least one of the following a)-e).

[0102] a) The first information is used to indicate whether the target uplink transmission is sent using different DMRS power parameter values ​​on different DMRS ports.

[0103] For example, when the first information is bit "0", it can indicate that the target uplink transmission cannot be sent using different DMRS power parameter values ​​on different DMRS ports. When the first information is bit "1", it can indicate that the target uplink transmission can be sent using different DMRS power parameter values ​​on different DMRS ports.

[0104] b) The first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port.

[0105] c) The first information is used to indicate the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port corresponding to different DMRS ports.

[0106] d) The first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a first ratio.

[0107] e) The first information is used to indicate that the ratio of the target uplink transmission power parameter value to the DMRS power parameter value is a second ratio. The second ratio can also be understood as an additional ratio, which is the ratio of the target uplink transmission power parameter value to the DMRS power parameter value additionally indicated by the network-side device relative to the first ratio.

[0108] In this embodiment, when the network-side device indicates the relevant information of the power parameter value of the DMRS to the terminal based on at least one of a)-e), it can not only provide the best power allocation result for the terminal's target uplink transmission to improve uplink transmission performance, but also improve the flexibility of information indication.

[0109] The second information is used to indicate relevant information about the antenna port. That is, the first indication information (such as DCI) may include an indication field for indicating the antenna port, and in this embodiment, the power parameters of the DMRS port can be indicated by reusing the indication field of the antenna port.

[0110] In some embodiments, the second information is used to indicate relevant information about the antenna port, and may include, but is not limited to, at least one of the following a)-b).

[0111] a) The second information is used to indicate the S scheduled DMRS ports and the power parameter value of the DMRS corresponding to each DMRS port. The S DMRS ports are at least a portion of the N DMRS.

[0112] (b) The second information is used to indicate the S DMRS ports scheduled and the proportion of each DMRS port in the total scheduled DMRS power. The S DMRS ports are at least a portion of the N DMRS ports.

[0113] 42) First association information, the first association information is the association information between the Phase Tracking Reference Signal (PTRS) and the DMRS.

[0114] In this embodiment, when the network-side device indicates the relevant information of the antenna port to the terminal based on at least one of a)-e), it can not only provide the best power allocation result for the target uplink transmission of the terminal to improve uplink performance, but also improve the flexibility of information indication.

[0115] In this embodiment, when the power parameter values ​​of the N DMRS ports are determined according to the first association information, assuming that the first DMRS port is a DMRS port associated with the PTRS port indicated by the association indication information between the PTRS and DMRS, and the second DMRS port is a port other than the first DMRS port among the N DMRS ports, then the first DMRS port and the second DMRS port satisfy at least one of the following a)-b).

[0116] a) The absolute value of the power parameter value of the first DMRS port is less than the absolute value of the power parameter value of the second DMRS port.

[0117] b) The power parameter values ​​between the first DMRS port and the second DMRS port meet specific conditions. These specific conditions include at least one of the following conditions 1-2.

[0118] Condition 1: The power parameter values ​​between the first DMRS port and the second DMRS port are equal to the values ​​agreed upon in the protocol.

[0119] Condition 2: The first DMRS port is not enhanced.

[0120] 43) SRS resources or SRS ports associated with the target uplink transmission.

[0121] 44) The antenna port corresponding to the uplink transmission of the target.

[0122] 45) Modulation and Coding Scheme (MCS) indication.

[0123] In this embodiment, by using the method for determining the power parameter values ​​of the at least two DMRS ports provided in 43)-45) above, the terminal can determine the power parameter values ​​of the DMRS ports based on the actual implementation situation (such as SRS resources or SRS ports associated with the target uplink transmission, antenna ports corresponding to the target uplink transmission, and MCS indications). This ensures that the power parameter values ​​of different DMRS ports can be determined without affecting the DMRS transmission performance.

[0124] Based on the description of the aforementioned method embodiment 200, in order to better understand the transmission scheme provided by this application, an exemplary description is given below with reference to examples.

[0125] Example 1 Assuming the target uplink transmission is PUSCH, then, for the case of uplink DMRS and PUSCH, the terminal can assume the ratio of the EPRE of PUSCH to the EPRE of DMRS port i is... The [dB] values ​​are shown in Table 2, which represents the ratio of PUSCH EPRE to DM-RS port iEPRE. Table 2 is determined based on the number of DMRS CDM groups without data and the type of DMRS, and includes scaling factors for the power parameters corresponding to the DMRS ports. According to Calculated.

[0126] Table 2

[0127] Among them, X in Table 2 ( i ) represents the power boost amount, which can be obtained from network-side device indication information (such as the aforementioned first indication information) or protocol agreement. i represents the port index or position of the DMRS port corresponding to the scheduled PUSCH, i=0,1,…,S-1, S is less than or equal to N, and N is the number of DMRS ports corresponding to the PUSCH.

[0128] Optionally, for S DMRS ports, A represents the first threshold.

[0129] In Example 1, a power boost amount X(i) is indicated for each of the N DMRS ports, so that when the terminal transmits PUSCH, it can adjust the ratio of the EPER of the PUSCH to the EREP of the DMRS port according to the power boost amount X(i), thereby compensating for the performance difference of DMRS channel estimation of different DMRS ports and improving the performance of PUSCH transmission.

[0130] Furthermore, in this example 1, by limiting... It can also ensure that the total power boost of each DMRS port is within a certain range, thereby ensuring that the DMRS signal is not distorted after passing through the radio frequency channel, and thus ensuring the transmission performance of the DMRS signal.

[0131] Example 2: Assuming the target uplink transmission is PUSCH, then, for the case of uplink DMRS and PUSCH, the terminal can assume the ratio of PUSCH EPRE to DMRS EPRE is... The [dB] values ​​are shown in Table 3, which illustrates the ratio of PUSCH EPRE to DMRS EPRE. Table 3 is determined based on the number of DMRS CDM groups without data and the type of DMRS.

[0132] Table 3

[0133] Based on this, for each DMRS port corresponding to the PUSCH, it can be assumed that the ratio of PUSCH ERPE to DMRS port i is always... ,in Therefore, for the DMRS port i, the scaling factor of the power parameter corresponding to the DMRS port i can be determined according to the formula... Sure.

[0134] In this example 2, different scaling factors can be introduced for different DMRS ports, which can compensate for the performance differences in DMRS channel estimation for different DMRS ports and improve the performance of PUSCH transmission.

[0135] like Figure 3 The diagram shown is a flowchart of a transmission method 300 provided in an exemplary embodiment of this application. This method 300 can be executed by, but is not limited to, a network-side device, specifically by hardware and / or software installed in the network-side device. In this embodiment, the method 300 may include at least the following steps.

[0136] S310, the network-side device receives the target uplink transmission from the terminal.

[0137] The target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

[0138] In some embodiments, when the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

[0139] In some embodiments, the power parameter value includes at least one of the following: the energy EPRE transmitted on each resource element; the ratio of the EPRE between the DMRS of the DMRS port and the target uplink transmission; and the scaling factor of the power parameter corresponding to the DMRS port.

[0140] In some embodiments, the method further includes: the network-side device sending first indication information to the terminal; wherein the first indication information is used to schedule the target uplink transmission, and the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information.

[0141] In some embodiments, the first indication information includes at least one of the following: first information, which indicates information related to the power parameter value of the DMRS; and second information, which indicates information related to the antenna port.

[0142] In some embodiments, the first information used to indicate information related to the power parameter value of the DMRS includes at least one of the following: the first information is used to indicate whether the target uplink transmission is transmitted using different DMRS power parameter values ​​on different DMRS ports; the first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port; the first information is used to indicate the proportion of the allocation of the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port corresponding to different DMRS ports; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a first ratio; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a second ratio, wherein the second ratio is a ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS additionally indicated relative to the first ratio.

[0143] In some embodiments, the second information is used to indicate relevant information of the antenna port, including at least one of the following: the second information is used to indicate the S scheduled DMRS ports and the power parameter value of the DMRS corresponding to each DMRS port; the second information is used to indicate the S scheduled DMRS ports and the proportion of each DMRS port in the total scheduled DMRS power, wherein the S DMRS ports are at least a portion of the N DMRS.

[0144] It is understood that each implementation in this method embodiment 300 has the same or corresponding technical features as the aforementioned method embodiment 200. Therefore, the implementation of each implementation in this method embodiment 300 can be referred to the relevant description in the aforementioned method embodiment 200 to achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0145] The transmission method provided in this application can be executed by a transmission device. This application uses an example of a transmission device executing the transmission method to illustrate the transmission device provided in this application.

[0146] This application provides a transmission device. As an example, the transmission device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0147] The transmission device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as central processing units (CPUs), microprocessors, digital signal processors (DSPs), artificial intelligence (AI) processors, graphics processing units (GPUs), application-specific integrated circuits (ASICs), network processors (NPs), field-programmable gate arrays (FPGAs), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceivers, pins, circuits, buses, radio frequency units, etc.

[0148] For details, see Figure 4When the transmission device is a terminal or a component in a terminal, the transmission device 400 includes a transmission module 410 for transmitting a target uplink transmission; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0149] In some embodiments, when the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

[0150] In some embodiments, the power parameter value includes at least one of the following: the energy EPRE transmitted on each resource element; the ratio of the EPRE between the DMRS of the DMRS port and the target uplink transmission; and the scaling factor of the power parameter corresponding to the DMRS port.

[0151] In some embodiments, the scaling factor of the power parameter corresponding to the DMRS port is determined based on at least one of the following: the type of DMRS; the number of Code Division Multiplexing (CDM) groups without data; the power boost of the DMRS relative to the target uplink transmission; the ratio of the EPRE of the target uplink transmission to the EPRE of the DMRS; the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port; the number of transport layers included in the target uplink transmission; and the number of DMRS ports corresponding to the target uplink transmission.

[0152] In some embodiments, there is a DMRS in the at least two DMRS ports whose power parameter value is greater than the power parameter value of the target uplink transmission.

[0153] In some embodiments, among the at least two DMRS ports, the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS corresponding to each DMRS port satisfies at least one of the following: the sum of the ratios of the power parameter value of the target uplink transmission to the power parameter value of the DMRS corresponding to each DMRS port is less than a first threshold; the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS corresponding to each DMRS port is less than 0 dB.

[0154] In some embodiments, the power parameter values ​​of the at least two DMRS ports are determined based on at least one of the following: first indication information for scheduling the target uplink transmission; first association information, wherein the first association information is the association information between the phase tracking reference signal PTRS and the DMRS; a sounding reference signal SRS resource or SRS port associated with the target uplink transmission; an antenna port corresponding to the target uplink transmission; and a modulation and coding scheme (MCS) indication.

[0155] In some embodiments, when the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information, the first indication information includes at least one of the following: first information, which indicates relevant information about the power parameter values ​​of the DMRS; and second information, which indicates relevant information about the antenna ports.

[0156] In some embodiments, the first information is used to indicate information related to the power parameter value of the DMRS, including at least one of the following: the first information is used to indicate whether the target uplink transmission is transmitted using different DMRS power parameter values ​​on different DMRS ports; the first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port; the first information is used to indicate the proportion of the allocation of the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port corresponding to different DMRS ports; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a first ratio; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a second ratio, wherein the second ratio is a ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS additionally indicated relative to the first ratio.

[0157] In some embodiments, the second information is used to indicate relevant information of the antenna port, including at least one of the following: the second information is used to indicate the S scheduled DMRS ports and the power parameter value of the DMRS corresponding to each DMRS port; the second information is used to indicate the S scheduled DMRS ports and the proportion of each DMRS port in the total scheduled DMRS power, wherein the S DMRS ports are at least a portion of the N DMRS.

[0158] In some embodiments, when the power parameter values ​​of the at least two DMRS ports are determined according to the first association information, the first DMRS port and the second DMRS port satisfy at least one of the following: the absolute value of the power parameter value of the first DMRS port is less than the absolute value of the power parameter value of the second DMRS port; the power parameter values ​​between the first DMRS port and the second DMRS port satisfy a specific condition; wherein, the first DMRS port is the DMRS port associated with the PTRS port indicated by the association indication information between the PTRS and DMRS, and the second DMRS port is a port other than the first DMRS port among the N DMRS ports.

[0159] In some embodiments, the specific conditions include at least one of the following: the power parameter values ​​between the first DMRS port and the second DMRS port are respectively equal to the protocol-defined values; the first DMRS port is not enhanced.

[0160] In some embodiments, the target uplink transmission is scheduled by downlink control information (DCI) or configured by radio resource control (RRC).

[0161] In some embodiments, the target uplink transmission includes at least one of the Physical Uplink Shared Channel (PUSCH) and the Physical Uplink Control Channel (PUCCH).

[0162] The transmission device 400 provided in this application embodiment can achieve Figure 2 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0163] See Figure 5 When the transmission device is a network-side device or a component of a network-side device, the transmission device 500 includes a receiving module 510 for receiving a target uplink transmission from a terminal; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0164] In some embodiments, when the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

[0165] In some embodiments, the power parameter value includes at least one of the following: the energy EPRE transmitted on each resource element; the ratio of the EPRE between the DMRS of the DMRS port and the target uplink transmission; and the scaling factor of the power parameter corresponding to the DMRS port.

[0166] In some embodiments, such as Figure 5 As shown, the device 500 further includes: a sending module 520, used to send first indication information to the terminal; wherein the first indication information is used to schedule the target uplink transmission, and the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information.

[0167] In some embodiments, the first indication information includes at least one of the following: first information, which indicates information related to the power parameter value of the DMRS; and second information, which indicates information related to the antenna port.

[0168] In some embodiments, the first information is used to indicate information related to the power parameter value of the DMRS, including at least one of the following: the first information is used to indicate whether the target uplink transmission is transmitted using different DMRS power parameter values ​​on different DMRS ports; the first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port; the first information is used to indicate the proportion of the allocation of the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port corresponding to different DMRS ports; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a first ratio; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a second ratio, wherein the second ratio is a ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS additionally indicated relative to the first ratio.

[0169] In some embodiments, the second information is used to indicate antenna ports, including at least one of the following: the second information is used to indicate S scheduled DMRS ports and the power parameter value of the DMRS corresponding to each DMRS port; the second information is used to indicate the S scheduled DMRS ports and the proportion of each DMRS port in the total scheduled DMRS power, wherein the S DMRS ports are at least a portion of the N DMRS.

[0170] The transmission device 500 provided in this application embodiment can achieve... Figure 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0171] like Figure 6As shown, this application embodiment also provides a communication device 600, including a processor 601 and a memory 602. The memory 602 stores a program or instructions that can run on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various steps of the above-described transmission method embodiment 200 and achieve the same technical effect. When the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various steps of the above-described transmission method embodiment 300 and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0172] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 2 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 4 The transmission device 400 shown. Specifically, Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application. The terminal 700 includes, but is not limited to, M components such as: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0173] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply can be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0174] It should be understood that, in this embodiment, the input unit 704 may include a graphics processor 7041 and a microphone 7042. The graphics processor 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0175] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0176] The memory 709 can be used to store software programs or instructions, as well as various data. The memory 709 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 709 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0177] Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0178] The radio frequency unit 701 is used to transmit the target uplink transmission; wherein the target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

[0179] In some embodiments, when the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

[0180] In some embodiments, the power parameter value includes at least one of the following: the energy EPRE transmitted on each resource element; the ratio of the EPRE between the DMRS of the DMRS port and the target uplink transmission; and the scaling factor of the power parameter corresponding to the DMRS port.

[0181] In some embodiments, the scaling factor of the power parameter corresponding to the DMRS port is determined based on at least one of the following: the type of DMRS; the number of Code Division Multiplexing (CDM) groups without data; the power boost of the DMRS relative to the target uplink transmission; the ratio of the EPRE of the target uplink transmission to the EPRE of the DMRS; the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port; the number of transport layers included in the target uplink transmission; and the number of DMRS ports corresponding to the target uplink transmission.

[0182] In some embodiments, there is a DMRS in the at least two DMRS ports whose power parameter value is greater than the power parameter value of the target uplink transmission.

[0183] In some embodiments, among the at least two DMRS ports, the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS corresponding to each DMRS port satisfies at least one of the following: the sum of the ratios of the power parameter value of the target uplink transmission to the power parameter value of the DMRS corresponding to each DMRS port is less than a first threshold; the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS corresponding to each DMRS port is less than 0 dB.

[0184] In some embodiments, the power parameter values ​​of the at least two DMRS ports are determined based on at least one of the following: first indication information for scheduling the target uplink transmission; first association information, wherein the first association information is the association information between the phase tracking reference signal PTRS and the DMRS; a sounding reference signal SRS resource or SRS port associated with the target uplink transmission; an antenna port corresponding to the target uplink transmission; and a modulation and coding scheme (MCS) indication.

[0185] In some embodiments, when the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information, the first indication information includes at least one of the following: first information, which indicates relevant information about the power parameter values ​​of the DMRS; and second information, which indicates relevant information about the antenna ports.

[0186] In some embodiments, the first information is used to indicate information related to the power parameter value of the DMRS, including at least one of the following: the first information is used to indicate whether the target uplink transmission is transmitted using different DMRS power parameter values ​​on different DMRS ports; the first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port; the first information is used to indicate the proportion of the allocation of the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port corresponding to different DMRS ports; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a first ratio; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a second ratio, wherein the second ratio is a ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS additionally indicated relative to the first ratio.

[0187] In some embodiments, the second information is used to indicate relevant information of the antenna port, including at least one of the following: the second information is used to indicate the S scheduled DMRS ports and the power parameter value of the DMRS corresponding to each DMRS port; the second information is used to indicate the S scheduled DMRS ports and the proportion of each DMRS port in the total scheduled DMRS power, wherein the S DMRS ports are at least a portion of the N DMRS.

[0188] In some embodiments, when the power parameter values ​​of the at least two DMRS ports are determined according to the first association information, the first DMRS port and the second DMRS port satisfy at least one of the following: the absolute value of the power parameter value of the first DMRS port is less than the absolute value of the power parameter value of the second DMRS port; the power parameter values ​​between the first DMRS port and the second DMRS port satisfy a specific condition; wherein, the first DMRS port is the DMRS port associated with the PTRS port indicated by the association indication information between the PTRS and DMRS, and the second DMRS port is a port other than the first DMRS port among the N DMRS ports.

[0189] In some embodiments, the specific conditions include at least one of the following: the power parameter values ​​between the first DMRS port and the second DMRS port are respectively equal to the protocol-defined values; the first DMRS port is not enhanced.

[0190] In some embodiments, the target uplink transmission is scheduled by downlink control information (DCI) or configured by radio resource control (RRC).

[0191] In some embodiments, the target uplink transmission includes at least one of the Physical Uplink Shared Channel (PUSCH) and the Physical Uplink Control Channel (PUCCH).

[0192] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiment 200 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0193] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 3 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0194] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 5 The transmission device shown. (e.g.) Figure 8 As shown, the network-side device 800 includes: an antenna 801, a radio frequency (RF) device 802, a baseband device 803, a processor 804, and a memory 805. The antenna 801 is connected to the RF device 802. In the uplink direction, the RF device 802 receives information through the antenna 801 and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be transmitted and sends it to the RF device 802. The RF device 802 processes the received information and transmits it through the antenna 801.

[0195] The method executed by the network-side device 800 in the above embodiments can be implemented in the baseband device 803, which includes a baseband processor.

[0196] The baseband device 803 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 805 via a bus interface to call the program or instructions in the memory 805 to execute the network-side device operations shown in the above method embodiments.

[0197] The network-side device 800 may also include a network interface 806, such as a Common Public Radio Interface (CPRI).

[0198] The radio frequency device 802 is used to receive target uplink transmissions from the terminal; wherein the target uplink transmissions correspond to N demodulation reference signal (DMRS) ports, at least two of the N DMRS ports have different power parameter values, and N is an integer greater than 1.

[0199] In some embodiments, when the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

[0200] In some embodiments, the power parameter value includes at least one of the following: the energy EPRE transmitted on each resource element; the ratio of the EPRE between the DMRS of the DMRS port and the target uplink transmission; and the scaling factor of the power parameter corresponding to the DMRS port.

[0201] In some embodiments, the radio frequency device 802 is further configured to send first indication information to the terminal; wherein the first indication information is used to schedule the target uplink transmission, and the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information.

[0202] In some embodiments, the first indication information includes at least one of the following: first information, which indicates information related to the power parameter value of the DMRS; and second information, which indicates information related to the antenna port.

[0203] In some embodiments, the first information is used to indicate information related to the power parameter value of the DMRS, including at least one of the following: the first information is used to indicate whether the target uplink transmission is transmitted using different DMRS power parameter values ​​on different DMRS ports; the first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port; the first information is used to indicate the proportion of the allocation of the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS port corresponding to different DMRS ports; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a first ratio; the first information is used to indicate that the ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS is a second ratio, wherein the second ratio is a ratio of the power parameter value of the target uplink transmission to the power parameter value of the DMRS additionally indicated relative to the first ratio.

[0204] In some embodiments, the second information is used to indicate relevant information of the antenna port, including at least one of the following: the second information is used to indicate the S scheduled DMRS ports and the power parameter value of the DMRS corresponding to each DMRS port; the second information is used to indicate the S scheduled DMRS ports and the proportion of each DMRS port in the total scheduled DMRS power, wherein the S DMRS ports are at least a portion of the N DMRS.

[0205] Furthermore, the network-side device 800 in this embodiment of the application also includes: a program or instructions stored in a memory 805 and executable on a processor 804, wherein the processor 804 calls the program or instructions in the memory 805 to execute. Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0206] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described transmission method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0207] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0208] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0209] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0210] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0211] This application also provides a wireless communication system, including a terminal and a network-side device. The terminal can be used to implement the various processes of the above-described transmission method embodiment 200, and the network-side device can be used to implement the various processes of the above-described transmission method embodiment 300, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0212] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0213] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0214] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A transmission method, characterized in that, include: The terminal sends the target uplink transmission; The target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

2. The method as described in claim 1, characterized in that, In the case where the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

3. The method as described in claim 1 or 2, characterized in that, The power parameter value includes at least one of the following: Energy EPR transferred on each resource element; The ratio of DMRS of the DMRS port to the EPRE of the target uplink transmission; The scaling factor for the power parameters corresponding to the DMRS port.

4. The method as described in claim 3, characterized in that, The scaling factor for the power parameter corresponding to the DMRS port is determined according to at least one of the following: The type of DMRS; The number of Code Division Multiplexing (CDM) groups without data; The power boost of the DMRS relative to the target uplink transmission; The ratio of the target uplink transmission EPRE to the DMRS EPRE; The ratio of the target uplink power parameter value to the power parameter value of the DMRS port; The target uplink transmission includes the number of transport layers; The number of DMRS ports corresponding to the target uplink transmission.

5. The method according to any one of claims 1-4, characterized in that, At least two DMRS ports contain DMRS with power parameter values ​​greater than the target uplink transmission power parameter value.

6. The method according to any one of claims 1-5, characterized in that, In the at least two DMRS ports, the ratio of the target uplink transmission power parameter value to the DMRS power parameter value corresponding to each DMRS port satisfies at least one of the following: The sum of the ratios of the power parameter values ​​of the target uplink transmission corresponding to each of the DMRS ports to the power parameter values ​​of the DMRS is less than a first threshold. The ratio of the power parameter value of the target uplink transmission corresponding to each DMRS port to the power parameter value of the DMRS is less than 0 dB.

7. The method according to any one of claims 1-6, characterized in that, The power parameter values ​​of the at least two DMRS ports are determined according to at least one of the following: The first instruction information is used to schedule the target uplink transmission; The first association information is the association information between the phase tracking reference signal PTRS and DMRS; The sounding reference signal (SRS) resource or SRS port associated with the uplink transmission of the target; The target uplink transmission corresponding antenna port; Modulation and coding scheme (MCS) indication.

8. The method as described in claim 7, characterized in that, When the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information, the first indication information includes at least one of the following: The first information is related to the power parameter values ​​of the DMRS; The second piece of information is used to indicate relevant information about the antenna port.

9. The method as described in claim 8, characterized in that, The first information is used to indicate relevant information about the power parameter value of the DMRS, including at least one of the following: The first information is used to indicate whether the target uplink transmission is sent using different DMRS power parameter values ​​on different DMRS ports; The first information is used to indicate the ratio of the target uplink power parameter value corresponding to different DMRS ports to the power parameter value of the DMRS port; The first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port. The first information is used to indicate that the ratio of the target uplink transmission power parameter value to the DMRS power parameter value is a first ratio value; The first information is used to indicate that the ratio of the target uplink power parameter value to the DMRS power parameter value is a second ratio, which is an additional ratio of the target uplink power parameter value to the DMRS power parameter value relative to the first ratio.

10. The method as described in claim 8, characterized in that, The second information is used to indicate relevant information about the antenna port, including at least one of the following: The second information is used to indicate the S DMRS ports to be scheduled and the power parameter value of the DMRS corresponding to each DMRS port; The second information is used to indicate the S DMRS ports scheduled and the proportion of each DMRS port in the total scheduled DMRS power; Wherein, the S DMRS ports are at least a portion of the N DMRS.

11. The method as described in claim 7, characterized in that, When the power parameter values ​​of the at least two DMRS ports are determined based on the first association information, the first DMRS port and the second DMRS port satisfy at least one of the following: The absolute value of the power parameter of the first DMRS port is less than the absolute value of the power parameter of the second DMRS port; The power parameter values ​​between the first DMRS port and the second DMRS port meet specific conditions; Wherein, the first DMRS port is the DMRS port associated with the PTRS port indicated by the association indication information between the PTRS and DMRS, and the second DMRS port is the port other than the first DMRS port among the N DMRS ports.

12. The method as described in claim 11, characterized in that, The specific conditions include at least one of the following: The power parameter values ​​between the first DMRS port and the second DMRS port are respectively equal to the values ​​agreed upon in the protocol; The first DMRS port is not enhanced.

13. The method according to any one of claims 1-12, characterized in that, The target uplink transmission is scheduled by downlink control information (DCI) or configured by radio resource control (RRC).

14. The method according to any one of claims 1-12, characterized in that, The target uplink transmission includes at least one of the Physical Uplink Shared Channel (PUSCH) and the Physical Uplink Control Channel (PUCCH).

15. A transmission method, characterized in that, include: Network-side devices receive target uplink transmissions from terminals; The target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

16. The method as described in claim 15, characterized in that, In the case where the target uplink transmission includes M transport layers, the N DMRS ports correspond to the M transport layers, wherein M is less than or equal to N, and M is an integer greater than 1.

17. The method as described in claim 15 or 16, characterized in that, The power parameter value includes at least one of the following: Energy EPR transferred on each resource element; The ratio of EPRE between the DMRS port's DMRS and the target uplink transmission; The scaling factor for the power parameters corresponding to the DMRS port.

18. The method according to any one of claims 15-17, characterized in that, The method further includes: The network-side device sends a first instruction message to the terminal; The first indication information is used to schedule the target uplink transmission, and the power parameter values ​​of the at least two DMRS ports are determined according to the first indication information.

19. The method as described in claim 18, characterized in that, The first indication information includes at least one of the following: The first information is related to the power parameter values ​​of the DMRS; The second piece of information is used to indicate relevant information about the antenna port.

20. The method as described in claim 19, characterized in that, The first information is used to indicate relevant information about the power parameter value of the DMRS, including at least one of the following: The first information is used to indicate whether the target uplink transmission is sent using different DMRS power parameter values ​​on different DMRS ports; The first information is used to indicate the ratio of the target uplink power parameter value corresponding to different DMRS ports to the power parameter value of the DMRS port; The first information is used to indicate the ratio of the power parameter value of the target uplink transmission corresponding to different DMRS ports to the power parameter value of the DMRS port. The first information is used to indicate that the ratio of the target uplink transmission power parameter value to the DMRS power parameter value is a first ratio value; The first information is used to indicate that the ratio of the target uplink power parameter value to the DMRS power parameter value is a second ratio, which is an additional ratio of the target uplink power parameter value to the DMRS power parameter value relative to the first ratio.

21. The method as described in claim 19, characterized in that, The second information is used to indicate relevant information about the antenna port, including at least one of the following: The second information is used to indicate the S DMRS ports to be scheduled and the power parameter value of the DMRS corresponding to each DMRS port; The second information is used to indicate the S DMRS ports scheduled and the proportion of each DMRS port in the total scheduled DMRS power; Wherein, the S DMRS ports are at least a portion of the N DMRS.

22. A transmission device, characterized in that, include: The sending module is used to send the target uplink transmission; The target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

23. The apparatus as claimed in claim 22, characterized in that, The power parameter value includes at least one of the following: Energy EPR transferred on each resource element; The ratio of EPRE between the DMRS port's DMRS and the target uplink transmission; The scaling factor for the power parameters corresponding to the DMRS port.

24. A transmission device, characterized in that, include: Network-side devices receive target uplink transmissions from terminals; The target uplink transmission corresponds to N demodulation reference signal (DMRS) ports, and at least two of the N DMRS ports have different power parameter values, where N is an integer greater than 1.

25. The apparatus as claimed in claim 24, characterized in that, The power parameter value includes at least one of the following: Energy EPR transferred on each resource element; The ratio of EPRE between the DMRS port's DMRS and the target uplink transmission; The scaling factor for the power parameters corresponding to the DMRS port.

26. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 1 to 14.

27. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method as described in any one of claims 15 to 21.

28. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 14, or the steps of the method as claimed in any one of claims 15 to 21.

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