CN114765505A

CN114765505A - Method and device for sending and receiving demodulation reference signal (DMRS)

Info

Publication number: CN114765505A
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: 2022-07-19
Anticipated expiration: 2041-01-15
Also published as: CN114765505B

Abstract

The embodiment of the application provides a sending method, a receiving method and a device for a demodulation reference signal DMRS. Determining time-frequency resources bearing a Transport Block (TB), and dividing the time-frequency resources into at least one resource whole; the dividing rule of the whole resource at least comprises the following steps: taking the resources with the same frequency domain resources as a resource whole; determining time-frequency resources carrying DMRS in the whole resource; and based on the time frequency resource bearing the transport block TB and the time frequency resource bearing the DMRS, transmitting the TB and the DMRS in a Physical Uplink Shared Channel (PUSCH) of a plurality of slot slots. The embodiment of the application can carry out joint channel estimation and unified decoding and demodulation by jointly considering the resources in the multi-slot PUSCH, reduces unnecessary DMRS transmission, increases the resources which can be used for transmitting data, reduces the code rate, and thereby improves the coverage performance.

Description

Method and device for sending and receiving demodulation reference signal (DMRS)

Technical Field

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

Background

In a 5G NR (New Radio) system, with the increase in deployment frequency of a wireless system, propagation loss of a wireless signal is increased, which results in a reduction in transmission distance of the signal and a decrease in coverage performance of a network. In particular, for uplink transmission, that is, transmission transmitted 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 channel because the transmission power of the UE is lower.

A Physical Uplink Shared Channel (PUSCH) is an important Uplink transport Channel in the NR. Generally, the gNB may schedule the UE to transmit the PUSCH through Downlink Control Information (DCI), or configure a semi-static Resource through Radio Resource Control (RRC) signaling to allow the UE to autonomously transmit the PUSCH. The PUSCH carries data information such as a Transport Block (TB), and is transmitted by the UE to the gNB. When the UE transmits the PUSCH, a Demodulation Reference Signal (DMRS) is also transmitted, and the gNB may perform channel estimation and data Demodulation based on the DMRS transmitted by the UE.

The PUSCH in the existing NR is transmitted in only one slot (slot). Even if the PUSCH is repeatedly transmitted, DMRS and complete channel coding need to be included in each repetition, which ensures that each repetition can be normally demodulated and decoded in theory, and each repetition can be regarded as an independent PUSCH in one slot. NR is currently going to support one TB for transmission in "multi-slot PUSCH", but there is currently no solution for NR for how DMRS is transmitted in "multi-slot PUSCH".

Disclosure of Invention

Aiming at the problems in the prior art, the embodiments of the present application provide a sending method, a receiving method, and a device for a demodulation reference signal DMRS.

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

determining time-frequency resources bearing Transport Blocks (TB), and dividing the time-frequency resources into at least one resource whole; the resource overall division rule at least comprises: taking the resources with the same frequency domain resources as a resource whole;

determining time-frequency resources carrying DMRS in the whole resource;

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

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

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

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

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

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

aiming at the condition that the DMRS is a single-symbol DMRS, a symbol n + m x k 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 the resource whole, m is a symbol interval between every two DMRSs, k is a DMRS symbol number, and n, m and k are all non-negative integers; or

Aiming at the condition that the DMRS is a dual-symbol DMRS, symbols (n, n +1) + m x k in each resource whole are used as time domain symbols where the DMRS symbols are located, wherein n is the index of the first symbol of the DMRS in one resource whole, m is the symbol interval between the DMRSs, k is the DMRS symbol number, and n, m and k are all non-negative integers.

Optionally, the determining time-frequency resources carrying DMRS in each resource entirety includes:

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

Optionally, the determining a time-frequency resource carrying a transport block TB and dividing the time-frequency resource into at least one resource entity specifically includes:

determining a time domain resource of a multi-slot PUSCH and a to-be-selected set of a time frequency resource carrying a DMRS, wherein the time domain resource of the multi-slot PUSCH and the to-be-selected set of the time frequency resource carrying the DMRS have the same result as the time domain resource determined based on a repeated type B of PUSCH repeated transmission and a PUSCH mapping type B and the time frequency resource carrying the DMRS;

determining the time-frequency resource carrying the DMRS in the whole resource, which specifically comprises the following steps:

determining time-frequency resources carrying the DMRS in the to-be-selected set based on a screening rule; wherein the screening rule comprises any one of:

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

rule two: in the same frequency domain resource, only reserving DMRS on the first available symbol in each continuous time domain resource section in the time domain;

rule three: reserving a DMRS satisfying any one of the following conditions in the same frequency domain resource: condition 1, the DMRS being a DMRS of a first available symbol in one time element; condition 2, the DMRS is a DMRS in a first available symbol in each time-domain resource segment that is consecutive in the time domain.

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

Optionally, the time-domain contiguous resources include:

a continuous and uninterrupted time domain resource; or

And time domain resources which are continuous and have intervals not exceeding a threshold value N, wherein N is a preset value or is determined based on the PUSCH subcarrier intervals.

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

receiving a transmission block TB and a DMRS (demodulation reference signal) sent by User Equipment (UE) in a Physical Uplink Shared Channel (PUSCH) of a plurality of slot slots; the UE determines the time-frequency resource for bearing the transmission block TB and the DMRS according to the following steps:

determining time-frequency resources bearing Transport Blocks (TB), and dividing the time-frequency resources into at least one resource whole; the dividing rule of the whole resource at least comprises the following steps: taking the resources with the same frequency domain resources as a whole resource;

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

Optionally, the determining time-frequency resources for bearing a transport block TB and dividing the time-frequency resources into at least one resource entity specifically includes:

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

rule one is as follows: only the DMRS on the first available symbol in each time unit is reserved in the same frequency domain resource;

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, 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 transmission method for DMRS as described above in the first aspect.

In a fourth aspect, an embodiment of the present application further provides a network device, including 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 implementing the steps of the method of receiving the DMRS as described above in the second aspect.

In a fourth aspect, embodiments of the present application further provide a processor-readable storage medium, which stores a computer program for causing the processor to execute the steps of the method for transmitting a DMRS as described in the first aspect or the method for receiving a DMRS as described in the second aspect.

The sending method, the receiving method and the device for the demodulation reference signal DMRS can perform joint channel estimation and unified decoding and demodulation by jointly considering the resources in the multi-slot PUSCH, reduce unnecessary DMRS transmission, increase the resources available for data transmission, reduce the code rate and further improve the coverage performance.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

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

fig. 2 is a schematic diagram illustrating transmission of the same TB in a multi-slot PUSCH 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 flowchart illustrating 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 illustrating 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 fourth 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 sixth schematic view 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 illustrating a DMRS receiving method 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 structural diagram of a network device according to an embodiment of the present application;

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

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

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

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

For PUSCH mapping Type a, the starting position of the PUSCH in one 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 an index of 2 or 3 in one slot (a symbol with 14 symbols in one slot, the index of the symbol is 0,1,2 … 13, and a symbol with an index of 2 or 3 corresponds to the 3 rd or 4 th symbol in one slot).

For the PUSCH mapping Type B, the starting position of the PUSCH in one slot is a PUSCH resource actually dynamically scheduled/semi-statically configured by the DCI for the gNB through the RRC, and the first symbol of the DMRS is always the first symbol of the PUSCH.

In addition, if the gNB configures the UE with an extra-transmitted DMRS, in one slot, the UE will additionally transmit a DMRS in addition to the first DMRS, and the symbol position of the extra-transmitted DMRS is determined according to predefined rules, the length ld (number of symbols) of the PUSCH, and other information.

In addition, in the existing NR, repeated transmission of PUSCH is also supported. The repetition type (repetition type) is also classified into two types: one is Type A and one is 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 positions are also the same; the Repetition type A can be combined with the PUSCH mapping type A and can also be combined with the PUSCH mapping type B.

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

Fig. 1 is a schematic diagram of combination of different repetition transmission types and PUSCH mapping types provided in an embodiment of the present application, and as shown in fig. 1, for an example of repetition type B + PUSCH mapping type B, a nominal repetition PUSCH1 is divided into two actual repetitions because it crosses a slot boundary, and finally the actual repetition PUSCH is transmitted 4 times; for each actual repetition, the DMRS is transmitted in its first bit.

It should be noted that, in the embodiment of the present application, one TB is transmitted in a multi-slot PUSCH, and fig. 2 is a schematic diagram of the same TB transmitted in the multi-slot PUSCH provided in the embodiment of the present application, which is a different transmission manner from "repeated transmission" and is only similar to the repeated transmission in terms of resource utilization.

Currently NR will support one TB to be transmitted in the "multislot PUSCH". One TB is transmitted in a multi-slot PUSCH, so that the code length can be increased while the narrow-band transmission is carried out and the higher transmission power spectral density is ensured, and the code gain is obtained, thereby improving the coverage performance. But there is currently no scheme for how DMRS is transmitted in "multislot PUSCH", NR as shown in fig. 2.

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

The method and the device provided by the embodiments of the application are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

Fig. 3 is a schematic view 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, including a network device and a terminal device. Of course, the embodiments 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 to apply for a wireless network connection service; the gNB receives a random access request from at least one UE and performs wireless service for the random access request. Data interaction and transmission are carried out between the gNB and the UE1 and the UE2 through wireless communication.

The technical scheme provided by the embodiment of the application can be suitable for various systems, especially 5G systems. For example, the applicable system may be a global system for mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (long term evolution, LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an LTE-a (long term evolution) system, a universal mobile system (universal mobile telecommunications system, UMTS), a Worldwide Interoperability for Mobile Access (WiMAX) system, a New Radio network (NR 5) system, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5GS), and the like.

A terminal device (e.g., UE) referred to in embodiments of the present application may refer to a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device connected to a wireless modem, etc. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN). Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, and Personal Digital Assistants (PDAs). The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a 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 by other names, depending on the particular application. The network device may be configured to exchange received air frames with 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 Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gbb) in a 5G network architecture (next evolution System), may be a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico Base Station), and the like, which are not limited in the embodiments of the present application. In some network architectures, a 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 schematic flow diagram of a method for transmitting a DMRS according to an embodiment of the present application, where as shown in fig. 4, the method may be applied to a user equipment UE, and the method at least includes the following steps:

step 400, determining time-frequency resources carrying transport blocks TB, and dividing the time-frequency resources into at least one resource whole; the resource overall division rule at least comprises: taking the resources with the same frequency domain resources as a resource whole;

the existing NR is to support one TB transmitted in a "multislot PUSCH". One TB is transmitted in a multi-slot PUSCH, so that the code length can be increased while the transmission power spectral density is ensured and the code gain is obtained, thereby improving the coverage performance. Various embodiments of the present application provide solutions for how DMRS is transmitted in a "multislot PUSCH".

Specifically, a network device such as the gNB may configure, for example, through RRC signaling, that the UE may perform "multiple slot PUSCH transmission for one TB". The gNB schedules the UE to transmit the PUSCH of multiple slots by transmitting the DCI to the UE.

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

After the UE determines the time-frequency resource carrying one TB, according to the method provided in the embodiment of the present application, the time-frequency resource for carrying the TB may be divided, and specifically, may be divided into one or more resource entities. The partitioning rule of the whole resource may include at least: the resources with the same frequency domain resources are taken as a whole.

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

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

And 402, based on the time-frequency resource bearing the transmission block TB and the time-frequency resource bearing the DMRS, transmitting the TB and the DMRS in a Physical Uplink Shared Channel (PUSCH) of a plurality of slot slots.

After the time-frequency resource for bearing the TB and the time-frequency resource for bearing the DMRS are both determined, the UE may send the TB and the corresponding DMRS in the PUSCH of multiple slots based on the determined time-frequency resource for bearing the transport block TB and the determined time-frequency resource for bearing the DMRS, and accordingly, the gNB receives the PUSCH of multiple slots sent by the UE.

According to the method for transmitting the DMRS, the time-frequency resources bearing the transmission block TB are used as a resource whole division rule according to the same frequency-domain resources, at least one resource whole is divided, the time-frequency resources of all the resource whole used for bearing the DMRS are determined, the TB is transmitted in a multi-slot PUSCH, and meanwhile, the method for transmitting the DMRS is provided.

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

Further, the predefined rule/pattern may include any one of the following manners:

the first method is as follows: 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 among the DMRS and the DMRS symbol number.

Fig. 5 is a schematic diagram of a method for determining a DMRS resource in a multi-slot PUSCH according to an embodiment of the present application, and as shown in fig. 5, when considering that PUSCH does not perform frequency hopping transmission, frequency domain resources of PUSCHs in all slots are the same, so that the reference of dividing the whole is only required to be based on "whether a time domain is continuous".

As shown in fig. 5, it is assumed that the multi-slot PUSCH spans 2 slots altogether, and in the 2 nd slot, due to the existence of a symbol (invaid part in the figure) that is not available for uplink transmission, the time domain is no longer continuous, so that the PUSCH is divided into two resource integers, namely resource integer 1 and resource integer 2; in each resource entirety, a time domain resource (symbol) where the DMRS is located is determined by a specific pattern.

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

aiming at the condition that the DMRS is the DMRS with single symbol, the symbol n + m x k in each resource whole is used as the time domain symbol where the DMRS symbol is located, wherein n is the index of the first symbol of the DMRS in one resource whole, m is the symbol interval between every two DMRSs, k is the DMRS symbol number, and n, m and k are all non-negative integers.

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

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

aiming at the condition that the DMRS is a dual-symbol DMRS, a symbol (n, n +1) + m x k 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, n +1 is an index of a second symbol in one resource whole, the dual-symbol DMRS occupies the first two symbols in one resource whole, m is a symbol interval between the DMRSs, k is a DMRS symbol number, and n, m and k are all non-negative integers.

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

The specific pattern may be predefined, or may be sent by the network device in the system information by broadcast, or the network device configures the UE by using specific higher layer signaling (e.g. RRC signaling), or indicates when dynamically scheduling PUSCH by using 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, and as shown in fig. 6, only PUSCH resources satisfying "same frequency domain resources" and "continuous in time domain" simultaneously are taken as a whole resource in consideration of PUSCH frequency hopping transmission. An example is given in fig. 6. Assuming that the multi-slot PUSCH spans 4 slots in total, due to frequency hopping transmission, the first 2 slots belong to the same hop and have the same frequency domain resource, and the second 2 slots belong to another hop and have frequency domain resource different from that of the previous hop, and in the 3 rd slot, there is a symbol (Invalid part in the figure, i.e. Invalid part) that is not available for uplink transmission, so that the time domain is not continuous any more. Therefore, the resource is divided into 3 resource integers, namely a resource integer 1, a resource integer 2 and a resource integer 3; in each resource entirety, a time domain resource (symbol) where the DMRS is located is determined by a specific pattern.

The second method comprises the following steps: and determining the time-frequency resource carrying the DMRS in the whole resource 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 the NR protocol TS 38.211. It should be noted that only DMRS symbol positions in one slot are defined in the table, and if the number of symbols in the whole resource exceeds the number of symbols in one slot, time domain cycling may be performed according to the pattern defined in the table, so as to extend to time domain resources in more than one slot.

In the embodiment of the application, time-frequency resources with continuous time domain and the same frequency-domain resources in multi-slot PUSCH transmission are regarded as a resource whole, and a DMRS time-domain pattern is designed on the basis, so that the inaccuracy of channel estimation caused by signal phase jump caused by time-domain discontinuity can be prevented, 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 encoding performance is improved, and the coverage performance is further improved.

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

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

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

Fig. 8 is a fourth schematic diagram of a method for determining DMRS resources in a multi-slot PUSCH according to an embodiment of the present application, and as shown in fig. 8, an example without frequency hopping is given, where it is assumed that a length of a first time unit is 1 slot, and a time-domain specific time-domain pattern of a DMRS is a pattern of PUSCH mapping type B and DMRS-additional position 1 in Table 6.4.1.1.3-3 in TS 38.211.

In particular, the length of the first time unit may be predefined, such as predefined as one time slot or four time slots; or the network device may transmit the system information through broadcasting, or may configure the system information through UE-specific higher layer signaling (such as RRC signaling), or may indicate the system information through DCI when dynamically scheduling PUSCH transmission.

For the case of frequency hopping, similar to the case of frequency hopping in the embodiment provided in fig. 6, only the resources in a time unit, which have the same frequency domain resources and are continuous in time domain resources, are considered as a whole resource, and the rest of the description is consistent with the above embodiment.

In the embodiment of the application, when multi-slot PUSCH is transmitted, time-frequency resources with continuous time domains and the same frequency-domain resources are regarded as a whole resource in each time unit, and a DMRS time domain pattern is designed on the basis, so that not only can inaccurate channel estimation caused by signal phase jump caused by time domain discontinuity be prevented, but also the DMRS in each time unit can be ensured, and the DMRS transmission resources are saved on the basis of ensuring the channel estimation performance and the decoding performance of each time unit for data transmission, thereby improving the coding performance and further improving the coverage performance.

On the basis of the above embodiments, the determination and transmission of DMRS resources in a multi-slot PUSCH are achieved by taking all resources with the same frequency domain resources as a resource whole and applying a predefined rule/pattern to determine the time domain resources of DMRS in the whole. 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 multiple time-domain resource segments) occurs, there is a possibility that no DMRS exists in part of the resource segments, which affects the channel estimation performance. In this case, it may be additionally specified in the above predefined rule/pattern that, if there is a time domain resource segment which is continuous in the time domain and does not include any DMRS in the whole resource, the DMRS is carried at a predefined symbol position in the time domain resource segment, specifically, at least one DMRS-carrying symbol is included in all continuous time domain resource segments, for example, the first symbol of the time domain resource segment is used for carrying the DMRS.

in this embodiment, on the one hand, an existing method may be multiplexed, and a time domain resource of a multi-slot PUSCH and a candidate set of a time frequency resource carrying a DMRS may be determined based on a manner of a repetition type B + a PUSCH mapping type B for PUSCH repetition transmission. The time domain resource of the multi-slot PUSCH and the candidate set of the time frequency resource carrying the DMRS can also be determined based on other methods, and the determined candidate set is the same as the result determined by adopting the prior art.

determining time-frequency resources carrying the DMRS in the set to be selected based on a screening rule; wherein the screening rule comprises any one of:

and a second rule: in the same frequency domain resource, only reserving DMRS on the first available symbol in each continuous time domain resource section in the time domain;

rule three: in the same frequency domain resource, a DMRS satisfying any one of the following conditions is reserved: condition 1, the DMRS being a DMRS of a first available symbol in one time element; and 2, the DMRS is the DMRS in the first available symbol in each time domain continuous time domain resource section.

One time unit is greater than or equal to one slot, and may be, for example, one slot group (including multiple slots), one slot, one subframe, one system frame, and the like.

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

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 DMRSs in the "preliminary DMRS set" may be reserved according to the above-mentioned screening rule, and DMRSs that do not meet the condition may be discarded, so as to serve as the DMRSs that finally needs to be transmitted. Other methods can also be applied to determine the time domain resources of the multi-slot PUSCH and the 'preliminary DMRS set', and the determined result is the same as that determined by the existing method. Fig. 9 is a fifth schematic view 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. 9, a "time unit" is assumed to be 1 slot, and a DMRS symbol is a single-symbol DMRS. In the absence of frequency hopping, part (a) in fig. 9 is an illustration of reserving a DMRS in the first available symbol in each time unit, (b) is an illustration of reserving a DMRS in the first available symbol in each "continuous time domain resource", and (c) is an illustration of reserving a DMRS that satisfies any one of the following conditions: 1. the DMRS is a DMRS of a first available symbol in a time unit; 2. the DMRS is an indication of the DMRS in the first available symbol in "each segment of contiguous time domain resources".

Fig. 10 is a sixth schematic view 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. 10, a "time unit" is assumed to be 1 slot, and a DMRS symbol is a dual-symbol DMRS. In the absence of frequency hopping, part (a) in fig. 10 is an illustration of reserving a DMRS in the first available symbol in each time unit, (b) part is an illustration of reserving a DMRS in the first available symbol in each "contiguous time domain resource", and (c) part is an illustration of reserving a DMRS that satisfies any one of the following conditions: 1. the DMRS is a DMRS of a first available symbol in one time element; 2. the DMRS is an indication of the DMRS in the first available symbol in "each segment of contiguous time domain resources".

In addition to the methods in fig. 9 and fig. 10, since there are other DMRS patterns under the PUSCH mapping type B, the embodiments of the present application may also be adapted and applied in a similar manner, which is not limited.

In particular, this embodiment also provides a time domain resource indication method for a multi-slot PUSCH, which determines a time domain resource set for transmission similar to the method in the existing repetition type B. However, different from the existing repetition type B, in the embodiment of the present application, one TB is transmitted through a multi-slot PUSCH, and one TB is mapped to all repeated time-frequency resources determined according to a method similar to the resource determination of the repetition type B, instead of each repetition carrying a TB that can be independently decoded as in the existing repetition type B, so 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 resources in a time unit, which have the same frequency domain resources and are continuous in time domain resources, are considered as a whole, and the rest of the description is consistent with the above-mentioned embodiment.

Further, in the above embodiment, the time-domain continuous resources include:

a continuous and uninterrupted time domain resource; or

Specifically, "time-domain continuation" in the embodiment of the present application generally refers to symbol-level continuation, and only two symbols that are immediately adjacent in the time domain are regarded as consecutive symbols. The reason why the time-domain continuous resources are required to be taken as a whole is that once the time-domain resources are discontinuous, the UE may cause that the phases between the signals of the front and rear parts are not continuous any more due to factors such as the turning-off of the radio frequency end device, and at this time, the two parts cannot use the same DMRS for channel estimation. However, the condition of "close proximity" may also be relaxed appropriately in some cases to the case of non-close proximity, for example, if the UE can guarantee that the PUSCH transmitted in two parts separated by N symbols in the time domain can still maintain the continuity of the signal phase, two parts separated by no more than N symbols in the time interval can be considered to be continuous, for example, N ═ 2 symbols, or N is changed with the subcarrier spacing of the PUSCH of 15kHz ^ 2 u (u ^ 0,1,2,3, … …), for example, N ═ 2^ u.

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

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

the UE determines the time-frequency resource for bearing the transmission block TB and the DMRS according to the following steps:

Specifically, a network device such as the gNB may configure, for example, through RRC signaling that the UE may perform "multiple slot PUSCH transmission of one TB". The gNB schedules the UE to transmit the PUSCH of multiple slots by transmitting the DCI to the UE.

After determining the time-frequency resource carrying one TB and dividing the whole resource, the UE can also continue to determine the time-frequency resource carrying the DMRS in each resource whole.

According to the method for sending the DMRS, the time-frequency resources bearing the transmission block TB are used as the division rule of a resource whole according to the same frequency-domain resources to divide at least one resource whole, and after the time-frequency resources of each resource whole used for bearing the DMRS are determined, the method for sending the DMRS is provided while one TB is transmitted in a multi-slot PUSCH, joint channel estimation, unified decoding and demodulation can be carried out by jointly considering the resources in the multi-slot PUSCH, unnecessary DMRS transmission is reduced, the resources which can be used for transmitting data are increased, the code rate is reduced, and therefore the coverage performance is improved.

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

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

On the basis of the above embodiments, the determination and transmission of DMRS resources in a multi-slot PUSCH are achieved by taking all resources with the same frequency domain resources as a resource whole and applying a predefined rule/pattern to determine the time domain resources of DMRS in the whole. 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 multiple time-domain resource segments) occurs, there is a possibility that no DMRS exists in part of the resource segments, which affects the channel estimation performance. In this case, it may be specified in the above predefined rule/pattern that, if there is a time domain resource segment which is continuous in the time domain and does not include any DMRS in the whole resource, the DMRS is carried at a predefined symbol position in the time domain resource segment, specifically, at least one DMRS-carrying symbol is included in all the continuous time domain resource segments, for example, the first symbol of the time domain resource segment is used for carrying the DMRS.

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

On the basis of the foregoing embodiments, the determining a time-frequency resource carrying a transport block TB and dividing the time-frequency resource into at least one resource entity specifically includes:

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

Determining the time-frequency resource carrying the DMRS in each resource entirety, specifically comprising:

The length of the time unit may be predefined, or may be sent by the network device in system information via broadcast, or may be configured via UE-specific higher layer signaling (e.g., RRC signaling), or may be indicated via 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 DMRSs in the "preliminary DMRS set" may be reserved according to the above-mentioned screening rule, and DMRSs that do not meet the condition may be discarded, so as to serve as the DMRSs that finally needs to be transmitted. Other methods can also be applied to determine the time domain resources of the multi-slot PUSCH and the 'preliminary DMRS set', and the determined result is the same as the result determined by the existing method.

For the UE to divide the time-frequency resource carrying the transport block TB and determine the description of the time-frequency resource carrying the DMRS in the whole resource, reference may be made to the above-mentioned UE-side embodiment, which is not described herein again.

Fig. 12 is a schematic structural diagram of a user equipment according to an embodiment of the present application, and as shown in fig. 12, the user equipment UE1200 includes a memory 1202, a transceiver 1203, and a processor 1201; the processor 1201 and the memory 1202 may be physically separated from each other.

A memory 1202 for storing a computer program; a transceiver 1203 for transceiving 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.

Among other things, in FIG. 12, the bus system 1204 may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 1201, and various circuits, represented by the memory 1202, being linked together. The bus system 1204 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1203 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The user interface 1205 may also be an interface to externally interface with a 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 a bus architecture and general processing, and the memory 1202 may store data used by the processor 1201 in performing operations.

Optionally, the processor 1201 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

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

determining time-frequency resources for bearing a Transport Block (TB), and dividing the time-frequency resources into at least one resource whole; the resource overall division rule at least comprises: taking the resources with the same frequency domain resources as a whole resource;

determining time-frequency resources carrying DMRS in the whole resource;

Optionally, the index of the first symbol of the RS in a resource entirety, the interval between DMRSs, and the DMRS symbol number determine a time-frequency resource carrying the DMRSs in each resource entirety; or

aiming at the condition that the DMRS is a single-symbol DMRS, a symbol n + m x k in each resource whole is used as a time domain symbol where the DMRS symbol is located, wherein n is the index of a first symbol of the DMRS in the resource whole, m is a symbol interval between every two DMRSs, k is the number of the DMRS symbols, and n, m and k are all non-negative integers; or

rule three: reserving a DMRS satisfying any one of the following conditions in the same frequency domain resource: condition 1, the DMRS being a DMRS of a first available symbol in one time element; and 2, the DMRS is the DMRS in the first available symbol in each time domain continuous time domain resource section.

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

Optionally, the time-domain continuous resources include:

a continuous and uninterrupted time domain resource; or

The user equipment provided by the embodiment of the application can perform joint channel estimation and unified decoding and demodulation by jointly considering the resources in the multi-slot PUSCH, so that unnecessary DMRS transmission is reduced, the resources which can be used for transmitting data are increased, the code rate is reduced, and the coverage performance is improved.

Fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application, and as shown in fig. 13, the network device 1300 includes a memory 1302, a transceiver 1303, a processor 1301: the processor 1301 and the memory 1302 may be physically separated from each other.

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

In particular, the bus system 1304 may include any number of interconnected buses and bridges, with various circuits linking together one or more processors represented by the processor 1301 and memory represented by the memory 1302, among others, in FIG. 13. The bus system 1304 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, 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 including a transmitter and a receiver, and provides a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, optical cables, and the like. 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.

The processor 1301 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may have a multi-core architecture.

The processor 1301 invokes the computer program stored in the memory 1302 to execute any of the methods provided by the embodiments of the present application according to the obtained executable instructions, for example:

determining time-frequency resources bearing Transport Blocks (TB), and dividing the time-frequency resources into at least one resource whole; the resource overall division rule at least comprises: taking the resources with the same frequency domain resources as a whole resource;

rule three: reserving a DMRS satisfying any one of the following conditions in the same frequency domain resource: condition 1, the DMRS being a DMRS of a first available symbol in one time unit; and 2, the DMRS is the DMRS in the first available symbol in each time domain continuous time domain resource section.

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

The network device provided by the embodiment of the application can perform joint channel estimation and unified decoding and demodulation by jointly considering the resources in the multi-slot PUSCH, so that unnecessary DMRS transmission is reduced, the resources available for data transmission are increased, the code rate is reduced, and the coverage performance is improved.

It should be noted that, the user equipment and the network device provided in the embodiments of the present invention can implement all the method steps implemented by the foregoing method embodiments, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those of the method embodiments in this embodiment are not repeated herein.

Fig. 14 is a schematic structural diagram of a transmitting apparatus for DMRS provided in this embodiment of the present application, and as shown in fig. 14, the apparatus may be applied to a user equipment 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 carrying a transport block TB, and divide the time-frequency resource into at least one resource whole; the resource overall division rule at least comprises: taking the resources with the same frequency domain resources as a resource whole;

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

a sending module 1403, configured to send the TB and the DMRS in a physical uplink shared channel PUSCH of multiple slots based on the time-frequency resource carrying the transport block TB and the time-frequency resource carrying the DMRS.

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

a first rule: only the DMRS on the first available symbol in each time unit is reserved in the same frequency domain resource;

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

Optionally, the time-domain contiguous resources include:

a continuous and uninterrupted time domain resource; or

And time domain resources which are continuous and have intervals not exceeding a threshold value N, wherein N is a preset value or is determined based on the interval of the sub-carriers of the PUSCH.

Fig. 15 is a schematic structural diagram of a receiving apparatus for DMRS provided in this embodiment, as shown in fig. 15, the apparatus may be applied to a network device, such as 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 multiple slot slots; the UE determines the time-frequency resource for bearing the transmission block TB and the DMRS according to the following steps:

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

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 unit is schematic, and is only one logic function division, and when the actual implementation is realized, another division manner may be provided. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) 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: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment, and can achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are not repeated herein.

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the method for transmitting the DMRS provided in each of the above embodiments, and the method includes:

determining time-frequency resources carrying DMRS in the whole resource;

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to cause the processor to execute the DMRS receiving method provided in each of the above embodiments, and the processor-readable storage medium includes:

receiving a transmission block TB and a DMRS which are sent by user equipment UE in a physical uplink shared channel PUSCH of a plurality of slot slots; the UE determines the time-frequency resource for bearing the transmission block TB and the DMRS according to the following steps:

The processor-readable storage medium may be any available media or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, 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, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for sending a demodulation reference signal (DMRS) is applied to User Equipment (UE), and is characterized by comprising the following steps:

determining time-frequency resources for bearing a Transport Block (TB), and dividing the time-frequency resources into at least one resource whole; the dividing rule of the whole resource at least comprises the following steps: taking the resources with the same frequency domain resources as a resource whole;

determining time-frequency resources carrying DMRS in the whole resource;

2. The method for transmitting a DMRS according to claim 1, wherein the rule for dividing the entire resource further comprises: the resources which have the same frequency domain resources and are continuous in the time domain are taken as a whole resource.

3. The method for transmitting the DMRS according to claim 1, wherein the rule for dividing the entire resource further comprises: in each time unit, the resources which are the same in frequency domain and continuous in time domain are taken as a whole resource.

4. The method for transmitting a DMRS according to any one of claims 1 to 3, wherein the determining of the time-frequency resources carrying the DMRS in the entirety of each of the resources comprises:

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

5. The method for transmitting the DMRS as claimed in claim 4, wherein the determining, based on the index of the first symbol of the DMRS in the whole resource, the interval between the DMRSs, and the DMRS symbol numbers, the time-frequency resource carrying the DMRS in the whole resource specifically comprises:

6. The method for transmitting the DMRS according to claim 4, wherein the determining time-frequency resources carrying the DMRS in the whole resource comprises:

7. The method for transmitting a DMRS as claimed in claim 1, wherein the determining time-frequency resources carrying transport blocks, TBs, and dividing the time-frequency resources into at least one whole resource specifically comprises:

rule three: reserving a DMRS satisfying any one of the following conditions in the same frequency domain resource: condition 1, the DMRS being a DMRS of a first available symbol in one time unit; condition 2, the DMRS is a DMRS in a first available symbol in each time-domain resource segment that is consecutive in the time domain.

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

9. The method of the DMRS as claimed in claim 2, claim 3 or claim 7, wherein the time-domain contiguous resources comprise:

a continuous and uninterrupted time domain resource; or

10. A method for receiving a demodulation reference signal (DMRS) is applied to network equipment and is characterized by comprising the following steps:

11. The DMRS receiving method according to claim 10, wherein said rule for dividing the entire resource further includes: the resources which have the same frequency domain resources and are continuous in the time domain are taken as a whole resource.

12. The DMRS receiving method according to claim 10, wherein said rule for dividing the entire resource further includes: in each time unit, the resources which are the same in frequency domain and continuous in time domain are taken as a whole resource.

13. The method for receiving the DMRS as claimed in claim 10, wherein said determining time-frequency resources carrying the DMRS in the entirety of each of said resources comprises:

14. The method for receiving a DMRS according to claim 10, wherein the determining time-frequency resources carrying transport blocks, TBs, and dividing the time-frequency resources into at least one whole resource comprises:

15. The method of receiving a DMRS according to claim 12 or 14, wherein said time element 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 the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining time-frequency resources bearing Transport Blocks (TB), and dividing the time-frequency resources into at least one resource whole; the dividing rule of the whole resource at least comprises the following steps: taking the resources with the same frequency domain resources as a resource whole;

determining time-frequency resources carrying DMRS in the whole resource;

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

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

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

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

20. The ue of claim 19, wherein the determining, based on an index of a first symbol of DMRS in a resource ensemble, an interval between DMRSs, and DMRS symbol numbers, a time-frequency resource carrying DMRS in each resource ensemble comprises:

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

22. The ue of claim 16, wherein the determining time-frequency resources carrying transport blocks TB and dividing the time-frequency resources into at least one resource entity comprises:

23. The user equipment according to claim 18 or 22, characterized in that the time unit is larger than or equal to one slot.

24. The user equipment as claimed in claim 17 or 18 or 22, wherein the time domain contiguous resources comprise:

a continuous and uninterrupted time domain resource; or

25. A network device 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:

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

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

28. The network device of claim 25, wherein the determining time-frequency resources for carrying DMRS in each of the entire resources comprises:

29. The network device of claim 25, wherein the determining time-frequency resources carrying transport blocks, TBs, and dividing the time-frequency resources into at least one resource entity specifically comprises:

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

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

31. A transmitting device of a demodulation reference signal (DMRS) is applied to User Equipment (UE), and is characterized by comprising the following components:

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

a second determining module, configured to determine a time-frequency resource carrying a DMRS in an entire resource;

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

32. A receiving device for a demodulation reference signal (DMRS) is applied to network equipment, and is characterized by comprising:

the receiving module is used for receiving a transmission block TB and a DMRS which are sent by user equipment UE in a physical uplink shared channel PUSCH of a plurality of slot slots; the UE determines the time-frequency resource for bearing the transmission 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 a 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.