WO2022000143A1

WO2022000143A1 - Data transmission method and apparatus, and storage medium

Info

Publication number: WO2022000143A1
Application number: PCT/CN2020/098621
Authority: WO
Inventors: 朱亚军
Original assignee: 北京小米移动软件有限公司
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2022-01-06
Also published as: CN111919415A; CN111919415B

Abstract

The present application provides a data transmission method and apparatus, and a storage medium. The method of the present application is applied to a network device, comprising: determining demodulation reference signal (DMRS) configuration information, the DMRS configuration information being used for characterizing the DMRS time domain position; and sending the DMRS configuration information. The method of the present application achieves the enhancement of the network coverage performance.

Description

Data transmission method and device, storage medium

technical field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a data transmission method and device, and a storage medium.

Background technique

The continuous emergence of new Internet applications such as a new generation of Augment Reality (AR), Virtual Reality (VR), and Vehicle to Vehicle (V2V) communication has put forward higher requirements for wireless communication technology. This drives the continuous evolution of wireless communication technology to meet application demands. At present, the cellular mobile communication technology is in the evolution stage of a new generation technology. An important feature of the new generation technology is to support flexible configuration of multiple business types. Different service types have different requirements for wireless communication technology. For example, the requirements of the enhanced Mobile Broad Band (eMBB) service type focus on aspects such as large bandwidth and high speed. The ultra-reliable and low-latency communication (Ultra Reliable Low Latency Communication, URLLC) service type requirements focus on high reliability and low latency. Massive Machine Type Communication (mMTC) service type requirements focus on a large number of connections. Therefore, the new generation of wireless communication system needs a flexible and configurable design to support the transmission of various service types.

For the cellular mobile communication system, the coverage performance of the network is very important. This directly affects the operator's network deployment. In the case of dense network deployment, the coverage performance of the network will be better, but it will increase the cost of the operator. In the case of sparse network deployment, the coverage performance of the network is relatively poor.

In order to improve the coverage performance of the network, in the related art, the repeated transmission mode is used to enhance the coverage performance of the network. For example, the performance of uplink coverage is improved through repeated transmission in the time domain. However, the method of repeated transmission in the time domain will result in a low utilization rate of spectrum resources and additional delay. The related art also points out that the demodulation reference signal (Demodulation Reference) transmitted between different time slots (slots) or the same user's Physical Uplink Shared Channel (PUSCH) within the same time slot Signal, DMRS) to perform joint channel estimation (Joint Channel Estimation) to improve the accuracy of channel estimation, thereby improving the coverage performance of the network. However, in the current DMRS design, the configuration of the DMRS is fixed and therefore cannot be changed dynamically, which makes joint channel estimation impossible for the transmission of different DMRSs.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the related art, the embodiments of the present disclosure provide a data transmission method and device, and a storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a data transmission method, which is applied to a network device. The data transmission method includes: determining demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a signal used to indicate the DMRS. The parameters of the time domain location; send the DMRS configuration information.

In an embodiment, the DMRS configuration information at least includes at least one DMRS configuration used to indicate the time domain position of the DMRS, and each DMRS configuration in the at least one DMRS configuration is used to indicate n DMRS time domain positions; Among them, n is a positive integer greater than or equal to 0.

In another embodiment, the DMRS configuration information is a bit sequence, and the bit sequence includes bits used to indicate the at least one DMRS configuration.

In another embodiment, the sending the DMRS configuration information includes: sending the DMRS configuration information through a first scheduling instruction, wherein the DMRS configuration information is carried in a first information field of the first scheduling instruction, and the The first information field includes at least a bit value used to indicate a DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In another implementation manner, the position of the first information field in the first scheduling instruction is fixed or configurable.

In yet another embodiment, the data transmission method further includes: sending first information, where the first information is used to indicate activation of dynamic adjustment of the DMRS configuration information, or to indicate inactivation of dynamic adjustment of the DMRS configuration information .

In another embodiment, the data transmission method further includes: sending second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

In another implementation manner, the sending the second information includes: sending the second information through a second information field in the second scheduling instruction.

In yet another embodiment, the second information field includes at least a first identifier, and the first identifier is used to indicate that each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction The DMRSs correspond to different DMRS sequences.

In yet another embodiment, the second information field includes at least a first identifier, and the first identifier is used to indicate that each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction The DMRS correspond to the same DMRS sequence.

In another embodiment, the sending the DMRS configuration information includes: sending the DMRS configuration information through higher layer signaling or physical layer signaling.

In another embodiment, different terminals correspond to different DMRS configuration information.

According to a second aspect of the embodiments of the present disclosure, there is provided a method applied to a terminal. The data transmission method includes: receiving demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a parameter used to indicate a time domain position of the DMRS .

In another embodiment, the receiving DMRS configuration information includes: receiving the DMRS configuration information through a first scheduling instruction, wherein the DMRS configuration information is carried in a first information field of the first scheduling instruction, and the The first information field includes at least a bit value used to indicate a DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In yet another embodiment, the data transmission method further includes: receiving first information, where the first information is used to indicate activation of dynamic adjustment of the DMRS configuration information, or to indicate inactivation of dynamic adjustment of the DMRS configuration information .

In another embodiment, the data transmission method further includes: receiving second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

In another implementation manner, the receiving the second information includes: receiving the second information through a second information field in the second scheduling instruction.

In another embodiment, the data transmission method further includes: performing joint channel estimation based on the same DMRS sequence.

In another embodiment, the receiving the DMRS configuration information includes: receiving the DMRS configuration information through higher layer signaling or physical layer signaling.

According to a third aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, which is applied to a network device, the data transmission apparatus comprising: a determination unit configured to determine demodulation reference signal DMRS configuration information, where the DMRS configuration information at least Including a parameter for indicating the time domain position of the DMRS; the sending unit is configured to send the DMRS configuration information.

In another embodiment, the sending unit is further configured to: send the DMRS configuration information through a first scheduling instruction, wherein the DMRS configuration information is carried in the first information field of the first scheduling instruction, and the The first information field includes at least a bit value used to indicate a DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In yet another embodiment, the sending unit is further configured to: send first information, where the first information is used to indicate activation of dynamic adjustment of the DMRS configuration information, or to indicate inactivation of dynamic adjustment of the DMRS configuration information.

In another embodiment, the sending unit is further configured to send second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

In another implementation manner, the sending unit is further configured to send the second information through the second information field in the second scheduling instruction.

In another implementation manner, the sending unit is further configured to: send the DMRS configuration information through higher layer signaling or physical layer signaling.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, characterized in that, when applied to a terminal, the data transmission apparatus includes: a receiving unit configured to receive demodulation reference signal DMRS configuration information, the DMRS The configuration information includes at least parameters for indicating the time domain location of the DMRS.

In yet another embodiment, the receiving unit is further configured to: receive the DMRS configuration information through a first scheduling instruction, wherein the DMRS configuration information is carried in the first information field of the first scheduling instruction, and the The first information field includes at least a bit value used to indicate a DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In yet another embodiment, the receiving unit is further configured to: receive first information, where the first information is used to indicate activation of dynamic adjustment of the DMRS configuration information, or to indicate inactivation of dynamic adjustment of the DMRS configuration information.

In another embodiment, the receiving unit is further configured to: receive second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

In another implementation manner, the receiving unit is further configured to: receive the second information based on the second information field in the second scheduling instruction.

In yet another embodiment, the data transmission apparatus further includes: a processing unit configured to perform joint channel estimation based on the same DMRS sequence.

In another implementation manner, the receiving unit is further configured to receive the DMRS configuration information through higher layer signaling or physical layer signaling.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, applied to a network device, comprising: a processor; and a memory for storing instructions executable by the processor, wherein the processor is configured to execute the aforementioned first On the one hand, a data transmission method provided by any technical solution.

According to a sixth aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided, when the instructions in the storage medium are executed by a processor of a network device, the network device can execute any technique of the foregoing first aspect The data transfer method provided by the program.

According to a seventh aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus applied to a terminal, comprising: a processor; and a memory for storing instructions executable by the processor, wherein the processor is configured to: execute the foregoing first step. In the second aspect, the data transmission method provided by any technical solution.

According to an eighth aspect of the embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided. When an instruction in the storage medium is executed by a processor of a terminal, the terminal can execute any technical solution of the second aspect. data transfer method.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: determining demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes parameters used to indicate the time domain location of the DMRS; and sending the DMRS configuration information. This enables the time domain position of the DMRS to be dynamically adjusted in the case of limited network coverage or any appropriate situation, thereby effectively improving the coverage performance of the network.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

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

FIG. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.

Fig. 2 is a schematic diagram of repeated transmission according to an exemplary embodiment.

Fig. 3 is a schematic diagram showing a joint channel estimation according to an exemplary embodiment.

Fig. 4 is a flowchart of a data transmission method according to an exemplary embodiment.

Fig. 5 is a schematic diagram showing a DMRS configuration according to an exemplary embodiment.

Fig. 6 is a flowchart of a data transmission method according to an exemplary embodiment.

Fig. 7 is a flowchart showing a data transmission method according to an exemplary embodiment.

Fig. 8 is a flowchart of a data transmission method according to an exemplary embodiment.

Fig. 9 is a flowchart showing a data transmission method according to an exemplary embodiment.

Fig. 10 is a flowchart showing a data transmission method according to an exemplary embodiment.

Fig. 11 is a block diagram of a data transmission apparatus according to an exemplary embodiment.

Fig. 12 is a block diagram of a data transmission apparatus according to an exemplary embodiment.

Fig. 13 is a block diagram of a data transmission apparatus according to an exemplary embodiment.

Fig. 14 is a block diagram of an apparatus for data transmission according to an exemplary embodiment.

Fig. 15 is a block diagram of an apparatus for data transmission according to an exemplary embodiment.

detailed description

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as recited in the appended claims.

The data transmission method provided by the embodiments of the present disclosure can be applied to the wireless communication system shown in FIG. 1 . Referring to FIG. 1, the wireless communication system includes a network device and a terminal. The terminal is connected to the network device through wireless resources, and performs data transmission.

It can be understood that the wireless communication system shown in FIG. 1 is only a schematic illustration. The wireless communication system may further include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, etc., which are not shown in FIG. 1 . The embodiments of the present disclosure do not limit the number of network devices and the number of terminals included in the wireless communication system.

It can be further understood that the wireless communication system according to the embodiment of the present disclosure is a network providing a wireless communication function. Wireless communication systems can use different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA) , Frequency Division Multiple Access (Frequency Division Multiple Access, FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency-Division Multiple Access, OFDMA), Single Carrier Frequency Division Multiple Access (Single Carrier FDMA, SC-FDMA), carrier sense Multiple access/collision avoidance (Carrier Sense Multiple Access with Collision Avoidance, CSMA/CA). According to the capacity, speed, delay and other factors of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, 5G network can also be called a new wireless network ( New Radio, NR). For convenience of description, the present disclosure will sometimes refer to a wireless communication network simply as a network.

Further, the network devices involved in the present disclosure may also be referred to as radio access network devices. The wireless access network equipment may be: a base station, an evolved NodeB (eNodeB or eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless medium The relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (Transmission and Reception Point, TRP), etc., can also be a base station (gNodeB or gNB) in the NR system, or can also be composed of A component or part of equipment of a base station, etc. It should be understood that, in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited. In the present disclosure, a network device may provide communication coverage for a specific geographic area, and may communicate with terminals located within that coverage area (cell). In addition, when it is a vehicle-to-everything (V2X) communication system, the network device may also be an in-vehicle device.

Further, the terminal involved in the present disclosure may also be referred to as terminal equipment, user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), etc. A device that provides voice and/or data connectivity, for example, a terminal may be a handheld device with wireless connectivity, a vehicle-mounted device, or the like. At present, some examples of terminals are: Smartphone (Mobile Phone), Pocket Personal Computer (PPC), PDA, Personal Digital Assistant (PDA), notebook computer, tablet computer, wearable device, or Vehicle equipment, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be an in-vehicle device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

Pilots play an important role in wireless communication systems, for example, they can be used for channel detection or physical channel demodulation. For example, transmission between wireless devices is often affected by noisy channel conditions and interference. In this case, pilots may be inserted into transmissions between wireless devices to aid in coherent channel estimation. Pilots are known signals that receivers can use to perform channel estimation to help decode received messages. For example, the demodulation reference signal DMRS can be used for channel estimation in the communication between the user equipment and the base station. Based on the channel estimation, the attenuation of the channel to the wireless signal sent by the base station can be determined. The user equipment obtains the signal strength threshold according to the attenuation of the wireless signal, thereby assisting the user equipment in demodulating the data delivered by the base station. For example, the DMRS may be multiplexed with data in messages from the transmitter to the receiver, thereby helping the receiver to estimate channel quality, which in turn may be used by the receiver to assist in the demodulation and decoding of received messages.

In the development process of the wireless communication system, for the unlicensed spectrum, the 3GPP proposed to use the unlicensed frequency band through the LAA (License Assisted Access, License Assisted Access) mechanism. That is, the use of unlicensed frequency bands is assisted by licensed frequency bands. In order to ensure the coexistence with other systems such as WiFi on the unlicensed frequency band, the LBT (Listen Before Talk) mechanism is also introduced into the LAA. The sender needs to detect whether the channel is idle when there is data to be sent. The sender can send data only after the channel is in an idle state.

In a wireless communication system, the generation of the DMRS sequence is bound to the identification of the time domain unit. For example, the initialization method for the generation of the DMRS sequence for PDSCH (Physical Downlink Shared Channel, physical downlink shared channel) is:

Among them, c _init is the initial value of the DMRS sequence;

is the number of symbols included in a slot;

is the number of time slots included in a radio frame in the case of the subcarrier spacing configuration μ; l is the sequence number of symbols in a time slot,

is the cell ID (Identification, ID) of the serving cell, and n _SCID is an offset value.

In order to improve the coverage performance of the network, the repeated transmission method is used to enhance the coverage performance of the network. For example, the method shown in FIG. 2 adopts the method of repeated transmission in the time domain, thereby providing the performance of uplink coverage. Machine-Type Communication (MTC) and Narrow Band Internet of Things (NB-IoT) are typical representatives of cellular IoT technologies and have been widely used in smart cities (such as meter reading), Smart agriculture, (such as the collection of information such as temperature and humidity) and smart transportation (such as shared bicycles) and many other fields. Because most terminals in MTC and NB-IoT are deployed in basements and other areas where wireless signal propagation is limited, and due to the limitations of hardware capabilities of terminals, their coverage is not as good as traditional Long Term Evolution (LTE) networks. Therefore, repeated transmission is used in MTC and NB-IoT to accumulate power, thereby achieving the effect of coverage enhancement. In simple terms, repeated transmission is the transmission of the same transmission over multiple time units. This time unit may be one subframe or multiple subframes.

Since the channel status of the terminal may change, and the channel status (for example, the channel status may be reported by the terminal) on which the base station configures the number of repeated transmissions of uplink data for the terminal may be inaccurate, it may occur that the base station configures the user Excessive number of repeated transmissions. The terminal transmits according to the number of repeated transmissions configured by the base station, resulting in too many repeated transmissions and waste of channel resources and terminal power. Therefore, the method of repeated transmission in the time domain will lead to a low utilization rate of spectrum resources. In addition, the method of repeated transmission in the time domain will bring additional delay.

For 5G NR, the coverage performance of PUSCH is a bottleneck. For example, as shown in Fig. 3, the accuracy of channel estimation is improved by performing joint channel estimation between DMRS transmitted by the same user's PUSCH between different time slots or within the same time slot, thereby improving the coverage performance of the network. . 3, when each of time slot 1, time slot 2, ... time slot m is designed to have the same DMRS configuration, the transmission of DMRS can perform joint channel estimation, thereby improving the accuracy of channel estimation. However, in the current DMRS design, the configuration of the DMRS is fixed, so it cannot be changed dynamically, which results in that the transmission of different DMRSs cannot perform joint channel estimation.

By designing a DMRS transmission method, the DMRS transmission is dynamically adjustable, thereby improving the coverage performance of the network, which is a feasible technical solution. That is to say, in the case of limited network coverage, by flexibly adjusting the DMRS transmission method, the coverage performance of the network can be effectively improved.

An embodiment of the present disclosure provides a data transmission method, which is applied to a network device. Fig. 4 is a flowchart of a data transmission method according to an exemplary embodiment. Referring to FIG. 4 , the data transmission method applied to a network device includes the following steps S11 and S12.

In step S11, the demodulation reference signal DMRS configuration information is determined, and the DMRS configuration information includes at least a parameter used to indicate the time domain position of the DMRS.

In step S12, DMRS configuration information is sent.

In the embodiment of the present disclosure, the time domain location of the DMRS can be dynamically adjusted in the case of limited network coverage or any appropriate situation. Specifically, the network device can determine the DMRS configuration information and send the DMRS configuration information. Since the DMRS configuration information includes parameters for indicating the time domain location of the DMRS, this enables flexible adjustment of the DMRS transmission, thus improving the coverage performance of the network.

In an embodiment of the present disclosure, the DMRS configuration information at least includes at least one DMRS configuration used to indicate a time domain position of the DMRS, and each DMRS configuration in the at least one DMRS configuration is used to indicate n DMRS time domain positions; wherein , where n is a positive integer greater than or equal to 0.

Fig. 5 is a schematic diagram showing a DMRS configuration according to an exemplary embodiment. Referring to FIG. 5 , in this embodiment of the present disclosure, at least one DMRS configuration is pre-configured, for example, N+1 DMRS configurations in FIG. 5 , that is, DMRS configuration 0, DMRS configuration 1, DMRS configuration 2, and DMRS configuration 3 , ... DMRS configuration N. These DMRS configurations may be pre-configured, for example, based on data transmission performance simulation and analysis results between network devices and terminals. It should be noted that these are merely examples for preconfigured DMRS configurations, and embodiments of the present disclosure are not so limited.

In an embodiment of the present disclosure, as shown in FIG. 5 , each DMRS configuration indicates a transmission position of the DMRS in the time domain. Each DMRS configuration indicates n DMRS time domain locations, where n is a positive integer greater than or equal to 0.

In an embodiment of the present disclosure, each DMRS configuration may indicate one DMRS time domain location. As shown in Fig. 5, DMRS configuration 1 and DMRS configuration 2 respectively indicate 1 DMRS time domain location, ie, one sub-slot in each time slot can be selected as the time domain transmission location of DMRS, for example, in DMRS Subslot 1 in configuration 1 or subslot 7 in DMRS configuration 2. Of course, the network device can configure one or more DMRS configurations for the terminal; and when the network device can configure multiple DMRS configurations for the terminal, these DMRS configurations may be completely different or not identical. It should be noted that the number of DMRS time-domain locations described above is only an exemplary illustration, and the number of DMRS time-domain locations indicated by each DMRS configuration may be pre-configured according to factors such as network equipment, terminals, and application scenarios, and the embodiments of the present disclosure Not subject to this restriction.

In one embodiment of the present disclosure, each DMRS configuration may indicate one or more DMRS time domain locations. As shown in FIG. 5, DMRS configuration 3 indicates 2 DMRS time domain positions, and DMRS configuration N indicates 5 DMRS time domain positions. It should be noted that the number of DMRS time-domain locations described above is only an exemplary illustration, and the number of DMRS time-domain locations indicated by each DMRS configuration may be pre-configured according to factors such as network equipment, terminals, and application scenarios, and the embodiments of the present disclosure Not subject to this restriction.

In an embodiment of the present disclosure, the DMRS configuration information is a bit sequence bitmap, and the bit sequence includes bits used to indicate at least one DMRS configuration. In the embodiment of the present disclosure, the bit sequence bitmap is a series of bits, and the length of the bits is not limited.

In an embodiment of the present disclosure, sending the DMRS configuration information includes: sending the DMRS configuration information through a first scheduling instruction. The DMRS configuration information is carried in the first information field of the first scheduling instruction. The first information field includes at least a bit value used to indicate a DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In an embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is fixed or configurable. In an embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is fixed, and the position of the first information field is determined; in the embodiment of the present disclosure, the position of the first information field may be It is determined based on the communication protocol or pre-configured based on the network side device and the terminal, which is not limited in the embodiments of the present disclosure. In this case, the DMRS configuration information is indicated by an information field at a fixed position in the first scheduling instruction during each scheduling. In an embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is configurable, that is, the position of the first information field may not be fixed. In this case, the location of the first information field in the scheduling instruction can be pre-configured through high-layer signaling or physical layer signaling, so that the information in the first information field is used to indicate the data transmission used in the scheduled data transmission in this scheduling instruction. The configuration information of the DMRS, that is, the transmission location information of the DMRS.

In an embodiment of the present disclosure, the data transmission method further includes: sending first information, where the first information is used to indicate activation of the dynamic adjustment of the DMRS configuration information, or to indicate the inactivation of the dynamic adjustment of the DMRS configuration information. In an embodiment of the present disclosure, the data transmission method further includes: sending first information, where the first information is used to indicate activation of one or more DMRS configuration information among the plurality of DMRS configuration information.

That is, in this embodiment of the present disclosure, the network device can be configured through the first information, whether the corresponding terminal activates the aforementioned DMRS configuration information. In some possible implementations, the DMRS configuration information can be sent to the terminals in a broadcast manner, and each terminal can individually indicate whether to activate the DMRS configuration information through the first information. This can save signaling overhead. In some possible implementations, the DMRS configuration information can be sent to each terminal in a broadcast manner, and each terminal can be individually instructed whether to activate the DMRS configuration information through the first information or any other appropriate information. This can save signaling overhead. In some possible implementations, a plurality of DMRS configuration information can be sent to the terminal in a broadcast manner, and each terminal can be individually indicated by first information or any other appropriate information whether to activate the DMRS configuration information, and whether to activate the multiple DMRS configuration information. One or more DMRS configuration information in the pieces of DMRS configuration information. This can save signaling overhead.

Fig. 6 is a flowchart of a data transmission method according to an exemplary embodiment. Referring to FIG. 6 , the data transmission method applied to a network device includes the following steps S21 to S23.

In step S21, the demodulation reference signal DMRS configuration information is determined, and the DMRS configuration information includes at least a parameter used to indicate the time domain position of the DMRS.

In step S22, DMRS configuration information is sent.

In step S23, first information is sent, where the first information is used to indicate activation of the dynamic adjustment of the DMRS configuration information, or to indicate the inactivation of the dynamic adjustment of the DMRS configuration information.

In all the embodiments of the present disclosure, the order of the aforementioned step S21, step S22, and step 23 can be adjusted at will. That is: the step S23 of sending the first information for activating or deactivating the dynamic adjustment of the DMRS configuration information can be performed in any time slot of the method, which is not limited in the embodiments of the present disclosure.

In an embodiment of the present disclosure, the data transmission method further includes: sending second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

Fig. 7 is a flowchart showing a data transmission method according to an exemplary embodiment. Referring to FIG. 7 , the data transmission method applied to a network device includes the following steps S31 to S33.

In step S31, the demodulation reference signal DMRS configuration information is determined, and the DMRS configuration information includes at least a parameter used to indicate the time domain position of the DMRS.

In step S32, DMRS configuration information is sent.

In step S33, the second information is sent, and the second information is used to indicate the DMRS sequence information corresponding to the time domain position.

In all the embodiments of the present disclosure, the sequence of the aforementioned step S31, step S32, and step 33 can be adjusted at will. That is, the step S33 of sending the second information may be performed in any time slot of the method, which is not limited in this embodiment of the present disclosure. In all the embodiments of the present disclosure, the first information and the DMRS configuration information may be carried in the same signaling, or may be carried in different signaling; the embodiments of the present disclosure do not limit this. In all embodiments of the present disclosure, the foregoing steps S31-S33 may include any other steps in the embodiments of the present disclosure, for example, may include step S23, and the execution time slots of these other steps included may be the foregoing steps S31-S33 The embodiment of the present disclosure does not limit the execution time slot of each step in the method. The above-mentioned embodiment about sending the second information can be used in conjunction with the foregoing embodiment about the parameter of the time domain location of the DMRS. That is, as described in conjunction with FIG. 7 , determine DMRS configuration information including at least parameters for indicating the time domain position of the DMRS, send the DMRS configuration information, and send second information for indicating the DMRS sequence information corresponding to the time domain position. Of course, the above-mentioned embodiment about sending the second information can also be used independently, that is, the DMRS sequence information is sent independently from the DMRS time domain location information. In the embodiments of the present disclosure, the embodiments used together with the foregoing embodiments are described; of course, those skilled in the art can understand that such examples do not limit the embodiments of the present disclosure.

In an embodiment of the present disclosure, sending the second information includes: sending the second information through a second information field in the second scheduling instruction. In all the embodiments of the present disclosure, the second information, the first information, and the DMRS configuration information may be carried in the same signaling, or may be partially carried in the same signaling, or may be all carried in different signaling order; the embodiments of the present disclosure do not limit this.

In an embodiment of the present disclosure, the second information field includes at least a first identifier, and the first identifier is used to indicate that each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction is in the time domain The DMRSs correspond to different DMRS sequences. In the embodiment of the present disclosure, the first identifier may be a first bit, and the first value of the first bit is used to indicate each DMRS in the time domain position of the DMRS indicated in the second scheduling instruction The DMRSs in the time domain positions correspond to different DMRS sequences.

In an embodiment of the present disclosure, the second information field includes at least a first identifier, and the first identifier is used to indicate that each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction is in the time domain The DMRSs correspond to different DMRS sequences. In this embodiment of the present disclosure, the first identifier may be a first bit, and the second value of the first bit is used to indicate each DMRS in the time domain position of the DMRS indicated in the second scheduling instruction The DMRSs at the time domain positions correspond to the same DMRS sequence.

For example, when the first bit value is "0", it is used to indicate that the DMRS at each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction corresponds to the same DMRS sequence, and the first bit bit When the value is "1", it is used to indicate that the DMRS at each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction corresponds to a different DMRS sequence. Of course, the labels corresponding to the values may be reversed, and details are not described herein again.

In an embodiment of the present disclosure, two different bits may be used to indicate the configuration information of the DMRS sequence; that is, the first bit indicates each DMRS in the time domain position of the DMRS indicated in the second scheduling instruction The DMRS at the time domain position corresponds to the same DMRS sequence; the second bit indicates that the DMRS at each DMRS time domain position in the DMRS time domain position indicated in the second scheduling instruction corresponds to a different DMRS sequence.

In an embodiment of the present disclosure, sending the DMRS configuration information includes: sending the DMRS configuration information through higher layer signaling or physical layer signaling.

The sequence information of the DMRS is indicated on a fixed or configurable information field in the scheduling instruction, where the sequence information represents an indication of whether joint channel estimation can be performed. For example, "0" means that the DMRS at each position uses an independent DMRS sequence, and "1" means that the DMRS at each position uses the same DMRS sequence. In the case that the scheduling instruction indicates that the DMRS on each location uses the same DMRS sequence, when the scheduling instruction schedules transmission of multiple PUSCHs, the DMRS on each PUSCH uses the same DMRS sequence, such as using The DMRS sequence determined at the DMRS transmission position on the first scheduled PUSCH. When the scheduling instruction schedules the transmission of one PUSCH, the DMRSs of the PUSCH transmissions scheduled by different scheduling instructions use the same sequence, for example, use a default DMRS sequence.

In an embodiment of the present disclosure, different terminals correspond to different DMRS configuration information.

By configuring a terminal-specific DMRS configuration for each terminal, the time domain transmission position of the DMRS is indicated in the DMRS configuration. Different terminals may have different DMRS configuration tables. In the case of limited network coverage, this method can flexibly adjust the DMRS transmission method, thereby effectively improving the coverage performance of the network. In some embodiments, the DMRS configuration information corresponding to each terminal is sent through terminal-specific high-level signaling or physical layer signaling, that is, sent in a unicast manner.

In an embodiment of the present disclosure, sending the first information includes: sending the first information based on a third information field in higher layer signaling or physical layer signaling.

In an embodiment of the present disclosure, the third information field includes at least bits with a third value used to indicate activation of DMRS configuration information; or the third information field includes at least bits with a third value used to indicate inactive DMRS configuration information Four value bits.

In an embodiment of the present disclosure, the location of the third information field in the higher layer signaling or the physical layer signaling is fixed.

In an embodiment of the present disclosure, the dynamic DMRS adjustment mechanism described above can be activated or deactivated through higher layer signaling or physical layer signaling. For example, whether to activate or not to activate the above-mentioned dynamic DMRS adjustment mechanism is indicated on a certain fixed information field of high-layer signaling or physical-layer signaling. In an embodiment of the present disclosure, for example, "0" represents activation, and "1" represents inactivation. The information in the physical layer signaling for detecting activation or inactivation may be pre-configured.

Based on the same concept, an embodiment of the present disclosure also provides a data transmission method, which is applied to a terminal. Fig. 8 is a flowchart of a data transmission method according to an exemplary embodiment. Referring to FIG. 8 , the data transmission method applied to the terminal includes the following step S41.

In step S41, demodulation reference signal DMRS configuration information is received, where the DMRS configuration information at least includes a configuration for indicating the time domain position of the DMRS.

In the embodiment of the present disclosure, the time domain location of the DMRS can be dynamically adjusted in the case of limited network coverage or any appropriate situation. Specifically, the terminal device can receive demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a configuration for indicating the time domain position of the DMRS. Since the DMRS configuration information includes parameters for indicating the time domain location of the DMRS, this enables flexible adjustment of the DMRS transmission, thus improving the coverage performance of the network.

In an embodiment of the present disclosure, the DMRS configuration information at least includes at least one DMRS configuration used to indicate a time domain position of the DMRS, and each DMRS configuration in the at least one DMRS configuration is used to indicate n DMRS time domain positions; wherein , where n is a positive integer greater than or equal to 0. Of course, the network device can configure one or more DMRS configurations for the terminal; and when the network device can configure multiple DMRS configurations for the terminal, these DMRS configurations may be completely different or not identical. It should be noted that the number of DMRS time-domain locations described above is only an exemplary illustration, and the number of DMRS time-domain locations indicated by each DMRS configuration may be pre-configured according to factors such as network equipment, terminals, and application scenarios, and the embodiments of the present disclosure Not subject to this restriction. In one embodiment of the present disclosure, each DMRS configuration may indicate one or more DMRS time domain locations. As shown in FIG. 5, DMRS configuration 3 indicates 2 DMRS time domain positions, and DMRS configuration N indicates 5 DMRS time domain positions. It should be noted that the number of DMRS time-domain locations described above is only an exemplary illustration, and the number of DMRS time-domain locations indicated by each DMRS configuration may be pre-configured according to factors such as network equipment, terminals, and application scenarios, and the embodiments of the present disclosure Not subject to this restriction.

In an embodiment of the present disclosure, receiving DMRS configuration information includes: receiving DMRS configuration information by using a first scheduling instruction, where the DMRS configuration information is carried in a first information field of the first scheduling instruction, and the first information field at least includes information for A bit value indicating the DMRS configuration used by the data transmission scheduled by the first scheduling instruction.

In an embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is fixed or configurable. When the position of the first information field in the first scheduling instruction is fixed, the position of the first information field is fixed. In this case, the configuration information of the DMRS is indicated by the information field at the fixed position in the first scheduling instruction during each scheduling. When the position of the first information field in the first scheduling instruction is configurable, the position of the first information field may not be fixed. In this case, the location of the first information field in the scheduling instruction can be pre-configured through high-layer signaling or physical layer signaling, so that the information in the first information field is used to indicate the data transmission used in the scheduled data transmission in this scheduling instruction. The configuration information of the DMRS, that is, the transmission location information of the DMRS.

In an embodiment of the present disclosure, the data transmission method further includes: receiving first information, where the first information is used to instruct to activate the dynamic adjustment of the DMRS configuration information, or to instruct not to activate the dynamic adjustment of the DMRS configuration information.

Fig. 9 is a flowchart showing a data transmission method according to an exemplary embodiment. Referring to FIG. 9 , the data transmission method applied to the terminal includes the following steps S51 and S52.

In step S51, demodulation reference signal DMRS configuration information is received, where the DMRS configuration information at least includes a configuration for indicating the time domain position of the DMRS.

In step S52, first information is received, where the first information is used to indicate activation of the dynamic adjustment of the DMRS configuration information, or to indicate the inactivation of the dynamic adjustment of the DMRS configuration information.

In an embodiment of the present disclosure, the data transmission method further includes: receiving first information, where the first information is used to instruct activation of one or more DMRS configuration information in the plurality of DMRS configuration information.

In an embodiment of the present disclosure, the data transmission method further includes: receiving second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

Fig. 10 is a flowchart showing a data transmission method according to an exemplary embodiment. Referring to FIG. 10 , the data transmission method applied to the terminal includes the following steps S61 and S62.

In step S61, demodulation reference signal DMRS configuration information is received, where the DMRS configuration information at least includes a configuration for indicating the time domain position of the DMRS.

In step S62, the second information is received, where the second information is used to indicate the DMRS sequence information corresponding to the time domain position.

The above-mentioned embodiments about receiving the second information can be used in conjunction with the aforementioned embodiments about the parameters of the time domain location of the DMRS. That is, as described in conjunction with FIG. 10 , the DMRS configuration information is received, the DMRS configuration information includes at least the configuration used to indicate the time domain position of the DMRS, and the second information used to indicate the DMRS sequence information corresponding to the time domain position is received. Of course, the above-mentioned embodiment about receiving the second information can also be used independently, that is, the DMRS sequence information is received independently from the DMRS time domain location information. In the embodiments of the present disclosure, the embodiments used together with the foregoing embodiments are described; of course, those skilled in the art can understand that such examples do not limit the embodiments of the present disclosure.

In an embodiment of the present disclosure, receiving the second information includes: receiving the second information through a second information field in the second scheduling instruction.

The second information field includes at least a first identifier, and the first identifier is used to indicate that the DMRS at each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction corresponds to a different DMRS sequence. In the embodiment of the present disclosure, the first identifier may be a first bit, and the first value of the first bit is used to indicate each DMRS in the time domain position of the DMRS indicated in the second scheduling instruction The DMRSs in the time domain positions correspond to different DMRS sequences.

In an embodiment of the present disclosure, the data transmission method further includes: performing joint channel estimation based on the same DMRS sequence.

In an embodiment of the present disclosure, sending the DMRS configuration information includes: receiving the DMRS configuration information through higher layer signaling or physical layer signaling.

In an embodiment of the present disclosure, receiving the first information includes: receiving the first information based on a third information field in higher layer signaling or physical layer signaling.

In an embodiment of the present disclosure, two different bits may be used to indicate whether to activate the DMRS configuration information, and different values of one bit may be used to indicate whether to activate the DMRS configuration information.

Based on the same concept, an embodiment of the present disclosure also provides a data transmission apparatus, which is applied to a network device. Fig. 11 is a block diagram of a data transmission apparatus according to an exemplary embodiment. Referring to FIG. 11 , the data transmission apparatus 100 is applied to a network device, and includes a determining unit 101 and a sending unit 102 .

The determining unit 101 is configured to determine demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a configuration for indicating a time domain position of the DMRS. The sending unit 102 is configured to send the DMRS configuration information.

In an embodiment of the present disclosure, the sending unit 102 is further configured to: send DMRS configuration information through a first scheduling instruction, where the DMRS configuration information is carried in a first information field of the first scheduling instruction, and the first information field at least includes The bit value for indicating the DMRS configuration used by the data transmission scheduled by the first scheduling instruction.

In an embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is fixed or configurable.

In an embodiment of the present disclosure, the sending unit 102 is further configured to send first information, where the first information is used to indicate activation of the dynamic adjustment of the DMRS configuration information, or to indicate the inactivation of the dynamic adjustment of the DMRS configuration information.

In an embodiment of the present disclosure, the sending unit 102 is further configured to: send second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

In an embodiment of the present disclosure, the sending unit 102 is further configured to send the second information through the second information field in the second scheduling instruction.

In an embodiment of the present disclosure, the sending unit 102 is further configured to send the DMRS configuration information through higher layer signaling or physical layer signaling.

In an embodiment of the present disclosure, the sending unit 102 is further configured to: send the first information based on the third information field in the higher layer signaling or the physical layer signaling.

It can be understood that, in order to implement the above-mentioned functions, the data transmission apparatus provided by the embodiments of the present disclosure includes corresponding hardware structures and/or software modules for executing each function. Combining with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software-driven hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

Based on the same concept, an embodiment of the present disclosure also provides a data transmission apparatus, which is applied to a terminal. Fig. 12 is a block diagram of a data transmission apparatus according to an exemplary embodiment. Referring to FIG. 12 , the data transmission apparatus 200 is applied to a terminal, and includes a receiving unit 201 .

The receiving unit 201 is configured to receive demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a configuration for indicating a time domain position of the DMRS.

In an embodiment of the present disclosure, the receiving unit 201 is further configured to: receive DMRS configuration information through a first scheduling instruction, where the DMRS configuration information is carried in a first information field of the first scheduling instruction, and the first information field at least includes The bit value for indicating the DMRS configuration used by the data transmission scheduled by the first scheduling instruction.

In an embodiment of the present disclosure, the receiving unit 201 is further configured to: receive first information, where the first information is used to indicate activation of the dynamic adjustment of the DMRS configuration information, or to indicate the inactivation of the dynamic adjustment of the DMRS configuration information.

In an embodiment of the present disclosure, the receiving unit 201 is further configured to: receive second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.

In an embodiment of the present disclosure, in an embodiment of the present disclosure, the receiving unit 201 is further configured to: receive and receive the second information based on the second information field in the second scheduling instruction.

In an embodiment of the present disclosure, the data transmission apparatus further includes: a processing unit configured to perform joint channel estimation based on the same DMRS sequence.

Fig. 13 is a block diagram of a data transmission apparatus according to an exemplary embodiment. Referring to FIG. 13 , the data transmission apparatus 200 is applied to a terminal, and includes a receiving unit 201 and a processing unit 202 .

The processing unit 202 is configured to perform joint channel estimation based on the same DMRS sequence.

In an embodiment of the present disclosure, the receiving unit 201 is further configured to receive the DMRS configuration information through higher layer signaling or physical layer signaling.

In an embodiment of the present disclosure, the receiving unit 201 is further configured to: receive the first information based on the third information field in the higher layer signaling or the physical layer signaling.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

Based on the same concept, an embodiment of the present disclosure also provides a communication system, the communication system includes: the above-mentioned data transmission apparatus 100 applied to a network device; and a data transmission apparatus 200 applied to a terminal. For the functions of the data transmission apparatus 100 and the data transmission apparatus 200, reference may be made to the specific descriptions of the foregoing embodiments.

FIG. 14 is a block diagram of an apparatus 300 for data transmission according to an exemplary embodiment. For example, the apparatus 300 may be a terminal. The terminal may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.

14, apparatus 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input/output (I/O) interface 312, sensor component 314, and Communication component 316 .

The processing component 302 generally controls the overall operation of the device 300, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 302 may include one or more processors 320 to execute instructions to perform all or some of the steps of the methods described above. Additionally, processing component 302 may include one or more modules that facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302 .

Memory 304 is configured to store various types of data to support operations at device 300 . Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, and the like. Memory 304 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

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

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

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

The I/O interface 312 provides an interface between the processing component 302 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.

Sensor assembly 314 includes one or more sensors for providing status assessment of various aspects of device 300 . For example, the sensor assembly 314 can detect the open/closed state of the device 300, the relative positioning of components, such as the display and keypad of the device 300, and the sensor assembly 314 can also detect a change in the position of the device 300 or a component of the device 300 , the presence or absence of user contact with the device 300 , the orientation or acceleration/deceleration of the device 300 and the temperature change of the device 300 . Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 314 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

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

In an exemplary embodiment, apparatus 300 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.

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

FIG. 15 is a block diagram of an apparatus 400 for data transmission according to an exemplary embodiment. The apparatus 400 may be a network device. 15, apparatus 400 includes a processing component 422, which further includes one or more processors, and a memory resource, represented by memory 432, for storing instructions executable by processing component 422, such as an application program. An application program stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Additionally, the processing component 422 is configured to execute instructions to perform the above-described methods.

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

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

It should be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the related objects are an "or" relationship. The singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It is further understood that the terms "first", "second", etc. are used to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish the same type of information from one another, and do not imply a particular order or level of importance. In fact, the expressions "first", "second" etc. are used completely interchangeably. For example, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information, without departing from the scope of the present disclosure.

It is further to be understood that, although the operations in the embodiments of the present disclosure are described in a specific order in the drawings, it should not be construed as requiring that the operations be performed in the specific order shown or the serial order, or requiring Perform all operations shown to obtain the desired result. In certain scenarios, multitasking and parallel processing may be advantageous.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or techniques in the technical field not disclosed by the present disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A data transmission method, characterized in that, applied to a network device, the data transmission method comprising:

determining demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a parameter used to indicate a time domain location of the DMRS;

Send the DMRS configuration information.
The data transmission method according to claim 1, wherein the DMRS configuration information at least includes at least one DMRS configuration used to indicate the time domain position of the DMRS, and each DMRS configuration in the at least one DMRS configuration uses to indicate n DMRS time domain locations;

Among them, n is a positive integer greater than or equal to 0.
The data transmission method according to claim 2, wherein the DMRS configuration information is a bit sequence, and the bit sequence includes bits used to indicate the at least one DMRS configuration.
The data transmission method according to claim 3, wherein the sending DMRS configuration information comprises:

The DMRS configuration information is sent through a first scheduling instruction, wherein the DMRS configuration information is carried in a first information field of the first scheduling instruction, and the first information field at least includes a message used to indicate the first scheduling instruction. The bit value of the DMRS configuration used for the scheduled data transmission.
The data transmission method according to claim 4, wherein the position of the first information field in the first scheduling instruction is fixed or configurable.
The data transmission method according to any one of claims 1 to 5, wherein the data transmission method further comprises:

First information is sent, where the first information is used to instruct to activate dynamic adjustment of the DMRS configuration information, or to instruct not to activate the dynamic adjustment of the DMRS configuration information.
The data transmission method according to claim 1, wherein the data transmission method further comprises:

Send second information, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.
The data transmission method according to claim 7, wherein the sending the second information comprises:

The second information is sent through the second information field in the second scheduling instruction.
The data transmission method according to claim 8, wherein the second information field includes at least a first identifier, and the first identifier is used to indicate the time domain position of the DMRS indicated in the second scheduling instruction The DMRS at each DMRS time domain position in the DMRS corresponds to a different DMRS sequence.
The data transmission method according to claim 8, wherein the second information field includes at least a first identifier, and the first identifier is used to indicate the time domain position of the DMRS indicated in the second scheduling instruction The DMRS at each DMRS time domain position in the DMRS corresponds to the same DMRS sequence.
The data transmission method according to claim 1, wherein the sending DMRS configuration information comprises:

The DMRS configuration information is sent through higher layer signaling or physical layer signaling.
The data transmission method according to claim 1, wherein different terminals correspond to different DMRS configuration information.
A data transmission method, characterized in that it is applied to a terminal, the data transmission method comprising:

Receive demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes parameters used to indicate the time domain position of the DMRS.
The data transmission method according to claim 13, wherein the DMRS configuration information at least includes at least one DMRS configuration used to indicate the time domain position of the DMRS, and each DMRS configuration in the at least one DMRS configuration uses to indicate n DMRS time domain locations;

Among them, n is a positive integer greater than or equal to 0.
The data transmission method according to claim 13, wherein the DMRS configuration information is a bit sequence, and the bit sequence includes bits used to indicate the at least one DMRS configuration.
The data transmission method according to claim 15, wherein the receiving DMRS configuration information comprises:

The DMRS configuration information is received through a first scheduling instruction, wherein the DMRS configuration information is borne in a first information field of the first scheduling instruction, and the first information field at least includes an instruction for indicating the first scheduling instruction The bit value of the DMRS configuration used for the scheduled data transmission.
The data transmission method according to claim 16, wherein the position of the first information field in the first scheduling instruction is fixed or configurable.
The data transmission method according to any one of claims 13 to 17, wherein the data transmission method further comprises:

First information is received, where the first information is used to indicate activation of dynamic adjustment of the DMRS configuration information, or used to indicate that the dynamic adjustment of the DMRS configuration information is not activated.
The data transmission method according to claim 13, wherein the data transmission method further comprises:

Second information is received, where the second information is used to indicate DMRS sequence information corresponding to the time domain position.
The data transmission method according to claim 19, wherein the receiving the second information comprises:

The second information is received through the second information field in the second scheduling instruction.
The data transmission method according to claim 20, wherein the second information field includes at least a first identifier, and the first identifier is used to indicate the time domain position of the DMRS indicated in the second scheduling instruction The DMRS at each DMRS time domain position in the DMRS corresponds to a different DMRS sequence.
The data transmission method according to claim 20, wherein the second information field includes at least a first identifier, and the first identifier is used to indicate the time domain position of the DMRS indicated in the second scheduling instruction The DMRS at each DMRS time domain position in the DMRS corresponds to the same DMRS sequence.
The data transmission method according to claim 22, wherein the data transmission method further comprises:

Joint channel estimation is performed based on the same DMRS sequence.
The data transmission method according to claim 23, wherein the receiving DMRS configuration information comprises:

The DMRS configuration information is received through high layer signaling or physical layer signaling.
A data transmission device, characterized in that it is applied to network equipment, and the data transmission device comprises:

a determining unit, configured to determine demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a parameter used to indicate a time domain position of the DMRS;

A sending unit, configured to send the DMRS configuration information.
A data transmission device, characterized in that it is applied to a terminal, and the data transmission device comprises:

The receiving unit is configured to receive demodulation reference signal DMRS configuration information, where the DMRS configuration information at least includes a parameter used to indicate the time domain position of the DMRS.
A data transmission device, characterized in that it is applied to network equipment, and the data transmission device comprises:

processor;

memory for storing processor-executable instructions,

Wherein, the processor is configured to: execute the data transmission method according to any one of claims 1-12.
A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor of a network device, enabling the network device to execute the data transmission method according to any one of claims 1-12.
A data transmission device, characterized in that it is applied to a terminal, and the data transmission device comprises:

processor;

memory for storing processor-executable instructions,

Wherein, the processor is configured to: execute the data transmission method according to any one of claims 13-24.
A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the terminal, the terminal can execute the data transmission method according to any one of claims 13-24.