WO2020132983A1

WO2020132983A1 - Dmrs configuration method, terminal device and network device

Info

Publication number: WO2020132983A1
Application number: PCT/CN2018/124030
Authority: WO
Inventors: 徐婧
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2020-07-02
Also published as: CN112262607A; CN112262607B

Abstract

Disclosed are a DMRS configuration method, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product and a computer program. The method comprises: determining, based on at least one piece of indication information and/or at least one DMRS configuration condition, a configuration for a demodulation reference signal (DMRS) in repeated transmission; and determining, based on the configuration for the DMRS in repeated transmission, a resource position for transmitting the DMRS.

Description

DMRS configuration method, terminal equipment and network equipment

Technical field

The present invention relates to the field of information processing technology, and in particular to a demodulation reference channel (DMRS) configuration method, terminal equipment, network equipment, and computer storage media, chips, computer-readable storage media, computer program products, and computer programs .

Background technique

The current 5G (NR, new radio) system introduces slot aggregation and repetition (the latter is used for configured grant) to solve the system coverage and reliable transmission of data. However, slot aggregation and repetition in Rel15 are slot-level repetitions (as shown in Figure 1), so some delay may be introduced. In order to improve transmission reliability and reduce delay, Rel16 proposes Mini-slot repetition, that is, repeated retransmissions are as continuous as possible. The typical transmission mode is back-to-back, that is, one transmission is followed by one transmission (shown in Figure 2). For Mini-slot repetition, DMRS configuration, how to ensure the performance of channel estimation and avoid redundant DMRS overhead is a problem to be solved.

Summary of the invention

To solve the above technical problems, embodiments of the present invention provide a demodulation reference channel (DMRS, Demodulation Reference) Signal configuration method, terminal equipment, network equipment, and computer storage media, chips, computer readable storage media, computer program products, and Computer program.

In a first aspect, a DMRS configuration method is provided, which is applied to a terminal device. The method includes:

Based on at least one indication information and/or at least one DMRS configuration condition, determine the configuration of the DMRS for the demodulation reference channel in repeated transmissions;

Based on the configuration for DMRS in repeated transmission, the resource location for transmitting DMRS is determined

In a second aspect, a DMRS configuration method is provided, which is applied to a network device. The method includes:

Based on at least one indication information and/or at least one DMRS configuration condition, the configuration of the terminal device for DMRS in repeated transmission is determined.

In a third aspect, a terminal device is provided, and the method includes:

The first processing unit, based on at least one indication information and/or at least one DMRS configuration condition, determines the configuration for the demodulation reference channel DMRS in the repeated transmission; based on the configuration for the DMRS in the repeated transmission, determines the resource for transmitting the DMRS position.

In a fourth aspect, a network device is provided, including:

The second processing unit is configured to determine the configuration of the terminal device for the DMRS in the repeated transmission based on at least one indication information and/or at least one DMRS configuration condition.

According to a fifth aspect, an embodiment of the present invention provides a terminal device, including: a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect or each implementation manner thereof.

In a sixth aspect, an embodiment of the present invention provides a network device, including: a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or various implementations thereof.

According to a seventh aspect, an embodiment of the present invention provides a chip, including: a processor, for calling and running a computer program from a memory, so that a device installed with the chip executes the first aspect, the second aspect, or each of the above Implementation method.

According to an eighth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing a computer program, the computer program causing a computer to perform the first aspect, the second aspect, and the third aspect Or the methods in its various implementations.

In a ninth aspect, an embodiment of the present invention provides a computer program product, including computer program instructions, which cause the computer to execute the method in the first aspect, the second aspect, the third aspect, or various implementations thereof.

According to a tenth aspect, an embodiment of the present invention provides a computer program that causes a computer to execute the method in the foregoing first aspect, second aspect, third aspect, or various implementations thereof.

By adopting the above solution, the configuration of the DMRS in the repeated transmission can be determined according to the indication information and/or configuration conditions, and finally the terminal device determines the resource location of the DMRS according to the configuration of the DMRS to transmit the DMRS. In this way, not only can the performance of channel estimation be guaranteed, but also the redundant DMRS overhead caused by setting DMRS in each repeated transmission can be avoided.

BRIEF DESCRIPTION

Figure 1 is a schematic diagram of repeated transmission;

Figure 2 is another schematic diagram of repeated transmission;

3 is a schematic diagram 1 of a communication system architecture provided by an embodiment of the present application;

4 is a schematic flowchart 1 of a DMRS configuration method provided by an embodiment of the present application;

5 is a schematic diagram of a scenario of a DMRS setting provided by an embodiment of the present invention;

6 is another schematic diagram of a DMRS configuration provided by an embodiment of the present invention;

7 is a second schematic flowchart of a DMRS configuration method provided by an embodiment of the present application;

8 is a schematic structural diagram of a terminal device provided by an embodiment of the present application;

9 is a schematic structural diagram of a network device composition provided by an embodiment of the present application;

10 is a schematic structural diagram of a composition of a communication device according to an embodiment of the present invention;

11 is a schematic block diagram of a chip provided by an embodiment of the present application;

FIG. 12 is a second schematic diagram of a communication system architecture provided by an embodiment of the present application.

detailed description

In order to understand the features and technical contents of the embodiments of the present invention in more detail, the following describes the implementation of the embodiments of the present invention in detail with reference to the accompanying drawings. The accompanying drawings are for reference only and are not intended to limit the embodiments of the present invention.

The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System (Mobile) (GSM) system, Code Division Multiple Access (CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Global Interoperability for Microwave Access (WiMAX) communication system or 5G system, etc.

Exemplarily, the communication system 100 applied in the embodiments of the present application may be as shown in FIG. 3. 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, terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area. Optionally, the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.

The communication system 100 also includes at least one terminal device 120 within the coverage of the network device 110. As used herein, "terminal equipment" includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Lines (Digital Subscriber Line, DSL), digital cables, direct cable connections ; And/or another data connection/network; and/or via wireless interfaces, such as for cellular networks, wireless local area networks (Wireless Local Area Network, WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device configured to receive/transmit communication signals; and/or Internet of Things (IoT) equipment. A terminal device configured to communicate through 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, satellites or cellular phones; Personal Communication Systems (PCS) terminals that can combine cellular radiotelephones with data processing, facsimile, and data communication capabilities; can include radiotelephones, pagers, Internet/internal PDA with networked access, web browser, notepad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palm-type receivers or others including radiotelephone transceivers Electronic device. Terminal equipment can refer to access terminal, user equipment (User Equipment), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or User device. Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in a 5G network, or terminal devices in a PLMN that will evolve in the future, etc.

Optionally, terminal device 120 may perform direct terminal (Device to Device, D2D) communication.

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

FIG. 3 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

It should be understood that the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices. Taking the communication system 100 shown in FIG. 3 as an example, the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes an associated object, which means that there can be three kinds of relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, exist alone B these three cases. In addition, the character "/" in this article generally indicates that the related objects before and after are in an "or" relationship.

Example one

This embodiment provides a DMRS configuration method, which is applied to a terminal device, as shown in FIG. 4, including:

Step 201: Based on at least one indication information and/or at least one DMRS configuration condition, determine the configuration of the DMRS for the demodulation reference channel in repeated transmissions;

Step 202: Determine the resource location for transmitting DMRS based on the configuration for DMRS in repeated transmission.

Here, the repeated transmission may be repeated transmission of short time slots. Repetitive transmission of Mini-Slot (Repetition).

Regarding the foregoing step 201, based on at least one indication information and/or at least one DMRS configuration condition, the configuration for the demodulation reference channel DMRS in repeated transmission is determined. This embodiment may provide the following processing scenarios:

scene 1,

Receive downlink control information DCI and/or RRC signaling sent by the network side; based on the DCI and/or RRC signaling, determine the configuration of DMRS in repeated transmission.

That is, in Scenario 1, the information transmitted in DCI and/or RRC signaling or the transmission format of DCI is used to determine the configuration of DMRS in repeated transmission. The following will be described from the realization of DCI and RRC signaling sub-scenes:

Sub-scene 1. Instruct the terminal device of DMRS configuration through DCI.

Among them, one way is to determine the DMRS configuration based on the DCI format, and/or to determine the information field for acquiring the DMRS configuration based on the DCI format, specifically:

When the format of the DCI is the first type format, it is determined that the configuration of the DMRS in the repeated transmission is to send the DMRS in each repeated transmission;

When the DCI format is the second type format, obtain the configuration of the DMRS in the repeated transmission from the designated domain of the DCI;

Among them, the first type format is different from the second type format.

The first type format may be DCI format 0_0 or 1_0, and the second type format may be DCI Format 0_1 or 1_1. It should be understood that here, the specific formats corresponding to the two types of formats can be determined according to the preset rules between the terminal and the network side. The foregoing is only an example of division. In actual processing, the first type of format can also be Other settings are just to ensure that the second type format is different from the first type format, and it is not exhaustive here.

For example, when DCI uses the first type of format, namely DCI format 0_0 or 1_0, the default DMRS configuration of the terminal device is: each repeated transmission includes DMRS;

When DCI adopts the second type of format, that is, for DCI format0_1/1_1, the configuration of DMRS in repeated transmission can be obtained from the designated domain of DCI; that is, at this time, the network side can indicate in a domain included in DCI DRMS configuration during repeated transmission.

Further, the above designated domain can multiplex the DMRS domain. That is, the DMRS field not only indicates the DMRS port, but the CDM group also contains the DRMS configuration during repeated transmission; or the DMRS field is used to indicate the DMRS port and DMRS configuration during repeated transmission; or the DMRS field is used to indicate the CDM group and DMRS configuration during repeated transmission; or DMRS The field is used to indicate the DMRS configuration in repeated transmission.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Among them, whether each repeated transmission contains DMRS can be determined according to the value of the corresponding identification bit in the DCI designated field. For example, when the value is 1, it can be determined that each repeated transmission contains DMRS. When it is 0, there is no need to include DMRS in every repeated transmission; of course, vice versa, just do not do exhaustive.

The DMRS configuration period may indicate that each repeated transmission or every two repeated transmissions contains a DMRS.

The DMRS pattern may be a bitmap mode. For example, the configuration corresponding to the DMRS is determined through the indication of a pre-defined pattern. One way may be to set the DMRS by 1 in the bitmap to indicate the corresponding position, and 0 to not set the DMRS; For another example, assuming that there are four repeated transmissions and the bitmap is set to 1100, it can be indicated that the first two repeated transmissions set DMRS, and the next two repeated transmissions do not set DMRS. It should be noted that the setting of the indication value in the bitmap may be opposite to the above, and will not be described in detail. In addition, the specific setting of the bitmap corresponding to the repeated transmission is also only an example, and does not mean that there are no other setting methods in this embodiment, but it is not exhaustive here.

Another way of sub-scene 1 is not to distinguish the format of DCI, to obtain the configuration of DMRS in repeated transmission from the designated domain of the DCI.

In other words, all DCI format formats support DMRS configuration in repeated transmission. Typically, the designated domain may be a multiplexed DMRS domain.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

The detailed explanation of the configuration of the DMRS is the same as that described above and will not be repeated here.

Sub-scenario 2. Semi-static indication, that is, to obtain the DMRS configuration in the repeated transmission indicated by the network side through RRC signaling.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Scene 2.

Unlike Scenario 1, Scenario 1 can be understood as a way of displaying instructions, that is, through the DCI format or DCI content, or directly through RRC signaling to indicate the DMRS configuration for the terminal device; Scenario 2, can be understood as The preset rules implicitly instruct the terminal device DMRS configuration, specifically:

Based on at least one DMRS configuration condition, determining the configuration for the demodulation reference channel DMRS in repeated transmission includes at least one of the following:

Condition 1. When the repeated transmission is repeated transmission across at least two time slots, configure at least one DMRS in each time slot of the at least two time slots;

Condition 2: When repeating transmission with frequency hopping in at least two frequency domain ranges, configure the DMRS in each frequency domain range of the at least two frequency domain ranges;

Condition 3: When the precoding changes, the time domain period of the DMRS is determined according to the time domain period of the precoding change.

Based on condition 1, when transmitting across slot (that is, across two or more slots), the transmission phase will change. Therefore, DRMS cannot be shared for repeated transmission across slots, otherwise the channel estimation will be biased. For the repeated transmission in Slot, the channel is continuous, and DMRS can be shared to reduce DMRS overhead.

That is, the repeated transmission in the same Slot may contain at least one DMRS. For example, the repeated transmission in the same Slot may include the DMRS only in the first repeated transmission. Repeated transmission of different slots, each slot contains at least one DMRS. For example, referring to FIG. 5, the first repeated transmission in each slot includes DRMS, that is, the repeated transmission in FIG. 5 spans time slot n and time slot n+1, n is an integer; then in time slot n and time slot n+ The first repeated transmission of 1 is set to transmit DMRS. DMRS can be at the beginning of repeated transmission, that is, the shaded part in the figure; in addition, each square in FIG. 5 represents a repeated transmission.

It should be understood that the above-mentioned FIG. 5 is only an example, and there may be more time slots in actual processing, but it is not exhaustive.

Regarding condition 2, frequency hopping occurs in multiple repeated transmissions. Because repeated transmissions occupy different frequency domain positions, there are differences in channel conditions. Therefore, repeated transmissions occupying different frequency domain positions require independent configuration of DMRS.

Specifically, one DMRS is configured for each hop. A DMRS is configured for repeated transmission occupying the same frequency domain position, and can typically be configured in the first repeated transmission in the same frequency domain. In addition, DMRS is independently configured for repeated transmissions occupying different frequency domain positions.

For example, referring to FIG. 6, taking the time slot n as an example, the repeated transmission in the time slot n occupies two frequency domain positions. In the figure, the upper and lower areas are distinguished from each other in the frequency domain. The position of the domain, the lower part of the figure is understood as the position of the second frequency domain; based on condition 2, the DMRS can be set once at the first repeated transmission among the repeated transmissions at the first frequency domain position, and the repeated transmission at the second frequency domain position The DMRS is set once at the first repetitive transmission in; the time slot n+1 is similar to the time slot n and will not be repeated here.

Regarding condition 3, the time domain period of DMRS is configured to coincide with the time domain period of precoding. And, further, the DMRS is configured at the first repeated transmission of each time domain period. For example, precoding changes every two symbols, that is, a DMRS is configured for every two symbols.

Regarding the above three conditions in this scenario, it should also be noted that the above three conditions can be used alone or in combination. For example, for repeated transmission, the time domain period of the DMRS can be determined in combination with the time domain period of the precoding, and the configuration can be further combined with the repetition of frequency hopping. Alternatively, the configuration may also be combined with the situation across time slots and the frequency hopping situation in the frequency domain. The combined use case still adopts its specific regulations to deal with each condition, so it will not be elaborated one by one.

In addition, regarding scenario 2, the configuration conditions of the DMRS can be configured by the network side, and typically can be configured by high-level signaling.

Finally, in the solution provided in this embodiment, the above scenarios 1 and 2 can also be used in combination, that is, both the indication of DCI and/or RRC signaling and the configuration conditions of DMRS can be combined to determine the resource location of the DMRS .

For example, configure one DMRS for every two repeated transmissions through RRC signaling; at the same time, combine condition 1 in the DMRS configuration conditions in scenario 2 When multiple repeated transmissions occur across slots, configure an extra for the first repeated transmission across slots DMRS. It can be understood that, the RRC signaling indicates that the DMRS configuration period sent by the terminal device indicates that the configuration period of the DMRS may be configured once for every 2 repeated transmissions. In addition, when repeated transmission is repeated transmission across time slots (slots), assuming that there are 4 repeated transmissions in the first slot and one repeated transmission in the second slot, it can be regarded as in the first slot Configure a DMRS for the first repetitive transmission, then configure a DMRS for the third repetitive transmission in the first slot; configure a DMRS again as an additional DMRS in a repetitive transmission for the second slot.

For another example, configure a DMRS for every two repeated transmissions through DCI signaling, and when multiple repeated transmissions occur across slots, configure a DMRS for the first repeated transmission of each time slot in the slot. The subsequent repeated transmissions in the slot configure the DMRS according to the configuration period.

Based on the previously determined DMRS configuration, the resource location corresponding to the DMRS can be determined, for example, at which repeated transmission the DMRS is set, and finally the DMRS is sent based on the determined resource location corresponding to the DMRS.

It can be seen that by adopting the above solution, the configuration of the DMRS in the repeated transmission can be determined according to the indication information and/or configuration conditions, and finally the terminal device determines the resource location of the DMRS according to the configuration of the DMRS to transmit the DMRS. In this way, not only can the performance of channel estimation be guaranteed, but also the redundant DMRS overhead caused by setting DMRS in each repeated transmission can be avoided.

Example two

This embodiment provides a DMRS configuration method, which is applied to a network device, as shown in FIG. 7, including:

Step 501: Based on at least one indication information and/or at least one DMRS configuration condition, determine the configuration of the terminal device for DMRS in repeated transmission.

Regarding the foregoing determination based on at least one indication information and/or at least one DMRS configuration condition to determine the configuration of the terminal device for DMRS in repeated transmission, this embodiment may provide the following processing scenarios:

scene 1,

Through the downlink control information DCI or RRC signaling, the terminal device is instructed to configure the DMRS in the repeated transmission.

Sub-scene 1. Instruct the terminal device of DMRS configuration through DCI.

When the format of the DCI is the first type format, the default terminal device DMRS configuration in repeated transmission is to send the DMRS in each repeated transmission;

When the DCI format is the second type format, add the configuration of DMRS in the repeated transmission to the designated field of the DCI, and send the DCI to the terminal device;

Among them, the first type format is different from the second type format.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Another way of sub-scene 1 is not to distinguish the format of DCI, add the configuration of DMRS in repeated transmission to the designated domain of the DCI, and send the DCI to the terminal device.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Sub-scene 2. Semi-static indication, that is, DMRS configuration in repeated transmission indicated by RRC signaling.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Scene 2.

Condition 1. When the repeated transmission is repeated transmission across at least two time slots, determine that the terminal device configures at least one DMRS in each time slot of the at least two time slots;

Condition 2: When repeating transmission with frequency hopping in at least two frequency domain ranges, it is determined that the terminal device configures the DMRS in each frequency domain range of the at least two frequency domain ranges;

Condition 3: When the precoding changes, according to the time domain period of the precoding change, determine the time domain period in which the terminal device transmits the DMRS.

That is, the repeated transmission in the same Slot may contain at least one DMRS. For example, the repeated transmission in the same Slot may include the DMRS only in the first repeated transmission. Repeated transmission of different slots, each slot contains at least one DMRS. For example, referring to FIG. 5, the first repeated transmission in each slot includes DRMS, that is, the repeated transmission in FIG. 5 spans time slot n and time slot n+1, n is an integer; then in time slot n and time slot n+ In the first repeated transmission of 1, transmission DMRS is set. DMRS can be at the beginning of repeated transmission, that is, the shaded part in the figure; in addition, each square in FIG. 5 represents a repeated transmission.

Based on the previously determined DMRS configuration, the resource location corresponding to the DMRS transmitted by the terminal device can be determined, for example, at which repeated transmission the DMRS is set, and finally the DMRS transmitted by the terminal device is detected and obtained based on the determined resource location corresponding to the DMRS.

Example three

This embodiment provides a terminal device, as shown in FIG. 8, including:

The first processing unit 61 determines the configuration of the DMRS for the demodulation reference channel in the repeated transmission based on at least one indication information and/or at least one DMRS configuration condition; and determines the transmission of the DMRS based on the configuration for the DMRS in the repeated transmission Resource location.

This embodiment can provide the following processing scenarios:

scene 1,

The terminal device also includes:

The first communication unit 62 is configured to receive downlink control information DCI and/or RRC signaling sent by the network side;

The first processing unit 61 is configured to determine the configuration of DMRS in repeated transmission based on the DCI and/or RRC signaling.

Sub-scene 1. Instruct the terminal device of DMRS configuration through DCI.

The first processing unit 61, when the format of the DCI is the first type format, determines that the configuration of the DMRS in the repeated transmission is to send the DMRS in each repeated transmission;

Among them, the first type format is different from the second type format.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Another way of sub-scene 1 is not to distinguish the DCI format. The first processing unit 61 obtains the configuration of the DMRS in the repeated transmission from the designated domain of the DCI.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Sub-scene 2. The semi-static indication, that is, the first processing unit 61, obtains the DMRS configuration in the repeated transmission indicated by the network side through RRC signaling.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Scene 2.

The first processing unit 61 can determine the resource location corresponding to the DMRS based on the previously determined DMRS configuration, for example, at which repeated transmission the DMRS is set, and finally the first communication unit 62 sends the DMRS based on the determined resource location corresponding to the DMRS .

Example 4

This embodiment provides a network device, as shown in FIG. 9, including:

The second processing unit 71 is configured to determine the configuration of the terminal device for DMRS in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition.

scene 1,

The network equipment also includes:

The second communication unit 72 is configured to indicate the configuration of the DMRS in the repeated transmission to the terminal device through downlink control information DCI or RRC signaling.

Sub-scene 1. Instruct the terminal device of DMRS configuration through DCI.

When the format of the DCI is the first type format, the second processing unit 71 defaults that the DMRS configuration of the terminal device in repeated transmission is to send the DMRS in each repeated transmission;

When the DCI format is the second type format, add the DMRS configuration in the repeated transmission to the designated domain of the DCI;

Among them, the first type format is different from the second type format.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Another way of sub-scene 1 is not to distinguish the format of DCI. The second processing unit 71 adds the configuration of DMRS in the repeated transmission in the designated domain of the DCI, and the second communication unit 72 sends the DCI to the terminal device.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

The configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.

Scene 2.

The second processing unit 71 determines the configuration of the DMRS for the demodulation reference channel in the repeated transmission based on at least one DMRS configuration condition, including at least one of the following:

FIG. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application. The communication device may be the foregoing terminal device or network device of this embodiment. The communication device 1000 shown in FIG. 10 includes a processor 1010, and the processor 1010 can call and run a computer program from a memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 10, the communication device 1000 may further include a memory 1020. The processor 1010 can call and run a computer program from the memory 1020 to implement the method in the embodiments of the present application.

The memory 1020 may be a separate device independent of the processor 1010, or may be integrated in the processor 1010.

Optionally, as shown in FIG. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.

Among them, the transceiver 1030 may include a transmitter and a receiver. The transceiver 1030 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 1000 may specifically be a network device according to an embodiment of the present application, and the communication device 1000 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application. .

Optionally, the communication device 1000 may specifically be a terminal device or a network device according to an embodiment of the present application, and the communication device 1000 may implement the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. It is concise and will not be repeated here.

11 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1100 shown in FIG. 11 includes a processor 1110, and the processor 1110 can call and run a computer program from the memory to implement the method in the embodiments of the present application.

Optionally, as shown in FIG. 11, the chip 1100 may further include a memory 1120. The processor 1110 can call and run the computer program from the memory 1120 to implement the method in the embodiments of the present application.

The memory 1120 may be a separate device independent of the processor 1110, or may be integrated in the processor 1110.

Optionally, the chip 1100 may further include an input interface 1130. The processor 1110 can control the input interface 1130 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 1100 may further include an output interface 1140. The processor 1110 can control the output interface 1140 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.

Optionally, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiments of the present application.

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

12 is a schematic block diagram of a communication system 1200 provided by an embodiment of the present application. As shown in FIG. 12, the communication system 1200 includes a terminal device 1210 and a network device 1220.

Among them, the terminal device 1210 can be used to implement the corresponding function implemented by the terminal device in the above method, and the network device 1220 can be used to implement the corresponding function implemented by the network device in the above method. .

It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip, which has signal processing capabilities. In the implementation process, the steps of the foregoing method embodiments may be completed by instructions in the form of hardware integrated logic circuits or software in the processor. The aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed. The 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 conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor. The software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable programmable read only memory (Electrically, EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. 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 (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memories of the systems and methods described herein are intended to include, but are not limited to these and any other suitable types of memories.

It should be understood that the foregoing memory is exemplary but not limiting, for example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous) DRAM (SDRAM), double data rate synchronous dynamic random access memory (double data) SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.

Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, for simplicity And will not be repeated here.

An embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, I will not repeat them here.

An embodiment of the present application also provides a computer program.

Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program runs on the computer, the computer is implemented by the mobile terminal/terminal device in performing various methods of the embodiments of the present application For the sake of brevity, I will not repeat them here.

Persons of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and conciseness of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

The above is only the specific implementation of this application, but the scope of protection of this application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in this application. It should be covered by the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A DMRS configuration method is applied to terminal equipment. The method includes:

Based on at least one indication information and/or at least one DMRS configuration condition, determine the configuration of the DMRS for the demodulation reference channel in repeated transmissions;

Based on the configuration for DMRS in repeated transmission, the resource location for transmitting DMRS is determined.
The method according to claim 1, wherein the repeated transmission is a repeated transmission of short time slots.
The method according to claim 1, wherein the determining, based on at least one indication information and/or at least one DMRS configuration condition, the configuration of the DMRS for the demodulation reference channel in the repeated transmission includes:

Receive downlink control information DCI and/or RRC signaling sent by the network side;

Based on the DCI and/or RRC signaling, the configuration of DMRS in repeated transmission is determined.
The method according to claim 3, wherein the determining the configuration of DMRS in repeated transmission based on the DCI and/or RRC signaling includes:

Obtain the configuration of DMRS in repeated transmission from the designated domain of the DCI.
The method according to claim 3, wherein, when determining the configuration of DMRS in repeated transmission based on the DCI or RRC signaling, the method further comprises:

When the format of the DCI is the first type format, it is determined that the configuration of the DMRS in the repeated transmission is to send the DMRS in each repeated transmission;

When the DCI format is the second type format, obtain the configuration of the DMRS in the repeated transmission from the designated domain of the DCI;

Among them, the first type format is different from the second type format.
The method according to any one of claims 1 to 5, wherein the configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.
The method of claim 1, wherein the method further comprises:

Based on at least one DMRS configuration condition, determining the configuration for the demodulation reference channel DMRS in repeated transmission includes at least one of the following:

When the repeated transmission is repeated transmission across at least two time slots, configure at least one DMRS in each time slot of the at least two time slots;

When repeating transmission with frequency hopping in at least two frequency domain ranges, configure the DMRS in each frequency domain range of the at least two frequency domain ranges;

When the precoding changes, the time domain period of the DMRS is determined according to the time domain period of the precoding change.
A DMRS configuration method is applied to network equipment. The method includes:

Based on at least one indication information and/or at least one DMRS configuration condition, the configuration of the terminal device for DMRS in repeated transmission is determined.
The method according to claim 8, wherein the repeated transmission is a short slot repeated transmission.
The method according to claim 8, wherein the determining, based on at least one indication information and/or at least one DMRS configuration condition, the terminal device's configuration for DMRS in repeated transmission includes:

Through the downlink control information DCI or RRC signaling, the terminal device is instructed to configure the DMRS in the repeated transmission.
The method according to claim 10, wherein the indicating the configuration of the DMRS in the repeated transmission to the terminal device through the downlink control information DCI or RRC signaling includes:

Add the configuration of DMRS in the repeated transmission to the designated domain of the DCI, and send the DCI to the terminal device.
The method according to claim 10, wherein, when the downlink control information DCI or RRC signaling is used to indicate to the terminal device the configuration of DMRS in repeated transmission, the method further comprises:

When the format of the DCI is the first type format, the default terminal device DMRS configuration in repeated transmission is to send the DMRS in each repeated transmission;

When the DCI format is the second type format, add the configuration of DMRS in the repeated transmission to the designated field of the DCI, and send the DCI to the terminal device;

Among them, the first type format is different from the second type format.
The method according to any one of claims 8-12, wherein the configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.
The method according to claim 8, wherein the at least one DMRS configuration condition includes at least one of the following:

When the repeated transmission is repeated transmission across at least two time slots, it is determined that the terminal device configures at least one DMRS in each time slot of the at least two time slots;

When repeating transmission with frequency hopping in at least two frequency domain ranges, it is determined that the terminal device configures the DMRS in each frequency domain range of the at least two frequency domain ranges;

When the precoding changes, the time domain period for the terminal device to transmit the DMRS is determined according to the time domain period of the precoding change.
A terminal device, the method includes:

The first processing unit, based on at least one indication information and/or at least one DMRS configuration condition, determines the configuration for the demodulation reference channel DMRS in the repeated transmission; based on the configuration for the DMRS in the repeated transmission, determines the resource for transmitting the DMRS position.
The terminal device according to claim 15, wherein the repeated transmission is a repeated transmission of a short time slot.
The terminal device according to claim 15, wherein the terminal device further comprises:

The first communication unit is configured to receive downlink control information DCI and/or RRC signaling sent by the network side;

The first processing unit is configured to determine the configuration of DMRS in repeated transmission based on the DCI and/or RRC signaling.
The terminal device according to claim 17, wherein the first processing unit is configured to acquire a configuration of DMRS in repeated transmission from a designated domain of the DCI.
The terminal device according to claim 17, wherein the first processing unit is configured to, when the format of the DCI is the first type format, determine that the configuration of the DMRS in the repeated transmission is equal to that in each repeated transmission Send DMRS;

When the DCI format is the second type format, obtain the configuration of the DMRS in the repeated transmission from the designated domain of the DCI;

Among them, the first type format is different from the second type format.
The terminal device according to any one of claims 15-19, wherein the configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.
The terminal device according to claim 15, wherein the first processing unit is configured to execute at least one of the following when determining the configuration for the demodulation reference channel DMRS in repeated transmission based on at least one DMRS configuration condition :

When the repeated transmission is repeated transmission across at least two time slots, configure at least one DMRS in each time slot of the at least two time slots;

When repeating transmission with frequency hopping in at least two frequency domain ranges, configure the DMRS in each frequency domain range of the at least two frequency domain ranges;

When the precoding changes, the time domain period of the DMRS is determined according to the time domain period of the precoding change.
A network device, including:

The second processing unit is configured to determine the configuration of the terminal device for the DMRS in the repeated transmission based on at least one indication information and/or at least one DMRS configuration condition.
The network device according to claim 22, wherein the repeated transmission is a repeated transmission of short time slots.
The network device according to claim 22, wherein the network device further comprises:

The second communication unit is configured to indicate the configuration of the DMRS in the repeated transmission to the terminal device through downlink control information DCI or RRC signaling.
The network device according to claim 24, wherein the second processing unit is configured to add a configuration of DMRS in repeated transmission in a designated domain of the DCI;

The second communication unit is configured to send the DCI to the terminal device.
The network device according to claim 24, wherein the second processing unit is configured to, when the format of the DCI is the first type format, configure the DMRS of the default terminal device to repeat transmission in each repeated transmission Both send DMRS;

When the DCI format is the second type format, add the DMRS configuration in the repeated transmission to the designated domain of the DCI;

Among them, the first type format is different from the second type format.
The network device according to any one of claims 22 to 26, wherein the configuration of the DMRS includes at least one of the following:

Whether each repeated transmission contains DMRS;

DMRS configuration cycle;

DMRS style.
The network device according to claim 22, wherein the at least one DMRS configuration condition includes at least one of the following:

When the repeated transmission is repeated transmission across at least two time slots, it is determined that the terminal device configures at least one DMRS in each time slot of the at least two time slots;

When repeating transmission with frequency hopping in at least two frequency domain ranges, it is determined that the terminal device configures the DMRS in each frequency domain range of the at least two frequency domain ranges;

When the precoding changes, the time domain period for the terminal device to transmit the DMRS is determined according to the time domain period of the precoding change.
A terminal device includes: a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the steps of the method according to any one of claims 1-7.
A network device, including: a processor and a memory for storing a computer program that can run on the processor,

Wherein, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the steps of the method according to any one of claims 8-14.
A chip, including: a processor, for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1-7.
A chip, including: a processor, for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 8-14.
A computer-readable storage medium for storing a computer program, the computer program causing a computer to perform the steps of the method according to any one of claims 1-14.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method according to any one of claims 1-14.
A computer program that causes a computer to perform the method according to any one of claims 1-14.