CN111869140B

CN111869140B - Communication method, terminal equipment and network equipment

Info

Publication number: CN111869140B
Application number: CN201880091383.4A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-09-11
Filing date: 2018-09-11
Publication date: 2022-01-25
Anticipated expiration: 2038-09-11
Also published as: TW202015450A; CN111869140A; WO2020051774A1

Abstract

The embodiment of the application relates to a communication method, terminal equipment and network equipment, wherein the method comprises the following steps: a first terminal device receives Downlink Control Information (DCI) sent by a network device, wherein the DCI is used for indicating a configuration parameter of a demodulation reference signal (DMRS), the configuration parameter of the DMRS comprises at least one of the type of the DMRS, a pattern used for at least one terminal device to transmit the DMRS and a resource overhead used for at least one terminal device to transmit the DMRS, and the at least one terminal device comprises the first terminal device; based on the configuration parameters of the DMRS, the first terminal device transmits the DMRS to a network device. The communication method, the terminal device and the network device can reduce resource overhead of the DMRS and support the DMRS orthogonality of more users.

Description

Communication method, terminal equipment and network equipment

Technical Field

The present application relates to the field of communications, and in particular, to a communication method, a terminal device, and a network device.

Background

New Radio (NR) systems introduce Ultra-Reliable and Low-Latency Communications (URLLC), which is characterized by Ultra-high reliability (e.g., 99.999%) transmissions within an extreme time delay (e.g., 1 ms). To achieve this goal, a schedule free (Grant free) concept is proposed.

The scheduling-free may adopt a pre-configured Resource configuration manner, for example, a Radio Resource Control (RRC) signaling may be adopted to configure the Resource. The terminal device may transmit on the configured resource according to the service requirement. The technology avoids the processes of resource Request (SR) and Buffer Status Report (BSR), thereby increasing the effective transmission time of the terminal equipment.

However, in the scheduling-free transmission, the number of terminal devices is variable, and a Demodulation Reference Signal (DMRS) resource in the scheduling-free resource configured by RRC signaling cannot be matched with the number of terminal devices at all times. In addition, DMRS plays a role in user identification in addition to channel estimation. Therefore, it is very necessary to guarantee DMRS orthogonality. But the larger the number of orthogonal DMRSs, the more time-frequency resources are required.

Therefore, how to reduce the resource overhead of the DMRSs and support DMRS orthogonality of more users is an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a communication method, terminal equipment and network equipment, which can reduce the resource overhead of DMRS and support the DMRS orthogonality of more users.

In a first aspect, a communication method is provided, the method including: a first terminal device receives Downlink Control Information (DCI) sent by a network device, wherein the DCI is used for indicating configuration parameters of demodulation reference signals (DMRS), the configuration parameters of the DMRS comprise at least one of the type of the DMRS, a pattern used for at least one terminal device to transmit the DMRS and resource overhead used for at least one terminal device to transmit the DMRS, and the at least one terminal device comprises the first terminal device;

and the first terminal equipment transmits the DMRS to the network equipment based on the configuration parameters of the DMRS.

In a second aspect, a communication method is provided, the method comprising: the method comprises the steps that network equipment sends Downlink Control Information (DCI) to first terminal equipment, wherein the DCI is used for indicating configuration parameters of demodulation reference signals (DMRS), the configuration parameters of the DMRS comprise at least one of the type of the DMRS, a pattern used for at least one terminal equipment to transmit the DMRS and resource overhead used for at least one terminal equipment to transmit the DMRS, and the at least one terminal equipment comprises the first terminal equipment;

and based on the configuration parameters of the DMRS, the network equipment receives the DMRS sent by the first terminal equipment.

In a third aspect, a terminal device is provided, configured to perform the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device includes a functional module for executing the method in the first aspect or each implementation manner thereof.

In a fourth aspect, a network device is provided for performing the method of the second aspect or its implementation manners.

In particular, the network device comprises functional modules for performing the methods of the second aspect or its implementations described above.

In a fifth aspect, a terminal device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method in the first aspect or each implementation manner thereof.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory, and executing the method of the second aspect or each implementation mode thereof.

In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or its implementation manners.

Specifically, the chip includes: a processor configured to call and run the computer program from the memory, so that the device on which the chip is installed performs the method in any one of the first aspect to the second aspect or the implementation manners thereof.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, the computer program causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions to cause a computer to perform the method of any one of the first to second aspects or implementations thereof.

A tenth aspect provides a computer program that, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

According to the technical scheme, the configuration parameters of the DMRS can be adjusted in real time based on the number of the terminal devices by dynamically configuring the configuration parameters of the DMRS, so that the configuration parameters of the DMRS can be matched with the number of the terminal devices in real time, the problems that more DMRS resources are configured when the number of the terminal devices is small or less DMRS resources are configured when the number of the terminal devices is large are solved, and the DMRS ports of more users can be supported to be orthogonal while the resource overhead of the DMRS is reduced.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 3 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 4 is a schematic diagram for dynamically adjusting the maximum number of ports supported by a DMRS according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 6 is a schematic block diagram of a network device according to an embodiment of the present application.

Fig. 7 is a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of a chip according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, or a 5G System.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. Optionally, the Network device 110 may be a Base Transceiver Station (BTS) in a GSM system or a CDMA system, a Base Station (NodeB, NB) in a WCDMA system, an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or may be a Network device in a Mobile switching center, a relay Station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a Public Land Mobile Network (PLMN) for future evolution, or the like.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wireline, such as Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal device arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal device arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. Terminal Equipment may refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminal devices 120.

Alternatively, the 5G system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminal devices, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal device 120 having a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above and are not described herein again; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

Currently, there are two types of allocation methods for scheduling-free resources, Type (Type)1 and Type 2. It should be understood that the Type1 configuration may also be referred to as a semi-static configuration.

And the Type1 adopts RRC signaling configuration to avoid scheduling resources. The scheduling-free resource configured by the RRC signaling may include at least time-frequency domain resource of uplink data, reference signal information (such as port number and type of a reference signal), modulation and coding scheme of the uplink data, and power control parameter of the uplink data.

Alternatively, in the embodiment of the present application, the Reference Signal may be, but is not limited to, a Demodulation Reference Signal (DMRS).

And the Type2 configures scheduling-free resources in a mode of combining RRC signaling and physical layer signaling. The RRC signaling may at least configure time domain resources of uplink data, types of reference signals, power control parameters of the uplink data, and the like; the physical layer signaling may at least configure the frequency domain resource of the uplink data, the port number of the reference signal, the modulation and coding scheme of the uplink data, and the like.

As can be seen, DMRS resources (types of DMRSs) are semi-statically configured, but the number of terminal devices transmitting DMRS at the same time is dynamically changed, so the DMRS resources cannot be matched with the number of terminal devices transmitting DMRS at the same time. In addition, DMRS plays a role in user identification in addition to channel estimation, and thus, it is very necessary to ensure DMRS orthogonality. But the larger the number of orthogonal DMRSs, the more time-frequency resources are required.

For example, at the present time, 5 terminal devices transmit DMRSs to a network device, which are respectively terminal device 1, terminal device 2, terminal device 3, terminal device 4, and terminal device 5, and a resource configured for the DMRSs by the network device supports orthogonality of 3 DMRS ports. In this case, terminal device 1 and terminal device 2 share DMRS port #1, terminal device 3 and terminal device 4 share DMRS port #2, and terminal device 5 employs DMRS port # 3. At this time, the network device cannot detect and recognize the terminal device 1, the terminal device 2, the terminal device 3, and the terminal device 4.

For another example, at the present time, terminal device 1 and terminal device 2 transmit DMRSs to the network device, and the network device supports 4 DMRS ports to be orthogonal for the resources configured for the DMRSs. In this case, terminal device 1 employs DMRS port #1, and terminal device 2 employs DMRS port # 2. At this time, the resources corresponding to the DMRS ports #3 and #4 will not transmit DMRSs nor uplink data, which results in waste of resources.

Therefore, how to reduce the resource overhead of the DMRS and support the DMRS ports with more users to be orthogonal is an urgent problem to be solved.

In view of this, the embodiment of the present application provides a communication method, which can implement real-time adjustment of DMRS configuration parameters based on the number of terminal devices that transmit DMRSs at the same time by dynamically configuring the DMRS configuration parameters, thereby reducing DMRS resource overhead and supporting DMRS port orthogonality of more users.

Fig. 2 is a schematic flow chart diagram of a communication method 200 according to an embodiment of the present application. The method 200 may be performed by a terminal device and may include at least some of the following.

In 210, the first terminal device receives Downlink Control Information (DCI) sent by the network device.

The DCI may be used to indicate a configuration parameter of the DMRS, and the configuration parameter of the DMRS may include, but is not limited to, at least one of a type of the DMRS, a pattern for transmission of the DMRS by at least one terminal device, and a resource overhead for transmission of the DMRS by the at least one terminal device, where the at least one terminal device includes the first terminal device.

It should be understood that, in the embodiment of the present application, besides that DCI may be used to indicate a configuration parameter of a DMRS, other dynamic signaling may also indicate the configuration parameter of the DMRS, which is not limited in this embodiment of the present application.

It should also be understood that, in the embodiment of the present application, the first terminal device may also be referred to as a terminal device or other names, which is not limited in this embodiment of the present application.

At 220, the first terminal device transmits the DMRS to the network device based on the DMRS configuration parameters.

Fig. 3 is a schematic flow chart diagram of a communication method 300 according to an embodiment of the present application. The method 300 may be performed by a network device and may include at least some of the following.

In 310, a network device transmits DCI to a first terminal device, where the DCI may be used to indicate configuration parameters of DMRS, and the configuration parameters of DMRS may include at least one of a type of DMRS, a pattern used by at least one terminal device to transmit DMRS, and a resource overhead used by the at least one terminal device to transmit DMRS, and the at least one terminal device includes the first terminal device.

At 320, the network device receives the DMRS transmitted by the first terminal device based on the DMRS configuration parameters.

The communication method of the embodiment of the present application will be further described below with reference to fig. 2 and 3. It is to be understood that what is described below applies to both method 200 and method 300.

Optionally, the pattern of the DMRS may be used to indicate a distribution of resources occupied by the DMRS in the entire system resources. For example, among 144 Resource Elements (REs), the resources occupied by the DMRS are located at which positions.

Alternatively, the pattern of the DMRS may relate to a channel state between the network device and a terminal device that transmits the DMRS to the network device. The channel state may include a path loss, a multipath delay, and the like of the channel. For example, if the channel state is poor, the resources corresponding to the DMRS pattern are more, so as to improve the effect of channel estimation or channel measurement; if the channel state is better, the resources corresponding to the patterns of the DMRS are fewer, so that the resources are saved.

Alternatively, the type of the DMRS may indicate a pattern of the DMRS. That is, the first terminal device and the network device may determine the pattern of the DMRS by the type of the DMRS.

Of course, the type of the DMRS may indicate a multiplexing scheme of the DMRS on the occupied resource, in addition to the pattern of the DMRS. For example, the DMRS uses Frequency Division Multiplexing (FDM) or Time Division Multiplexing (TDM) or Code Division Multiplexing (CDM) on the occupied resources.

Alternatively, the resource overhead of the DRMS may indicate the number of REs occupied by the DRMS. If the DRMS occupies 8 REs, the resource overhead of the DRMS is 8 REs.

Optionally, in this embodiment of the present application, when the type of the DMRS and/or the pattern of the DMRS are included in the DCI, the first terminal device may determine the resource overhead of the DMRS according to the type of the DRMS and/or the pattern of the DRMS.

As an example, the type of the DMRS may correspond to a resource overhead of the DMRS. After the first terminal device receives the type of the DMRS, the resource overhead of the DMRS may be determined according to the correspondence between the type of the DMRS and the resource overhead of the DMRS and the type of the DMRS.

Optionally, the type of the DMRS and the resource overhead of the DMRS may be in a one-to-one correspondence. That is, one DMRS type may correspond to the resource overhead of one DMRS, and another DMRS type may correspond to the resource overhead of another DMRS.

Optionally, the corresponding relationship between the type of the DMRS and the resource overhead of the DMRS may be preconfigured on the first terminal device, or may be sent to the first terminal device by the network device, which is not limited in this embodiment of the application.

Of course, the network device may also determine the resource overhead of the DMRS according to the type of the DRMS and/or the pattern of the DRMS. The network device determines the implementation manner of the resource overhead of the DMRS according to the type of the DRMS and/or the pattern of the DRMS, and the network device may determine the implementation manner of the resource overhead of the DMRS according to the type of the DRMS and/or the pattern of the DRMS with reference to the terminal device, which is not described in more detail.

It should be noted that, in the embodiment of the present application, the pattern of the DMRS and the resource overhead of the DMRS are pattern and resource overhead of at least one terminal device that transmits the DMRS to the network device. For example, at the present time, 4 terminal devices transmit the DMRS to the network device, where each terminal device occupies 2 REs to transmit the DMRS, and then the resource overhead of the DMRS is 8 REs.

The above mentioned types of DRMS, patterns of DRMS and resource overhead of DRMS are related to the number of ports of DRMS. It should be understood that the port number of the DMRS mentioned in the embodiment of the present application may be understood as the maximum port number supported by the DMRS.

Optionally, if the types of the DMRSs are different, the number of ports of the DMRSs is different; if the DRMS patterns are different, the port numbers of the DMRS are different; and if the resource overhead of the DRMS is different, the port number of the DMRS is different.

For example, if the resource overhead of the DMRS is 8 REs, the number of ports of the DMRS is 8. If the resource overhead of the DMRS is 2 REs, the number of ports of the DMRS is 2.

For another example, if the Type of the DMRS is Type1, the number of ports of the DMRS is 8; if the Type of the DMRS is Type2, the number of ports of the DMRS is 12.

Optionally, the network device may determine, according to the number of ports of the DMRS, the maximum number of terminal devices that transmit the DMRS using the DMRS resource at the same time. Wherein, terminal devices transmitting the DMRS at the same time are orthogonal.

For example, if the number of ports of the DMRS is 4, the network device may determine that there may be 4 orthogonal terminal devices transmitting the DMRS at the same time.

It should be understood that in the embodiments of the present application, the terminal device may transmit the DMRS using at least one DRMS port. The port number of the DRMS used by the terminal device may be related to a radio frequency antenna of the terminal device. For example, if the terminal device has 2 rf antennas, the terminal device may use 2 DRMS ports; if the terminal device has 4 rf antennas, the terminal device may use 4 ports of DRMS.

For convenience of understanding, in the embodiments of the present application, 1 DMRS port may be used for each terminal device, but the embodiments of the present application are not limited thereto.

In this embodiment, DCI sent by a network device to a first terminal device is used to indicate a configuration parameter of a DMRS. In one possible case, the DCI indicates the configuration parameters of the DMRS, which may be understood as: the DCI display indicates configuration parameters of the DMRS.

Optionally, the DCI may include at least one of a type of the DMRS, a pattern of the DMRS, and a resource overhead of the DMRS.

In another possible case, the DCI indicates the configuration parameters of the DMRS, which may be understood as: the DCI implicitly indicates configuration parameters of the DMRS.

Alternatively, the DCI may indicate a configuration parameter of the DMRS by indicating other parameters. After the first terminal device receives the DCI, the configuration parameters of the DMRS may be determined by using other parameters.

Illustratively, the other parameter indicated by the DCI may be a DMRS resource. After receiving the DCI, the first terminal device may determine the configuration parameter of the DMRS according to the resource of the DMRS.

Still another exemplary parameter indicated by the DCI may be a port number of the DMRS. After the first terminal device receives the DCI, the configuration parameters of the DMRS may be determined according to the port number of the DMRS. For example, the DCI indicates DMRS port #1, DMRS port #2, DMRS port #3, and DMRS port #4, the first terminal device may determine that the maximum port number supported by the DMRS is 4, so that the configuration parameter of the DMRS may be determined, for example, the first terminal device may determine that the resource overhead of the DMRS is 4 REs.

In the embodiment of the application, the DCI may indicate, in addition to the configuration parameter of the DMRS, a port number of the DMRS used by the first terminal device and/or a resource location where the DMRS is transmitted by the first terminal device.

It should be understood that the port number indicating the DMRS used by the first terminal device and/or the DCI indicating the resource location where the first terminal device transmits the DMRS may be the same as or different from the DCI indicating the configuration parameter of the DMRS, and this is not specifically limited in this embodiment of the application.

Further, based on the configuration parameter of the DMRS, the transmitting, by the first terminal device, the DMRS to the network device may include: and the first terminal equipment transmits the DMRS to the network equipment based on the configuration parameters of the DMRS and the port number of the DMRS and/or the resource position of the first terminal equipment for transmitting the DMRS.

At this time, there are three cases:

in case 1, the first terminal device may transmit the DMRS to the network device based on the configuration parameter of the DMRS and the port number of the DMRS.

For example, the first terminal device may transmit the DMRS to the network device based on the resource overhead of the DMRS and the port number of the DMRS.

In case 2, the first terminal device may transmit the DMRS to the network device based on the configuration parameter of the DMRS and a resource location where the first terminal device transmits the DMRS.

In case 3, the first terminal device may transmit the DMRS to the network device based on the configuration parameter of the DMRS, the port number of the DMRS, and the resource location where the first terminal device transmits the DMRS.

It should be noted that the term "and/or" is only one kind of association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone.

Optionally, the method according to the embodiment of the present application may further include: the network device sends RRC signaling to the first terminal device. Accordingly, the first terminal device may receive the RRC signaling.

As a possible embodiment, RRC signaling may be used to indicate time domain resources of uplink data and/or power control parameters of uplink data. At this time, the first terminal device may send the uplink data to the network device based on the time domain resource of the uplink data and/or the power control parameter of the uplink data indicated by the RRC signaling.

Further, the network device may transmit a first DCI to the first terminal device, the first DCI may be used to indicate all configuration parameters of the DMRS. When the number of terminal devices that transmit DMRS at the same time changes, the network device may transmit a second DCI to the first terminal device, where the second DCI may be used to indicate all configuration parameters of the DMRS after the number of terminal devices that transmit DMRS at the same time changes.

The first DCI may be configured to activate a time domain resource of uplink data and/or a power control parameter of the uplink data configured semi-statically through RRC signaling. That is, after the first terminal device receives the first DCI, the time domain resource of the uplink data and/or the power control parameter of the uplink data start to take effect.

It should be noted that, in most cases, all terminal devices do not transmit DMRSs at the same time, and only one or two terminal devices may transmit DMRSs at a certain time. If a network device allocates 4 or 12 DMRS ports to one or two terminal devices, the DMRS resource overhead may increase. Therefore, the number of ports of the DMRS corresponding to the configuration parameter of the DMRS indicated by the first DCI may be smaller than the number of terminal devices at the current time. When the number of terminal devices transmitting the DMRS at the same time increases, the network device may dynamically adjust the number of ports of the DMRS.

For example, if the network device detects that there are 8 terminal devices at the current time, the first DCI sent by the network device to the first terminal device may indicate the configuration parameter of the DMRS corresponding to the DMRS having the port number of 2. At a certain time, 8 terminal devices simultaneously transmit DMRSs, and then the network device may configure 8 DMRS ports. Then, the network device sends a second DCI to the first terminal device, where the second DCI may be used to indicate a configuration parameter of the DMRS corresponding to a DMRS with a port number of 8.

The method for configuring, by the network device, the number of ports of the DMRS corresponding to the configuration parameter of the DMRS indicated by the first DCI may be various, and this is not limited in this embodiment of the application. For example, the network device may count the number of terminal devices that transmit the DMRS simultaneously at each time among a plurality of previous time instants, and then calculate an average of the number of terminal devices that transmit the DMRS simultaneously at different time instants, so that the average may be determined as the number of ports of the DMRS corresponding to the configuration parameter of the DMRS indicated by the first DCI.

For another example, the network device may determine, according to a channel state between the network device and the terminal device at the current time, the number of ports of the DMRS corresponding to the configuration parameter of the DMRS indicated by the first DCI. If the channel state between the network equipment and the terminal equipment at the current moment is good, the network equipment can be configured with less ports of the DMRS, for example, 2 DMRS ports are configured; if the channel state between the network device and the terminal device at the current moment is poor, the network device may configure more ports of the DMRS, for example, configure 4 DMRS ports.

It should be understood that the specific examples in the embodiments of the present application are for the purpose of promoting a better understanding of the embodiments of the invention, and are not intended to limit the scope of the embodiments of the present application.

It should also be understood that "first" and "second" in the embodiments of the present application are merely for distinguishing different objects, and do not limit the scope of the embodiments of the present application.

As another possible embodiment, the RRC signaling may be used to indicate a partial configuration parameter of the DMRS in addition to the time domain resource of the uplink data and/or the power control parameter of the uplink data, and the DCI indicates another partial configuration parameter of the DMRS.

The RRC signaling specifically indicates which configuration parameters of the DMRS, which is not limited in this embodiment of the application. For example, the resource overhead of DMRS may be indicated in RRC signaling.

It should be understood that, for implementation of the partial configuration parameter indicating the DMRS by RRC signaling and the other partial configuration parameter indicating the DMRS by DCI, all the configuration parameters indicating the DMRS by DCI may be referred to, and details are not repeated here for brevity of content.

When the number of terminal devices transmitting DMRS at the same time increases, the network device may transmit DCI only to terminal devices using the same DMRS port to instruct the terminal devices using the same DMRS port to transmit DMRS using other DMRS ports, as an example.

For example, 2 terminal devices transmit DMRSs to the network device at the last time, 3 terminal devices transmit DMRSs at the current time, only 2 DMRS ports configured by the network device are provided, terminal device 1 uses DMRS port #1, and terminal device 2 and terminal device 3 use DMRS port # 2. The network device may change the configuration parameters of the DMRS, extend the number of ports of the DMRS to 3, and then transmit DCI to the terminal device 3 to instruct the terminal device 3 to transmit the DMRS using DMRS port # 3.

As another example, the network device may transmit DCI to all terminal devices transmitting DMRS at the current time to instruct all terminal devices transmitting DMRS at the current time to transmit DMRS on other resources.

For example, at the last time, 8 terminal devices transmit the DMRS to the network device, and the 8 terminal devices transmit the DMRS using the DMRS resource with the Type of Type 1. The number of terminal devices which transmit the DMRS to the network device at the current time is increased to 12, and then the network device may transmit DCI to the 12 terminal devices to instruct the 12 terminal devices to transmit the DMRS to the network device using the DMRS resource of Type 2.

As an example, the DCI may be specific to the first terminal device.

In this case, the DCI may be further used to indicate, but not limited to, at least one of a code domain resource of uplink data, a Modulation and Coding Scheme (MCS) of the uplink data, and a multiple access parameter of the uplink data. The multiple access parameters of the uplink data at least include data multiple access coding parameters.

Further, the method of the embodiment of the present application may further include: the first terminal device may send the uplink data to the network device based on at least one of a code domain resource of the uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

When the DCI is specific to the first terminal device, optionally, the configuration parameters of the DMRS may be carried in any one of the fields in the DCI. I.e., the configuration parameters of the DMRS may reuse any one of the fields in the DCI. Preferably, the configuration parameters of the DMRS may be carried in a field of a Hybrid Automatic Repeat reQuest (HARQ) process number in the DCI.

It should be noted that, when the configuration parameter of the DCI is carried in the field of the HARQ process number in the DCI, the field will no longer indicate the HARQ process number. At this time, the network device and the first terminal device may obtain the HARQ process number through calculation.

As another example, the DCI may be applicable to a plurality of terminal devices. Wherein the plurality of terminal devices may include a first terminal device.

Specifically, if DCI indicating a port number of a DMRS and/or a resource location where the first terminal device transmits the DMRS is different from DCI indicating a configuration parameter of the DMRS, and one DCI has already indicated the port number of the DMRS and/or the resource location where the first terminal device transmits the DMRS, another DCI may indicate the configuration parameter of the DRMS of a plurality of terminal devices using only one domain.

If the DCI indicating the port number of the DMRS and/or the resource location where the first terminal device transmits the DMRS is the same as the DCI indicating the configuration parameter of the DMRS, the DCI may indicate the configuration parameter of the plurality of terminal devices using the plurality of domains, and the port number of the DMRS of each of the plurality of terminal devices and/or the resource location where the first terminal device transmits the DMRS.

When the DCI is applicable to a plurality of terminal devices, the DCI indicating the configuration parameter of the DMRS may not include at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

When the DCI indicating the configuration parameter of the DMRS does not include at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data, in one implementation, at least one of the code domain resource of the uplink data, the modulation and coding scheme of the uplink data, and the multiple access parameter of the uplink data may be configured semi-statically. That is, the network device may send RRC signaling to the first terminal device, where the RRC signaling is used to indicate at least one of a code domain resource of the uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

At this time, the first terminal device may transmit the uplink data to the network device based on at least one of a code domain resource of the uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

In another implementation, at least one of the code domain resource of the uplink data, the modulation and coding scheme of the uplink data, and the multiple access parameter of the uplink data may be dynamically configured.

In this case, optionally, at least one of the code domain resource of the uplink data, the modulation and coding scheme of the uplink data, and the multiple access parameter of the uplink data may be indicated by DCI other than DCI indicating the configuration parameter of the DMRS.

For convenience of understanding, DCI indicating the configuration parameter of the DMRS is referred to as DCI 1, and DCI indicating at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data is referred to as DCI 2. As an example, the first terminal device receives an RRC signaling sent by the network device, where the RRC signaling may be used to indicate parameters such as time domain resources of uplink data and/or power control parameters of the uplink data. Then, the first terminal device receives DCI 2 sent by the network device, where the DCI 2 indicates at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data, and the DCI 2 may activate a time domain resource of the uplink data and/or a power control parameter of the uplink data. Then, the first terminal device may receive DCI 1 sent by the network device, where the DCI 1 may be used to indicate a configuration parameter of the DMRS.

It should be understood that when the DCI is applicable to a plurality of terminal devices, if the number of bits of the DCI is sufficient, the DCI may also be used to indicate other parameters. For example, the identifier of each terminal device in the plurality of terminal devices, and at least one of the time domain resource of the uplink data, the code domain resource of the uplink data, the modulation and coding scheme of the uplink data, and the multiple access parameter of the uplink data, etc., which is not specifically limited in this embodiment of the present application.

Optionally, in this embodiment of the present application, when multiple terminal devices send uplink data to a network device, the uplink data sent by the multiple terminal devices may be orthogonal to each other.

There may be many methods for orthogonality among multiple uplink data, and this is not specifically limited in this embodiment of the present application. Optionally, the uplink data sent by the multiple terminal devices may be Code division multiplexed by using Orthogonal Code (OCC), so that the multiple uplink data are Orthogonal to each other.

Optionally, if the number of ports of the DMRS is greater than or equal to the number of terminal devices supported by the OCC used by the uplink data, the DMRS resource allocated by the network device to the terminal device may support the terminal devices supported by the OCC used by the uplink data to transmit the DMRS and the uplink data.

For example, if the number of ports of the DMRS is 12 and uplink data transmitted by 4 terminal devices are orthogonal to each other, DMRS resources allocated by the network device to the terminal devices may support the 4 terminal devices to simultaneously transmit the DMRS and the uplink data.

According to the technical scheme, the uplink data sent by the terminal equipment are orthogonal, so that the network equipment can correctly demodulate the uplink data after receiving the uplink data.

Optionally, the transmitting, by the first terminal device, the DMRS to the network device based on the configuration parameter of the DMRS may include: in a time period from the current reception of the DCI to the next reception of the DCI, the first terminal device may transmit the DMRS to the network device based on the configuration parameter of the DMRS indicated by the currently received DCI.

In this embodiment, the DCI sent by the network device to the first terminal device indicates that the configuration parameter of the DMRS is one of multiple implementation manners, and in another implementation manner, the DCI may indicate the number of ports of the DMRS.

Specifically, after receiving the DCI, the first terminal device may determine at least one of a type of the DMRS, a pattern of the DMRS, and a resource overhead of the DMRS according to the number of ports of the DMRS. The DMRS may then be transmitted to the network device based on the determined at least one of the type of the DMRS, the pattern of the DMRS, and the resource overhead of the DMRS.

It should be noted that, the foregoing description may be referred to for this implementation, and here, detailed description thereof is omitted to avoid redundancy.

The method of the embodiments of the present application is illustrated below with reference to fig. 4. In fig. 4, different patterns represent different DMRS ports. In the scheduling-free resource 1, the type of the DMRS is type a, as shown in fig. 4, where type a indicates that the DMRS occupies a column of symbols, and may support orthogonality of 4 DMRS ports. In the scheduling-free resource 2, the type of the DMRS is type B, and as shown in fig. 4, type B indicates that the DMRS occupies two columns of symbols, and may support orthogonality of 8 DMRS ports.

At time 1, 4 terminal devices transmit DMRSs to a network device, and the type of the DMRSs configured for the terminal devices by the network device is type a. The terminal device 1 transmits the DMRS through the DMRS port #1, the terminal device 2 transmits the DMRS through the DMRS port #2, the terminal device 3 transmits the DMRS through the DMRS port #3, and the terminal device 4 transmits the DMRS through the DMRS port #4, so that the network device can detect the 4 terminal devices.

At time 2, 8 terminal devices transmit DMRSs to the network device, where terminal device 1 and terminal device 5 transmit DMRSs using DMRS port #1, terminal device 2 and terminal device 6 transmit DMRSs using DMRS port #2, terminal device 3 and terminal device 7 transmit DMRSs using DMRS port #3, and terminal device 4 and terminal device 8 transmit DMRSs using DMRS port # 4. Since every two terminal devices use the same DMRS port, the network device cannot detect the 8 terminal devices.

In this case, the network device may transmit DCI to the 8 terminal devices, instructing the 8 terminal devices to transmit DMRS using scheduling-free resource 2. Terminal equipment 1 adopts DMRS port #1 to send DMRS, terminal equipment 2 adopts DMRS port #2 to send DMRS, 1.

It should be noted that, without conflict, the embodiments and/or technical features in the embodiments described in the present application may be arbitrarily combined with each other, and the technical solutions obtained by combining the embodiments also fall within the scope of the present application.

According to the embodiment of the application, the network equipment can realize real-time adjustment of the configuration parameters of the DMRS based on the number of the terminal equipment by dynamically configuring the configuration parameters of the DMRS, so that the configuration parameters of the DMRS can be matched with the number of the terminal equipment in real time, the problems that more DMRS resources are configured when the terminal equipment is less or less DMRS resources are configured when the terminal equipment is more are solved, and the DMRS ports of more users can be supported to be orthogonal while the resource overhead of the DMRS is reduced.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The communication method according to the embodiment of the present application is described above in detail, and the communication apparatus according to the embodiment of the present application will be described below with reference to fig. 5 to 7, and the technical features described in the method embodiment are applicable to the following apparatus embodiments.

Fig. 5 shows a schematic block diagram of a terminal device 500 of an embodiment of the present application. As shown in fig. 5, the terminal device 500 includes:

a communication unit 510, configured to receive DCI sent by a network device, where the DCI is used to indicate a configuration parameter of a DMRS, and the configuration parameter of the DMRS includes at least one of a type of the DMRS, a pattern used for transmission of the DMRS by at least one terminal device, and a resource overhead used for transmission of the DMRS by the at least one terminal device, where the at least one terminal device includes the terminal device 500;

the communication unit 510 is further configured to transmit the DMRS to the network device based on the configuration parameter of the DMRS.

Optionally, in this embodiment of the present application, the DCI is specific to the terminal device 500.

Optionally, in this embodiment of the present application, the DCI is further configured to indicate at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

Optionally, in this embodiment of the present application, the DCI is applicable to a plurality of terminal devices, where the terminal devices include the terminal device 500.

Optionally, in this embodiment of the present application, the communication unit 510 is further configured to: receiving RRC signaling sent by network equipment, wherein the RRC signaling is used for indicating time domain resources of uplink data and/or power control parameters of the uplink data;

and sending the uplink data to the network equipment based on the time domain resource of the uplink data and/or the power control parameter of the uplink data indicated by the RRC signaling.

Optionally, in this embodiment of the present application, the configuration parameter of the DMRS is carried in a field of a hybrid automatic repeat request HARQ process number in the DCI.

Optionally, in this embodiment of the present application, the DCI is further configured to indicate a port number of the DMRS adopted by the terminal device 500 and/or a resource location where the terminal device 500 sends the DMRS;

the communication unit 510 is specifically configured to: and transmitting the DMRS to the network equipment based on the configuration parameters of the DMRS, and based on the port number of the DMRS and/or the resource position of the terminal equipment 500 for transmitting the DMRS.

It is understood that the terminal device 500 may correspond to the first terminal device in the method 200, and corresponding operations of the first terminal device in the method 200 may be implemented, which are not described herein again for brevity.

Fig. 6 shows a schematic block diagram of a network device 600 of an embodiment of the application. As shown in fig. 6, the network device 600 includes:

a communication unit 610, configured to transmit DCI to a first terminal device, where the DCI is used to indicate a configuration parameter of a DMRS, and the configuration parameter of the DMRS includes at least one of a type of the DMRS, a pattern used for transmission of the DMRS by at least one terminal device, and a resource overhead used for transmission of the DMRS by the at least one terminal device, where the at least one terminal device includes the first terminal device;

the communication unit 610 is further configured to receive the DMRS transmitted by the first terminal device based on the configuration parameter of the DMRS.

Optionally, in this embodiment of the present application, the DCI is specific to the first terminal device.

Optionally, in this embodiment of the present application, the DCI is applicable to a plurality of terminal devices, where the plurality of terminal devices include a first terminal device.

Optionally, in this embodiment of the present application, the communication unit 610 is further configured to: sending RRC signaling to the first terminal equipment, wherein the RRC signaling is used for indicating time domain resources of uplink data and/or power control parameters of the uplink data;

and receiving the uplink data sent by the first terminal equipment based on the time domain resource of the uplink data and/or the power control parameter of the uplink data.

Optionally, in this embodiment of the present application, the configuration parameter of the DMRS is carried in a field of the HARQ process number in the DCI.

Optionally, in this embodiment of the present application, the DCI is further configured to indicate a port number of a DMRS adopted by the first terminal device and/or a resource location where the first terminal device transmits the DMRS;

the communication unit 610 is specifically configured to: and receiving the DMRS sent by the first terminal equipment based on the configuration parameters of the DMRS and the port number of the DMRS and/or the resource position of the first terminal equipment for sending the DMRS.

It should be understood that the network device 600 may correspond to the network device in the method 300, and the corresponding operations of the network device in the method 300 may be implemented, which are not described herein for brevity.

Fig. 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application. The communication device 700 shown in fig. 7 comprises a processor 710, and the processor 710 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 7, the communication device 700 may also include a memory 720. From the memory 720, the processor 710 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 720 may be a separate device from the processor 710, or may be integrated into the processor 710.

Optionally, as shown in fig. 7, the communication device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 730 may include a transmitter and a receiver, among others. The transceiver 730 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 700 may specifically be a network device in the embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 700 may specifically be a terminal device in the embodiment of the present application, and the communication device 700 may implement a corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Fig. 8 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 800 shown in fig. 8 includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 8, chip 800 may further include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, the chip 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 800 may further include an output interface 840. The processor 810 can control the output interface 840 to communicate with other devices or chips, and in particular, can output information or data to other devices or chips.

Optionally, the chip may be applied to the terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

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

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

Fig. 9 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in fig. 9, the communication system 900 includes a terminal device 910 and a network device 920.

The terminal device 910 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 920 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, which is not described herein again.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the terminal device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. 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 application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of communication, the method comprising:

a first terminal device receives Downlink Control Information (DCI) sent by a network device, wherein the DCI is used for indicating configuration parameters of the DMRS of all terminal devices which send demodulation reference signals (DMRS) to the network device at the same time, the configuration parameters of the DMRS comprise at least one of the type of the DMRS, a pattern used for the all terminal devices to transmit the DMRS and resource overhead used for the all terminal devices to transmit the DMRS, and the all terminal devices comprise the first terminal device;

2. The method of claim 1, wherein the DCI is specific to the first terminal device.

3. The method of claim 2, wherein the DCI is further configured to indicate at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

4. The method of claim 2, wherein the configuration parameters for the DMRS are carried in a field of hybrid automatic repeat request (HARQ) process numbers in the DCI.

5. The method of claim 1, wherein the DCI is applicable to a plurality of terminal devices, wherein the plurality of terminal devices comprises the first terminal device.

6. The method according to any one of claims 1 to 5, further comprising:

the first terminal device receives a Radio Resource Control (RRC) signaling sent by the network device, wherein the RRC signaling is used for indicating time domain resources of uplink data and/or power control parameters of the uplink data;

and the first terminal equipment sends the uplink data to the network equipment based on the time domain resource of the uplink data and/or the power control parameter of the uplink data indicated by the RRC signaling.

7. The method according to any of claims 1 to 5, wherein the DCI is further configured to indicate a port number of the DMRS employed by the first terminal device and/or a resource location at which the first terminal device transmits the DMRS;

the first terminal device transmitting the DMRS to the network device based on the configuration parameter of the DMRS includes:

and the first terminal equipment transmits the DMRS to the network equipment based on the configuration parameters of the DMRS and the port number of the DMRS and/or the resource position of the first terminal equipment for transmitting the DMRS.

8. A method of communication, the method comprising:

the method comprises the steps that a network device sends Downlink Control Information (DCI) to a first terminal device, wherein the DCI is used for indicating configuration parameters of the DMRS of all terminal devices which send demodulation reference signals (DMRS) to the network device at the same time, the configuration parameters of the DMRS comprise at least one of the type of the DMRS, a pattern used for the all terminal devices to transmit the DMRS and resource overhead used for the all terminal devices to transmit the DMRS, and the all terminal devices comprise the first terminal device;

9. The method of claim 8, wherein the DCI is specific to the first terminal device.

10. The method of claim 9, wherein the DCI is further configured to indicate at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

11. The method of claim 9, wherein the configuration parameters for the DMRS are carried in a field of hybrid automatic repeat request, HARQ, process numbers in the DCI.

12. The method of claim 8, wherein the DCI is applicable to a plurality of terminal devices, wherein the plurality of terminal devices comprises the first terminal device.

13. The method according to any one of claims 8 to 12, further comprising:

the network equipment sends a Radio Resource Control (RRC) signaling to the first terminal equipment, wherein the RRC signaling is used for indicating time domain resources of uplink data and/or power control parameters of the uplink data;

and the network equipment receives the uplink data sent by the first terminal equipment based on the time domain resource of the uplink data and/or the power control parameter of the uplink data.

14. The method according to any of claims 8 to 12, wherein the DCI is further configured to indicate a port number of the DMRS employed by the first terminal device and/or a resource location at which the first terminal device transmits the DMRS;

the network equipment receives the DMRS transmitted by the first terminal equipment based on the configuration parameters of the DMRS, and comprises the following steps:

and based on the configuration parameters of the DMRS and the port number of the DMRS and/or the resource position of the first terminal equipment for transmitting the DMRS, the network equipment receives the DMRS transmitted by the first terminal equipment.

15. A terminal device, comprising:

a communication unit, configured to receive downlink control information DCI sent by a network device, where the DCI is used to indicate configuration parameters of DMRSs of all terminal devices that send demodulation reference signals DMRS to the network device at the same time, where the configuration parameters of the DMRS include at least one of a type of the DMRS, a pattern used for the all terminal devices to transmit the DMRS, and a resource overhead of the all terminal devices to transmit the DMRS, and the all terminal devices include the terminal device;

the communication unit is further configured to transmit the DMRS to the network device based on the configuration parameters of the DMRS.

16. The terminal device of claim 15, wherein the DCI is specific to the terminal device.

17. The terminal device of claim 16, wherein the DCI is further configured to indicate at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

18. The terminal device of claim 16, wherein the configuration parameters for the DMRS are carried in a field of hybrid automatic repeat request, HARQ, process numbers in the DCI.

19. The terminal device of claim 15, wherein the DCI is applicable to a plurality of terminal devices, wherein the plurality of terminal devices comprises the terminal device.

20. The terminal device according to any of claims 15 to 19, wherein the communication unit is further configured to:

receiving a Radio Resource Control (RRC) signaling sent by the network equipment, wherein the RRC signaling is used for indicating time domain resources of uplink data and/or power control parameters of the uplink data;

21. The terminal device of any of claims 15 to 19, wherein the DCI is further configured to indicate a port number of the DMRS employed by the terminal device and/or a resource location at which the terminal device transmits the DMRS;

the communication unit is specifically configured to:

and sending the DMRS to the network equipment based on the configuration parameters of the DMRS and based on the port number of the DMRS and/or the resource position of the terminal equipment for sending the DMRS.

22. A network device, comprising:

a communication unit, configured to send downlink control information DCI to a first terminal device, where the DCI is used to indicate configuration parameters of DMRS of all terminal devices that send demodulation reference signals DMRS to the network device at the same time, where the configuration parameters of the DMRS include at least one of a type of the DMRS, a pattern used for the all terminal devices to transmit the DMRS, and a resource overhead used for the all terminal devices to transmit the DMRS, and the all terminal devices include the first terminal device;

the communication unit is further configured to receive the DMRS sent by the first terminal device based on the configuration parameter of the DMRS.

23. The network device of claim 22, wherein the DCI is specific to the first terminal device.

24. The network device of claim 23, wherein the DCI is further configured to indicate at least one of a code domain resource of uplink data, a modulation and coding scheme of the uplink data, and a multiple access parameter of the uplink data.

25. The network device of claim 23, wherein the configuration parameters for the DMRS are carried in a field of hybrid automatic repeat request, HARQ, process numbers in the DCI.

26. The network device of claim 22, wherein the DCI is applicable to a plurality of terminal devices, wherein the plurality of terminal devices comprises the first terminal device.

27. The network device of any of claims 22-26, wherein the communication unit is further configured to:

sending a Radio Resource Control (RRC) signaling to the first terminal equipment, wherein the RRC signaling is used for indicating time domain resources of uplink data and/or power control parameters of the uplink data;

28. The network device of any of claims 22 to 26, wherein the DCI is further configured to indicate a port number of the DMRS employed by the first terminal device and/or a resource location at which the DMRS is transmitted by the first terminal device;

the communication unit is specifically configured to:

and receiving the DMRS sent by the first terminal equipment based on the configuration parameters of the DMRS and the port number of the DMRS and/or the resource position of the first terminal equipment for sending the DMRS.

29. A terminal device, comprising: a processor and a memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 1 to 7.

30. A network device, comprising: a processor and a memory for storing a computer program, the processor for invoking and executing the computer program stored in the memory, performing the method of any one of claims 8 to 14.

31. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 7.

32. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 8 to 14.

33. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 1 to 7.

34. A computer-readable storage medium for storing a computer program which causes a computer to perform the method of any one of claims 8 to 14.