Communication method, terminal and network side device

Abstract

This application discloses a communication method, a terminal, and a network-side device, belonging to the field of communication. The communication method includes: the terminal receiving first information from the network-side device, the first information being used to indicate uplink transmission parameters; wherein the precoding matrix corresponding to the uplink transmission parameters may belong to an extended set of precoding matrices.

Description

Technical Field

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

[0002] In wireless communication systems, there are two modes of Physical Uplink Shared Channel (PUSCH) transmission between network-side devices and terminals: codebook-based transmission and non-codebook-based transmission. Both modes rely on the Sounding Reference Signal (SRS) resources configured by the network-side devices to determine uplink transmission parameters such as precoding information and transmission layer number.

[0003] However, in related technologies, the transmission performance of PUSCH is not ideal due to limited predefined precoding information or unreasonable SRS resources configured on the network side. Summary of the Invention

[0004] This application provides a communication method, terminal, and network-side device that can solve the problem of unsatisfactory PUSCH transmission performance in current PUSCH transmission schemes.

[0005] Firstly, a communication method is provided, the method comprising: The terminal receives first information from the network-side device, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following:

[0006]

[0007] The second set of precoding matrices includes at least one of the following:

[0008]

[0009]

[0010]

[0011] The third set of precoding matrices includes at least one of the following:

[0012]

[0013] Where j is the imaginary unit, satisfying .

[0014] Secondly, a communication method is provided, the method comprising: The terminal receives second information from the network-side device. The second information is used to configure a first SRS resource set, which corresponds to a PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

[0015] Thirdly, a communication method is provided, the method comprising: The network-side device sends first information to the terminal, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following:

[0016]

[0017] The second set of precoding matrices includes at least one of the following:

[0018]

[0019]

[0020]

[0021] The third set of precoding matrices includes at least one of the following:

[0022]

[0023] Where j is the imaginary unit, satisfying .

[0024] Fourthly, a communication method is provided, which includes: The network-side device sends second information to the terminal. The second information is used to configure the first SRS resource set, which corresponds to PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, wherein the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

[0025] Fifthly, a communication device is provided, the device comprising: a first receiving module, configured to receive first information from a network-side device, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following:

[0026]

[0027] The second set of precoding matrices includes at least one of the following:

[0028]

[0029]

[0030]

[0031] The third set of precoding matrices includes at least one of the following:

[0032]

[0033] Where j is the imaginary unit, satisfying .

[0034] In a sixth aspect, a communication device is provided, the device comprising: a second receiving module, configured to receive second information from a network-side device, the second information being configured to configure a first SRS resource set, the first SRS resource set corresponding to a PUSCH based on non-codebook transmission; The first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

[0035] In a seventh aspect, a communication device is provided, the device comprising: The first sending module is used to send first information to the terminal, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following:

[0036]

[0037] The second set of precoding matrices includes at least one of the following:

[0038]

[0039]

[0040]

[0041] The third set of precoding matrices includes at least one of the following:

[0042]

[0043] Where j is the imaginary unit, satisfying .

[0044] Eighthly, a communication device is provided, the device comprising: The second sending module is used to send second information to the terminal. The second information is used to configure the first SRS resource set, and the first SRS resource set corresponds to PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, wherein the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

[0045] A ninth aspect provides a communication device configured to perform the steps of the method as described in any one of the first, second, third, and fourth aspects.

[0046] In a tenth 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 or second aspect.

[0047] Eleventhly, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to receive first information from a network-side device, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following:

[0048]

[0049] The second set of precoding matrices includes at least one of the following:

[0050]

[0051]

[0052]

[0053] The third set of precoding matrices includes at least one of the following:

[0054]

[0055] Where j is the imaginary unit, satisfying .

[0056] In a twelfth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to receive second information from a network-side device, the second information being used to configure a first SRS resource set, the first SRS resource set corresponding to PUSCH based on non-codebook transmission; The first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

[0057] In a thirteenth aspect, 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 third or fourth aspect.

[0058] In a fourteenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send first information to a terminal, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following:

[0059]

[0060] The second set of precoding matrices includes at least one of the following:

[0061]

[0062]

[0063]

[0064] The third set of precoding matrices includes at least one of the following:

[0065]

[0066] Where j is the imaginary unit, satisfying .

[0067] In a fifteenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send second information to a terminal, the second information being used to configure a first SRS resource set, the first SRS resource set corresponding to PUSCH based on non-codebook transmission; The first SRS resource set includes N SRS resources, wherein the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

[0068] In a sixteenth 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 as described in any one of the first, second, third, and fourth aspects.

[0069] In a seventeenth aspect, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the method described in the first aspect, and the network-side device is configured to perform the steps of the method described in the third aspect.

[0070] Eighteenth aspect: A wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the method described in the second aspect, and the network-side device is configured to perform the steps of the method described in the fourth aspect.

[0071] In a nineteenth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run programs or instructions to implement the methods described in any one of the first, second, third, and fourth aspects.

[0072] In a twentieth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to implement the steps of the method as described in any one of the first, second, third, and fourth aspects.

[0073] In the embodiments of this application, since more precoding matrices are introduced, that is, the precoding matrix set is expanded, the selection range of precoding matrices for PUSCH transmission of related waveforms is wider, thereby improving uplink transmission performance; or a dedicated SRS resource set for PUSCH based on non-codebook transmission is configured, and the correspondence between the SRS port and the antenna port corresponding to the SRS resource set is defined, ensuring that multiple SRS resources correspond to different antenna ports during multi-layer transmission, thereby ensuring the low peak-to-average power ratio (PAPR) characteristic and improving uplink transmission performance. Attached Figure Description

[0074] Figure 1 This is a block diagram of a wireless communication system applicable to embodiments of this application.

[0075] Figure 2 This is a flowchart illustrating a communication method proposed in one embodiment of this application.

[0076] Figure 3 This is a flowchart illustrating a communication method proposed in another embodiment of this application.

[0077] Figure 4 This is a flowchart illustrating a communication method proposed in another embodiment of this application.

[0078] Figure 5 This is a flowchart illustrating a communication method proposed in another embodiment of this application.

[0079] Figure 6 This is a schematic diagram of the structure of a communication device according to an embodiment of this application.

[0080] Figure 7 This is a schematic diagram of the structure of a communication device according to another embodiment of this application.

[0081] Figure 8 This is a schematic diagram of the structure of a communication device according to another embodiment of this application.

[0082] Figure 9 This is a schematic diagram of the structure of a communication device according to another embodiment of this application.

[0083] Figure 10 This is a schematic diagram of the structure of a communication device proposed in an embodiment of this application.

[0084] Figure 11 This is a schematic diagram of the structure of a terminal proposed in an embodiment of this application.

[0085] Figure 12 This is a schematic diagram of the structure of a network-side device proposed in an embodiment of this application. Detailed Implementation

[0086] 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.

[0087] 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.

[0088] 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 one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc.; an indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0089] 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.

[0090] 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 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 headphones, 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. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein 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 (AS), or Wireless Fidelity (WiFi) nodes, etc.In this context, a base station may be referred to as a Node B (NB), an Evolved Node B (eNB), a Next Generation Node B (gNB), a New Radio Node B (NR Node B), an Access Point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a Radio Base Station, a Radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B, a Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The base station is not limited to any specific technical terminology. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for introduction, and the specific type of base station is not limited.

[0091] 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 Functions (BSF), Application Functions (AF), Location Management Functions (LMF), Gateway Mobile Location Centres (GMLC), and Network Data Analytics Functions (NWDAF), etc. It should be noted that this application embodiment only uses core network equipment in the NR system as an example for description, and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will also be within the scope of protection of this application.

[0092] 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).

[0093] In related technologies, Physical Uplink Shared Channel (PUSCH) transmission based on Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms does not support multi-layer transmission. Furthermore, the limited number of precodes in these technologies leads to poor uplink transmission performance, particularly for PUSCH transmission using DFT-s-OFDM waveforms, where the available precodes are relatively limited, thus restricting PUSCH transmission performance.

[0094] To address the issue of unsatisfactory PUSCH transmission performance in current PUSCH transmission schemes, this application proposes a communication method. The following detailed description, in conjunction with the accompanying drawings, provides an example of the communication method provided by this application and its application scenarios.

[0095] like Figure 2 As shown, one embodiment of this application proposes a communication method, which may include: Step 201: The terminal receives first information from the network-side device, which is used to indicate uplink transmission parameters.

[0096] In some embodiments, the first information may be carried by downlink control information (DCI). Optionally, when the first information is carried by DCI, the DCI is used to schedule PUSCH, and the uplink transmission parameters may include precoding and transmission layer number.

[0097] In some embodiments, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transmission layer of 3.

[0098] The first set of precoding matrices may include at least one of the following:

[0099]

[0100] The second set of precoding matrices may include at least one of the following:

[0101]

[0102]

[0103]

[0104] The third set of precoding matrices may include at least one of the following:

[0105]

[0106] Where j is the imaginary unit, satisfying .

[0107] In some embodiments, Figure 2 The method shown may also include: The precoding matrix corresponding to the uplink transmission parameters indicated by the first information is determined to belong to the first precoding matrix set, the second precoding matrix set, or the third precoding matrix set if at least one of the following conditions is met (or, the determination that the precoding matrix corresponding to the uplink transmission parameters indicated by the first information belongs to the first precoding matrix set, the second precoding matrix set, or the third precoding matrix set is applicable if at least one of the following conditions is met): 1) The coherent transmission capability reported by the terminal is full-partial-noncoherent. 2) The precoding subset configured on the network-side device is restricted to full-partial-non-coherent; 3) The maximum number of transport layers for PUSCH based on codebook transmission configured on the network-side device is greater than 1; 4) The network-side device is configured to dynamically enable Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms based on codebook transmission of PUSCH; 5) The network-side device is configured to enable DFT-s-OFDM waveform; 6) The network-side device enables the DFT-S-OFDM waveform of PUSCH based on codebook transmission via DCI instruction; 7) The network-side device is configured to support an extended set of precoding matrices.

[0108] The DCI used for scheduling PUSCH includes precoding information and a transmission layer number (TPMI) field. The TPMI field indicates a precoding matrix selected from a predefined codebook set for the scheduled PUSCH transmission. The terminal determines the precoding matrix based on the TPMI field. Optionally, the codebook set includes rank 4 codewords and other codewords.

[0109] The following examples illustrate how precoding information and transport layer number are indicated.

[0110] Example 1 In one example, for a PUSCH that uses a DFT-S-OFDM waveform and has transform precoding enabled, the indication information regarding precoding information and the number of transmission layers can be shown in Table 1 below.

[0111] Table 1 shows the precoding information and transport layer number indication information when maxRank=2 and the TPMI indicator field is 6 bits.

[0112] In Table 1: the mapping relationship between the TPMI index and the precoding matrix is ​​shown in Table 2 when the number of transport layers is 1 (1 layer); the mapping relationship between the TPMI index and the precoding matrix is ​​shown in Table 3 when the number of transport layers is 2 (2 layers).

[0113] Table 2. Precoding matrix W for single-layer transmission using four antenna ports and with precoding enabled. for single-layer transmission using four antenna ports with transformprecoding enabled)

[0114] Table 3. Precoding matrix W for two-layer transmission using four antenna ports and with precoding enabled. for two-layer transmission using four antenna ports with transformprecoding enabled)

[0115] In another example, for a PUSCH that uses a DFT-S-OFDM waveform and has transform precoding enabled, the information regarding precoding and the number of transmission layers can be shown in Table 4 below.

[0116] Table 4 shows the precoding information and transport layer number indication information when maxRank=2 and the TPMI indicator field is 6 bits.

[0117] In Table 4: When the number of transport layers is 1 (1 layer), the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 5 or Table 6 below; when the number of transport layers is 2 (2 layers), the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 3 above.

[0118] Table 5. Precoding matrix W for single-layer transmission using four antenna ports and with precoding enabled. for single-layer transmission using four antenna ports with transformprecoding enabled)

[0119] Table 6. Precoding matrix W for single-layer transmission using four antenna ports and with precoding enabled. for single-layer transmission using four antenna ports with transformprecoding enabled)

[0120] It should be noted that the correspondence between the PMI index and the precoding matrix can also change in the examples shown in Tables 2, 3, 5 and 6.

[0121] Example 2 In one example, for a PUSCH that uses a DFT-S-OFDM waveform and has transform precoding enabled, the information regarding precoding and the number of transmission layers can be shown in Table 7 or Table 8 below.

[0122] Table 7 shows the precoding information and transport layer number indication information when maxRank = 2, 3, or 4 and the TPMI indicator field is 6 bits.

[0123] Table 8 shows the precoding information and transport layer number indication information when maxRank = 2, 3, or 4 and the TPMI indication field is 6 bits.

[0124] In Table 7 or Table 8: When the number of transmission layers is 1 (1 layer), the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 2 above; when the number of transmission layers is 2 (2 layers), the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 3 above; when the number of transmission layers is 3 (3 layers), the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 9 below; when the number of transmission layers is 4 (4 layers), the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 10 below.

[0125] Table 9. Precoding matrix W for three-layer transmission using four antenna ports and with precoding enabled. for three-layer transmission using four antenna ports with transformprecoding enabled)

[0126] Table 10. Precoding matrix W for four-layer transmission with precoding enabled (precoding transmission disabled) using four antenna ports. for four-layer transmission using four antennaports with transform precoding disabled)

[0127] In another example, for a PUSCH that uses a DFT-S-OFDM waveform and has transformprecoding enabled, the indication information regarding precoding information and the number of transmission layers can be shown in Table 11 below.

[0128] Table 11 shows the precoding information and transport layer number indication information when maxRank = 2, 3, or 4 and the TPMI indicator field is 6 bits.

[0129] In Table 11, the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 12 or Table 13 below when the number of transmission layers is 1 (1 layer); the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 3 above when the number of transmission layers is 2 (2 layers); the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 14 below when the number of transmission layers is 3 (3 layers); and the mapping relationship between the TPMI index and the precoding matrix can be shown in Table 10 above when the number of transmission layers is 4 (4 layers).

[0130] Table 12 Precoding matrix W for single-layer transmission using four antenna ports and with precoding enabled. for single-layer transmission using four antenna portswith transform precoding enabled)

[0131] Table 13 Precoding matrix W for single-layer transmission using four antenna ports and with precoding enabled. for single-layer transmission using four antenna portswith transform precoding enabled)

[0132] Table 14 Precoding matrix W for three-layer transmission using four antenna ports and with precoding enabled. for three-layer transmission using four antenna ports withtransform precoding enabled)

[0133] In another example, for a PUSCH that uses a DFT-S-OFDM waveform and has transform precoding enabled, the information regarding precoding and the number of transmission layers can be shown in Table 15 below.

[0134] Table 15 shows the precoding information and transport layer number indication information when maxRank = 2, 3, or 4 and the TPMI indicator field is 6 bits.

[0135] In Table 15, the mapping relationship between the TPMI index and the precoding matrix can be shown as in Table 12 above or Table 16 below when the number of transmission layers is 1 (1 layer); the mapping relationship between the TPMI index and the precoding matrix can be shown as in Table 3 above when the number of transmission layers is 2 (2 layers); the mapping relationship between the TPMI index and the precoding matrix can be shown as in Table 14 above when the number of transmission layers is 3 (3 layers); and the mapping relationship between the TPMI index and the precoding matrix can be shown as in Table 10 above when the number of transmission layers is 4 (4 layers).

[0136] Table 16 Precoding matrix W for single-layer transmission using four antenna ports and with precoding enabled. for single-layer transmission using four antenna portswith transform precoding enabled)

[0137] It should be noted that the correspondence between the PMI index and the precoding matrix can also change in the examples shown in Tables 9, 12, 13, 14 and 16.

[0138] In another example, for a PUSCH that uses a DFT-S-OFDM waveform and has transform precoding enabled, the information regarding precoding and the number of transmission layers can be shown in Table 17 below.

[0139] Table 17 shows the precoding information and transport layer number indication information when maxRank = 2, 3, or 4 and the TPMI indicator field is 6 bits.

[0140] In Table 17, the mapping relationship between the TPMI index and the precoding matrix is ​​as shown in Table 2 above when the number of transmission layers is 1 (1 layer); as shown in Table 3 above when the number of transmission layers is 2 (2 layers); as shown in Table 18 below when the number of transmission layers is 3 (3 layers); and as shown in Table 10 above when the number of transmission layers is 4 (4 layers).

[0141] Table 18 Precoding matrix W for three-layer transmission using four antenna ports and with precoding enabled. for three-layer transmission using four antenna ports withtransform precoding enabled)

[0142] The communication method proposed in this application introduces more precoding matrices, that is, it expands the precoding matrices in the related technology, so that the selection range of precoding matrices for PUSCH transmission of related waveforms is wider, and thus the uplink transmission performance is better.

[0143] Furthermore, as can be seen from the above examples, the communication method proposed in this application embodiment can use the redundant code points of the TPMI field to indicate the newly introduced precoding matrix. Therefore, without increasing the precoding indication overhead of the multilayer transmission of the DFT-s-OFDM waveform, the precoding indication field can be used to indicate more precoding matrices for the PUSCH transmission of the DFT-s-OFDM waveform, thus achieving better transmission performance of the PUSCH based on the DFT-s-OFDM waveform.

[0144] For example, if the PUSCH of a DFT-s-OFDM waveform supports multi-layer transmission, in order to ensure the low peak-to-average power ratio (PAPR) characteristic, related technologies can only select from a small number of precoding matrices, thus limiting transmission performance. However, the PUSCH of a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform can support all precoding matrices, and when the two waveforms dynamically switch, the bit length of the TPMI in the DCI that schedules the PUSCH transmission is determined based on the number of precoding matrices supported by the CP-OFDM waveform. Therefore, by introducing more precoding matrices, this embodiment of the application can use the redundant code points in the TPMI field to indicate more precoding matrices suitable for the DFT-OFDM waveform after the transmission waveform switches from CP-OFDM to DFT-OFDM, thereby achieving better uplink transmission performance.

[0145] The PUSCH of DFT-OFDM waveforms can also support non-codebook transmission. When introducing multi-layer transmission of non-codebook PUSCH, in order to prevent PAPR performance degradation, the precoding of the Sounding Reference Signal (SRS) for PUSCH of non-codebook transmission needs to meet certain conditions. However, for the PUSCH of CP-OFDM waveforms, there are no restrictions on the precoding of the SRS for PUSCH of non-codebook transmission. Therefore, using the same SRS resource configuration for both waveforms may reduce uplink transmission performance. To address this, this application proposes an alternative communication method, which can be implemented in... Figure 2 A further improved communication method based on the communication method shown can also be independent of... Figure 2 The communication method shown exists; the following will be combined with... Figure 3 This alternative communication method will be explained.

[0146] like Figure 3 As shown in the embodiments of this application, another communication method may include: Step 301: The terminal receives second information from the network-side device. The second information is used to configure a first SRS resource set, which corresponds to a PUSCH based on non-codebook transmission.

[0147] In some embodiments, the first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports.

[0148] Where L represents the number of transmission layers or the maximum number of transmission layers.

[0149] In some embodiments, Figure 3 The method shown may also include: The terminal receives third information from the network-side device, wherein the third information is used to indicate the number of transmission layers or the maximum number of transmission layers for PUSCH based on non-codebook transmission. The terminal determines the correspondence between the N SRS ports and the terminal's antenna ports based on the third information.

[0150] For example, if the third information indicates MaxRank or rank=1 (i.e., L=1), then each SRS port of the SRS resource is associated with the same antenna port; or, if the third information indicates MaxRank or rank=2 (i.e., L=2), then the SRS ports corresponding to the SRS resource are divided into two groups, and these two groups of SRS ports are associated with different antenna ports respectively.

[0151] In some embodiments, the third information is carried in the MAC CE, that is, the network-side device can indicate to the terminal the number of transport layers or the maximum number of transport layers for PUSCH for non-codebook transmission through the MAC CE.

[0152] In some embodiments, the first SRS resource set corresponds to a PUSCH based on non-codebook transmission and employing Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms.

[0153] In some embodiments, the second information is further used to configure a second SRS resource set, the second SRS resource set corresponding to a PUSCH based on non-codebook transmission and employing a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

[0154] In other words, in some embodiments, the network-side device can configure two SRS resource sets for non-codebook transmission to the terminal through third information. One of the two SRS resource sets corresponds to the DFT-s-OFDM waveform, and the other SRS resource set corresponds to the CP-OFDM waveform.

[0155] In some embodiments, Figure 3 The method shown may also include: The terminal receives a DCI sent by the network-side device, the DCI including information for indicating the waveform type of the PUSCH being transmitted; The terminal determines the SRS resource indicated by the SRS Resource Indication (SRI) field in the DCI based on the determined waveform type.

[0156] Figure 3 The communication method proposed in the illustrated embodiment provides a dedicated SRS resource set for PUSCH based on non-codebook transmission to the terminal by configuring the network-side device with such a set. The method also defines the correspondence between the SRS ports and antenna ports corresponding to this SRS resource set, ensuring that multiple SRS resources correspond to different antenna ports during multi-layer transmission. This guarantees low PAPR characteristics and improves the uplink transmission performance of PUSCH based on non-codebook transmission. Furthermore, in some embodiments, two sets of SRS resources are configured for DFT-OFDM and CP-OFDM waveforms respectively, instead of sharing a single set, for PUSCH based on non-codebook transmission. This further enhances the uplink transmission performance of PUSCH based on non-codebook transmission.

[0157] like Figure 4 As shown in the embodiments of this application, a communication method is also proposed, which may include: Step 401: The network-side device sends first information to the terminal, the first information being used to indicate uplink transmission parameters.

[0158] In some embodiments, the first information may be carried by downlink control information (DCI). Optionally, when the first information is carried by DCI, the DCI is used to schedule PUSCH, and the uplink transmission parameters may include precoding and transmission layer number.

[0159] In some embodiments, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transmission layer of 3.

[0160] The first set of precoding matrices may include at least one of the following:

[0161]

[0162] The second set of precoding matrices may include at least one of the following:

[0163]

[0164]

[0165]

[0166] The third set of precoding matrices may include at least one of the following:

[0167]

[0168] Where j is the imaginary unit, satisfying .

[0169] In some embodiments, the uplink transmission parameters are selected from the above set if at least one of the following conditions is met (or, in other words, the uplink transmission parameters in the above set are applicable if at least one of the following conditions is met): 1) The coherent transmission capability reported by the terminal is full-partial-noncoherent. 2) The precoding subset configured on the network-side device is restricted to full-partial-non-coherent; 3) The maximum number of transport layers for PUSCH based on codebook transmission configured on the network-side device is greater than 1; 4) The network-side device is configured to dynamically enable Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms based on codebook transmission of PUSCH; 5) The network-side device is configured to enable DFT-s-OFDM waveform; 9) The network-side device enables the DFT-S-OFDM waveform of PUSCH based on codebook transmission via DCI instruction; 7) The network-side device is configured to support an extended set of precoding matrices.

[0170] The DCI used for scheduling PUSCH includes precoding information and a transmission layer number (TPMI) field. The TPMI field indicates a precoding matrix selected from a predefined codebook set for the scheduled PUSCH transmission. The terminal determines the precoding matrix based on the TPMI field. Optionally, the codebook set includes rank 4 codewords and other codewords.

[0171] The communication method proposed in this application introduces more precoding matrices, that is, expands the set of precoding matrices, which makes the selection range of precoding matrices for PUSCH transmission of related waveforms wider, and thus improves the uplink transmission performance.

[0172] Furthermore, as can be seen from the above examples, the communication method proposed in this application embodiment can use the redundant code points of the TPMI field to indicate the newly introduced precoding matrix. Therefore, without increasing the precoding indication overhead of the multilayer transmission of the DFT-s-OFDM waveform, the precoding indication field can be used to indicate more precoding matrices for the PUSCH transmission of the DFT-s-OFDM waveform, thus achieving better transmission performance of the PUSCH using the DFT-s-OFDM waveform.

[0173] like Figure 5 As shown in the embodiments of this application, a communication method is also proposed, which may include: Step 501: The network-side device sends second information to the terminal. The second information is used to configure the first SRS resource set, which corresponds to PUSCH based on non-codebook transmission.

[0174] In some embodiments, the first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports.

[0175] Where L represents the number of transmission layers or the maximum number of transmission layers.

[0176] In some embodiments, Figure 5 The method shown may also include: The network-side device sends third information to the terminal, wherein the third information is used to indicate the number of transmission layers or the maximum number of transmission layers for PUSCH based on non-codebook transmission.

[0177] For example, if the third information indicates MaxRank or rank=1 (i.e., L=1), then each SRS port of the SRS resource is associated with the same antenna port; or, if the third information indicates MaxRank or rank=2 (i.e., L=2), then the SRS ports corresponding to the SRS resource are divided into two groups, and these two groups of SRS ports are associated with different antenna ports respectively.

[0178] In some embodiments, the third information is carried in the MAC CE, that is, the network-side device can indicate to the terminal the number of transport layers or the maximum number of transport layers for PUSCH for non-codebook transmission through the MAC CE.

[0179] In some embodiments, the first SRS resource set corresponds to a PUSCH based on non-codebook transmission and employing Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms.

[0180] In some embodiments, the second information is further used to configure a second SRS resource set, the second SRS resource set corresponding to a PUSCH based on non-codebook transmission and employing a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

[0181] In other words, in some embodiments, the network-side device can configure two SRS resource sets for non-codebook transmission to the terminal through third information. One of the two SRS resource sets corresponds to the DFT-s-OFDM waveform, and the other SRS resource set corresponds to the CP-OFDM waveform.

[0182] In some embodiments, Figure 5 The method shown may also include: The network-side device sends downlink control information (DCI) to the terminal, wherein the DCI includes information indicating the waveform type for transmitting the PUSCH, and the waveform type is used by the terminal to determine the SRS resource indicated by the SRI field in the DCI.

[0183] Figure 5The communication method proposed in the illustrated embodiment provides a dedicated SRS resource set for PUSCH based on non-codebook transmission to the terminal by configuring the network-side device with such a set. The method also defines the correspondence between the SRS ports and antenna ports corresponding to this SRS resource set, ensuring that multiple SRS resources correspond to different antenna ports during multi-layer transmission. This guarantees low PAPR characteristics and improves the uplink transmission performance of PUSCH based on non-codebook transmission. Furthermore, in some embodiments, two sets of SRS resources are configured for DFT-OFDM and CP-OFDM waveforms respectively, instead of sharing a single set, for PUSCH based on non-codebook transmission. This further enhances the uplink transmission performance of PUSCH based on non-codebook transmission.

[0184] It should be noted that, Figure 5 One of the communication methods shown can be in Figure 4 A further improved communication method based on the communication method shown can also be independent of... Figure 4 The communication method shown exists.

[0185] This application provides a communication method in which the executing entity can be a virtual device. This application uses a virtual device executing the communication method as an example to illustrate the communication device provided in this application.

[0186] like Figure 6 As shown, one embodiment of this application proposes a communication device 600, which can be used in a terminal. The device 600 may include: a first receiving module 601, which is used to receive first information from a network-side device, wherein the first information is used to indicate uplink transmission parameters.

[0187] In some embodiments, the first information may be carried by downlink control information (DCI). Optionally, when the first information is carried by DCI, the DCI is used to schedule PUSCH, and the uplink transmission parameters may include precoding and transmission layer number.

[0188] In some embodiments, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transmission layer of 3.

[0189] The first set of precoding matrices may include at least one of the following:

[0190]

[0191] The second set of precoding matrices may include at least one of the following:

[0192]

[0193]

[0194]

[0195] The third set of precoding matrices may include at least one of the following:

[0196]

[0197] Where j is the imaginary unit, satisfying .

[0198] In some embodiments, Figure 6 The apparatus 600 shown may further include: a determining module, configured to determine, under at least one of the following conditions, that the precoding matrix corresponding to the uplink transmission parameters indicated by the first information belongs to the first precoding matrix set, the second precoding matrix set, or the third precoding matrix set: 1) The coherent transmission capability reported by the terminal is full-partial-noncoherent. 2) The precoding subset configured on the network-side device is restricted to full-partial-non-coherent; 3) The maximum number of transport layers for PUSCH based on codebook transmission configured on the network-side device is greater than 1; 4) The network-side device is configured to dynamically enable Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms based on codebook transmission of PUSCH; 5) The network-side device is configured to enable DFT-s-OFDM waveform; 6) The network-side device enables the DFT-S-OFDM waveform of PUSCH based on codebook transmission via DCI instruction; 7) The network-side device is configured to support an extended set of precoding matrices.

[0199] The DCI used for scheduling PUSCH includes precoding information and a transmission layer number (TPMI) field. The TPMI field indicates a precoding matrix selected from a predefined codebook set for the scheduled PUSCH transmission. The terminal determines the precoding matrix based on the TPMI field. Optionally, the codebook set includes rank 4 codewords and other codewords.

[0200] The communication device 600 proposed in this application introduces more precoding matrices, that is, it expands the precoding matrices in the related art, so that the selection range of precoding matrices for PUSCH transmission of related waveforms is wider, and thus the uplink transmission performance is better.

[0201] Optionally, the communication device 600 proposed in this application embodiment can use the redundant code points of the TPMI field to indicate the newly introduced precoding matrix. Therefore, without increasing the precoding indication overhead of the multilayer transmission of the DFT-s-OFDM waveform, the precoding indication field can be used to indicate more precoding matrices for the PUSCH transmission of the DFT-s-OFDM waveform, thus achieving better transmission performance of the PUSCH using the DFT-s-OFDM waveform.

[0202] The communication device 600 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.

[0203] like Figure 7 As shown, one embodiment of this application proposes a communication device 700, which can be used as a terminal. The device 700 may include: a second receiving module 701, used to receive second information from a network-side device, the second information being used to configure a first SRS resource set, the first SRS resource set corresponding to PUSCH based on non-codebook transmission.

[0204] In some embodiments, the first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports.

[0205] Where L represents the number of transmission layers or the maximum number of transmission layers.

[0206] In some embodiments, Figure 7 The communication device 700 shown may further include: The third receiving module is used to receive third information from the network-side device, wherein the third information is used to indicate the number of transmission layers or the maximum number of transmission layers for PUSCH based on non-codebook transmission. The first determining module is used to determine the correspondence between the N SRS ports and the antenna ports of the terminal based on the third information.

[0207] In some embodiments, the third information is carried in the MAC CE, that is, the network-side device can indicate to the terminal the number of transport layers or the maximum number of transport layers for PUSCH for non-codebook transmission through the MAC CE.

[0208] In some embodiments, the first SRS resource set corresponds to a PUSCH based on non-codebook transmission and employing Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms.

[0209] In some embodiments, the second information is further used to configure a second SRS resource set, the second SRS resource set corresponding to a PUSCH based on non-codebook transmission and employing a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

[0210] In other words, in some embodiments, the network-side device can configure two SRS resource sets for non-codebook transmission to the terminal through third information. One of the two SRS resource sets corresponds to the DFT-s-OFDM waveform, and the other SRS resource set corresponds to the CP-OFDM waveform.

[0211] In some embodiments, Figure 7 The communication device 700 shown may further include: The fourth receiving module is used to receive the DCI sent by the network-side device, the DCI including information indicating the waveform type for transmitting the PUSCH; The second determining module is used to determine the SRS resource indicated by the SRI field in the DCI based on the determined waveform type.

[0212] Figure 7The communication device 700 proposed in the illustrated embodiment provides a dedicated SRS resource set for PUSCH based on non-codebook transmission to the terminal by configuring the network-side device with a dedicated SRS resource set and defining the correspondence between the SRS ports and antenna ports corresponding to the SRS resource set. This ensures that multiple SRS resources correspond to different antenna ports during multi-layer transmission, thereby guaranteeing low PAPR characteristics and improving the uplink transmission performance of PUSCH based on non-codebook transmission. In addition, in some embodiments, two sets of SRS resources are configured for DFT-OFDM waveforms and CP-OFDM waveforms respectively for PUSCH based on non-codebook transmission, instead of sharing a single set, which can further improve the uplink transmission performance of PUSCH based on non-codebook transmission.

[0213] The communication device 700 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.

[0214] like Figure 8 As shown, one embodiment of this application proposes a communication device 800, which can be used in network-side equipment. The device 800 may include: a first sending module 801, used to send first information to a terminal, wherein the first information is used to indicate uplink transmission parameters.

[0215] In some embodiments, the first information may be carried by downlink control information (DCI). Optionally, when the first information is carried by DCI, the DCI is used to schedule PUSCH, and the uplink transmission parameters may include precoding and transmission layer number.

[0216] In some embodiments, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transmission layer of 3.

[0217] The first set of precoding matrices may include at least one of the following:

[0218]

[0219] The second set of precoding matrices may include at least one of the following:

[0220]

[0221]

[0222]

[0223] The third set of precoding matrices may include at least one of the following:

[0224]

[0225] Where j is the imaginary unit, satisfying .

[0226] In some embodiments, the precoding matrix corresponding to the uplink transmission parameters indicated by the first information belongs to the first precoding matrix set, the second precoding matrix set, or the third precoding matrix set if at least one of the following conditions is met: 1) The coherent transmission capability reported by the terminal is full-partial-noncoherent. 2) The precoding subset configured on the network-side device is restricted to full-partial-non-coherent; 3) The maximum number of transport layers for PUSCH based on codebook transmission configured on the network-side device is greater than 1; 4) The network-side device is configured to dynamically enable Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms based on codebook transmission of PUSCH; 5) The network-side device is configured to enable DFT-s-OFDM waveform; 6) The network-side device enables the DFT-S-OFDM waveform of PUSCH based on codebook transmission via DCI instruction; 7) The network-side device is configured to support an extended set of precoding matrices.

[0227] The DCI used for scheduling PUSCH includes precoding information and a transmission layer number (TPMI) field. The TPMI field indicates a precoding matrix selected from a predefined codebook set for the scheduled PUSCH transmission. The terminal determines the precoding matrix based on the TPMI field. Optionally, the codebook set includes rank 4 codewords and other codewords.

[0228] The communication device 800 proposed in this application introduces more precoding matrices, that is, expands the set of precoding matrices, which makes the selection range of precoding matrices for PUSCH transmission of related waveforms wider, and thus improves the uplink transmission performance.

[0229] The communication device 800 provided in this application embodiment can achieve... Figure 4 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0230] like Figure 9 As shown, one embodiment of this application proposes a communication device 900, which can be used in network-side equipment. The device 900 may include: a second sending module 901, used to send second information to a terminal, the second information being used to configure a first SRS resource set, the first SRS resource set corresponding to PUSCH based on non-codebook transmission.

[0231] In some embodiments, the first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports.

[0232] Where L represents the number of transmission layers or the maximum number of transmission layers.

[0233] In some embodiments, Figure 9The communication device 900 shown may further include: a third transmitting module for transmitting third information to the terminal, wherein the third information is used to indicate the number of transmission layers or the maximum number of transmission layers for PUSCH based on non-codebook transmission.

[0234] For example, if the third information indicates MaxRank or rank=1 (i.e., L=1), then each SRS port of the SRS resource is associated with the same antenna port; or, if the third information indicates MaxRank or rank=2 (i.e., L=2), then the SRS ports corresponding to the SRS resource are divided into two groups, and these two groups of SRS ports are associated with different antenna ports respectively.

[0235] In some embodiments, the third information is carried in the MAC CE, that is, the third sending module can indicate to the terminal the number of transmission layers or the maximum number of transmission layers for PUSCH for non-codebook transmission through the MAC CE.

[0236] In some embodiments, the first SRS resource set corresponds to a PUSCH based on non-codebook transmission and employing Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms.

[0237] In some embodiments, the second information is further used to configure a second SRS resource set, the second SRS resource set corresponding to a PUSCH based on non-codebook transmission and employing a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

[0238] In other words, in some embodiments, the network-side device can configure two SRS resource sets for non-codebook transmission to the terminal through third information. One of the two SRS resource sets corresponds to the DFT-s-OFDM waveform, and the other SRS resource set corresponds to the CP-OFDM waveform.

[0239] In some embodiments, Figure 9 The communication device 900 shown may further include: a fourth transmitting module for transmitting downlink control information (DCI) to the terminal, wherein the DCI includes information indicating the waveform type for transmitting the PUSCH, and the waveform type is used by the terminal to determine the SRS resource indicated by the SRI field in the DCI.

[0240] Figure 9The communication device 900 proposed in the illustrated embodiment configures a dedicated SRS resource set for PUSCH based on non-codebook transmission to the terminal and defines the correspondence between the SRS ports and antenna ports corresponding to the SRS resource set. This ensures that multiple SRS resources correspond to different antenna ports during multi-layer transmission, thereby guaranteeing low PAPR characteristics and improving the uplink transmission performance of PUSCH based on non-codebook transmission. In addition, in some embodiments, for PUSCH based on non-codebook transmission, two sets of SRS resources are configured for DFT-OFDM waveforms and CP-OFDM waveforms respectively, instead of sharing one set, which can further improve the uplink transmission performance of PUSCH based on non-codebook transmission.

[0241] The communication device 900 provided in this application embodiment can achieve Figure 5 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0242] like Figure 10 As shown in the illustration, this application also provides a communication device 1000, including a processor 1001 and a memory 1002. The memory 1002 stores programs or instructions that can run on the processor 1001. For example, when the communication device 1000 is a terminal, the program or instructions executed by the processor 1001 implement the various steps of the above-described communication method embodiments and achieve the same technical effect. When the communication device 1000 is a network-side device, the program or instructions executed by the processor 1001 implement the various steps of the above-described communication method embodiments and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0243] 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 or Figure 3 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 6 or Figure 7 The communication device shown. Specifically, Figure 11 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application. The terminal 1100 includes, but is not limited to, at least some of the following components: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, and processor 1110.

[0244] Those skilled in the art will understand that the terminal 1100 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1110 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 11 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.

[0245] It should be understood that, in this embodiment, the input unit 1104 may include a graphics processor 11041 and a microphone 11042. The graphics processor 11041 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 1106 may include a display panel 11061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1107 includes at least one of a touch panel 11071 and other input devices 11072. The touch panel 11071 is also called a touch screen. The touch panel 11071 may include a touch detection device and a touch controller. Other input devices 11072 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.

[0246] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1101 can transmit it to the processor 1110 for processing; in addition, the radio frequency unit 1101 can send uplink data to the network-side device. Typically, the radio frequency unit 1101 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0247] The memory 1109 can be used to store software programs or instructions, as well as various data. The memory 1109 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 1109 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 1109 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0248] Processor 1110 may include one or more processing units; optionally, processor 1110 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 1110.

[0249] In some embodiments, the radio frequency unit 1101 is configured to receive first information from a network-side device, the first information being used to indicate uplink transmission parameters.

[0250] In some embodiments, the first information may be carried by downlink control information (DCI). Optionally, when the first information is carried by DCI, the DCI is used to schedule PUSCH, and the uplink transmission parameters may include precoding and transmission layer number.

[0251] In some embodiments, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transmission layer of 3.

[0252] The first set of precoding matrices may include at least one of the following:

[0253]

[0254] The second set of precoding matrices may include at least one of the following:

[0255]

[0256]

[0257]

[0258] The third set of precoding matrices may include at least one of the following:

[0259]

[0260] Where j is the imaginary unit, satisfying .

[0261] The terminal proposed in this application has a wider range of choices for the precoding matrix used for PUSCH transmission of related waveforms due to the introduction of more precoding matrices, that is, the expansion of the precoding matrix in the related technology. This results in better uplink transmission performance.

[0262] In other embodiments, radio frequency unit 1101 is used to receive second information from network-side devices, the second information being used to configure a first SRS resource set, the first SRS resource set corresponding to PUSCH based on non-codebook transmission.

[0263] In some embodiments, the first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports.

[0264] Where L represents the number of transmission layers or the maximum number of transmission layers.

[0265] The terminal proposed in this application embodiment has a network-side device that configures a dedicated SRS resource set for PUSCH based on non-codebook transmission and defines the correspondence between the SRS port and the antenna port corresponding to the SRS resource set. This ensures that multiple SRS resources correspond to different antenna ports during multi-layer transmission, thereby guaranteeing low PAPR characteristics and improving the uplink transmission performance of PUSCH based on non-codebook transmission.

[0266] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0267] 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 4 or Figure 5 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.

[0268] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 8 or Figure 9 The communication device shown. (As shown) Figure 12As shown, the network-side device 1200 includes: an antenna 121, a radio frequency (RF) device 122, a baseband device 123, a processor 124, and a memory 125. The antenna 121 is connected to the RF device 122. In the uplink direction, the RF device 122 receives information through the antenna 121 and transmits the received information to the baseband device 123 for processing. In the downlink direction, the baseband device 123 processes the information to be transmitted and sends it to the RF device 122. The RF device 122 processes the received information and transmits it through the antenna 121.

[0269] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 123, which includes a baseband processor.

[0270] The baseband device 123 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 12 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 125 via a bus interface to call the program in the memory 125 and execute the network-side device operations shown in the above method embodiment.

[0271] The network-side device may also include a network interface 126, such as a Common Public Radio Interface (CPRI).

[0272] Specifically, the network-side device 1200 in this application embodiment further includes: instructions or programs stored in memory 125 and executable on processor 124, wherein processor 124 calls the instructions or programs in memory 125 to execute. Figure 8 or Figure 9 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0273] 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 communication method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0274] The processor mentioned above is the processor in the terminal described in the above embodiments. 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.

[0275] 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 communication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0276] 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.

[0277] 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 communication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0278] This application also provides a communication system, including: a terminal and a network-side device, wherein the terminal can be used to perform... Figure 2 The network-side device can be used to execute the steps of the communication method described above. Figure 3 The steps of the communication method described above.

[0279] 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.

[0280] 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 includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0281] 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 communication method, characterized in that, The method includes: The terminal receives first information from the network-side device, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following: The second set of precoding matrices includes at least one of the following: The third set of precoding matrices includes at least one of the following: Where j is the imaginary unit, satisfying .

2. The method according to claim 1, characterized in that, Also includes: The precoding matrix corresponding to the uplink transmission parameters indicated by the first information is determined to belong to the first precoding matrix set, the second precoding matrix set, or the third precoding matrix set if at least one of the following conditions is met: The coherent transmission capability reported by the terminal is full-partial-noncoherent. The precoding subset configured on the network-side device is restricted to full-partial-non-coherent; The maximum number of transmission layers of the Physical Uplink Shared Channel (PUSCH) configured by the network-side device based on codebook transmission is greater than 1. The network-side device is configured to dynamically enable Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms based on codebook transmission of PUSCH. The network-side device is configured to enable DFT-s-OFDM waveform; The network-side device enables the DFT-S-OFDM waveform of PUSCH based on codebook transmission by instructing downlink control information (DCI). The network-side device is configured to support an extended set of precoding matrices.

3. A communication method, characterized in that, The method includes: The terminal receives second information from the network-side device. The second information is used to configure a first SRS resource set, which corresponds to a PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

4. The method according to claim 3, characterized in that, The method further includes: The terminal receives third information from the network-side device, wherein the third information is used to indicate the number of transmission layers or the maximum number of transmission layers for PUSCH based on non-codebook transmission. The terminal determines the correspondence between the N SRS ports and the terminal's antenna ports based on the third information.

5. The method according to claim 4, characterized in that, The third information is carried in MAC CE.

6. The method according to any one of claims 3-5, characterized in that, The first SRS resource set corresponds to the PUSCH based on non-codebook transmission and using Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms.

7. The method according to any one of claims 3-6, characterized in that, The second information is also used to configure a second SRS resource set, which corresponds to a PUSCH based on non-codebook transmission and using a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

8. The method according to any one of claims 3-7, characterized in that, The method further includes: The terminal receives downlink control information (DCI) sent by the network-side device, wherein the DCI includes information indicating the waveform type for transmitting the PUSCH; The terminal determines the SRS resource indicated by the SRI field in the DCI based on the determined waveform type.

9. A communication method, characterized in that, The method includes: The network-side device sends first information to the terminal, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following: The second set of precoding matrices includes at least one of the following: The third set of precoding matrices includes at least one of the following: Where j is the imaginary unit, satisfying .

10. The method according to claim 9, characterized in that, The precoding matrix corresponding to the uplink transmission parameters indicated by the first information belongs to the first precoding matrix set, the second precoding matrix set, or the third precoding matrix set if at least one of the following conditions is met: The coherent transmission capability reported by the terminal is full-partial-noncoherent. The precoding subset configured on the network-side device is restricted to full-partial-non-coherent; The maximum number of transmission layers of the Physical Uplink Shared Channel (PUSCH) configured by the network-side device based on codebook transmission is greater than 1. The network-side device is configured to dynamically enable Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms based on codebook transmission of PUSCH. The network-side device is configured to enable DFT-s-OFDM waveform; The network-side device enables the DFT-S-OFDM waveform of PUSCH based on codebook transmission by instructing downlink control information (DCI). The network-side device is configured to support an extended set of precoding matrices.

11. A communication method, characterized in that, The method includes: The network-side device sends second information to the terminal. The second information is used to configure the first SRS resource set, which corresponds to PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, wherein the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

12. The method according to claim 11, characterized in that, The method further includes: The network-side device sends third information to the terminal, wherein the third information is used to indicate the number of transmission layers or the maximum number of transmission layers for PUSCH based on non-codebook transmission.

13. The method according to claim 12, characterized in that, The third information is carried in MAC CE.

14. The method according to any one of claims 11-13, characterized in that, The first SRS resource set corresponds to the PUSCH based on non-codebook transmission and using Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveforms.

15. The method according to any one of claims 11-14, characterized in that, The second information is also used to configure a second SRS resource set, which corresponds to a PUSCH based on non-codebook transmission and using a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform.

16. The method according to any one of claims 11-15, characterized in that, The method further includes: The network-side device sends downlink control information (DCI) to the terminal, wherein the DCI includes information indicating the waveform type for transmitting the PUSCH, and the waveform type is used by the terminal to determine the SRS resource indicated by the SRI field in the DCI.

17. A communication device, characterized in that, include: The first receiving module is used to receive first information from the network-side device, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following: The second set of precoding matrices includes at least one of the following: The third set of precoding matrices includes at least one of the following: Where j is the imaginary unit, satisfying .

18. A communication device, characterized in that, include: The second receiving module is used to receive second information from the network-side device. The second information is used to configure the first SRS resource set, which corresponds to PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, and the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

19. A communication device, characterized in that, include: The first sending module is used to send first information to the terminal, the first information being used to indicate uplink transmission parameters; Wherein, the precoding matrix corresponding to the uplink transmission parameters belongs to a set of precoding matrices, and the set of precoding matrices includes at least one of the following: The first set of precoding matrices with a transport layer number of 1; The second set of precoding matrices with a transport layer number of 2; The third precoding matrix set with a transport layer number of 3; The first set of precoding matrices includes at least one of the following: The second set of precoding matrices includes at least one of the following: The third set of precoding matrices includes at least one of the following: Where j is the imaginary unit, satisfying .

20. A communication device, characterized in that, include: The second sending module is used to send second information to the terminal. The second information is used to configure the first SRS resource set, and the first SRS resource set corresponds to PUSCH based on non-codebook transmission. The first SRS resource set includes N SRS resources, wherein the correspondence between the N SRS ports corresponding to the N SRS resources and the antenna ports of the terminal satisfies at least one of the following: When L is 1, the N SRS ports correspond to the same antenna port; When L is 2 and N is 4, two SRS resource ports among the N SRS ports form a group, and a group of SRS resource ports corresponds to the same antenna port. When L is 2 and N is 2, the N SRS ports correspond to different antenna ports; Where L represents the number of transmission layers or the maximum number of transmission layers.

21. 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 communication method as described in any one of claims 1 to 8.

22. 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 communication method as described in any one of claims 9 to 16.

23. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the communication method as described in any one of claims 1 to 8, or implement the steps of the communication method as described in any one of claims 9 to 16.

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