CN116828544A

CN116828544A - Transmission mode determining method, device, terminal and network side equipment

Info

Publication number: CN116828544A
Application number: CN202210283941.5A
Authority: CN
Inventors: 孙荣荣; 刘昊; 塔玛拉卡·拉盖施; 宋扬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2023-09-29
Also published as: WO2023179478A1

Abstract

The application discloses a transmission mode determining method, a device, a terminal and network side equipment, belonging to the technical field of communication, wherein the transmission mode determining method provided by the embodiment of the application comprises the following steps: the terminal receives first indication information; the terminal determines a transmission mode of uplink data based on the first indication information, wherein the transmission mode comprises at least one of the following: space division multiplexing SDM mode, frequency division multiplexing FDM mode, single frequency network SFN mode, time division multiplexing TDM mode.

Description

Transmission mode determining method, device, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a transmission mode determining method, a transmission mode determining device, a terminal and network side equipment.

Background

When the terminal transmits uplink data, the terminal performs precoding on the uplink data and then maps the uplink data to uplink channel resources for transmission. At present, for uplink data transmission of different data transmission scenes or different services, a terminal performs uplink data transmission based on a single fixed transmission mode, so that an uplink data transmission mode is inflexible.

Disclosure of Invention

The embodiment of the application provides a transmission mode determining method, a device, a terminal and network side equipment, which can solve the problem that the uplink transmission mode of the terminal is inflexible in the related technology.

In a first aspect, a transmission mode determining method is provided, including:

the terminal receives first indication information;

the terminal determines a transmission mode of uplink data based on the first indication information, wherein the transmission mode comprises at least one of the following:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

In a second aspect, a transmission mode determining method is provided, including:

the network side equipment sends first indication information to the terminal, wherein the first indication information is used for indicating a transmission mode of uplink data transmission by the terminal;

wherein the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

In a third aspect, there is provided a transmission mode determining apparatus including:

the receiving module is used for receiving the first indication information;

a determining module, configured to determine a transmission mode of uplink data based on the first indication information, where the transmission mode includes at least one of:

A space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

In a fourth aspect, there is provided a transmission mode determining apparatus including:

the terminal comprises a sending module, a receiving module and a receiving module, wherein the sending module is used for sending first indication information to the terminal, and the first indication information is used for indicating a transmission mode of uplink data transmission by the terminal;

wherein the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to receive first indication information, and the processor is configured to determine a transmission mode of uplink data based on the first indication information, where the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

A single frequency network SFN mode;

time division multiplexing TDM mode.

In a seventh aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the second aspect.

An eighth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to send first indication information to a terminal, where the first indication information is used to indicate a transmission mode of uplink data transmission by the terminal;

wherein the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

In a ninth aspect, there is provided a communication system comprising: a terminal operable to perform the steps of the transmission mode determination method as described in the first aspect, and a network side device operable to perform the steps of the transmission mode determination method as described in the second aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect or performs the steps of the method according to the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute a program or instructions to implement the transmission mode determination method according to the first aspect or to implement the transmission mode determination method according to the second aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the transmission mode determination method according to the first aspect or to implement the steps of the transmission mode determination method according to the second aspect.

In the embodiment of the application, the terminal determines the transmission mode of the uplink data based on the received first indication information, namely, a scheme for dynamically determining the transmission mode of the uplink data of the terminal is provided, so that the uplink data transmission mode of the terminal can be dynamically indicated, the uplink data transmission of the terminal is not limited to a fixed transmission mode any more, and the flexibility of the uplink data transmission of the terminal can be improved. In addition, the transmission mode includes at least one of an SDM mode, an FDM mode, an SFN mode and a TDM mode, and then the terminal can select one of the at least one transmission mode to perform uplink data transmission, so that the uplink data transmission of the terminal is not limited to a single fixed transmission mode, and the flexibility and diversity of the uplink data transmission of the terminal are further improved.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart of a transmission mode determining method according to an embodiment of the present application;

fig. 2a is a schematic diagram of a transmission mode in a transmission mode determining method according to an embodiment of the present application;

FIG. 2b is a schematic diagram of a transmission mode determination method according to a second embodiment of the present application;

FIG. 2c is a third diagram illustrating a transmission mode in a transmission mode determining method according to an embodiment of the present application;

FIG. 2d is a schematic diagram of a transmission mode in a transmission mode determining method according to an embodiment of the present application;

fig. 2e is a schematic diagram of a transmission mode in a transmission mode determining method according to an embodiment of the present application;

FIG. 2f is a schematic diagram of a transmission mode in a transmission mode determining method according to an embodiment of the present application;

FIG. 2g is a schematic diagram of a transmission mode determination method according to an embodiment of the present application;

fig. 3 is a flowchart of another transmission mode determining method according to an embodiment of the present application;

fig. 4 is a block diagram of a transmission mode determining apparatus according to an embodiment of the present application;

Fig. 5 is a block diagram of another transmission mode determining apparatus according to an embodiment of the present application;

fig. 6 is a block diagram of a communication device according to an embodiment of the present application;

fig. 7 is a block diagram of a terminal according to an embodiment of the present application;

fig. 8 is a block diagram of a network side device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or core network device, wherein the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission receiving point (Transmitting Receiving Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited.

The transmission mode determining method provided by the embodiment of the application is described in detail below through some embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a transmission mode determining method according to an embodiment of the present application, where the method is applied to a terminal. As shown in fig. 2, the method comprises the steps of:

step 201, the terminal receives the first indication information.

In the embodiment of the present application, the first indication information may be sent to the terminal by the network side device. Optionally, the first indication information may be explicitly indicated by the network side device through signaling; for example, the first indication information may be radio resource control (Radio Resource Control, RRC) signaling sent by the network side device; or, the first indication information may be downlink control information (Downlink Control Information, DCI) sent by the network side device; or, the first indication information may also be a media access control element (Medium Access Control Control Element, MAC CE) signaling sent by the network side device; or, the first indication information may also be an indication implicitly performed by the network side device through signaling.

Optionally, the first indication information is used for indicating a transmission mode of uplink data transmission of the terminal. For example, the network side device instructs the terminal to perform at least one transmission mode of uplink data transmission through RRC signaling; or, the network side equipment indicates at least one transmission mode through an indication domain contained in the DCI; or, the network side device instructs the terminal to perform the transmission mode of uplink data transmission by indicating the demodulation reference signal (Demodulation Reference Signal, DMRS), and so on, which is not excessively listed in this embodiment.

Step 202, the terminal determines a transmission mode of uplink data based on the first indication information.

Wherein the transmission mode includes at least one of:

space division multiplexing (Space Division Multiplexing, SDM) mode;

frequency division multiplexing (Frequency Division Multiplexing, FDM) mode;

-single frequency network (Single Frequency Network, SFN) mode;

time division multiplexing (Time Division Multiplexing, TDM) mode.

Alternatively, the first indication information may be at least one of the above transmission modes. For example, if the first indication information indicates that the terminal performs uplink data transmission in the SDM mode, the terminal determines that the uplink data transmission mode is the SDM mode based on the first indication information, and then the terminal performs uplink data transmission in the SDM mode; or, the first indication information may be a mode for indicating the terminal to perform uplink data transmission, including an SDM mode and an FDM mode, and the terminal may determine that the uplink data transmission mode may be any one of the SDM mode and the FDM mode based on the first indication information, and the terminal may perform uplink data transmission in the SDM mode or perform uplink data transmission in the FDM mode. Of course, the specific content of the transmission mode indicated by the first indication information may be other situations, which is not specifically mentioned in this embodiment.

In the embodiment of the application, the terminal determines the transmission mode of the uplink data based on the received first indication information, namely, a scheme for dynamically determining the transmission mode of the uplink data of the terminal is provided, so that the uplink data transmission of the terminal can be dynamically indicated, the uplink data transmission of the terminal is not limited to a fixed transmission mode any more, and the flexibility of the uplink data transmission of the terminal can be improved. In addition, the transmission mode includes at least one of an SDM mode, an FDM mode, an SFN mode and a TDM mode, and then the terminal can select one of the at least one transmission mode to perform uplink data transmission, so that the uplink data transmission of the terminal is not limited to a single fixed transmission mode, and the flexibility and diversity of the uplink data transmission of the terminal are further improved.

Optionally, the SDM mode includes a first transmission mode and a second transmission mode, where the first transmission mode corresponds to one transmission Codeword (CW), and the second transmission mode corresponds to two transmission codewords;

in the first transmission mode, the terminal uses two target objects to transmit one RV of one codeword, and in the second transmission mode, the terminal uses two target objects to respectively transmit two codewords, wherein a first transmission layer uses the first target object, and a second transmission layer uses the second target object.

The FDM mode includes a third transmission mode, a fourth transmission mode and a fifth transmission mode, the third transmission mode corresponds to transmitting one redundancy version (redundancy version, rv) of one codeword, the fourth transmission mode corresponds to transmitting two redundancy versions of one codeword, and the fifth transmission mode corresponds to transmitting two codewords;

the SFN mode correspondingly transmits two identical redundancy versions of one codeword;

the TDM pattern corresponds to transmitting two redundancy versions of one codeword.

Specifically, as shown in fig. 2a, the first transmission mode included in the SDM mode corresponds to one codeword (single CW) or one transmission block (single TB), and corresponds to one redundancy version (RV 0), and the terminal may perform uplink data transmission to two transmission and reception points (Transmission and Reception Point, TRP) through two layers (layers) respectively using two beams respectively: layer0 for TRP 0, layer1 for TRP 1.

As shown in fig. 2b, the second transmission mode included in the SDM mode corresponds to two codewords: CW0 and CW1, terminals may transmit uplink data to two TRPs using two beams through two layers (layers), respectively: layer0 for TRP 0 and layer1 for TRP 1, wherein layer0 for TRP 0 corresponds to CW0 and layer1 for TRP 1 corresponds to CW1.

As shown in fig. 2c, the third transmission mode included in the FDM mode corresponds to one codeword or one redundancy version of a transmission block (single CW/TB), and the terminal may perform uplink data transmission to two TRPs through two groups of physical resource blocks (Physical Resource Block, PRBs), where each group includes at least one PRB, for example, the two groups of PRBs are respectively a first PRBs and a second PRBs, and the uplink data transmission of the terminal is: the first PRBs for TRP 0, the second PRBs for TRP 1..

As shown in fig. 2d, the FDM mode includes a fourth transmission mode corresponding to one codeword or transmission block (single CW/TB), two redundancy versions (e.g., RV0 and RV 1), and the terminal may perform uplink data transmission to two TRPs through two groups of PRBs, respectively: the first PRBs for TRP 0 and the second PRBs for TRP 1, wherein the first PRBs for TRP 0 correspond to RV0, and the second PRBs for TRP 1 correspond to RV1.

As shown in fig. 2e, the FDM mode includes a fifth transmission mode corresponding to two codewords (e.g., CW0 and CW 1), and the terminal may perform uplink data transmission to two TRPs through two groups of PRBs, respectively: the first PRBs for TRP 0 and the second PRBs for TRP 1, wherein the first PRBs for TRP 0 correspond to CW0 and the second PRBs for TRP 1 correspond to CW1.

As shown in fig. 2f, the SFN mode corresponds to two identical redundancy versions (e.g., RV 0) of one codeword, and the terminal may perform uplink data transmission to two TRPs through two layers (layers), respectively: layer0 for TRP 0 and layer1 for TRP1, wherein layer0 for TRP 0 corresponds to RV0 and layer1 for TRP1 also corresponds to RV0.

As shown in fig. 2g, the TDM mode corresponds to 2 redundancy versions of one codeword, and the terminal may perform retransmission of uplink data based on the number of repetitions (e.g., repetition1 and repetition2 shown in fig. 2 g).

In the embodiment of the present application, the transmission mode is associated with at least one target object, where the target object is parameter information related to uplink data transmission. For example, the target object may be a target object including: beams (beams), transmission and reception points (Transmission and Reception Point, TRP), antenna panels (panel), transmission configuration indication (Transmission Configuration Indicator, TCI) status, TCI status pool, spatial relationship (spatial correlation), sounding reference signal (Sounding Reference Signal, SRS) resources, SRS resource sets, reference signals, path loss reference signals, and the like.

Wherein the antenna panel may also be referred to as: antenna group, antenna port group, antenna set, antenna port set, beam sub-set, antenna array, antenna port array, antenna sub-array, antenna port sub-array, logical entity, entity or antenna entity, antenna panel entity (panel entity), timing error group (timing error group, TEG), terminal capability value set, etc.

The antenna panel includes a corresponding panel identifier, where the panel identifier may be: an antenna panel identifier, a reference signal resource set identifier, a TCI state identifier, a Quasi co-location (QCL) information identifier, a spatial relationship identifier, a terminal capability value index, a terminal capability value set index, and the like.

The beam information involved may also be referred to as: identification information of beams, spatial relation (spatial relation) information, spatial transmit filter (spatial domain transmission filter) information, spatial receive filter (spatial domain reception filter) information, spatial filter (spatial filter) information, transmission configuration indication state (TCI state) information, QCL parameters, and the like. The downstream beam information may be generally represented by TCI state information or QCL information, and the upstream beam information may be generally represented by TCI state information.

In the embodiment of the present application, any of the above transmission modes may be associated with two target objects, and the target objects associated with each transmission mode may be different. For example, the target object associated with the SDM mode may be a set of resources including beams, panel, TCI states, SRS, and the target object associated with the FDM mode may be a set of resources including TRP, panel, beams, spatial relationships, SRS, and so on. The foregoing is merely exemplary, and does not constitute a specific limitation on the target object associated with the transmission mode in the present application.

When the target object associated with the transmission mode includes at least one of a beam, a panel and an SRS resource set, the terminal can simultaneously perform uplink data transmission based on at least one panel, and based on the transmission mode, multiple panels can simultaneously transmit the same or different data on the same or different frequency domain resources, so as to effectively improve throughput and reliability of uplink data transmission of the terminal.

Optionally, the network side device may indicate the first indication information through RRC signaling, where the RRC signaling is configured with at least one SRS resource set, where the at least one SRS resource set corresponds to the at least one target object one to one.

For example, the RRC signaling is configured with two SRS resource sets, which respectively correspond to two panels, or two SRS resource sets respectively correspond to two uplink TCI states. Alternatively, the SRS in the two SRS resource sets may be sent with two associated panels respectively, or sent with two TCI states respectively, and the physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) associated with the two SRS resource sets may also be sent with two panels associated with the two SRS resource sets respectively, or sent with two TCI states associated with the two SRS resource sets.

Optionally, the associated channel state information reference signals (Channel State Information Reference Signal, CSI-RS) in the SRS resource set are not configured at the same time as the shared beam (share common beam). Note that the same beam indicated by the network side device using MAC CE and/or DCI may be used for multiple channel transmission, and this beam is also referred to as common beam. The shared beam may refer to a shared common beam.

In an embodiment of the present application, in a case where the transmission mode associates at least two target objects, the method further includes:

and the terminal is switched to be associated with a target object for uplink data transmission.

For example, at least two target objects are associated with the SDM mode, and the terminal may switch to associate one target object for uplink data transmission. Therefore, the terminal can dynamically realize the switching of the transmission modes, and the flexibility of the terminal for uplink data transmission is effectively improved.

Optionally, the terminal switches to associate a target object for uplink data transmission, including at least one of the following:

the terminal receives DCI and switches to an associated target object for uplink data transmission based on the DCI, wherein the DCI is used for indicating the terminal to switch to the associated target object for uplink data transmission;

Under the condition that the terminal only has one TCI state to be effective, the terminal is switched to be associated with a target object to carry out uplink data transmission;

in the case that the transmission mode includes at least one of an SDM mode and an SFN mode, and DMRS ports indicated by uplink data transmission belong to the same code division multiplexing (Code Division Multiplexing, CDM) group, the terminal switches to associate one target object for uplink data transmission;

under the condition that an antenna port domain instructs a terminal to switch to a target object for uplink data transmission, the terminal switches to the target object for uplink data transmission based on the antenna port domain;

under the condition that two code words are configured in the transmission mode and only one code word is enabled, the terminal is switched to be associated with one target object for uplink data transmission;

and under the condition that the transmission mode comprises an SDM mode or an SFN mode and the number of transmission layers indicated by DCI received by the terminal meets the preset condition, the terminal is switched to be associated with one target object for uplink data transmission.

For example, in the first mode, the network side device sends DCI to the terminal, where the DCI includes an indication field for indicating the terminal to switch to the target object for uplink data transmission, and the terminal switches to the target object for uplink data transmission based on the DCI. Therefore, the terminal can realize dynamic switching of uplink data transmission based on the indication of the DCI, and flexibility of the uplink data transmission of the terminal is effectively improved.

In the second mode, if only one TCI state of the terminal is validated, the terminal switches to a target object for uplink data transmission. That is, the condition that one TCI state is validated corresponds to an indication that the terminal needs to switch to an associated target object for uplink data transmission. In this way, the terminal can realize flexible switching of uplink data transmission based on the effective condition of the TCI state of the terminal.

In the third mode, if the DMRS ports indicated by the uplink data transmission (e.g., PUSCH transmission) belong to the same CDM group for the SDM mode and/or SFN mode, it is indicated that the terminal may switch to the target object for uplink data transmission, and the terminal may switch the transmission mode, so that the terminal may implement flexible switching of uplink data transmission based on whether the DMRS ports belong to the same CDM group.

In the fourth aspect, if the antenna port domain instructs the DMRS port and simultaneously instructs to switch to the target object for uplink data transmission, the terminal switches to the target object for uplink data transmission based on the instruction of the antenna port domain. Illustratively, when DMRS Type (DMRS-Type) =1, maximum length (maxLength) =1, rank (rank) =3, the antenna port field is as shown in table 1 below:

TABLE 1 antenna Port Domain

As shown in table 1, when the value in the antenna port field is 0, the terminal is instructed to associate a plurality of target objects for uplink data transmission, and when the value in the antenna port field is 1, the terminal is instructed to associate one target object for uplink data transmission; if the value in the antenna port field received by the terminal is 1, that is, the terminal is instructed to switch to the associated target object for uplink data transmission, the terminal switches the transmission mode.

Alternatively, when DMRS Type (DMRS-Type) =1, maximum length (maxLength) =1, rank (rank) =4, the antenna port field is as shown in table 2 below:

TABLE 2 antenna Port Domain

As shown in table 2, when the value in the antenna port field is 0, the terminal is instructed to associate a plurality of target objects to perform uplink data transmission, and when the value in the antenna port field is 1, the terminal is instructed to associate one target object to perform uplink data transmission; if the value in the antenna port field received by the terminal is 1, that is, the terminal is instructed to switch to the associated target object for uplink data transmission, the terminal switches the transmission mode.

In the fifth mode, if the transmission mode indicated by the first indication information is a transmission mode configured with two codewords, for example, a second transmission mode in the SDM mode and a fifth transmission mode in the FDM mode, and if only one codeword in the two codewords is enabled, the terminal switches to a target object for uplink data transmission. Therefore, the terminal can realize flexible switching of uplink data transmission based on the enabling condition of the code word, so as to ensure the uplink transmission of the terminal.

In the sixth mode, for the SDM mode or the SFN mode, if the number of transmission layers indicated by the DCI satisfies a preset condition, the terminal switches to an associated one of the target objects to perform uplink data transmission. Wherein, the preset condition comprises any one of the following:

the number of transmission layers indicated by the target SRS resource indication (SRS resource indicator, SRI) domain is equal to a first preset value;

the number of transmission layers indicated by the target transmission precoding matrix indicator (Transmission Precoding matrix indicator, TPMI) field is equal to the first preset value;

the sum of the transmission layers indicated by the two SRI domains is larger than a second preset value;

the sum of the transmission layers indicated by the two TPMI fields is greater than the second preset value.

For example, if the first preset value is 3 and the number of transmission layers indicated by the target SRI field or the target TPMI field is equal to 3, the terminal switches to an associated target object to perform uplink data transmission.

For another example, the second preset value is 4, and when the sum of the transmission layers indicated by the two SRI fields is greater than 4, or the sum of the transmission layers indicated by the two TPMI fields is greater than 4, the terminal switches to associate one target object for uplink data transmission.

In this way, in the SDM mode, the terminal can determine whether to switch to a transmission mode associated with a target object based on the transmission layer number indicated by the SRI domain or the TPMI domain, thereby realizing flexible switching of uplink data transmission.

Optionally, in the case that the terminal determines to switch to the uplink data transmission associated with one target object, the transmission parameters of the uplink transmission are determined by at least one of the following:

SRS indicated by the first SRI domain;

the first TCI state in the currently effective TCI states, or the TCI state with the index smaller than the preset index, or the target TCI state indicated by DCI;

the SRS group indicated by the first SRI domain, or the TPMI indicated by the first TPMI domain;

a DMRS port with a determined transmission layer number indicated by a first SRI domain or TPMI domain;

the power control parameter associated with the first TCI state in the currently effective TCI states, or the power control parameter associated with the TCI state with the index smaller than the preset index, or the power control parameter associated with the target TCI state indicated by DCI;

a first Phase tracking reference signal-demodulation reference signal (Phase-tracking reference signal-Demodulation Reference Signal, PTRS-DMRS) association indicates a PTRS-DMRS association relationship indicated by the domain;

MCS indicated by the target modulation and coding scheme (Modulation and coding scheme, MCS) field, or RV indicated by the target redundancy version RV field, or NDI indicated by the target new data indication (New Date Indicator, NDI) field.

For example, the DCI includes a first indication field, where a value of 0 indicates that all uplink data transmissions use a first TCI state, and a value of 1 indicates that all uplink data transmissions use a second TCI state. When the terminal determines to switch to the target object for uplink data transmission, the transmission parameters of the uplink transmission of the terminal may be determined based on the value of the first indication field in the DCI, for example, when the value of the first indication field is 0, the transmission parameters of the uplink transmission of the terminal are determined based on the first TCI state.

As another example, the transmission parameters of the uplink transmission of the terminal are determined based on the PTRS-DMRS association relationship indicated by the first PTRS-DMRS association indication field, for example, the PTRS-DMRS association indication field includes 2 bits (bits), and for port (port) 0, the PTRS-DMRS association indication field is as follows in table 3:

TABLE 3 PTRS-DMRS association indication field

Value (Value)	DMRS port (DMRS port)
		0	The first planned DMRS port (1 ^st scheduled DMRS port)
1	The second planned DMRS port (2 ^nd scheduled DMRS port)
		2	Third planned DMRS port (3 ^rd scheduled DMRS port)
3	Fourth planned DMRS port (4) ^th scheduled DMRS port)

For port 0 and port 1, the ptrs-DMRS association indication field is shown in table 4 below:

TABLE 4 PTRS-DMRS association indication field

Optionally, in a case that the transmission parameter of the uplink transmission of the terminal is determined based on the MCS indicated by the target MCS field, or is determined based on the RV indicated by the target RV field, or is determined based on the NDI indicated by the target NDI field, at least one of the target MCS field, the RV field, and the NDI field is associated with a target Transport Block (TB), and the target TB is determined based on at least one of:

A first TB;

DCI indication.

For example, when the uplink transmission mode of the terminal is associated with only one target object, only one codeword is enabled, the MCS corresponding to the enabled codeword is indicated by the MCS field of the first TB, or the RV corresponding to the enabled codeword is indicated by the RV field of the first TB, or the NDI corresponding to the enabled codeword is indicated by the NDI field of the first TB.

Or, the DCI received by the terminal includes a second indication field, where a value of 0 of the second indication field identifies that the target TB is the first TB, and a value of 1 indicates that the target TB is the second TB, and the terminal can determine the target TB based on the indication of the DCI.

In an embodiment of the present application, the transmission mode is determined by at least one of:

RRC signaling;

DCI；

MAC CE；

the number of transmission layers indicated by the first indication information;

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

and the repeated transmission times indicated by the first indication information.

Optionally, in the case that the transmission mode is indicated by DCI, the DCI indicates the transmission mode based on at least one of:

an indication field included in the DCI;

an antenna port field in the DCI, where the antenna port field is further configured to indicate a DMRS port;

And the time domain resource allocation domain in the DCI.

For example, when dmrs-type=1, maxlength=1, rank=2, the antenna port field indication is as shown in table 5 below:

TABLE 5 antenna Port Domain

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Transmission mode
				0	1	0,1	FDM
1	2	0,1	FDM
				2	2	2,3	FDM
3	2	0,2	SDM
				4	1	0,1	SFN
5	2	0,1	SFN
				6	2	2,3	SFN
7	Reserved	Reserved	Reserved

Alternatively, when dmrs-type=1, maxlength=1, rank=3, the antenna port field indication is as shown in table 6 below:

TABLE 6 antenna Port Domain

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Transmission mode
				0	2	0-2	SDM
1	2	0-2	SFN
				2	2	0-2	FDM
3-7	Reserved	Reserved	Reserved

Alternatively, when dmrs-type=1, maxlength=1, rank=4, the antenna port field indication is as shown in table 7 below:

TABLE 7 antenna Port Domain

Value	Number of DMRS CDM group(s)without data	DMRS port(s)	Transmission mode
				0	2	0-3	SDM
1	2	0-3	SFN
				2	2	0-3	FDM
3-7	Reserved	Reserved	Reserved

As shown in tables 5 to 7, the terminal can determine the transmission mode of uplink data based on the antenna port region indicated in the DCI.

Alternatively, the transmission mode may be determined based on the repetition number indicated by the first indication information, for example, when the repetition number (repetition) is greater than 1, the transmission mode is a TDM mode; or, the transmission mode may be determined based on the DMRS port indicated by the first indication information, for example, when the indicated DMRS port belongs to the same CDM group, the transmission mode is an FDM mode or an SFN mode; or, the transmission mode may be determined based on the transmission layer number indicated by the first indication information, for example, when the indicated transmission layer number is greater than 4, the transmission mode is indicated to be an FDM mode. Illustratively, the case of determining the transmission mode based on the first indication information may be as follows in table 8:

TABLE 8 determination of transmission modes

Optionally, the transmission mode may be indicated in an explicit and implicit manner based on the network side device, for example, the RRC signaling indicates that the transmission mode of the uplink data of the terminal is an SFN mode or an FDM mode, and when the DMRS ports indicated by the first indication information belong to the same CDM group, the transmission mode of the uplink data of the terminal is the SFN mode or the FDM mode.

In the embodiment of the application, a scheme for dynamically determining the uplink data transmission mode of a terminal is provided, and the uplink data transmission mode of the terminal is dynamically indicated based on first indication information; and the terminal can select one of the SDM mode, the FDM mode, the SFN mode and the TDM mode to carry out uplink data transmission, so that the uplink data transmission of the terminal is not limited to a single fixed transmission mode, and the flexibility and the diversity of the uplink data transmission of the terminal are effectively improved.

Referring to fig. 3, fig. 3 is a flowchart of another transmission mode determining method according to an embodiment of the present application, where the method is applied to a network side device. As shown in fig. 3, the method comprises the steps of:

step 301, the network side device sends first indication information to the terminal, where the first indication information is used to indicate a transmission mode of uplink data transmission by the terminal.

Wherein the transmission mode includes at least one of:

an SDM mode;

an FDM mode;

SFN mode;

TDM mode.

Optionally, the first indication information may be explicitly indicated by the network side device through signaling; for example, the first indication information may be RRC signaling sent by the network side device; or, the first indication information may also be DCI sent by the network side device; or, the first indication information may also be MAC CE signaling sent by the network side device; or, the first indication information may also be an indication implicitly performed by the network side device through signaling.

Optionally, the first indication information is used for indicating a transmission mode of uplink data transmission of the terminal. For example, the network side device instructs the terminal to perform at least one transmission mode of uplink data transmission through RRC signaling; or, the network side equipment indicates at least one transmission mode through an indication domain contained in the DCI; or, the network side device instructs the terminal to perform the transmission mode of uplink data transmission by indicating the DMRS, and so on, which is not excessively listed in this embodiment.

In the embodiment of the application, the network side equipment dynamically indicates the transmission mode of the terminal for the uplink data through the first indication information, so that the uplink data transmission of the terminal is not limited to a fixed transmission mode any more; in addition, the transmission mode includes at least one of an SDM mode, an FDM mode, an SFN mode and a TDM mode, and then the terminal can select one of the at least one transmission mode to perform uplink data transmission, so that the uplink data transmission of the terminal is not limited to a single fixed transmission mode, and the flexibility and diversity of the uplink data transmission of the terminal are further improved.

Optionally, the transmission mode is associated with at least one target object, and the target object is parameter information related to uplink data transmission.

The possible forms of the target object may be specifically described in the embodiment described above with reference to fig. 2, which is not described in detail in this embodiment. Any of the above transmission modes may be associated with at least one target object, and the target object associated with each transmission mode may be different.

Optionally, in a case where the RRC signaling is configured with at least one SRS resource set, the at least one SRS resource set corresponds to the at least one target object one-to-one. For example, the RRC signaling is configured with two SRS resource sets, which respectively correspond to two panels, or two SRS resource sets respectively correspond to two uplink TCI states. Alternatively, the SRS in the two SRS resource sets may be sent with two associated panels respectively, or sent with two TCI states respectively, and the PUSCH associated with the two SRS resource sets may also be sent with two panels associated with the two SRS resource sets respectively, or sent with two TCI states associated with the two SRS resource sets.

Optionally, the CSI-RS associated in the SRS resource set is not configured with the shared beam.

In the embodiment of the application, the SDM mode comprises a first transmission mode and a second transmission mode, wherein the first transmission mode correspondingly transmits one codeword, and the second transmission mode correspondingly transmits two codewords;

the FDM mode comprises a third transmission mode, a fourth transmission mode and a fifth transmission mode, wherein the third transmission mode corresponds to one redundancy version of one codeword, the fourth transmission mode corresponds to two redundancy versions of one codeword, and the fifth transmission mode corresponds to two codewords;

Optionally, the above transmission mode is indicated by at least one of:

RRC signaling;

DCI；

a medium access control element (MAC CE);

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

An indication field included in the DCI;

and the time domain resource allocation domain in the DCI.

It should be noted that, the transmission mode determining method provided in the embodiment of the present application is applied to the network side device, and corresponds to the transmission mode determining method applied to the terminal side in fig. 2, and the related concept and the specific flow involved in the embodiment of the present application may be described in the embodiment described with reference to fig. 2, which is not repeated in this embodiment.

According to the transmission mode determining method provided by the embodiment of the application, the execution main body can be the transmission mode determining device. In the embodiment of the present application, a transmission mode determining device executes a transmission mode determining method as an example, and the transmission mode determining device provided in the embodiment of the present application is described.

Referring to fig. 4, fig. 4 is a block diagram of a transmission mode determining apparatus according to an embodiment of the present application. As shown in fig. 4, the transmission mode determining apparatus 400 includes:

a receiving module 401, configured to receive first indication information;

a determining module 402, configured to determine a transmission mode of uplink data based on the first indication information, where the transmission mode includes at least one of:

A space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

Optionally, in a case where the RRC signaling is configured with at least one SRS resource set, the at least one SRS resource set corresponds to the at least one target object one-to-one.

Optionally, the channel state information reference signals CSI-RS associated in the SRS resource set are configured different from the shared beam.

Optionally, the SDM mode includes a first transmission mode and a second transmission mode, where the first transmission mode corresponds to transmitting one codeword, and the second transmission mode corresponds to transmitting two codewords;

the FDM mode includes a third transmission mode, a fourth transmission mode, and a fifth transmission mode, where the third transmission mode corresponds to transmitting one redundancy version of one codeword, the fourth transmission mode corresponds to transmitting two redundancy versions of one codeword, and the fifth transmission mode corresponds to transmitting two codewords.

Optionally, the transmission mode associates at least two target objects, and the apparatus further includes:

And the switching module is used for switching to the associated target object to perform uplink data transmission.

Optionally, the switching module is configured to perform at least one of:

receiving Downlink Control Information (DCI), and switching to be associated with one target object for uplink data transmission based on the DCI, wherein the DCI is used for indicating the device to be switched to be associated with one target object for uplink data transmission;

switching to a target object to be associated for uplink data transmission under the condition that the device only has one transmission configuration indication TCI state to be effective;

when the transmission mode comprises at least one of an SDM mode and an SFN mode, and demodulation reference signal (DMRS) ports indicated by uplink data transmission belong to the same Code Division Multiplexing (CDM) group, switching to one associated target object for uplink data transmission;

indicating the device to switch to be associated with one target object for uplink data transmission in an antenna port domain, and switching to be associated with one target object for uplink data transmission based on the antenna port domain;

under the condition that two code words are configured in the transmission mode and only one code word is enabled, switching to a target object for uplink data transmission;

And when the transmission mode comprises an SDM mode or an SFN mode and the number of transmission layers indicated by DCI received by the device meets a preset condition, switching to a target object for uplink data transmission.

Optionally, the preset condition includes any one of the following:

the number of transmission layers indicated by the target SRI domain is equal to a first preset value;

the transmission layer number indicated by the target TPMI domain is equal to the first preset value;

Optionally, in the case that the apparatus determines to switch to the uplink data transmission associated with one target object, the transmission parameters of the uplink transmission are determined by at least one of the following:

SRS indicated by the first SRI domain;

A PTRS-DMRS association relation indicated by a first PTRS-DMRS association indication field;

MCS indicated by the target MCS field, or RV indicated by the target RV field, or NDI indicated by the target NDI field.

Optionally, at least one of the target MCS field, the RV field, and the NDI field is associated with a target TB, the target TB being determined based on at least one of:

a first TB;

DCI indication.

Optionally, the transmission mode is determined by at least one of:

RRC signaling;

DCI；

a medium access control element (MAC CE);

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

the repetition number indicated by the first indication information.

an indication field included in the DCI;

and the time domain resource allocation domain in the DCI.

In the embodiment of the application, the device determines the transmission mode of the uplink data based on the received first indication information, so that the uplink data transmission mode of the device can be dynamically indicated, and the uplink data transmission of the device is not limited to a fixed transmission mode. And the transmission mode comprises at least one of SDM mode, FDM mode, SFN mode and TDM mode, so that the device can select one of at least one transmission mode to carry out uplink data transmission, the uplink data transmission of the device is not limited to a single fixed transmission mode, and the flexibility and diversity of the uplink data transmission of the device are further improved.

The transmission mode determining device in the embodiment of the application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The transmission mode determining device provided by the embodiment of the present application can implement each process implemented by the terminal in the embodiment of the method of fig. 2, and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

Referring to fig. 5, fig. 5 is a block diagram of a transmission mode determining apparatus according to an embodiment of the present application. As shown in fig. 5, the transmission mode determining apparatus 500 includes:

a sending module 501, configured to send first indication information to a terminal, where the first indication information is used to indicate a transmission mode of uplink data transmission by the terminal;

wherein the transmission mode includes at least one of:

a space division multiplexing SDM mode;

A frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

Optionally, the transmission mode is indicated by at least one of:

RRC signaling;

DCI；

a medium access control element (MAC CE);

The DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

an indication field included in the DCI;

and the time domain resource allocation domain in the DCI.

In the embodiment of the application, the device dynamically indicates the transmission mode of the terminal for the uplink data through the first indication information, so that the uplink data transmission of the terminal is not limited to a fixed transmission mode; in addition, the transmission mode includes at least one of an SDM mode, an FDM mode, an SFN mode and a TDM mode, and then the terminal can select one of the at least one transmission mode to perform uplink data transmission, so that the uplink data transmission of the terminal is not limited to a single fixed transmission mode, and the flexibility and diversity of the uplink data transmission of the terminal are further improved.

The transmission mode determining device provided by the embodiment of the present application can implement each process implemented by the network side device in the embodiment of the method of fig. 3, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 6, the embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, where the memory 602 stores a program or instructions executable on the processor 601, for example, when the communication device 600 is a terminal, the program or instructions implement the steps of the above-mentioned transmission mode determining method embodiment when executed by the processor 601, and achieve the same technical effects. When the communication device 600 is a network side device, the program or the instruction, when executed by the processor 601, implements the steps of the above-described transmission mode determining method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving the first indication information; the processor is configured to determine a transmission mode of uplink data based on the first indication information, where the transmission mode includes at least one of: SDM mode, FDM mode, SFN mode, and TDM mode. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 700 includes, but is not limited to: at least some of the components of the radio frequency unit 701, the network module 702, the audio output unit 703, the input unit 704, the sensor 705, the display unit 706, the user input unit 707, the interface unit 708, the memory 709, and the processor 710.

Those skilled in the art will appreciate that the terminal 700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 710 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 701 may transmit the downlink data to the processor 710 for processing; in addition, the radio frequency unit 701 may send uplink data to the network side device. Typically, the radio unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 709 may include volatile memory or nonvolatile memory, or the memory 709 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 709 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 710.

The radio frequency unit 701 is configured to receive first indication information;

a processor 710, configured to determine a transmission mode of uplink data based on the first indication information, where the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

Optionally, the transmission mode is associated with at least two target objects, and the processor 710 is further configured to:

and switching to one associated target object for uplink data transmission.

Optionally, the processor 710 is configured to perform at least one of:

receiving DCI, and performing uplink data transmission based on the DCI in a switching mode and associated with one target object, wherein the DCI is used for indicating the terminal to switch to a transmission mode associated with one target object;

switching to a target object to perform uplink data transmission under the condition that the terminal has only one transmission configuration indication TCI state to be effective;

when the transmission mode comprises at least one of an SDM mode and an SFN mode, and the DMRS ports indicated by uplink data transmission belong to the same CDM group, switching to one target object for uplink data transmission;

Under the condition that an antenna port domain instructs a terminal to switch to a target object for uplink data transmission, switching to the target object for uplink data transmission based on the antenna port domain;

and when the transmission mode comprises an SDM mode or an SFN mode and the number of transmission layers indicated by DCI received by the terminal meets a preset condition, switching to a target object for uplink data transmission.

Optionally, the preset condition includes any one of the following:

the transmission layer number indicated by the SRI domain indicated by the target SRS resource is equal to a first preset value;

the transmission layer number indicated by the target Transmission Precoding Matrix Indicator (TPMI) domain is equal to the first preset value;

SRS indicated by the first SRI domain;

a first phase tracking reference signal-demodulation reference signal PTRS-DMRS association relationship indicated by a PTRS-DMRS association indication field;

MCS indicated by the target modulation and coding scheme MCS field, or RV indicated by the target redundancy version RV field, or NDI indicated by the NDI field, is indicated by the target new data.

Optionally, at least one of the target MCS field, the RV field, and the NDI field is associated with a target transport block, TB, the target TB being determined based on at least one of:

a first TB;

DCI indication.

Optionally, the transmission mode is determined by at least one of:

RRC signaling;

DCI；

a medium access control element (MAC CE);

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

the repetition number indicated by the first indication information.

an indication field included in the DCI;

and the time domain resource allocation domain in the DCI.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending first indication information to the terminal, and the first indication information is used for indicating a transmission mode of uplink data transmission of the terminal; wherein the transmission mode includes at least one of: SDM mode, FDM mode, SFN mode, TDM mode. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 8, the network side device 800 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84 and a memory 85. The antenna 81 is connected to a radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information via the antenna 81, and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes information to be transmitted, and transmits the processed information to the radio frequency device 82, and the radio frequency device 82 processes the received information and transmits the processed information through the antenna 81.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 83, and the baseband apparatus 83 includes a baseband processor.

The baseband device 83 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 8, where one chip, for example, a baseband processor, is connected to the memory 85 through a bus interface, so as to call a program in the memory 85 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 86, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 800 of the embodiment of the present application further includes: instructions or programs stored in the memory 85 and executable on the processor 84, the processor 84 invokes the instructions or programs in the memory 85 to perform the method performed by the modules shown in fig. 5, and achieve the same technical effects, and are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, where the program or the instruction implements each process of the embodiment of the method as described in the foregoing embodiment 2, or implements each process of the embodiment of the method as described in the foregoing embodiment 3, and the same technical effects can be achieved, and in order to avoid repetition, a description is omitted here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction, implement each process of the embodiment of the method as described in the foregoing 2, or implement each process of the embodiment of the method as described in the foregoing 3, and achieve the same technical effect, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the embodiment of the method as described in the foregoing embodiment 2, or implement each process of the embodiment of the method as described in the foregoing embodiment 3, and achieve the same technical effects, so that repetition is avoided and a detailed description is omitted herein.

The embodiment of the application also provides a communication system, which comprises: a terminal and a network side device, the terminal may be configured to perform the steps of the transmission mode determining method described in fig. 2, and the network side device may be configured to perform the steps of the transmission mode determining method described in fig. 3.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A transmission mode determination method, comprising:

the terminal receives first indication information;

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

2. The method of claim 1, wherein the transmission mode is associated with at least one target object, the target object being parameter information related to uplink data transmission.

3. The method of claim 2, wherein the at least one SRS resource set corresponds one-to-one with the at least one target object in the case where radio resource control, RRC, signaling is configured with the at least one SRS resource set.

4. The method of claim 3, wherein the associated channel state information reference signals, CSI-RS, in the SRS resource set are configured not concurrently with a shared beam.

5. The method of claim 1, wherein the SDM mode comprises a first transmission mode and a second transmission mode, the first transmission mode corresponding to transmitting one codeword and the second transmission mode corresponding to transmitting two codewords;

6. The method of claim 1, wherein the transmission mode associates at least two target objects, the method further comprising:

7. The method of claim 6, wherein the terminal switching to associate a target object for uplink data transmission comprises at least one of:

the terminal receives Downlink Control Information (DCI), and switches to be associated with one target object for uplink data transmission based on the DCI, wherein the DCI is used for indicating the terminal to switch to be associated with one target object for uplink data transmission;

under the condition that the terminal only has one transmission configuration indication TCI state to be effective, the terminal is switched to be associated with a target object to carry out uplink data transmission;

in the case that the transmission mode includes at least one of an SDM mode and an SFN mode, and demodulation reference signal DMRS ports indicated by uplink data transmission belong to the same code division multiplexing CDM group, the terminal switches to an associated target object to perform uplink data transmission;

8. The method of claim 7, wherein the preset conditions include any one of:

9. The method according to claim 6, wherein in case the terminal determines to switch to an associated one of the target objects for uplink data transmission, the transmission parameters of the uplink transmission are determined by at least one of:

SRS indicated by the first SRI domain;

10. The method of claim 9, wherein at least one of the target MCS field, the RV field, and the NDI field is associated with a target transport block, TB, the target TB being determined based on at least one of:

a first TB;

DCI indication.

11. The method of claim 1, wherein the transmission mode is determined by at least one of:

RRC signaling;

DCI；

a medium access control element (MAC CE);

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

the repetition number indicated by the first indication information.

12. The method of claim 11, wherein, in the case where the transmission mode is indicated by DCI, the DCI indicates the transmission mode based on at least one of:

an indication field included in the DCI;

and the time domain resource allocation domain in the DCI.

13. A transmission mode determination method, comprising:

wherein the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

14. The method of claim 13, wherein the transmission mode is associated with at least one target object, the target object being parameter information related to uplink data transmission.

15. The method of claim 14, wherein the at least one SRS resource set corresponds one-to-one with the at least one target object in the case where radio resource control, RRC, signaling is configured with the at least one SRS resource set.

16. The method of claim 15, wherein the associated channel state information reference signals, CSI-RS, in the SRS resource set are configured not concurrently with a shared beam.

17. The method of claim 13, wherein the SDM mode comprises a first transmission mode and a second transmission mode, the first transmission mode corresponding to transmitting one codeword and the second transmission mode corresponding to transmitting two codewords;

18. The method of claim 13, wherein the transmission mode is indicated by at least one of:

RRC signaling;

DCI；

A medium access control element (MAC CE);

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

19. The method of claim 18, wherein the DCI indicates the transmission mode based on at least one of:

an indication field included in the DCI;

and the time domain resource allocation domain in the DCI.

20. A transmission mode determining apparatus, comprising:

the receiving module is used for receiving the first indication information;

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

21. The apparatus of claim 20, wherein the transmission mode associates at least two target objects, the apparatus further comprising:

22. The apparatus of claim 21, wherein the switching module is configured to perform at least one of:

23. The apparatus of claim 22, wherein the preset condition comprises any one of:

24. The apparatus of claim 21, wherein the transmission parameters of the uplink transmission are determined by at least one of the following in the case where the apparatus determines to switch to the uplink data transmission associated with one of the target objects:

SRS indicated by the first SRI domain;

25. A transmission mode determining apparatus, comprising:

wherein the transmission mode includes at least one of:

a space division multiplexing SDM mode;

a frequency division multiplexing FDM mode;

a single frequency network SFN mode;

time division multiplexing TDM mode.

26. The apparatus of claim 25, wherein the transmission mode is associated with at least one target object, the target object being parameter information related to uplink data transmission.

27. The apparatus of claim 25, wherein the transmission mode is indicated by at least one of:

RRC signaling;

DCI；

a medium access control element (MAC CE);

the DMRS port indicated by the first indication information;

the number of codewords enabled by the first indication information;

28. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the transmission mode determination method according to any one of claims 1-12.

29. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the transmission mode determination method of any one of claims 13-19.

30. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the transmission mode determination method according to any one of claims 1 to 12 or the steps of the transmission mode determination method according to any one of claims 13 to 19.