CN114765487B - Data transmission method, device and system, terminal equipment and network equipment - Google Patents

Data transmission method, device and system, terminal equipment and network equipment Download PDF

Info

Publication number
CN114765487B
CN114765487B CN202110049212.9A CN202110049212A CN114765487B CN 114765487 B CN114765487 B CN 114765487B CN 202110049212 A CN202110049212 A CN 202110049212A CN 114765487 B CN114765487 B CN 114765487B
Authority
CN
China
Prior art keywords
transmission
repeated transmission
repeated
pusch
symbols
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110049212.9A
Other languages
Chinese (zh)
Other versions
CN114765487A (en
Inventor
尹航
朱剑驰
李南希
郭婧
佘小明
陈鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Telecom Corp Ltd
Original Assignee
China Telecom Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Telecom Corp Ltd filed Critical China Telecom Corp Ltd
Priority to CN202110049212.9A priority Critical patent/CN114765487B/en
Publication of CN114765487A publication Critical patent/CN114765487A/en
Application granted granted Critical
Publication of CN114765487B publication Critical patent/CN114765487B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Abstract

The disclosure relates to a data transmission method, a data transmission device, a data transmission system, terminal equipment and network side equipment. 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 starting position of the PUSCH and the repeated transmission times of the PUSCH; and carrying out the repetition transmission of the PUSCH allowed to cross the time slot according to the repetition transmission parameters. The method and the device allow data to be continuously transmitted across time slots in the PUSCH repeated transmission without being split into two code blocks, so that the utilization rate of uplink resources is improved.

Description

Data transmission method, device and system, terminal equipment and network equipment
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 cell edge users is seriously reduced. Operators must reduce inter-site distances to meet user needs, resulting in increased costs to operators to deploy and maintain 5G networks.
Disclosure of Invention
The related art newly defines the characteristic of PUSCH (Physical Uplink Shared Channel ) Repetition Type B (retransmission class B) in the 3GPP Rel-16 version TS38.214 which has just been frozen, but Repetition Type B still has many drawbacks. The repeat transmission based on mini-slot (micro time slot) makes full use of uplink resource, but still has the problems of waste of uplink resource, 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 continuously transmitted across timeslots without being split into two code blocks, thereby improving uplink resource utilization.
According to one 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 starting position of the PUSCH and the repeated transmission times of the PUSCH;
and carrying out the repetition transmission of the PUSCH allowed to cross the time slot according to the repetition transmission parameters.
In some embodiments of the present disclosure, the data transmission method further includes:
the repeated transmission rule is predefined.
In some embodiments of the present disclosure, the performing the PUSCH transmission method includes:
and carrying out the repetition transmission of the PUSCH allowed to cross the time slot according to the repetition transmission parameters according to a predefined repetition transmission rule.
In some embodiments of the present disclosure, the performing, according to the predefined retransmission rule, the retransmission of the PUSCH allowed across timeslots according to the retransmission parameter includes:
starting from the transmission starting position, repeating transmission once by adopting the symbols of each symbol number until the repeated transmission of the repeated transmission times is completed;
according to a predefined rule of allowing repeated transmission across time slots, under the condition that a time slot boundary is encountered in a repeated transmission process, the repeated transmission is carried out across time slots, and the repeated transmission is not split into two repeated transmissions.
In some embodiments of the present disclosure, starting from the transmission start position, repeating transmission with a number of symbols of each symbol until repeating transmission for a number of times is completed includes:
recording the number of symbols of the current repeated transmission in each repeated transmission process;
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 current repeated transmission symbols is equal to the number of the symbols, the repeated transmission is completed.
In some embodiments of the present disclosure, starting from the transmission start position, repeating transmission of the number of symbols until the number of repeated transmissions is completed further includes:
judging whether the number of the completed repeated transmission is equal to the number of the repeated transmission;
carrying out the next repeated transmission under the condition that the number of the completed repeated transmission is smaller than the number of the repeated transmission;
and terminating the repeated transmission when the number of the completed repeated transmission is equal to the number of the repeated transmission of the PUSCH.
In some embodiments of the present disclosure, the number of symbols is a natural number ranging in value 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 ranging from 0 to 13.
In some embodiments of the disclosure, the allowing for repeated transmissions across timeslots according to the repeated transmission parameters includes:
and independently configuring demodulation reference signals for each repeated transmission, and using the demodulation reference signals 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 a repeated transmission parameter to the terminal equipment, wherein the repeated transmission parameter comprises the number of symbols of the repeated transmission of the 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 cross the time slot according to the repeated transmission parameter.
According to another aspect of the present disclosure, there is provided a terminal device including:
the device comprises a parameter acquisition module, a transmission start module and a transmission start module, wherein the parameter acquisition module is configured to acquire 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 start position of the PUSCH and the number of repeated transmission times of the PUSCH;
and the repeated transmission module is configured to perform the repeated transmission of the PUSCH allowed to cross the time slot according to the repeated transmission parameters.
In some embodiments of the present disclosure, the terminal device is configured to perform operations implementing the data transmission method according to any of the embodiments described above.
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 a repeated transmission parameter to the terminal equipment, wherein the repeated transmission parameter comprises the number of symbols of the repeated transmission of the 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 cross the time slot according to the repeated transmission parameter.
According to another aspect of the present disclosure, a data transmission system is provided, which includes a terminal device according to any one of the foregoing embodiments and a network side device according to any one of the foregoing 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 apparatus to perform operations implementing a data transmission method as described in any of the embodiments above.
According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium storing computer instructions which, when executed by a processor, implement a data transmission method as described in any of the embodiments above.
The method and the device allow data to be continuously transmitted across time slots in the PUSCH repeated transmission without being split into two code blocks, so that the utilization rate of uplink resources is improved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
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 still another embodiment of the data transmission method of the present disclosure.
Fig. 4 is a schematic diagram comparing the data transmission method and Repetition Type B transmission method of the present disclosure.
Fig. 5 is a schematic diagram of a transmission code block after a data transmission method according to some embodiments of the present disclosure is adopted.
Fig. 6 is a schematic diagram of a transmission code block after a data transmission method according to some embodiments of the present 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 a data transmission system of the present disclosure.
Fig. 10 is a schematic structural view of some embodiments of the computer device of the present disclosure.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all 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. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic diagram of some embodiments of a data transmission method of the present disclosure. Preferably, the present embodiment may be performed by the terminal device of the present disclosure. The method may comprise steps 11-12, wherein:
step 11, a terminal device acquires a repeated transmission parameter sent by a network side device, wherein the repeated transmission parameter comprises the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), a transmission starting position of the PUSCH and the number of repeated transmission times of the PUSCH;
and step 12, the terminal equipment performs the repetition transmission of the PUSCH allowed to cross the time slot according to the repetition transmission parameters.
Fig. 2 is a schematic diagram of other embodiments of the data transmission method of the present disclosure. Preferably, the present embodiment may be performed by the terminal device of the present disclosure. The method may include steps 10-12, wherein:
and step 10, predefining a repeated transmission rule at the terminal equipment and the network side equipment, wherein the repeated transmission rule is a repeated transmission rule allowing transmission across time slots.
Step 11, the terminal equipment acquires a repeated transmission parameter sent by the network side equipment, wherein the repeated transmission parameter comprises the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), a transmission starting position of the PUSCH and the number of times of repeated transmission of the PUSCH.
In some embodiments of the present disclosure, the number of symbols is a natural number ranging in value 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 ranging from 0 to 13.
And step 12, the terminal equipment performs the repetition transmission of the PUSCH allowed to cross the time slot according to the repetition 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, repeating transmission once by adopting 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 include: recording the number of symbols of the current repeated transmission in each repeated transmission process; 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 current repeated transmission symbols is equal to the number of the symbols, the repeated transmission is completed.
In some embodiments of the present disclosure, step 121 may further include: judging whether the number of the completed repeated transmission is equal to the number of the repeated transmission; carrying out the next repeated transmission under the condition that the number of the completed repeated transmission is smaller than the number of the repeated transmission; and terminating the repeated transmission when the number of the completed repeated transmission is equal to the number of the repeated transmission of the PUSCH.
Step 122, according to a predefined rule of allowing repeated transmission across time slots, under the condition that a time slot boundary is encountered in a repeated transmission process, the repeated transmission is performed across time slots, without splitting the repeated transmission into two repeated transmissions.
In some embodiments of the present disclosure, step 12 may further comprise: the DMRS (Demodulation Reference Signal ) is configured separately for each repetition transmission for channel estimation of the current repetition transmission.
In some embodiments of the present disclosure, step 12 may further comprise: after each Repetition (retransmission), the RV (Redundant version, redundancy version) of PUSCH retransmission is changed, and the specific value of RV is determined by RV sequence; and configures DMRS symbol positions for PUSCH repetition transmission according to DMRS Mapping Type B in the protocol.
In some embodiments of the present disclosure, there are at least 1 DMRS symbol per retransmission.
In some embodiments of the present disclosure, step 121 may include: in the symbol bits occupied by one repetition transmission, an unavailable symbol may be included, where the number of unavailable symbols is less than the number of symbols of the repetition transmission of PUSCH minus the number of DMRS symbols in the one repetition transmission.
Based on the PUSCH data transmission method provided by the above embodiments of the present disclosure, first, uplink data transmission is allowed across timeslots; second, data transmission can be performed using a unit length of more 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 still another embodiment of the data transmission method of the present disclosure. Preferably, the present embodiment may be performed by the terminal device of the present disclosure. The method may include steps 31-32, wherein:
step 31, redefining a repeated transmission rule at the terminal equipment and the network side equipment, wherein the repeated transmission rule is a repeated transmission rule allowing transmission across time slots.
In step 32, the network side device sends a repeated transmission parameter to the terminal device, where the repeated transmission parameter includes the number of symbols of the repeated transmission of the physical uplink shared channel PUSCH, a transmission start position of the PUSCH, and the number of times of repeated transmission of the PUSCH.
In some embodiments of the present disclosure, step 32 may include: the network side equipment instructs the terminal equipment to transmit by adopting the retransmission method through DCI (Downlink Control Information ), and for the PUSCH channel, PUSCH_TypeIndexter-ForDCIFomat0_2 can be still adopted as an instruction, and the parameter configuration of repetition Type B can be multiplexed.
In some embodiments of the present disclosure, the specific parameter configuration of the disclosed retransmission method may take a larger range of values than Repetition Type B, thereby enhancing Repetition Type B.
In some embodiments of the present disclosure, the indication sent by the network side device to the terminal device includes a transmission start position S and a transmission symbol length L, where S e {0,1, …,27}, L e {1,2, …,28}, s+l e {1,2, …,27}, which together form an 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 a specific transmission mode of the uplink data in combination with the SLIV.
Step 33, the network device receives the data transmitted by the terminal device according to the repeated transmission parameters, wherein the data is transmitted by the terminal device and allowed to be repeatedly transmitted across time slots.
The data transmission method provided by the embodiment of the disclosure is based on improvement of a repeated transmission scheme of an uplink channel. Taking PUSCH as an example, two retransmission modes, repetition Type A and Type B, are specified in related art 3gpp ts38.214, where Type B performs better. The inventive method in the above-described embodiments of the present disclosure has the advantage of improving the resource utilization and obtaining a larger coding gain compared to this existing transmission scheme.
For the Repetition Type B related art, which cannot be transmitted across time slots, the retransmission (Nominal Repetition) for the across time slots must be split into two retransmissions (Actual Repetition) to be implemented (as shown in fig. 1), and DMRS must be separately configured for both retransmissions; when there are unavailable symbols, some symbols may be discarded and data cannot be transmitted, resulting in a decrease in uplink resource utilization.
The method of the embodiment of the disclosure does not split Nominal Repetition any more, and can ensure that uplink resources are fully utilized by reasonably and flexibly configuring parameters, thereby improving the utilization rate of the uplink resources and simplifying scheduling information.
According to the embodiment of the disclosure, when cross-time slot scheduling is allowed, the maximum number of symbols allowed by transmission is expanded, so that larger coding gain can be obtained, and further, the system performance and the uplink coverage capacity are improved.
The system configuration of the embodiment of the disclosure has stronger flexibility, thereby facilitating realization of a plurality of new characteristics and bringing potential performance gains.
The data transmission method of the present disclosure is described below by way of specific embodiments.
Example 1
Fig. 4 is a schematic diagram comparing the data transmission method and Repetition Type B transmission method of the present disclosure. As shown in fig. 4, in a common DDDSU frame structure, D is a downlink slot, S is a special slot, and U is an uplink slot. The S slot adopts a DL (downlink symbol): GP (guard interval symbol): UL (uplink symbol) =10:2:2 configuration mode, symbols 0-9 are downlink symbols, symbols 10-11 are guard interval symbols, and symbols 12-13 are uplink symbols. The 5 th symbol (symbol 4) in the U slot is also unusable for special reasons.
As shown in line 2 of fig. 4, using the 13 th symbol (symbol 12) of the S slot as a starting point and adopting Repetition Type B existing in the standard, s=12 and l=4 can be configured, and the repetition number is 4 to utilize uplink resources as much as possible, which results in that the first time Nominal Repetition crossing the slot must be split into 2 times actual repetition; meanwhile, if it is assumed that the 5 th symbol (symbol 4) of the U slot is not available, the second time nominal repetition must be divided into 2 times actual repetition, and since the symbol 5 itself cannot transmit DMRS and data at the same time, it cannot be used to transmit any data. Thus, in this configuration, the current transmission is finally divided into 5 transmissions actual repetition of symbol length 2,2,2,4,4, respectively, according to repetition Type B. In this example, the symbols of the S slot can be utilized by repetition Type B, but at the same time, the symbols are wasted. Therefore, in the repeated transmission method of repetition Type B, from symbol 12 of the S slot to symbol 13 of the U slot, the unused symbols 4 and 5 of the U slot are subtracted, and the symbols occupied by 5 DMRS required for 5 times actual repetition are subtracted, so that 9 symbols are available for transmission.
As shown in line 3 of fig. 4, after the data transmission method in the above embodiment of the present disclosure, s=12, l=6, and the repetition number is 3, only 3 times actual repetition are adopted, from the symbol 12 of the S slot to the symbol 13 of the U slot, 16 symbols are added, the unused symbol 4 of the U slot is subtracted, and the symbols occupied by 3 DMRS required for 3 times actual repetition are subtracted, so that the number of symbols available for transmission is 12. Therefore, the resource utilization rate of the above embodiment of the present disclosure is improved by (12-9)/9=33.3%, and at the same time, the increase of the code block length can also bring higher coding gain, thereby improving the system performance.
The above embodiment of the present disclosure is applied to NR PUSCH channel transmission, so that the uplink resource utilization rate can be effectively improved.
Example two
Fig. 5 is a schematic diagram of a transmission code block after a data transmission method according to some embodiments of the present disclosure is adopted. As shown in fig. 5, in a common DDDSU frame structure, D is a downlink slot, S is a special slot, and U is an uplink slot. The S slot adopts DL (downlink symbol): GP (guard interval symbol): UL (uplink symbol) =10:2:2 configuration.
As shown in line 2 of fig. 5, using the standard Repetition Type B with the 13 th symbol (symbol 12) of the S slot as the starting point, s=12 and l=4 can be configured, and the number of repetitions is 4.
And as shown in line 3 of fig. 5, s=12, l=16 can be configured, with a repetition number of 1. The above embodiments of the present disclosure can thus jointly encode data in two slots using a code block length of 16 symbols, thereby bringing about coding gain. In the embodiment of fig. 5, after the improved data transmission method of the present disclosure is adopted according to the current standard and experience, generally 2 DMRS symbols can meet the requirements, so that the resource utilization rate can also be improved.
Example III
Fig. 6 is a schematic diagram of a transmission code block after a data transmission method 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, the data in the two slots may be jointly encoded by using the code block length of 28 symbols, and the DMRS thereof may be used for joint channel estimation, so as to obtain better performance.
The embodiment of fig. 6, because the number of symbols is too large, is insufficient for 2 DMRS symbols to bring accurate channel estimation results according to the simulation results, and requires 3 to 4 DMRS symbols to support channel estimation accuracy.
The above embodiments of the present disclosure may enable channel estimation across time slots.
The above embodiments of the present disclosure allow continuous transmission of data across slots without being split into two code blocks, thereby improving uplink resource utilization.
The above embodiments of the present disclosure also allow code block lengths greater than 14 to achieve greater coding gain.
The embodiment of the disclosure can realize a scheme which is helpful for improving the system performance, such as cross-slot channel estimation, and has more 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 acquisition module 71 and a retransmission module 72, where:
the parameter obtaining module 71 is configured to obtain a repeated transmission parameter sent by the network side device, where the repeated transmission parameter includes the number of symbols of the repeated transmission of the PUSCH, a transmission start position of the PUSCH, and a number of repeated transmission times of the PUSCH.
In some embodiments of the present disclosure, the number of symbols is a natural number ranging in value 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 ranging from 0 to 13.
And a repeated transmission module 72 configured to perform repeated transmission of PUSCH allowed across time 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 retransmission rule, wherein the retransmission rule is a retransmission rule allowing transmission across timeslots.
In some embodiments of the present disclosure, the retransmission module 72 may be configured to perform, according to a predefined retransmission rule, retransmission of PUSCH allowed across timeslots according to the retransmission parameters.
In some embodiments of the present disclosure, the retransmission module 72 may be configured to perform, starting from the transmission start position, a retransmission with the number of symbols per symbol until the retransmission is completed; according to a predefined rule of allowing repeated transmission across time slots, under the condition that a time slot boundary is encountered in a repeated transmission process, the repeated transmission is carried out across time slots, and the repeated transmission is not split into two repeated transmissions.
In some embodiments of the present disclosure, the retransmission module 72 may be configured to record the number of symbols currently retransmitted during each retransmission, in a case of repeating the transmission with one time per the number of symbols starting from the transmission start position until the number of repeated transmissions is completed; 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 current repeated transmission symbols is equal to the number of the symbols, the repeated transmission is completed.
In some embodiments of the present disclosure, the retransmission module 72 may be further configured to determine, when the number of symbols per the number of symbols is equal to the number of retransmissions, whether the number of retransmissions completed is equal to the number of retransmissions, in a case where the number of retransmissions is repeated from the transmission start position; carrying out the next repeated transmission under the condition that the number of the completed repeated transmission is smaller than the number of the repeated transmission; and terminating the repeated transmission when the number of the completed repeated transmission is equal to the number of the repeated transmission of the PUSCH.
In some embodiments of the present disclosure, the retransmission module 72 may be configured to configure the demodulation reference signal for each retransmission separately for channel estimation of the present retransmission.
In some embodiments of the present disclosure, the terminal device is configured to perform operations implementing the data transmission method described in any of the embodiments described above (e.g., the embodiment of fig. 1 or 2).
The above embodiments of the present disclosure realize retransmission of uplink channel data based on mini-slot, but by allowing transmission across slots and higher symbol transmission, uplink resources can be maximally utilized and greater coding gain can be obtained. The above embodiments of the present disclosure may be configured more flexibly, which may also facilitate the implementation of many new features in the system, 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:
the parameter sending module 81 is configured to send a repeated transmission parameter to the terminal device, where the repeated transmission parameter includes the number of symbols of the repeated transmission of the physical uplink shared channel PUSCH, a transmission starting position of the PUSCH, and the number of repeated transmission times of the PUSCH, so that the terminal device performs the repeated transmission of the PUSCH allowed to cross the time slot according to the repeated transmission parameter.
In some embodiments of the present disclosure, the network-side device of the present disclosure may further include a rule predefining module 80, wherein:
the rule presetting module 80 is configured to define a retransmission rule in advance, wherein the retransmission rule is a retransmission rule allowing transmission across slots.
In some embodiments of the present disclosure, the network side device of the present disclosure may further include a data receiving module 82, wherein:
and the data receiving module 82 is configured to receive data transmitted by the terminal equipment according to the repeated transmission parameters, wherein the data is transmitted by the terminal equipment and is allowed to be repeatedly transmitted across time slots.
The above embodiments of the present disclosure propose a data transmission and reception scheme of an NR (new air interface) uplink channel, which is continuously improved from an existing standard Repetition Type B, and a more flexible configuration method is adopted, so as 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 apparatus for transmitting and receiving uplink channel cross-slot data.
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 a data transmission system of the present disclosure. As shown in fig. 9, a transmission system for improving uplink coverage performance of a physical uplink control channel of the present disclosure may include a terminal device 91 and a network side device 92, where:
the terminal device 91 may be a terminal device as described in any of the embodiments described above (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 described above (e.g., the fig. 6 embodiment).
In some embodiments of the present disclosure, the network side device 92 may be a base station.
The data transmission system provided by the embodiment of the disclosure is an improvement on the repeated transmission scheme of the uplink channel. According to the embodiment of the disclosure, the Nominal Repetition is not split any more, and meanwhile, uplink resources can be guaranteed to be fully utilized by reasonably and flexibly configuring parameters, so that the utilization rate of the uplink resources is improved, and meanwhile, scheduling information is simplified.
Fig. 10 is a schematic structural view of some embodiments of the computer device of the present disclosure. As shown in fig. 10, the computer device may include a memory 101 and a processor 102.
Memory 101 is configured to store instructions and processor 102 is coupled to memory 101, processor 102 being configured to perform a data transmission method as described in any of the embodiments above (e.g., any of fig. 1-4) based on the instructions stored by the memory.
In case the processor 102 performs the implementation of the data transmission method as described in the embodiment of fig. 1 or fig. 2, the computer apparatus may be implemented as a terminal device.
In case the processor 102 performs the implementation of the data transmission method as described in 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 perform communication with each other through the bus 104.
Memory 101 may comprise high-speed RAM memory or may further comprise non-volatile memory (non-volatile memory), such as at least one disk memory. Memory 101 may also be a memory array. Memory 101 may also be partitioned and the blocks may be combined into virtual volumes according to certain rules.
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 by transmission is expanded while cross-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 embodiment of the disclosure has stronger flexibility, thereby facilitating realization of a plurality of new characteristics and bringing potential performance gains.
According to another aspect of the present disclosure, there is provided a non-transitory computer readable storage medium storing computer instructions which, when executed by a processor, implement a data transmission method as described in any of the embodiments (e.g. any of the embodiments of 1-3).
Based on the non-transitory computer readable storage medium provided by the above embodiments of the present disclosure, cross-slot transmission of upstream data is allowed; data transmission may also be performed using a unit length of greater than 14 symbols. The above embodiments of the present disclosure can achieve flexible configuration of uplink data transmission and facilitate implementation of more new features.
The terminal devices and network side devices described above may be implemented as general purpose processors, programmable Logic Controllers (PLCs), digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof, for performing the functions described herein.
Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Those of ordinary skill in the art will appreciate that all or a portion of the steps implementing the above embodiments may be implemented by hardware, or may be implemented by a program indicating that the relevant hardware is implemented, where the program may be stored on a non-transitory computer readable storage medium, where the storage medium may be a read-only memory, a magnetic disk or optical disk, etc.
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 those of ordinary skill in the art. The embodiments were 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 (12)

1. A data transmission method, 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 starting position of the PUSCH and the repeated transmission times of the PUSCH;
performing the repetition transmission of the PUSCH allowed cross time slots according to the repetition transmission parameters;
wherein, the performing the repeated transmission of the PUSCH allowed to cross the time slot according to the repeated transmission parameter includes:
starting from the transmission starting position, repeating transmission once by adopting the symbols of each symbol number until the repeated transmission of the repeated transmission times is completed;
under the condition that a time slot boundary is encountered in the process of one-time repeated transmission, the repeated transmission is carried out across time slots, and the repeated transmission is not split into two repeated transmissions.
2. The data transmission method according to claim 1, further comprising:
predefining a repeated transmission rule;
wherein, the performing the repeated transmission of the PUSCH allowed to cross the time slot according to the repeated transmission parameter includes:
and carrying out the repetition transmission of the PUSCH allowed to cross the time slot according to the repetition transmission parameters according to a predefined repetition transmission rule.
3. The transmission method according to claim 1 or 2, wherein starting from the transmission start position, repeating transmission with a number of symbols per symbol until the number of repeated transmissions is completed comprises:
recording the number of symbols of the current repeated transmission in each repeated transmission process;
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 current repeated transmission symbols is equal to the number of the symbols, the repeated transmission is completed.
4. The transmission method according to claim 1 or 2, wherein the repeating transmission of the number of symbols from the transmission start position until the number of repeating transmissions is completed further comprises:
judging whether the number of the completed repeated transmission is equal to the number of the repeated transmission;
carrying out the next repeated transmission under the condition that the number of the completed repeated transmission is smaller than the number of the repeated transmission;
and terminating the repeated transmission when the number of the completed repeated transmission is equal to the number of the repeated transmission of the PUSCH.
5. A data transmission method according to claim 1 or 2, characterized in that,
the number of the symbols is a natural number ranging from 1 to K, wherein K is a natural number greater than 14;
the transmission start position is a natural number ranging from 0 to 13.
6. The data transmission method according to claim 2, wherein the performing, according to the repetition transmission parameter, the repetition transmission of the PUSCH allowed across slots according to the repetition transmission rule defined in advance includes:
and independently configuring demodulation reference signals for each repeated transmission, and using the demodulation reference signals for channel estimation of the repeated transmission.
7. A data transmission method, comprising:
transmitting a repeated transmission parameter to a terminal device, wherein the repeated transmission parameter comprises the number of symbols of repeated transmission of a Physical Uplink Shared Channel (PUSCH), a transmission starting position of the PUSCH and the number of times of repeated transmission of the PUSCH, so that the terminal device can perform the repeated transmission of the PUSCH allowed to cross time slots according to the repeated transmission parameter, and the repeated transmission of the PUSCH allowed to cross time slots according to the repeated transmission parameter comprises: starting from the transmission starting position, repeating transmission once by adopting the symbols of each symbol number until the repeated transmission of the repeated transmission times is completed; under the condition that a time slot boundary is encountered in the process of one-time repeated transmission, the repeated transmission is carried out across time slots, and the repeated transmission is not split into two repeated transmissions.
8. A terminal device, comprising:
the device comprises a parameter acquisition module, a transmission start module and a transmission start module, wherein the parameter acquisition module is configured to acquire 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 start position of the PUSCH and the number of repeated transmission times of the PUSCH;
a repeated transmission module configured to perform repeated transmission of PUSCH allowed across slots according to the repeated transmission parameter;
the repeated transmission module is configured to perform repeated transmission once by adopting the symbols of each symbol number from the transmission starting position until the repeated transmission of the repeated transmission times is completed; according to a predefined rule of allowing repeated transmission across time slots, under the condition that a time slot boundary is encountered in the process of repeated transmission once, the repeated transmission is carried out across time slots, and the repeated transmission is not split into two repeated transmissions;
wherein the terminal device is configured to perform operations implementing the data transmission method of any of claims 2-6.
9. A network side device, comprising:
a parameter sending module, configured to send a repeated transmission parameter to a terminal device, where the repeated transmission parameter includes the number of symbols of repeated transmission of a physical uplink shared channel PUSCH, a transmission starting position of the PUSCH, and the number of repeated transmission times of the PUSCH, so that the terminal device performs, according to the repeated transmission parameter, repeated transmission of the PUSCH that allows for cross slots, where the performing, according to the repeated transmission parameter, repeated transmission of the PUSCH that allows for cross slots includes: starting from the transmission starting position, repeating transmission once by adopting the symbols of each symbol number until the repeated transmission of the repeated transmission times is completed; under the condition that a time slot boundary is encountered in the process of one-time repeated transmission, the repeated transmission is carried out across time slots, and the repeated transmission is not split into two repeated transmissions.
10. A data transmission system comprising the terminal device according to claim 8 and the network-side device according to claim 9.
11. A computer apparatus, comprising:
a memory configured to store instructions;
a processor configured to execute the instructions to cause the computer apparatus to perform operations implementing the data transmission method of any one of claims 1-7.
12. 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 1-7.
CN202110049212.9A 2021-01-14 2021-01-14 Data transmission method, device and system, terminal equipment and network equipment Active CN114765487B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110049212.9A CN114765487B (en) 2021-01-14 2021-01-14 Data transmission method, device and system, terminal equipment and network equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110049212.9A CN114765487B (en) 2021-01-14 2021-01-14 Data transmission method, device and system, terminal equipment and network equipment

Publications (2)

Publication Number Publication Date
CN114765487A CN114765487A (en) 2022-07-19
CN114765487B true CN114765487B (en) 2024-04-05

Family

ID=82363607

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110049212.9A Active CN114765487B (en) 2021-01-14 2021-01-14 Data transmission method, device and system, terminal equipment and network equipment

Country Status (1)

Country Link
CN (1) CN114765487B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11617198B2 (en) * 2019-02-15 2023-03-28 Qualcomm Incorporated Physical uplink shared channel repetition across slot boundary

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Also Published As

Publication number Publication date
CN114765487A (en) 2022-07-19

Similar Documents

Publication Publication Date Title
KR102221648B1 (en) Method and device for transmitting or receiving physical downlink control channel
EP3565342B1 (en) Methods for transmitting downlink control information, terminal device and network device
CN108696936B (en) Data sending method, data receiving method and related equipment
US11582637B2 (en) User equipment and communication method
CN109690987B (en) Data transmission method, receiving end equipment and sending end equipment
EP3618320A1 (en) Rate matching method and apparatus for polar codes
CN111418160A (en) CRC interleaving pattern for polar codes
EP3863203A1 (en) Method and apparatus for transmitting indication information
WO2021062701A1 (en) Time-frequency block cancellation
WO2018023485A1 (en) Data transmission method and device
US20180343093A1 (en) Signal transmission method and apparatus
CN114765487B (en) Data transmission method, device and system, terminal equipment and network equipment
CN107078783B (en) Method for transmitting information, access point and user equipment
CN110366263B (en) Communication method, device, equipment and storage medium
CN112312559B (en) Communication method and communication device
CN111770576B (en) Transmission method, terminal and network side equipment
CN114499789B (en) Information transmission method, terminal, network device and storage medium
US20240089060A1 (en) Reference signal port indication techniques
US20200212933A1 (en) Encoding method and apparatus
CN116566541A (en) Information transmission method, device and storage medium based on unequal diversity
CN115884261A (en) Downlink synchronization method, device and storage medium
CN117202356A (en) Data transmission processing method and device
CN115276926A (en) Mapping transmission method and device of demodulation reference signal and storage medium
CN117676797A (en) PRS muting method, PRS muting device and storage medium
CN117580144A (en) Preamble sequence transmitting and receiving method, device and storage medium

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant