CN114765505B

CN114765505B - Method for transmitting demodulation reference signal (DMRS), method for receiving DMRS and device for receiving DMRS

Info

Publication number: CN114765505B
Application number: CN202110055884.0A
Authority: CN
Inventors: 费永强; 邢艳萍; 高雪娟
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2023-08-15
Anticipated expiration: 2041-01-15
Also published as: CN114765505A

Abstract

The embodiment of the application provides a method for transmitting and receiving demodulation reference signal (DMRS) and a device thereof. The method comprises the steps of determining time-frequency resources for bearing a transmission block TB, and dividing the time-frequency resources into at least one resource whole; the overall resource partitioning rule at least comprises the following steps: taking the resources with the same frequency domain resources as a whole resource; determining time-frequency resources for bearing the DMRS in the whole resources; and based on the time-frequency resource of the bearing transmission block TB and the time-frequency resource of the bearing DMRS, sending the TB and the DMRS in a Physical Uplink Shared Channel (PUSCH) of a plurality of time slots slot. The embodiment of the application can perform joint channel estimation, unified decoding and demodulation by jointly considering the resources in the multi-time-slot PUSCH, reduce unnecessary DMRS transmission, increase the resources available for transmitting data, and reduce the code rate, thereby improving the coverage performance.

Description

Method for transmitting demodulation reference signal (DMRS), method for receiving DMRS and device for receiving DMRS

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method and a device for transmitting and receiving a demodulation reference signal DMRS.

Background

In a 5G NR (New Radio) system, with an increase in the deployment frequency of a wireless system, propagation loss of a wireless signal is increased, resulting in a reduction in the transmission distance of the signal and a decrease in coverage performance of a network. Especially for uplink transmission, that is, transmission sent by a User Equipment (UE) and received by a base station (g Node B, gNB), the coverage of an uplink channel is more limited than that of a downlink because the UE has a lower transmission power.

The physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) is an important uplink transport channel in NR. In general, the gNB may schedule the UE to transmit PUSCH through downlink control information (Downlink Control Information, DCI), or configure semi-static resources through radio resource control (Radio Resource Control, RRC) signaling for the UE to autonomously transmit PUSCH. And the data information such as the PUSCH bearing transmission blocks (Transmission Block, TB) is sent to the gNB by the UE. The UE may also transmit a demodulation reference signal (Demodulation Reference Signal, DMRS) when transmitting PUSCH, and the gNB may perform channel estimation and data demodulation based on the DMRS transmitted by the UE.

PUSCH in existing NR is transmitted in only one slot (slot). Even if the PUSCH is repeatedly transmitted, each repetition needs to include the DMRS and the complete channel coding, so that each repetition can be normally demodulated and decoded in theory, and each repetition can be regarded as an independent PUSCH in one time slot. The NR will now support one TB to transmit in "multislot PUSCH", but there is currently no solution for how to transmit DMRS in "multislot PUSCH".

Disclosure of Invention

Aiming at the problems existing in the prior art, the embodiment of the application provides a method for sending and receiving a demodulation reference signal (DMRS) and a device thereof.

In a first aspect, an embodiment of the present application provides a method for sending a DMRS, which is applied to a UE, including:

determining a time-frequency resource carrying a transmission block TB, and dividing the time-frequency resource into at least one resource whole; the overall resource partitioning rule at least comprises the following steps: taking the resources with the same frequency domain resources as a whole resource;

determining time-frequency resources for bearing the DMRS in the whole resources;

and based on the time-frequency resource of the bearing transmission block TB and the time-frequency resource of the bearing DMRS, sending the TB and the DMRS in a Physical Uplink Shared Channel (PUSCH) of a plurality of time slots slot.

Optionally, the partitioning rule of the whole resource further includes: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource.

Optionally, the partitioning rule of the whole resource further includes: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource.

Optionally, determining a time-frequency resource carrying the DMRS in each resource whole by an index of a first symbol in the resource whole, an interval between the DMRS and a DMRS symbol number of the RS; or alternatively

And determining the time-frequency resource carrying the DMRS in the whole resources based on a preset configuration table.

Optionally, the determining the time-frequency resource for carrying the DMRS in each resource whole based on the index of the first symbol of the DMRS in the resource whole, the interval between the DMRS and the DMRS symbol number specifically includes:

aiming at the situation that the DMRS is single-symbol DMRS, a symbol n+m in each resource whole is used as a time domain symbol where the DMRS symbol is located, wherein n is an index of a first symbol of the DMRS in one resource whole, m is a symbol interval among the DMRSs, k is a DMRS symbol number, and n, m and k are all non-negative integers; or alternatively

For the case that the DMRS is a dual-symbol DMRS, the symbol (n, n+1) +m×k in each resource integer is used as the time domain symbol where the DMRS symbol is located, where n is the index of the first symbol of the DMRS in one resource integer, m is the symbol interval between DMRS, k is the DMRS symbol number, and n, m, k are all non-negative integers.

Optionally, the determining the time-frequency resource for carrying the DMRS in each resource whole includes:

and if the time domain resource segment which is continuous in time domain and does not comprise any DMRS exists in the whole resource, carrying the DMRS in the predefined symbol position in the time domain resource segment.

Optionally, the determining the time-frequency resource of the bearer transport block TB and dividing the time-frequency resource into at least one resource whole specifically includes:

determining a time domain resource of a multi-slot PUSCH and a to-be-selected set of time-frequency resources for bearing the DMRS, wherein the time domain resource of the multi-slot PUSCH and the to-be-selected set of the time-frequency resources for bearing the DMRS are the same as the results of the time domain resource and the time-frequency resources for bearing the DMRS determined based on a repetition type B and a PUSCH mapping type B of PUSCH repeated transmission;

the determining the time-frequency resource for bearing the DMRS in the whole resources specifically comprises the following steps:

determining a time-frequency resource for bearing the DMRS in the to-be-selected set based on a screening rule; wherein the screening rules include any one of the following:

rule one: in the same frequency domain resource, only reserving the DMRS on the first available symbol in each time unit;

rule II: in the same frequency domain resource, only reserving the DMRS on the first available symbol in each time domain resource segment which is continuous in time domain;

rule III: and reserving the DMRS meeting any one of the following conditions in the same frequency domain resource: condition 1, the DMRS is the DMRS of the first available symbol in one time unit; condition 2, the DMRS is the DMRS in the first available symbol in each time domain resource segment that is contiguous in time domain.

Optionally, the time unit is greater than or equal to one slot.

Optionally, the time-domain continuous resources include:

continuous and uninterrupted time domain resources; or alternatively

Time domain resources that are continuous and have intervals not exceeding a threshold N, which is a preset value or PUSCH-based subcarrier interval determination.

In a second aspect, an embodiment of the present application provides a method for receiving a DMRS, which is applied to a network device, including:

receiving a transport block TB and a DMRS transmitted by User Equipment (UE) in a Physical Uplink Shared Channel (PUSCH) of a plurality of time slots; the UE determines the time-frequency resource carrying the transport block TB and the DMRS according to the following steps:

and determining the time-frequency resources carrying the DMRS in the whole resources.

Optionally, the time unit is greater than or equal to one slot.

In a third aspect, an embodiment of the present application further provides a user equipment, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor, configured to read the computer program in the memory and implement the steps of the DMRS transmission method according to the first aspect.

In a fourth aspect, an embodiment of the present application further provides a network device, including a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the DMRS receiving method according to the second aspect as described above.

In a fourth aspect, an embodiment of the present application further provides a processor-readable storage medium, where a computer program is stored, where the computer program is configured to cause the processor to perform the steps of the method for transmitting a DMRS according to the first aspect or the method for receiving a DMRS according to the second aspect.

According to the method and the device for sending and receiving the demodulation reference signal (DMRS), provided by the embodiment of the application, the resources in the multi-time slot PUSCH are considered jointly to perform joint channel estimation, unified decoding and demodulation, so that unnecessary DMRS transmission is reduced, resources available for transmitting data are increased, the code rate is reduced, and the coverage performance is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of combining different retransmission types and PUSCH mapping types according to an embodiment of the present application;

fig. 2 is a schematic diagram of transmitting the same TB in a PUSCH of multiple slots according to an embodiment of the present application;

fig. 3 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 4 is a flow chart of a DMRS transmission method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application;

Fig. 6 is a second schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application;

fig. 7 is a third schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application;

fig. 8 is a schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application;

fig. 9 is a fifth schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application;

fig. 10 is a schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application;

fig. 11 is a flowchart of a method for receiving DMRS according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present application;

fig. 13 is a schematic diagram of a network device structure according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a transmitting device of a DMRS according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a DMRS receiving apparatus according to an embodiment of the present application.

Detailed Description

In the embodiment of the application, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the existing NR, there are two mapping types (mapping types) for PUSCH: one Type a and one Type B.

For PUSCH mapping Type A, the starting position of the PUSCH in a slot is always the first symbol, and the starting position of the DMRS corresponding to the PUSCH is also fixed, for example, in a typical case, regardless of frequency hopping, the first symbol of the DMRS is always fixed on a symbol with index of 2 or 3 in a slot (14 symbols are included in a slot, the symbol index is 0,1,2 …, and the symbol with index of 2 or 3 corresponds to the 3 rd or 4 th symbol in a slot).

For PUSCH mapping Type B, the starting position of the PUSCH in one slot is PUSCH resources that the gNB actually dynamically schedules/semi-statically configures through DCI, and the first symbol of the DMRS is always the first symbol of the PUSCH.

In addition, if the gNB configures the DMRS for the UE to additionally transmit, in one slot, the UE will additionally transmit the DMRS beyond the first DMRS, where the symbol position of the additionally transmitted DMRS is determined according to a predefined rule, the length ld (symbol number) of the PUSCH, and other information.

In addition, in the existing NR, the repeated transmission of the PUSCH is also supported. The repetition type (repetition type) is also divided into two types: one Type a and one Type B.

For Repetition type A, the symbol position and length occupied by the repeated PUSCH in each slot are the same, and the DMRS position is also the same; repetition type A may be combined with PUSCH mapping type A or PUSCH mapping type B.

For Repetition type B, each repeated PUSCH is as close as possible in the time domain; if one "nominal repetition" overlaps with resources not available for PUSCH transmission (e.g., downlink symbols) or crosses a slot boundary, it will split into two or more "actual repetitions".

Fig. 1 is a schematic diagram of combining different retransmission types with PUSCH mapping types, provided in an embodiment of the present application, as shown in fig. 1, for an example of a repetition type b+pusch mapping type B, nominal repetition is sent 3 times, and nominal repetition PUSCH1 is divided into two actual repetitions due to crossing a slot boundary, and finally the actual repetition is sent 4 times; for each actual repetition, the DMRS is transmitted at its first bit.

It should be noted that, in the embodiment of the present application, a TB is transmitted in a PUSCH with multiple slots, fig. 2 is a schematic diagram of the same TB transmitted in a PUSCH with multiple slots, which is different from the transmission mode of the repeated transmission, but is similar to the repeated transmission in terms of resource utilization.

The NR is currently about to support one TB transmission in "multislot PUSCH". One TB is transmitted in the PUSCH with multiple time slots, so that the code length can be increased while the narrowband transmission and the higher transmission power spectrum density are ensured, and the coding gain is obtained, thereby improving the coverage performance. However, there is currently no scheme for NR how to transmit DMRS in "multislot PUSCH", as shown in fig. 2.

Aiming at the situation that the prior NR technology does not support a multi-time slot PUSCH transmission mechanism and does not have a corresponding DMRS transmission method, if the prior repeated transmission mechanism is used for determining the DMRS resources, the redundancy of the DMRS and the waste of the resources can occur. The embodiments of the present application provide a solution, which can perform joint channel estimation, unified decoding and demodulation by jointly considering resources in a multi-slot PUSCH, reduce unnecessary DMRS transmission, increase resources available for transmitting data, and reduce code rate, thereby improving coverage performance.

The method and the device provided by the embodiments of the present application are based on the same application conception, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.

Fig. 3 is a schematic diagram of an application scenario provided in an embodiment of the present application, where the application scenario in each embodiment of the present application may be mainly applied to a 5G NR system, and includes a network device and a terminal device. Of course, the embodiment of the present application may also be applied to other systems, as long as the terminal device needs to send an uplink signal to the network device. As shown in fig. 3, in the application scenario of the embodiments of the present application, a plurality of UEs including UE1 and UE2 initiate random access to the gNB, and apply for a wireless network connection service; the gNB receives the random access request from the at least one UE and wirelessly services it. And the gNB and the UE1 and the UE2 conduct data interaction and transmission through wireless communication.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, suitable systems may be 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) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.

The terminal device (e.g., UE) according to the embodiments of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connection, or other processing device connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited in this respect.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node, which may also be geographically separated.

Fig. 4 is a flowchart of a DMRS sending method provided by an embodiment of the present application, where, as shown in fig. 4, the method may be applied to a UE, and the method at least includes the following steps:

step 400, determining a time-frequency resource carrying a transmission block TB, and dividing the time-frequency resource into at least one resource whole; the overall resource partitioning rule at least comprises the following steps: taking the resources with the same frequency domain resources as a whole resource;

the existing NR will support one TB to transmit in the "multi-slot PUSCH". One TB is transmitted in the PUSCH with multiple time slots, so that the code length can be increased while the transmission power spectrum density is ensured by narrowband transmission, and the coding gain is obtained, thereby improving the coverage performance. Embodiments of the present application provide solutions for how to transmit DMRS in a "multi-slot PUSCH".

Specifically, the network device, e.g., the gNB, may configure, e.g., through RRC signaling, that the UE may make "multi-slot PUSCH transmission one TB". The gNB schedules the UE to transmit the PUSCH of multiple slots by transmitting DCI to the UE.

After receiving the scheduling message DCI, the UE may determine the time-frequency resource of the bearer transport block TB according to the indication of the predefined/RRC configuration/DCI. For example, for time domain resources, the network device may semi-statically configure the slot number of the UE carrying the TB by using an RRC configuration method, and instruct the domain by using the time domain resource allocation in the DCI to instruct the starting symbol and length of the time domain resource occupied by the TB in each slot; for the frequency domain resources, the network device may indicate the physical resource blocks occupied by the TBs through the frequency domain resource allocation indication field in the DCI.

After determining the time-frequency resource for bearing a TB, the UE according to the method provided by the embodiment of the application can divide the time-frequency resource for bearing the TB, and can be particularly divided into one or more resource integers. The partitioning rule of the whole resource at least comprises: and taking the resources with the same frequency domain resources as a whole resource.

Step 401, determining time-frequency resources carrying DMRS in the whole resources;

after determining the time-frequency resource carrying one TB and dividing the whole resources, the UE can further determine the time-frequency resource for carrying the DMRS in each whole resource.

Step 402, based on the time-frequency resource of the bearing transport block TB and the time-frequency resource of the bearing DMRS, the TB and the DMRS are sent in the PUSCH of the physical uplink shared channel of the slot of a plurality of slots.

After the time-frequency resource of the bearing TB and the time-frequency resource of the bearing DMRS are determined, the UE can send the one TB and the corresponding DMRS in the PUSCHs of the slots based on the determined time-frequency resource of the bearing transmission block TB and the determined time-frequency resource of the bearing DMRS, and correspondingly, the gNB receives the PUSCHs of the multiple slots sent by the UE.

According to the DMRS sending method provided by the embodiment of the application, the time-frequency resources carrying the transmission block TB are used as a resource integral division rule according to the same frequency domain resources, at least one resource integral is divided, after the time-frequency resources carrying the DMRS are determined, one TB is transmitted in a multi-time-slot PUSCH, the DMRS sending method is provided, and the resources in the multi-time-slot PUSCH are jointly considered to perform joint channel estimation, unified decoding and demodulation, so that unnecessary DMRS transmission is reduced, resources available for transmitting data are increased, the code rate is reduced, and the coverage performance is improved.

On the basis of the above method embodiment, the dividing rule of the whole resource may further include: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource. In the embodiment of the application, the resources which are the same in frequency domain resources and are continuous in time domain are taken as a whole resource, and the time domain resources of the DMRS are determined by applying a predefined rule/pattern in each whole resource, so that the determination and the transmission of the DMRS resources in the multi-time slot PUSCH are realized.

Further, the predefined rule/pattern determining the time domain resource of the DMRS may include any of the following ways:

mode one: and determining the time-frequency resource carrying the DMRS in each resource whole based on the index of the first symbol of the DMRS in the resource whole, the interval between the DMRSs and the symbol number of the DMRS.

Fig. 5 is one of schematic diagrams of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application, as shown in fig. 5, in consideration of PUSCH non-hopping transmission, frequency domain resources of PUSCH in all slots are the same, so that only the basis of whether the time domain is continuous or not is needed as a whole for division.

As shown in fig. 5, it is assumed that the multislot PUSCH spans 2 slots altogether, and is not continuous in the time domain due to the presence of symbols (Invalid part in the figure) that are not available for uplink transmission in the 2 nd slot, so that it is divided into two resource integers, namely, resource integer 1 and resource integer 2; in each resource, a time domain resource (symbol) where the DMRS is located is determined by a specific pattern.

The determining the time-frequency resource for bearing the DMRS in each resource whole based on the index of the first symbol of the DMRS in the resource whole, the interval between the DMRS and the DMRS symbol number may specifically include:

for the case that the DMRS is a single-symbol DMRS, the symbol n+m×k in each resource integer is used as the time domain symbol where the DMRS symbol is located, where n is the index of the first symbol of the DMRS in one resource integer, m is the symbol interval between DMRS, k is the DMRS symbol number, and n, m, k are all non-negative integers.

The predefined rule/pattern may specifically be that a symbol n+m×k in each resource whole is taken as a time domain symbol where the DMRS symbol is located, where n is an index of a first symbol of the DMRS in one resource whole, m is a symbol interval between DMRS, k is a DMRS symbol number, and n, m, k are all non-negative integers. For example, in fig. 5, the first DMRS symbol is always the first symbol (the symbol with index 0) in the whole resource, and then assuming that one DMRS symbol appears every 7 symbols, the symbol index of the symbol in which the DMRS is located in the whole resource satisfies 0+7×k. Since DMRS needs to be within the symbol number range of each resource whole, the index n+m×k does not exceed the symbol range of the resource whole where it is located. In the above figure, DMRS indexes of resource whole 1 are 0 and 7 (corresponding to n=0, m= 7,k =0, 1 …), and DMRS index of resource whole 2 is 0 (corresponding to n=0, m= 7,k =0).

For another example, the determining, based on the index of the first symbol of the DMRS in the whole resource, the interval between the DMRS, and the DMRS symbol number, the time-frequency resource for carrying the DMRS in each whole resource may specifically further include:

for the case that the DMRS is a dual-symbol DMRS, the symbol (n, n+1) +m×k in each resource integer is used as the time domain symbol where the DMRS symbol is located, where n is the index of the first symbol of the DMRS in one resource integer, n+1 is the index of the second symbol in one resource integer, the dual-symbol DMRS occupies the first two symbols in one resource integer, m is the symbol interval between DMRS, k is the DMRS symbol number, and n, m, k are all non-negative integers.

The specific pattern may also be the symbol (n, n+1) +m×k in each whole as the time domain symbol where the DMRS symbol is located. The difference from the above example is that the DMRS in the above example is a single symbol DMRS, whereas the DMRS in this example is a dual symbol DMRS.

The specific pattern may be predefined, or the network device may be sent by broadcasting in a system information type, or the network device may configure the UE through a specific higher layer signaling (such as RRC signaling), or may be indicated when dynamically scheduling PUSCH through DCI, which is not limited in this embodiment of the present application.

Fig. 6 is a second schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application, where, as shown in fig. 6, PUSCH resources satisfying the same frequency domain resource and continuous time domain simultaneously are only used as a whole resource when PUSCH frequency hopping transmission is considered. An example is given in fig. 6. Assuming that the multi-slot PUSCH spans 4 slots altogether, the first 2 slots belong to the same hop, the frequency domain resources thereof are the same, and the last 2 slots belong to another hop, the frequency domain resources thereof are different from those of the previous hop, and the symbols (Invalid part in the figure, i.e. Invalid part) unavailable for uplink transmission exist in the 3 rd slot, so that the time domain is not continuous any more. Therefore, the method is divided into 3 resource integers, namely a resource integer 1, a resource integer 2 and a resource integer 3; in each resource, a time domain resource (symbol) where the DMRS is located is determined by a specific pattern.

Mode two: and determining the time-frequency resource carrying the DMRS in the whole resources based on a preset configuration table. Specifically, the DMRS symbols in each resource ensemble may be determined, for example, based on Table 6.4.1.1.3-3 (or other tables/rules) in NR protocol TS 38.211. It should be noted that the table defines only DMRS symbol positions in one slot, and if the number of symbols in the whole of one resource exceeds the number of symbols in one slot, the time domain cycle may be performed according to the pattern defined in the table, so as to extend into the time domain resource of more than one slot.

In the embodiment of the application, the time-frequency resources with the same time-domain continuous and frequency-domain resources in the multi-time-slot PUSCH transmission are regarded as a whole resource, and the DMRS time-domain pattern is designed on the basis, so that inaccurate channel estimation caused by signal phase jump due to time-domain discontinuity can be prevented, the DMRS transmission resources are saved on the basis of ensuring the channel estimation performance and the decoding performance and are used for transmitting data, the coding performance is improved, and the coverage performance is further improved.

On the basis of the above method embodiment, the dividing rule of the whole resource may further include: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource. In the embodiment of the present application, on the basis of the above embodiment, limitation is also performed in the time domain, that is, only in each time unit, the resources that are the same in the frequency domain and are continuous in the time domain are taken as a whole resource, and a predefined rule is applied in each whole resource to determine the time domain resource of the DMRS. Wherein, a time unit is greater than or equal to a slot, for example, a slot group (including a plurality of slots), a slot, a subframe, a system frame, and the like.

Fig. 7 is a third schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH provided by an embodiment of the present application, as shown in fig. 7, which provides an example without frequency hopping, where it is assumed that a length of a first time unit is 2 slots, and a time domain specific time domain pattern of the DMRS is: the symbol n+m×k in one first time unit is taken as a time domain symbol where the DMRS symbol is located (n=0, m= 7,k =0, 1 …).

As shown in fig. 7, since the length of the first time unit is assumed to be 2 slots, the time-domain continuous resources in every 2 slots can be regarded as one resource whole, so that the resources in the first 2 slots are divided into a resource whole 1 and a resource whole 2, and the resources in the last 2 slots are divided into a resource whole 3 and a resource whole 4. Then, in each resource whole, determining the time domain resource where the DMRS is located in a specific pattern.

Fig. 8 is a schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH provided by an embodiment of the present application, as shown in fig. 8, which provides an example without frequency hopping, wherein, assuming that the length of the first time unit is 1 slot, the time domain specific time domain pattern of the DMRS is a pattern of Table 6.4.1.1.3-3 in TS38.211, in which PUSCH mapping type B, DMRS-additionalposition=pos 1.

In particular, the length of the first time unit may be predefined, such as predefined as one time slot or four time slots; or may be sent by the network device on a system information seed by broadcast, or configured by UE-specific higher layer signaling (e.g., RRC signaling), or indicated by DCI when dynamically scheduling PUSCH transmissions.

In the case of frequency hopping, similar to the case of frequency hopping in the embodiment provided in fig. 6, only the resources which are the same in frequency domain resource and continuous in time domain resource in one time unit are considered as one resource, and the rest of the description is identical to the above embodiment.

In the embodiment of the application, when the multi-time-slot PUSCH is transmitted, the time-frequency resources with the same time domain continuous and frequency domain resources are regarded as a whole resource in each time unit, and the DMRS time domain pattern is designed on the basis, so that inaccurate channel estimation caused by signal phase jump caused by time domain discontinuity can be prevented, the existence of the DMRS in each time unit can be ensured, the DMRS transmission resources are saved on the basis of ensuring the channel estimation performance and decoding performance of each time unit, and the DMRS transmission resources are used for transmitting data, thereby improving the coding performance and further improving the coverage performance.

On the basis of the above embodiments, the DMRS resources in the multislot PUSCH are determined and transmitted by taking all the resources with the same frequency domain resources as a whole resource and applying a predefined rule/pattern in the whole to determine the time domain resources of the DMRS. In some special cases, if the specific pattern is directly applied to determine the time domain position of the DMRS and a time domain discontinuous resource (divided into a plurality of time domain resource segments) appears, there is a possibility that no DMRS exists in part of the resource segments, and the channel estimation performance is affected. In this case, it may be additionally specified in the predefined rule/pattern that, if there is a time domain resource segment that is continuous in time domain in the whole resource and does not include any DMRS, the DMRS is carried at a predefined symbol position in the time domain resource segment, specifically, at least one symbol carrying the DMRS is included in all continuous time domain resource segments, for example, the first symbol of the time domain resource segment is used to carry the DMRS.

In this embodiment, on the one hand, the existing method may be multiplexed, and based on the mode of the repetition type b+pusch mapping type B of PUSCH repetition transmission, the time domain resource of the multi-slot PUSCH and the candidate set of the time-frequency resource carrying the DMRS are determined. The time domain resource of the multi-slot PUSCH and the candidate set of the time-frequency resource carrying the DMRS may also be determined based on other methods, and the determined candidate set is the same as the result determined by the prior art.

Wherein, a time unit is greater than or equal to a slot, for example, a slot group (including a plurality of slots), a slot, a subframe, a system frame, and the like.

The length of the time units may be predefined, or the network device may be sent by broadcast in system information, or configured by UE-specific higher layer signaling (e.g. RRC signaling), or indicated by DCI when dynamically scheduling PUSCH.

Specifically, in the embodiment of the present application, the time domain resource of the multi-slot PUSCH and the "preliminary DMRS set" may be determined according to the existing method of "repetition type b+pusch mapping type B", and then, a part of DMRS in the "preliminary DMRS set" is reserved according to the above-mentioned screening rule, and DMRS that do not meet the condition are discarded as DMRS that need to be transmitted finally. Other methods may be applied to determine the time domain resources of the multi-slot PUSCH and the "preliminary DMRS set", where the determined result is the same as the determined result of the existing method. Fig. 9 is a fifth schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application, as shown in fig. 9, where it is assumed that a "time unit" is 1 slot, and a DMRS symbol is a single symbol DMRS. In the case of no frequency hopping, part (a) in fig. 9 is an illustration of reserving DMRS in the first available symbol in each time unit, (b) is an illustration of reserving DMRS in the first available symbol in each section of "continuous time domain resource", and (c) is an illustration of reserving DMRS satisfying any one of the following conditions: 1. the DMRS is the DMRS of the first available symbol in a time unit; 2. the DMRS is an illustration of the DMRS in the first available symbol in the "each segment of contiguous time domain resource".

Fig. 10 is a sixth schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application, as shown in fig. 10, where it is assumed that a "time unit" is 1 slot, and a DMRS symbol is a dual-symbol DMRS. In the case of no frequency hopping, part (a) in fig. 10 is an illustration of reserving DMRS in the first available symbol in each time unit, (b) is an illustration of reserving DMRS in the first available symbol in each section of "continuous time domain resource", and (c) is an illustration of reserving DMRS satisfying any one of the following conditions: 1. the DMRS is the DMRS of the first available symbol in a time unit; 2. the DMRS is an illustration of the DMRS in the first available symbol in the "each segment of contiguous time domain resource".

In addition to the methods of fig. 9 and fig. 10, since there are other DMRS patterns under PUSCH mapping type B, the embodiment of the present application may also be adapted and applied in a similar manner, without limitation.

In particular, the present embodiment also provides a time domain resource indication method of the multi-slot PUSCH, which determines a set of time domain resources for transmission similar to the method in the existing repetition type B. But different from the existing repetition type B, in the embodiment of the present application, one TB is transmitted through the multi-slot PUSCH, and one TB is mapped to all repeated time-frequency resources determined according to the method for determining resources like the repetition type B, instead of each repetition carrying a TB that can be independently decoded as in the existing repetition type B, so that the technical effects of the two are different.

Regarding the case of frequency hopping, similar to the case of frequency hopping in the embodiment provided in fig. 6, only the consideration is given to taking as a whole resources that are identical in frequency domain resources and continuous in time domain resources within one time unit, and the rest of the description is identical to the above-described embodiment.

Further, in the above embodiment, the time-domain continuous resource includes:

continuous and uninterrupted time domain resources; or alternatively

In particular, "time domain contiguous" in embodiments of the present application generally refers to symbol-level contiguous, and only two symbols immediately adjacent in the time domain are considered to be contiguous symbols. The time-domain continuous resource is required as a whole, which considers that once the time-domain resource is discontinuous, the phase between the signals of the front part and the rear part is not continuous any more due to factors such as the closing of a device at the radio frequency end, and the two parts cannot use the same DMRS to perform channel estimation. But in some cases the "close proximity" condition may be suitably relaxed to a non-close proximity condition, for example, if the UE can ensure that the PUSCH transmitted in two parts of N symbols in the time domain interval still maintains the continuity of the signal phase, then two parts of the time interval not exceeding N symbols may be considered to be continuous, for example n=2 symbols, or N is varied with the subcarrier interval 15khz x 2 u (u=0, 1,2,3, … …) of the PUSCH, for example n= 2*u.

Fig. 11 is a flowchart of a method for receiving DMRS according to an embodiment of the present application, as shown in fig. 11, where the method may be applied to a network device, for example, a gNB, and the method at least includes the following steps:

step 1101, receiving a transport block TB and a DMRS sent by a user equipment UE in a physical uplink shared channel PUSCH of a plurality of slots;

the UE determines the time-frequency resource carrying the transport block TB and the DMRS according to the following steps:

On the basis of the above embodiment, the overall partitioning rule of the resource further includes: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource. In the embodiment of the application, the resources which are the same in frequency domain resources and are continuous in time domain are taken as a whole resource, and the time domain resources of the DMRS are determined by applying a predefined rule/pattern in each whole resource, so that the determination and the transmission of the DMRS resources in the multi-time slot PUSCH are realized.

On the basis of the above embodiment, the overall partitioning rule of the resource may further include: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource. In the embodiment of the present application, on the basis of the above embodiment, limitation is also performed in the time domain, that is, only in each time unit, the resources that are the same in the frequency domain and are continuous in the time domain are taken as a whole resource, and a predefined rule is applied in each whole resource to determine the time domain resource of the DMRS. Wherein, a time unit is greater than or equal to a slot, for example, a slot group (including a plurality of slots), a slot, a subframe, a system frame, and the like.

On the basis of the above embodiments, the DMRS resources in the multislot PUSCH are determined and transmitted by taking all the resources with the same frequency domain resources as a whole resource and applying a predefined rule/pattern in the whole to determine the time domain resources of the DMRS. In some special cases, if the specific pattern is directly applied to determine the time domain position of the DMRS and a time domain discontinuous resource (divided into a plurality of time domain resource segments) appears, there is a possibility that no DMRS exists in part of the resource segments, and the channel estimation performance is affected. In this case, it may be specified in the predefined rule/pattern that if there is a time domain resource segment in the whole resource that is continuous in time domain and does not include any DMRS, the DMRS is carried at a predefined symbol position in the time domain resource segment, specifically, at least one symbol carrying the DMRS is included in all continuous time domain resource segments, for example, the first symbol of the time domain resource segment is used to carry the DMRS.

For a manner of determining the time domain resources of the DMRS according to the predefined rule/pattern, reference may be made to the above UE-side embodiment, which is not described herein.

On the basis of the above embodiments, the determining the time-frequency resource of the bearer transport block TB and dividing the time-frequency resource into at least one resource whole specifically includes:

Specifically, in the embodiment of the present application, the time domain resource of the multi-slot PUSCH and the "preliminary DMRS set" may be determined according to the existing method of "repetition type b+pusch mapping type B", and then, a part of DMRS in the "preliminary DMRS set" is reserved according to the above-mentioned screening rule, and DMRS that do not meet the condition are discarded as DMRS that need to be transmitted finally. Other methods may be applied to determine the time domain resources of the multi-slot PUSCH and the "preliminary DMRS set", where the determined result is the same as the determined result of the existing method.

For the description of the UE dividing the time-frequency resources carrying the transport blocks TBs and determining the time-frequency resources carrying the DMRS in the whole of each of the resources, reference may be made to the above UE-side embodiment, which is not repeated here.

Fig. 12 is a schematic diagram of a UE structure according to an embodiment of the present application, as shown in fig. 12, the UE1200 includes a memory 1202, a transceiver 1203 and a processor 1201; wherein the processor 1201 and the memory 1202 may also be physically separate.

A memory 1202 for storing a computer program; a transceiver 1203 for transmitting and receiving data under the control of the processor 1201.

In particular, the transceiver 1203 is configured to receive and transmit data under the control of the processor 1201.

Where in FIG. 12, the bus system 1204 may comprise any number of interconnecting buses and bridges, and in particular, one or more processors represented by the processor 1201 and various circuits of memory represented by the memory 1202 are linked together. The bus system 1204 may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, and the like, which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1203 may be a number of elements, i.e. include a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including transmission media such as wireless channels, wired channels, optical cables, etc. The user interface 1205 may also be an interface capable of interfacing with an inscribed desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations.

Alternatively, the processor 1201 may be a CPU (central processing unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multi-core architecture.

The processor 1201 is configured to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions by calling a computer program stored in the memory 1202, for example:

Optionally, the time unit is greater than or equal to one slot.

Optionally, the time-domain continuous resources include:

continuous and uninterrupted time domain resources; or alternatively

The user equipment provided by the embodiment of the application can perform joint channel estimation, unified decoding and demodulation by jointly considering the resources in the multi-time slot PUSCH, reduce unnecessary DMRS transmission, increase the resources available for transmitting data, and reduce the code rate, thereby improving the coverage performance.

Fig. 13 is a schematic diagram of a network device structure according to an embodiment of the present application, as shown in fig. 13, the network device 1300 includes a memory 1302, a transceiver 1303, and a processor 1301: wherein processor 1301 and memory 1302 may also be physically separate.

A memory 1302 for storing a computer program; a transceiver 1303 for transmitting and receiving data under the control of the processor 1201.

In particular, wherein in FIG. 13, bus system 1304 may include any number of interconnected buses and bridges, one or more processors, represented in particular by processor 1301, and various circuits of the memory, represented by memory 1302. The bus system 1304 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1303 may be a plurality of elements, i.e. comprising a transmitter and a receiver, providing a unit for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 1301 is responsible for managing the bus architecture and general processing, and the memory 1302 may store data used by the processor 1301 in performing operations.

Processor 1301 may be a Central Processing Unit (CPU), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or complex programmable logic device (Complex Programmable Logic Device, CPLD), and may also employ a multi-core architecture.

Processor 1301 is operable to perform any of the methods provided by embodiments of the present application in accordance with the obtained executable instructions by invoking a computer program stored in memory 1302, for example:

Optionally, the time unit is greater than or equal to one slot.

The network equipment provided by the embodiment of the application can perform joint channel estimation, unified decoding and demodulation by jointly considering the resources in the multi-time slot PUSCH, reduce unnecessary DMRS transmission, increase the resources available for transmitting data, and reduce the code rate, thereby improving the coverage performance.

It should be noted that, the user equipment and the network equipment provided by the embodiments of the present application can implement all the method steps implemented by the embodiments of the present application, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the embodiments of the present application are omitted herein.

Fig. 14 is a schematic structural diagram of a transmitting apparatus of a DMRS according to an embodiment of the present application, as shown in fig. 14, where the apparatus may be applied to a UE, and includes a first determining module 1401, a second determining module 1402, and a transmitting module 1403, where:

a first determining module 1401, configured to determine a time-frequency resource of a bearer transport block TB, and divide the time-frequency resource into at least one resource whole; the overall resource partitioning rule at least comprises the following steps: taking the resources with the same frequency domain resources as a whole resource;

a second determining module 1402, configured to determine time-frequency resources carrying DMRS in each of the resource integers;

a sending module 1403, configured to send the TB and the DMRS in a PUSCH of a plurality of slots slot based on the time-frequency resource of the TB and the time-frequency resource of the DMRS.

Optionally, the time unit is greater than or equal to one slot.

Optionally, the time-domain continuous resources include:

continuous and uninterrupted time domain resources; or alternatively

Fig. 15 is a schematic structural diagram of a receiving apparatus of a DMRS according to an embodiment of the present application, where, as shown in fig. 15, the apparatus may be applied to a network device, for example, a gNB, and includes a receiving module 1501, where:

a receiving module 1501, configured to receive a transport block TB and a DMRS sent by a user equipment UE in a physical uplink shared channel PUSCH of a plurality of slots; the UE determines the time-frequency resource carrying the transport block TB and the DMRS according to the following steps:

Optionally, the time unit is greater than or equal to one slot.

It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments 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 integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or 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.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-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.

It should be noted that, the above device provided in the embodiment of the present application can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where a computer program is stored in the processor readable storage medium, where the computer program is configured to cause the processor to execute the DMRS sending method provided in the foregoing embodiments, where the method includes:

In another aspect, an embodiment of the present application further provides a processor readable storage medium, where a computer program is stored, where the computer program is configured to cause the processor to execute the DMRS receiving method provided in the foregoing embodiments, where the method includes:

The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A method for transmitting a demodulation reference signal DMRS, applied to a user equipment UE, comprising:

2. The DMRS transmission method of claim 1, wherein the partitioning rule of the resource whole further includes: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource.

3. The DMRS transmission method of claim 1, wherein the partitioning rule of the resource whole further includes: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource.

4. The method for transmitting the DMRS according to any one of claims 1 to 3, wherein the determining the time-frequency resource for carrying the DMRS in each of the resource integers includes:

determining time-frequency resources carrying the DMRS in each resource whole based on the index of the first symbol of the DMRS in the resource whole, the interval between the DMRSs and the symbol number of the DMRS; or alternatively

5. The method for transmitting DMRS according to claim 4, wherein determining the time-frequency resource for carrying DMRS in each resource block based on the index of the first symbol of DMRS in the resource block, the interval between DMRS, and the DMRS symbol number specifically includes:

6. The method for transmitting the DMRS of claim 4, wherein the determining the time-frequency resource for carrying the DMRS in each of the resource integers includes:

7. The DMRS transmission method according to claim 1, wherein the determining the time-frequency resource of the bearer transport block TB and dividing the time-frequency resource into at least one resource whole specifically includes:

8. The DMRS transmission method according to claim 3 or 7, wherein the time unit is greater than or equal to one slot.

9. The DMRS transmission method according to claim 2, 3 or 7, wherein the time-domain continuous resources include:

continuous and uninterrupted time domain resources; or alternatively

10. A method for receiving a demodulation reference signal DMRS, applied to a network device, comprising:

11. The DMRS receiving method of claim 10, wherein the partitioning rule of the resource whole further includes: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource.

12. The DMRS receiving method of claim 10, wherein the partitioning rule of the resource whole further includes: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource.

13. The method for receiving the DMRS of claim 10, wherein the determining the time-frequency resource for carrying the DMRS in each of the resource integers includes:

14. The method for receiving the DMRS of claim 10, wherein determining the time-frequency resource of the bearer transport block TB and dividing the time-frequency resource into at least one resource entity specifically includes:

15. The method for receiving DMRS according to claim 12 or 14, wherein the time unit is greater than or equal to one slot.

16. A user equipment comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

17. The user equipment of claim 16, wherein the partitioning rule for the resource as a whole further comprises: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource.

18. The user equipment of claim 16, wherein the partitioning rule for the resource as a whole further comprises: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource.

19. The ue of any one of claims 16 to 18, wherein determining the time-frequency resources for carrying the DMRS in each of the resource integers comprises:

20. The ue of claim 19, wherein the determining the time-frequency resource for carrying the DMRS in each of the resource entities based on the index of the first symbol of the DMRS in the one resource entity, the interval between the DMRS, and the DMRS symbol number, comprises:

21. The ue of claim 19, wherein the determining the time-frequency resources for carrying the DMRS in each of the resource integers comprises:

22. The ue of claim 16, wherein the determining the time-frequency resource of the bearer transport block TB and dividing the time-frequency resource into at least one resource whole specifically comprises:

23. The user equipment according to claim 18 or 22, wherein the time unit is greater than or equal to one slot.

24. The user equipment according to claim 17 or 18 or 22, wherein the time-domain contiguous resources comprise:

continuous and uninterrupted time domain resources; or alternatively

25. A network device comprising a memory, a transceiver, and a processor:

26. The network device of claim 25, wherein the partitioning rule for the resource as a whole further comprises: the resources which are the same in frequency domain and are continuous in time domain are taken as a whole resource.

27. The network device of claim 25, wherein the partitioning rule for the resource as a whole further comprises: in each time unit, the same frequency domain resource and the resources continuous in the time domain are taken as a whole resource.

28. The network device of claim 25, wherein the determining the time-frequency resources in each of the resource ensembles that carry the DMRS comprises:

29. The network device of claim 25, wherein the determining the time-frequency resource of the bearer transport block TB and dividing the time-frequency resource into at least one resource whole specifically comprises:

Determining a time domain resource of a multi-time slot PUSCH and a to-be-selected set of time frequency resources for bearing the DMRS; the time domain resource of the multi-time slot PUSCH and the to-be-selected set of the time frequency resource carrying the DMRS are the same as the time domain resource determined by the repetition type B and the PUSCH mapping type B based on the PUSCH repeated transmission and the result of the time frequency resource carrying the DMRS;

30. The network device according to claim 27 or 29, wherein the time unit is greater than or equal to one slot.

31. A transmission apparatus for a demodulation reference signal DMRS, applied to a user equipment UE, comprising:

the first determining module is used for determining time-frequency resources of the bearing transmission block TB and dividing the time-frequency resources into at least one resource whole; the overall resource partitioning rule at least comprises the following steps: taking the resources with the same frequency domain resources as a whole resource;

a second determining module, configured to determine a time-frequency resource carrying the DMRS in each of the resource integers;

and the sending module is used for sending the TB and the DMRS in a Physical Uplink Shared Channel (PUSCH) of a plurality of slots slot based on the time-frequency resource of the bearing Transmission Block (TB) and the time-frequency resource of the bearing DMRS.

32. A receiving apparatus of a demodulation reference signal DMRS, applied to a network device, comprising:

a receiving module, configured to receive a transport block TB and a DMRS sent by a user equipment UE in a physical uplink shared channel PUSCH of a plurality of slots; the UE determines the time-frequency resource carrying the transport block TB and the DMRS according to the following steps:

33. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 9 or to perform the method of any one of claims 10 to 15.