CN111919415B

CN111919415B - Data transmission method and device and storage medium

Info

Publication number: CN111919415B
Application number: CN202080001392.7A
Authority: CN
Inventors: 朱亚军
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2022-07-29
Anticipated expiration: 2040-06-28
Also published as: CN111919415A; WO2022000143A1

Abstract

The disclosure relates to a data transmission method and device and a storage medium. The data transmission method provided by the embodiment of the disclosure is applied to network equipment, and comprises the following steps: determining demodulation reference signal (DMRS) configuration information, wherein the DMRS configuration information is used for representing DMRS time domain positions; and transmitting the DMRS configuration information. Network coverage performance enhancement is achieved by the present disclosure.

Description

Data transmission method and device and storage medium

Technical Field

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

Background

New internet applications such as Augmented Reality (AR), Virtual Reality (VR), Vehicle-to-Vehicle (V2V) communication, etc. are emerging and have made higher demands on wireless communication technology. This drives the evolution of wireless communication technologies to meet application requirements. Cellular mobile communications technology is currently in the evolution of a new generation of technology. An important feature of the new generation of technology is to support flexible configuration of multiple service types. Different traffic types have different requirements for wireless communication technologies. For example, the requirement of enhanced Mobile broadband (eMBB) traffic type focuses on large bandwidth, high rate, and the like. The requirements of Ultra-high Reliable and Low Latency Communication (URLLC) traffic types focus on higher reliability and Low Latency. The requirement of large Machine Type Communication (mtc) traffic Type is focused on large connection count. New generation wireless communication systems therefore require flexible and configurable designs to support the transmission of multiple traffic types.

For a cellular mobile communication system to be scaled, the coverage performance of the network is crucial. This directly affects the operator's network deployment. In the case of dense network deployment, the coverage performance of the network may be better, but the cost of the operator may be increased. Under the condition of sparse network deployment, the coverage performance of the network is poor.

In order to improve the coverage performance of the network, the related art adopts a repeated transmission mode to enhance the coverage performance of the network. For example, the performance of uplink coverage is improved by repeated transmission in the time domain. However, the method of repeating transmission in the time domain may result in a low utilization rate of the spectrum resource and may cause additional delay. The related art also indicates that Joint Channel Estimation (DMRS) is performed on Demodulation Reference signals (DMRSs) transmitted by Physical Uplink Shared Channels (PUSCHs) of the same user between different slots (slots) or within the same slot to improve accuracy of Channel Estimation, thereby improving coverage performance of a network. However, in current DMRS design, the configuration of DMRS is fixed and therefore cannot be changed dynamically, which makes the transmission of different DMRSs impossible for joint channel estimation.

Disclosure of Invention

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

According to a first aspect of the embodiments of the present disclosure, there is provided a data transmission method applied to a network device, the data transmission method including: determining demodulation reference signal (DMRS) configuration information, wherein the DMRS configuration information at least comprises a parameter for indicating the time domain position of the DMRS; and transmitting the DMRS configuration information.

In one embodiment, the DMRS configuration information includes at least one DMRS configuration indicating time-domain positions of DMRSs, and each of the at least one DMRS configuration is used to indicate n DMRS time-domain positions; wherein 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 for indicating the at least one DMRS configuration.

In another embodiment, the transmitting DMRS configuration information includes: and 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 first information field at least comprises a bit value used for indicating the DMRS configuration used for the data transmission scheduled by the first scheduling instruction.

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

In another embodiment, the data transmission method further includes: and sending first information, wherein the first information is used for indicating that the dynamic adjustment of the DMRS configuration information is activated or indicating that the dynamic adjustment of the DMRS configuration information is not activated.

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

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

In yet another embodiment, the second information field includes at least a first identifier indicating that the DMRS at each of the DMRS time-domain positions indicated in the second scheduling instruction corresponds to a different DMRS sequence.

In yet another embodiment, the second information field includes at least a first identifier indicating that the DMRS at each of the DMRS time-domain positions indicated in the second scheduling instruction corresponds to the same DMRS sequence.

In another embodiment, the transmitting DMRS configuration information includes: and transmitting the DMRS configuration information through high-layer signaling or physical layer signaling.

In yet another embodiment, different terminals have different DMRS configuration information.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for data transmission applied to a terminal, the method including: receiving demodulation reference signal (DMRS) configuration information, wherein the DMRS configuration information at least comprises a parameter for indicating the 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 first information field at least comprises a bit value used for indicating the DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In another embodiment, the data transmission method further includes: receiving first information, wherein the first information is used for indicating that the dynamic adjustment of the DMRS configuration information is activated or indicating that the dynamic adjustment of the DMRS configuration information is not activated.

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

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

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

In another embodiment, the receiving DMRS configuration information includes: and receiving the DMRS configuration information through high-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, applied to a network device, the data transmission apparatus including: a determining unit configured to determine demodulation reference signal, DMRS, configuration information including at least a parameter indicating a time-domain position of a DMRS; a transmitting unit configured to transmit the DMRS configuration information.

In yet another embodiment, the sending unit is further configured to: and 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 first information field at least comprises a bit value used for indicating the DMRS configuration used for the data transmission scheduled by the first scheduling instruction.

In yet another embodiment, the sending unit is further configured to: and sending first information, wherein the first information is used for indicating that the dynamic adjustment of the DMRS configuration information is activated or indicating that the dynamic adjustment of the DMRS configuration information is not activated.

In yet another embodiment, the sending unit is further configured to: and sending second information, wherein the second information is used for indicating the DMRS sequence information corresponding to the time domain position.

In yet another embodiment, the sending unit is further configured to: and sending the second information through a second information field in a second scheduling instruction.

In yet another embodiment, the sending unit is further configured to: and transmitting the DMRS configuration information through high-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, which is applied to a terminal, the data transmission apparatus including: a receiving unit configured to receive demodulation reference signal (DMRS) configuration information including at least a parameter indicating a time domain position of a DMRS.

In yet another embodiment, the receiving unit is further configured to: 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 first information field at least comprises a bit value used for indicating the DMRS configuration used for data transmission scheduled by the first scheduling instruction.

In yet another embodiment, a position of the first information field in the first scheduling instruction is fixed or configurable.

In yet another embodiment, the receiving unit is further configured to: receiving first information, wherein the first information is used for indicating that the dynamic adjustment of the DMRS configuration information is activated or indicating that the dynamic adjustment of the DMRS configuration information is not activated.

In yet another embodiment, the receiving unit is further configured to: and receiving second information, wherein the second information is used for indicating the DMRS sequence information corresponding to the time domain position.

In yet another embodiment, the receiving unit is further configured to: and receiving the second information based on the second information field in the second scheduling instruction.

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

In yet another embodiment, the receiving unit is further configured to: and receiving the DMRS configuration information through high-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, including: a processor; a memory for storing processor-executable instructions, wherein the processor is configured to perform the data transmission method provided in any of the preceding aspects.

According to a sixth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions of the storage medium, when executed by a processor of a network device, enable the network device to perform the data transmission method provided in any of the foregoing first aspects.

According to a seventh aspect of the embodiments of the present disclosure, there is provided a data transmission apparatus, applied to a terminal, including: a processor; a memory for storing processor-executable instructions, wherein the processor is configured to: and executing the data transmission method provided by any technical scheme of the second aspect.

According to an eighth aspect of embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions of the storage medium, when executed by a processor of a terminal, enable the terminal to perform the data transmission method provided in any of the foregoing second aspects.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: determining demodulation reference signal (DMRS) configuration information, wherein the DMRS configuration information at least comprises a parameter for indicating the time domain position of the DMRS; and transmitting the DMRS configuration information. This enables dynamic adjustment of the time domain location of the DMRS in case of limited network coverage or any suitable situation, thereby effectively improving the coverage performance of the network.

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

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 illustrating a wireless communication system in accordance with an example embodiment.

Fig. 2 is a diagram illustrating a repeat transmission in accordance with an example embodiment.

Fig. 3 is a diagram illustrating a joint channel estimation in accordance with an example embodiment.

Fig. 4 is a flow chart illustrating a method of data transmission according to an example embodiment.

Fig. 5 is a diagram illustrating a DMRS configuration, according to an example embodiment.

Fig. 6 is a flow chart illustrating a method of data transmission according to an example embodiment.

Fig. 7 is a flow chart illustrating a method of data transmission according to an example embodiment.

Fig. 8 is a flow chart illustrating a method of data transmission according to an example embodiment.

Fig. 9 is a flow chart illustrating a method of data transmission according to an example embodiment.

FIG. 10 is a flow chart illustrating a method of data transmission according to an example embodiment.

Fig. 11 is a block diagram illustrating a data transmission apparatus according to an example embodiment.

Fig. 12 is a block diagram illustrating a data transmission apparatus according to an example embodiment.

Fig. 13 is a block diagram illustrating a data transmission apparatus according to an example embodiment.

Fig. 14 is a block diagram illustrating an apparatus for data transmission in accordance with an example embodiment.

Fig. 15 is a block diagram illustrating an apparatus for data transmission in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The data transmission method provided by the embodiment of the 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 with the network equipment through wireless resources and carries out data transmission.

It is to be understood that the wireless communication system shown in fig. 1 is merely illustrative. Other network devices, such as a core network device, a wireless relay device, a wireless backhaul device, etc., may also be included in the wireless communication system, which is not shown in fig. 1. The number of network devices and the number of terminals included in the wireless communication system are not limited in the embodiments of the present disclosure.

It is further understood that the wireless communication system of the embodiment of the present disclosure is a network providing a wireless communication function. The wireless communication system may employ different communication technologies, such as Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier FDMA (SC-FDMA), Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). Networks can be classified into 2G (english: generation) networks, 3G networks, 4G networks or future evolution networks, such as 5G networks, according to factors such as capacity, rate and delay of different networks, and the 5G networks can also be referred to as New Radio Networks (NR). For ease of description, this disclosure will sometimes simply refer to a wireless communication network as a network.

Further, the network devices referred to in this disclosure may also be referred to as radio access network devices. The radio access network device may be: the base station, an evolved NodeB (eNodeB or eNB), a home base station, an Access Point (AP), a wireless relay node, a wireless backhaul node, a Transmission Point (TP), a Transmission and Reception Point (TRP) in a wireless fidelity (WIFI) system, and the like may also be a base station (gbnodeb or gNB) in an NR system, or may also be a component or a part of a device constituting the base station. It should be understood that, in the embodiments of the present disclosure, specific technologies and specific device forms adopted by the network device are not limited. In the present disclosure, a network device may provide communication coverage for a particular geographic area and may communicate with terminals located within that coverage area (cell). Furthermore, when being a communication system of the internet of vehicles (V2X), the network device may also be an in-vehicle device.

Further, the Terminal referred to in this disclosure may also be referred to as a Terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like, and is a device that provides voice and/or data connectivity to a User, for example, the Terminal may be a handheld device having a wireless connection function, a vehicle-mounted device, and the like. Currently, some examples of terminals are: a smart Phone (Mobile Phone), a Pocket Computer (PPC), a palm top Computer, a Personal Digital Assistant (PDA), a notebook Computer, a tablet Computer, a wearable device, or a vehicle-mounted device, etc. Furthermore, when being a communication system of the internet of vehicles (V2X), the terminal device may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technologies and the specific device forms adopted by the terminal.

The pilot plays an important role in a wireless communication system, and may be used for channel detection, physical channel demodulation, or the like. For example, transmissions between wireless devices are often affected by noisy channel conditions and interference. In this case, pilots may be inserted into transmissions between wireless devices to help achieve coherent channel estimation. The pilot is a known signal that the receiver can use to perform channel estimation to help decode the received message. For example, the DMRS may be used for channel estimation of communication between the ue and the base station, and based on the channel estimation, the attenuation of a channel to a radio signal sent by the base station may be determined, and then when demodulating data sent by the base station, a signal strength threshold may be obtained according to the attenuation of the radio signal by the ue, so as to assist the ue in demodulating the data sent by the base station. For example, DMRS may be multiplexed with data in a message from a transmitter to a receiver to help the receiver estimate the channel quality, and the receiver may in turn use the channel estimate to assist in demodulation and decoding of the received message.

In the development of wireless communication systems, for unlicensed spectrum, 3GPP proposes to use an unlicensed frequency band by a LAA (License Assisted Access) mechanism. That is, the licensed frequency band is used to assist the unlicensed frequency band. In order to ensure coexistence with other systems in unlicensed band, such as WiFi, LBT (Listen Before Talk/Listen Before Talk) mechanism is also introduced in LAA. The sending end needs to detect whether the channel is idle when there is data to be sent. The transmitting end can transmit data only after the channel is in an idle state.

In a wireless communication system, DMRS sequence generation is in a binding relationship with an identifier of a time domain unit, for example, an initialization method for DMRS sequence generation for a PDSCH (Physical Downlink Shared Channel) includes:

wherein, c _init Is an initial value of the DMRS sequence;

is the number of symbols (symbols) included in one slot;

the number of time slots included in one radio frame in the case of subcarrier spacing configuration mu; l is the sequence number of the symbol within one slot,

is a cell number (ID) of a serving cell, and n _SCID Is an offset value.

In order to improve the coverage performance of the network, the coverage performance of the network is enhanced by adopting a repeated transmission mode. For example, fig. 2 illustrates a method of repeating transmission in the time domain, thereby providing performance of uplink coverage. Machine-Type Communication (MTC) and Narrow-Band Internet of Things (NB-IoT) are typical representatives of cellular Internet of Things, and have been widely used in smart cities (e.g., meter reading), smart farming (e.g., collection of information such as temperature and humidity), and smart traffic (e.g., shared vehicles). Since terminals in MTC and NB-IoT are mostly deployed in areas with limited wireless signal propagation such as basements, and due to the hardware capability limitation of the terminals, the coverage capability of the terminals is inferior to that of the conventional Long Term Evolution (LTE) network. Therefore, repeated transmission is adopted in MTC and NB-IoT to accumulate power, thereby achieving coverage enhancement. In short, the repeated transmission means that the same transmission content is transmitted in a plurality of time units. The time unit may be one subframe or a plurality of subframes.

Since the channel condition of the terminal may change, and the channel condition (for example, the channel condition may be reported by the terminal) according to which the base station configures the number of retransmission times of the uplink data for the terminal may be inaccurate, the base station may configure the user with an excessive number of retransmission times. The terminal sends according to the number of repeated transmission configured by the base station, thereby causing the number of repeated transmission to be excessive, and causing waste of channel resources and terminal power. The method of repeating transmission in the time domain results in a low utilization of the spectrum resources. In addition, the method of repeating transmission in the time domain may cause additional time delay.

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

By designing the transmission method of the DMRS, the transmission of the DMRS is dynamically adjustable, so as to improve the coverage performance of the network, which is a feasible technical solution. That is, in the case where the network coverage is limited, the coverage performance of the network is effectively improved by flexibly adjusting the method of DMRS transmission.

The embodiment of the disclosure provides a data transmission method, which is applied to network equipment. Fig. 4 is a flow chart illustrating a method of data transmission according to an example embodiment. Referring to fig. 4, the data transmission method is applied to a network device, and includes the following steps S11 and S12.

In step S11, demodulation reference signal DMRS configuration information is determined, the DMRS configuration information including at least a parameter indicating a time-domain position of a DMRS.

In step S12, DMRS configuration information is transmitted.

In the embodiments of the present disclosure, the time domain position of the DMRS can be dynamically adjusted in a limited network coverage or any suitable situation. Specifically, the network device can determine DMRS configuration information and transmit the DMRS configuration information. Since the DMRS configuration information includes a parameter for indicating a time-domain position of the DMRS, this enables flexible adjustment of DMRS transmission, thereby improving coverage performance of a network.

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

Fig. 5 is a diagram illustrating a DMRS configuration according to an exemplary embodiment. Referring to fig. 5, in the embodiment of the present disclosure, at least one DMRS configuration is preconfigured, for example, N +1 DMRS configurations in fig. 5, i.e., DMRS configuration 0, DMRS configuration 1, DMRS configuration 2, DMRS configuration 3, … DMRS configuration N. These DMRS configurations may be preconfigured, for example, based on data transmission performance simulation and analysis results between the network device and the terminal. It should be noted that these are merely examples for pre-configuring DMRS configurations, and the disclosed embodiments are not so limited.

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

In one embodiment of the present disclosure, each DMRS configuration may indicate 1 DMRS time-domain location. As shown in fig. 5, DMRS configuration 1 and DMRS configuration 2 indicate 1 DMRS time-domain positions, respectively, i.e., one sub-slot in each slot may be selected as a time-domain transmission position of the DMRS, e.g., the 1 st sub-slot in DMRS configuration 1 or the 7 th sub-slot in DMRS configuration 2. Of course, the network device can configure the terminal with one or more DMRS configurations; and when the network device is capable of configuring multiple DMRS configurations for the terminal, the DMRS configurations may or may not be completely different. It should be noted that the number of DMRS time domain positions described above is merely an example illustration, the number of DMRS time domain positions indicated by each DMRS configuration may be preconfigured according to network equipment, terminals, application scenarios, and the like, and the disclosed embodiments are not limited thereto.

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 positions described above is merely an example illustration, the number of DMRS time domain positions indicated by each DMRS configuration may be preconfigured according to network equipment, terminals, application scenarios, and the like, and the disclosed embodiments are not limited thereto.

In one embodiment of the present disclosure, the DMRS configuration information is a bit sequence bitmap, and the bit sequence includes bits for indicating at least one DMRS configuration. In the embodiment of the present disclosure, the bit sequence bitmap is a string of bits, and the length of the bits is not limited.

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

In one embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is fixed or configurable. In one 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 location of the first information field may be determined based on a communication protocol, or may be configured in advance based on a network side device and a terminal, which is not limited in the embodiment of the present disclosure. In this case, DMRS configuration information is indicated by an information field at a fixed position in the first scheduling instruction at each scheduling. In one embodiment of the present disclosure, the position of the first information field in the first scheduling instruction is configurable, i.e., the position of the first information field may not be fixed. In this case, the position of the first information field in the scheduling command may be configured in advance by higher layer signaling or physical layer signaling, and thus the configuration information of the DMRS used for data transmission scheduled in the scheduling command of this time, that is, the transmission position information of the DMRS may be indicated by information in the first information field.

In one embodiment of the present disclosure, the data transmission method further includes: and transmitting first information, wherein the first information is used for indicating that the dynamic adjustment DMRS configuration information is activated or indicating that the dynamic adjustment DMRS configuration information is not activated. In one embodiment of the present disclosure, the data transmission method further includes: transmitting first information indicating activation of one or more of the plurality of DMRS configuration information.

That is, in the embodiment of the present disclosure, the network device can be configured by the first information, and whether the corresponding terminal activates the DMRS configuration information described above. In some possible embodiments, DMRS configuration information can be transmitted to terminals in a broadcast manner, and whether each terminal activates the DMRS configuration information is separately indicated by the first information. This can save signalling overhead. In some possible embodiments, the DMRS configuration information can be transmitted to each terminal in a broadcast manner, and whether each terminal activates the DMRS configuration information is separately indicated by the first information or any other appropriate information. This can save signalling overhead. In some possible embodiments, the plurality of DMRS configuration information may be transmitted to the terminals by broadcasting, and whether each terminal activates the DMRS configuration information may be separately indicated by the first information or any other appropriate information, and one or more of the plurality of DMRS configuration information may be activated. This can save signalling overhead.

Fig. 6 is a flow chart illustrating a method of data transmission according to an example embodiment. Referring to fig. 6, the data transmission method is applied to a network device, and includes the following steps S21 to S23.

In step S21, demodulation reference signal DMRS configuration information is determined, the DMRS configuration information including at least a parameter indicating a time-domain position of a DMRS.

In step S22, DMRS configuration information is transmitted.

In step S23, first information is transmitted, where the first information is used to indicate that dynamic DMRS configuration information is activated or used to indicate that dynamic DMRS configuration information is not activated.

In all embodiments of the present disclosure, the sequence of the foregoing steps S21, S22, and S23 may be adjusted at will. Namely: the step S23 of transmitting the first information for activating or deactivating the dynamic adjustment DMRS configuration information may be performed in any time slot of the method, and is not limited in the embodiment of the present disclosure.

In one embodiment of the present disclosure, the data transmission method further includes: and sending second information, wherein the second information is used for indicating DMRS sequence information corresponding to the time domain position.

Fig. 7 is a flow chart illustrating a method of data transmission according to an example embodiment. Referring to fig. 7, the data transmission method is applied to a network device, and includes the following steps S31 to S33.

In step S31, demodulation reference signal DMRS configuration information is determined, the DMRS configuration information including at least a parameter indicating a time-domain position of a DMRS.

In step S32, DMRS configuration information is transmitted.

In step S33, second information indicating DMRS sequence information corresponding to the time domain position is transmitted.

In all embodiments of the present disclosure, the sequence of the foregoing steps S31, S32, and S33 may be adjusted at will. Namely: the step S33 of sending the second information may be executed at any time slot of the method, which is not limited in the embodiment of the present disclosure. In all 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 disclosed embodiments are not limited thereto. 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, step S23 may be included, and the execution time slot of the included other steps may be any time slot of the foregoing steps S31-S33, and the embodiments of the present disclosure do not limit the execution time slot of each step in the method. The embodiment related to transmitting the second information as described above may be used in conjunction with the aforementioned embodiment related to the parameter of the time domain location of the DMRS. Namely: as described in connection with fig. 7, DMRS configuration information including at least a parameter indicating a time-domain position of a DMRS is determined, the DMRS configuration information is transmitted, and second information indicating DMRS sequence information corresponding to the time-domain position is transmitted. Of course, the embodiments described above with respect to transmitting the second information may also be used independently, i.e., DMRS sequence information is transmitted independently from DMRS time domain position information. The embodiments of the present disclosure are described in conjunction with the foregoing embodiments; of course, those skilled in the art will appreciate that such illustration is not a limitation of the disclosed embodiments.

In one embodiment of the present disclosure, the sending the second information includes: and sending the second information through a second information field in the second scheduling instruction. In all embodiments of the present disclosure, the second information, the first information, and the DMRS configuration information may be carried in the same signaling, may also be partially carried in the same signaling, and may also be completely carried in different signaling; the disclosed embodiments are not limited thereto.

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

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

For example: and when the first bit value is '0', the first bit value is used for indicating that the DMRS in each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction correspond to the same DMRS sequence, and when the first bit value is '1', the first bit value is used for indicating that the DMRS in each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction correspond to different DMRS sequences. Of course, the labels corresponding to the values may be opposite, and are not described herein again.

In one embodiment of the present disclosure, two different bits may be used to indicate the configuration information of the DMRS sequence; that is, the DMRS at each of the DMRS time-domain positions indicated in the second scheduling instruction is indicated by a first bit to correspond to the same DMRS sequence; and indicating that the DMRS on each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction corresponds to different DMRS sequences through a second bit.

In one embodiment of the present disclosure, transmitting DMRS configuration information includes: and transmitting the DMRS configuration information through high-layer signaling or physical layer signaling.

And indicating the sequence information of the DMRS on a fixed or configurable information field in the scheduling instruction, wherein the sequence information represents the indication whether joint channel estimation can be carried out or not. For example, "0" represents that the DMRS at each location uses an independent DMRS sequence, and "1" represents that the DMRS at each location uses the same DMRS sequence. In the case where the scheduling instruction indicates that the DMRS at each position uses the same DMRS sequence, when the scheduling instruction schedules transmission of a plurality of PUSCHs, the DMRS on each PUSCH uses the same DMRS sequence, such as a DMRS sequence decided at a scheduled DMRS transmission position on the first PUSCH that is scheduled. When the scheduling instruction schedules transmission of one PUSCH, DMRSs for PUSCH transmissions scheduled by different scheduling instructions use the same sequence, such as a default DMRS sequence.

In one embodiment of the present disclosure, different terminals have different DMRS configuration information.

The time-domain transmission position of the DMRS is indicated in the DMRS configuration by configuring a terminal-specific DMRS configuration for each terminal. Different terminals may have different configuration tables of DMRSs. Under the condition that the network coverage is limited, the method for transmitting the DMRS can be flexibly adjusted through the method, so that the coverage performance of the network is effectively improved. In some embodiments, the DMRS configuration information corresponding to each terminal is sent through terminal-specific higher layer signaling or physical layer signaling, that is, sent in a unicast manner.

In one embodiment of the present disclosure, the sending the first information includes: the first information is transmitted through a third information field based on higher layer signaling or physical layer signaling.

In one embodiment of the present disclosure, the third information field at least includes a bit having a third value for indicating that the DMRS configuration information is activated; or the third information field at least comprises a bit with a fourth value for indicating that the DMRS configuration information is not activated.

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

In one embodiment of the present disclosure, the above-described dynamic DMRS adjustment mechanism may be activated or deactivated through higher layer signaling or physical layer signaling. For example, whether the above-described dynamic DMRS adjustment mechanism is activated or not activated is indicated on some fixed information field of higher layer signaling or physical layer signaling. In one embodiment of the present disclosure, for example, "0" represents active and "1" represents inactive. The information in the physical layer signaling to detect activation or deactivation may be pre-configured.

Based on the same concept, the embodiment of the disclosure also provides a data transmission method, which is applied to a terminal. Fig. 8 is a flow chart illustrating a method of data transmission according to an example embodiment. Referring to fig. 8, the data transmission method is applied to the terminal, and includes the following step S41.

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

In the embodiments of the present disclosure, the time domain position of the DMRS can be dynamically adjusted in a limited network coverage or any suitable 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 a time-domain position of a DMRS. Since the DMRS configuration information includes a parameter for indicating a time-domain position of the DMRS, this enables flexible adjustment of DMRS transmission, thereby improving coverage performance of a network.

In one embodiment of the present disclosure, the DMRS configuration information includes at least one DMRS configuration for indicating a time-domain position of the DMRS, and each of the at least one DMRS configuration is used to indicate n DMRS time-domain positions; wherein n is a positive integer greater than or equal to 0. Of course, the network device may be able to configure the terminal with one or more DMRS configurations; and when the network device is capable of configuring multiple DMRS configurations for the terminal, the DMRS configurations may or may not be completely different. It should be noted that the number of DMRS time domain positions described above is merely an example illustration, the number of DMRS time domain positions indicated by each DMRS configuration may be preconfigured according to network equipment, terminals, application scenarios, and the like, and the disclosed embodiments are not limited thereto. 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 positions described above is merely an example illustration, the number of DMRS time domain positions indicated by each DMRS configuration may be preconfigured according to network equipment, terminals, application scenarios, and the like, and the disclosed embodiments are not limited thereto.

In one embodiment of the present disclosure, receiving DMRS configuration information includes: and receiving DMRS configuration information through the first scheduling instruction, wherein the DMRS configuration information is carried in a first information domain of the first scheduling instruction, and the first information domain at least comprises a bit value used for indicating the DMRS configuration used by the data transmission scheduled by the first scheduling instruction.

In one 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 an information field at a fixed position in the first scheduling instruction at 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 be non-fixed. In this case, the position of the first information field in the scheduling command may be configured in advance by higher layer signaling or physical layer signaling, and thus the configuration information of the DMRS used for data transmission scheduled in the scheduling command of this time, that is, the transmission position information of the DMRS may be indicated by information in the first information field.

In one embodiment of the present disclosure, the data transmission method further includes: and receiving first information, wherein the first information is used for indicating that the dynamic adjustment DMRS configuration information is activated or not activated.

Fig. 9 is a flow chart illustrating a method of data transmission according to an example embodiment. Referring to fig. 9, the data transmission method is applied to a terminal, and includes the following steps S51 and S52.

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

In step S52, first information is received, where the first information is used to indicate that dynamic DMRS configuration information is activated or used to indicate that dynamic DMRS configuration information is not activated.

In one embodiment of the present disclosure, the data transmission method further includes: receiving first information indicating activation of one or more of the plurality of DMRS configuration information.

In one embodiment of the present disclosure, the data transmission method further includes: and receiving second information, wherein the second information is used for indicating DMRS sequence information corresponding to the time domain position.

Fig. 10 is a flow chart illustrating a method of data transmission according to an example embodiment. Referring to fig. 10, the data transmission method is applied to the terminal, and includes steps S61 and S62 as follows.

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

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

The embodiments related to receiving the second information as described above may be used with the aforementioned embodiments related to the parameter of the time domain location of the DMRS. Namely: as described in connection with fig. 10, DMRS configuration information is received, the DMRS configuration information including at least a configuration for indicating a time-domain position of a DMRS, and second information for indicating DMRS sequence information corresponding to the time-domain position is received. Of course, the embodiments described above with respect to receiving the second information may also be used independently, i.e., receiving DMRS sequence information independently of DMRS time domain position information. The embodiments of the present disclosure are described in conjunction with the foregoing embodiments; of course, those skilled in the art will appreciate that such illustration is not a limitation of the disclosed embodiments.

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

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

For example: and when the first bit value is '0', the first bit value is used for indicating that the DMRS in each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction correspond to the same DMRS sequence, and when the first bit value is '1', the first bit value is used for indicating that the DMRS in each DMRS time domain position in the DMRS time domain positions indicated in the second scheduling instruction correspond to different DMRS sequences. Of course, the labels corresponding to the values may be reversed, and are not described in detail herein.

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

In one embodiment of the present disclosure, transmitting DMRS configuration information includes: and receiving the DMRS configuration information through high-layer signaling or physical layer signaling.

In one embodiment of the present disclosure, receiving first information includes: the first information is received through a third information field based on higher layer signaling or physical layer signaling.

In one embodiment of the present disclosure, the third information field at least includes a bit with a third value for indicating activation of DMRS configuration information; or the third information field at least comprises a bit with a fourth value for indicating that the DMRS configuration information is not activated.

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

Based on the same conception, the embodiment of the disclosure also provides a data transmission device, which is applied to network equipment. Fig. 11 is a block diagram illustrating a data transmission apparatus according to an example embodiment. Referring to fig. 11, a data transmission apparatus 100 is applied to a network device, and includes a determination unit 101 and a transmission unit 102.

The determining unit 101 is configured to determine demodulation reference signal, DMRS, configuration information, which at least comprises a configuration for indicating a time domain position of a DMRS. The transmitting unit 102 is configured to transmit DMRS configuration information.

In one embodiment of the present disclosure, the transmitting unit 102 is further configured to: and sending the DMRS configuration information through the first scheduling instruction, wherein the DMRS configuration information is carried in a first information domain of the first scheduling instruction, and the first information domain at least comprises a bit value used for indicating the DMRS configuration used by the data transmission scheduled by the first scheduling instruction.

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

In one embodiment of the present disclosure, the transmitting unit 102 is further configured to: and transmitting first information, wherein the first information is used for indicating that the dynamic adjustment DMRS configuration information is activated or not activated.

In one embodiment of the present disclosure, the transmitting unit 102 is further configured to: and sending second information, wherein the second information is used for indicating DMRS sequence information corresponding to the time domain position.

In one embodiment of the present disclosure, the transmitting unit 102 is further configured to: and sending the second information through a second information field in the second scheduling instruction.

In one embodiment of the present disclosure, the transmitting unit 102 is further configured to: and transmitting the DMRS configuration information through high-layer signaling or physical layer signaling.

In one embodiment of the present disclosure, different terminals should have different DMRS configuration information.

In one embodiment of the present disclosure, the transmitting unit 102 is further configured to: the first information is transmitted through a third information field based on higher layer signaling or physical layer signaling.

It is understood that the data transmission device provided by the embodiment of the present disclosure includes a hardware structure and/or a software module for performing the above functions. The disclosed embodiments can be implemented in hardware or a combination of hardware and computer software, in combination with the exemplary elements and algorithm steps disclosed in the disclosed embodiments. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Based on the same conception, the embodiment of the disclosure also provides a data transmission device, which is applied to a terminal. Fig. 12 is a block diagram illustrating a data transmission device according to an example 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, which includes at least a configuration for indicating a time-domain position of a DMRS.

In one embodiment of the present disclosure, the receiving unit 201 is further configured to: and receiving DMRS configuration information through the first scheduling instruction, wherein the DMRS configuration information is carried in a first information domain of the first scheduling instruction, and the first information domain at least comprises a bit value used for indicating the DMRS configuration used by the data transmission scheduled by the first scheduling instruction.

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

In one embodiment of the present disclosure, the receiving unit 201 is further configured to: and receiving first information, wherein the first information is used for indicating that the dynamic adjustment DMRS configuration information is activated or not activated.

In one embodiment of the present disclosure, the receiving unit 201 is further configured to: and receiving second information, wherein the second information is used for indicating DMRS sequence information corresponding to the time domain position.

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

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

Fig. 13 is a block diagram illustrating a data transmission device according to an example 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 one embodiment of the present disclosure, the receiving unit 201 is further configured to: and receiving the DMRS configuration information through high-layer signaling or physical layer signaling.

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

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Based on the same concept, the embodiment of the present disclosure further provides a communication system, including: the data transmission apparatus 100 applied to the network device; and a data transmission apparatus 200 applied to the terminal. The functions of the data transmission device 100 and the data transmission device 200 can be referred to the detailed description of the above embodiments.

Fig. 14 is a block diagram illustrating an apparatus 300 for data transmission in accordance with an example 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, or the like.

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

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

The memory 304 is configured to store various types of data to support operations at the apparatus 300. Examples of such data include instructions for any application or method operating on the device 300, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 304 may be implemented by any type or combination of volatile or non-volatile storage devices, 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 disks.

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

The multimedia component 308 includes a screen that provides an output interface between the device 300 and a 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 300 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 310 is configured to output and/or input audio signals. For example, audio component 310 includes a Microphone (MIC) configured to receive external audio signals when apparatus 300 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 304 or transmitted via the 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 peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 314 includes one or more sensors for providing various aspects of status assessment for the device 300. For example, sensor assembly 314 may detect an open/closed state of device 300, the relative positioning of components, such as a display and keypad of device 300, the change in position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration/deceleration of device 300, and the change in temperature of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The 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.

The communication component 316 is configured to facilitate communications between the apparatus 300 and other devices in a wired or wireless manner. The device 300 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communications. 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, the apparatus 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

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

Fig. 15 is a block diagram illustrating an apparatus 400 for data transmission in accordance with an example embodiment. The apparatus 400 may be a network device. Referring to fig. 15, apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources, represented by memory 432, for storing instructions, such as applications, that are executable by processing component 422. The application programs stored in memory 432 may include one or more modules that each correspond to a set of instructions. Further, the processing component 422 is configured to execute instructions to perform the above-described methods.

The apparatus 400 may further comprise: a power component 426 configured to perform power management of the apparatus 400; a wired or wireless network interface 450 configured to connect the apparatus 400 to a network; and an input/output (I/O) interface 458. The apparatus 400 may operate based on an operating system, such as Windows Server, stored in the memory 432 ^TM 、Mac OS X ^TM 、Unix ^TM 、Linux ^TM 、FreeBSD ^TM Or the like.

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

It is understood that "plurality" in this disclosure means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will be further understood that the terms "first," "second," and the like are used to describe various information and that such information should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.

It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain scenarios, multitasking and parallel processing may be advantageous.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the 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

1. A data transmission method is applied to network equipment, and is characterized in that the data transmission method comprises the following steps:

determining demodulation reference signal (DMRS) configuration information, wherein the DMRS configuration information at least comprises a parameter for indicating the time domain position of the DMRS;

transmitting the DMRS configuration information;

and sending second information, wherein the second information is used for indicating the DMRS sequence information corresponding to the time domain position, and the DMRS sequence information represents an indication whether joint channel estimation can be carried out.

2. The data transmission method according to claim 1, wherein the DMRS configuration information includes at least one DMRS configuration for indicating time-domain positions of DMRSs, and each of the at least one DMRS configuration is used to indicate n DMRS time-domain positions;

wherein n is a positive integer greater than or equal to 0.

3. The method of data transmission according to claim 2, wherein the DMRS configuration information is a bit sequence comprising bits for indicating the at least one DMRS configuration.

4. The method for data transmission according to claim 3, wherein the sending of the DMRS configuration information comprises:

and 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 first information field at least comprises a bit value used for indicating the DMRS configuration used for the data transmission scheduled by the first scheduling instruction.

5. 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.

6. The data transmission method according to any one of claims 1 to 5, characterized in that the data transmission method further comprises:

and sending first information, wherein the first information is used for indicating that the dynamic adjustment of the DMRS configuration information is activated or indicating that the dynamic adjustment of the DMRS configuration information is not activated.

7. The data transmission method of claim 1, wherein the sending the second information comprises:

and sending the second information through a second information field in a second scheduling instruction.

8. The data transmission method of claim 7, wherein the second information field comprises at least a first identifier indicating that the DMRS at each of the DMRS time domain positions indicated in the second scheduling instruction corresponds to a different DMRS sequence.

9. The data transmission method of claim 7, wherein the second information field comprises at least a first identifier indicating that the DMRS at each of the DMRS time domain positions indicated in the second scheduling instruction correspond to the same DMRS sequence.

10. The data transmission method according to claim 1, wherein the transmitting the DMRS configuration information includes:

And transmitting the DMRS configuration information through high-layer signaling or physical layer signaling.

11. The data transmission method according to claim 1, wherein different terminals have different DMRS configuration information.

12. A data transmission method is applied to a terminal, and the data transmission method comprises the following steps:

receiving demodulation reference signal (DMRS) configuration information, wherein the DMRS configuration information at least comprises a parameter for indicating the time domain position of the DMRS;

and receiving second information, wherein the second information is used for indicating DMRS sequence information corresponding to the time domain position, and the DMRS sequence information represents an indication whether joint channel estimation can be carried out.

13. The data transmission method of claim 12, wherein the DMRS configuration information at least includes at least one DMRS configuration for indicating time-domain positions of DMRSs, and wherein each of the at least one DMRS configuration is used to indicate n DMRS time-domain positions;

wherein n is a positive integer greater than or equal to 0.

14. The data transmission method of claim 12, wherein the DMRS configuration information is a bit sequence comprising bits used to indicate the at least one DMRS configuration.

15. The method for data transmission according to claim 14, wherein the receiving the DMRS configuration information comprises:

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 first information field at least comprises a bit value used for indicating the DMRS configuration used for data transmission scheduled by the first scheduling instruction.

16. The data transmission method according to claim 15, wherein the position of the first information field in the first scheduling instruction is fixed or configurable.

17. The data transmission method according to any one of claims 12 to 16, characterized in that the data transmission method further comprises:

receiving first information, wherein the first information is used for indicating that the dynamic adjustment of the DMRS configuration information is activated or indicating that the dynamic adjustment of the DMRS configuration information is not activated.

18. The data transmission method of claim 12, wherein the receiving the second information comprises:

and receiving the second information through a second information field in a second scheduling instruction.

19. The data transmission method of claim 18, wherein the second information field comprises at least a first identifier indicating that the DMRS at each of the DMRS time-domain positions indicated in the second scheduling instruction corresponds to a different DMRS sequence.

20. The data transmission method of claim 18, wherein the second information field comprises at least a first identifier indicating that the DMRS at each of the DMRS time-domain positions indicated in the second scheduling instruction corresponds to the same DMRS sequence.

21. The data transmission method of claim 20, wherein the data transmission method further comprises:

and performing joint channel estimation based on the same DMRS sequence.

22. The data transmission method of claim 21, wherein the receiving the DMRS configuration information comprises:

and receiving the DMRS configuration information through high-layer signaling or physical layer signaling.

23. A data transmission apparatus, applied to a network device, the data transmission apparatus comprising:

a determining unit configured to determine demodulation reference signal, DMRS, configuration information including at least a parameter indicating a time-domain position of a DMRS;

and a transmitting unit configured to transmit the DMRS configuration information and transmit second information, where the second information is used to indicate DMRS sequence information corresponding to the time-domain location, and the DMRS sequence information represents an indication of whether joint channel estimation is possible.

24. A data transmission apparatus, applied to a terminal, the data transmission apparatus comprising:

the device comprises a receiving unit and a processing unit, wherein the receiving unit is configured to receive demodulation reference signal (DMRS) configuration information, the DMRS configuration information at least comprises a parameter used for indicating a time domain position of a DMRS, and receive second information, the second information is used for indicating DMRS sequence information corresponding to the time domain position, and the DMRS sequence information represents an indication whether joint channel estimation can be carried out or not.

25. A data transmission apparatus, applied to a network device, the data transmission apparatus comprising:

a processor;

a memory for storing processor-executable instructions,

wherein the processor is configured to: performing the data transmission method according to any of claims 1-11.

26. A non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a network device, enable the network device to perform the data transmission method of any one of claims 1-11.

27. A data transmission apparatus, applied to a terminal, the data transmission apparatus comprising:

a processor;

A memory for storing processor-executable instructions,

wherein the processor is configured to: performing the data transmission method according to any of claims 12-22.

28. A non-transitory computer readable storage medium, instructions in which, when executed by a processor of a terminal, enable the terminal to perform the data transmission method of any one of claims 12-22.