CN112369068B

CN112369068B - Resource mapping mode indication method and related product

Info

Publication number: CN112369068B
Application number: CN201880095295.1A
Authority: CN
Inventors: 赵振山; 卢前溪; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2018-09-25
Filing date: 2018-09-25
Publication date: 2022-01-04
Anticipated expiration: 2038-09-25
Also published as: WO2020061755A1; TW202019220A; CN112369068A

Abstract

The embodiment of the invention discloses a resource mapping mode indicating method and a related product, wherein the method comprises the following steps: acquiring first configuration information; determining a resource mapping mode of a first sidelink transmission channel according to the first configuration information; and receiving the first sidelink transmission channel according to the resource mapping mode. The embodiment of the invention is beneficial to improving the flexibility of the resource mapping mode indication and improving the utilization rate of the frequency spectrum resources.

Description

Resource mapping mode indication method and related product

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a resource mapping manner indication method and a related product.

Background

The vehicle networking system is based on Long Term Evolution (LTE) -a Sidelink transmission technology (Sidelink) from a terminal to a terminal (D2D), and is different from a mode that communication data in a traditional LTE system is received or sent through a base station, the vehicle networking system adopts a terminal-to-terminal direct communication mode, and in application scenes such as automatic driving and the like in the future, users put forward higher requirements on data interaction between vehicles, such as higher throughput, lower time delay, higher reliability, larger coverage, more flexible resource allocation and the like.

Disclosure of Invention

Embodiments of the present invention provide a resource mapping method indication method and a related product, so as to improve the flexibility of a communication system indicating a resource mapping method and improve the utilization rate of spectrum resources.

In a first aspect, an embodiment of the present invention provides a method for indicating a resource mapping manner, where the method is applied to a first terminal, and the method includes:

acquiring first configuration information;

determining a resource mapping mode of a first sidelink transmission channel according to the first configuration information;

and receiving the first sidelink transmission channel according to the resource mapping mode.

In a second aspect, an embodiment of the present invention provides a terminal, where the terminal is a first terminal, the first terminal includes a processing unit and a communication unit,

the processing unit is used for acquiring first configuration information through the communication unit; determining a resource mapping mode of a first sidelink transmission channel according to the first configuration information; and receiving the first sidelink transmission channel by the communication unit according to the resource mapping mode.

In a third aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing the steps in any of the methods of the first aspect of the embodiments of the present invention.

In a fourth aspect, the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps described in any one of the methods according to the first aspect of the present invention.

In a fifth aspect, the present invention provides a computer program product, wherein the computer program product comprises a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps as described in any one of the methods of the first aspect of the embodiments of the present invention. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present invention, the first terminal first obtains the first configuration information, then determines the resource mapping manner of the first sideline transmission channel according to the first configuration information, and finally receives the first sideline transmission channel according to the resource mapping manner. The configuration information can configure resource mapping modes under different conditions (such as different subcarrier intervals), so that the first terminal can more flexibly utilize spectrum resource mapping data, the situation that the first terminal cannot accurately adapt to various scenes by using a fixed resource mapping mode is avoided, the flexibility of the system configuration resource mapping mode is improved, and the utilization rate of spectrum resources is improved.

Drawings

Reference will now be made in brief to the drawings that are needed in describing embodiments or prior art.

Fig. 1A is a network architecture diagram of a communication system in a vehicle networking system according to an embodiment of the present invention;

FIG. 1B is a network architecture diagram of another Internet of vehicles communication system provided by an embodiment of the present invention;

fig. 1C is a diagram illustrating a structure of a subframe according to an embodiment of the present invention;

fig. 2A is a flowchart illustrating a method for indicating a resource mapping manner according to an embodiment of the present invention;

fig. 2B is a diagram illustrating an example of a resource mapping manner of a time domain symbol according to an embodiment of the present invention;

fig. 2C is a diagram illustrating a waveform of a time domain symbol in a time domain period according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 4 is a block diagram illustrating functional units of a terminal according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings.

The technology of vehicle networking is standardized in the Third Generation partnership Project (3 GPP) release 14(Rel-14), defining two modes of transmission: mode 3 and mode 4.

Mode 3: referring to fig. 1A, transmission resources of a terminal are allocated by a base station, and the terminal performs data transmission on a sidelink according to the resources allocated by the base station; the base station can allocate resources for single transmission to the terminal and can also allocate resources for semi-static transmission to the terminal; the base station allocates the side link transmission resource through Downlink (DL) control signaling.

Mode 4: referring to fig. 1B, the terminal uses a transmission mode of listening (sensing) and reserving (reserving). The terminal acquires an available transmission resource set in a resource pool in an interception mode, and randomly selects a resource from the set to transmit data. Because the service in the car networking system has a periodic characteristic, the terminal generally adopts a semi-static transmission mode, that is, after the terminal selects one transmission resource, the resource is continuously used in a plurality of transmission cycles, so that the probability of resource reselection and resource conflict is reduced. The terminal can carry the information of the reserved secondary transmission resource in the control information transmitted this time, so that other terminals can judge whether the resource is reserved and used by the user by detecting the control information of the user, and the purpose of reducing resource conflict is achieved.

When the terminal accesses a mobile communication network provided by the base station, the terminal and the base station may be in communication connection through a wireless link, where the communication connection may be a single connection mode, a dual connection mode, or a multiple connection mode, and when the communication connection is a single connection mode, the base station may be an LTE base station or an NR base station (also referred to as a gNB base station), and when the communication connection is a dual connection mode (specifically, it may be implemented through a carrier aggregation CA technology, or multiple base stations), and when the terminal is connected to multiple base stations, the multiple base stations may be a main base station and an auxiliary base station, data backhaul is performed between the base stations through a backhaul link, the main base station may be an LTE base station, and the auxiliary base station may be an LTE base station, or the main base station may be an NR base station, and the auxiliary base station may be an NR base station. The terminal according to the embodiment of the present invention may include various handheld devices, vehicle-mounted devices, computing devices or other processing devices connected to a wireless modem, and various forms of User Equipment (UE), Mobile Stations (MS), terminal devices (terminal device), Roadside units (RSU), and the like, which have a wireless communication function. For convenience of description, the above-mentioned terminals are collectively referred to as terminals.

In new air to Vehicle (NR) -to-other devices (V2X), automatic driving needs to be supported, and therefore higher requirements are placed on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, greater coverage, more flexible resource allocation, and the like.

In LTE-V2X, Demodulation Reference signals (DMRSs) of a Physical downlink Control Channel (PSCCH) and a Physical downlink Shared Channel (PSCCH) have the same format, and 4 time domain symbols in one subframe are used for transmitting DMRSs, as shown in fig. 1C. The first symbol is used as an AGC (Automatic Gain Control) for the receiving end to adjust received parameters, and the transmitting end maps data to be transmitted on the symbol, but at the receiving end, the data of the symbol is not usually used for data demodulation; the last symbol is used as a GP (Guard Period), and data to be transmitted is mapped on the symbol at the transmitting end, but the data on the symbol is not transmitted, or the data to be transmitted is not mapped on the symbol at the transmitting end, and generally, the symbol is used for transmit-receive conversion (or called transmit-receive conversion); other time domain symbols are used for transmitting PSCCH or PSCCH data.

In LTE-V2X, the subcarrier spacing of the system is fixed at 15kHz, so a time-domain symbol corresponds to a time length of approximately 67us (microseconds). In the NR-V2X system, the subcarrier spacing of the system may be 15kHz/30kHz/60kHz/120kHz, etc., and the length of a time domain symbol is about 67us/33us/16us/8us, etc., if the terminal performs the transmit-receive conversion for about 13us, the time-receive conversion may occupy different time domain symbols according to the size of the subcarrier spacing, for example, the transmit-receive conversion time may occupy a part of a time domain symbol, or 2 time domain symbols. Therefore, how to flexibly indicate the resource mapping manner is a problem to be solved.

In order to solve the problem, the application provides a resource mapping method for a time domain symbol of a time unit in an internet of vehicles system, data can be completely mapped, all the data are empty, part of the data are mapped on the time domain symbol, and a specific mapping mode is determined through configuration information. The following is a detailed description.

Referring to fig. 2A, fig. 2A is a method for indicating a resource mapping manner, which is applied to a first terminal in a communication system, such as an LTE-V2X system, according to an embodiment of the present invention, and the method includes:

step 201, the first terminal acquires first configuration information;

in an embodiment, the first configuration information includes first indication information, and the first indication information is used to indicate a resource mapping manner of the first sidelink transport channel.

In an embodiment, the first configuration information is used to describe a correspondence between index information and a resource mapping manner of a sidelink transport channel

In an embodiment, the first configuration information is used to describe a correspondence between a basic parameter set of a sidelink transmission channel and a resource mapping manner of the transmission channel, such as a correspondence between a subcarrier spacing size of the sidelink transmission channel and the resource mapping manner of the transmission channel.

In an embodiment, the first configuration information is used to describe a correspondence between a carrier frequency of a sidelink transmission channel and a resource mapping manner of the transmission channel.

Step 202, the first terminal determines a resource mapping manner of the first sidelink transmission channel according to the first configuration information.

The resource mapping mode is used to represent a mapping relationship between a resource unit of at least one time domain symbol of the first sidelink transmission channel and data to be transmitted, such as a mapping relationship between a resource unit of a first time domain symbol and data to be transmitted, or a mapping relationship between a resource unit of a last time domain symbol and data to be transmitted, and the like.

In one possible example, the resource mapping manner includes a first resource mapping manner and/or a second resource mapping manner, where the first resource mapping manner is applicable to a first time domain symbol of a time unit, such as a time domain symbol used as an AGC, and the second resource mapping manner is applicable to a last time domain symbol of a time unit, such as a time domain symbol used as a GP.

One Time unit may be a slot, a subframe, a short Transmission Time Interval (sTTI), or a Time unit used for transmitting the first sidelink channel.

For example, one subframe includes both a physical side row control channel PSCCH and a physical side row shared channel PSCCH, two of which are in a Time Division Multiplexing (TDM) mode, the PSCCH occupies the first 6 Time domain symbols, the PSCCH occupies the remaining 8 Time domain symbols, and one Time unit is 6 Time domain symbols for the PSCCH; for psch, one time unit is 8 time domain symbols.

In one possible example, the resource mapping manner of the first sidelink transmission channel includes at least one of: the first time domain symbol does not map data, and every K resource units map one data on the first time domain symbol, wherein the first time domain symbol is one time domain symbol in a time unit where the first side row transmission channel is located, and K is a positive integer. Further, the resource unit on the first time domain symbol is a resource unit in the frequency domain range of the first sidelink transmission channel.

The mapping of each K resource units to one data means that the data to be transmitted is mapped to a resource unit corresponding to a resource unit index (N _ RB _ start 12+ K + m), where N _ RB _ start represents a frequency domain starting resource block position of a first side row transmission channel, K is 0,1, 2, 3 …, m is a positive integer less than K or 0, and m may be preconfigured, or network configured, or configured by other terminals; the value of K should satisfy that (N _ RB _ start 12+ K + m) the corresponding frequency domain resource unit is in the frequency domain resource range of the first sideline transmission channel. For example, the frequency domain Resource range of the first sidelink transport channel is the index [10,19] of a Physical Resource Block (PRB), and 10 PRBs in total, N _ RB _ start is 10, and N _ RB _ start is 12+ K + m is a Resource unit equal to or greater than 120 and equal to or less than 239.

For example, in the NR-V2X system, the subcarrier spacing of the system may be 15kHz/30kHz/60kHz/120kHz, etc., and the length of a time domain symbol is about 67us/33us/16us/8us, etc., if the terminal performs a transmit-receive conversion for about 13us, the time of the transmit-receive conversion may occupy different time domain symbols according to the size of the subcarrier spacing, for example, the transmit-receive conversion time may occupy a part of a symbol, or a time domain symbol, or 2 time domain symbol transmit-receive conversion times may occupy a part of a symbol, or a time domain symbol, or 2 time domain symbols.

In order to more effectively improve the resource utilization of the system, a resource mapping manner as shown in fig. 2B may be adopted: fig. 2B only illustrates the way of improving the resource utilization of GP symbols, and the same applies to AGC symbols. In fig. 2B, on the last symbol used as GP, 1 data to be transmitted is mapped on every two subcarriers, specifically, data is mapped on resource units with even indices, and data is not mapped on resource units with odd indices. According to the time-frequency conversion characteristic principle of fourier transform, the time-domain signal of the symbol is characterized in that two repeated time-domain waveforms exist in the time range corresponding to the time-domain symbol, as shown in fig. 2C, where T represents the time length of one time-domain symbol, and the time-domain waveforms are repeated twice in T. At the sending end, the latter half part of the signal may not be sent, and at the receiving end, the data sent by the sending end on the last time domain symbol may be recovered through signal processing according to the received first half part of the data. Therefore, in NR-V2X, the way of resource mapping may be different at different subcarrier spacings. For example, at 15kHz subcarrier spacing, one data may be mapped every 4 subcarriers on the last time domain symbol, one data may be mapped every 2 subcarriers at 30kHz, and no data may be mapped on the last symbol at 60 kHz.

In specific implementation, because a preset operation (such as a transmit-receive conversion operation or an automatic gain control adjustment operation) associated with a time domain symbol is generally agreed by a protocol, but the duration of the time domain symbol and the processing duration of the preset operation are not fixed, based on the characteristic that the duration is variable, a reasonable value interval of K can be determined by constraints of the two durations, so that when the preset operation is processed for a sufficient duration, the remaining duration can be fully utilized to map data to be transmitted, and thus the spectrum resource utilization rate is improved. In short, the time period of the current time domain symbol, to which no data is mapped, is greater than or equal to the preset operation time (such as the above-mentioned transmit-receive switching time) associated with the time domain symbol, or the time periods of the current time domain symbol and the adjacent at least one time domain symbol are greater than or equal to the preset operation time associated with the time domain symbol. The principle is explained in detail below with reference to examples.

In a first example, for a first time domain symbol, K is determined based on an automatic gain control adjustment time and a time of the time domain symbol. From the essential characteristics of fourier transform, if a data is mapped to every K resource units on the first time domain symbol of the first sidelink transmission channel, the waveform is repeated K times within the time range of the time domain symbol, wherein the duration of one waveform in the repeated waveform should be greater than or equal to the agc adjustment time, so that the number K can be calculated according to the duration of the repeated waveform.

For example, for the case that the subcarrier spacing is 15kHz, that is, the length of the first time-domain symbol is about 67us, if the agc adjustment time is 13us, the duration t of the repeated waveform of the time-domain symbol in one time-domain period should be greater than 13us, and the calculated number K may be 4(67us/4 ≈ 16.75us), 3(67us/3 ≈ 22.33us), 2(67us/2 ≈ 33.35us), or 1(67us/1 ≈ 67 us). For example, when K is 4, that is, one data is mapped every 4 resource units in the frequency domain, and in the time domain, the waveform is repeated 4 times within the time range of one time domain symbol, the duration of each waveform is 16.75us, the receiving end may perform automatic gain control using the signal corresponding to the first repeated waveform, and the signals corresponding to the last three repeated waveforms may be used for data demodulation. When K is 2, that is, mapping one data per 2 resource units in the frequency domain, and in the time domain, within the time range of one time domain symbol, the waveform repeats 2 times, and the duration of each waveform is 33.35us, the receiving end can perform automatic gain control using the signal corresponding to the waveform of the first repetition, and the signal corresponding to the waveform of the second repetition can be used for data demodulation, in this case, compared to the case of K being 4, more data can be mapped in the frequency domain when K is 2, but in the time domain, because only the data of the second waveform can be used for demodulation, half of the signal energy is available, the effective energy is 1/2 of the total energy of the whole symbol, and when K is 4, three repeated time domain waveforms can be used for demodulation, and the effective energy is 3/4 of the total energy of the whole symbol. When K is 1, a waveform is not repeated in the time range of one time domain symbol, and a part of a time domain signal corresponding to the waveform is used for automatic gain control, which may result in data loss of the part and affect demodulation performance, so that no signal on the symbol is available, similar to the case that the first time domain symbol in LTE-V2X is used for AGC.

For example, for the case that the subcarrier spacing is 30kHz, that is, the length of the first time-domain symbol is about 33us, if the agc adjustment time is 13us, the duration t of the repeated waveform of the time-domain symbol in one time-domain period should be greater than 13us, and the calculated number K may be 2(33/2 ═ 16.5us), or 1(33/1 ═ 33 us).

For example, for the case that the subcarrier spacing is 60kHz, that is, the length of the first time-domain symbol is about 16us, if the agc adjustment time is 13us, the duration t of the repeated waveform of the time-domain symbol in one time-domain period should be greater than 13us, and the calculated number K may be 1(16/1 ═ 16 us).

For example, for the case that the subcarrier spacing is 120kHz, that is, the length of the first time domain symbol is about 8us, if the agc adjustment time is 13us, the duration t of the repeated waveform of the time domain symbol in one time domain period should be greater than 13us, and since the length of the entire time domain symbol is less than 13us, the signal of the time domain symbol is used as the agc adjustment, and in addition, the signal of the second time domain symbol is also used as the agc adjustment, that is, the resource units of the first and second symbols are mapped with data, but this part of data is not used for data demodulation at the receiving end, but is used as the agc adjustment operation, so as to ensure that the agc adjustment has enough processing duration.

Alternatively, the symbol used for the automatic gain control adjustment operation may be mapped not with data to be transmitted but with other data, for example, randomly generated data.

It can be seen that, in this example, if the resource unit of the first symbol can guarantee that the agc adjustment transceiving operation is normally performed, a part of the resource units are mapped to improve the resource utilization, and if the whole resource unit of the first symbol cannot guarantee that the agc adjustment transceiving operation is performed, at least one adjacent symbol is further configured to jointly guarantee the agc adjustment transceiving operation, thereby improving the data transmission stability.

In a second example, for a last time domain symbol, K is determined based on a transmit-receive transition time associated with the last time domain symbol and a time of the time domain symbol; from the essential characteristics of fourier transform, if a data is mapped to every K resource units on the last time domain symbol of the first sidelink transmission channel, the waveform is repeated K times within the time range of the time domain symbol, wherein the duration of one waveform in the repeated waveform should be greater than or equal to the transmit-receive conversion time, so that the number K can be calculated according to the duration of the repeated waveform.

For example, for the case that the subcarrier interval is 15kHz, that is, the length of one time domain symbol is about 67us, if the processing duration of the transmit-receive conversion operation is 13us, the duration t of the repeated waveform of the time domain symbol in one time domain period should be greater than 13us, and the calculated number K may be 4(67us/4 ≈ 16.75us), or 3(67us/3 ≈ 22.33us), or 2(67us/2 ≈ 33.35us), or no data is mapped on the last time domain symbol, or data is mapped on the last time domain symbol, but data on the symbol is not transmitted. For example, when K is 4, that is, one data is mapped every 4 resource units in the frequency domain, and in the time domain, the waveform is repeated 4 times within the time range of one time domain symbol, the duration of each waveform is 16.75us, the transmitting end of the first side line transmission channel may transmit signals corresponding to the first three repeated waveforms, and does not transmit a signal corresponding to the last repeated waveform, and the time of the last repeated waveform is used for performing the transmission/reception conversion. For another example, when K is 2, that is, one data is mapped in every 2 resource units in the frequency domain, and in the time domain, the waveform is repeated 2 times within the time range of one time domain symbol, the duration of each waveform is 33.35us, the transmitting end of the first sideline transmission channel may transmit a signal corresponding to the first repeated waveform, and not transmit a signal corresponding to the second repeated waveform, and the time of the second repeated waveform is used for performing the transmission/reception conversion. At this time, more data can be mapped in the frequency domain when K is 2 as compared to the case when K is 4, but in the time domain, since only the data of the first waveform is transmitted, half of the signal energy is available, and the effective energy is 1/2 of the total energy of the whole symbol, while when K is 4, the data of three repeated time domain waveforms is transmitted, and the effective energy is 3/4 of the total energy of the whole symbol. For another example, no data is mapped on the last time domain symbol, so the entire time domain symbol can be used for transceive conversion. Also for example, data is mapped on the last time domain symbol, but data on the time domain symbol is not transmitted, similar to the case where the last time domain symbol in LTE-V2X is used for a GP.

For example, for the case that the subcarrier interval is 30kHz, that is, the length of one time domain symbol is about 33us, if the processing duration of the transmit-receive conversion operation is 13us, the duration t of the repeated waveform of the time domain symbol in one time domain period should be greater than 13us, and the calculated number K may be 2(33us/2 ═ 16.5us), or no data is mapped on the last time domain symbol, or data is mapped on the last time domain symbol, but data on the symbol is not transmitted.

For example, for the case that the subcarrier spacing is 60kHz, that is, the length of one time domain symbol is about 16us, if the processing duration of the transmit-receive conversion operation is 13us, the duration t of the repeated waveform of the time domain symbol in one time domain period should be greater than 13us, so that no data is mapped on the last time domain symbol, or data is mapped on the last time domain symbol, but data on the symbol is not transmitted.

For example, for the case that the subcarrier spacing is 120kHz, that is, the length of one time domain symbol is about 8us, if the processing duration of the transmit-receive conversion operation is 13us, since the length of the entire time domain symbol is less than 13us, no data is mapped on the last two time domain symbols, or data is mapped on the last two time domain symbols, but data on the symbols is not transmitted, so as to ensure that the transmit-receive conversion operation has sufficient processing duration.

As can be seen, in this example, if the resource unit of the last symbol is capable of mapping part of the resource units to data to improve the resource utilization rate on the premise of ensuring that the transmission/reception conversion operation is normally performed, and if the time of the last symbol is not capable of ensuring that the transmission/reception conversion operation is performed, at least one adjacent symbol is further configured to ensure the transmission/reception conversion operation together, so as to improve the data transmission stability.

As can be seen, in this example, the resource mapping manner specifically includes a resource mapping manner for a first or a last time domain symbol on a time unit, so that a mapping relationship between the resource unit of the first or the last time domain symbol and data to be transmitted can be flexibly configured, and flexibility and efficiency of configuring the resource mapping manner are improved.

Step 203, the first terminal receives the first sidelink transmission channel;

wherein the first sidelink transmission channel comprises any one of: a physical side row control channel PSCCH, a physical side row shared channel PSSCH, a physical side row broadcast channel PSBCH or a physical side row feedback channel.

In one possible example, the first configuration information includes first indication information, and the first indication information is used to indicate a resource mapping manner of the first sidelink transmission channel.

In a specific implementation, the first configuration information may be a signaling or a message dedicated to indicate a resource mapping manner of the first sideline transport channel, and may be specifically issued by a network device, or sent by another terminal, or specified by a protocol, which is not limited herein.

For example, the protocol may predefine each frequency domain resource mapping data on the first time domain symbol of the PSBCH, and not mapping data on the last time domain symbol.

For another example, the network sends first configuration information indicating that each frequency domain resource on the first time domain symbol of the PSCCH maps data, and each 2 resource units on the last time domain symbol maps data. For example, the first configuration information includes the following information: x1 ═ 1, X2 ═ 2, where X1 ═ 1 denotes each frequency domain resource mapping data on the first time domain symbol of the PSCCH; x2 ═ 2 denotes that one data is mapped every 2 frequency domain resources on the last time domain symbol of the PSCCH. Further, the protocol predefined data is mapped on even resource units.

As can be seen, in this example, the first configuration information acquired by the first terminal may directly indicate the resource mapping manner of the first sidelink transport channel, so as to improve the efficiency of configuring the resource mapping manner.

In one possible example, the first configuration information includes a first corresponding relationship, and the first corresponding relationship is a corresponding relationship between at least one basic parameter set and at least one resource mapping manner.

Wherein the basic parameter set comprises at least one of: the carrier information of the first sideline transmission channel, the subcarrier interval of the first sideline transmission channel, the cyclic prefix length or type of the first sideline transmission channel, the transmitting-receiving switching time and the automatic gain control adjusting time.

Wherein the carrier information includes carrier index information and/or carrier frequency information.

In a first example, the first corresponding relationship includes a corresponding relationship between a subcarrier spacing size and a resource mapping manner. As shown in table 1, X represents that one to-be-transmitted data is mapped on every X resource units in the frequency domain resources on a certain time domain symbol of a time unit. The first terminal may determine the resource mapping manner of the last time domain symbol (i.e., GP symbol) according to the subcarrier spacing of the first sidelink transport channel and table 1.

TABLE 1

Subcarrier spacing (KHz)	Resource mapping mode (X)
		15	4
30	2
		60	Unmapped data

In a second example, a table of resource mapping modes is preconfigured or configured by the network, as shown in table 2: where X ═ k (k ═ 1,2,4,8) denotes that one data is mapped per X resource units in the frequency domain resources of a certain time domain symbol of one time unit.

TABLE 2

Further, the network sends first configuration information to the first terminal, where the first configuration information includes a first corresponding relationship, and the first corresponding relationship includes a corresponding relationship between the subcarrier spacing size and the resource mapping scheme index, as shown in table 3:

TABLE 3

Subcarrier spacing (KHz)	Resource mapping mode index
		15	2
30	1
		60	4
120	5

The first terminal may determine the resource mapping manner of the last time domain symbol (i.e., GP symbol) according to table 2, table 3 and the subcarrier spacing of the first sidelink transmission channel. For example, if the subcarrier spacing of the first side row transmission channel is 30kHz, it can be determined from table 3 and table 2 that one data is mapped every 2 resource units on the frequency domain resources of the first side row transmission channel.

In a third example, the first corresponding relationship includes a corresponding relationship between a carrier frequency and a resource mapping manner. As shown in table 4, X represents that one to-be-transmitted data is mapped on every X resource units in the frequency domain resources on a certain time domain symbol of a time unit.

TABLE 4

Carrier frequency (GHz)	Resource mapping mode (X)
		≤6	2
>6	1

In a fourth example, the network configures or pre-configures a table of resource mappings, as shown in table 2 above. The first corresponding relationship includes a corresponding relationship between the carrier frequency and the resource mapping manner index, as shown in table 5:

TABLE 5

Carrier frequency (GHz)	Resource mapping mode index
		≤6	1
>6	0

The first terminal may determine the resource mapping manner of the first time domain symbol (i.e., the AGC symbol) according to table 2, table 5 and the carrier frequency of the first sidelink transmission channel. For example, if the carrier frequency of the first sidelink transmission channel is 5.9GHz, it can be determined from table 5 and table 2 that one data is mapped to every 2 resource units on the frequency domain resource of the first sidelink transmission channel.

In a fifth example, the first corresponding relationship includes a corresponding relationship between a basic parameter set (subcarrier spacing size and carrier frequency) and a resource mapping manner. As shown in table 6, X represents that one to-be-transmitted data is mapped to every X resource units in the frequency domain resources on a certain time domain symbol of a time unit.

TABLE 6

In one possible example, the determining, by the first terminal, a resource mapping manner of the first sidelink transmission channel according to the first configuration information includes: the first terminal acquires a first basic parameter set of the first sidelink transmission channel; and determining a resource mapping mode of the first sideline transmission channel according to the first basic parameter set and the first corresponding relation.

Wherein the first set of basic parameters comprises at least one of the following information: the carrier information of the first sideline transmission channel, the subcarrier interval of the first sideline transmission channel, the cyclic prefix length or type of the first sideline transmission channel, the transmitting-receiving switching time and the automatic gain control adjusting time.

As can be seen, in this example, the first terminal may query the first corresponding relationship according to the first basic parameter set of the first sideline transmission channel to obtain the corresponding resource mapping manner, so that the query efficiency and accuracy are high, and the resource mapping manner configuration efficiency is improved.

In one possible example, the obtaining, by the first terminal, a first basic parameter set of the first sidelink transmission channel includes: the first terminal acquires pre-configuration information; and acquiring a first basic parameter set of the first sideline transmission channel according to the pre-configuration information.

In one possible example, the preconfiguration information includes second indication information indicating a first basic parameter set of the first sideline transmission channel.

For example, the pre-configuration information may include a basic parameter set corresponding to a pre-configured sidelink channel type, for example, PSBCH employs 15kHz subcarrier spacing.

In one possible example, the preconfiguration information includes resource pool indication information or Bandwidth Part (BWP) indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or Bandwidth Part; the first terminal acquires a first basic parameter set of the first sidelink transmission channel according to the pre-configuration information, and the method comprises the following steps: and the first terminal acquires a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

For example, the indication information indicates information such as the subcarrier spacing used by the resource pool or BWP.

As can be seen, in this example, the first basic parameter set may be obtained by preconfigured information, where the preconfigured information may be dedicated indication information, resource pool indication information, or bandwidth part indication information, and the implementation manner is flexible and various, so as to improve flexibility of obtaining the first basic parameter set.

In one possible example, the obtaining, by the first terminal, a first basic parameter set of the first sidelink transmission channel includes: the first terminal receives second configuration information from the network equipment; and acquiring a first basic parameter set of the first sideline transmission channel according to the second configuration information.

As can be seen, in this example, the first terminal may specifically receive the second configuration information of the network device, and then obtain the first basic parameter set according to the second configuration information, that is, the network side indicates the first basic parameter set, so that real-time and efficient operation is achieved.

It should be understood that if the first configuration information and the second configuration information are both from a network device, the first configuration information and the second configuration information may be the same configuration information.

In one possible example, the second configuration information includes third indication information indicating a first set of basic parameters of the first sidelink transmission channel.

In one possible example, the second configuration information includes resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; the first terminal acquires a first basic parameter set of the first sideline transmission channel according to the second configuration information, and the first basic parameter set comprises: and the first terminal acquires a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

As can be seen, in this example, since the second configuration information may be dedicated indication information or resource pool indication information or bandwidth part indication information, the implementation manner is flexible and various, and the flexibility of obtaining the first basic parameter set is improved.

In one possible example, the obtaining, by the first terminal, a first basic parameter set of the first sidelink transmission channel includes: the first terminal receives a second sidelink transmission channel, and the second sidelink transmission channel carries third configuration information; and acquiring a first basic parameter set of the first sideline transmission channel according to the third configuration information.

It can be seen that, in this example, the first terminal is capable of receiving the third configuration information of the second sidelink transmission channel and determining the first set of basic parameters, which is indicated by the second sidelink transmission channel.

It should be understood that the first terminal receives the second sidelink for obtaining the third configuration information, and the first terminal receives the fourth sidelink for obtaining the first configuration information, and the second sidelink and the fourth sidelink may be from the same terminal or different terminals, and if the second sidelink and the fourth sidelink may be from the same terminal, the second sidelink and the fourth sidelink may be the same sidelink.

In one possible example, the third configuration information includes fourth indication information indicating a first set of basic parameters of the first sidelink transmission channel.

In one possible example, the third configuration information includes resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; the first terminal acquires a first basic parameter set of the first sideline transmission channel according to the third configuration information, and the first basic parameter set includes: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

As can be seen, in this example, since the third configuration information may be dedicated indication information or resource pool indication information or bandwidth part indication information, the implementation manner is flexible and various, and the flexibility of obtaining the first basic parameter set is improved.

In one possible example, the first terminal receiving a second sidelink transmission channel includes: the first terminal receives a second sidelink transmission channel sent by a second terminal, wherein the second terminal is the terminal sending the first sidelink transmission channel; or receiving a second sidelink transmission channel sent by a third terminal.

Under the condition that the second terminal sends the configuration information, the first terminal is a group member, and the group head can send the configuration information, the resource pool indication information and the like to the group member; in the case of transmission by the third terminal, the third terminal is the group head, and the first and second terminals are the group members.

As can be seen, in this example, the second sidelink transport channel may be sent by a group head terminal such as the second terminal or the third terminal, so as to improve flexibility of transmitting the second sidelink transport channel.

In one possible example, the second sidelink transmission channel is a physical sidelink control channel PSCCH; or, the second sidelink transport channel is a physical sidelink shared channel PSSCH. Or, the second sidelink transmission channel is a physical sidelink broadcast channel PSBCH.

In one possible example, the first configuration information includes a second corresponding relationship, and the second corresponding relationship is a corresponding relationship between at least one index information and at least one resource mapping manner.

The index refers to an index of a resource mapping manner, as shown in table 2.

In one possible example, the determining, by the first terminal, a resource mapping manner of the first sidelink transmission channel according to the first configuration information includes: the first terminal acquires first index information of the first sideline transmission channel; and determining a resource mapping mode of the first sideline transmission channel according to the second corresponding relation and the first index information.

In one possible example, the first index information is pre-configured or the first index information is network configured.

For example, the index of the resource mapping manner of the GP symbol of the PSBCH is preconfigured to be index 1, the first terminal may obtain the index of the resource mapping manner of the PSBCH according to the preconfigured information, and the resource mapping manner of the GP symbol of the PSBCH may be determined by combining the second corresponding relationship, that is, the corresponding relationship between the resource mapping manner index and the resource mapping manner.

In one possible example, the obtaining, by the first terminal, first index information of the first sidelink transport channel includes: the first terminal receives a third side row transmission channel, wherein the third side row transmission channel carries the first index information; and acquiring the first index information according to the third side row transmission channel.

In one possible example, the first terminal receives a third side row transmission channel, including: the first terminal receives a third sidelink transmission channel sent by a second terminal, wherein the second terminal is the terminal sending the first sidelink transmission channel; or receiving a third side row transmission channel sent by a fourth terminal.

In one possible example, the third side row transmission channel is a physical side row control channel PSCCH; or, the third side row transport channel is a physical side row shared channel PSSCH.

In one possible example, the first configuration information is pre-configured or network configured.

In one possible example, the obtaining, by the first terminal, first configuration information includes: the first terminal receives a fourth side row transmission channel, and the fourth side row transmission channel carries the first configuration information; and acquiring the first configuration information according to the fourth side row transmission channel.

In one possible example, the fourth side row transmission channel is a physical side row control channel PSCCH; or, the fourth side row transport channel is a physical side row shared channel PSSCH.

As can be seen, in this example, the first terminal may obtain the first configuration information by receiving the fourth side transmission channel, and since the fourth side transmission channel may be flexibly configured by other terminals or network devices, the flexibility of configuration of the first configuration information may be improved.

In one possible example, the first sidelink transmission channel comprises any one of: a physical side row control channel PSCCH, a physical side row shared channel PSSCH, a physical side row broadcast channel PSBCH, a physical side row discovery channel PSDCH and a physical side row feedback channel.

Referring to fig. 3, in accordance with the embodiment shown in fig. 2A, fig. 3 is a schematic structural diagram of a terminal 300 (a first terminal as described above) according to an embodiment of the present invention, as shown in the figure, the terminal 300 includes a processor 310, a memory 320, a communication interface 330, and one or more programs 321, where the one or more programs 321 are stored in the memory 320 and configured to be executed by the processor 310, and the one or more programs 321 include instructions for performing the following steps:

acquiring first configuration information;

In one possible example, in terms of determining the resource mapping manner of the first sidelink transmission channel according to the first configuration information, the instructions in the program are specifically configured to perform the following operations: acquiring a first basic parameter set of the first sideline transmission channel; and determining a resource mapping mode of the first sideline transmission channel according to the first basic parameter set and the first corresponding relation.

In one possible example, the first set of basic parameters comprises at least one of the following information:

the carrier information of the first sideline transmission channel, the subcarrier interval of the first sideline transmission channel, the cyclic prefix length or type of the first sideline transmission channel, the transmitting-receiving switching time and the automatic gain control adjusting time.

In one possible example, in the obtaining the first basic parameter set of the first sideline transmission channel, the instructions in the program are specifically configured to: acquiring preconfigured information; and acquiring a first basic parameter set of the first sideline transmission channel according to the pre-configuration information.

In one possible example, the preconfiguration information comprises resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; in the aspect of obtaining the first basic parameter set of the first sideline transmission channel according to the preconfigured information, the instructions in the program are specifically configured to: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

In one possible example, in the obtaining the first basic parameter set of the first sideline transmission channel, the instructions in the program are specifically configured to: receiving second configuration information from the network device; and acquiring a first basic parameter set of the first sideline transmission channel according to the second configuration information.

In one possible example, the second configuration information includes resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; in the aspect of obtaining the first basic parameter set of the first sideline transmission channel according to the second configuration information, the instructions in the program are specifically configured to: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

In one possible example, in the obtaining the first basic parameter set of the first sideline transmission channel, the instructions in the program are specifically configured to: receiving a second sidelink transmission channel, wherein the second sidelink transmission channel carries third configuration information; and acquiring a first basic parameter set of the first sideline transmission channel according to the third configuration information.

In one possible example, the third configuration information includes resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; in the aspect of obtaining the first basic parameter set of the first sideline transmission channel according to the third configuration information, the instructions in the program are specifically configured to: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

In one possible example, in the aspect of receiving the second sidelink transmission channel, the instructions in the program are specifically configured to: receiving a second sidelink transmission channel sent by a second terminal, wherein the second terminal is the terminal sending the first sidelink transmission channel; or receiving a second sidelink transmission channel sent by a third terminal.

In one possible example, the second sidelink transmission channel is a physical sidelink control channel PSCCH; or, the second sidelink transport channel is a physical sidelink shared channel PSSCH.

In one possible example, in terms of determining the resource mapping manner of the first sidelink transmission channel according to the first configuration information, the instructions in the program are specifically configured to perform the following operations: acquiring first index information of the first sideline transmission channel; and determining a resource mapping mode of the first sideline transmission channel according to the second corresponding relation and the first index information.

In one possible example, in the aspect of obtaining the first index information of the first sideline transmission channel, the instructions in the program are specifically configured to: receiving a third side row transmission channel, wherein the third side row transmission channel carries the first index information; and acquiring the first index information according to the third side row transmission channel.

In one possible example, in terms of the receiving a third side row transmission channel, the instructions in the program are specifically configured to: receiving a third sideline transmission channel sent by a second terminal, wherein the second terminal is the terminal sending the first sideline transmission channel; or receiving a third side row transmission channel sent by a fourth terminal.

In one possible example, in the aspect of obtaining the first configuration information, the instructions in the program are specifically configured to perform the following operations: receiving a fourth side row transmission channel, wherein the fourth side row transmission channel carries the first configuration information; and acquiring the first configuration information according to the fourth side row transmission channel.

In one possible example, the resource mapping manner includes a first resource mapping manner and/or a second resource mapping manner, where the first resource mapping manner is applicable to a first time domain symbol of a time unit, and the second resource mapping manner is applicable to a last time domain symbol of the time unit.

In one possible example, the resource mapping manner of the first sidelink transmission channel includes at least one of: the first time domain symbol does not map data, and every K resource units on the first time domain symbol map one data, wherein the first time domain symbol is one time domain symbol in a time unit where the first side row transmission channel is located, the resource units on the first time domain symbol are resource units in a frequency domain range of the first side row transmission channel, and K is a positive integer.

The above-mentioned embodiments of the present invention have been introduced mainly from the perspective of interaction between network elements. It is understood that, in order to implement the above functions, the terminal and the network side device include hardware structures and/or software modules for executing the respective functions. Those of skill in the art will readily appreciate that the present invention can be implemented in hardware or a combination of hardware and computer software, with the exemplary elements and algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The terminal and the network side device may be divided according to the above method examples, for example, each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware, or may be implemented in the form of a software program module. It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In case of an integrated unit, fig. 4 shows a block diagram of a possible functional unit of the terminal (also called first terminal) involved in the above embodiments. The terminal 400 includes: a processing unit 402 and a communication unit 403. The processing unit 402 is configured to control and manage actions of the terminal, for example, the processing unit 402 is configured to support the terminal to perform step 201 and 203 in fig. 2A and/or other processes for the technology described herein. The communication unit 403 is used to support communication between the terminal and other devices. The terminal may further include a storage unit 401 for storing program codes and data of the terminal.

The Processing Unit 402 may be a Processor or a controller, such as a Central Processing Unit (CPU), a general-purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others. The communication unit 403 may be a communication interface, a transceiver, a transceiving circuit, etc., and the storage unit 401 may be a memory.

Wherein, the processing unit 402 is configured to obtain first configuration information through the communication unit 403; determining a resource mapping mode of a first sidelink transmission channel according to the first configuration information; and receiving, by the communication unit 403, the first sidelink transmission channel according to the resource mapping manner.

In a possible example, in terms of the determining the resource mapping manner of the first sidelink transmission channel according to the first configuration information, the processing unit 402 is specifically configured to: acquiring a first basic parameter set of the first sideline transmission channel; and determining a resource mapping mode of the first sideline transmission channel according to the first basic parameter set and the first corresponding relation.

In one possible example, in terms of the obtaining the first basic parameter set of the first sideline transmission channel, the processing unit 402 is specifically configured to: acquiring preconfigured information; and acquiring a first basic parameter set of the first sideline transmission channel according to the pre-configuration information.

In one possible example, the preconfiguration information comprises resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; in the aspect of obtaining the first basic parameter set of the first sideline transport channel according to the preconfigured information, the processing unit 402 is specifically configured to: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

In one possible example, in terms of the obtaining, by the communication unit 403, the first basic parameter set of the first sidelink transmission channel, the processing unit 402 is specifically configured to: receiving second configuration information from a network device through the communication unit 403; and acquiring a first basic parameter set of the first sideline transmission channel according to the second configuration information.

In one possible example, the second configuration information includes resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; in the aspect of obtaining the first basic parameter set of the first sideline transmission channel according to the second configuration information, the processing unit 402 is specifically configured to: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

In one possible example, in terms of the obtaining, by the communication unit 403, the first basic parameter set of the first sidelink transmission channel, the processing unit 402 is specifically configured to: receiving, by the communication unit 403, a second sidelink transmission channel, where the second sidelink transmission channel carries third configuration information; and acquiring a first basic parameter set of the first sideline transmission channel according to the third configuration information.

In one possible example, the third configuration information includes resource pool indication information or bandwidth part indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth part; in the aspect of obtaining the first basic parameter set of the first sideline transmission channel according to the third configuration information, the processing unit 402 is specifically configured to: and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

In one possible example, in terms of the receiving, by the communication unit 403, the second sidelink transport channel, the processing unit 402 is specifically configured to: receiving, by the communication unit 403, a second sidelink transmission channel transmitted by a second terminal, where the second terminal is a terminal that transmits the first sidelink transmission channel; alternatively, the second sidelink transmission channel transmitted by the third terminal is received by the communication unit 403.

In a possible example, in terms of the determining the resource mapping manner of the first sidelink transmission channel according to the first configuration information, the processing unit 402 is specifically configured to: acquiring first index information of the first sideline transmission channel; and determining a resource mapping mode of the first sideline transmission channel according to the second corresponding relation and the first index information.

In a possible example, in terms of obtaining, by the communication unit 403, the first index information of the first sidelink transmission channel, the processing unit 402 is specifically configured to: receiving, by the communication unit 403, a third side row transmission channel, where the third side row transmission channel carries the first index information; and acquiring the first index information according to the third side row transmission channel.

In one possible example, in terms of the receiving, by the communication unit 403, the third side row transmission channel, the processing unit 402 is specifically configured to: receiving, by the communication unit 403, a third sidelink transmission channel transmitted by a second terminal, where the second terminal is a terminal that transmits the first sidelink transmission channel; alternatively, the third downlink transmission channel sent by the fourth terminal is received through the communication unit 403.

In a possible example, in terms of the obtaining, by the communication unit 403, the first configuration information, the processing unit 402 is specifically configured to: receiving, by the communication unit 403, a fourth side row transmission channel, where the fourth side row transmission channel carries the first configuration information; and acquiring the first configuration information according to the fourth side row transmission channel.

An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program enables a computer to perform some or all of the steps described in the terminal in the above method embodiment.

An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program causes a computer to perform some or all of the steps described in the foregoing method embodiment by using a network-side device.

Embodiments of the present invention also provide a computer program product, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the terminal in the above method embodiments. The computer program product may be a software installation package.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash Memory, Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), registers, a hard disk, a removable disk, a compact disc Read Only Memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in an access network device, a target network device, or a core network device. Of course, the processor and the storage medium may reside as discrete components in an access network device, a target network device, or a core network device.

Those skilled in the art will appreciate that in one or more of the examples described above, the functionality described in embodiments of the invention may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., 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, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the embodiments of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the embodiments of the present invention.

Claims

1. A resource mapping mode indication method is applied to a first terminal, and the method comprises the following steps:

acquiring first configuration information;

receiving the first sidelink transmission channel according to the resource mapping mode;

wherein the obtaining the first configuration information includes:

receiving a fourth side row transmission channel, wherein the fourth side row transmission channel carries the first configuration information;

and acquiring the first configuration information according to the fourth side row transmission channel.

2. The method of claim 1, wherein the first configuration information comprises first indication information, and the first indication information is used for indicating a resource mapping manner of the first sidelink transport channel.

3. The method according to claim 1, wherein the first configuration information includes a first corresponding relationship, and the first corresponding relationship is a corresponding relationship between at least one basic parameter set and at least one resource mapping manner.

4. The method of claim 3, wherein the determining the resource mapping manner of the first sidelink transmission channel according to the first configuration information comprises:

acquiring a first basic parameter set of the first sideline transmission channel;

and determining a resource mapping mode of the first sideline transmission channel according to the first basic parameter set and the first corresponding relation.

5. The method of claim 4, wherein the first basic parameter set comprises at least one of the following information:

6. The method according to claim 4 or 5, wherein said obtaining a first basic parameter set of said first sideline transmission channel comprises:

acquiring preconfigured information;

and acquiring a first basic parameter set of the first sideline transmission channel according to the pre-configuration information.

7. The method of claim 6, wherein the preconfiguration information comprises second indication information indicating a first basic parameter set of the first sideline transmission channel.

8. The method of claim 6, wherein the preconfigured information comprises resource pool indication information or bandwidth portion indication information, wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth portion; the obtaining a first basic parameter set of the first sidelink transport channel according to the pre-configuration information includes:

and acquiring a first basic parameter set of the first sideline transmission channel according to the resource pool indication information or the bandwidth part indication information.

9. The method according to claim 4 or 5, wherein said obtaining a first basic parameter set of said first sideline transmission channel comprises:

receiving second configuration information from the network device;

and acquiring a first basic parameter set of the first sideline transmission channel according to the second configuration information.

10. The method of claim 9, wherein the second configuration information comprises third indication information indicating a first basic parameter set of the first sidelink transmission channel.

11. The method of claim 9, wherein the second configuration information comprises resource pool indication information or bandwidth portion indication information, and wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth portion; the obtaining a first basic parameter set of the first sideline transmission channel according to the second configuration information includes:

12. The method according to claim 4 or 5, wherein said obtaining a first basic parameter set of said first sideline transmission channel comprises:

receiving a second sidelink transmission channel, wherein the second sidelink transmission channel carries third configuration information;

and acquiring a first basic parameter set of the first sideline transmission channel according to the third configuration information.

13. The method of claim 12, wherein the third configuration information comprises fourth indication information indicating a first basic parameter set of the first sidelink transmission channel.

14. The method of claim 12, wherein the third configuration information comprises resource pool indication information or bandwidth portion indication information, and wherein the first sidelink transmission channel is a sidelink transmission channel transmitted in the resource pool or bandwidth portion; the obtaining a first basic parameter set of the first sideline transmission channel according to the third configuration information includes:

15. The method of claim 12, wherein receiving the second sidelink transmission channel comprises:

receiving a second sidelink transmission channel sent by a second terminal, wherein the second terminal is the terminal sending the first sidelink transmission channel; alternatively, the first and second electrodes may be,

and receiving a second sidelink transmission channel sent by the third terminal.

16. The method of claim 12, wherein the second sidelink transmission channel is a Physical Sidelink Control Channel (PSCCH); or, the second sidelink transport channel is a physical sidelink shared channel PSSCH.

17. The method of claim 1, wherein the first configuration information comprises a second mapping relationship, and the second mapping relationship is a mapping relationship between at least one index information and at least one resource mapping manner.

18. The method of claim 17, wherein the determining the resource mapping manner of the first sidelink transport channel according to the first configuration information comprises:

acquiring first index information of the first sideline transmission channel;

and determining a resource mapping mode of the first sideline transmission channel according to the second corresponding relation and the first index information.

19. The method of claim 18, wherein the first index information is pre-configured or wherein the first index information is network configured.

20. The method of claim 18, wherein obtaining the first index information of the first sidelink DCCH comprises:

receiving a third side row transmission channel, wherein the third side row transmission channel carries the first index information;

and acquiring the first index information according to the third side row transmission channel.

21. The method of claim 20, wherein the receiving a third side row transmission channel comprises:

receiving a third sideline transmission channel sent by a second terminal, wherein the second terminal is the terminal sending the first sideline transmission channel; alternatively, the first and second electrodes may be,

and receiving a third side row transmission channel sent by a fourth terminal.

22. The method according to claim 20 or 21, wherein the third side row transmission channel is a physical side row control channel PSCCH; or, the third side row transport channel is a physical side row shared channel PSSCH.

23. The method of any of claims 1-5, 17-21, wherein the first configuration information is preconfigured or network configured.

24. The method of claim 1, wherein the fourth side row transmission channel is a physical side row control channel (PSCCH); or, the fourth side row transport channel is a physical side row shared channel PSSCH.

25. The method according to any of claims 1-5, 17-21, 24, wherein the first sidelink transmission channel comprises any of: a physical side row control channel PSCCH, a physical side row shared channel PSSCH, a physical side row broadcast channel PSBCH, a physical side row discovery channel PSDCH and a physical side row feedback channel.

26. The method according to any of claims 1-5, 17-21, 24, wherein the resource mapping scheme comprises a first resource mapping scheme and/or a second resource mapping scheme, wherein the first resource mapping scheme is applicable to a first time domain symbol of a time unit, and the second resource mapping scheme is applicable to a last time domain symbol of a time unit.

27. The method according to any of claims 1-5, 17-21, 24, wherein the resource mapping manner of the first sidelink transport channel comprises at least one of: the first time domain symbol does not map data, and every K resource units on the first time domain symbol map one data, wherein the first time domain symbol is one time domain symbol in a time unit where the first side row transmission channel is located, the resource units on the first time domain symbol are resource units in a frequency domain range of the first side row transmission channel, and K is a positive integer.

28. A terminal, characterized in that the terminal is a first terminal comprising a processing unit and a communication unit,

the processing unit is used for acquiring first configuration information through the communication unit; determining a resource mapping mode of a first sidelink transmission channel according to the first configuration information; receiving the first sidelink transmission channel by the communication unit according to the resource mapping mode;

wherein the processing unit is specifically configured to: receiving, by the communication unit, a fourth side-row transmission channel, the fourth side-row transmission channel carrying the first configuration information; and acquiring the first configuration information according to the fourth side row transmission channel.

29. A terminal, characterized in that the terminal is a first terminal, comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method according to any of claims 1-27.

30. A computer-readable storage medium, characterized in that it stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method according to any one of claims 1-27.