WO2023051173A1 - Procédé de transmission de données et appareil associé - Google Patents

Procédé de transmission de données et appareil associé Download PDF

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Publication number
WO2023051173A1
WO2023051173A1 PCT/CN2022/116948 CN2022116948W WO2023051173A1 WO 2023051173 A1 WO2023051173 A1 WO 2023051173A1 CN 2022116948 W CN2022116948 W CN 2022116948W WO 2023051173 A1 WO2023051173 A1 WO 2023051173A1
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candidate
configuration
information
configurations
configuration information
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PCT/CN2022/116948
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English (en)
Chinese (zh)
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丁洋
官磊
李锐杰
李胜钰
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华为技术有限公司
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Publication of WO2023051173A1 publication Critical patent/WO2023051173A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows

Definitions

  • the present application relates to the technical field of communications, and in particular to a data transmission method and a related device.
  • DCI downlink control information
  • SPS semi-persistent scheduling
  • 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.
  • 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.
  • 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.
  • 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.
  • the present application provides a data transmission method, which can be applied to a terminal device or a module in the terminal device.
  • the terminal device determines N candidate configurations, and each candidate configuration It is used to configure data transmission parameters.
  • 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.
  • PDSCH physical downlink share channel
  • 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.
  • 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.
  • the N candidate configurations are configured by the first configuration information.
  • the terminal device can receive the first configuration information from the network device, and determine N candidate configurations from the first configuration information.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • the second configuration information is downlink control information.
  • 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.
  • 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.
  • the N 1 candidate configurations include the first candidate configuration
  • the N 2 candidate configurations include the second candidate configuration
  • 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 .
  • 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.
  • the data transmission parameters such as the time-frequency resource that the terminal device can receive the PDSCH are more flexible.
  • the first candidate configuration and the second candidate configuration do not overlap in the frequency domain.
  • the sum of N 1 and N 2 is equal to N, and both N 1 and N 2 are positive integers.
  • 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.
  • the first information is a demodulation reference signal (demodulation reference signal, DMRS).
  • demodulation reference signal demodulation reference signal, DMRS
  • 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.
  • the present application also provides a data transmission method, which can be executed by a network device or a module in the network device.
  • 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.
  • 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.
  • 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.
  • 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.
  • the N candidate configurations are configured by the first configuration information.
  • 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
  • the first The second configuration information is used to configure reference values of data transmission parameters configured by each candidate configuration.
  • 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
  • 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
  • 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.
  • 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.
  • the second configuration information is downlink control information.
  • 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.
  • the N 1 candidate configurations include the first candidate configuration
  • the N 2 candidate configurations include the second candidate configuration
  • the first candidate configuration and the second candidate configuration overlap in the time domain.
  • the first candidate configuration and the second candidate configuration do not overlap in the frequency domain.
  • the method further includes: receiving feedback information, where the feedback information is used to indicate the receiving state of the sent PDSCH.
  • the first information is a demodulation reference signal.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the network devices can communicate through the Xn interface.
  • 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
  • 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.
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • 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.
  • RAN radio access network
  • CN core network
  • 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.
  • 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.
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • at least one data transmission parameter is different.
  • 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.
  • the N candidate configurations may be but not limited to the following possible implementation manners:
  • 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,
  • 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,
  • 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,
  • 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,
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the initialization seed c init of the pseudo-random sequence is obtained by using formula (1) based on the configuration parameters of the DMRS:
  • the value is 0 or 1
  • 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).
  • x 1 (n) and x 2 (n) are two sequences.
  • 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):
  • the correlation between different DMRS sequences is mainly determined by the correlation between pseudo-random sequences generated by different scrambling code IDs.
  • the N DMRSs are explicitly configured, such as configured by high-layer signaling.
  • the N DMRSs are implicitly indicated.
  • N candidate generation parameters are configured in high-level signaling
  • N DMRSs can be generated by the N candidate generation parameters.
  • 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.
  • 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 .
  • the one-to-one correspondence is explicitly configured.
  • the N DMRSs are denoted as DMRS#1 to DMRS#N respectively.
  • Table 1 is an example of the corresponding relationship between N candidate configurations and the first information.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • DMRS N candidate configurations DMRS#1 Candidate configuration 1 DMRS#2 Candidate configuration 2 ... ... DMRS#N Candidate configuration 2
  • the network device determines N pieces of first information by configuring N candidate generation parameters for the terminal device.
  • 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.
  • 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.
  • Table 3 is an example of obtaining a one-to-one correspondence based on preset rules.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • different SPS configurations carry different indexes.
  • 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.
  • periods for configuring different SPS configurations may be the same or different, which is not limited in this application.
  • FIG. 2 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.
  • eMBB enhanced Mobile Broadband
  • URLLC ultra-reliable and low latency communications
  • 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.
  • 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
  • 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
  • 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.
  • 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.
  • FIG. 5 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.
  • the data transmission method 100 may include but not limited to the following steps:
  • 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;
  • the N candidate configurations are predefined, and the terminal device may know the N candidate configurations in advance.
  • the N candidate configurations are configured by the first configuration information.
  • the terminal device receives the first configuration information, and then acquires the N candidate configurations from the first configuration information.
  • the N candidate configurations are configured through the first configuration information and the second configuration information.
  • 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.
  • 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.
  • the first configuration information may be SPS configuration information
  • the second configuration information may be DCI.
  • 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.
  • the first SPS configuration information and the second SPS configuration information may have different indexes.
  • the terminal device respectively detects the first information on the time-frequency resources of each candidate configuration
  • 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.
  • 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.
  • 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.
  • 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.
  • the data transmission method 200 Including but not limited to the following steps:
  • 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.
  • the N candidate configurations are predefined, and the network device and the terminal device may predefine the N candidate configurations.
  • the N candidate configurations are configured by the first configuration information.
  • the network device may send the first configuration information, so that the terminal device acquires the N candidate configurations from the first configuration information.
  • 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.
  • the network device determines a candidate configuration used for PDSCH transmission from N candidate configurations;
  • 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.
  • 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.
  • 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.
  • the candidate configuration used for PDSCH transmission can be notified to the terminal device through the first information.
  • the scheduling can be reduced. Signaling overhead required for data transfer.
  • the network device flexibly determines the candidate configuration used for PDSCH transmission from N candidate configurations, which can enhance the flexibility of SPS transmission.
  • candidate configuration 0 corresponds to DMRS0
  • candidate configuration 1 corresponds to DMRS1 corresponds
  • candidate configuration 2 corresponds to DMRS2
  • 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.
  • the time-frequency resource of candidate configuration 0 is different from the time-frequency resource of candidate configuration 2 .
  • 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.
  • FIG. 8 is a schematic flowchart of a data transmission method 300 provided by an embodiment of the present application.
  • a terminal device can directly obtain N candidate configurations from the first configuration information.
  • the first configuration information is SPS configuration information.
  • the first configuration information is referred to as first SPS configuration information for short.
  • the data transmission method 300 includes but is not limited to the following steps:
  • 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.
  • 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;
  • the network device determines a candidate configuration used for PDSCH transmission from N candidate configurations;
  • 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;
  • the terminal device detects the first information on the time-frequency resource of each candidate configuration
  • 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.
  • 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.
  • 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
  • the second configuration information is used to configure a reference value of the data transmission parameter configured by each candidate configuration.
  • 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.
  • the first configuration information is first SPS configuration information
  • the second configuration information may be downlink control information DCI.
  • the second configuration information is referred to as first DCI for short.
  • FIG. 9 is a schematic flow chart of a data transmission method 400 provided by an embodiment of the present application.
  • 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.
  • 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;
  • 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;
  • the terminal device determines N candidate configurations according to respectively configured data transmission parameter offsets and reference values.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the 4 MCS sets are shown in Table 4
  • N is equal to 3
  • each MCS set includes 3 MCSs
  • the first DCI includes index 2 of MCS set 2
  • the index of the MCS set included in the first DCI may be located in the MCS field in the first DCI.
  • 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
  • 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.
  • 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
  • the first DCI indicates the candidate configuration set 2
  • the three MCSs in the candidate configuration set 2 are used as SPS to transmit optional MCSs
  • 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.
  • 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.
  • 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.
  • 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 ;
  • 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.
  • each candidate configuration table includes X MCSs.
  • the three candidate configuration tables for the configuration of the first SPS configuration information 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
  • 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
  • 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.
  • N candidate configurations are configured by K SPS configuration information
  • 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.
  • 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.
  • N candidate configurations are configured by two SPS configuration information
  • the two SPS configuration information includes first SPS configuration information and second SPS configuration information
  • 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.
  • 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.
  • the N candidate configurations may also be jointly configured by multiple pieces of SPS configuration information and multiple DCIs.
  • N candidate configurations are jointly configured by K SPS configuration information and K DCIs
  • 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.
  • 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
  • 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.
  • 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.
  • the K 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.
  • 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.
  • 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
  • the two DCIs include the first DCI and the second DCI
  • 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
  • the sum of N 1 and N 2 is N.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • N 1 candidate configurations include the first candidate configuration
  • N 2 candidate configurations include the second candidate configuration
  • the first candidate configuration and the second candidate configuration overlap in time domain.
  • the first candidate configuration overlaps with the second candidate configuration in the time domain but not in the frequency domain.
  • 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.
  • 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.
  • 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.
  • the terminal device can receive the PDSCH through the candidate configuration corresponding to the detected DMRS.
  • 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.
  • the network device may select candidate configuration 1 to transmit the data.
  • the flexibility of SPS transmission is enhanced.
  • 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.
  • 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.
  • 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;
  • 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.
  • 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.
  • 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.
  • 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.
  • N2 is also equal to 2
  • SPS1 is associated with two candidate configurations, which are candidate configuration 2 and candidate configuration 3.
  • candidate configuration 2 still corresponds to DMRS2
  • candidate configuration 3 corresponds to DMRS3.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • the boxes filled in gray represent the time-frequency resources that transmit the PDSCH
  • the boxes filled in white represent the time-frequency resources that do not transmit the PDSCH.
  • the terminal device may also send feedback information, where the feedback information is used to indicate the receiving state of the PDSCH.
  • 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.
  • 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
  • the reception state of the received PDSCH corresponds 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.
  • 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.
  • a time slot has 14 symbols, which are respectively symbol 0, symbol 1, ..., symbol 13.
  • 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 position of DMRS can be symbol 2 or symbol 3.
  • 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.
  • 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.
  • 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.
  • a time slot has 14 symbols, which are respectively symbol 0, symbol 1, ..., symbol 13.
  • 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.
  • 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.
  • 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.
  • 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
  • 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.
  • 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.
  • 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.
  • the communication device 1400 may implement related operations of the terminal device in the data transmission method 100 described above.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the communication device 1400 may perform related operations of the network device in the data transmission method 200 described above.
  • 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.
  • 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.
  • 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;
  • 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.
  • 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.
  • 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.
  • 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.
  • the interface circuit 1502 may be an interface circuit or an input/output interface.
  • 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.
  • 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 .
  • 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.
  • 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.
  • OF-RAN open radio access network
  • 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.
  • the storage medium may also be a component of the processor.
  • the processor and storage medium can be located in the ASIC.
  • 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.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software 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.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de transmission de données et un appareil associé. Dans le procédé de transmission de données, un dispositif terminal peut acquérir N configurations candidates, chaque configuration candidate étant utilisée pour configurer un paramètre de transmission de données, et les N configurations candidates correspondant à N éléments de premières informations sur une base biunivoque, N étant un nombre entier positif. De cette manière, le dispositif terminal peut détecter des premières informations sur une ressource temps-fréquence de chaque configuration candidate, et recevoir un PDSCH selon les premières informations détectées et une configuration candidate qui correspond aux premières informations dans la correspondance biunivoque. On peut voir qu'un paramètre de transmission de données utilisé pour la transmission PDSCH est configuré par la configuration candidate qui correspond aux premières informations détectées dans la correspondance biunivoque, ce qui permet de réduire les surcharges de signalisation et d'améliorer la flexibilité de la transmission SPS.
PCT/CN2022/116948 2021-09-30 2022-09-05 Procédé de transmission de données et appareil associé WO2023051173A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103856290A (zh) * 2012-12-06 2014-06-11 华为技术有限公司 数据的传输方法及装置
CN110235477A (zh) * 2019-04-29 2019-09-13 北京小米移动软件有限公司 信息传输方法、装置及计算机可读存储介质
WO2021070306A1 (fr) * 2019-10-09 2021-04-15 株式会社Ｎｔｔドコモ Terminal et procédé de communication sans fil
WO2021088071A1 (fr) * 2019-11-08 2021-05-14 Oppo广东移动通信有限公司 Procédé et appareil pour déterminer une position occupée par une ressource, équipement terminal et support de stockage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103856290A (zh) * 2012-12-06 2014-06-11 华为技术有限公司 数据的传输方法及装置
CN110235477A (zh) * 2019-04-29 2019-09-13 北京小米移动软件有限公司 信息传输方法、装置及计算机可读存储介质
WO2021070306A1 (fr) * 2019-10-09 2021-04-15 株式会社Ｎｔｔドコモ Terminal et procédé de communication sans fil
WO2021088071A1 (fr) * 2019-11-08 2021-05-14 Oppo广东移动通信有限公司 Procédé et appareil pour déterminer une position occupée par une ressource, équipement terminal et support de stockage

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