WO2022151500A1

WO2022151500A1 - Communication method and apparatus

Info

Publication number: WO2022151500A1
Application number: PCT/CN2021/072566
Authority: WO
Inventors: 余健; 余雅威; 郭志恒
Original assignee: 华为技术有限公司
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-07-21
Also published as: CN116548043A

Abstract

The present application relates to the technical field of communications. Disclosed are a communication method and apparatus. In the method, a terminal device obtains first information, wherein the first information is used for indicating a resource mapping type on a first frequency domain resource, the first frequency domain resource being included in one physical resource block (PRB), when the frequency domain resource type is a first type, determining a target resource, and sending or receiving data by using the resource, wherein the target resource is a resource that is discontinuous on the first frequency domain resource. By using the method, a DMRS frequency domain resource position can be better matched, protocol compatibility is ensured, and better channel estimation performance can be obtained. In addition, the resource mapping type on the first frequency domain resource is distinguished, and different resource mapping modes on the first frequency domain resource may be provided for the terminal device, so that frequency domain resource mapping is more flexible.

Description

A communication method and device

technical field

The present application relates to the field of communication technologies, and in particular, to a communication method and apparatus.

Background technique

In a wireless communication system, sending information from a network device to a terminal device is generally called downlink (DL) communication, and sending information from a terminal device to a network device is called (Uplink, UL) communication. Before communicating, the terminal device or the network device needs to determine the time and frequency mapping resources, and then send information on the determined mapping resources.

Due to the effects of carrier frequency offset, timing offset, and frequency-selective fading of the channel, the signal can be corrupted, resulting in phase offset and amplitude changes, which in turn affect information reception. In order to demodulate the received information correctly, in the prior art, a demodulation reference signal (DMRS) can be transmitted together with the corresponding information, and mapped to the same frequency domain resources, and then channel estimation based on the DMRS can be achieved. Demodulate the received information.

However, in the prior art, the resource mapping method is not flexible enough, and further research is needed.

SUMMARY OF THE INVENTION

The present application provides a communication method and device, which can flexibly implement channel resource mapping.

In a first aspect, an embodiment of the present application provides a communication method, which is applied to a terminal device or can also be applied to a chip inside the terminal device. In this method, the terminal device obtains first information, where the first information is used to indicate the resource mapping type on the first frequency domain resource, and the first frequency domain resource is included in a physical resource block PRB, when the frequency domain resource type When it is the first type, the target resource is determined, and the resource is used to send or receive data, where the target resource is a discontinuous resource on the first frequency domain resource.

The above method can better match the DMRS frequency domain resource location, not only can maintain backward compatibility with traditional terminal equipment, but also provide compatibility with existing protocols, and can also obtain better channel estimation performance.

In a possible design, determining the target resource includes: determining the target resource according to the second information and the third information;

Wherein, the second information includes first frequency domain resource indication information; the third information includes at least one of the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and the frequency domain interval, and the frequency domain interval represents The interval between two adjacent subcarriers.

In a possible design, the method further includes: determining a first parameter according to the scaling factor; and determining the number of bits included in the data according to the first parameter.

In a possible design, the scaling factor includes a frequency-domain scaling factor β and/or a time-domain scaling factor S; the first parameter N _info satisfies one of the following formulas:

N _info = β × N _RE × R × Q _m × ν, or

N _info = S × N _RE × R × Q _m × ν, or

N _info = β×S×N _RE ×R×Q _m ×ν

Among them, R is the code rate, Q _m is the modulation mode, v is the number of layers or streams to be transmitted, and N _RE is the number of resource units used for data transmission in a time slot.

In this way, the terminal device can determine the first parameter according to the frequency domain scaling factor and/or the time domain scaling factor, so as to ensure that the calculated first parameter is more accurate, thereby better matching the scaling of time-frequency resources.

In one possible design, the method also includes:

Determine the time domain resource corresponding to the first frequency domain resource, the time domain resource includes M time slots, and M is a positive integer;

When M is greater than or equal to 2, the target resource corresponding to each of the M time slots is determined.

In a possible design, the target resource corresponding to each of the M time slots is determined, including:

Determine the target resource corresponding to each of the M time slots according to the target resource and the subcarrier offset value corresponding to the first time slot of the M time slots; or

According to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots, the The interval between two adjacent subcarriers in the target resource corresponding to the first time slot and the subcarrier offset value determine the target resource corresponding to each time slot of the M time slots.

In this way, the terminal device can determine the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots, thereby saving configuration signaling overhead.

In a possible design, the first subcarrier position information RE _start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

or

Among them, RE _start represents the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset represents the subcarrier offset value, mod represents the modulo operation,

Represents rounded down, i represents the slot index in 1 radio frame or represents the slot index in M time slots;

The number of subcarriers included in the target resource corresponding to each time slot in the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

The interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between adjacent two subcarriers in the target resource corresponding to the first time slot in the M time slots.

In this way, the terminal device can determine the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots. The number of subcarriers included in the target resource and the interval between two adjacent subcarriers in the target resource are the same, thereby saving configuration signaling overhead.

In a possible design, data is carried on the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH.

In a possible design, the sequence length M _ZC of the demodulation reference signal DMRS corresponding to the data is 2 or 3 or 4 or 6.

In one possible design, the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Among them, the first parameter

is determined according to the DMRS sequence length M _ZC and the group index u.

In one possible design, obtaining the first information includes:

The first information is obtained from itself or received from a network device.

In one possible design, the method also includes:

When the resource mapping type is the second type, a target resource on the first frequency domain resource is determined, and the target resource is a continuous resource on the first frequency domain resource.

By using this method, the resource mapping types on the first frequency domain resources are distinguished, and different resource mapping types on the first frequency domain resources can be provided for the terminal device, so that the frequency domain resource mapping is more flexible.

In a possible design, the second information is carried in radio resource control signaling or media access control signaling or downlink control signaling; the third information is carried in radio resource control signaling or medium access control signaling or downlink control signaling control signaling.

In a second aspect, an embodiment of the present application provides a communication method, which is applied to a network device or can also be applied to a chip inside the network device. In this method, the network device sends first information, where the first information is used to indicate the resource mapping type on the first frequency domain resource, and the first frequency domain resource is included in a physical resource block PRB; when the resource mapping type is In the case of the first type, a target resource is determined, and data is received or sent according to the target resource, wherein the target resource is a discontinuous resource on the first frequency domain resource;

In a possible design, determining the target resource includes: determining the target resource according to the second information and the third information; wherein the second information includes first frequency domain resource indication information; the third information includes the first in the target resource At least one of the position information of the subcarriers, the number of subcarriers included in the target resource, and the frequency domain interval, where the frequency domain interval represents the interval between two adjacent subcarriers.

In a possible design, the method further includes: determining a first parameter according to the scaling factor; and then determining the number of bits included in the data according to the first parameter.

N _info = β × N _RE × R × Q _m × ν, or

N _info = S × N _RE × R × Q _m × ν, or

N _info = β×S×N _RE ×R×Q _m ×ν

In this way, the terminal device can determine the first parameter according to the frequency-domain scaling factor and/or the time-domain scaling factor, so as to better match the scaling of time-frequency resources and ensure that the calculated first parameter is more accurate.

In a possible design, the method further includes: determining a time domain resource corresponding to the first frequency domain resource, the time domain resource includes M time slots, and M is a positive integer; when M is greater than or equal to 2, determining M time slots The target resource corresponding to each time slot of the slot.

In this way, it is clarified that the terminal device can determine the process of the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots.

or

In this way, it is clarified that the terminal device can determine the specific process of the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots. The target resource corresponding to a time slot includes the same number of subcarriers and the interval between two adjacent subcarriers in the target resource, thereby saving configuration signaling overhead.

Among them, the first parameter

In one possible design, the method also includes:

In a third aspect, a communication apparatus is provided, including various modules or units for performing any of the above aspects or the methods in any of the possible implementations of the aspect.

In a fourth aspect, a communication apparatus is provided, including a processor. The processor is coupled to a memory and operable to execute instructions in the memory to cause the apparatus to perform any of the above aspects or a method of any of the possible implementations of this aspect. Optionally, the apparatus further includes a memory. Optionally, the apparatus further includes an interface circuit, and the processor is coupled to the interface circuit.

In a fifth aspect, a processor is provided, including: an input circuit, an output circuit, and a processing circuit. The processing circuit is configured to receive signals through the input circuit and transmit signals through the output circuit, so that the processor performs any of the above aspects or the method in any of the possible implementations of this aspect.

In a specific implementation process, the above-mentioned processor may be a chip, the input circuit may be an input pin, the output circuit may be an output pin, and the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits. The input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver, the signal output by the output circuit may be, for example, but not limited to, output to and transmitted by a transmitter, and the input circuit and output The circuit can be the same circuit that acts as an input circuit and an output circuit at different times. The embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.

In a sixth aspect, a communication device is provided, including a processor and a memory. The processor is used to read the instructions stored in the memory, and can receive signals through the receiver and transmit signals through the transmitter, so as to execute the method in any of the above aspects or any of the possible implementations of this aspect.

Optionally, the processor is one or more, and the memory is one or more.

Alternatively, the memory may be integrated with the processor, or the memory may be provided separately from the processor.

In the specific implementation process, the memory can be a non-transitory memory, such as a read only memory (ROM), which can be integrated with the processor on the same chip, or can be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the setting manner of the memory and the processor.

The processing device in the sixth aspect may be a chip, and the processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software When implemented, the processor can be a general-purpose processor, which is realized by reading software codes stored in a memory, and the memory can be integrated in the processor or located outside the processor and exist independently.

In a seventh aspect, a computer program product is provided, the computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes a computer to perform any one of the above-mentioned aspects or any of the aspects in this aspect. method in any of the possible implementations.

In an eighth aspect, a computer-readable medium is provided, the computer-readable medium stores a computer program (also referred to as code, or instruction), when it runs on a computer, causing the computer to perform any one of the above-mentioned aspects or this aspect method in any of the possible implementations.

Description of drawings

FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applicable;

FIG. 2 is a schematic diagram of another network architecture to which the embodiments of the present application are applicable;

FIG. 3 is a schematic diagram of another network architecture to which the embodiment of the present application is applicable;

4 is a schematic diagram of a method for resource mapping;

5 is a schematic diagram of another method for resource mapping;

6 is a schematic flowchart of a resource mapping method provided by an embodiment of the present application;

6a is a schematic diagram of a resource mapping method provided by an embodiment of the present application;

6b is a schematic diagram of yet another resource mapping method provided by an embodiment of the present application;

FIG. 6c is a schematic diagram of yet another resource mapping method provided by an embodiment of the present application;

FIG. 6d is a schematic diagram of yet another resource mapping method provided by an embodiment of the present application;

FIG. 7 is a schematic flowchart of another resource mapping method provided by an embodiment of the present application;

8 is a schematic diagram of a resource mapping method provided by an embodiment of the present application;

9 is a schematic diagram of yet another resource mapping method provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of yet another resource mapping method provided by an embodiment of the present application;

FIG. 11 is a schematic diagram of a communication device provided by an embodiment of the present application;

FIG. 12 is a schematic structural diagram of a terminal device 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;

Detailed ways

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

First, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) Terminal device: It can be a wireless terminal device that can receive scheduling and instruction information of network devices. The wireless terminal device can be a device that provides voice and/or data connectivity to users, or a handheld device with wireless connection function, or Other processing equipment connected to the wireless modem. Terminal equipment can communicate with one or more core networks or the Internet via a radio access network (RAN), and the terminal equipment can be a mobile terminal equipment, such as a mobile phone (or "cellular" phone, mobile phone (mobile phone), computer and data cards, for example, may be portable, pocket-sized, hand-held, computer built-in or vehicle mounted mobile devices that exchange language and/or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), tablets Computer (Pad), computer with wireless transceiver function and other equipment. Wireless terminal equipment may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station (MS), a remote station, an access point ( access point (AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), subscriber station (SS), user terminal equipment (customer premises equipment, CPE), terminal (terminal), user equipment (user equipment, UE), mobile terminal (mobile terminal, MT), etc. The terminal device may also be a wearable device and a next-generation communication system, for example, a terminal device in a 5G communication system or a terminal device in a future evolved public land mobile network (PLMN).

(2) Network device: It can be a device in a wireless network. For example, a network device can be a radio access network (RAN) node (or device) that connects a terminal device to a wireless network, also known as a base station. . At present, some examples of RAN equipment are: generation Node B (gNodeB), transmission reception point (TRP), evolved Node B (evolved Node B, eNB), wireless network in the 5G communication system Controller (radio network controller, RNC), Node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, Or home Node B, HNB), base band unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wi-Fi) access point (access point, AP), etc. In addition, in a network structure, the network device may include a centralized unit (centralized unit, CU) node, or a distributed unit (distributed unit, DU) node, or a RAN device including a CU node and a DU node.

(3) In the embodiment of the present application, the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU), and memory (also called main memory). The operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application. For example, the execution subject of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute a program.

Additionally, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used in this application encompasses a computer program accessible from any computer readable device, carrier or medium. For example, computer readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) etc.), smart cards and flash memory devices (eg, erasable programmable read-only memory (EPROM), card, stick or key drives, etc.). Additionally, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.

(4) The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A, B can be singular or plural. The character "/" generally indicates that the associated objects are an "or" relationship. "At least one item(s) below" or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s). For example "at least one of A, B and C" includes A, B, C, AB, AC, BC or ABC.

And, unless otherwise specified, ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or importance of multiple objects degree. For example, the first threshold and the second threshold are only for distinguishing different thresholds, and do not indicate the difference in priority or importance of the two thresholds.

The technical solutions of the present application will be further described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a communication system to which an embodiment of the present application is applied. As shown in FIG. 1 , the terminal device 130 can be connected to a wireless network to obtain services of an external network (eg, the Internet) through the wireless network, or communicate with other devices through the wireless network, for example, can communicate with other terminal devices. The wireless network includes a radio access network (RAN) device 110 and a core network (core network, CN) device 120, wherein the RAN device 110 is used to access the terminal device 130 to the wireless network, and the CN device 120 is used to connect the terminal device 130 to the wireless network. Manage terminal devices and provide gateways for communication with external networks. It should be understood that the number of each device in the communication system shown in FIG. 1 is only for illustration, and the embodiments of the present application are not limited to this. In practical applications, the communication system may also include more terminal devices 130 and more RAN devices. 110, other devices may also be included.

FIG. 2 is a schematic diagram of another network architecture to which this embodiment of the present application is applied. As shown in Figure 2, the network architecture includes CN equipment, RAN equipment and terminal equipment. The RAN equipment includes a baseband device and a radio frequency device, where the baseband device can be implemented by one node or multiple nodes, and the radio frequency device can be implemented independently from the baseband device, or can be integrated in the baseband device, or some functions Independent integration, some functions are integrated in the baseband device. For example, in an LTE communication system, a RAN equipment (eNB) includes a baseband device and a radio frequency device, wherein the radio frequency device may be arranged remotely relative to the baseband device, for example, a remote radio unit (remote radio unit, RRU) is arranged relative to the BBU remote wireless unit.

The communication between the RAN device and the terminal device follows a certain protocol layer structure. For example, the control plane protocol layer structure may include a radio resource control (RRC) layer, a packet data convergence protocol (packet data convergence protocol, PDCP) layer. , radio link control (radio link control, RLC) layer, media access control (media access control, MAC) layer and physical layer and other protocol layer functions; user plane protocol layer structure can include PDCP layer, RLC layer, MAC layer The functions of protocol layers such as physical layer and physical layer; in a possible implementation, a service data adaptation protocol (SDAP) layer may also be included above the PDCP layer.

A RAN device may implement the functions of protocol layers such as RRC, PDCP, RLC, and MAC by one node, or may implement the functions of these protocol layers by multiple nodes. For example, in an evolved structure, a RAN device may include a CU) and a DU, and multiple DUs may be centrally controlled by one CU. As shown in Figure 2, the CU and DU can be divided according to the protocol layers of the wireless network. For example, the functions of the PDCP layer and above are set in the CU, and the functions of the protocol layers below PDCP, such as the RLC layer and the MAC layer, are set in the DU.

The division of this protocol layer is only an example, and it can also be divided at other protocol layers, for example, at the RLC layer, the functions of the RLC layer and the above protocol layers are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU; Alternatively, in a certain protocol layer, for example, some functions of the RLC layer and functions of the protocol layers above the RLC layer are placed in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are placed in the DU. In addition, it can also be divided in other ways, for example, by time delay, the functions whose processing time needs to meet the delay requirements are set in the DU, and the functions that do not need to meet the delay requirements are set in the CU.

In addition, the radio frequency device may be integrated independently, not placed in the DU, may also be integrated in the DU, or partially remote and partially integrated in the DU, which is not limited herein.

FIG. 3 is a schematic diagram of another network architecture to which this embodiment of the present application is applied. Compared with the network architecture shown in Figure 2, in Figure 3, the control plane (CP) and user plane (UP) of the CU can also be separated and divided into different entities for implementation, namely the control plane (CP) CU entity ( That is, the CU-CP entity) and the user plane (user plane, UP) CU entity (that is, the CU-UP entity).

In the above network architecture, the signaling generated by the CU can be sent to the terminal device through the DU, or the signaling generated by the terminal device can be sent to the CU through the DU. The DU may not parse the signaling, but directly encapsulate it through the protocol layer and transparently transmit it to the terminal device or CU. In the following embodiments, if the transmission of such signaling between the DU and the terminal device is involved, at this time, the sending or receiving of the signaling by the DU includes this scenario. For example, the signaling of the RRC or PDCP layer is finally processed as the signaling of the PHY layer and sent to the terminal device, or is converted from the received signaling of the PHY layer. Under this architecture, the signaling of the RRC or PDCP layer can also be considered to be sent by the DU, or sent by the DU and radio frequency loading.

The network architecture shown in FIG. 1 , FIG. 2 or FIG. 3 can be applied to communication systems of various radio access technologies (RATs), such as an LTE communication system, or a 5G (or referred to as 5G) communication system. The new wireless (new radio, NR) communication system can also be a transition system between the LTE communication system and the 5G communication system. The transition system can also be called a 4.5G communication system, and of course it can also be a future communication system. The network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. The evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The apparatuses in the following embodiments of the present application may be located in terminal equipment or network equipment according to the functions implemented by them. When the above CU-DU structure is adopted, the network device may be a CU node, or a DU node, or a RAN device including a CU node and a DU node.

The related technical features involved in the embodiments of the present application are introduced below. It should be noted that these explanations are for the purpose of making the embodiments of the present application easier to understand, and should not be regarded as limitations on the protection scope claimed by the present application.

1. Demodulation reference signal (DMRS)

In order to correctly demodulate the data carried on the physical channel, DMRS can be used for channel estimation. Since it is not necessary to estimate the channel quality outside the frequency band occupied by the physical channel, the DMRS is usually transmitted together with the corresponding physical channel (uplink physical channel or downlink physical channel) and occupies the same bandwidth.

Specifically, the DMRS configuration information may include the following information:

(1) DMRS type: used to indicate the density of DMRS symbols in the frequency domain, the type can be Type1 or Type2, this parameter can be combined with the number of DMRS symbols to determine the number of supported antenna ports;

(2) DMRS time domain position: used to indicate the position of the DMRS symbol in the time domain. The time domain position of the DMRS can be determined according to the front-loaded DMRS symbol configuration (Front-loaded DMRS Symbol) and the additional DMRS symbol (Additional DMRS Symbol) configuration . For example, Front-loaded DMRS can be configured on the 1st, 2nd or 3rd and 4th symbols. In addition, extra DMRS symbols are usually used for channel estimation and demodulation in high-speed mobile scenarios;

(3) Number of symbols: used to indicate a single symbol (Single Symbol) or a double symbol Double Symbol.

In addition, there is a concept of Code-Domain Multiplexing (CDM) group in 5G. CDM means that two or more antenna ports use the same time-frequency resources but different orthogonal codes to transmit DMRS. A CDM group It includes multiple antenna ports that use the same time-frequency resource for transmission; the number of CDM groups and the number of antenna ports included in each CDM group can be determined according to the DMRS type and the number of symbols, as shown in Table 1 and Table 2:

Table 1. CDM group information corresponding to DMRS type and number of single symbols

Table 2. CDM group information corresponding to DMRS type and double symbol number

2. Antenna port: referred to as port. The transmit antenna recognized by the receiving end device, or the transmit antenna that can be distinguished in space. One antenna port may be configured for each virtual antenna, each virtual antenna may be a weighted combination of multiple physical antennas, and each antenna port may correspond to one reference signal port.

3. Resource mapping

Resource mapping refers to allocating bits or modulation symbols to be transmitted to corresponding time and frequency resources for transmission.

According to the description of the technical features above, it can be known that the DMRS is usually transmitted together with the corresponding physical channel (uplink physical channel or downlink physical channel), and covers the same frequency band. The resource mapping is introduced below by taking the DMRS existing in the Physical Uplink Shared Channel (PUSCH) as an example.

In a possible implementation manner, the network device configures the DMRS parameters as follows: the DMRS type is Type1, the number of symbols is a single symbol, no additional DMRS symbols, the number of CDM groups is 2, and the corresponding DMRS symbol is located in the first Symbol. In coverage-limited scenarios, discrete Fourier Transform-Spread OFDM (DFT-S-OFDM) waveforms are usually used, and only single-stream transmission is supported in the uplink. At this time, DMRS transmission can only be performed in CDM group 0 or transmission in CDM group 1. Therefore, as shown in Figure 4, when the network device schedules 6 subcarriers in the frequency domain and 1 time slot in the time domain, each time slot includes 14 OFDM symbols, if the frequency domain resources still use continuous resource mapping, the PUSCH Data can be mapped to frequency domain positions with subcarrier indices 0 to 5, while DMRS symbols can only be mapped to CDM group 0 (frequency domain positions of

subcarrier indices

0, 2, and 4) or to CDM group 1 ( In the frequency domain positions with

subcarrier indices

1, 3, and 5), since only 3 subcarriers can be used to transmit DMRS at this time, the density of DMRS is reduced, thereby affecting the performance of channel estimation.

In another possible implementation manner, the network device configures the DMRS parameters as: the DMRS type is Type1, the number of symbols is single symbol, no additional DMRS symbols, the number of CDM groups is 2, and the corresponding DMRS symbol is located in the first Symbol. In coverage-limited scenarios, discrete Fourier Transform-Spread OFDM (DFT-S-OFDM) waveforms are usually used, and only single-stream transmission is supported in the uplink. At this time, DMRS transmission can only be performed in CDM group 0 or transmission in CDM group 1. Therefore, as shown in Figure 5, when the network device schedules 6 subcarriers in the frequency domain and 1 time slot in the time domain, each time slot includes 14 OFDM symbols, if the frequency domain resources still use continuous resource mapping, the PUSCH Data can be mapped to frequency domain positions with subcarrier indices 6 to 11, while DMRS symbols can only be mapped to CDM group 0 (frequency domain positions of

subcarrier indices

6, 8, and 10) or to CDM group 1 ( In the frequency domain positions with

subcarrier indices

7, 9, and 11), since only 3 subcarriers can be used to transmit DMRS at this time, the density of DMRS is reduced, thereby affecting the performance of channel estimation.

Based on this, the embodiments of the present application provide a resource mapping method and apparatus, so as to solve the problem that inflexible resource mapping affects channel estimation performance. Exemplarily, the resource mapping method provided in this embodiment of the present application may include two possible solutions, which are referred to as solution one and solution two for ease of description.

In scheme 1, the terminal device acquires the type of resource mapping on the first frequency domain resource, the terminal device determines the target resource from the first frequency domain resource, and maps the data to the target resource according to the type of resource mapping, and then The target resource is used to receive or send the same data; in this way, by distinguishing the frequency domain resource mapping type, the frequency domain resource mapping is made more flexible, so as to better match the existing DMRS frequency domain resource location and obtain better channel estimation performance.

In scheme 2, the terminal device obtains the subcarrier offset value, and then when the terminal device determines to transmit or receive the same data through multiple time slots, it can obtain the subcarrier offset value according to the target resources and subcarriers in the first time slot of the multiple time slots. Offset value, determine the target resource on each time slot of multiple time slots, and map data to the target resource according to the type of resource mapping, and then send or receive the same data through multiple time slots on the determined target resource In this way, on the one hand, by distinguishing the types of frequency domain resource mapping, the frequency domain resource mapping can be made more flexible, and better channel estimation performance can be obtained; on the other hand, by introducing subcarrier offset values, it is beneficial to enhance the interference randomization performance , thereby reducing the probability of continuous strong interference between neighboring cells.

Hereinafter, the method provided by the present application will be described. It should be understood that in the method embodiments described below, only the network device and the terminal device are used as the execution subjects as an example. The network device can also be replaced by a chip configured in the network device, and the terminal device can also be replaced by a chip configured in the terminal device. chip.

FIG. 6 is a schematic flowchart corresponding to a resource mapping method provided by an embodiment of the present application, as shown in FIG. 6 , including:

S601. A terminal device acquires first information, where the first information indicates a resource mapping type on a first frequency domain resource.

It can be understood that the terminal device determines the resource mapping type on the first frequency domain resource according to the first information, and the first frequency domain resource is included in a physical resource block PRB; wherein, "resource mapping type" can be replaced with "resource mapping type" Mapping mode", or replaced with "resource mapping information" or other similar concepts, which are not specifically limited.

Exemplarily, the resource mapping type includes one of the first type and the second type. When the resource mapping type is the first type, discontinuous resource mapping is used; when the resource mapping type is the second type, continuous resource mapping is used. resource mapping, otherwise, it will not be repeated here. Specifically, if discontinuous resource mapping is used, the mapped resources are discontinuous in the frequency domain corresponding to one PRB; if continuous resource mapping is used, the mapped resources are in the frequency domain corresponding to one PRB. continuously. The mapped resources are frequency domain resources scheduled by the network device to the terminal device.

In this embodiment of the present application, there may be various manners for the terminal device to obtain the first information, which will be described below with reference to implementation manner a1 and implementation manner a2.

Implementation mode a1: The terminal device obtains from itself. For example, the terminal is obtained by presetting a subscriber identity module (subscriber identity module, SIM) card, or by presetting the first information, etc.; using this method can save communication resources or signaling expenses between the terminal device and the network device .

Implementation mode a2: the terminal device acquires from the network device, that is, the terminal device receives the first information sent from the network device, and this mode can make the acquisition mode of the first information more flexible.

In this implementation manner, the first information may be carried in various possible messages, such as a radio resource control (Radio Resource Control, RRC) message, or downlink control information (Downlink Control Information, DCI) or media access control (media access control) control, MAC) control element (control element, CE) or other possible messages, which are not specifically limited.

Further, there are various specific implementations of the first information indicating the resource mapping type on the first frequency domain resource. As a possible implementation, the first information may include multiple bits, and then different resource mapping types are indicated by different values of the multiple bits. For example, the first information may include 1 bit. When the value of the bit is "0", the indicated resource mapping type is discontinuous mode, and when the bit is set to "1", the indicated resource mapping Type is continuous. The above is only an example, and the specific number of bits used and the resource mapping types corresponding to different values may not be limited in this embodiment of the present application.

As another possible implementation, the first indication information may indicate different resource mapping types through a bitmap, wherein the correspondence between different bits in the bitmap and resource mapping types may be preset. When When the value of a certain bit is "1", it indicates that the resource mapping is performed in the manner corresponding to the bit. For example, the first indication information includes 2 bits, the first bit of the 2 bits corresponds to the resource mapping type being discontinuous, and the second bit of the 2 bits corresponds to the resource mapping type that is continuous. If the value of 2 bits is "10" (that is, the first bit of the 2 bits is "1", and the second bit is "0"), it means that the resource mapping type is discontinuous Way. The above is only an example, and the specific used bitmap and the corresponding relationship between the bitmap and the resource mapping type may not be limited in this embodiment of the present application.

As yet another possible implementation, the first indication information may include multiple fields, and the presence or absence of multiple fields may further indicate different resource mapping types. For example, the first indication information may include one field. If this field exists in the first indication information, it means that the resource mapping type is discontinuous; if this field does not exist, it means that the resource mapping type is continuous, and vice versa. . The above is only an example, and the number of fields used and the resource mapping types corresponding to whether different fields exist or not are not limited in this embodiment of the present application.

S602: The network device sends second information to the terminal device, where the second information includes first frequency domain resource indication information.

Correspondingly, the terminal device receives the second information sent by the network device, and determines the first frequency domain resource according to the second information. The first frequency domain resource indication information indicates the first frequency domain resource, and the specific indication manner may be direct indication or indirect indication. Exemplarily, there are multiple manners for the terminal device to determine the first frequency domain resource according to the second information, which will be described below in conjunction with implementation manner b1 and implementation manner b2.

Implementation manner b1: The terminal device directly determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information. That is, the first frequency-domain resource indication information is in the form of direct indication, for example, the first frequency-domain resource indication information includes an index of the first frequency-domain resource.

For example, the terminal device determines the frequency domain resource corresponding to the first frequency domain resource indication information as the first frequency domain resource. For example, if the frequency domain resource corresponding to the first frequency domain resource indication information is PRB _m (PRB m or the m+1 th PRB), the terminal device determines that the first frequency domain resource is PRB _m .

Implementation manner b2: The terminal device determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information and the auxiliary parameter. That is, the first frequency domain resource indication information is an indirect indication manner, for example, the first frequency domain resource indication information may include an index of the first frequency domain resource.

In this implementation manner, when the terminal device determines the first frequency domain resource, it may first determine the virtual first frequency domain resource according to the first frequency domain resource indication information included in the second information, and then determine the virtual first frequency domain resource according to the virtual first frequency domain resource and the auxiliary parameter. to determine the first frequency domain resource. In a possible implementation manner, the terminal device removes the frequency domain resources corresponding to the auxiliary parameters from the virtual first frequency domain resources, and then determines the first frequency domain resources. It can be understood that the first frequency domain resources here are obtained from the first frequency domain resources. It is obtained by removing the frequency domain resource corresponding to the auxiliary parameter from the frequency domain resource corresponding to the indication information. Wherein, "remove" can be replaced with "deduct", "remove" or "exclude", and the specific name is not limited in the present invention.

Exemplarily, the auxiliary parameter may include muting subcarrier spacing information, where the muting subcarrier spacing information indicates subcarrier information that cannot be used for resources in the first frequency domain. In other words, through the muting subcarrier spacing information, the first frequency The domain resource indicates which subcarriers in the frequency domain resource corresponding to the information cannot be used for the first frequency domain resource. In addition, the muted subcarrier interval information may include index information of muted subcarriers or information on the number of muted subcarriers.

It can be understood that there may be one or more muting subcarrier spacing information. Here, the silent sub-carrier does not carry any information, and the amplitude is 0 after OFDM sampling. In other words, the silent sub-carrier has zero power, which has no energy, which can reduce the difference between adjacent PRBs due to Doppler frequency offset. carrier interference. For example, the terminal device may determine, according to a preset rule or a network device instruction, that the k subcarriers calculated from the upper boundary and/or the lower boundary of the frequency domain resource corresponding to the first frequency domain resource indication information cannot be used for the first frequency domain resource. Domain resources, where k is the number of muted subcarriers included in the muting subcarrier spacing information, the upper boundary of PRB _n represents the count from the lowest subcarrier number (eg subcarrier number 0), and the lower boundary of PRB _n represents the subcarrier number from the highest (eg subcarrier number 11). It can be understood that, in this example, the network device may send indication information to the terminal device for indicating that the muting subcarrier spacing information is applicable to the upper boundary, the lower boundary or the dual boundary (upper boundary and lower boundary).

For example, the frequency domain resource corresponding to the first frequency domain resource indication information is PRB _n (PRB n or the n+1 th PRB), and the muting subcarrier interval information indicates

subcarriers

0, 1, and 2 and

subcarriers

9, 10, and 10. If 11 cannot be used for the first frequency domain resource, the terminal device determines that the first frequency domain resource is

subcarriers

3, 4, 5, 6, 7, and 8. For another example, the frequency domain resource corresponding to the first frequency domain resource indication information is PRB _n , and the _muting subcarrier interval is a value of 2, then the terminal device can determine the upper boundary and /or 2 subcarriers calculated from the lower boundary cannot be used for the first frequency domain resource.

The above is only an example, and the number and position of the subcarriers indicated by the specific muting subcarrier spacing information may not be limited in this embodiment of the present application.

It should be noted that the above-mentioned muted subcarrier spacing information may also be referred to as "empty subcarriers" or "protected subcarriers" or "muted subcarrier information" or "unavailable subcarrier indication information", and the specific names are not limited in the present invention; In addition, "the muted subcarrier spacing information indicates the subcarrier information that cannot be used for the first frequency domain resource" may be replaced with "the muted subcarrier spacing information indicates the subcarrier information that cannot be used for data transmission". It can be understood that by introducing the muting subcarrier spacing information, carrier interference between adjacent PRBs caused by Doppler frequency offset can be reduced, thereby improving system performance.

Further, in the above two implementation manners, the second information and the auxiliary parameters may be sent through the same piece of information, for example, the network device sends the second information and the auxiliary parameters through the same message. Alternatively, the second information and the auxiliary parameter may also be sent through different messages, for example, the network device sends the second information through message 1 and sends the auxiliary parameter through message 2. Among them, message 1 and message 2 can be understood as radio resource control (radio resource control, RRC) message, medium access control control element (medium access control control element, MAC CE), or downlink control information (downlink control information, DCI) ) at least one of them.

S603, the network device sends third information to the terminal device.

Correspondingly, the terminal device receives the third information sent by the network device, where the third information includes a parameter for determining the location of the target resource in the first frequency domain resource.

Here, the third information may include various possible parameters for determining the position of the target resource in the frequency domain resource, which will be described below in conjunction with Example 1 and Example 2.

Example a1: The third information includes at least one of the position information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and the frequency domain interval, where the frequency domain interval represents the distance between two adjacent subcarriers. interval.

It can be understood that (1) the position information of the first subcarrier in the target resource may be an absolute value or a relative value. For example, the third information includes the absolute index value of the first subcarrier, and the terminal device can determine the position of the first subcarrier according to the index lookup table, for example, the relationship between the position of the first subcarrier and the corresponding index value As shown in Table 1; for another example, the third information includes the position information of the first subcarrier relative to the reference subcarrier, and the reference subcarrier may be preset by the protocol or indicated by the network device to the terminal device. (2) The number of subcarriers included in the target resource can be indicated by an index. For example, the terminal device can determine the number of subcarriers included in the target resource by looking up a table according to the index value of the number of subcarriers sent by the network device. , the relationship between the number of subcarriers included in the target resource and the corresponding index value is shown in Table 2 or Table 3, and which table to use may be predefined by the protocol or indicated by the network device. (3) The frequency domain interval can be 0 or one or more values: when the frequency domain interval is 0 value, it can be understood that the network device does not configure the frequency domain interval, and the subcarrier corresponding to the target resource is in the frequency domain. is continuous; when the frequency domain interval is a value, the subcarriers corresponding to the target resource are distributed at equal frequency domain intervals, and the interval between subcarriers corresponding to two adjacent target resources is equal to the frequency domain interval; When the domain interval is multiple values, the subcarriers corresponding to the target resource are distributed at unequal frequency domain intervals; the number of frequency domain intervals indicated by the network is related to the number of subcarriers included in the target resource. For example, the network indicated frequency domain interval The number may be one less than the number of subcarriers included in the target resource.

Table 1

Table 2

索引值index value	目标资源包括的子载波个数The number of subcarriers included in the target resource
0000	11
0101	33
1010	66
1111	1212

table 3

索引值index value	目标资源包括的子载波个数The number of subcarriers included in the target resource
0000	11
0101	44
1010	88
1111	1212

For example a1, when the terminal device determines the target resource, it needs three parameters: the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, and the frequency domain interval, but the three parameters can be obtained in the following way The terminal device obtains it by itself or from a network device. Here, if the terminal device obtains it by itself, it can be obtained by the terminal device through a preset subscriber identity module (SIM) card, or through a protocol preset, etc.; It saves communication resources or signaling overhead between the terminal device and the network device. If the terminal device is obtained from the network device, it may be obtained through the third information. It can be understood that when the third information includes one or two of the three parameters of the first subcarrier location information, the number of subcarriers included in the target resource, and the frequency domain interval, the other parameters of the three parameters can be passed through. The invention does not limit the acquisition by the terminal device itself or in other ways.

For example, if the terminal device directly determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information, the third information includes the location information of the first subcarrier in the target resource and the subcarriers included in the target resource. number, frequency domain interval. As shown in Figure 6a, when the first frequency domain resource indication information indicates one PRB, that is, the first frequency domain resource is 12 subcarriers, the first carrier position information indicates that the first subcarrier position is subcarrier 0, and the target resources include The number of subcarriers is 6, and the frequency domain interval is 2. According to the above method, subcarrier 0, subcarrier 2, subcarrier 4, subcarrier 6, subcarrier 8, subcarrier 10 and subcarrier 12 can be obtained as target resources.

For another example, if the terminal device indirectly determines the first frequency domain resource according to the first frequency domain resource indication information included in the second information and the pre-acquired muting subcarrier interval information, the third information includes the first frequency domain resource among the target resources. Subcarrier location information and the number of subcarriers included in the target resource. As shown in Figure 6b, when the muting subcarrier spacing information indicates that subcarrier 0, subcarrier 1, subcarrier 10, and subcarrier 11 cannot be used for the first frequency domain resources, at this time, the first frequency domain resources are from subcarriers 3 to 11. Subcarrier 8, if the first subcarrier position information indicates that the first subcarrier position is subcarrier 3, and the number of subcarriers included in the target resource is 6, according to the above method, the section from subcarrier 2 to subcarrier 10 can be obtained Consecutive subcarriers are target resources.

Example a2: The third information includes location information of each subcarrier in the target resource in the first frequency domain resource.

Exemplarily, the third information may indicate the position information of each subcarrier position in the target resource in the first frequency domain resource through a bitmap, wherein different bits in the bitmap are related to the subcarrier position in the first frequency domain resource. The corresponding relationship between them may be preset. When the value of a bit is "1", it indicates that the position of the subcarrier corresponding to the bit can be used as the target resource; for example, as shown in Figure 6c, if the first frequency domain resource includes 12 subcarriers, the third information It can include 12 bits, and the 12 bits correspond to the 12 subcarriers of the first frequency domain resource. The 12 subcarriers are numbered respectively from subcarrier 0 to subcarrier 11. If the first bit and the third bit of the 12 bits are The value of the 7th bit and the 11th bit is "1", which means that subcarrier 0, subcarrier 2, subcarrier 6 and subcarrier 10 are the target resources. As another example, as shown in FIG. 6d , through implementation b2 in S602, it is determined that the first frequency domain resources are

subcarriers

3, 4, 5, 6, 7, and 8. In this case, the third information may include 6 subcarriers. Bit, 6 bits correspond to the 6 subcarriers of the first frequency domain resource respectively, if the value of the first bit, the third bit, and the sixth bit in the 6 bits is "1", it means that the corresponding subcarrier The carrier is the target resource, that is, the subcarrier 3, the subcarrier 5, and the subcarrier 8 are the target resource.

Further, in the above two examples, the third information can be carried in a radio resource control (radio resource control, RRC) message, or a medium access control control element (medium access control control element, MAC CE), or downlink control information (downlink control information, DCI).

It should be noted that S603 may be executed before S602, or S602 and S603 may be executed simultaneously, or S601 may be executed after S603, and the order of S601, S602, and S603 is not limited in this embodiment of the present application.

S604, when the resource type is the first type, determine the target resource according to the second information and the third information.

In this step, when the resource type is the first type, a target resource is determined, and the target resource is a discontinuous resource on the first frequency domain resource, and the specific determination method is the same as that in S602 and S603 for the second information and the third The description and examples of the information will not be repeated here.

S605: Determine the number of bits included in the data carried by the target resource.

In this embodiment of the present application, the terminal device may determine the number of bits of the data packet carried by the target resource through the following steps:

Step 1: Calculate the number of resource elements (Resource elements, REs) in each resource block (Physical resource block, PRB) in the scheduled time slot.

in,

Indicates that the number of subcarriers included in a PRB in the frequency domain is 12,

represents the number of OFDM symbols allocated to PUSCH,

The number of REs included in the DMRS code division multiplexing (CDM) group without data transmission,

Overhead configured for higher layer signaling, whose value is 6, 12, or 18. If not configured, then

The value of is 0.

Step 2: Calculate the total number of REs of the scheduling resources allocated to the terminal by the scheduled time slot, that is, the number of REs used for PUSCH transmission.

N _RE =min(156,N' _RE )·n _PRB

Wherein, n _PRB is the number of PRBs allocated to the terminal.

Step 3: Calculate the number of information bits that can be transmitted (or the first parameter)

In a possible implementation manner, the first parameter is determined according to a scaling factor, where the scaling factor includes a frequency-domain scaling factor β and/or a time-domain scaling factor S.

Specifically, the terminal device can determine the first parameter according to one of the following formulas:

N _info = β × N _RE × R × Q _m × ν, or

N _info = S × N _RE × R × Q _m × ν, or

N _info = β×S×N _RE ×R×Q _m ×ν

Wherein, R is the code rate, Q _m is the modulation mode, v is the number of layers or streams to be transmitted, and N _RE is the number of resource units used for the data transmission in a time slot.

Step 4: Calculate the Transport Block Size (TBS) according to the number of information bits (or the first parameter).

For example, for the detailed process of calculating the TBS according to the number of information bits (or the first parameter), reference may be made to the implementation method in the prior art, and the specific implementation of the present invention is not limited.

S606, send or receive data according to the target resource.

In a possible implementation manner, the terminal device sends or receives data according to the target resource, wherein the data is carried on the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH, it can be understood that the target resource is the physical downlink shared channel PDSCH or physical uplink shared channel PDSCH or physical uplink shared channel channel PUSCH.

For example, when preparing the data to be sent, the terminal device can map the data to be sent to the subcarriers corresponding to the target resources according to the resource mapping type known in step S601, and map the data to be sent to the subcarriers corresponding to the target resources, and map the data to the subcarriers corresponding to the first frequency domain resource indication information. Send or receive data on time domain resources. For example, if the first frequency domain resource indication information is carried in the DCI, and the time domain resource corresponding to the first frequency domain resource indication information is time slot 1, the terminal device sends or receives data in time slot 1 according to the target resource.

In addition, the data may also be carried in the physical downlink control channel PDCCH or the physical uplink control channel PUCCH or other physical channels, which is not specifically limited in the present invention.

In yet another possible implementation manner, the terminal device sends or receives the demodulation reference signal DMRS according to the target resource while sending or receiving data according to the target resource.

For example, the demodulation reference signal DMRS sequence length M _ZC corresponding to the data is 2 or 3 or 4 or 6.

Exemplarily, the sequence generation of the demodulation reference signal DMRS satisfies the following formula:

Among them, the first parameter

Illustratively, the first parameter

The corresponding relationship between the DMRS sequence length M _ZC and the group index u may be shown in Table 4 to Table 7. It should be noted that Tables 4 to 7 are only examples, the first parameter

The table size of the corresponding relationship between the DMRS sequence length M _ZC and the group index u, and the size of the numerical value in each table, are not limited in the present invention.

Table 4 When M _ZC = 2,

Corresponding relationship with u

Table 5 When M _ZC = 3,

Corresponding relationship with u (candidate value 1)

Table 6 When M _ZC = 3,

Corresponding relationship with u (candidate value 2)

Table 7 When M _ZC = 4,

Corresponding relationship with u

It should be noted that, as an optional step, in S604, when the resource type is the second type, the terminal device determines a target resource, and the target resource is a continuous resource on the first frequency domain resource.

In this case, the terminal device may also determine the target resource according to the second information and the third information, where the second information is the first frequency domain resource indication information, and the third information includes the location information of the first subcarrier in the target resource, The target resource includes at least one of the number of subcarriers and the frequency domain interval. The descriptions about the second information and the third information are the same as those described in S602 and S603, and are not repeated here. In addition, for a scenario where the resource type is the second type, after the terminal device determines the target resource, it may execute according to S605 and S606, and the specific implementation is the same as above, which will not be repeated here.

Using the above method, the terminal device acquires the type of resource mapping on the first frequency domain resource, the terminal device determines the target resource from the first frequency domain resource, and maps the data to the target resource according to the type of resource mapping, thereby realizing The same data is received or sent using the target resource; in this way, by distinguishing the frequency domain resource mapping types, the frequency domain resource mapping is made more flexible, so as to better match the non-consecutive DMRS frequency domain resource positions and obtain better channel estimation performance. In addition, in this solution, the introduction of silent sub-carriers to determine the first frequency domain resource can effectively reduce the inter-sub-carrier interference between adjacent PRBs due to Doppler frequency offset, which is beneficial to improve system performance.

FIG. 7 is a schematic flowchart corresponding to a resource mapping method provided by an embodiment of the present application, as shown in FIG. 7 , including:

S701, a terminal device acquires a subcarrier offset value.

Exemplarily, there may be one or more subcarrier offset values, and the present application may not limit the specific number.

Exemplarily, there may be multiple ways for the terminal device to obtain the subcarrier offset value.

Implementation mode a1: The terminal device obtains from itself. For example, the terminal can be obtained by presetting a subscriber identity module (subscriber identity module, SIM) card, or by presetting a subcarrier offset value, etc.; using this method can save communication resources or information between the terminal device and the network device. order expenses.

Implementation mode a2: The terminal device acquires the subcarrier offset value from the network device, that is, the terminal device receives the subcarrier offset value sent from the network device. Using this method can make the acquisition method of the subcarrier offset value more flexible.

In this implementation manner, the subcarrier offset value can be carried in various possible messages, such as a radio resource control (Radio Resource Control, RRC) message, or downlink control information (Downlink Control Information, DCI) or medium access control ( media access control, MAC) control element (control element, CE) or other possible messages, which are not specifically limited.

S702: The network device sends second information to the terminal device, where the second information includes first frequency domain resource indication information.

Exemplarily, S702 may refer to S602, which will not be repeated here.

S703: Determine a time domain resource corresponding to the first frequency domain resource, where the time domain resource includes M time slots.

S704, when M is greater than or equal to 2, determine the target resource corresponding to the first time slot in the M time slots.

Exemplarily, for S704 to determine the target resource corresponding to the first time slot of the M time slots, reference may be made to the related methods and descriptions in S601 to 604, which will not be repeated here.

S705: Determine the target resource corresponding to each time slot of the M time slots according to the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value.

Exemplarily, there may be multiple manners for the terminal device to determine the target resource corresponding to each of the M timeslots, which will be introduced separately in the following implementation manner b1 and implementation manner b2.

Implementation b1

The terminal device offsets the entire target resource corresponding to the first time slot of the M time slots according to the predetermined rule according to the subcarrier offset value, and then determines the target resource corresponding to each time slot of the M time slots. In the implementation mode b1, the examples c1, c2, and c3 are combined to illustrate:

In example c1, the first subcarrier position information RE _start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

Wherein, RE _start represents the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE _offset represents the offset value of the subcarrier, and mod represents the modulo operation,

Exemplarily, the number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

Exemplarily, the interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the distance between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval.

For example, as shown in Figure 8, if the same data (or transport block TB) is sent through 4 time slots, that is, M=4, when the subcarrier offset value is 1, according to the above method, it can be known that the nth The time slot and the n+2 time slot are in the same frequency domain position, and the n+1th time slot and the n+3 time slot are offset by a subcarrier relative to the nth time slot.

In example c2, the first subcarrier position information RE _start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

For example, as shown in Figure 9, if the same data (or transport block TB) is sent through 4 time slots, that is, M=4, when the subcarrier offset value is 1, it can be known from the above method that the nth The time slot and the n+1 time slot are in the same frequency domain position, and the n+2th time slot and the n+3 time slot are offset by a subcarrier relative to the nth time slot.

In example c3, when there are multiple subcarrier offset values, and the order of use of the multiple subcarrier offset values is preset or indicated by the network device, correspondingly, the terminal device uses the subcarrier offset value and the multiple subcarrier offset values. The sequence of using the offset values determines the position of the first subcarrier in the target resource corresponding to each of the M time slots.

For example, as shown in Figure 10, if the same data (or transport block TB) is sent through 4 time slots, that is, M=4, the subcarrier offset values are 0, 2, 3, and 1, in this order It acts on the nth time slot, the n+1th time slot, the n+2th time slot, and the n+3th time slot in turn. It can be seen from the figure that the n+1th time slot has 2 subcarriers relative to the nth time slot. Offset, the n+2th time slot is offset by 3 subcarriers relative to the nth time slot, and the n+4th time slot is offset by 1 subcarrier relative to the nth time slot.

It should be noted that the above is only an example, the specific target resource position corresponding to the first time slot, the value of M, the subcarrier offset value, and the order of use of the subcarrier offset value may not be limited in this application.

Implementation b2

According to the subcarrier offset value and the period value, the terminal device offsets the target resource corresponding to the first time slot of the M time slots as a whole according to a predetermined rule, and then determines the target resource corresponding to each time slot of the M time slots. , where the period value is used to indicate the period to which the preset rule applies, and the period value is represented by T; optionally, the period value T may be a positive integer greater than or equal to 2, or the period value may be greater than or equal to 2 and less than or equal to The positive integer of RE _total , the specific value may not be limited in the present invention.

For the acquisition method of the period value, reference may be made to the description of the subcarrier offset value in S701, that is, the terminal device may acquire it from itself or from a network device, which will not be repeated here.

In an example, the first subcarrier position information RE _start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

or

Represents rounded down, i represents the time slot index in one radio frame or represents the time slot index in M time slots, RE _total represents the number of subcarriers included in the first frequency domain resource, T is greater than or a positive integer equal to 2;

Exemplarily, the interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval.

It can be understood that, for RE _total , when the number of subcarriers included in the first frequency domain resource is 12, RE _total is equal to 12, and when considering the muting subcarrier interval information, the number of subcarriers included in the first frequency domain resource is less than 12 , the value of RE _total can be equal to (12-the number of subcarriers included in the muting subcarrier spacing information), for example, when the number of subcarriers included in the muting subcarrier spacing information is 4, the value of RE _total is (12- 4), that is, the RE _total value is 8, correspondingly, the RE _total in the above formula is equal to 8.

S706: Determine the number of bits included in the data carried by the target resource.

S707, send or receive data according to the target resource.

Exemplarily, for S706 to S707, reference may be made to S605 to S606, which will not be repeated here.

Using the above method, the terminal device obtains the subcarrier offset value, and then when the terminal device determines to transmit or receive the same data through multiple time slots, it can obtain the subcarrier offset value according to the target resource on the first time slot of the multiple time slots and the subcarrier offset value. Shift value, determine the target resource on each of the multiple time slots, and map the data to the target resource according to the type of resource mapping, and then send or receive the same data through multiple time slots on the determined target resource; In this way, on the one hand, by distinguishing the types of frequency domain resource mapping, the frequency domain resource mapping can be made more flexible and better channel estimation performance can be obtained; on the other hand, by introducing the subcarrier offset value, it is beneficial to enhance the interference randomization performance, Thus, the probability of continuous strong interference between neighboring cells is reduced.

It can be understood that the above-mentioned multiple embodiments can be combined with each other.

For the above method process, the present application further provides a communication device, the communication device is configured to execute the above method process.

FIG. 11 shows a possible exemplary block diagram of the apparatus involved in the embodiment of the present application. As shown in FIG. 11 , the apparatus 1100 may include: a processing unit 1102 and a communication unit 1103 . The processing unit 1102 is used to control and manage the actions of the device 1100 . The communication unit 1103 is used to support the communication between the apparatus 1100 and other devices. Optionally, the communication unit 1103 is also referred to as a transceiving unit, and may include a receiving unit and/or a sending unit, which are respectively configured to perform receiving and sending operations. Optionally, the apparatus 1100 may further include a storage unit 1101 for storing program codes and/or data of the apparatus 1100 . The hardware element of the communication unit or the transceiver unit may be a receiver or a transceiver, and the hardware element of the processing unit may be a processor.

The apparatus 1100 may be the terminal device in the foregoing embodiments, or may also be a chip set in the terminal device, and the apparatus 1100 may execute the processes corresponding to the terminal device in the foregoing method embodiments. The processing unit 1102 can support the apparatus 1100 to perform the actions of the terminal device in each method example above. Alternatively, the processing unit 1102 mainly performs the internal actions of the terminal device in the method example, and the communication unit 1103 may support the communication between the apparatus 1100 and other devices.

Specifically, in one embodiment, the processing unit 1102 is configured to obtain first information, where the first information is used to indicate a resource mapping type on the first frequency domain resource, where the first frequency domain resource is included in the In a physical resource block PRB;

The processing unit is further configured to, when the resource mapping type is the first type, determine a target resource, where the target resource is a discontinuous resource on the first frequency domain resource;

A transceiver unit, configured to send or receive data according to the target resource.

In a possible design, the processing unit is specifically configured to determine the target resource according to the second information and the third information;

Wherein, the second information includes first frequency domain resource indication information; the third information includes the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, the frequency domain interval At least one, the frequency domain interval represents an interval between two adjacent subcarriers.

In one possible design, the processing unit is also used to,

determining the first parameter according to the scaling factor;

According to the first parameter, the number of bits included in the data is determined.

N _info = β × N _RE × R × Q _m × ν, or

N _info = S × N _RE × R × Q _m × ν, or

N _info = β×S×N _RE ×R×Q _m ×ν

In a possible design, the processing unit is also used for,

determining a time domain resource corresponding to the first frequency domain resource, where the time domain resource includes M time slots, where M is a positive integer;

In a possible design, the processing unit is specifically used for:

According to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, and the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots , the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value, determine the target corresponding to each time slot of the M time slots resource.

or

The number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

The interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval between subcarriers.

In a possible design, the data is carried on the physical downlink shared channel PDSCH or the physical uplink shared channel PUSCH.

In a possible design, the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Among them, the first parameter

is determined according to the DMRS sequence length M _ZC and the group index u

In a possible design, the processing unit is specifically configured to acquire the first information from itself; or

The transceiver unit is specifically configured to receive the first information from the network device.

In a possible design, the processing unit is specifically configured to, when the resource mapping type is the second type, determine a target resource on the first frequency domain resource, where the target resource is on the first frequency domain resource continuous resource.

In a possible design, the second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling;

The third information is carried in radio resource control signaling, medium access control signaling or downlink control signaling.

The apparatus 1100 may be the network device in the foregoing embodiment, or may also be a chip provided in the network device. The apparatus 1100 is configured to execute the process corresponding to the network device in the foregoing method embodiments. The processing unit 1102 may support the apparatus 1100 to perform the actions of the network device in each method example above. Alternatively, the processing unit 1102 mainly performs the internal actions of the network device in the method example, and the communication unit 1103 may support the communication between the apparatus 1100 and other devices.

Specifically, in one embodiment, the processing unit 1102 is configured to: send first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, where the first frequency domain resource is included in a physical In the resource block PRB;

A transceiver unit, configured to receive or send data according to the target resource.

In a possible design, the processing unit is also used for,

determining the first parameter according to the scaling factor;

N _info = β × N _RE × R × Q _m × ν, or

N _info = S × N _RE × R × Q _m × ν, or

N _info = β×S×N _RE ×R×Q _m ×ν

In a possible design, the processing unit is also used for,

In a possible design, the processing unit is specifically used to:

Among them, the first parameter

In a possible design, the processing unit is specifically used to:

For specific implementation details in the apparatus embodiments, reference may be made to the corresponding descriptions of the foregoing manner embodiments.

Since the apparatus provided in the embodiment of the present application can be used to execute the above communication method, reference can be made to the above method embodiment for the technical effect obtained by the apparatus, which will not be repeated here.

It should be understood that the division of units in the above apparatus is only a division of logical functions, and in actual implementation, it may be fully or partially integrated into one physical entity, or may be physically separated. And all the units in the device can be realized in the form of software calling through the processing element; also can all be realized in the form of hardware; some units can also be realized in the form of software calling through the processing element, and some units can be realized in the form of hardware. For example, each unit can be a separately established processing element, or can be integrated in a certain chip of the device to be implemented, and can also be stored in the memory in the form of a program, which can be called by a certain processing element of the device and execute the unit's processing. Function. In addition, all or part of these units can be integrated together, and can also be implemented independently. The processing element described here can also become a processor, which can be an integrated circuit with signal processing capability. In the implementation process, each operation of the above method or each of the above units may be implemented by an integrated logic circuit of hardware in the processor element or implemented in the form of software being invoked by the processing element.

In one example, a unit in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, eg, one or more application specific integrated circuits (ASICs), or, one or more Multiple microprocessors (digital singnal processors, DSPs), or, one or more field programmable gate arrays (FPGAs), or a combination of at least two of these integrated circuit forms. For another example, when a unit in the apparatus can be implemented in the form of a processing element scheduler, the processing element can be a processor, such as a general-purpose central processing unit (CPU), or other processors that can invoke programs. For another example, these units can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above receiving unit is an interface circuit of the device for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the receiving unit is an interface circuit used by the chip to receive signals from other chips or devices. The above sending unit is an interface circuit of the device, used for sending signals to other devices. For example, when the device is implemented in the form of a chip, the sending unit is an interface circuit used by the chip to send signals to other chips or devices.

Please refer to FIG. 12 , which is a schematic structural diagram of a terminal device according to an embodiment of the present application. It may be the terminal device in the above embodiment, and is used to implement the operation of the terminal device in the above embodiment. As shown in FIG. 3 , the terminal device includes: an antenna 1210 , a radio frequency part 1220 , and a signal processing part 1230 . The antenna 1210 is connected to the radio frequency part 1220 . In the downlink direction, the radio frequency part 1220 receives the information sent by the network device through the antenna 1210, and sends the information sent by the network device to the signal processing part 1230 for processing. In the upstream direction, the signal processing part 1230 processes the information of the terminal equipment and sends it to the radio frequency part 1220, and the radio frequency part 1220 processes the information of the terminal equipment and sends it to the network equipment through the antenna 1210.

The signal processing part 1230 may include a modulation and demodulation subsystem, which is used to implement the processing of each communication protocol layer of the data; it may also include a central processing subsystem, which is used to implement the processing of the terminal device operating system and the application layer; in addition, it can also Including other subsystems, such as multimedia subsystem, peripheral subsystem, etc., wherein the multimedia subsystem is used to realize the control of the terminal equipment camera, screen display, etc., and the peripheral subsystem is used to realize the connection with other devices. The modem subsystem can be a separate chip. Optionally, the above apparatus for terminal equipment may be located in the modem subsystem.

The modem subsystem may include one or more processing elements 1231, including, for example, a host CPU and other integrated circuits. In addition, the modulation and demodulation subsystem may further include a storage element 1232 and an interface circuit 1233 . The storage element 1232 is used to store data and programs, but the program used to execute the method performed by the terminal device in the above method may not be stored in the storage element 1232, but in a memory outside the modulation and demodulation subsystem, When used, the modem subsystem is loaded for use. Interface circuit 1233 is used to communicate with other subsystems. The above apparatus for terminal equipment may be located in a modulation and demodulation subsystem, and the modulation and demodulation subsystem may be implemented by a chip, and the chip includes at least one processing element and an interface circuit, wherein the processing element is used to execute any one of the above executions of the terminal equipment. In the various steps of the method, the interface circuit is used to communicate with other devices. In one implementation, the unit for the terminal device to implement each step in the above method may be implemented in the form of a processing element scheduler. For example, an apparatus for a terminal device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to Execute the method executed by the terminal device in the above method embodiments. The storage element may be a storage element in which the processing element is on the same chip, that is, an on-chip storage element.

In another implementation, the program for executing the method performed by the terminal device in the above method may be in a storage element on a different chip from the processing element, that is, an off-chip storage element. At this time, the processing element calls or loads the program from the off-chip storage element to the on-chip storage element, so as to call and execute the method performed by the terminal device in the above method embodiments.

In yet another implementation, the unit for the terminal device to implement each step in the above method may be configured as one or more processing elements, and these processing elements are provided on the modulation and demodulation subsystem, and the processing element here may be an integrated circuit, For example: one or more ASICs, or, one or more DSPs, or, one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form chips.

The units of the terminal device for implementing each step in the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC), and the SOC chip is used to implement the above method. At least one processing element and a storage element may be integrated in the chip, and the method executed by the above terminal device may be implemented in the form of a program stored in the storage element being invoked by the processing element; or, at least one integrated circuit may be integrated in the chip to implement the above terminal The method for device execution; or, in combination with the above implementation manners, the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a terminal device may include at least one processing element and an interface circuit, where the at least one processing element is configured to execute any method performed by the terminal device provided in the above method embodiments. The processing element can execute part or all of the steps performed by the terminal device in the first way: by calling the program stored in the storage element; or in the second way: by combining the instructions with the integrated logic circuit of the hardware in the processor element Part or all of the steps performed by the terminal device may be performed in the manner of the first method; of course, some or all of the steps performed by the terminal device may also be performed in combination with the first manner and the second manner.

The processing elements here are the same as those described above, and may be a general-purpose processor, such as a CPU, or one or more integrated circuits configured to implement the above method, such as: one or more ASICs, or one or more microprocessors DSP, or, one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms.

The storage element may be one memory or a collective term for multiple storage elements.

Please refer to FIG. 13 , which is a schematic structural diagram of a network device according to an embodiment of the present application. It is used to implement the operation of the network device (such as the second network device) in the above embodiments. As shown in FIG. 13 , the network device includes: an antenna 1301 , a radio frequency device 1302 , and a baseband device 1303 . The antenna 1301 is connected to the radio frequency device 1302 . In the uplink direction, the radio frequency device 1302 receives the information sent by the terminal device through the antenna 1301, and sends the information sent by the terminal device to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information of the terminal device and sends it to the radio frequency device 1302 , and the radio frequency device 1302 processes the information of the terminal device and sends it to the terminal device through the antenna 1301 .

Baseband device 1303 may include one or more processing elements 13031, including, for example, a host CPU and other integrated circuits. In addition, the baseband device 1303 may further include a storage element 13032 and an interface 13033, the storage element 13032 is used for storing programs and data; the interface 13033 is used for exchanging information with the radio frequency device 1302, such as a common public radio interface (common public radio interface) , CPRI). The above apparatus for network equipment may be located in the baseband apparatus 1303, for example, the above apparatus for network equipment may be a chip on the baseband apparatus 1303, the chip including at least one processing element and an interface circuit, wherein the processing element is used to execute the above network Each step of any one of the methods performed by the device, the interface circuit is used to communicate with other devices. In one implementation, the unit for the network device to implement each step in the above method may be implemented in the form of a processing element scheduler, for example, an apparatus for a network device includes a processing element and a storage element, and the processing element calls the program stored in the storage element to The method performed by the network device in the above method embodiment is performed. The storage element may be a storage element in which the processing element is located on the same chip, that is, an on-chip storage element, or a storage element that is located on a different chip from the processing element, that is, an off-chip storage element.

In another implementation, the unit of the network device implementing each step in the above method may be configured as one or more processing elements, these processing elements are provided on the baseband device, and the processing elements here may be integrated circuits, for example: a or ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits can be integrated together to form chips.

The units of the network device for implementing each step in the above method may be integrated together and implemented in the form of a system-on-a-chip (SOC), for example, the baseband device includes the SOC chip for implementing the above method. At least one processing element and a storage element may be integrated in the chip, and the method executed by the above network device may be implemented in the form of a program stored in the storage element being invoked by the processing element; or, at least one integrated circuit may be integrated in the chip to implement the above network The method for device execution; or, in combination with the above implementation manners, the functions of some units are implemented in the form of calling programs by processing elements, and the functions of some units are implemented in the form of integrated circuits.

It can be seen that the above apparatus for a network device may include at least one processing element and an interface circuit, where the at least one processing element is configured to execute any method performed by the network device provided in the above method embodiments. The processing element may execute part or all of the steps performed by the network device in the first manner: that is, by calling the program stored in the storage element; or in the second manner: that is, combining the instructions with the integrated logic circuit of the hardware in the processor element part or all of the steps performed by the network device; of course, part or all of the steps performed by the above network device may also be performed in combination with the first and second methods.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), and the like.

Claims

A communication method, characterized in that the method is applicable to terminal equipment, comprising:

acquiring first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, where the first frequency domain resource is included in a physical resource block PRB;

When the resource mapping type is the first type, determining a target resource, where the target resource is a discontinuous resource on the first frequency domain resource;

Data is sent or received according to the target resource.
The method according to claim 1, wherein the determining the target resource comprises:

determining the target resource according to the second information and the third information;

Wherein, the second information includes first frequency domain resource indication information; the third information includes the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, the frequency domain interval At least one, the frequency domain interval represents an interval between two adjacent subcarriers.
The method according to claim 1 or 2, wherein the method further comprises:

determining the first parameter according to the scaling factor;

According to the first parameter, the number of bits included in the data is determined.
The method according to claim 3, wherein the scaling factor comprises a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N info satisfies one of the following formulas:

N info = β × N RE × R × Q m × ν, or

N info = S × N RE × R × Q m × ν, or

N info = β×S×N RE ×R×Q m ×ν

Wherein, R is the code rate, Q m is the modulation mode, v is the number of layers or streams to be transmitted, and N RE is the number of resource units used for the data transmission in a time slot.
The method according to any one of claims 1-4, wherein the method further comprises:

determining a time domain resource corresponding to the first frequency domain resource, where the time domain resource includes M time slots, where M is a positive integer;

When M is greater than or equal to 2, the target resource corresponding to each of the M time slots is determined.
The method according to claim 5, wherein the determining the target resource corresponding to each time slot of the M time slots comprises:

Determine the target resource corresponding to each of the M time slots according to the target resource and the subcarrier offset value corresponding to the first time slot of the M time slots; or

According to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, and the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots , the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value, determine the target corresponding to each time slot of the M time slots resource.
The method of claim 6, comprising:

The first subcarrier position information RE start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

or

Wherein, RE start represents the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE offset represents the offset value of the subcarrier, and mod represents the modulo operation,
Represents rounded down, i represents the slot index in 1 radio frame or represents the slot index in M time slots;

The number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

The interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval between subcarriers.
The method according to any one of claims 1-7, wherein the data is carried on a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.
The method according to any one of claims 1-8, wherein the sequence length M ZC of the demodulation reference signal DMRS corresponding to the data is 2 or 3 or 4 or 6.
The method according to claim 9, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Among them, the first parameter
is determined according to the DMRS sequence length M ZC and the group index u.
The method according to any one of claims 1-10, wherein the acquiring the first information comprises:

The first information is obtained from itself or received from the network device.
The method according to any one of claims 1-11, wherein the method further comprises:

When the resource mapping type is the second type, a target resource on the first frequency domain resource is determined, and the target resource is a continuous resource on the first frequency domain resource.
The method according to any one of claims 1-12, characterized in that, comprising:

The second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling;

The third information is carried in radio resource control signaling, medium access control signaling or downlink control signaling.
A communication method, characterized in that the method is applicable to network equipment, comprising:

sending first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, where the first frequency domain resource is included in a physical resource block PRB;

When the resource mapping type is the first type, determining a target resource, where the target resource is a discontinuous resource on the first frequency domain resource;

Data is received or sent according to the target resource.
The method according to claim 14, wherein the determining the target resource comprises:

determining the target resource according to the second information and the third information;

Wherein, the second information includes first frequency domain resource indication information; the third information includes the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, the frequency domain interval At least one, the frequency domain interval represents an interval between two adjacent subcarriers.
The method according to claim 14 or 15, wherein the method further comprises:

determining the first parameter according to the scaling factor;

According to the first parameter, the number of bits included in the data is determined.
The method according to claim 16, wherein the scaling factor comprises a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N info satisfies one of the following formulas:

N info = β × N RE × R × Q m × ν, or

N info = S × N RE × R × Q m × ν, or

N info = β×S×N RE ×R×Q m ×ν

Wherein, R is the code rate, Q m is the modulation mode, v is the number of layers or streams to be transmitted, and N RE is the number of resource units used for the data transmission in a time slot.
The method according to any one of claims 14-17, wherein the method further comprises:

determining a time domain resource corresponding to the first frequency domain resource, where the time domain resource includes M time slots, where M is a positive integer;

When M is greater than or equal to 2, the target resource corresponding to each of the M time slots is determined.
The method according to claim 18, wherein the determining the target resource corresponding to each time slot of the M time slots comprises:

Determine the target resource corresponding to each of the M time slots according to the target resource and the subcarrier offset value corresponding to the first time slot of the M time slots; or

According to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, and the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots , the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value, determine the target corresponding to each time slot of the M time slots resource.
The method of claim 19, comprising:

The first subcarrier position information RE start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

or

Wherein, RE start represents the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE offset represents the offset value of the subcarrier, and mod represents the modulo operation,
Represents rounded down, i represents the slot index in 1 radio frame or represents the slot index in M time slots;

The number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

The interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval between subcarriers.
The method according to any one of claims 14-20, wherein the data is carried on a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.
The method according to any one of claims 14-21, wherein the sequence length M ZC of the demodulation reference signal DMRS corresponding to the data is 2 or 3 or 4 or 6.
The method according to claim 22, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Among them, the first parameter
is determined according to the DMRS sequence length M ZC and the group index u.
The method according to any one of claims 14-23, wherein the method further comprises:

When the resource mapping type is the second type, a target resource on the first frequency domain resource is determined, and the target resource is a continuous resource on the first frequency domain resource.
The method of any one of claims 14-24, comprising:

The second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling;

The third information is carried in radio resource control signaling, medium access control signaling or downlink control signaling.
A communication device, comprising:

a processing unit, configured to acquire first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, and the first frequency domain resource is included in a physical resource block PRB;

The processing unit is further configured to, when the resource mapping type is the first type, determine a target resource, where the target resource is a discontinuous resource on the first frequency domain resource;

A transceiver unit, configured to send or receive data according to the target resource.
The apparatus of claim 26, comprising:

The processing unit is specifically configured to determine the target resource according to the second information and the third information;

Wherein, the second information includes first frequency domain resource indication information; the third information includes the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, the frequency domain interval At least one, the frequency domain interval represents an interval between two adjacent subcarriers.
The device according to claim 26 or 27, wherein the processing unit is further configured to:

determining the first parameter according to the scaling factor;

According to the first parameter, the number of bits included in the data is determined.
The apparatus according to claim 28, wherein the scaling factor comprises a frequency-domain scaling factor β and/or a time-domain scaling factor S; the first parameter N info satisfies one of the following formulas:

N info = β × N RE × R × Q m × ν, or

N info = S × N RE × R × Q m × ν, or

N info = β×S×N RE ×R×Q m ×ν

Wherein, R is the code rate, Q m is the modulation mode, v is the number of layers or streams to be transmitted, and N RE is the number of resource units used for the data transmission in a time slot.
The device according to any one of claims 26-29, wherein the processing unit is further configured to:

determining a time domain resource corresponding to the first frequency domain resource, where the time domain resource includes M time slots, where M is a positive integer;

When M is greater than or equal to 2, the target resource corresponding to each of the M time slots is determined.
The apparatus according to claim 30, wherein the processing unit is specifically configured to:

Determine the target resource corresponding to each of the M time slots according to the target resource and the subcarrier offset value corresponding to the first time slot of the M time slots; or

According to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, and the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots , the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value, determine the target corresponding to each time slot of the M time slots resource.
The apparatus of claim 31, comprising:

The first subcarrier position information RE start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

or

Wherein, RE start represents the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE offset represents the offset value of the subcarrier, and mod represents the modulo operation,
Represents rounded down, i represents the slot index in 1 radio frame or represents the slot index in M time slots;

The number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

The interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval between subcarriers.
The apparatus according to any one of claims 26-32, wherein the data is carried on a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.
The apparatus according to any one of claims 26-33, wherein the sequence length M ZC of the demodulation reference signal DMRS corresponding to the data is 2 or 3 or 4 or 6.
The apparatus according to claim 34, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Among them, the first parameter
is determined according to the DMRS sequence length M ZC and the group index u.
The device according to any one of claims 26-35, characterized in that it comprises:

The processing unit is specifically configured to acquire the first information from itself; or

The transceiver unit is specifically configured to receive the first information from the network device.
The apparatus according to any one of claims 26-36, wherein the processing unit is specifically configured to, when the resource mapping type is the second type, determine the target resource on the first frequency domain resource, The target resource is a continuous resource on the first frequency domain resource.
The apparatus of any one of claims 26-37, comprising:

The second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling;

The third information is carried in radio resource control signaling, medium access control signaling or downlink control signaling.
A communication device, comprising:

a processing unit, sending first information, where the first information is used to indicate a resource mapping type on a first frequency domain resource, and the first frequency domain resource is included in a physical resource block PRB;

The processing unit is further configured to, when the resource mapping type is the first type, determine a target resource, where the target resource is a discontinuous resource on the first frequency domain resource;

A transceiver unit, configured to receive or send data according to the target resource.
The apparatus of claim 39, comprising:

The processing unit is specifically configured to determine the target resource according to the second information and the third information;

Wherein, the second information includes first frequency domain resource indication information; the third information includes the location information of the first subcarrier in the target resource, the number of subcarriers included in the target resource, the frequency domain interval At least one, the frequency domain interval represents an interval between two adjacent subcarriers.
The device according to claim 39 or 40, wherein the processing unit is further configured to:

determining the first parameter according to the scaling factor;

According to the first parameter, the number of bits included in the data is determined.
The apparatus according to claim 41, wherein the scaling factor comprises a frequency domain scaling factor β and/or a time domain scaling factor S; the first parameter N info satisfies one of the following formulas:

N info = β × N RE × R × Q m × ν, or

N info = S × N RE × R × Q m × ν, or

N info = β×S×N RE ×R×Q m ×ν

Wherein, R is the code rate, Q m is the modulation mode, v is the number of layers or streams to be transmitted, and N RE is the number of resource units used for the data transmission in a time slot.
The device according to any one of claims 39-42, wherein the processing unit is further configured to:

determining a time domain resource corresponding to the first frequency domain resource, where the time domain resource includes M time slots, where M is a positive integer;

When M is greater than or equal to 2, the target resource corresponding to each of the M time slots is determined.
The device according to claim 43, wherein the processing unit is specifically configured to:

Determine the target resource corresponding to each of the M time slots according to the target resource and the subcarrier offset value corresponding to the first time slot of the M time slots; or

According to the position information of the first subcarrier in the target resource corresponding to the first time slot of the M time slots, and the number of subcarriers included in the target resource corresponding to the first time slot of the M time slots , the interval between two adjacent subcarriers in the target resource corresponding to the first time slot of the M time slots and the subcarrier offset value, determine the target corresponding to each time slot of the M time slots resource.
The apparatus of claim 44, comprising:

The first subcarrier position information RE start (i) in the target resource corresponding to each of the M time slots satisfies the formula:

or

Wherein, RE start represents the position information of the first subcarrier in the target resource corresponding to the first time slot in the M time slots, RE offset represents the offset value of the subcarrier, and mod represents the modulo operation,
Represents rounded down, i represents the slot index in 1 radio frame or represents the slot index in M time slots;

The number of subcarriers included in the target resource corresponding to each of the M time slots is the number of subcarriers included in the target resource corresponding to the first time slot in the M time slots;

The interval between two adjacent subcarriers in the target resource corresponding to each of the M time slots is the interval between two adjacent subcarriers in the target resource corresponding to the first time slot in the M time slots. interval between subcarriers.
The apparatus according to any one of claims 39-45, wherein the data is carried on a physical downlink shared channel PDSCH or a physical uplink shared channel PUSCH.
The apparatus according to any one of claims 39-46, wherein the sequence length M ZC of the demodulation reference signal DMRS corresponding to the data is 2 or 3 or 4 or 6.
The apparatus according to claim 47, wherein the sequence generation of the demodulation reference signal DMRS satisfies the formula:

Among them, the first parameter
is determined according to the DMRS sequence length M ZC and the group index u.
The device according to any one of claims 39-48, wherein the processing unit is specifically configured to:

When the resource mapping type is the second type, a target resource on the first frequency domain resource is determined, and the target resource is a continuous resource on the first frequency domain resource.
The device according to any one of claims 39-49, characterized in that it comprises:

The second information is carried in radio resource control signaling or medium access control signaling or downlink control signaling;

The third information is carried in radio resource control signaling, medium access control signaling or downlink control signaling.
A communication device, characterized in that it includes at least one processor and an interface circuit, wherein the at least one processor is configured to communicate with other devices through the interface circuit, and executes the method according to any one of claims 1 to 25. method described.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores instructions that, when executed, cause the method of any one of claims 1 to 25 to be performed.
A computer program product, characterized in that the computer program product comprises: computer program code, which, when executed by a computer, causes the computer to execute the method according to any one of claims 1 to 25 .