CN114765487A - Data transmission method, device and system, terminal equipment and network side equipment - Google Patents
Data transmission method, device and system, terminal equipment and network side equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The disclosure relates to a data transmission method, device and system, a terminal device and a network side device. The data transmission method comprises the following steps: acquiring repeated transmission parameters sent by network side equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the repeated transmission times of the PUSCH; and performing the allowed cross-slot repeated transmission of the PUSCH according to the repeated transmission parameters. The present disclosure allows data to be continuously transmitted across slots in repeated PUSCH transmission without being split into two code blocks, thereby improving uplink resource utilization.
Description
Technical Field
The present disclosure relates to the field of wireless communications, and in particular, to a data transmission method, apparatus and system, a terminal device, and a network side device.
Background
The communication frequency band of the 5G network is high, the user transmission power is limited, the uplink coverage capability is insufficient, and the communication quality of the users at the edge of the cell is seriously reduced. The operator must reduce the inter-site distance to meet the user demand, resulting in increased costs for the operator to deploy and maintain the 5G network.
Disclosure of Invention
The related art newly defines the property of PUSCH (Physical Uplink Shared Channel) Repetition Type B in the just frozen 3GPP Rel-16 release TS38.214, but there are still many disadvantages in Repetition Type B. The repeat transmission based on mini-slot makes full use of the uplink resource, but still has the problems of uplink resource waste, small coding gain and the like.
In view of at least one of the above technical problems, the present disclosure provides a data transmission method, apparatus and system, a terminal device and a network side device, which allow data to be transmitted continuously across timeslots without being split into two code blocks, thereby improving uplink resource utilization.
According to an aspect of the present disclosure, there is provided a data transmission method including:
acquiring repeated transmission parameters sent by network side equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the repeated transmission times of the PUSCH;
and performing the allowed cross-slot repeated transmission of the PUSCH according to the repeated transmission parameters.
In some embodiments of the present disclosure, the data transmission method further includes:
the repetitive transmission rule is predefined.
In some embodiments of the present disclosure, the allowing for the repeated transmission across slots of the PUSCH according to the repeated transmission parameter includes:
and according to a predefined repeated transmission rule, performing the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameter.
In some embodiments of the present disclosure, the performing, according to the predefined retransmission rule, the retransmission of the PUSCH allowed across slots according to the retransmission parameter includes:
repeating the transmission once by adopting the symbols of each symbol number from the transmission initial position until the repeated transmission of the repeated transmission times is completed;
according to a predefined rule allowing for the repeated transmission across time slots, the repeated transmission is performed across time slots under the condition that a time slot boundary is met in the process of one-time repeated transmission, and the repeated transmission is not divided into two repeated transmissions.
In some embodiments of the present disclosure, said performing, starting from the transmission start position, a retransmission with symbols per the number of symbols until completion of the retransmission for the number of times of the retransmission includes:
in each repeated transmission process, recording the number of symbols of current repeated transmission;
judging whether the number of the current repeated transmission symbols is equal to the number of the symbols;
and under the condition that the number of the symbols of the current repeated transmission is equal to the number of the symbols, the repeated transmission is finished.
In some embodiments of the present disclosure, said repeating, starting from the transmission start position, the transmission of symbols every number of symbols until the repetition of the number of repetitions is completed further comprises:
judging whether the number of the completed repeated transmission times is equal to the number of the repeated transmission times or not;
performing next repeated transmission under the condition that the number of times of the completed repeated transmission is less than the number of times of the repeated transmission;
terminating the repeated transmission in case the number of completed repeated transmissions is equal to the number of PUSCH repeated transmissions.
In some embodiments of the present disclosure, the number of symbols is a natural number with a value ranging from 1 to K, where K is a natural number greater than 14.
In some embodiments of the present disclosure, the transmission start position is a natural number having a value ranging from 0 to 13.
In some embodiments of the present disclosure, said allowing for repeated transmissions across slots according to said repeated transmission parameters comprises:
and independently configuring a demodulation reference signal for each repeated transmission for channel estimation of the repeated transmission.
According to another aspect of the present disclosure, there is provided a data transmission method including:
and sending repeated transmission parameters to the terminal equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission starting position of the PUSCH and the repeated transmission times of the PUSCH, so that the terminal equipment can perform the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameters.
According to another aspect of the present disclosure, there is provided a terminal device including:
the parameter acquisition module is configured to acquire repeated transmission parameters sent by a network side device, wherein the repeated transmission parameters include the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the number of times of repeated transmission of the PUSCH;
a repeated transmission module configured to perform the repeated transmission of the PUSCH allowed across the time slots according to the repeated transmission parameters.
In some embodiments of the present disclosure, the terminal device is configured to perform operations for implementing the data transmission method according to any of the above embodiments.
According to another aspect of the present disclosure, there is provided a network side device, including:
and the parameter sending module is configured to send the repeated transmission parameters to the terminal equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission starting position of the PUSCH and the repeated transmission times of the PUSCH, so that the terminal equipment can perform the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameters.
According to another aspect of the present disclosure, a data transmission system is provided, which includes the terminal device according to any of the above embodiments and the network side device according to any of the above embodiments.
According to another aspect of the present disclosure, there is provided a computer apparatus comprising:
a memory configured to store instructions;
a processor configured to execute the instructions to cause the computer device to perform operations to implement the data transmission method according to any of the embodiments described above.
According to another aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the non-transitory computer-readable storage medium stores computer instructions, which when executed by a processor, implement the data transmission method according to any one of the above embodiments.
The present disclosure allows data to be continuously transmitted across slots in repeated PUSCH transmission without being split into two code blocks, thereby improving uplink resource utilization.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of some embodiments of a data transmission method of the present disclosure.
Fig. 2 is a schematic diagram of other embodiments of the data transmission method of the present disclosure.
Fig. 3 is a schematic diagram of some further embodiments of the disclosed data transmission method.
Fig. 4 is a schematic diagram illustrating a comparison between the data transmission method and the Repetition Type B transmission method according to the present disclosure.
Fig. 5 is a diagram of a transmitted code block after a data transmission method in some embodiments of the present disclosure is employed.
Fig. 6 is a schematic diagram of a transmission code block after the data transmission method according to some embodiments of the disclosure is adopted.
Fig. 7 is a schematic diagram of some embodiments of a terminal device of the present disclosure.
Fig. 8 is a schematic diagram of some embodiments of a network side device of the present disclosure.
Fig. 9 is a schematic diagram of some embodiments of the disclosed data transmission system.
FIG. 10 is a schematic block diagram of some embodiments of a computer apparatus according to the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
Fig. 1 is a schematic diagram of some embodiments of the disclosed data transmission method. Preferably, the embodiment can be executed by the terminal device of the present disclosure. The method may include steps 11-12, wherein:
and step 12, the terminal equipment performs the allowed cross-slot repeated transmission of the PUSCH according to the repeated transmission parameters.
Fig. 2 is a schematic diagram of other embodiments of the data transmission method of the present disclosure. Preferably, the embodiment can be executed by the terminal device of the present disclosure. The method may comprise steps 10-12, wherein:
And step 11, the terminal equipment acquires the repeated transmission parameters sent by the network side equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the repeated transmission times of the PUSCH.
In some embodiments of the present disclosure, the number of symbols is a natural number with a value ranging from 1 to K, where K is a natural number greater than 14.
In some embodiments of the present disclosure, the transmission start position is a natural number having a value ranging from 0 to 13.
And step 12, the terminal equipment performs the allowed cross-slot repeated transmission of the PUSCH according to the repeated transmission parameters.
In some embodiments of the present disclosure, step 12 may include step 121 and step 122, wherein:
and step 121, starting from the transmission starting position, performing repeated transmission once by using the symbols of each symbol number until the repeated transmission of the repeated transmission times is completed.
In some embodiments of the present disclosure, step 121 may comprise: in each repeated transmission process, recording the number of symbols of current repeated transmission; judging whether the number of the current repeated transmission symbols is equal to the number of the symbols or not; and under the condition that the number of the symbols of the current repeated transmission is equal to the number of the symbols, the repeated transmission is finished.
In some embodiments of the present disclosure, step 121 may further comprise: judging whether the number of times of the completed repeated transmission is equal to the number of times of the repeated transmission; performing next repeated transmission under the condition that the number of times of the completed repeated transmission is less than the number of times of the repeated transmission; terminating the repeated transmission in case the number of completed repeated transmissions is equal to the number of PUSCH repeated transmissions.
And step 122, according to a predefined repeat transmission rule allowing crossing time slots, performing the repeat transmission this time across time slots under the condition of encountering a time slot boundary in the process of one-time repeat transmission, without splitting the repeat transmission into two repeat transmissions.
In some embodiments of the present disclosure, step 12 may further comprise: DMRS (Demodulation Reference Signal) is separately configured for each repetition transmission, and used for channel estimation of the current repetition transmission.
In some embodiments of the present disclosure, step 12 may further comprise: after each Repetition, the RV (Redundant version) of the PUSCH Repetition transmission is changed, and the specific value of the RV is determined by the RV sequence; and configuring DMRS symbol positions for PUSCH repeated transmission according to the DMRS Mapping Type B in the protocol.
In some embodiments of the present disclosure, there are at least 1 DMRS symbol to be transmitted per repetition.
In some embodiments of the present disclosure, step 121 may comprise: in the symbol bits occupied by one repeated transmission, an unavailable symbol may be included, wherein the number of unavailable symbols is less than the number of symbols of the repeated transmission of the PUSCH minus the number of DMRS symbols in the repeated transmission.
Based on the PUSCH data transmission method provided by the above embodiment of the present disclosure, a first allowed uplink data is transmitted across slots; second, data transmission may be performed with a unit length greater than 14 symbols. Based on the two points, flexible configuration of uplink data transmission can be realized, and more new characteristics can be realized conveniently.
The embodiment of the disclosure can realize flexible uplink channel data retransmission, improve the spectrum utilization rate and obtain higher coding gain.
Fig. 3 is a schematic diagram of some further embodiments of the data transmission method of the present disclosure. Preferably, the embodiment can be executed by the terminal device of the present disclosure. The method may comprise steps 31-32, wherein:
And step 32, the network side equipment sends repeated transmission parameters to the terminal equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the repeated transmission times of the PUSCH.
In some embodiments of the present disclosure, step 32 may comprise: the network side device instructs the terminal device to transmit by using the retransmission method through DCI (Downlink Control Information), and may still use the puschrentpype indicator-format Control 0_2 as an indication for the PUSCH channel, and multiplex the parameter configuration of the retransmission Type B.
In some embodiments of the present disclosure, compared to the Repetition Type B, the specific parameter configuration available value range of the repeat transmission method of the present disclosure is larger, so that the Repetition Type B is enhanced.
In some embodiments of the present disclosure, the indication sent by the network side device to the end device includes a transmission Start position S and a transmission symbol Length L, where S ∈ {0,1, …,27}, L ∈ {1,2, …,28}, and S + L ∈ {1,2, …,27}, which together form a SLIV (Start and Length Indicator Value, transmission Start and duration indication).
In some embodiments of the present disclosure, the indication sent by the network side device to the terminal device may further include a number of repeated transmissions field, which is used to determine, in combination with the SLIV, a specific transmission mode of the uplink data.
And step 33, the network equipment receives the data transmitted by the terminal equipment according to the repeated transmission parameter, wherein the terminal equipment carries out PUSCH repeated transmission allowed to span the time slot.
The data transmission method provided by the above embodiment based on the present disclosure is to improve the repeat transmission scheme of the uplink channel. Taking the PUSCH channel as an example, two retransmission modes, namely, Repetition Type a and Type B, are specified in the related art 3GPP TS38.214, where Type B is more excellent in performance. Compared with the existing transmission scheme, the method disclosed by the embodiment of the disclosure has the advantages of improving the resource utilization rate and obtaining larger coding gain.
For the related art retransmission Type B, transmission across time slots cannot be performed, retransmission across time slots (Nominal retransmission) must be split into two retransmissions (Actual retransmission) to be implemented (as shown in fig. 1), and DMRSs must be separately configured for both retransmissions; when there are unusable symbols, some symbols may have to be discarded and data cannot be transmitted, resulting in a decrease in uplink resource utilization.
The method of the embodiment of the present disclosure does not split the Nominal Repetition any more, and simultaneously, it can be ensured that the uplink resources are fully utilized by reasonably and flexibly configuring the parameters, thereby improving the utilization rate of the uplink resources and simplifying the scheduling information.
According to the embodiment of the disclosure, when the cross-time slot scheduling is allowed, the maximum number of symbols allowed for transmission is expanded, so that a larger coding gain can be obtained, and further the system performance and the uplink coverage capability are improved.
The system configuration of the above-described embodiments of the present disclosure is more flexible, thereby facilitating implementation of a number of new features, leading to potential performance gains.
The data transmission method of the present disclosure is explained below with specific embodiments.
Example one
Fig. 4 is a schematic diagram illustrating a comparison between the data transmission method and the Repetition Type B transmission method according to the present disclosure. As shown in fig. 4, in a common DDDSU frame structure, D is a downlink timeslot, S is a special timeslot, and U is an uplink timeslot. The S slot adopts a configuration of DL (downlink symbol): GP (guard interval symbol): UL (uplink symbol): 10:2:2, where symbols 0 to 9 are downlink symbols, symbols 10 to 11 are guard interval symbols, and symbols 12 to 13 are uplink symbols. The 5 th symbol (symbol 4) in the U slot is also unusable for special reasons.
As shown in fig. 4, line 2, using the 13 th symbol (symbol 12) of the S slot as the starting point, and adopting the existing Repetition Type B in the standard, S ═ 12, L ═ 4, and the Repetition number is 4, so as to utilize the uplink resources as much as possible, which results in that the first timing Repetition has to be split into 2 actual repetitions across the slot; meanwhile, if it is assumed that the 5 th symbol (symbol 4) of the U slot is not available, the second nominal repetition must also be divided into 2 actual repetitions, and since the symbol 5 itself cannot simultaneously transmit DMRS and data, it cannot be used to transmit any data. Thus, in this configuration, the transmission is finally divided into 5 actual transmissions of symbol lengths 2, 2, 2, 4, respectively, according to the retransmission Type B. In this example, the symbols of the S slot can be utilized by the repetition Type B, but at the same time, the symbols are wasted. Therefore, with the repetition transmission mode of the repetition Type B, 16 symbols are counted from the symbol 12 of the S slot to the symbol 13 of the U slot, the unused symbols 4 and 5 of the U slot are subtracted, and the symbols occupied by 5 DMRSs required for 5 times of actual repetition are subtracted, so that 9 symbols are obtained as the number of symbols available for transmission.
As shown in fig. 4, line 3, after the data transmission method according to the above embodiment of the present disclosure, if S is 12, L is 6, and the number of repetition times is 3, only 3 actual repetitions are used, 16 symbols from symbol 12 of the S slot to symbol 13 of the U slot are subtracted, symbol 4 unused in the U slot is subtracted, and symbols occupied by 3 DMRSs required for 3 actual repetitions are further subtracted, so that 12 symbols are obtained for the number of symbols that can be used for transmission. Therefore, the resource utilization ratio of the above embodiment of the present disclosure is improved by (12-9)/9 to 33.3%, and meanwhile, the increase of the code block length can also bring higher coding gain, thereby improving the system performance.
The embodiment of the present disclosure is applied to NR PUSCH channel transmission, and can effectively improve uplink resource utilization rate.
Example two
Fig. 5 is a diagram of a transmitted code block after a data transmission method in some embodiments of the present disclosure is employed. As shown in fig. 5, in a common DDDSU frame structure, D is a downlink timeslot, S is a special timeslot, and U is an uplink timeslot. The S slot adopts a configuration of DL (downlink symbol): GP (guard interval symbol): UL (uplink symbol): 10:2: 2.
As shown in fig. 5, line 2, if the Repetition Type B existing in the standard is used with the 13 th symbol (symbol 12) of the S slot as the starting point, S may be set to 12, L may be set to 4, and the number of repetitions may be set to 4.
As shown in fig. 5, line 3, S may be 12, L may be 16, and the repetition number may be 1. The above-mentioned embodiments of the present disclosure may jointly encode data in two slots with a code block length of 16 symbols, thereby resulting in coding gain. In the embodiment of fig. 5, according to the current standard and experience, after the improved data transmission method disclosed by the present disclosure is adopted, usually 2 DMRS symbols can meet the requirements, and thus, the resource utilization rate can also be improved.
EXAMPLE III
Fig. 6 is a schematic diagram of a transmission code block after a method for data transmission according to some embodiments of the present disclosure is adopted. As shown in fig. 6, when the frame structure of DDDSUDDSUU is adopted, for the last two U slots, data in the two slots may be jointly encoded with a code block length of 28 symbols, and joint channel estimation may be performed using DMRSs thereof, so as to obtain better performance.
In the embodiment of fig. 6, because the number of symbols is too large, according to the simulation result, 2 DMRS symbols are not enough to bring an accurate channel estimation result, and 3 to 4 DMRS symbols are needed to support the channel estimation accuracy.
The above embodiments of the present disclosure may implement cross-slot channel estimation.
The above embodiments of the present disclosure allow data to be continuously transmitted across timeslots without being split into two code blocks, thereby improving uplink resource utilization.
The above embodiments of the present disclosure also allow the code block length to be larger than 14, so as to obtain larger coding gain.
The embodiments of the present disclosure can implement schemes that are helpful for improving system performance, such as cross-slot channel estimation, and have higher practicability and potential.
Fig. 7 is a schematic diagram of some embodiments of a terminal device of the present disclosure. As shown in fig. 7, the terminal device of the present disclosure may include a parameter obtaining module 71 and a repeated transmission module 72, where:
the parameter obtaining module 71 is configured to obtain a retransmission parameter sent by a network side device, where the retransmission parameter includes the number of repeatedly transmitted symbols of a physical uplink shared channel PUSCH, a transmission start position of the PUSCH, and the number of times of repeatedly transmitting the PUSCH.
In some embodiments of the present disclosure, the number of symbols is a natural number with a value ranging from 1 to K, where K is a natural number greater than 14.
In some embodiments of the present disclosure, the transmission start position is a natural number having a value ranging from 0 to 13.
A repeated transmission module 72 configured to perform the repeated transmission of the PUSCH allowed across the slots according to the repeated transmission parameters.
In some embodiments of the present disclosure, as shown in fig. 7, the terminal device of the present disclosure may include a rule predefining module 70, wherein:
a rule predefining module 70 configured to predefine a repetitive transmission rule, wherein the repetitive transmission rule is a repetitive transmission rule allowing transmission across time slots.
In some embodiments of the present disclosure, the repetition transmission module 72 may be configured to perform the allowed repeated transmission across slots of the PUSCH in accordance with the repetition transmission parameters according to predefined repetition transmission rules.
In some embodiments of the present disclosure, the repeat transmission module 72 may be configured to perform a repeat transmission with symbols per the number of symbols from the transmission start position until the repeat transmission is completed for the number of repeat transmissions; according to a predefined rule allowing the repeated transmission of the cross time slot, when a time slot boundary is met in the process of one repeated transmission, the repeated transmission is carried out in the cross time slot, and the repeated transmission is not divided into two repeated transmissions.
In some embodiments of the present disclosure, the repeat transmission module 72, in a case where a repeat transmission is performed with symbols per the number of symbols from the transmission start position until a repeat transmission is completed for the number of times of the repeat transmission, may be configured to record the number of symbols currently being repeatedly transmitted during each repeat transmission; judging whether the number of the current repeated transmission symbols is equal to the number of the symbols or not; and under the condition that the number of the symbols of the current repeated transmission is equal to the number of the symbols, the repeated transmission is finished.
In some embodiments of the present disclosure, the repeat transmission module 72, in a case where a repeat transmission is performed with symbols per the number of symbols starting from the transmission start position until a repeat transmission of the number of repeat transmissions is completed, may be further configured to determine whether the number of completed repeat transmissions is equal to the number of repeat transmissions; performing next repeated transmission under the condition that the number of times of the completed repeated transmission is less than the number of times of the repeated transmission; terminating the repeated transmission in case the number of completed repeated transmissions is equal to the number of PUSCH repeated transmissions.
In some embodiments of the present disclosure, the repeated transmission module 72 may be configured to configure the demodulation reference signal for each repeated transmission separately for channel estimation of the current repeated transmission.
In some embodiments of the present disclosure, the terminal device is configured to perform operations for implementing the data transmission method according to any of the above embodiments (for example, the embodiments of fig. 1 or fig. 2).
The embodiments of the present disclosure implement retransmission of uplink channel data based on a mini-slot manner, but by allowing transmission across slots and a transmission manner of higher symbols, uplink resources can be maximally utilized and greater coding gain can be obtained. The above embodiments of the present disclosure can be configured more flexibly, and also make the system convenient to implement many new features, resulting in performance gains.
Fig. 8 is a schematic diagram of some embodiments of a network side device of the present disclosure. As shown in fig. 8, the network side device of the present disclosure may include a parameter sending module 81, where:
and the parameter sending module 81 is configured to send the repeated transmission parameters to the terminal device, where the repeated transmission parameters include the number of symbols of repeated transmission of a physical uplink shared channel, PUSCH, a transmission start position of the PUSCH, and the number of times of repeated transmission of the PUSCH, so that the terminal device performs the repeated transmission of the PUSCH allowed to span the slot according to the repeated transmission parameters.
In some embodiments of the present disclosure, the network-side device of the present disclosure may further include a rule predefining module 80, wherein:
a rule presetting module 80 configured to pre-define a duplicate transmission rule, wherein the duplicate transmission rule is a duplicate transmission rule allowing transmission across time slots.
In some embodiments of the present disclosure, the network-side device of the present disclosure may further include a data receiving module 82, where:
and a data receiving module 82 configured to receive the data transmitted by the terminal device for performing the repeated transmission of the PUSCH allowed across the slots according to the repeated transmission parameters.
The embodiments of the present disclosure provide a data transmission and reception scheme for an NR (new air interface) uplink channel, which continuously improves Repetition Type B in the existing standard, and adopts a more flexible configuration method to improve the utilization rate of uplink resources and obtain a larger coding gain.
The above embodiments of the present disclosure provide a method and device for transmitting and receiving data of uplink channels across time slots.
The above embodiments of the present disclosure relate to the field of wireless communication technology, and may be mainly used in a 5G communication system.
Fig. 9 is a schematic diagram of some embodiments of the disclosed data transmission system. As shown in fig. 9, the transmission system for improving uplink coverage performance of a physical uplink control channel according to the present disclosure may include a terminal device 91 and a network side device 92, where:
the terminal device 91 may be the terminal device described in any of the above embodiments (e.g., the embodiment of fig. 5).
The network-side device 92 may be a network-side device as described in any of the embodiments (e.g., the embodiment of fig. 6) above.
In some embodiments of the present disclosure, the network-side device 92 may be a base station.
The data transmission system provided based on the above embodiment of the present disclosure is an improvement on the repeat transmission scheme of the uplink channel. According to the embodiment of the disclosure, the non Repetition is not split any more, and the uplink resources can be fully utilized by reasonably and flexibly configuring the parameters, so that the utilization rate of the uplink resources is improved and the scheduling information is simplified.
FIG. 10 is a schematic block diagram of some embodiments of a computer apparatus according to the present disclosure. As shown in fig. 10, the computer apparatus may include a memory 101 and a processor 102.
The memory 101 is used for storing instructions, the processor 102 is coupled to the memory 101, and the processor 102 is configured to implement the data transmission method according to any of the embodiments (for example, any of the embodiments in fig. 1 to fig. 4) based on the instructions stored in the memory.
In the case that the processor 102 executes the method for implementing the data transmission according to the embodiment of fig. 1 or fig. 2, the computer apparatus may be implemented as a terminal device.
In the case that the processor 102 executes the method for implementing the data transmission according to the embodiment of fig. 3, the computer apparatus may be implemented as a network-side device.
As shown in fig. 10, the computer apparatus further includes a communication interface 103 for information interaction with other devices. Meanwhile, the computer device further comprises a bus 104, and the processor 102, the communication interface 103 and the memory 101 are communicated with each other through the bus 104.
Further, the processor 102 may be a central processing unit CPU, or may be an application specific integrated circuit ASIC, or one or more integrated circuits configured to implement embodiments of the present disclosure.
Based on the computer device provided by the embodiment of the disclosure, the maximum number of symbols allowed for transmission is expanded while the cross-time slot scheduling is allowed, so that a larger coding gain can be obtained, and further the system performance and the uplink coverage capability are improved.
The system configuration of the above-described embodiments of the present disclosure is more flexible, thereby facilitating implementation of a number of new features, leading to potential performance gains.
According to another aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the non-transitory computer-readable storage medium stores computer instructions, which when executed by a processor, implement the data transmission method according to any of the embodiments (e.g., any of fig. 1-3) above.
Based on the non-transitory computer readable storage medium provided by the above embodiments of the present disclosure, allowing the cross-slot transmission of uplink data; data transmission may also be performed with a unit length greater than 14 symbols. The embodiment of the present disclosure can implement flexible configuration of uplink data transmission, and is convenient for implementing more new features.
The terminal devices and network side devices described above may be implemented as a general purpose processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware to implement the above embodiments, where the program may be stored in a non-transitory computer readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic or optical disk, and the like.
The description of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the disclosure in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the disclosure and the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (13)
1. A method of data transmission, comprising:
acquiring repeated transmission parameters sent by network side equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the repeated transmission times of the PUSCH;
and performing the allowed cross-slot repeated transmission of the PUSCH according to the repeated transmission parameters.
2. The data transmission method according to claim 1, further comprising:
the repetitive transmission rule is predefined.
Wherein the performing the allowed cross-slot repeat transmission of the PUSCH according to the repeat transmission parameter comprises:
and according to a predefined repeated transmission rule, performing the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameter.
3. The data transmission method according to claim 2, wherein the performing the repeated transmission of the PUSCH allowed across slots according to the repeated transmission parameters according to the predefined repeated transmission rule comprises:
repeating the transmission once by adopting the symbols of each symbol number from the transmission initial position until the repeated transmission of the repeated transmission times is completed;
under the condition that a time slot boundary is met in the process of one-time repeated transmission, the repeated transmission is carried out across time slots, and the repeated transmission is not divided into two repeated transmissions.
4. The transmission method according to claim 3, wherein said performing, from the transmission start position, a repeat transmission with symbols per the number of symbols until completion of the repeat transmission for the number of repeat transmissions comprises:
in each repeated transmission process, recording the number of symbols of current repeated transmission;
judging whether the number of the current repeated transmission symbols is equal to the number of the symbols;
and under the condition that the number of the symbols of the current repeated transmission is equal to the number of the symbols, the repeated transmission is finished.
5. The transmission method according to claim 4, wherein said repeating transmission of symbols every number of symbols from the transmission start position until the repeating transmission of the number of repeating transmissions is completed further comprises:
judging whether the number of the completed repeated transmission times is equal to the number of the repeated transmission times or not;
performing next repeated transmission under the condition that the number of times of the completed repeated transmission is less than the number of times of the repeated transmission;
terminating the repeated transmission in case the number of completed repeated transmissions is equal to the number of PUSCH repeated transmissions.
6. The data transmission method according to any one of claims 1 to 5,
the number of the symbols is a natural number with a value range of 1 to K, wherein K is a natural number larger than 14;
the transmission starting position is a natural number with a value ranging from 0 to 13.
7. The data transmission method according to any one of claims 2-5, wherein the performing the cross-slot repeat transmission of the PUSCH allowed according to the repeat transmission parameter according to a predefined repeat transmission rule comprises:
and independently configuring a demodulation reference signal for each repeated transmission for channel estimation of the repeated transmission.
8. A method of data transmission, comprising:
and sending repeated transmission parameters to the terminal equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission starting position of the PUSCH and the repeated transmission times of the PUSCH, so that the terminal equipment can perform the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameters.
9. A terminal device, comprising:
the parameter acquisition module is configured to acquire repeated transmission parameters sent by a network side device, wherein the repeated transmission parameters include the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission initial position of the PUSCH and the number of times of repeated transmission of the PUSCH;
a repeated transmission module configured to perform the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameter;
wherein the terminal device is configured to perform operations to implement the data transmission method of any one of claims 1-7.
10. A network-side device, comprising:
and the parameter sending module is configured to send the repeated transmission parameters to the terminal equipment, wherein the repeated transmission parameters comprise the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), the transmission starting position of the PUSCH and the repeated transmission times of the PUSCH, so that the terminal equipment can perform the repeated transmission of the PUSCH allowed to span the time slot according to the repeated transmission parameters.
11. A data transmission system, characterized by comprising a terminal device according to claim 9 and a network side device according to claim 10.
12. A computer device, comprising:
a memory configured to store instructions;
a processor configured to execute the instructions to cause the computer apparatus to perform operations to implement the data transmission method of any of claims 1-8.
13. A non-transitory computer readable storage medium storing computer instructions which, when executed by a processor, implement the data transmission method of any one of claims 1-8.
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| CN111277391A (en) * | 2020-01-20 | 2020-06-12 | 展讯半导体(南京)有限公司 | Information sending method and device and information receiving method and device |
| US20200267756A1 (en) * | 2019-02-15 | 2020-08-20 | Qualcomm Incorporated | Physical uplink shared channel repetition across slot boundary |
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| US20200267756A1 (en) * | 2019-02-15 | 2020-08-20 | Qualcomm Incorporated | Physical uplink shared channel repetition across slot boundary |
| CN111225444A (en) * | 2020-01-03 | 2020-06-02 | 北京展讯高科通信技术有限公司 | Data transmission method and device |
| CN111246582A (en) * | 2020-01-20 | 2020-06-05 | 展讯半导体(南京)有限公司 | Information sending method and device and information receiving method and device |
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