CN113452485B - Method and system for realizing downlink HARQ feedback mechanism - Google Patents
Method and system for realizing downlink HARQ feedback mechanism 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
- H04L1/1848—Time-out mechanisms
- H04L1/1851—Time-out mechanisms using multiple timers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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Abstract
The invention provides a method and a system for realizing a downlink HARQ feedback mechanism, which comprises the following steps: calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity; issuing and configuring the downlink HARQ feedback opportunity value to a terminal; and sending DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal. According to the characteristic that the terminal HARQ feedback time cannot be updated frequently, the HARQ feedback time of all downlink time slots under the current system frame structure is configured in the configuration message and the reconfiguration message in advance, so that the indication is not required in the DCI scheduling, the DCI overhead can be saved, and meanwhile, the effect of simplifying the scheduling process is achieved synchronously because the HARQ feedback time of the group is not required to be fed into the DCI.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for implementing a downlink HARQ feedback mechanism.
Background
In a 5G NR (New Radio, New air interface) system, an asynchronous HARQ (Hybrid Automatic Repeat reQuest) mechanism is used, and this mechanism is adopted because uplink and Downlink configuration in the 5G system is very flexible, and thus it cannot be ensured that there is an uplink transmission opportunity at a fixed time after Downlink transmission, so that a maximum of 3 bits is used in DCI (Downlink Control Information) to display a feedback timing indicating the Downlink data, which is an index value, and a specific feedback timing value K1 is obtained from dl-datatoal-ACK Information in a configuration or reconfiguration message sent by a network side received from a terminal side through this index.
In the current eMBB (Enhanced Mobile Broadband) scene of the 5G NR system, the frame structures of the Mobile, unicom, telecommunication and other operator networking are fixed, and after configuration, the uplink and downlink configuration is not frequently changed, so that the HARQ mechanism of the UE in most cases is not changed, if each DCI still uses the existing mode to indicate the HARQ feedback time by using at most 3 bits, the DCI overhead is increased, and meanwhile, because each scheduling time needs to send the value, the scheduling complexity is also increased.
In view of this, in the 5G eMBB scenario, a new solution is needed to solve the above problem.
Disclosure of Invention
The invention provides a method and a system for realizing a downlink HARQ feedback mechanism, which are used for solving the defect of overlarge 5G downlink DCI overhead in the prior art.
In a first aspect, the present invention provides a method for implementing a downlink HARQ feedback mechanism, including:
calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity;
issuing and configuring the downlink HARQ feedback opportunity value to a terminal;
and sending DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
In an embodiment, the calculating downlink HARQ feedback timing values of all slots under the current frame structure based on the system processing capability and the terminal processing capability includes:
determining the HARQ feedback opportunity range according to the maximum HARQ process number;
acquiring the system processing capacity, the system time sequence rule, the system time delay requirement and the terminal processing capacity, and determining the repeat time interval of the HARQ feedback opportunity based on the HARQ feedback opportunity range;
and calculating to obtain a set of downlink HARQ feedback opportunity values according to the repetition time interval.
In an embodiment, the issuing and configuring the downlink HARQ feedback opportunity value to a terminal includes:
sending the set of the downlink HARQ feedback opportunity values to the terminal, and receiving a capability feedback message reported by the terminal;
determining a terminal support minimum HARQ feedback opportunity value in the capability feedback message, acquiring all HARQ feedback opportunity values which are smaller than the terminal support minimum HARQ feedback opportunity value in the set of downlink HARQ feedback opportunity values, updating and replacing all HARQ feedback opportunity values into numerical values which are larger than or equal to the terminal support minimum HARQ feedback opportunity value, and acquiring an updated set of downlink HARQ feedback opportunity values;
and if the updated set of downlink HARQ feedback opportunity values does not meet the requirements of the subsequent scene, updating the updated set of downlink HARQ feedback opportunity values again, and issuing the latest set of downlink HARQ feedback opportunity values to the terminal through a reconfiguration message.
In a second aspect, the present invention provides a method for implementing a downlink HARQ feedback mechanism, including:
receiving a configuration message or a reconfiguration message issued by a network side, and storing a set of downlink HARQ feedback opportunity values of all slots under a current frame structure;
receiving DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT sent by the network side, and acquiring a decoding result;
and acquiring a HARQ feedback opportunity value corresponding to any time slot according to the set of the downlink HARQ feedback opportunity values, reporting the decoding result to the network side on the corresponding HARQ feedback opportunity value, and feeding back a response result.
In an embodiment, the receiving DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT transmitted by the network side and obtaining a decoding result includes:
analyzing the DCI information to obtain PDSCH decoding parameters;
and processing the PDSCH data according to the PDSCH decoding parameters when the PDSCH data of any time slot arrives to obtain the decoding result.
In an embodiment, the obtaining, according to the set of downlink HARQ feedback opportunity values, a HARQ feedback opportunity value corresponding to any timeslot, reporting the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feeding back a response result includes:
reporting the demodulated PDSCH decoding information to the network side in any time slot after the HARQ feedback opportunity value is added;
if the CRC is correct, reporting ACK, otherwise reporting NACK.
In a third aspect, the present invention further provides a system for implementing a downlink HARQ feedback mechanism, including:
the calculation module is used for calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity;
a first sending module, configured to send and configure the downlink HARQ feedback opportunity value to a terminal;
and the second issuing module is used for issuing the DCI information and the PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
In a fourth aspect, the present invention further provides a system for implementing a downlink HARQ feedback mechanism, including:
the first receiving module is used for receiving a configuration message or a reconfiguration message issued by a network side and storing a set of downlink HARQ feedback opportunity values of all slots under a current frame structure;
a second receiving module, configured to receive DCI information and PDSCH data corresponding to PDSCH SLOT of any timeslot sent by the network side, and obtain a decoding result;
and the feedback module is used for acquiring the HARQ feedback opportunity value corresponding to any time slot according to the set of the downlink HARQ feedback opportunity values, reporting the decoding result to the network side on the corresponding HARQ feedback opportunity value, and feeding back a response result.
In a fifth aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of implementing any one of the downlink HARQ feedback mechanisms described above when executing the program.
In a sixth aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of implementing the downlink HARQ feedback mechanism as described in any one of the above.
According to the method and the system for realizing the downlink HARQ feedback mechanism, the HARQ feedback time of all downlink time slots under the current system frame structure is configured in the configuration message and the reconfiguration message in advance according to the characteristic that the terminal HARQ feedback time is not frequently updated, so that indication is not required in the scheduling of DCI, the expenditure of the DCI can be saved, and simultaneously, the effect of simplifying the scheduling process is synchronously achieved because the HARQ feedback time in the group is not required to enter the DCI.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a method for implementing a downlink HARQ feedback mechanism provided in the present invention;
fig. 2 is a schematic diagram of a HARQ feedback opportunity of 2.5ms single period provided by the present invention;
fig. 3 is a schematic diagram of a 2.5ms dual-cycle HARQ feedback timing provided by the present invention;
fig. 4 is a schematic diagram of a 5ms single-period HARQ feedback opportunity provided by the present invention;
fig. 5 is a second flowchart illustrating a method for implementing a downlink HARQ feedback mechanism according to the present invention;
fig. 6 is one of the structural diagrams of the system for implementing the downlink HARQ feedback mechanism provided in the present invention;
fig. 7 is a second schematic structural diagram of an implementation system of a downlink HARQ feedback mechanism provided in the present invention;
fig. 8 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Since in the 5G NR system an asynchronous HARQ mechanism is used, it is necessary to tell the terminal to feed back ACK/NACK to the base station at that moment. In the current Downlink HARQ feedback mechanism, the HARQ feedback timing is indicated by the PDSCH (Physical Downlink Shared Channel) -to-HARQ _ feedback timing indicator field content in DCI, but in a 5G eMBB scenario, the HARQ feedback mechanism may not be changed frequently for the terminal, in order to reduce the scheduling complexity and save the scheduling processing time, the HARQ mechanism of the UE may be fixed for a long period of time, and in the current system design, the HARQ feedback timing of the indicated UE that needs at most 3-bit information to be indicated every time DCI is issued, which may increase the overhead of DCI. Therefore, the invention provides a new implementation method of a 5G downlink HARQ feedback mechanism.
Fig. 1 is a schematic flow diagram of a method for implementing a downlink HARQ feedback mechanism provided in the present invention, and as shown in fig. 1, a corresponding execution main body is a network side, and includes:
101, calculating downlink HARQ feedback opportunity values of all slots under a current frame structure based on system processing capacity and terminal processing capacity;
102, issuing and configuring the downlink HARQ feedback opportunity value to a terminal;
103, sending the DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
Specifically, on the network side, the base station configuration unit calculates the optimal time for HARQ feedback of each downlink timeslot in the current frame structure according to the frame structure and processing capability of the system, the processing capability of the terminal, and the like; as in SLOT # 1, the feedback timings are K1, SLOT # 2, K2, SLOT # 3, K3, SLOT # N, Kn, and so on.
In the process of terminal access, the high layer configures the HARQ feedback time of each downlink time slot under the current frame structure to the terminal when configuring or reconfiguring the message to the terminal; the terminal knows that the feedback time is K1 under each downlink SLOT # N, the network side scheduling unit issues DCI information for scheduling the downlink service SLOT # N to the terminal, at this time, the network side does not need to carry a PDSCH-to-HARQ _ feedback timing indicator field in the DCI, the HARQ feedback time under the SLOT # N can be known to be K1 through the HARQ feedback time on each downlink time SLOT acquired in step 2, and the DCI is reduced by 3 bits at most by adopting the mechanism.
The terminal analyzes DCI information corresponding to the PDSCH SLOT # N, obtains decoding parameters of the PDSCH SLOT # N, decodes PDSCH data, and feeds back ACK if CRC is correct, or feeds back NACK to the network side if CRC is correct, the terminal obtains the feedback time K1 of the PDSCH # N according to the HARQ feedback time of each downlink SLOT obtained in the configuration message or the reconfiguration message, and feeds back ACK/NACK to the network side at the time SLOT # N + K1; here, if the HARQ feedback time changes, at this time, the HARQ feedback time of all downlink time slots in the current frame structure needs to be configured again through the reconfiguration message to the terminal, after the terminal receives the reconfiguration message, the terminal updates the previously stored HARQ feedback time to the HARQ feedback time in the newly received reconfiguration message, and performs feedback according to the updated HARQ feedback time when subsequently reporting ACK/NACK of the PDSCH.
According to the characteristic that the terminal HARQ feedback time cannot be frequently updated in the current eMBB scene, the HARQ feedback time of all downlink time slots under the current system frame structure is configured in the configuration message and the reconfiguration message in advance, so that the indication is not required in the DCI scheduling, if the HARQ feedback time changes in the subsequent processing, the updating is carried out through the reconfiguration message, the DCI overhead can be saved through the scheme, and meanwhile, the scheduling unit synchronously achieves the effect of simplifying the scheduling process because the HARQ feedback time does not need to be added into the DCI in the group of HARQ feedback time; meanwhile, after the DCI overhead is saved, the needed DCI transmission time-frequency resources may be reduced, and under the same CORESET resource, not only the number of scheduled PDCCH (Physical Downlink Control Channel) terminals is increased, but also the saved resources can be used for edge users, thereby improving the aggregation level of the PDCCH of the edge user and improving the PDCCH demodulation performance.
Based on the above embodiment, the method step 101 includes:
determining the HARQ feedback opportunity range according to the maximum HARQ process number;
acquiring the system processing capacity, the system timing sequence rule, the system time delay requirement and the terminal processing capacity, and determining the repeat time interval of the HARQ feedback opportunity based on the HARQ feedback opportunity range;
and calculating to obtain a set of downlink HARQ feedback opportunity values according to the repetition time interval.
Specifically, the range of HARQ feedback occasions is first determined:
in the 5G NR system, the maximum number of HARQ processes is 16, and the maximum HARQ opportunity value is 15 SLOT, that is, K, since the base station schedules data of a certain SLOT and receives feedback of the SLOT, and the maximum value cannot exceed 161_max15; in the 5G NR eMBB, 30KHZ subcarrier spacing scenario, if additional pilots are supported, the minimum processing time of the general UE is close to the time of one SLOT, and the minimum K1 value is K when UE group data is added to transmission 1_min1; the HARQ feedback time range of each downlink SLOT is 1-15;
then calculating the HARQ feedback time of each downlink SLOT:
and determining the downlink HARQ feedback time according to the UE capacity, the processing capacity of the base station, the frame structure and the transmission delay which are as short as possible, the downlink feedback which is as balanced as possible on each uplink time slot and the like. The following describes a determination process of the HARQ feedback timing K1 by taking a TDD (Time Division duplex) centralized frame structure as an example.
The HARQ feedback timing with a 2.5ms single-cycle frame structure in fig. 2 is described, where the uplink U frame closest to the downlink SLOT # 0 is SLOT # 4, and the uplink U frame closest to the downlink SLOT # 3 has uplink resources, the downlink feedback timing of the downlink SLOT # 0 may be determined at any time SLOT within a value range where uplink data exists, and the final feedback timing is determined according to the processing capability of the system scheduling module of each manufacturer and the conditions that the transmission delay is as small as possible, and the specific correspondence relationship is as follows:
the feedback timing of the latter 5ms repeats the timing rule of the former 5ms (this value is not uniquely determined, and each network side determines the K1 value of the symbol own system device according to the processing capacity of the own scheduling unit, etc.), that is:
SLOT#18，K1＝6；
the HARQ feedback timing with 2.5ms dual-cycle frame structure in fig. 3 is illustrated, and can be obtained as follows:
the feedback time of the last 5ms is also repeated with the time law of the previous 5 ms;
the same frame structure for a 5ms single period in fig. 4 results:
the latter 5ms feedback timing also repeats the former 5ms timing law.
After the calculation is finished, the K1 values of all downlink time slots are integrated into a set MACTaking fig. 2 as an example:
MACsince the last 5MS is the same as the first 5MS K1 value {4,3,7,6,4,3,7,6}, only the K1 set value of the first 5MS may be sent to save air interface resources; more specifically, for a 2.5ms single period, the feedback timing value M of only 4 downlink timeslots in the 2.5ms period may be sentAC＝{4,3,7,6}。
Based on any of the above embodiments, step 102 of the method includes:
sending the set of the downlink HARQ feedback opportunity values to the terminal, and receiving a capability feedback message reported by the terminal;
determining a terminal-supported minimum HARQ feedback opportunity value in the capability feedback message, acquiring all HARQ feedback opportunity values smaller than the terminal-supported minimum HARQ feedback opportunity value in the set of downlink HARQ feedback opportunity values, updating and replacing all HARQ feedback opportunity values with numerical values larger than or equal to the terminal-supported minimum HARQ feedback opportunity value, and acquiring an updated set of downlink HARQ feedback opportunity values;
and if the updated set of downlink HARQ feedback opportunity values does not meet the requirements of the subsequent scene, updating the updated set of downlink HARQ feedback opportunity values again, and issuing the latest set of downlink HARQ feedback opportunity values to the terminal through a reconfiguration message.
Specifically, in the process of terminal access, the M to be obtained when the configuration message is issued to the terminalACAnd issuing the collection value to the terminal.
After the network side receives the capability reporting message reported by the terminal, if the HARQ feedback time indicating that the terminal supports the minimum value in the capability reporting message is K, M isACK in the set1<All of K1The values are updated to values greater than or equal to K, which must correspond to the time slots with uplink symbol opportunities, and then the updated M is sent in the reconfiguration message to the terminalACAnd issuing the collection value to the terminal.
If the M is informed to the terminal when the configuration or reconfiguration message is sent to the terminal in the process of carrying out service after the terminal is accessedACIf the set does not satisfy the requirements of the subsequent scene, then the set needsUpdating MACAggregate, and update MACThe value of the set is issued to the terminal through the reconfiguration message; the terminal side and the network side are made to use the same HARQ feedback timing value.
On this basis, the DCI corresponding to the network side group PDSCH SLOT # N, particularly in the HARQ feedback mechanism of the present invention, the PDSCH-to-HARQ _ feedback timing indicator field does not need to be reconfigured in the DCI.
Fig. 5 is a second flowchart of a method for implementing a downlink HARQ feedback mechanism provided in the present invention, and as shown in fig. 5, a corresponding execution subject is a terminal, which includes:
201, receiving a configuration message or a reconfiguration message issued by a network side, and storing a set of downlink HARQ feedback opportunity values of all slots under a current frame structure;
202, receiving DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT sent by the network side, and obtaining a decoding result;
203, obtaining the HARQ feedback opportunity value corresponding to any timeslot according to the set of downlink HARQ feedback opportunity values, reporting the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feeding back a response result.
Specifically, the terminal side receives the configuration and reconfiguration message issued by the network side, and stores the M carried in the messageACAggregate values and according to the current frame structure and MACObtaining HARQ feedback values K1 of all downlink SLOT under the current frame structure according to the values in the set; as shown in fig. 2, M received by the terminalACAfter {4,3,7,6}, the terminal side obtains the feedback timing values of all downlink timeslots according to the set of values, as follows:
SLOT#18，K1＝6；
and then receiving DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT sent by a network side, acquiring a corresponding decoding result, acquiring a HARQ feedback opportunity value corresponding to any time SLOT according to the set of downlink HARQ feedback opportunity values, reporting the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feeding back a response result.
The invention can reduce the expense of dispatching the HARQ feedback time in DCI, reduce the dispatching complexity and save the dispatching processing time by configuring the HARQ feedback time of all the downlink time slots under the current system frame structure in the configuration message and the reconfiguration message in advance.
Based on the above embodiment, step 202 in the method includes:
analyzing the DCI information to obtain PDSCH decoding parameters;
and processing the PDSCH data according to the PDSCH decoding parameters when the PDSCH data of any time slot arrives to obtain the decoding result.
Specifically, the terminal side receives DCI corresponding to PDSCH SLOT # N, analyzes the DCI to acquire PDSCH decoding parameters, and when SLOT # N PDSCH data arrives, decodes the PDSCH data to acquire a decoding result.
Based on any of the above embodiments, step 203 in the method includes:
reporting the demodulated PDSCH decoding information to the network side in any time slot after the HARQ feedback opportunity value is added;
if the CRC is correct, reporting ACK, otherwise, reporting NACK.
Specifically, a value K1 corresponding to SLOT # N is obtained according to a HARQ feedback opportunity value corresponding to a downlink SLOT stored by the terminal, and then a decoding result of the PDSCH is reported in SLOT # N + K1, and ACK and CRC errors are reported correctly and NACK is reported; for example, taking the 2.5ms single-period frame structure in fig. 2 as an example, if the received DCI is PDSCH scheduling corresponding to SLOT #3, and the acquired K1 is 6, the demodulation result of the PDSCH is fed back on SLOT # 3+6, that is, SLOT # 9.
The implementation system of the downlink HARQ feedback mechanism provided in the present invention is described below, and the implementation system of the downlink HARQ feedback mechanism described below and the implementation method of the downlink HARQ feedback mechanism described above may be referred to correspondingly.
Fig. 6 is one of schematic structural diagrams of an implementation system of a downlink HARQ feedback mechanism provided in the present invention, as shown in fig. 6, including: a calculation module 61, a first issuing module 62 and a second issuing module 63, wherein:
the calculating module 61 is configured to calculate downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capability and the terminal processing capability; the first issuing module 62 is configured to issue and configure the downlink HARQ feedback opportunity value to the terminal; the second issuing module 63 is configured to issue DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
According to the characteristic that the terminal HARQ feedback time cannot be updated frequently, the HARQ feedback time of all downlink time slots under the current system frame structure is configured in the configuration message and the reconfiguration message in advance, so that the indication is not required in the DCI scheduling, the DCI overhead can be saved, and meanwhile, the effect of simplifying the scheduling process is achieved synchronously because the HARQ feedback time of the group is not required to be fed into the DCI.
Fig. 7 is a second schematic structural diagram of an implementation system of a downlink HARQ feedback mechanism provided in the present invention, as shown in fig. 7, including: a first receiving module 71, a second receiving module 72 and a feedback module 73, wherein:
the first receiving module 71 is configured to receive a configuration message or a reconfiguration message issued by a network side, and store a set of downlink HARQ feedback opportunity values of all slots in a current frame structure; the second receiving module 72 is configured to receive DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT sent by the network side, and obtain a decoding result; the feedback module 73 is configured to acquire a HARQ feedback opportunity value corresponding to any timeslot according to the set of downlink HARQ feedback opportunity values, report the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feed back a response result.
The invention can reduce the expense of dispatching the HARQ feedback time in DCI, reduce the dispatching complexity and save the dispatching processing time by configuring the HARQ feedback time of all the downlink time slots under the current system frame structure in the configuration message and the reconfiguration message in advance.
Fig. 8 illustrates a physical structure diagram of an electronic device, and as shown in fig. 8, the electronic device may include: a processor (processor)810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. Processor 810 may invoke logic instructions in memory 830 to perform a method for implementing a downlink HARQ feedback mechanism, the method comprising: calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity; issuing and configuring the downlink HARQ feedback opportunity value to a terminal; and sending DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
In addition, the logic instructions in the memory 830 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention or a part thereof which substantially contributes to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, where the computer program includes program instructions, and when the program instructions are executed by a computer, the computer can execute a method for implementing a downlink HARQ feedback mechanism provided by the above methods, where the method includes: calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity; issuing and configuring the downlink HARQ feedback opportunity value to a terminal; and sending DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
In yet another aspect, the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented by a processor to execute an implementation method of the downlink HARQ feedback mechanisms provided in the foregoing, and the method includes: calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity; issuing and configuring the downlink HARQ feedback opportunity value to a terminal; and sending DCI information and PDSCH data corresponding to the PDSCH SLOT of any time SLOT to the terminal.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for implementing a downlink HARQ feedback mechanism is characterized by comprising the following steps:
calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity;
issuing and configuring the downlink HARQ feedback opportunity value to a terminal;
sending DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT to the terminal;
the calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capability and the terminal processing capability includes:
determining the HARQ feedback opportunity range according to the maximum HARQ process number;
acquiring the system processing capacity, the system timing sequence rule, the system time delay requirement and the terminal processing capacity, and determining the repeat time interval of the HARQ feedback opportunity based on the HARQ feedback opportunity range;
and calculating to obtain a set of downlink HARQ feedback opportunity values according to the repetition time interval.
2. The method for implementing the downlink HARQ feedback mechanism according to claim 1, wherein said issuing and configuring the downlink HARQ feedback opportunity value to the terminal includes:
sending the set of the downlink HARQ feedback opportunity values to the terminal, and receiving a capability feedback message reported by the terminal;
determining a terminal support minimum HARQ feedback opportunity value in the capability feedback message, acquiring all HARQ feedback opportunity values which are smaller than the terminal support minimum HARQ feedback opportunity value in the set of downlink HARQ feedback opportunity values, updating and replacing all HARQ feedback opportunity values into numerical values which are larger than or equal to the terminal support minimum HARQ feedback opportunity value, and acquiring an updated set of downlink HARQ feedback opportunity values;
and if the updated set of downlink HARQ feedback opportunity values does not meet the requirements of the subsequent scene, updating the updated set of downlink HARQ feedback opportunity values again, and issuing the latest set of downlink HARQ feedback opportunity values to the terminal through a reconfiguration message.
3. A method for implementing a downlink HARQ feedback mechanism is characterized by comprising the following steps:
receiving a configuration message or a reconfiguration message issued by a network side, and storing a set of downlink HARQ feedback opportunity values of all slots under a current frame structure;
receiving DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT sent by the network side, and acquiring a decoding result;
acquiring a HARQ feedback opportunity value corresponding to any time slot according to the set of downlink HARQ feedback opportunity values, reporting the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feeding back a response result;
the receiving of the configuration message or the reconfiguration message issued by the network side stores a set of downlink HARQ feedback opportunity values of all slots under the current frame structure, including:
the network side determines the HARQ feedback opportunity range according to the maximum HARQ process number;
the network side acquires system processing capacity, system timing sequence rules, system time delay requirements and terminal processing capacity, and determines the repeat time interval of HARQ feedback opportunity based on the HARQ feedback opportunity range;
and the network side calculates and obtains the set of the downlink HARQ feedback opportunity values according to the repetition time interval.
4. The method of claim 3, wherein the receiving the DCI information and the PDSCH data corresponding to the PDSCH SLOT of any timeslot sent by the network side and obtaining the decoding result includes:
analyzing the DCI information to obtain PDSCH decoding parameters;
and when the PDSCH data of any time slot arrives, processing the PDSCH data according to the PDSCH decoding parameters to obtain the decoding result.
5. The method as claimed in claim 3, wherein the obtaining HARQ feedback opportunity value corresponding to any timeslot according to the set of downlink HARQ feedback opportunity values, reporting the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feeding back a response result includes:
reporting the demodulated PDSCH decoding information to the network side in any time slot after the HARQ feedback opportunity value is added;
if the CRC is correct, reporting ACK, otherwise reporting NACK.
6. A system for implementing a downlink HARQ feedback mechanism is characterized by comprising:
the calculation module is used for calculating downlink HARQ feedback opportunity values of all slots under the current frame structure based on the system processing capacity and the terminal processing capacity;
a first issuing module, configured to issue and configure the downlink HARQ feedback opportunity value to a terminal;
the second issuing module is used for issuing DCI information and PDSCH data corresponding to PDSCH SLOT of any time SLOT to the terminal;
the calculation module is specifically configured to:
determining the HARQ feedback opportunity range according to the maximum HARQ process number;
acquiring the system processing capacity, the system timing sequence rule, the system time delay requirement and the terminal processing capacity, and determining the repeat time interval of the HARQ feedback opportunity based on the HARQ feedback opportunity range;
and calculating to obtain a set of downlink HARQ feedback opportunity values according to the repetition time interval.
7. A system for implementing a downlink HARQ feedback mechanism is characterized by comprising:
the first receiving module is used for receiving a configuration message or a reconfiguration message issued by a network side and storing a set of downlink HARQ feedback opportunity values of all slots under a current frame structure;
a second receiving module, configured to receive DCI information and PDSCH data corresponding to PDSCH SLOT of any timeslot sent by the network side, and obtain a decoding result;
a feedback module, configured to obtain a HARQ feedback opportunity value corresponding to any timeslot according to the set of downlink HARQ feedback opportunity values, report the decoding result to the network side at the corresponding HARQ feedback opportunity value, and feed back a response result;
the first receiving module is specifically configured to:
the network side determines the HARQ feedback opportunity range according to the maximum HARQ process number;
the network side acquires system processing capacity, system time sequence rules, system time delay requirements and terminal processing capacity, and determines the repeat time interval of HARQ feedback opportunity based on the HARQ feedback opportunity range;
and the network side calculates and obtains a set of the downlink HARQ feedback opportunity values according to the repetition time interval.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the method for implementing the downlink HARQ feedback mechanism according to any of claims 1 to 5 when executing the program.
9. A non-transitory computer-readable storage medium, having stored thereon a computer program, wherein the computer program, when being executed by a processor, implements the steps of a method for implementing a downlink HARQ feedback mechanism according to any of claims 1 to 5.
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