WO2023051173A1 - Data transmission method and related apparatus - Google Patents

Abstract

Provided in the present application are a data transmission method and a related apparatus. In the data transmission method, a terminal device can acquire N candidate configurations, wherein each candidate configuration is used for configuring a data transmission parameter, and the N candidate configurations correspond to N pieces of first information on a one-to-one basis, N being a positive integer. In this way, the terminal device can detect first information on a time-frequency resource of each candidate configuration, and receive a PDSCH according to the detected first information and a candidate configuration which corresponds to the first information in the one-to-one correspondence. It can be seen that a data transmission parameter used for PDSCH transmission is configured by the candidate configuration which correspond to the detected first information in the one-to-one correspondence, thereby reducing signaling overheads and improving the flexibility of SPS transmission.

Description

Data transmission method and related device

This application claims the priority of a Chinese patent application with application number 202111166352.0 and application title "Data Transmission Method and Related Devices" filed with the China Patent Office on September 30, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of communications, and in particular to a data transmission method and a related device.

Background technique

With the development of the communication system, the requirements for the delay, reliability and system capacity of the communication system are gradually increasing. For downlink data transmission, there are two main scheduling methods, one is dynamic scheduling and the other is semi-persistent scheduling (SPS). In dynamic scheduling, the network device will indicate a set of data transmission parameters for a data transmission through downlink control information (DCI), and the terminal device can receive or send a data according to a set of data transmission parameters indicated by the DCI. However, each data transmission in dynamic scheduling needs to send a new DCI to indicate data transmission parameters. In SPS, the network device will indicate data transmission every other period through high-level signaling, and the data transmission parameters used for each data transmission can be indicated by an active DCI related to the high-level signaling. In this way, in a fixed period , the terminal device may receive data according to the data transmission parameters indicated by the activated DCI, and stop receiving data until the deactivated DCI is received. It can be seen that in the semi-persistent scheduling, the network device does not need to send a new DCI indicating data transmission parameters for each data transmission.

However, each data transmission in dynamic scheduling requires the DCI to indicate data transmission parameters, resulting in high signaling overhead, especially in the case of a large number of small packet service transmissions, the impact of high signaling overhead is more prominent. In semi-persistent scheduling, although DCI is not required to indicate data transmission parameters for each data transmission, the same data transmission parameters are used for each data transmission during the time from receiving activated DCI to receiving deactivated DCI, which will lead to flexible data transmission. Sex is poor.

Therefore, how to reduce signaling overhead while improving the flexibility of SPS transmission is an urgent problem to be solved.

Contents of the invention

The present application provides a data transmission method and a related device, which can reduce the signaling overhead required for data transmission and improve the flexibility of SPS transmission.

In the first aspect, the present application provides a data transmission method, which can be applied to a terminal device or a module in the terminal device. Taking the terminal device as an example, in this method, the terminal device determines N candidate configurations, and each candidate configuration It is used to configure data transmission parameters. There is a one-to-one correspondence between N candidate configurations and N first information, and N is a positive integer; the terminal device can detect the first information on the time-frequency resource of each candidate configuration; according to the detection Receive a physical downlink shared channel (physical downlink share channel, PDSCH) corresponding to the candidate configuration in the one-to-one correspondence between the received first information and the detected first information, where the PDSCH includes the detected first information.

It can be seen that in this method, the data transmission parameters used for PDSCH transmission are configured by the candidate configurations corresponding to the detected first information in the one-to-one correspondence, and the data transmission parameters used for each PDSCH transmission in dynamic scheduling need one Compared with the way indicated by DCI, it can reduce the signaling overhead required for scheduling data transmission. In addition, the method enables the network device to flexibly adjust the data transmission parameters used in the SPS transmission according to the data transmission parameters respectively configured by the N candidate configurations, thereby enhancing the flexibility of the SPS transmission.

In an optional implementation manner, the N candidate configurations are configured by the first configuration information. In this way, the terminal device can receive the first configuration information from the network device, and determine N candidate configurations from the first configuration information.

In another optional implementation manner, the N candidate configurations are configured through the first configuration information and the second configuration information, wherein the first configuration information is used to configure the offset of the data transmission parameters configured by each candidate configuration , the second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration. In this way, the data transmission parameters configured for each candidate configuration can be obtained according to the offset and reference value of the data transmission parameter corresponding to the candidate configuration.

In yet another optional implementation manner, the N candidate configurations are configured through the first configuration information and the second configuration information, the first configuration information is used to configure P candidate configuration sets, and each candidate configuration set includes multiple Candidate configurations, P is a positive integer; the second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets, and the candidate configuration set includes the aforementioned N candidate configurations. It can be seen that in this embodiment, multiple candidate configuration sets can be configured through the first configuration information, and one of the candidate configurations can be indicated through the second configuration information, which increases the number of candidate configurations while reducing signaling overhead, and improves the efficiency of SPS transmission. flexibility.

In an optional implementation manner, in the above optional implementation manner of determining N candidate configurations, the first configuration information is first SPS configuration information. It can be seen that the first SPS configuration information can configure the N candidate configurations, and the data transmission parameters respectively configured by the N candidate configurations can be used for more choices when transmitting the first PDSCH. The first PDSCH is the first SPS configuration information. PDSCH periodically transmitted in SPS transmission. Therefore, the flexibility of the SPS transmission of the first SPS configuration information is improved.

In an optional implementation manner, in the above optional implementation manner of determining N candidate configurations, the second configuration information is downlink control information.

In an optional implementation manner, in this method, the N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, wherein the N ₁ candidate configurations are configured by the first semi-persistent scheduling SPS configuration information; N _{The two} candidate configurations are configured by the second semi-persistent scheduling SPS configuration information. It can be seen that in this embodiment, the data transmission parameters respectively configured by the N ₁ candidate configurations have more choices when used for the first PDSCH transmission, and the first PDSCH is the PDSCH within the period of the SPS transmission of the first SPS configuration information. The data transmission parameters respectively configured by the N ₂ candidate configurations have more options when used for the second PDSCH transmission, and the second PDSCH is the PDSCH within the period of the SPS transmission of the second SPS configuration information.

In an optional implementation manner, the N ₁ candidate configurations include the first candidate configuration, the N ₂ candidate configurations include the second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in the time domain. It can be seen that in this embodiment, for two or more candidate configurations with overlapping time domains, for overlapping time-frequency resources, the data transmission parameters used for PDSCH transmission are in a one-to-one correspondence according to the detected first information Configured by the corresponding candidate configuration in . Compared with the prior art, for two or more SPS configuration information with overlapping time domain, the terminal device can only select the time-frequency configuration information of the SPS configuration information with the smallest index among the time-frequency resources overlapping in the time domain. The PDSCH is received on the resource. In this embodiment, the data transmission parameters such as the time-frequency resource that the terminal device can receive the PDSCH are more flexible.

In an optional implementation manner, the first candidate configuration and the second candidate configuration do not overlap in the frequency domain.

In an optional implementation manner, the sum of N ₁ and N ₂ is equal to N, and both N ₁ and N ₂ are positive integers.

In an optional implementation manner, the data transmission method further includes: the terminal device sends feedback information, where the feedback information is used to indicate a receiving state of the PDSCH.

In an optional implementation manner, the first information is a demodulation reference signal (demodulation reference signal, DMRS).

In an optional implementation manner, each candidate configuration satisfies the time domain position of the first information on the time domain resource of the candidate configuration is one of the candidate position set.

In the second aspect, the present application also provides a data transmission method, which can be executed by a network device or a module in the network device. In this method, N candidate configurations are configured for the terminal device, and each candidate in the N candidate configurations The configuration is used to configure data transmission parameters. There is a one-to-one correspondence between the N candidate configurations and the N first pieces of information, and N is a positive integer; determine the candidate configuration used for the physical downlink shared channel PDSCH transmission from the N candidate configurations; according to The determined candidate configurations are sent on a PDSCH, and the PDSCH includes first information corresponding to the determined candidate configurations in a one-to-one correspondence.

It can be seen that in this method, the network device can inform the terminal device of the data transmission parameters used for PDSCH transmission through the first information. Compared with the method in which each data transmission in dynamic scheduling requires a DCI indication, it can reduce the time required for scheduling data transmission. Signaling overhead. In addition, the network device can determine a candidate configuration for PDSCH transmission from N candidate configurations, and can flexibly adjust data transmission parameters used for SPS transmission, thereby enhancing the flexibility of SPS transmission.

In an optional implementation manner, the N candidate configurations are configured by the first configuration information.

In another optional implementation manner, the N candidate configurations are configured through the first configuration information and the second configuration information, the first configuration information is used to configure the offset of the data transmission parameters configured by each candidate configuration, and the first The second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration. In this way, it is beneficial for the terminal device to obtain the data transmission parameters configured by each candidate configuration according to the offset and reference value of the data transmission parameters configured by the candidate configuration.

In yet another optional implementation manner, the N candidate configurations are configured through the first configuration information and the second configuration information, the first configuration information is used to configure P candidate configuration sets, and each of the P candidate configuration sets The candidate configuration set includes multiple candidate configurations, and P is a positive integer; the second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets, and a candidate configuration set includes N candidate configurations. It can be seen that in this embodiment, multiple candidate configuration sets can be configured through the first configuration information, and one of the candidate configuration sets can be indicated through the second configuration information, thereby increasing the number of candidate configurations and improving the flexibility of SPS transmission.

In an optional implementation manner, the first configuration information is first semi-static SPS configuration information. It can be seen that the data transmission parameters respectively configured by the N candidate configurations have more options for the transmission of the first PDSCH, which is the PDSCH periodically transmitted in the SPS transmission of the first SPS configuration information. Therefore, the flexibility of SPS transmission configured by the first SPS configuration information is improved.

In an optional implementation manner, the second configuration information is downlink control information.

In an optional implementation manner, the N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, and N ₁ and N ₂ are both positive integers; N ₁ candidate configurations are configured by the first SPS configuration information; The N ₂ candidate configurations are configured by the second SPS configuration information. It can be seen that the data transmission parameters respectively configured by the N ₁ candidate configurations have more choices when used for the first PDSCH transmission, and the first PDSCH is the PDSCH periodically transmitted in the SPS transmission configured by the first SPS configuration information. The data transmission parameters respectively configured by the N2 candidate configurations have more options when used for the second PDSCH transmission, and the second PDSCH is the PDSCH periodically transmitted in the SPS transmission configured by the second SPS configuration information.

In an optional implementation manner, the N ₁ candidate configurations include the first candidate configuration, the N ₂ candidate configurations include the second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in the time domain. It can be seen that in this embodiment, for two or more candidate configurations with overlapping time domains, for the overlapping time-frequency resources, the data transmission parameters used for PDSCH transmission are in one-to-one correspondence according to the detected first information Configured by the corresponding candidate configuration in the relationship. Compared with the prior art, for two or more SPS configuration information overlapping in the time domain, the terminal device can only select the time slot configured by the SPS configuration information with the smallest index among the time-frequency resources overlapping in the time domain. The PDSCH is received on the frequency resource. In this embodiment, the data transmission parameters such as the time-frequency resource that the terminal device can receive the PDSCH are more flexible.

In this implementation manner, optionally, the first candidate configuration and the second candidate configuration do not overlap in the frequency domain.

In an optional implementation manner, the method further includes: receiving feedback information, where the feedback information is used to indicate the receiving state of the sent PDSCH.

In an optional implementation manner, the first information is a demodulation reference signal.

In an optional implementation manner, each candidate configuration satisfies the time domain position of the first information on the time domain resource of the candidate configuration is one of the candidate position set.

In a third aspect, the present application provides a communication device. The communication device may be a terminal device, or a device in the terminal device, or a device that can be matched with the terminal device. Wherein, the communication device may also be a system on a chip. The communication device can execute the method described in the first aspect. The functions of the communication device may be realized by hardware, or may be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module can be software and/or hardware. For operations and beneficial effects performed by the communication device, reference may be made to the method and beneficial effects described in the first aspect above.

In a fourth aspect, the present application provides a communication device. The communication device may be a network device, or a device in the network device, or a device that can be matched with the network device. Wherein, the communication device may also be a system on a chip. The communication device can execute the method described in the second aspect. The functions of the communication device may be realized by hardware, or may be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions. The unit or module can be software and/or hardware. For operations and beneficial effects performed by the communication device, reference may be made to the method and beneficial effects described in the second aspect above.

In a fifth aspect, the present application provides a communication device, the communication device includes a processor and an interface circuit, and the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or The signal from the processor is sent to other communication devices other than the communication device, and the processor implements the method as described in the first aspect or the second aspect through a logic circuit or executing code instructions.

In a sixth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the storage medium, and when the computer program or instruction is executed by a communication device, the implementation of the first aspect or the second aspect can be realized. method.

In a seventh aspect, the present application provides a computer program product including an instruction, and when the communication device reads and executes the instruction, the communication device executes the method as described in the first aspect or the second aspect.

In an eighth aspect, the present application provides a communication system, including at least one communication device for performing the method described in the first aspect above, and at least one communication device for performing the method described in the second aspect above.

Description of drawings

FIG. 1 is a schematic diagram of a scenario of a communication system 100;

FIG. 2 is a schematic diagram of a dynamic scheduling transmission;

Fig. 3 is a schematic diagram of SPS transmission;

Fig. 4 is a schematic diagram of a plurality of SPS configuration information for SPS transmission;

FIG. 5 is a schematic flowchart of a data transmission method 100 provided in an embodiment of the present application;

FIG. 6 is a schematic flowchart of a data transmission method 200 provided in an embodiment of the present application;

Fig. 7 is a schematic diagram 1 of data transmission provided by the embodiment of the present application;

FIG. 8 is a schematic flowchart of a data transmission method 300 provided in an embodiment of the present application;

FIG. 9 is a schematic flowchart of a data transmission method 400 provided in an embodiment of the present application;

Fig. 10 is a second schematic diagram of data transmission provided by the embodiment of the present application;

FIG. 11 is a third schematic diagram of data transmission provided by the embodiment of the present application;

Fig. 12 is a schematic diagram 4 of data transmission provided by the embodiment of the present application;

Fig. 13 is a schematic diagram five of data transmission provided by the embodiment of the present application;

FIG. 14 is a schematic structural diagram of a communication device 1400 provided by an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a communication device 1500 provided by an embodiment of the present application.

Detailed ways

The specific embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

This application can be applied to independent networking, that is, new base stations, backhaul links, core networks and other communication systems deployed in future networks, and can also be applied to various communication systems such as non-independent networking.

For example, the technical solution of the present application can be used in the fifth generation (5th generation, 5G) system, which can also be called the new air interface (new radio, NR) system, or the sixth generation (6th generation, 6G) system, or the seventh generation (7th generation, 7G) system, or other communication systems in the future; or it can also be used in device to device (device to device, D2D) system, machine to machine (machine to machine, M2M) system, long term evolution (long term evolution, LTE) system, carrier aggregation (carrier aggregation, CA) system, dual connectivity technology (Dual Connectivity, DC) system, etc.

For example but not limited to, the data transmission method described in this application can be applied to the communication system as shown in FIG. 1 . FIG. 1 is a schematic diagram of a scenario of a communication system 100 . The communication system 100 may include, but is not limited to: one or more network devices (such as the network device 101 ), and one or more terminal devices (such as the terminal device 102 ). The one or more network devices can schedule the same terminal, provide downlink service for a terminal, or receive uplink service from a terminal. Wherein, the network devices can communicate through the Xn interface.

In the embodiment of the present application, the network device may be a device with a wireless transceiver function or a chip that may be configured on the device, and the network device includes but is not limited to: evolved node B (evolved node B, eNB), wireless network controller ( radio network controller, RNC), node B (Node B, NB), network device controller (base station controller, BSC), network device transceiver station (base transceiver station, BTS), home network equipment (for example, home evolved Node B , or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, WIFI) system access point (access point, AP), wireless relay node, wireless backhaul node, Transceiver node (transmission and reception point, TRP), transmission point (transmission point, TP), etc.; it can also be equipment used in 5G, 6G or even 7G systems, such as gNB in NR system, or transmission point (TRP or TP) , one or a group (including multiple antenna panels) antenna panels of the network equipment in the 5G system, or it can also be a network node that constitutes a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU), or, vehicle to everything (V2X) or road side unit (RSU) in intelligent driving scenarios.

In some deployments, gNB or transmission point may include centralized unit (centralized unit, CU) and DU etc. The gNB or transmission point may also include a radio unit (radio unit, RU). CU implements some functions of gNB or transmission point, DU implements some functions of gNB or transmission point, for example, CU implements radio resource control (radio resource control, RRC), packet data convergence protocol (packet data convergence protocol, PDCP) layer Function, DU implements the functions of radio link control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer. Because the information of the RRC layer will eventually become the information of the physical layer, or be converted from the information of the physical layer, therefore, under this architecture, high-level signaling, such as RRC layer signaling or PHCP layer signaling, can also be It is considered to be sent by DU, or sent by DU+RU. It can be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.

In addition, the CU can be divided into network devices in the radio access network (RAN), that is, access network devices, and the CU can also be divided into network devices in the core network (CN), referred to as the core network. equipment, without limitation.

In the embodiment of the present application, the terminal equipment may include but not limited to: user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile equipment, user terminal , user agent or user device, etc. For another example, the terminal device can be a mobile phone, tablet computer, computer with wireless transceiver function, virtual reality terminal device, augmented reality terminal device, wireless terminal in industrial control, wireless terminal in unmanned driving, wireless terminal in telemedicine , wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in the aforementioned V2X Internet of Vehicles or RSUs of wireless terminal types, etc.

In order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference. "And/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character "/" generally indicates that the contextual objects are an "or" relationship.

First, related concepts involved in this application are described.

1. Data transmission parameters

Data transmission parameters are the parameters needed for data transmission, which can include one of time domain resources, frequency domain resources, modulation and coding scheme (MCS), transport block size (transport block size, TBsize) and code rate, etc. or multiple parameters. Wherein, the time domain resource may be one or more time slots, or may be one or more mini-slots, or may be one or more symbols, or one or more sub-slots (sub-slot), and so on. The frequency domain resource may be one or more subcarriers, or may be one or more resource blocks (resource block, RB), or may be one or more physical resource blocks (physical resource block, PRB), or may be one or more Multiple resource block groups (resource block group, RBG), and so on. For ease of description, time-domain resources and frequency-domain resources are referred to as time-frequency resources for short, and time-frequency resources may include one of time-domain resources and frequency-domain resources, or include both time-domain resources and frequency-domain resources. MCS can be a combination of predefined modulation methods and code rates. Modulation methods include binary phase shift keying (binary phase shift keying, BPSK), quadrature phase shift keying (quadrature phase shift keying, QPSK), 16 quadrature amplitudes Modulation (quadrature amplitude modulation, 16QAM), 64 quadrature amplitude modulation (quadrature amplitude modulation, 64QAM), 1024 quadrature amplitude modulation (quadrature amplitude modulation, 1024QAM) and other methods. The code rate refers to the ratio of the number of original information bits before encoding to the number of bits after encoding, and the value of the code rate is between 0 and 1.

2. Candidate configuration

Candidate configurations are used to configure data transmission parameters, or it can be understood that candidate configurations include specific values of data transmission parameters. A candidate configuration may include a data transmission parameter, or a combination of multiple data transmission parameters. In different candidate configurations, at least one data transmission parameter is different. For example, the data transmission parameters respectively configured by the N candidate configurations are all different, or some parameters of the data transmission parameters respectively configured by the N candidate configurations are the same and some parameters are different. The data transmission parameters may include one or more parameters of time domain resources, frequency domain resources, MCS, TBsize and code rate. Optionally, the N candidate configurations may be but not limited to the following possible implementation manners:

1) N candidate configurations can be: {(time domain resource #1, frequency domain resource #1, MCS#1, code rate #1), ..., (time domain resource #N, frequency domain resource #N, MCS# N, code rate #N)}; or,

2) The N candidate configurations can be: {(frequency domain resource #1, MCS #1, code rate #1), ..., (frequency domain resource #N, MCS #N, code rate #N)}, where The domain resource can be configured in an existing configuration mode such as indicated by DCI; or,

3) The N candidate configurations can be: {(time domain resource #1, MCS #1, code rate #1), ..., (time domain resource #N, MCS #N, code rate #N)}, where frequency The domain resource can be configured in an existing configuration mode such as indicated by DCI; or,

4) The N candidate configurations can be: {(frequency domain resource #1), ..., (frequency domain resource #N)} or {(time domain resource #1), ..., (time domain resource #N)}, where , and other transmission parameters are configured in the existing manner described above, such as DCI indication; or,

5) The N candidate configurations may be: {(MCS#1), ..., (MCS#N)}, where other data transmission parameters such as time-frequency resources are configured using existing methods such as DCI indication.

That is to say, for the data transmission parameters used in PDSCH transmission, the candidate configuration may include all data transmission parameters of PDSCH transmission, or may include a part of data transmission parameters of PDSCH data transmission, when the candidate configuration includes a part of data transmission parameters of PDSCH data transmission , among all the parameters of the PDSCH transmission, the data transmission parameters except the data transmission parameters included in the candidate configuration may be indicated by the network device to the terminal device through signaling. For example, the DCI indicates the data transmission parameters except the data transmission parameters included in the candidate configuration among all the parameters of the PDSCH transmission.

3. First information

The first information can be understood as a kind of information, or as a kind of signal. The first information may be transmitted together with the PDSCH, or the PDSCH may include the first information, or the PDSCH may carry the first information. The first information may have multiple types or forms. Optionally, the first information may be DMRS, and there may be multiple types of DMRS. Take the first information being DMRS, and there are N types of DMRS as an example, where N is a positive integer. The different types of the N DMRSs may be different DMRS sequences, different DMRS frequency patterns (patterns), different DMRS scrambling code identification (identity document, ID), different DMRS positions, or different numbers of symbols occupied by the DMRS. For ease of understanding, the DMRS is described in detail below.

The DMRS may include a front loaded demodulation reference signal (front loaded demodulation reference signal, front loaded DMRS) or an additional demodulation reference signal (additional demodulation reference signal, additional DMRS).

The generation of the DMRS sequence relies on a pseudo-random sequence c(n), which can be generated based on the rules shown below.

First, the initialization seed c _init of the pseudo-random sequence is obtained by using formula (1) based on the configuration parameters of the DMRS:

取值为0或1，

和

为DMRS信号配置的参数中的扰码ID0和扰码ID1，取值为0-65535之间的整数。 in,

The value is 0 or 1,

and

The scrambling code ID0 and the scrambling code ID1 in the parameters configured for the DMRS signal are integers between 0 and 65535.

The method of obtaining the pseudo-random sequence c(n) by using the initialization seed c _init is determined according to the following formula (2).

c(n)=(x ₁ (n+N _C )+x ₂ (n+N _C ))mod 2 (2)

其中： Wherein, mod represents a remainder operation, and N _C =1600. x ₁ (n) and x ₂ (n) are two sequences. Wherein, the initialization of x ₁ (n) is: x ₁ (0)=1, x ₁ (n)=0, n=1,2,...,30; x ₂ (n) is uniquely determined by c _init ,

in:

Furthermore, the DMRS sequence (that is, the value r(n) of the DMRS on each symbol) is generated by two adjacent values of the pseudo-random sequence c(n) using the following formula (3):

Wherein, the correlation between different DMRS sequences is mainly determined by the correlation between pseudo-random sequences generated by different scrambling code IDs.

In one manner, the N DMRSs are explicitly configured, such as configured by high-layer signaling. In another manner, the N DMRSs are implicitly indicated. For example, if N candidate generation parameters are configured in high-level signaling, N DMRSs can be generated by the N candidate generation parameters. For example, the candidate generation parameter may be the above-mentioned scrambling code identifier, etc., and then use the above formula (1) to formula (3) to generate N DMRSs with different DMRS sequences. It should be noted that, in this application, the generation method of the DMRS is not limited, and the generation formula of the DMRS sequence can be the above formula (1) to formula (3), or other formulas or rules, and this application does not limit it .

4. There is a one-to-one correspondence between N candidate configurations and N first pieces of information

In an optional implementation manner, the one-to-one correspondence is explicitly configured.

For example, assuming that the first information is a DMRS, the N DMRSs are denoted as DMRS#1 to DMRS#N respectively. For example, Table 1 is an example of the corresponding relationship between N candidate configurations and the first information. In Table 1, the network device configures N candidate configurations for the terminal device, which are respectively recorded as candidate configuration #1 to candidate configuration #N, where , candidate configuration 1 is used to configure time domain resource #1, frequency domain resource #1 and MCS#1; candidate configuration 2 is used to configure time domain resource #2, frequency domain resource #2 and MCS#2; ...; and so on, Candidate configuration N is used to configure time domain resource #N, frequency domain resource #N and MCS #N. As shown in Table 1, the network device also explicitly configures DMRSs corresponding to the N candidate configurations. It should be noted that the numbering of DMRSs in this application may start from 1 or 0, and this application does not limit the numbering method and starting number of DMRSs.

Table 1

In another optional implementation manner, the one-to-one correspondence is configured implicitly. That is, the first information corresponds to the candidate configuration through a predefined rule. The network device and the terminal device may determine the one-to-one correspondence between the N candidate configurations and the N first pieces of information according to a preset rule. Optionally, the preset rule may be: the index of the candidate configuration and the index of the first information are respectively arranged in order from large to small (or small to large) and then one-to-one correspondence is obtained to obtain N candidate configurations and N The one-to-one correspondence between the first information, optionally, the index of the candidate configuration and the index of the first information can also correspond one-to-one according to the rule that the candidate configuration is from small to large, and the index of the first information is from large to small , this application does not limit the preset rule.

For example, assuming that the first information is DMRS, the N candidate configurations configured by the network device for the terminal device are respectively recorded as candidate configurations #1 to candidate configurations #N, wherein the suffixes #1 to #N of the candidate configurations represent the indexes of the candidate configurations; The N DMRSs configured by the network device for the terminal device are respectively denoted as DMRS #1 to DMRS #N, where the suffixes #1 to #N of the DMRS indicate the index of the DMRS. Assuming that the preset rule is: arrange the indexes of the two in descending order and make a one-to-one correspondence, then the one-to-one correspondence obtained based on the preset rule as shown in Table 2 can be obtained.

Table 2

N DMRS N candidate configurations DMRS#1 Candidate configuration 1 DMRS#2 Candidate configuration 2 … … DMRS#N Candidate configuration 2

In another way, the network device determines N pieces of first information by configuring N candidate generation parameters for the terminal device. In this way, the terminal device can determine the difference between the N candidate configurations and the N candidate generation parameters according to preset rules. The one-to-one correspondence between the N candidate configurations and the N first pieces of information is obtained.

For example, assuming that the first information is DMRS, the N candidate generation parameters configured by the network device for the terminal device are respectively recorded as candidate generation parameters #1 to candidate generation parameters #N, wherein the suffixes #1 to #N of the candidate generation parameters represent candidate Indexes of parameters are generated; N candidate configurations configured by the network device for the terminal device are respectively recorded as candidate configurations #1 to candidate configurations #N, wherein the suffixes #1 to #N of the candidate configurations represent the indexes of the candidate configurations. For example, Table 3 is an example of obtaining a one-to-one correspondence based on preset rules. Suppose the preset rule is: the indexes of N candidate configurations are arranged in descending order and the indexes of N candidate generation parameters are arranged in ascending order. Correspondingly, then, the one-to-one correspondence between N candidate configurations and N candidate generation parameters as shown in the left two columns of Table 3 can be obtained; furthermore, DMRS#1 generated based on candidate generation parameter #1, ..., Based on the DMRS #N generated by the candidate generation parameter #N, etc., the one-to-one correspondence between N candidate configurations and N DMRSs shown in the two columns on the right of Table 3 can be obtained.

table 3

N candidate generation parameters N candidate configurations N DMRS Candidate Generation Parameter #1 Candidate configuration #N DMRS#1 Candidate Generation Parameter #2 Candidate configuration #N-1 DMRS#2 … … … Candidate generation parameters #N Candidate configuration 1 DMRS#N

5. SPS configuration information

The SPS configuration information may be an SPS-configuration (config) field in high-level signaling such as RRC signaling, which may be referred to as SPS configuration for short. The network device may send an activation DCI to the terminal device, and the activation DCI may carry an index of the SPS configuration, so as to inform the terminal device of the SPS configuration used for SPS transmission. In the SPS transmission, the network device can periodically send the PDSCH according to the cycle configured by the SPS configuration, and correspondingly, the terminal device can periodically receive the PDSCH.

The SPS transmission does not require the network device to send a DCI every time before transmitting the PDSCH. Wherein, different SPS configurations carry different indexes. Optionally, the terminal device may receive multiple activation DCIs, and the multiple activation DCIs may respectively carry indexes of different SPS configurations, so that the terminal device may perform SPS transmission configured by multiple SPS configurations respectively. Wherein, periods for configuring different SPS configurations may be the same or different, which is not limited in this application.

In dynamic scheduling, before each PDSCH transmission, the network device needs to send a DCI to indicate the data transmission parameters used for PDSCH transmission. Please refer to FIG. 2 , which is a schematic diagram of a dynamic scheduling transmission. Figure 2 takes enhanced Mobile Broadband (eMBB) services and ultra-reliable and low latency communications (Ultra-reliable and low latency communications, URLLC) services as examples. As shown in Figure 2, in the dynamic scheduling mode, eMBB services PDSCH (PDSCH eMBB for short) and PDSCH for URLLC service (PDSCH URLLC for short) both require a separate DCI to indicate data transmission parameters. It can be seen that the signaling overhead of dynamic scheduling is too large.

Since SPS transmission can periodically transmit PDSCH, the data transmission parameters of this PDSCH are a set of data transmission parameters configured by SPS configuration, or a set of data transmission parameters indicated by activating DCI, so as shown in Figure 3, Figure 3 is a set of data transmission parameters A schematic diagram of SPS transmission, assuming that the SPS configuration is recorded as SPS0, and the period of the SPS0 configuration is T, so that the network device can periodically transmit the PDSCH at a period T, and correspondingly, the terminal device can periodically transmit the PDSCH according to the SPS configuration indicated by the DCI. Receive PDSCH. It can be seen that the data transmission parameters such as the time-frequency resource of the periodically transmitted PDSCH are unchanged, which leads to poor flexibility of SPS transmission.

If the SPS transmissions configured by two or more SPS configurations overlap in the time domain, the network device can only send PDSCH on the time domain resources configured by the SPS configuration with the smallest index on the overlapping time domain resources. . For example, FIG. 4 is a schematic diagram of a plurality of SPS configuration information for SPS transmission, assuming that the plurality of SPS configuration information includes first SPS configuration information and second SPS configuration information, wherein the first SPS configuration information is the SPS with index 0 The configuration information is recorded as SPS 0; the second SPS configuration information is the SPS configuration information whose index is 1, which is recorded as SPS 1; assuming that SPS 0 and SPS 1 have overlapping positions as shown in Figure 4 in the time domain, in the overlapping In terms of time-domain resources, network devices can only use the smallest index, that is, SPS 0 for SPS transmission. Then, if there is a data to be transmitted, the required resource is between the resource size of SPS 0 and the resource size of SPS1, it will be As a result, the data to be transmitted cannot be transmitted. Therefore, the flexibility of SPS transmission is poor.

The present application provides a data transmission method. The data transmission parameters used in PDSCH transmission are configured by the candidate configuration corresponding to the detected first information in the one-to-one correspondence, that is, the data transmission parameters used in PDSCH transmission can be based on the first The information detected and obtained can reduce the signaling overhead required for data transmission, compared with the method in which the data transmission parameters used for each PDSCH transmission in dynamic scheduling need to be indicated by a DCI. Moreover, the method is beneficial for the network equipment to flexibly select the data transmission parameters used for PDSCH transmission from the data transmission parameters respectively configured by N candidate configurations, so that the data transmission parameters used for SPS transmission can be flexibly adjusted, thereby enhancing the flexibility of SPS transmission sex.

The data transmission method provided by the present application will be described below with reference to the accompanying drawings.

Please refer to FIG. 5 , which is a schematic flowchart of a data transmission method 100 provided in an embodiment of the present application. The data transmission method 100 is described from the perspective of terminal equipment. As shown in FIG. 5, the data transmission method 100 may include but not limited to the following steps:

S101. The terminal device determines N candidate configurations, each candidate configuration is used to configure data transmission parameters; there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information, and N is a positive integer;

In an optional implementation manner, the N candidate configurations are predefined, and the terminal device may know the N candidate configurations in advance. In another optional implementation manner, the N candidate configurations are configured by the first configuration information. In this embodiment, the terminal device receives the first configuration information, and then acquires the N candidate configurations from the first configuration information. In yet another optional implementation manner, the N candidate configurations are configured through the first configuration information and the second configuration information. In this embodiment, the terminal device may receive the first configuration information and the second configuration information, and determine the N candidate configurations according to the first configuration information and the second configuration information. Wherein, the data transmission parameters configured by the candidate configuration can be used for PDSCH transmission, and as mentioned above, the PDSCH can carry the first information. Optionally, the first configuration information may be SPS configuration information, and the second configuration information may be DCI.

In yet another optional implementation manner, the N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, wherein the N ₁ candidate configurations are configured by the first SPS configuration information, such as the first SPS configuration The information includes the N ₁ candidate configurations; the N ₂ candidate configurations are configured in the second SPS configuration information, for example, the second SPS configuration information includes the N ₂ candidate configurations. Wherein, the first SPS configuration information and the second SPS configuration information may have different indexes.

S102. The terminal device respectively detects the first information on the time-frequency resources of each candidate configuration;

S103. The terminal device receives the physical downlink shared channel PDSCH according to the detected first information and the candidate configuration corresponding to the detected first information in a one-to-one correspondence, where the PDSCH includes the detected first information.

Detecting the candidate configuration corresponding to the first information in the one-to-one correspondence can be used to determine the data transmission parameters used for PDSCH transmission, so as to receive the PDSCH.

It can be seen that in the data transmission method 100, the data transmission parameters used for PDSCH transmission are configured by the candidate configuration corresponding to the detected first information in a one-to-one correspondence, and are different from the data transmission parameters used for each PDSCH transmission in dynamic scheduling. Compared with the way of requiring a DCI indication, the signaling overhead required for scheduling data transmission can be reduced. In addition, the method enables the network device to flexibly adjust the data transmission parameters used in the SPS transmission according to the data transmission parameters respectively configured by the N candidate configurations, thereby enhancing the flexibility of the SPS transmission.

Please refer to FIG. 6. FIG. 6 is a schematic flow diagram of a data transmission method 200 provided by an embodiment of the present application. The data transmission method 200 is described from the perspective of a network device. As shown in FIG. 6, the data transmission method 200 Including but not limited to the following steps:

S201. The network device configures N candidate configurations for the terminal device. Each candidate configuration in the N candidate configurations is used to configure data transmission parameters. There is a one-to-one correspondence between the N candidate configurations and the N first pieces of information, and N is positive integer.

In an optional implementation manner, the N candidate configurations are predefined, and the network device and the terminal device may predefine the N candidate configurations. In another optional implementation manner, the N candidate configurations are configured by the first configuration information. In this implementation manner, the network device may send the first configuration information, so that the terminal device acquires the N candidate configurations from the first configuration information. In yet another optional implementation manner, the N candidate configurations are configured through the first configuration information and the second configuration information. In this embodiment, the network device may send the first configuration information and the second configuration information, so that the terminal device may determine the N candidate configurations according to the first configuration information and the second configuration information.

S202. The network device determines a candidate configuration used for PDSCH transmission from N candidate configurations;

For each candidate configuration, the network device may transmit a PDSCH on the time-frequency resource of the candidate configuration, and the PDSCH is transmitted based on the data transmission parameters configured in the candidate configuration, and the PDSCH carries the first information. Optionally, the time-frequency resources of different candidate configurations may be the same or different, and the network device may flexibly select the candidate configuration used for PDSCH transmission according to the channel state information and/or the size of service data.

S203. The network device sends a PDSCH according to the determined candidate configuration, where the PDSCH includes first information corresponding to the determined candidate configuration in a one-to-one correspondence.

It can be seen that in the data transmission method 200, the candidate configuration used for PDSCH transmission can be notified to the terminal device through the first information. Compared with the method in which the data transmission parameters used for each PDSCH transmission in dynamic scheduling need a DCI indication, the scheduling can be reduced. Signaling overhead required for data transfer. In addition, in this method, the network device flexibly determines the candidate configuration used for PDSCH transmission from N candidate configurations, which can enhance the flexibility of SPS transmission.

For example, assume that the terminal device determines that the four candidate configurations (denoted as candidate configuration 0 to candidate configuration 3) have a one-to-one correspondence with the four DMRSs (denoted as DMRS0 to DMRS3): candidate configuration 0 corresponds to DMRS0, and candidate configuration 1 corresponds to DMRS1 corresponds, candidate configuration 2 corresponds to DMRS2, and candidate configuration 3 corresponds to DMRS3. The time-frequency resources of the candidate configuration 0 are the same as the time-frequency resources of the candidate configuration 1; the time-frequency resources of the candidate configuration 2 are the same as the time-frequency resources of the candidate configuration 3. In addition, the time-frequency resource of candidate configuration 0 is different from the time-frequency resource of candidate configuration 2 . As shown in Figure 7, the network device sequentially adopts the data transmission parameters configured from candidate configuration 0 to candidate configuration 3 to perform SPS transmission, then, the first PDSCH carries DMRS0, the second PDSCH carries DMRS1, and the third PDSCH carries DMRS2. The fourth PDSCH carries DMRS3, so that the terminal device detects DMRS on the time-frequency resource of each candidate configuration, for example, detects DMRS0 at the time-frequency position of candidate configuration 0; according to the one-to-one correspondence between the DMRS0 and the DMRS0 The corresponding candidate configuration receives the first PDSCH; similarly, the terminal device receives the remaining three PDSCHs sequentially in the same manner. It can be seen that the data transmission parameters in the SPS transmission can be flexibly adjusted, thus enhancing the flexibility of the SPS transmission.

In the following, several optional implementations of how the network device configures the N candidate configurations for the terminal device and how the terminal device determines the N candidate configurations are further carried out on the data transmission method in the way of interaction between the network device and the terminal device. elaboration.

Manner 1: N candidate configurations are configured by the first configuration information.

Please refer to FIG. 8. FIG. 8 is a schematic flowchart of a data transmission method 300 provided by an embodiment of the present application. In the data transmission method 300, a terminal device can directly obtain N candidate configurations from the first configuration information. Optionally, the first configuration information is SPS configuration information. For ease of description, the first configuration information is referred to as first SPS configuration information for short. Specifically, the data transmission method 300 includes but is not limited to the following steps:

S301. The network device sends first SPS configuration information, and correspondingly, the terminal device receives the first SPS configuration information;

The first SPS configuration information may include N candidate configurations.

S302. The terminal device determines N candidate configurations from the first SPS configuration information, and there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information;

S303. The network device determines a candidate configuration used for PDSCH transmission from N candidate configurations;

S304. The network device sends a PDSCH according to the determined candidate configuration, where the PDSCH includes first information corresponding to the determined candidate configuration in a one-to-one correspondence;

S305. The terminal device detects the first information on the time-frequency resource of each candidate configuration;

S306. The terminal device receives the PDSCH according to the detected first information and the candidate configuration corresponding to the detected first information in a one-to-one correspondence.

Wherein, for relevant descriptions of steps S303 to S306, reference may be made to relevant descriptions in the above-mentioned data transmission method 100 and data transmission method 200, and will not be described in detail here.

In the data transmission method 300, the network device can flexibly select a candidate configuration for PDSCH transmission from N candidate configurations, and the terminal device can receive the PDSCH based on the detected first information and the corresponding candidate configuration by detecting the first information, without As in dynamic scheduling, data transmission parameters are obtained through DCI, therefore, the data transmission method 300 can reduce signaling overhead and enhance the flexibility of SPS transmission configured by the first SPS configuration information.

Mode 2: N candidate configurations are configured through the first configuration information and the second configuration information. The first configuration information is used to configure an offset of the data transmission parameter configured by each candidate configuration, and the second configuration information is used to configure a reference value of the data transmission parameter configured by each candidate configuration. In this way, the data transmission parameters configured for each candidate configuration can be obtained according to the offset and reference value of the data transmission parameter corresponding to the candidate configuration. Optionally, the first configuration information is first SPS configuration information, and the second configuration information may be downlink control information DCI. For convenience of description, the second configuration information is referred to as first DCI for short.

Please refer to FIG. 9 , which is a schematic flow chart of a data transmission method 400 provided by an embodiment of the present application. In this data transmission method 400, the network device configures the offset and reference values of data transmission parameters for the terminal device, and the terminal device can The offset and reference value of the transmission parameter determine N candidate configurations. Specifically, the data transmission method 400 may include but not limited to the following steps:

Step S401, the network device sends the first SPS configuration information, correspondingly, the terminal device receives the first SPS configuration information, and the first SPS configuration information is used to configure the offsets of the data transmission parameters respectively configured by the N candidate configurations;

S402. The network device sends the first DCI, and correspondingly, the terminal device receives the first DCI, and the first DCI is used to configure reference values of data transmission parameters respectively configured by the N candidate configurations;

S403. The terminal device determines N candidate configurations according to respectively configured data transmission parameter offsets and reference values.

Furthermore, in the data transmission method 400, the network device can execute S404 and S405 corresponding to the steps S303 and S304 in the above data transmission method 300; correspondingly, the terminal device can execute the corresponding steps S305 and S306 in the above data transmission method 300 S406, S407, which will not be described in detail here.

It should be noted that the first DCI may indicate N reference values of the N candidate configurations, or may indicate a common reference value of the N candidate configurations.

Taking the first DCI indicating a common reference value as an example, assuming that the data transmission parameters configured by the candidate configuration only include MCS, that is, the candidate configuration is MCS, the first SPS configuration information includes 5 offsets of 5 MCS, and the first DCI Indicates 1 reference value MCS X. The five offsets are: (-2, -1, 0, 1, 2), then, the MCS configured by the five candidate configurations are: MCS X-2, MCS X-1, MCS X, MCS X+1 , MCS X+2, when X is 5, the MCS configured for each candidate configuration is: MCS 3, MCS 4, MCS5, MCS 6, MCS 7. This example is described by taking the data transmission parameter configured by the candidate configuration as MCS as an example. For the case where the data transmission parameter used for indication in the candidate configuration includes one or more of time domain resources, frequency domain resources, and code rates, the same The example of MCS is similar and will not be described in detail here.

Mode 3: N candidate configurations are configured through the first configuration information and the second configuration information. The first configuration information is used to configure P candidate configuration sets, and each candidate configuration set includes multiple candidate configurations, and P is a positive integer; the second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets. In this way, the network device can be configured with more candidate configurations, which improves the flexibility of the SPS.

In the data transmission method 500 combined with the third method, the network device can configure more candidate configurations for the terminal device, and indicate that the candidate configurations in one of the candidate configuration sets correspond to the N pieces of first information one-to-one. Specifically, the difference between the data transmission method 500 and the data transmission method 400 is that in the data transmission method 500, the first SPS configuration information in 401 is used to configure P candidate configuration sets, and the first DCI is used to indicate one of A set of candidate configurations; furthermore, the terminal device determines N candidate configurations from the indicated set of candidate configurations. Other steps in the data transmission method 500 correspond to steps S303 to S306 in the data transmission method 300 above, and will not be described in detail here.

For example, assuming that the candidate configuration is MCS, the first SPS configuration information includes P MCS sets, which are {(MCS 1-1, MCS 1-2..., MCS 1-N), (MCS 2-1, MCS 2-2 ..., MCS 2-N), ..., (MCS P-1, MCS P-2..., MCS P-N)}; the second DCI includes the index x of the MCS set, then, one of the MCS sets indicated is: (MCS x -1, MCS x-2..., MCS x-N), each MCS has a one-to-one correspondence with a DMRS. Suppose P is equal to 4, the 4 MCS sets are shown in Table 4, N is equal to 3, that is, each MCS set includes 3 MCSs, and the first DCI includes index 2 of MCS set 2, then, 3 MCS sets in MCS set 2 The MCS has a one-to-one correspondence with the three DMRSs. Optionally, the index of the MCS set included in the first DCI may be located in the MCS field in the first DCI. This example is described by taking the data transmission parameter as MCS as an example. For the case where the data transmission parameter includes one or more of time domain resources, frequency domain resources and code rate, it is similar to the description of MCS in this example, and will not be repeated here. Give an example.

Table 4

MCS Collection 1 MCS 1-1 MCS 1-2 MCS 1-3 MCS Collection 2 MCS 2-1 MCS 2-2 MCS 2-3 MCS Collection 3 MCS 3-1 MCS 3-2 MCS 3-3 MCS Collection 4 MCS 4-1 MCS 4-2 MCS 4-3

There is another possibility of this method, each of the P candidate configuration sets has a one-to-one correspondence with the first information, that is, each candidate configuration in each candidate configuration set has a corresponding first information information, which is different from the manner in which only the candidate configurations in the indicated candidate configuration set have corresponding first information. That is to say, in addition to the P candidate configuration sets configured in the first SPS configuration information, a one-to-one correspondence between each candidate configuration and the first information is also configured.

For example, the first SPS configuration information includes 4 candidate configuration sets as shown in Table 4, and each set contains three MCSs, then the 12 MCSs shown in Table 4 have a one-to-one correspondence with the 12 first pieces of information respectively In this way, the first DCI indicates the candidate configuration set 2, then the three MCSs in the candidate configuration set 2 are used as SPS to transmit optional MCSs, and the terminal device can detect the first information corresponding to the three MCSs. It can be seen that, in this example, the network device needs to configure 12 pieces of first information for the terminal device, but in the previous example, the network device only needs to configure 3 MCSs for the terminal device.

Mode 4: N candidate configurations are configured through the first configuration information and the second configuration information. The first configuration information is used to configure N candidate configuration tables, and each candidate configuration table includes one or more candidate configurations; the second configuration information is used to indicate an index value y, and the N candidate configurations are composed of N candidate configurations Candidate configuration composition for index y in the table.

In connection with the data transmission method 600 in the fourth manner, the network device may configure more candidate configurations for the terminal device, and indicate that some of the candidate configurations correspond to the N pieces of first information one-to-one. Specifically, the difference between the data transmission method 600 and the data transmission method 300 is that in the data transmission method 600, the first SPS configuration information is used to configure N candidate configuration tables, and the first DCI is used to indicate an index value y ; Furthermore, the terminal device selects a candidate configuration with an index y from the N candidate configuration tables to form N candidate configurations. Other steps in the data transmission method 600 correspond to steps S303 to S306 in the data transmission method 300 above, and will not be described in detail here.

For example, assuming that the candidate configurations are MCSs, each candidate configuration table includes X MCSs. The three candidate configuration tables for the configuration of the first SPS configuration information, such as Table 5-1, Table 5-2 to Table 5-3 shown in Table 5, are respectively: {(MCS 1-1, MCS 1-2..., MCS 1-X), (MCS 2-1, MCS 2-2, ..., MCS 2-X) ..., (MCS 3-1, MCS 3-2, ..., MCS 3-X}; indicated by the first DCI An index value y is equal to 2, then the three MCSs determined by the terminal equipment are the MCSs whose index is 2 in Table 5-1 to Table 5-3 in Table 5: MCS 1-3, MCS 2-3, MCS 3 -3, and the three MCSs have a one-to-one relationship with the three first pieces of information. This example is set forth as an example of the candidate configuration as the MCS, and the candidate configuration includes time domain resources, frequency domain resources and code rate One or more cases are similar to the elaboration of this example, and will not be described in detail here.

table 5

Index Table 5-1 Table 5-2 Table 5-3 0 MCS 1-1 MCS 2-1 MCS 3-1 1 MCS 1-2 MCS 2-2 MCS 3-2 2 MCS 1-3 MCS 2-3 MCS 3-3 3 MCS 1-4 MCS 2-4 MCS 3-4 4 MCS 1-5 MCS 2-5 MCS 3-5 ... … … … N-1 MCS 1-X MCS 2-X MCS 3-X

Mode 5: N candidate configurations are jointly configured by multiple SPS configuration information, and each SPS configuration information is used to configure a part of the N candidate configurations. For example, N candidate configurations are configured by K SPS configuration information, and K SPS configuration information includes K ₁ SPS configuration information, K ₂ SPS configuration information, K ₃ SPS configuration information, ... K _K SPS configuration information, which are used to configure N ₁ candidate configurations, N ₂ candidate configurations, N ₃ candidate configurations, ... N _k candidate configurations. Wherein, N ₁ +N ₂ +N ₃ +...+N _K =N, K ₁ , K ₂ , K ₃ ,..., K _K may be indexes or identifiers corresponding to SPS configuration information.

When K is equal to 2, N candidate configurations are configured by two SPS configuration information, and the two SPS configuration information includes first SPS configuration information and second SPS configuration information, and the first SPS configuration information is used to configure N ₁ candidate configurations, The second SPS configuration information is used to configure N ₂ candidate configurations, and the sum of N ₁ and N ₂ is N. At this time, the data transmission parameters configured by the N ₁ candidate configurations can be used for more choices when the first PDSCH is transmitted, and the first PDSCH is the PDSCH periodically transmitted in the SPS transmission of the first SPS configuration information; N ₂ candidates There are more options when configuring the separately configured data transmission parameters for the transmission of the second PDSCH, where the second PDSCH is the PDSCH periodically transmitted in the SPS transmission of the second SPS configuration information.

In this application, in addition to the manner in which the N candidate configurations are jointly configured by multiple pieces of SPS configuration information, in another possible implementation manner, the N candidate configurations may also be jointly configured by multiple pieces of SPS configuration information and multiple DCIs. For example, N candidate configurations are jointly configured by K SPS configuration information and K DCIs, and K SPS configuration information includes K ₁ SPS configuration information, K ₂ SPS configuration information, K ₃ SPS configuration information, ..., K _K SPS configuration information , K DCIs include K ₁ DCI, K ₂ DCI, K ₃ DCI, ..., K _K DCI. Among them, N ₁ candidate configurations are configured by K ₁ SPS configuration information and K ₁ DCI, N ₂ candidate configurations are configured by K ₂ SPS configuration information and K ₂ DCI, and N ₃ candidate configurations are configured by K ₃ SPS Configuration information and K ₃ DCI configurations, ..., N _K candidate configurations are configured by K _K SPS configuration information and K _K DCI. Wherein, N ₁ +N ₂ +N ₃ +...+N _K =N, K ₁ , K ₂ , K ₃ ,..., K _K may be indexes or identifiers corresponding to SPS configuration information or DCI. Among them, how the N _k candidate configurations are configured by K _k SPS configuration information and K _k DCI may be implemented (k is any value from the above-mentioned 1 to K), and can refer to the above-mentioned methods 2 to 4. Relevant content will not be described in detail here. Among them, in a possible embodiment of how the N _k candidate configurations are configured by the K _k SPS configuration information and the K _k DCI, the K _k DCI can also be used to activate the K _k SPS configuration information to inform the terminal device to use the K _k SPS configuration The information is transmitted by SPS.

Taking K equal to 2 as an example, the N candidate configurations are configured by two SPS configuration information, the two SPS configuration information includes the first SPS configuration information and the second SPS configuration information, and the two DCIs include the first DCI and the second DCI, and the second One piece of SPS configuration information and the first DCI are used to configure N ₁ candidate configurations, the second SPS configuration information and the second DCI are used to configure N ₂ candidate configurations, and the sum of N ₁ and N ₂ is N. Wherein, regarding how the N ₁ candidate configurations are configured in this embodiment, as described in the second method, the first SPS configuration information is used to configure the offset of the data transmission parameters configured by the N ₁ candidate configurations, and the first The DCI is used to configure a reference value of a data transmission parameter, and the terminal device can determine N ₁ candidate configurations according to the configured offset and reference value. As described in the third way, the first SPS configuration information is used to configure P candidate configuration sets, the first DCI is used to indicate one of the candidate configuration sets, and the terminal device can determine N ₁ candidate configurations according to the indicated candidate configuration sets. As described in method 4, the first SPS configuration information is used to configure N ₁ candidate configuration tables, and each candidate configuration table includes one or more candidate configurations; the first DCI is used to indicate an index value y, and N ₁ candidate configuration tables A configuration is composed of candidate configurations with index y in the _N1 candidate configuration table. Similarly, in this example, how the N ₂ candidate configurations are configured by the second SPS configuration information and the second DCI can refer to the relevant content described in the above-mentioned method 2 to method 4, and will not be described in detail here.

For the convenience of explanation, the N _k candidate configurations are configured by K _k SPS configuration information, or K _k SPS configuration information and K _k DCI configuration, briefly described as N _k candidate configurations are associated with K _k SPS configuration information, that is, the The N _k candidate configurations are more options for the periodic transmission of the PDSCH in the SPS transmission configured by the K _k SPS configuration information.

Optionally, a candidate configuration among the N _k candidate configurations overlaps with a candidate configuration among the N _m candidate configurations in the time domain, or, a candidate configuration among the N _k candidate configurations overlaps with a candidate configuration among the N _m candidate configurations A candidate configuration for is overlapping in the time domain but not in the frequency domain. Wherein, k and m are one of values from 1 to K respectively, that is, candidate configurations associated with different SPS configuration information overlap in the time domain, or overlap in the time domain but do not overlap in the frequency domain.

Taking K equal to 2 as an example, N ₁ candidate configurations include the first candidate configuration, N ₂ candidate configurations include the second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in time domain. Alternatively, the first candidate configuration overlaps with the second candidate configuration in the time domain but not in the frequency domain.

It can be seen that there are multiple SPS configuration information in this mode. For network equipment, one or more SPS configuration information can be used for SPS transmission according to channel conditions and/or service data arrival conditions; for terminal equipment, it can be By detecting the first information, the data transmission parameters and the SPS configuration information are obtained by using the candidate configurations corresponding to the detected first information in a one-to-one correspondence. Compared with the prior art, for two or more SPS configuration information with overlapping time domains, the terminal device can only receive on the time domain resources configured by the SPS configuration information with the smallest index on the overlapping time domain resources PDSCH, in this way, the time-frequency resources and data transmission parameters of PDSCH can be sent more flexibly. For example, for the overlapping situation of the SPS transmission in the time domain of the allocation and configuration of SPS 0 and SPS 1 shown in Figure 4, assuming that SPS 0 is associated with candidate configuration 0 and SPS 1 is associated with candidate configuration 1, the data transmission method described in this application is adopted. , on overlapping time-domain resources, the network device can use any one of candidate configuration 0 associated with SPS 0 and candidate configuration 1 associated with SPS 1 for SPS transmission. Correspondingly, the terminal device can receive the PDSCH through the candidate configuration corresponding to the detected DMRS. Then, at the overlapping position shown in Figure 4, the transmission example shown in Figure 10 can be obtained, that is, at the first overlapping position, the PDSCH can be selected to be transmitted on the candidate configuration 0 associated with SPS 0, and at the second overlapping position Overlapping position, optional transmission of PDSCH on candidate configuration 1 associated with SPS 1. Correspondingly, if there is data to be transmitted and the required resource is between the time-frequency resource size of candidate configuration 0 and the resource size of candidate configuration 1, then the network device may select candidate configuration 1 to transmit the data. Thus, the flexibility of SPS transmission is enhanced.

For another example, assuming that candidate configuration 0 and candidate configuration 1 overlap in the time domain as shown in Figure 11, the network device can flexibly adjust the candidate configuration used for SPS transmission, as shown in Figure 11, and can be configured in Figure 11 At overlapping positions, candidate configuration 0, candidate configuration 1, candidate configuration 1, and candidate configuration 0 are used in sequence to transmit the PDSCH. Correspondingly, the terminal device can detect DMRS0 and DMRS1 respectively to determine which candidate configuration or SPS configuration information is used for current transmission, which enhances the flexibility of SPS transmission.

For another example, assuming that N is equal to 3 and K is equal to 2, the first SPS configuration information is the SPS configuration information with an index of 0, denoted as SPS 0; the second SPS configuration information is the SPS configuration information with an index of 1, denoted as SPS 1; Among them, N ₁ is equal to 2, that is, SPS 0 is associated with candidate configuration 0 and candidate configuration 1; N ₂ is equal to 1, that is, SPS 1 is associated with candidate configuration 2; candidate configuration 0 corresponds to DMRS 0, and candidate configuration 1 corresponds to DMRS 1. Candidate configuration 2 corresponds to DMRS2. Assuming that SPS 0 and SPS 1 overlap in the time domain as shown in Figure 12, the network device can not only choose between SPS 0 and SPS 1, but also choose between candidate configuration 0 and candidate configuration 1 associated with SPS 0 choose between. As shown in Figure 12, assuming that the network device sequentially uses the candidate configuration 0 associated with SPS 0, the candidate configuration 2 associated with SPS 1, the candidate configuration 2 associated with SPS 1, and the candidate configuration 1 associated with SPS 0 to transmit PDSCH, then, among these PDSCH The corresponding DMRSs are also included in sequence: DMRS0, DMRS2, DMRS2, and DMRS1. Correspondingly, the terminal device can detect DMRS0 in sequence, and receive PDSCH according to DMRS0 and candidate configuration 0 corresponding to DMRS0; detect DMRS2, and receive PDSCH according to candidate configuration 2 corresponding to DMRS2 and DMRS2; detect DMRS2, and receive PDSCH according to DMRS2 and candidate configuration 2 corresponding to DMRS2, receiving PDSCH; detecting DMRS1, and receiving PDSCH according to DMRS1 and candidate configuration 1 corresponding to DMRS1.

For another example, assume that N2 is also equal to 2, that is, SPS1 is associated with two candidate configurations, which are candidate configuration 2 and candidate configuration 3. Among them, candidate configuration 2 still corresponds to DMRS2, and candidate configuration 3 corresponds to DMRS3. Suppose SPS 0 and SPS 1 In the time domain, there is an overlapping position as shown in Figure 13, so the network device can not only choose between SPS 0 and SPS 1, but also choose between two candidate configurations associated with SPS 0 or SPS 1 , as shown in Figure 13, assuming that the network device sequentially uses candidate configuration 0 associated with SPS 0, candidate configuration 2 associated with SPS 1, candidate configuration 3 associated with SPS 1, and candidate configuration 1 associated with SPS0 to transmit PDSCH, then, among these PDSCH The corresponding DMRSs are also included in sequence: DMRS0, DMRS2, DMRS3, and DMRS1. Correspondingly, the terminal device can detect DMRS0 sequentially, and receive PDSCH according to DMRS0 and candidate configuration 0 corresponding to DMRS0; detect DMRS2, and receive PDSCH according to candidate configuration 2 corresponding to DMRS2 and DMRS2; detect DMRS2, and receive PDSCH according to DMRS3 and candidate configuration 3 corresponding to DMRS3, receiving PDSCH; detecting DMRS1, and receiving PDSCH according to DMRS1 and candidate configuration 1 corresponding to DMRS1.

In addition, in the data transmission method described in the fifth method, if the N candidate configurations are respectively used for the SPS transmission configured by the N SPS configuration information, that is, the N candidate configurations correspond to the N SPS configuration information one-to-one, then, N The N DMRSs corresponding to the candidate configurations can not only be obtained through multiple scrambling code identifiers, but also can be generated based on fixed scrambling code identifiers and indexes of N SPS configuration information or process number indexes as offsets. For example, each DMRS can be generated based on the fixed scrambling code identifier and the index or process index of the SPS configuration information as an offset, using the above formula (1) to formula (3), which is not limited in this application.

Wherein, in the present application, in the schematic diagrams shown in FIG. 10 to FIG. 13 , the boxes filled in gray represent the time-frequency resources that transmit the PDSCH, and the boxes filled in white represent the time-frequency resources that do not transmit the PDSCH.

In addition, in the data transmission method, after receiving the PDSCH, the terminal device may also send feedback information, where the feedback information is used to indicate the receiving state of the PDSCH. For example, for the data transmission shown in FIG. 10 , the terminal device may send the detected feedback information of the PDSCH corresponding to DMRS0 (corresponding to SPS1 ), without sending the feedback information of the PDSCH corresponding to SPS0 at the overlapping position. That is to say, for an overlapping position in the time domain, the terminal device only needs to send 1 bit of feedback information to indicate the receiving state of the PDSCH corresponding to the detected DMRS.

Optionally, for the case where the first candidate configuration and the second candidate configuration overlap in the time domain, the feedback information sent by the terminal device is used to indicate that the detected first information and the first information are in a one-to-one correspondence Corresponding to the candidate configuration, the reception state of the received PDSCH. That is, when the first candidate configuration and the second candidate configuration overlap in the time domain, the terminal device only needs to send the feedback information of the PDSCH transmitted by one of the candidate configurations.

In an optional implementation manner, each candidate configuration satisfies the time domain position of the first information on the time domain resource of the candidate configuration is one of the candidate position set, that is, the first information on the time domain resource of each candidate configuration The time-domain position of is one of the set of candidate positions. Assume that a time slot has 14 symbols, which are respectively symbol 0, symbol 1, ..., symbol 13. There are two modes of time domain resources of PDSCH: type (type) A and type B. Under type A, the start symbol of PDSCH can be one of symbol 0, symbol 1, symbol 2, and symbol 3, and the length is greater than 3 symbols, and the time domain position of DMRS can be symbol 2 or symbol 3. Under type B, PDSCH can start at any position, and the length is greater than 2 symbols. The time domain position of DMRS is the start symbol of PDSCH. In order to reduce the complexity of terminal equipment detecting DMRS, when the network equipment indicates N candidate configurations, the configured time-frequency resources need to satisfy: the time domain position of DMRS will only be in one or several specified positions, and these possible positions are determined by A set of candidate positions is defined. Sets can be {2}, {2, 7}, {2, 9}, {0, 7}, {0, 2, 7, 9} and so on.

In another optional implementation manner, the starting time domain position of the first information on the time domain resource of each candidate configuration is one of the candidate position set. Assume that a time slot has 14 symbols, which are respectively symbol 0, symbol 1, ..., symbol 13. There are two modes of time domain resources of PDSCH: type (type) A and type B. Under type A, the start symbol of PDSCH can be one of symbol 0, symbol 1, symbol 2, and symbol 3, and the length is greater than 3 symbols. The time domain start position of DMRS can be symbol 2 or symbol 3. Under type B, PDSCH can start at any position, and the length is greater than 2 symbols. The time domain start position of DMRS is the start symbol of PDSCH. In order to reduce the complexity of terminal equipment detecting DMRS, when the network equipment indicates N candidate configurations, the configured time-frequency resources need to satisfy: the time-domain starting position of DMRS will only be at one or a few specified positions, and these possible A location is defined by a set of candidate locations. Sets can be {2}, {2, 7}, {2, 9}, {0, 7}, {0, 2, 7, 9} and so on.

In addition, the N candidate configurations described herein are configured by SPS configuration information, or the offset of the data transmission parameters configured by the N candidate configurations is included in the SPS configuration information, or P candidate configuration sets or N candidate The configuration table is included in the SPS configuration information, and can also be configured by fields other than the SPS configuration information in the RRC signaling, that is, it can be included in other fields, and other fields need to include the index of the SPS configuration information to inform For the terminal device, the data transmission parameters respectively configured by the N candidate configurations are used for selecting and using the PDSCH in the SPS transmission configured by which SPS configuration information.

Similarly, for the case where N candidate configurations are associated with multiple SPS configuration information, the candidate configurations associated with different SPS configuration information may also include the index of the SPS configuration information, so as to inform the terminal device, which candidate configurations are respectively configured with data transmission parameters that are Which SPS configuration information is used for the selection and use of PDSCH in SPS transmission.

In the foregoing embodiments, the descriptions of each embodiment have their own emphases. To avoid redundancy, for parts not described in detail in a certain embodiment, reference may be made to relevant descriptions of other embodiments.

In order to realize the functions of any of the data transmission methods provided in the embodiments of the present application, the network device and the terminal device may respectively include a hardware structure and a software module in the form of a hardware structure, a software module, or a hardware structure plus a software module. Realize the above functions. A certain function among the above-mentioned functions may be implemented in the form of a hardware structure, a software module, or a hardware structure plus a software module. FIG. 14 and FIG. 15 are schematic structural diagrams of possible communication devices provided by the embodiments of the present application. These communication apparatuses may be used to realize the functions of the terminal device or the network device in the foregoing method embodiments, and thus also realize the beneficial effects of the foregoing method embodiments.

The communication device 1400 shown in FIG. 14 may include a communication unit 1401 and a processing unit 1402 . The communication unit 1401 may include a sending unit and a receiving unit, the sending unit is configured to implement a sending function, the receiving unit is configured to implement a receiving function, and the communication unit 1401 may implement a sending function and/or a receiving function. A communication unit may also be described as a transceiving unit.

The communication device 1400 may be a terminal device, may also be a device in a terminal device, and may also be a device having a terminal device function.

In an implementation manner, the communication device 1400 may implement related operations of the terminal device in the data transmission method 100 described above. Wherein, the processing unit 1402 is configured to determine N candidate configurations, each of the N candidate configurations is used to configure data transmission parameters, and there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information relationship, the N is a positive integer; the processing unit 1402 is further configured to detect the first information on the time-frequency resources of each candidate configuration; the communication unit 1401 is configured to detect the first information according to the detected first information and the detected The candidate configuration corresponding to the first information in the one-to-one correspondence relationship receives the physical downlink shared channel PDSCH, and the PDSCH includes the detected first information. Wherein, a more detailed description about the processing unit 1402 and the communication unit 1401 can be obtained by referring to the related description in the above method embodiment.

In another implementation manner, the communication device 1400 may implement related operations of the terminal device in the data transmission method 300 described above. The communication unit 1401 is configured to receive the first SPS configuration information, and the first SPS configuration information may include N candidate configurations; the processing unit 1402 is used for the terminal device to determine N candidate configurations from the first SPS configuration information, and the N candidate configurations There is a one-to-one correspondence between the candidate configurations and the N pieces of first information, and it is also used to detect the first information on the time-frequency resource of each candidate configuration; the communication unit 1401 is also used to detect the first information based on the detected first information The candidate configuration corresponding to the detected first information in a one-to-one correspondence relationship receives the PDSCH. Wherein, a more detailed description about the processing unit 1402 and the communication unit 1401 can be obtained by referring to the relevant description in the above-mentioned method embodiment.

In yet another implementation manner, the communication device 1400 may implement related operations of the terminal device in the above data transmission method 400 . The communication unit 1401 is configured to receive first SPS configuration information, the first SPS configuration information is used to configure offsets of data transmission parameters respectively configured by the N candidate configurations, and receive the first DCI, the first DCI is used to configure the N candidate configurations Configure the reference values of the respectively configured data transmission parameters; the processing unit 1402 is configured to determine N candidate configurations according to the offsets and reference values of the respectively configured data transmission parameters, and is also used to determine the time-frequency of each candidate configuration The first information is detected on the resource; the communication unit 1401 is further configured to receive the PDSCH according to the detected first information and the candidate configuration corresponding to the detected first information in a one-to-one correspondence. Wherein, a more detailed description about the processing unit 1402 and the communication unit 1401 can be obtained by referring to the relevant description in the above-mentioned method embodiment.

Similarly, the communication device 1400 can implement related operations of the terminal device in the data transmission method 500 and the data transmission method 600 described above, which will not be described in detail here.

The communication device 1400 may be a network device, a device in the network device, or a device having a network device function.

In an implementation manner, the communication device 1400 may perform related operations of the network device in the data transmission method 200 described above. Wherein, the processing unit 1402 is used to configure N candidate configurations for the terminal device, each candidate configuration in the N candidate configurations is used to configure data transmission parameters, and there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information , N is a positive integer; the processing unit 1402 is also used to determine the candidate configuration used for PDSCH transmission from the N candidate configurations; the communication unit 1401 is used to transmit the PDSCH according to the determined candidate configuration, and the PDSCH includes the determined candidate configuration in one-to-one correspondence The corresponding first information in the relation. Wherein, a more detailed description about the processing unit 1402 and the communication unit 1401 can be obtained by referring to the related description in the above method embodiment.

In another implementation manner, the communication device 1400 may implement related operations of the network device in the data transmission method 300 described above. The communication unit 1401 is used to send the first SPS configuration information, and the first SPS configuration information may include N candidate configurations; the processing unit 1402 is used to determine the candidate configuration used for PDSCH transmission from the N candidate configurations; the communication unit 1401, It is also used to send a PDSCH according to the determined candidate configuration, where the PDSCH includes the first information corresponding to the determined candidate configuration in a one-to-one correspondence. Wherein, a more detailed description about the processing unit 1402 and the communication unit 1401 can be obtained by referring to the relevant description in the above-mentioned method embodiment.

In yet another implementation manner, the communication device 1400 may implement related operations of the network device in the data transmission method 400 described above. The communication unit 1401 is configured to send the first SPS configuration information, the first SPS configuration information is used to configure the offsets of the data transmission parameters respectively configured by the N candidate configurations, and send the first DCI, the first DCI is used to configure the N candidate configurations Configure the reference values of the respectively configured data transmission parameters; the processing unit 1402 is used to determine the candidate configuration used for PDSCH transmission from the N candidate configurations; the communication unit 1401 is also used to send the PDSCH according to the determined candidate configuration, the PDSCH includes The determined candidate configurations correspond to first information in a one-to-one correspondence. Wherein, a more detailed description about the processing unit 1402 and the communication unit 1401 can be obtained by referring to the relevant description in the above-mentioned method embodiment.

Similarly, the communication device 1400 can implement related operations of the network equipment in the data transmission method 500 and the data transmission method 600 described above, which will not be described in detail here.

For the relevant content of this implementation manner, refer to the relevant content of the foregoing method embodiments. In addition, the communication device 1400 may also perform relevant operations in other embodiments.

The communication device 1500 shown in FIG. 15 may include a processor 1501 and an interface circuit 1502 . The processor 1501 and the interface circuit 1502 are coupled to each other. It can be understood that the interface circuit 1502 may be an interface circuit or an input/output interface. Optionally, the communication device 1500 may further include a memory 1503 for storing instructions executed by the processor 1501 or storing input data required by the processor 1501 to execute the instructions or storing data generated by the processor 1501 after executing the instructions.

The communication device 1500 is a terminal device or a network device: the processor 1501 executes S101 and S102 in FIG. 5, and the interface circuit 1502 is used to execute S103 in FIG. 5; or, the processor 1501 executes S201 and S202 in FIG. 6, and the interface Circuit 1502 is used for S203 among Fig. 6; Or, interface circuit 1502 is used for S301, S304 among Fig. 8, and processor 1501 executes S303 among Fig. 8; Or, interface circuit 1502 is used for S306 among Fig. 8, processor 1501 executes S302, S305 in Figure 8; or, the interface circuit 1502 is used for S401, S402, S405 in Figure 9, and the processor 1501 executes S404 in Figure 9; or, the interface circuit 1502 is used for S407 in Figure 9, The processor 1501 executes S403 and 406 in FIG. 9 .

When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information from other modules in the terminal device (such as radio frequency modules or antennas), and the information is sent to the terminal device by the network device; or, the terminal device chip sends information to other modules in the terminal device (such as radio frequency modules or antenna) to send information, which is sent by the terminal device to the network device.

When the above communication device is a module applied to network equipment, the network equipment module implements the functions of the network equipment in the above method embodiments. The network equipment module receives information from other modules in the network equipment (such as radio frequency modules or antennas), and the information is sent to the network equipment by the terminal equipment; or, the network equipment module sends information to other modules in the network equipment (such as radio frequency modules or antenna) to send information, which is sent by the network device to the terminal device. The network device module here may be a baseband chip of the network device, or a DU or other modules, and the DU here may be a DU under an open radio access network (O-RAN) architecture.

It can be understood that the processor in the embodiments of the present application can be a central processing unit (Central Processing Unit, CPU), and can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor can be a microprocessor, or any conventional processor.

The method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions. Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only Memory, registers, hard disk, removable hard disk, 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 a component of the processor. The processor and storage medium can be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Certainly, the processor and the storage medium may also exist in the network device or the terminal device as discrete components.

In the above embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs or instructions. When the computer program or instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are executed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instructions may be downloaded from a website, computer, A server or data center transmits to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrating one or more available media. The available medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disk; and it may also be a semiconductor medium, such as a solid state disk. The computer readable storage medium may be a volatile or a nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

In each embodiment of the present application, if there is no special explanation and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be referred to each other, and the technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

Claims (47)

A data transmission method, performed by a terminal device or a module in the terminal device, characterized in that the method includes: Determine N candidate configurations, each of the N candidate configurations is used to configure data transmission parameters, there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information, and the N is positive integer; Detecting the first information on the time-frequency resources of each candidate configuration respectively; According to the detected first information and the candidate configuration corresponding to the detected first information in the one-to-one correspondence, receive a physical downlink shared channel PDSCH, where the PDSCH includes the detected first information. The method according to claim 1, characterized in that, The N candidate configurations are configured by the first configuration information. The method according to claim 1, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure the offset of the data transmission parameters configured by each candidate configuration, The second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration. The method according to claim 1, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure P candidate configuration sets, each candidate configuration set in the P candidate configuration sets includes multiple candidate configurations, and P is a positive integer; The second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets, and the one candidate configuration set includes the N candidate configurations. The method according to any one of claims 2 to 4, characterized in that, The first configuration information is first semi-static SPS configuration information. The method according to claim 1, characterized in that, The N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, and the N ₁ and the N ₂ are both positive integers; The _N1 candidate configurations are configured by the first semi-persistent scheduling SPS configuration information; The N ₂ candidate configurations are configured by the second semi-persistent scheduling SPS configuration information. The method according to claim 6, characterized in that, The N ₁ candidate configurations include a first candidate configuration, the N ₂ candidate configurations include a second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in time domain. The method according to claim 7, characterized in that, The first candidate configuration and the second candidate configuration do not overlap in the frequency domain. The method according to any one of claims 1 to 8, further comprising: Send feedback information, where the feedback information is used to indicate the receiving state of the PDSCH. The method according to any one of claims 1 to 9, characterized in that, The first information is a demodulation reference signal. The method according to any one of claims 1 to 10, characterized in that, The time domain position of the first information on the time domain resources where each candidate configuration satisfies the candidate configuration is one of the candidate position set. A data transmission method, performed by a network device or a module in the network device, characterized in that the method includes: Configuring N candidate configurations for the terminal device, each of the N candidate configurations is used to configure data transmission parameters, and there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information, the N is a positive integer; Determine a candidate configuration used for physical downlink shared channel PDSCH transmission from the N candidate configurations; Sending the PDSCH according to the determined candidate configuration, where the PDSCH includes first information corresponding to the determined candidate configuration in the one-to-one correspondence. The method according to claim 12, characterized in that, The N candidate configurations are configured by the first configuration information. The method according to claim 12, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure the offset of the data transmission parameters configured by each candidate configuration, The second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration. The method according to claim 12, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure P candidate configuration sets, each candidate configuration set in the P candidate configuration sets includes multiple candidate configurations, and P is a positive integer; The second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets, and the one candidate configuration set includes the N candidate configurations. The method according to any one of claims 13 to 15, characterized in that, The first configuration information is first semi-static SPS configuration information. The method according to claim 12, characterized in that, The N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, and the N ₁ and the N ₂ are both positive integers; The N1 candidate configurations are configured by the first semi-persistent scheduling SPS configuration information; The N2 candidate configurations are configured by the second semi-persistent scheduling SPS configuration information. The method according to claim 17, characterized in that, The N ₁ candidate configurations include a first candidate configuration, the N ₂ candidate configurations include a second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in time domain. The method of claim 18, wherein, The first candidate configuration and the second candidate configuration do not overlap in the frequency domain. The method according to any one of claims 12 to 19, further comprising: Receive feedback information, where the feedback information is used to indicate the receiving state of the PDSCH. A method according to any one of claims 12 to 20, wherein The first information is a demodulation reference signal. A method according to any one of claims 12 to 21, wherein, The time domain position of the first information on the time domain resources where each candidate configuration satisfies the candidate configuration is one of the candidate position set. A communication device, characterized by comprising: a processing unit, configured to determine N candidate configurations, each of the N candidate configurations is used to configure data transmission parameters, and there is a one-to-one correspondence between the N candidate configurations and the N first pieces of information, The N is a positive integer; The processing unit is further configured to respectively detect first information on the time-frequency resources of each candidate configuration; A communication unit, configured to receive the physical downlink shared channel PDSCH according to the detected first information and the candidate configuration corresponding to the detected first information in the one-to-one correspondence, where the PDSCH includes the detected first information. The device according to claim 23, characterized in that, The N candidate configurations are configured by the first configuration information. The device according to claim 23, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure the offset of the data transmission parameters configured by each candidate configuration, The second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration. The device according to claim 23, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure P candidate configuration sets, each candidate configuration set in the P candidate configuration sets includes multiple candidate configurations, and P is a positive integer; The second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets, and the one candidate configuration set includes the N candidate configurations. Apparatus according to any one of claims 24 to 26, characterized in that The first configuration information is first semi-static SPS configuration information. The device according to claim 23, characterized in that, The N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, and the N ₁ and the N ₂ are both positive integers; The _N1 candidate configurations are configured by the first semi-persistent scheduling SPS configuration information; The N ₂ candidate configurations are configured by the second semi-persistent scheduling SPS configuration information. The apparatus according to claim 28, characterized in that, The N ₁ candidate configurations include a first candidate configuration, the N ₂ candidate configurations include a second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in time domain. The device according to claim 29, characterized in that, The first candidate configuration and the second candidate configuration do not overlap in the frequency domain. Apparatus according to any one of claims 23 to 30, characterized in that The communication unit is further configured to send feedback information, where the feedback information is used to indicate the receiving state of the PDSCH. Apparatus according to any one of claims 23 to 31 wherein, The first information is a demodulation reference signal. Apparatus according to any one of claims 23 to 32, characterized in that The time domain position of the first information on the time domain resources where each candidate configuration satisfies the candidate configuration is one of the candidate position set. A communication device, characterized by comprising: A processing unit, configured to configure N candidate configurations for the terminal device, each of the N candidate configurations is used to configure data transmission parameters, and there is a one-to-one relationship between the N candidate configurations and the N first pieces of information Correspondence, the N is a positive integer; The processing unit is further configured to determine a candidate configuration used for physical downlink shared channel PDSCH transmission from the N candidate configurations; The communication unit is configured to send the PDSCH according to the determined candidate configuration, where the PDSCH includes first information corresponding to the determined candidate configuration in the one-to-one correspondence. The device according to claim 34, characterized in that, The N candidate configurations are configured by the first configuration information. The device according to claim 34, characterized in that, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure the offset of the data transmission parameters configured by each candidate configuration, The second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration. The method of claim 34, wherein, The N candidate configurations are configured through first configuration information and second configuration information, The first configuration information is used to configure P candidate configuration sets, each candidate configuration set in the P candidate configuration sets includes multiple candidate configurations, and P is a positive integer; The second configuration information is used to indicate a candidate configuration set in the P candidate configuration sets, and the one candidate configuration set includes the N candidate configurations. Apparatus according to any one of claims 35 to 37, wherein The first configuration information is first semi-static SPS configuration information. The device according to claim 34, characterized in that, The N candidate configurations include N ₁ candidate configurations and N ₂ candidate configurations, and the N ₁ and the N ₂ are both positive integers; The N1 candidate configurations are configured by the first semi-persistent scheduling SPS configuration information; The N2 candidate configurations are configured by the second semi-persistent scheduling SPS configuration information. The device according to claim 39, characterized in that, The N ₁ candidate configurations include a first candidate configuration, the N ₂ candidate configurations include a second candidate configuration, and the first candidate configuration and the second candidate configuration overlap in time domain. The device according to claim 40, characterized in that, The first candidate configuration and the second candidate configuration do not overlap in the frequency domain. Apparatus according to any one of claims 34 to 41 wherein, The communication unit is further configured to receive feedback information, where the feedback information is used to indicate the receiving state of the PDSCH. Apparatus according to any one of claims 34 to 42, wherein The first information is a demodulation reference signal. Apparatus according to any one of claims 34 to 43, wherein The time domain position of the first information on the time domain resources where each candidate configuration satisfies the candidate configuration is one of the candidate position set. A communication device, characterized in that it includes a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to realize the method according to any one of claims 1 to 11 through a logic circuit or executing code instructions, or to realize the method as described in any one of claims 1 to 11 A method as claimed in any one of claims 12 to 22. A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, the implementation of any one of claims 1 to 11 , or implement a method as claimed in any one of claims 12 to 22. A computer program product, characterized in that it includes computer instructions, and when the computer instructions are run on a computer, the computer is made to perform the method according to any one of claims 1 to 11, or the method according to any one of claims 12 to 12. The method of any one of 22.

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