CN112262607B

CN112262607B - DMRS configuration method, terminal equipment and network equipment

Info

Publication number: CN112262607B
Application number: CN201880094478.1A
Authority: CN
Inventors: 徐婧
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2024-03-05
Anticipated expiration: 2038-12-26
Also published as: CN112262607A; WO2020132983A1

Abstract

The invention discloses 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, wherein the method comprises the following steps: determining a configuration for a demodulation reference channel (DMRS) in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition; and determining the resource position of the transmission DMRS based on the configuration of the DMRS in the repeated transmission.

Description

DMRS configuration method, terminal equipment and network equipment

Technical Field

The present invention relates to the field of information processing technologies, and in particular, to a demodulation reference channel (DMRS, demodulation Reference Signal) configuration method, a terminal device, a network device, a computer storage medium, a chip, a computer readable storage medium, a computer program product, and a computer program.

Background

Current 5G (NR) systems introduce slot aggregation and repetition (the latter for configured grant) for addressing the reliability of system coverage and data transmission. But both slot aggregation and repetition in Rel15 are repetitions of the slot level (as shown in fig. 1) and may therefore introduce some delay. In order to improve transmission reliability and reduce latency, rel16 proposes Mini-slot repetition, i.e., repeated retransmissions that are as continuous as possible, typically in a back-to-back manner, i.e., one transmission is followed by another transmission (shown in fig. 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.

Disclosure of Invention

To solve the above technical problems, embodiments of the present invention provide a demodulation reference channel (DMRS, demodulation Reference Signal) configuration method, a terminal device, a network device, a computer storage medium, a chip, a computer readable storage medium, a computer program product, and a computer program.

In a first aspect, a DMRS configuration method is provided and applied to a terminal device, where the method includes:

determining a configuration for a demodulation reference channel (DMRS) in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition;

determining a resource location for transmitting the DMRS based on the configuration for the DMRS in the repeated transmission

In a second aspect, a DMRS configuration method is provided and applied to a network device, where the method includes:

and determining the configuration of the terminal equipment for the DMRS in the repeated transmission based on the at least one indication information and/or the at least one DMRS configuration condition.

In a third aspect, there is provided a terminal device, the method comprising:

a first processing unit for determining a configuration of a demodulation reference channel (DMRS) in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition; and determining the resource position of the transmission DMRS based on the configuration of the DMRS in the repeated transmission.

In a fourth aspect, there is provided a network device comprising:

and the second processing unit is used for determining the configuration of the terminal equipment for the DMRS in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition.

In a fifth aspect, an embodiment of the present invention provides a terminal device, including: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, to perform the method in the 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 capable of running on the processor,

wherein the memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, to perform the method according to the second aspect or each implementation manner thereof.

In 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, causing a device on which the chip is mounted to perform the method of the first aspect, the second aspect or various implementations thereof.

In an eighth aspect, embodiments of the present invention provide a computer-readable storage medium storing a computer program, where the computer program causes a computer to execute the method in the first aspect, the second aspect, the third aspect, or each implementation manner thereof.

In a ninth aspect, embodiments of the present invention provide a computer program product comprising computer program instructions for causing a computer to perform the method of the first aspect, the second aspect, the third aspect or implementations thereof.

In a tenth aspect, embodiments of the present invention provide a computer program for causing a computer to perform the method of the first aspect, the second aspect, the third aspect or each implementation thereof.

By adopting the scheme, the configuration of the DMRS in repeated transmission can be determined according to the indication information and/or the configuration condition, and finally the terminal equipment can determine the resource position of the DMRS according to the configuration of the DMRS so as to transmit the DMRS. Therefore, the channel estimation performance can be ensured, and redundant DMRS overhead caused by setting the DMRS in each repeated transmission can be avoided.

Drawings

Fig. 1 is a schematic diagram of a retransmission;

fig. 2 is another schematic diagram of a retransmission;

FIG. 3 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;

fig. 4 is a schematic flow chart of a DMRS configuration method provided in an embodiment of the present application;

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

fig. 6 is another schematic diagram of a DMRS configuration according to an embodiment of the present invention;

fig. 7 is a second flowchart of a DMRS configuration method provided in the embodiment of the present application;

fig. 8 is a schematic diagram of a composition structure of a terminal device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a network device composition structure provided in an embodiment of the present application;

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

FIG. 11 is a schematic block diagram of a chip provided in an embodiment of the present application;

fig. 12 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

Detailed Description

For a more complete understanding of the nature and the technical content of the embodiments of the present invention, reference should be made to the following detailed description of embodiments of the invention, taken in conjunction with the accompanying drawings, which are meant to be illustrative only and not limiting of the embodiments of the invention.

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication systems, or 5G systems, and the like.

By way of example, the communication system 100 to which embodiments of the present application apply 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). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area. Alternatively, 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, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle 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 future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

The communication system 100 further comprises at least one terminal device 120 located within the coverage area of the network device 110. "terminal equipment" as used herein includes, but is not limited to, connections via wireline, such as via public-switched telephone network (Public Switched Telephone Networks, PSTN), digital cadaver line (Digital Subscriber Line, DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (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 the other terminal device arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminal devices arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal device 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 (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved PLMN, etc.

Alternatively, direct terminal (D2D) communication may be performed between the terminal devices 120.

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

Fig. 3 illustrates one network device and two terminal devices, alternatively, the communication system 100 may include a plurality of network devices and each network device may include other numbers of terminal devices within a coverage area, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 3 as an example, the communication device may include the network device 110 and the terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be the specific devices described above, which are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Embodiment 1,

The embodiment provides a DMRS configuration method, which is applied to a terminal device, as shown in fig. 4, and includes:

step 201: determining a configuration for a demodulation reference channel (DMRS) in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition;

step 202: and determining the resource position of the transmission DMRS based on the configuration of the DMRS in the repeated transmission.

Here, the repeated transmission may be a short-time-slot repeated transmission. I.e. repeated transmission (Repetition) of Mini-Slot.

With respect to the foregoing step 201, determining 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, the present embodiment may provide the following several processing scenarios:

scene 1,

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

That is, in scenario 1, the configuration of DMRS in repeated transmission is determined using information transmitted in DCI and/or RRC signaling, or using a transmission format of DCI. The following description is made from the implementation sub-scenario of DCI and RRC signaling, respectively:

sub-scenario 1, indicates the configuration of DMRS for the terminal device through DCI.

One way is to determine the configuration of the DMRS based on the format of the DCI, and/or determine the information field for obtaining the configuration of the DMRS based on the format of the DCI, specifically:

when the format of the DCI is a first type format, determining that the configuration of the DMRS in repeated transmission is that the DMRS is transmitted in each repeated transmission;

when the DCI format is the second type format, acquiring the configuration of the DMRS in repeated transmission from a designated domain of the DCI;

wherein the first type of format is different from the second type of format.

The first type Format may be DCI Format 0_0 or 1-0, and the second type Format may be DCI Format0_1 or 1_1. It should be understood that, what specific formats corresponding to the two types of formats respectively may be determined according to preset rules between the terminal and the network side, the foregoing is only a division example, and in actual processing, the first type of format may be other settings, which only needs to ensure that the second type of format is different from the first type of format, which is not exhaustive.

For example, when the DCI adopts the first type format, i.e., DCI format 0_0 or 1_0, the terminal device defaults to the configuration of DMRS: each repeated transmission contains a DMRS;

when the DCI adopts the second type format, i.e., for DCI format0_1/1_1, the configuration of the DMRS in repeated transmission may be obtained from the specified domain of the DCI; that is, at this time, the network side may indicate the DRMS configuration in the repeated transmission in one field included in the DCI.

Further, the above specified domain may multiplex DMRS domains. Namely, the DMRS domain not only indicates the DMRS port, but also contains DRMS configuration in repeated transmission; or the DMRS domain is used for indicating the DMRS port and the DMRS configuration in repeated transmission; or the DMRS field is used to indicate the DMRS configuration in CDM group and repeated transmission; or the DMRS field is used to indicate DMRS configuration in repeated transmission.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Whether each repeated transmission includes DMRS may be determined according to a value of a corresponding identification bit in the DCI assignment domain, for example, when the value is 1, it may be determined that each repeated transmission includes DMRS, and when the value is 0, it is not necessary to include DMRS in each repeated transmission; of course, vice versa is not exhaustive.

The DMRS configuration period may indicate: each repeated transmission or every two repeated transmissions contains one DMRS.

The DMRS pattern may be in a bitmap manner, for example, the configuration corresponding to the DMRS is determined by an indication of a predefined pattern, and in one manner, the DMRS may be set for a position in the bitmap, where 1 indicates that the DMRS is corresponding, and 0 indicates that the DMRS is not set; for another example, assuming that there are 4 repeated transmissions, the bitmap is set to 1100, it may indicate that the first two repeated transmissions set the DMRS and the last two repeated transmissions did not set the 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 again. In addition, the specific setting of the bitmap corresponding to the repeated transmission is also merely an example, and does not indicate that other setting manners are not possible in the present embodiment, but is not exhaustive here.

Another way of sub-scenario 1 is to obtain the configuration of DMRS in repeated transmission from the specified field of DCI without distinguishing the format of the DCI.

That is, all DCI format formats support DMRS configuration in repeated transmission. Typically, the specified domain may be a multiplexed DMRS domain.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

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

And sub-scene 2, semi-static indication, namely obtaining the DMRS configuration in repeated transmission indicated by the network side through RRC signaling.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Scene 2,

Unlike scenario 1, scenario 1 may be understood as a way of displaying an indication, i.e. indicating the configuration of the DMRS for the terminal device by the format of the DCI or the content of the DCI, or directly by RRC signaling; scenario 2, then, may be understood as implicitly indicating the configuration of the terminal device DMRS according to a preset rule, specifically:

Based on at least one DMRS configuration condition, determining a configuration for a demodulation reference channel, DMRS, in a repeated transmission, comprising at least one of:

condition 1, when the repeated transmission is a repeated transmission across at least two slots, configuring at least one DMRS in each of the at least two slots;

condition 2, configuring DMRS in each of at least two frequency domain ranges when repeated transmission of frequency hopping in the at least two frequency domain ranges;

and 3, when the precoding is changed, determining the time domain period of the DMRS according to the time domain period of the precoding change.

Based on condition 1, the transmission phase changes when transmitting across slots (i.e., across two or more slots), and therefore DRMS cannot be shared for repeated transmission across slots, otherwise the channel estimation may deviate. For repeated transmission in Slot, the channels are continuous, and the DMRS can be shared, so that the cost of the DMRS is reduced.

That is, the repeated transmission in the same Slot may include at least one DMRS, for example, the repeated transmission in the same Slot may include the DMRS only in the first repeated transmission thereof. And repeating transmission of different slots, wherein each slot at least comprises one DMRS. For example, referring to fig. 5, the first retransmission in each slot contains a DRMS, i.e., the retransmission in fig. 5 spans slot n and slot n+1, n being an integer; then the transmission DMRS is set in the first repeat transmission of slot n and slot n+1, and the DMRS may be at the beginning of the repeat transmission, i.e., the shaded portion in the figure; in addition, each block in fig. 5 represents a repetition of transmission.

It should be understood that fig. 5 is merely an example, and that more slots may exist in the actual process, which is not exhaustive.

Regarding condition 2, in the multiple repetition transmission, frequency hopping occurs, and there is a difference in channel conditions because the repetition transmission occupies different frequency domain positions. Therefore, repeated transmission occupying different frequency domain positions requires independent configuration of DMRS.

Specifically, one DMRS is configured per hop. One DMRS is configured for repeated transmission occupying the same frequency domain location, and typically may be configured in a first repeated transmission in the same frequency domain. In addition, the repeated transmission occupying different frequency domain positions independently configures the DMRS.

For example, referring to fig. 6, taking a time slot n as an example, two frequency domain positions are occupied by repeated transmission in the time slot n, the upper part of the figure is understood to be a first frequency domain position for clarity of illustration, and the lower part of the figure is understood to be a second frequency domain position; based on condition 2, a DMRS may be set once at a first one of the repeated transmissions at a first frequency domain location and a DMRS may be set once at a first one of the repeated transmissions at a second frequency domain location; time slot n+1 is similar to time slot n and will not be described again.

Regarding condition 3, the time domain period of the DMRS is configured to coincide with the time domain period of precoding (precoding). And, further, the DMRS is configured for the first repeated transmission in each time domain period. For example, precoding changes every two symbols, i.e., one DMRS is configured every 2 symbols.

For the above 3 conditions of the present scenario, it should be further noted that the above 3 conditions may be used alone or in combination. For example, the time domain period of the DMRS may be determined in combination with the precoded time domain period for the repeated transmission, or may be further configured in combination with the repetition of frequency hopping. Alternatively, the configuration may be performed in combination with a cross-slot case and a frequency hopping case in the frequency domain. The combined use case is still handled with its specific provision for each condition, and therefore will not be described in detail.

In addition, regarding the configuration conditions of the DMRS in scenario 2, the configuration may be configured by the network side, typically, may be configured by higher layer signaling.

Finally, in the solution provided in this embodiment, the above scenarios 1 and 2 may also be used in combination, that is, the resource location of the DMRS may be determined by combining the indication of DCI and/or RRC signaling and the configuration condition of the DMRS.

For example, one DMRS is configured every 2 repeated transmissions through RRC signaling configuration; and simultaneously, when a plurality of repeated transmissions cross slots in combination with the condition 1 in the configuration conditions of the DMRS in the scene 2, configuring an additional DMRS for the first repeated transmission of the cross Slot. It may be understood that the configuration period indicating the DMRS in the DMRS configuration sent by the RRC signaling for the terminal device may be configured for one DMRS per 2 repeated transmissions. In addition, when the repeated transmission is the repeated transmission of the cross time slot (cross slot), if 4 repeated transmissions exist in the first slot and one repeated transmission exists in the second slot, one DMRS can be configured for the first repeated transmission in the first slot, and then one DMRS can be configured for the third repeated transmission in the first slot; one DMRS is reconfigured as an additional DMRS in one repeated transmission of the second slot.

For another example, one DMRS is configured every 2 repeated transmissions through DCI signaling, and when multiple repeated transmissions cross slots, one DMRS is configured in the first repeated transmission of each Slot in the cross Slot, and the DMRS is configured in the subsequent repeated transmissions in the Slot according to a configuration period.

Based on the determined DMRS configuration, a resource location corresponding to the DMRS may be determined, for example, where to set the DMRS in which repeated transmission, and finally, the DMRS may be sent based on the determined resource location corresponding to the DMRS.

By adopting the scheme, the configuration of the DMRS in repeated transmission can be determined according to the indication information and/or the configuration conditions, and finally the terminal equipment can determine the resource position of the DMRS according to the configuration of the DMRS so as to transmit the DMRS. Therefore, the channel estimation performance can be ensured, and redundant DMRS overhead caused by setting the DMRS in each repeated transmission can be avoided.

Embodiment II,

The embodiment provides a DMRS configuration method, which is applied to a network device, as shown in fig. 7, and includes:

step 501: and determining the configuration of the terminal equipment for the DMRS in the repeated transmission based on the at least one indication information and/or the at least one DMRS configuration condition.

Regarding the foregoing determination of 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 present embodiment may provide the following several processing scenarios:

scene 1,

And indicating the configuration of the DMRS in repeated transmission to the terminal equipment through downlink control information DCI or RRC signaling.

when the format of the DCI is the first type format, configuring the DMRS in repeated transmission by default terminal equipment to send the DMRS in each repeated transmission;

when the DCI format is the second type format, adding the configuration of the DMRS in repeated transmission in a designated domain of the DCI, and sending the DCI to terminal equipment;

wherein the first type of format is different from the second type of 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, what specific formats corresponding to the two types of formats respectively may be determined according to preset rules between the terminal and the network side, the foregoing is only a division example, and in actual processing, the first type of format may be other settings, which only needs to ensure that the second type of format is different from the first type of format, which is not exhaustive.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Another way of sub-scenario 1 is to add the configuration of DMRS in repeated transmission in the specified field of the DCI without distinguishing the format of the DCI, and send the DCI to the terminal device.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Sub-scenario 2, semi-static indication, i.e. DMRS configuration in repeated transmission indicated by RRC signaling.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Scene 2,

condition 1, when the repeated transmission is a repeated transmission spanning at least two time slots, determining that the terminal device configures at least one DMRS in each of the at least two time slots;

condition 2, determining that the terminal equipment configures the DMRS in each of at least two frequency domain ranges when the repeated transmission of frequency hopping is performed in the at least two frequency domain ranges;

And 3, when the precoding is changed, determining the time domain period of the terminal equipment for transmitting the DMRS according to the time domain period of the precoding change.

Based on the determined DMRS configuration, a resource position corresponding to the DMRS transmitted by the terminal device may be determined, for example, where the DMRS is set at a repeated transmission position, and finally, based on the determined resource position corresponding to the DMRS, the DMRS transmitted by the terminal device may be detected and obtained.

Third embodiment,

The present embodiment provides a terminal device, as shown in fig. 8, including:

a first processing unit 61, based on at least one indication information and/or at least one DMRS configuration condition, determines a configuration for a demodulation reference channel DMRS in repeated transmission; and determining the resource position of the transmission DMRS based on the configuration of the DMRS in the repeated transmission.

The present embodiment may provide the following several processing scenarios:

scene 1,

The terminal device further includes:

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

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

a first processing unit 61, when the format of the DCI is a first type format, determining that the DMRS is configured to transmit the DMRS in each repeated transmission in repeated transmission;

Wherein the first type of format is different from the second type of format.

The first type Format may be DCI Format 0_0 or 1_0, and the second type Format may be DCI Format0_1 or 1_1. It should be understood that, what specific formats corresponding to the two types of formats respectively may be determined according to preset rules between the terminal and the network side, the foregoing is only a division example, and in actual processing, the first type of format may be other settings, which only needs to ensure that the second type of format is different from the first type of format, which is not exhaustive.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Another way of sub-scenario 1 is not to distinguish the format of the DCI, and the first processing unit 61 obtains the configuration of the DMRS in repeated transmission from the specified field of the DCI.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

The sub-scenario 2, semi-static indication, i.e. 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:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Scene 2,

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

Fourth embodiment,

The present embodiment provides a network device, as shown in fig. 9, including:

a second processing unit 71, configured to determine a 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 device further includes:

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

the second processing unit 71 is configured to send the DMRS in each repeated transmission by default terminal equipment when the format of the DCI is a first type format;

when the DCI format is the second type format, adding the configuration of the DMRS in repeated transmission in a designated domain of the DCI;

wherein the first type of format is different from the second type of format.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Another way of sub-scenario 1 is not to distinguish the format of the DCI, the second processing unit 71 adds the configuration of the DMRS in repeated transmission in the specified field 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:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

The configuration of the DMRS includes at least one of:

whether each repeated transmission contains a DMRS;

a configuration period of the DMRS;

pattern of DMRS.

Scene 2,

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

Fig. 10 is a schematic structural diagram of a communication device 1000 provided in the embodiment of the present application, where the communication device may be a terminal device or a network device as described in the foregoing embodiment. The communication device 1000 shown in fig. 10 comprises a processor 1010, from which the processor 1010 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 10, the communication device 1000 may also include a memory 1020. Wherein the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in embodiments of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into 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, and in particular, may send information or data to other devices or receive information or data sent by other devices.

The transceiver 1030 may include, among other things, a transmitter and a receiver. The transceiver 1030 may further include an antenna, the number of which may be one or more.

Optionally, the communication device 1000 may be specifically a network device in the embodiment of the present application, and the communication device 1000 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 1000 may be specifically a terminal device or a network device in the embodiments of the present application, and the communication device 1000 may implement corresponding flows implemented by a mobile terminal/terminal device in each method in the embodiments of the present application, which are not described herein for brevity.

Fig. 11 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 1100 shown in fig. 11 includes a processor 1110, and the processor 1110 may 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. 11, the chip 1100 may also include a memory 1120. Wherein the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in embodiments of the present application.

Wherein the memory 1120 may be a separate device from the processor 1110 or may be integrated into the processor 1110.

Optionally, the chip 1100 may also include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the chip 1100 may also include an output interface 1140. Wherein the processor 1110 may control the output interface 1140 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

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

Fig. 12 is a schematic block diagram of a communication system 1200 provided in 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.

The terminal device 1210 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1220 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment 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 implemented by integrated logic circuits of hardware in a processor or instructions in software form. The 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 off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks 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 a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct 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 memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

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

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a terminal device in the embodiments of the present application, and the computer program causes a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein 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 a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

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

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

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 solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

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

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 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 in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely 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 think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to 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 DMRS configuration method applied to a terminal device, the method comprising:

determining a configuration for a demodulation reference channel (DMRS) in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition; wherein, for repeated transmission across at least two slots, one DMRS is configured in each of the at least two slots; the configuration of the DMRS includes: pattern of DMRS; the repeated transmission is repeated transmission of a short time slot;

and determining the resource position of the transmission DMRS based on the configuration of the DMRS in the repeated transmission.

2. The method of claim 1, wherein the determining a configuration for a demodulation reference channel, DMRS, in a repeated transmission based on at least one indication information and/or at least one DMRS configuration condition comprises:

Receiving downlink control information DCI and/or RRC signaling sent by a network side;

and determining the configuration of the DMRS in repeated transmission based on the DCI and/or the RRC signaling.

3. The method of claim 2, wherein the determining a configuration of DMRS in repeated transmissions based on the DCI and/or RRC signaling comprises:

and acquiring the configuration of the DMRS in repeated transmission from the designated domain of the DCI.

4. The method of claim 3, wherein the determining the configuration of the DMRS in repeated transmissions based on the DCI or RRC signaling further comprises:

wherein the first type of format is different from the second type of format.

5. The method of any of claims 1-4, wherein the configuration of the DMRS further comprises at least one of:

whether each repeated transmission contains a DMRS;

configuration period of DMRS.

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

Configuring a DMRS in each of at least two frequency domain ranges when repeated transmission of frequency hopping in the at least two frequency domain ranges;

and when the precoding is changed, determining the time domain period of the DMRS according to the time domain period of the precoding change.

7. A DMRS configuration method applied to a network device, the method comprising:

determining the configuration of the terminal equipment for the DMRS in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition; wherein, for repeated transmission across at least two slots, one DMRS is configured in each of the at least two slots; the configuration of the DMRS includes: pattern of DMRS; the repeated transmission is a short-slot repeated transmission.

8. The method of claim 7, wherein the determining, based on at least one indication information and/or at least one DMRS configuration condition, a configuration of a terminal device for DMRS in a repeated transmission comprises:

9. The method of claim 8, wherein the indicating the configuration of the DMRS in the repeated transmission to the terminal device through downlink control information DCI or RRC signaling comprises:

And adding the configuration of the DMRS in repeated transmission in the designated domain of the DCI, and sending the DCI to terminal equipment.

10. The method of claim 8, wherein when the configuration of the DMRS in the repeated transmission is indicated to the terminal device through downlink control information DCI or RRC signaling, the method further comprises:

wherein the first type of format is different from the second type of format.

11. The method of any of claims 7-10, wherein the configuration of the DMRS further comprises at least one of:

whether each repeated transmission contains a DMRS;

configuration period of DMRS.

12. The method of claim 7, wherein the method further comprises:

when the repeated transmission is carried out in the frequency hopping mode in at least two frequency domain ranges, determining that the terminal equipment configures the DMRS in each frequency domain range of the at least two frequency domain ranges;

And when the precoding is changed, determining the time domain period of the terminal equipment for transmitting the DMRS according to the time domain period of the precoding change.

13. A terminal device, the terminal device comprising:

a first processing unit, configured to determine a configuration for a demodulation reference channel DMRS in repeated transmission based on at least one indication information and/or at least one DMRS configuration condition; wherein, for repeated transmission across at least two slots, one DMRS is configured in each of the at least two slots; the configuration of the DMRS includes: pattern of DMRS; the repeated transmission is repeated transmission of a short time slot; and determining the resource position of the transmission DMRS based on the configuration of the DMRS in the repeated transmission.

14. The terminal device of claim 13, wherein the terminal device further comprises:

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

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

15. The terminal device of claim 14, wherein the first processing unit is configured to obtain a configuration of the DMRS in repeated transmission from a designated field of the DCI.

16. The terminal device of claim 14, wherein the first processing unit is configured to determine, when the format of the DCI is of a first type, that the DMRS is configured to transmit the DMRS in each of the repeated transmissions;

wherein the first type of format is different from the second type of format.

17. The terminal device of any of claims 13-16, wherein the configuration of the DMRS further comprises at least one of:

whether each repeated transmission contains a DMRS;

configuration period of DMRS.

18. The terminal device of claim 13, wherein the first processing unit is further configured to:

19. A network device, the network device comprising:

a second processing unit, configured to determine, based on at least one indication information and/or at least one DMRS configuration condition, a configuration of the terminal device for the DMRS in the repeated transmission; wherein, for repeated transmission across at least two slots, one DMRS is configured in each of the at least two slots; the configuration of the DMRS includes: pattern of DMRS; the repeated transmission is a short-slot repeated transmission.

20. The network device of claim 19, wherein the network device further comprises:

and the second communication unit is used for indicating the configuration of the DMRS in repeated transmission to the terminal equipment through downlink control information DCI or RRC signaling.

21. The network device of claim 20, wherein the second processing unit is configured to add a configuration of DMRS in repeated transmissions in a designated field of the DCI;

the second communication unit is configured to send the DCI to a terminal device.

22. The network device of claim 20, wherein the second processing unit is configured, when the format of the DCI is a first type of format, to default configuration of the DMRS in repeated transmissions by the terminal device to send the DMRS in each repeated transmission;

wherein the first type of format is different from the second type of format.

23. The network device of any of claims 19-22, wherein the configuration of the DMRS further comprises at least one of:

whether each repeated transmission contains a DMRS;

configuration period of DMRS.

24. The network device of claim 19, wherein the second processing unit is further configured to:

25. A terminal device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is adapted to store a computer program, said processor being adapted to invoke and run the computer program stored in said memory, performing the steps of the method according to any of claims 1-6.

26. A network device, comprising: a processor and a memory for storing a computer program capable of running on the processor,

wherein the memory is adapted to store a computer program, said processor being adapted to invoke and run the computer program stored in said memory, performing the steps of the method according to any of claims 7-12.

27. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 1-6.

28. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 7-12.

29. A computer readable storage medium for storing a computer program which causes a computer to perform the steps of the method according to any one of claims 1-12.

30. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1-12.