CN113839746A - HARQ-ACK feedback method, device and system - Google Patents

HARQ-ACK feedback method, device and system Download PDF

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CN113839746A
CN113839746A CN202010514909.4A CN202010514909A CN113839746A CN 113839746 A CN113839746 A CN 113839746A CN 202010514909 A CN202010514909 A CN 202010514909A CN 113839746 A CN113839746 A CN 113839746A
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channel
timing
timing parameter
target
parameter set
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CN113839746B (en
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闫志宇
魏贵明
徐菲
杜滢
刘晓峰
焦慧颖
沈霞
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China Academy of Information and Communications Technology CAICT
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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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L1/1607—Details of the supervisory signal
    • 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
    • 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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements

Abstract

The application discloses a HARQ-ACK feedback method, a device and a system, wherein in order to configure the timing difference between a first channel and a second channel, configuration information is used for determining at least 2 timing parameter sets; the timing parameter is an alternative value representing a timing difference between the first channel and the second channel; any 1 set of timing parameters corresponding to the position of the first channel and or the OFDM parameters of the second channel. The application also comprises network equipment, terminal equipment and a mobile communication system which use the method. The method solves the problems of limited peak throughput and system efficiency of terminal equipment caused by limited timing difference between a PDCCH and a scheduled PDSCH/PUSCH and limited timing difference indication flexibility between the PDSCH and a PUCCH for feeding back HARQ-ACK information of the PDSCH in a satellite communication system, a ground-air communication system and a high-frequency communication system.

Description

HARQ-ACK feedback method, device and system
Technical Field
The present application relates to the field of mobile communications technologies, and in particular, to a HARQ-ACK feedback method, device, and system.
Background
In New Radio (NR) system design, a timing difference between a downlink control channel (PDCCH) and a scheduled downlink shared channel (PDSCH) and an uplink shared channel (PUSCH) is flexibly indicated in a DCI field of the PDCCH, and a timing difference between the PDSCH and an uplink control channel (PUCCH) for feeding back hybrid automatic repeat request acknowledgement (HARQ-ACK) information is also flexibly indicated in the DCI field of the PDCCH.
A parameter configuration set (referred to as "numerology") in the OFDM system includes a subcarrier spacing size and a cyclic prefix size, etc. In the NR system, the length of one radio subframe is 1 ms. For a specific parameter configuration set mu, 1 subframe
Figure BDA0002529772730000011
And a time slot. Corresponding to different parameter configuration sets
Figure BDA0002529772730000012
The values are different and the corresponding time slot lengths are different. The current NR system supports five parameter configuration sets with a maximum subcarrier spacing of 240KHz and a minimum of 15 KHz. The larger the carrier spacing, the shorter the slot length. In the NR system, the time difference between the PDSCH and the PUCCH to which the HARQ-ACK information is fed back is granular in units of time of the PUCCH. For example, the carrier where the PUCCH is located uses the parameter configuration set μ, the time difference between the PDSCH and the HARQ-ACK is Q, and the time difference between the time unit where the end symbol of the PDSCH is located and the time unit where the PUCCH feeding back the HARQ-ACK is located is Q time units. Here, the time unit length refers to a slot length or a sub-slot length of the cell usage parameter configuration set μ in which the PUCCH is located. Similarly, the time difference between PDCCH and scheduled PDSCH/PUSCH is granular in time units where PDSCH/PUSCH is located. For example, the carrier where PDSCH/PUSCH is located uses a parameter configuration set mu, the time difference between PDCCH and scheduled PDSCH/PUSCH is P, and the time unit where the end symbol of PDCCH is located and the scheduled PDSCH/PUSCH is representedThe time difference between the time units of the PUCCH of the PDSCH/PUSCH is P time unit lengths. Here, the time element length is a slot length or a sub-slot length of the cell usage parameter configuration set μ in which the PDSCH/PUSCH is located. The time unit length of PUCCH based on the time difference between the PDSCH and PUCCH feeding back HARQ-ACK information, and the time length of PDSCH/PUSCH based on the time difference between PDCCH and scheduled PDSCH/PUSCH.
In the current parameters, the time difference between the PDSCH and the PUCCH which feeds back the HARQ-ACK information of the PDSCH mainly considers the flexibility of feedback resources, and the value is between 0 and 15. The time difference between the PDCCH and the scheduled PDSCH/PUSCH also mainly considers the scheduling flexibility, and the value is between 0 and 32. . For example, the length of 1 slot corresponding to the configuration of the cell in which the PUCCH is located is 0.5ms, and the value of the time difference between the PDSCH and the PUCCH feeding back HARQ-ACK information thereof is 3, which means 1.5 ms; for another example, the length of 1 slot corresponding to the parameter of the cell in which the PUCCH is located is 0.25ms, and a value of a time difference between the PDSCH and the PUCCH feeding back HARQ-ACK information thereof is 3, which means 0.75 ms. In this way, the parameter configuration sets for the cells in which the PUCCH and PDSCH/PUSCH are located are different, and the ranges of the absolute time lengths of the time difference between the PDSCH and the PUCCH for which HARQ-ACK information is fed back and the indication of the time difference between the PDCCH and the scheduled PDSCH/PUSCH are different.
On one hand, with the rapid development of the mobile internet, people have stronger and stronger requirements on surfing the internet anytime and anywhere, and a satellite communication system and an NR system are mutually fused to construct a comprehensive communication network integrated with the heaven and earth, so that various service requirements of user equipment everywhere are met. The ground-air communication system which is developed in a customized manner aiming at the characteristics of aviation high-speed movement, wide coverage and the like by utilizing the mature land mobile communication technology can meet the internet surfing requirement of the aviation environment.
The coverage area for both ground-to-air and satellite communications is wider than that for terrestrial communications systems. In the TDD system, due to longer propagation delay, a longer guard interval time needs to be reserved between uplink and downlink transmissions to avoid interference between uplink and downlink transmissions in the system. In order to ensure the transmission efficiency of the system, it is necessary to minimize the frequent switching between uplink and downlink transmissions, so that the uplink and downlink configuration in the TDD system may use a longer ratio of consecutive downlink or consecutive uplink time units than in the terrestrial communication system. Limited by frequency spectrum resources, in order to meet the demand of diversified multiplexing of service types, the matching condition of TDD is more diversified and flexible.
Because the continuous downlink configuration is long in duration and more flexible, the configuration and indication modes of the time difference between the current PDCCH and the PUSCH and between the PDSCH and the PUCCH feeding back the HARQ-ACK information of the PDSCH cannot meet the requirements.
On the other hand, when the evolution of NR supports higher frequency communication, more diverse parameter configuration sets may be supported, for example, a configuration with a larger subcarrier width, which corresponds to a shorter 1-slot length, may be supported. If the values of the time difference between the PDSCH and the PUCCH feeding back the HARQ-ACK information of the PDSCH are still 0-15, the values of the time difference between the PDCCH and the scheduled PDSCH/PUSCH are also 0-32, and the absolute time range indicated by the corresponding timing difference is very small. Thus, the flexibility of scheduling will be constrained to a large extent.
Therefore, the current scheme for determining the timing difference in the HARQ-ACK feedback mechanism cannot meet the requirement of the NR system for the development to a longer distance and a higher frequency.
Disclosure of Invention
The application provides a HARQ-ACK feedback method, equipment and a system, and aims to solve the problems that in a satellite communication system, an air-ground communication system and a high-frequency communication system, the peak throughput and the system efficiency of terminal equipment are limited due to the fact that the timing difference between a PDCCH and a scheduled PDSCH/PUSCH and the timing difference between the PDSCH and a PUCCH for feeding back HARQ-ACK information of the PDSCH are limited in indicating flexibility.
In a first aspect, an embodiment of the present application provides a HARQ-ACK feedback method, including the following steps:
for configuring the timing difference of the first channel and the second channel, the configuration information is used for determining at least 2 timing parameter sets; the timing parameter is an alternative value representing a timing difference between the first channel and the second channel; the at least 2 sets of timing parameters each corresponding to a different reference information value; the reference information comprises the position of the first channel and/or the OFDM parameters of the second channel.
In the embodiment of the present application, the first channel is a PDCCH, and the second channel is a PDSCH or a PUSCH scheduled by the first channel; alternatively, the first channel is a PDSCH or a PUSCH, and the second channel is a HARQ-ACK acknowledged thereto.
Preferably, the configuration information includes the at least 2 timing parameter sets, and a correspondence between each of the at least 2 timing parameter sets and the reference information. Preferably, the target timing parameter set is determined according to the correspondence between the at least 2 timing parameter sets and the reference information. Preferably, the set of timing parameters comprising larger timing parameter values corresponds to the first channel having an earlier occurrence time and/or the set of timing parameters comprising smaller timing parameter values corresponds to the first channel having a later occurrence time, depending on the time domain position distribution of the first channel.
Preferably, according to the OFDM parameters of the second channel, the timing parameter set containing larger timing parameter values corresponds to the second channel with smaller slot length, and/or the timing parameter set containing smaller timing parameter values corresponds to the second channel with larger slot length.
The time difference between the time unit of the first channel and the target time unit takes the time unit length of the second channel as granularity, and is the product of the time unit constant of the second channel and the timing parameter.
Preferably, the configuration information includes a basic timing parameter set and at least 2 coefficients, and the corresponding relationship includes: the at least 2 timing parameter sets are respectively determined by products of the at least 2 coefficients and a base timing parameter set; and determining a target coefficient in the 2 coefficients according to the OFDM parameters of the second channel, and determining a target timing parameter set according to the product of the target coefficient and the basic timing parameter set.
The method according to any of the embodiments of the present application is applied to a network device, and the network device determines and sends the configuration information. Preferably, the network device determines reference information, and determines a target timing parameter set among the at least 2 timing parameter sets according to the reference information; further preferably, in the network device, a target timing parameter set is selected according to a preset timing difference threshold value between the first channel and the second channel, and/or a target timing parameter is selected from the target timing parameter set.
The method according to any one of the embodiments of the present application is applied to a terminal device, and the terminal device determines the at least 2 timing parameter sets according to configuration information; and determining 1 target timing parameter set in the at least 2 timing parameter sets according to the reference information (the position of the first channel and/or the OFDM parameter of the second channel), the corresponding relation between the at least 2 timing parameter sets and the timing parameters. Preferably, in the terminal device, the target timing parameter is determined in the target timing parameter set according to the first indication information in the downlink control channel.
In a second aspect, the present application provides a network device, configured to determine and send the configuration information, where the network device is used in the method according to any embodiment of the first aspect of the present application; determining reference information, and determining the target timing parameter set among the at least 2 timing parameter sets according to the reference information. And is further configured to select 1 of the at least 2 sets of timing parameters according to the location of the first channel and/or the OFDM parameters of the second channel.
Preferably, an embodiment of the present application further provides a network device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method as described in any one of the embodiments of the first aspect of the application.
In a third aspect, the present application further provides a terminal device, configured to determine the at least 2 timing parameter sets according to configuration information, where the method is described in any embodiment of the first aspect in the present application; the timing control module is further configured to determine a target timing parameter set among the at least 2 timing parameter sets according to the reference information (the position of the first channel and/or the OFDM parameter of the second channel), the correspondence between the at least 2 timing parameter sets and the reference information; further, a target timing parameter is determined in the set of target timing parameters.
Preferably, an embodiment of the present application further provides a terminal device, including: the terminal device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the computer program realizes the steps of the method of any one embodiment of the application which can be used for the terminal device when being executed by the processor.
In a fourth aspect, the present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application.
In a fifth aspect, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.
The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:
in a system with larger air propagation delay such as ground-air communication or satellite communication, transmission vacancy caused by no parallel data transmission in part of time periods can be avoided through the scheme, peak throughput of terminal equipment and efficiency of the system are influenced, and HARQ-ACK feedback flexibility and system efficiency are ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of a frame format configuration of ground-air communication and satellite communication;
fig. 2 is a schematic diagram of NR system channel timing difference indication time ranges;
FIG. 3 is a flow chart of an embodiment of a method of the present application;
FIG. 4 is a schematic diagram of multiple sets of timing parameters for different locations of a first channel;
FIG. 5 is a diagram of multiple sets of timing parameters for different slot parameters;
FIG. 6 is a flow chart of an embodiment of the method of the present application for a network device;
FIG. 7 is a flowchart of an embodiment of a method of the present application for a terminal device;
FIG. 8 is a schematic diagram of an embodiment of a network device;
FIG. 9 is a schematic diagram of an embodiment of a terminal device;
fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention;
fig. 11 is a block diagram of a terminal device of another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. 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 application.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic configuration diagram of a frame format of ground-air communication and satellite communication.
With the rapid development of the mobile internet, people have stronger and stronger requirements on surfing the internet anytime and anywhere, and a satellite communication system and an NR system are mutually fused to construct a world-integrated comprehensive communication network, so that various service requirements of user equipment everywhere are met. The ground-air communication system which is developed in a customized manner aiming at the characteristics of aviation high-speed movement, wide coverage and the like by utilizing the mature land mobile communication technology can meet the internet surfing requirement of the aviation environment.
The coverage area for both ground-to-air and satellite communications is wider than that for terrestrial communications systems. In the TDD system, due to longer propagation delay, a longer guard interval time needs to be reserved between uplink and downlink transmissions to avoid interference between uplink and downlink transmissions in the system. In order to ensure the transmission efficiency of the system, it is necessary to minimize the frequent switching between uplink and downlink transmissions, so that the uplink and downlink configuration in the TDD system may use a longer ratio of consecutive downlink or consecutive uplink time units than in the terrestrial communication system.
Due to the long duration of the continuous downlink configuration, the values of the time differences between the current PDCCH and the PUSCH and between the PDSCH and the PUCCH feeding back HARQ-ACK information thereof cannot meet the indication requirement. As shown in fig. 1, for example, a configuration supporting a DL: GP: UL ratio of 28:4:8 with a period of 20ms is provided, in a range of a time difference between a currently supported PDSCH and a PUCCH feeding back HARQ-ACK information thereof, PDSCH data of a partial DL slot has no uplink resource corresponding thereto for HARQ-ACK feedback. For example, PDSCH is transmitted in time slots 17-32 within 20ms, and the range supported by the timing difference between the current PDSCH and the HARQ-ACK can meet the indication of HARQ-ACK feedback; and if the PDSCH is transmitted in the time slots 0-16, the range supported by the timing difference between the current PDSCH and the HARQ-ACK cannot meet the indication of the HARQ-ACK feedback.
Therefore, because the continuous downlink configuration time is long, the value range of the timing parameter is fixed and smaller according to the parameter configuration and indication mode of the time difference between the current PDSCH and the PUCCH which feeds back the HARQ-ACK information, so that part of DL time slots do not have timely uplink resources corresponding to the DL time slots for HARQ-ACK feedback, transmission vacancy is caused due to no parallel data transmission in part of time slots, and the peak throughput of the terminal equipment and the efficiency of the system are influenced. Similarly, when the distance between the DL slot and the UL slot is greater than the maximum value of the timing difference between the PDCCH and the PUSCH, the DL slot cannot be used for scheduling PUSCH transmission, which also affects the scheduling flexibility and load balancing of the system, and is detrimental to the overall efficiency of the system.
Fig. 2 is a diagram illustrating the NR system channel timing difference indication time range.
When the evolution of NR supports higher frequency communication, more diverse parameter configuration sets may be supported, for example, configurations with larger subcarrier widths, which correspond to shorter 1-slot lengths, may be supported. If the configuration and indication mode of the time difference between the PDSCH and the PUCCH feeding back the HARQ-ACK information of the PDSCH is still adopted, the value range of the timing parameter is fixed and is 0-15, the value of the time difference between the PDCCH and the scheduled PDSCH/PUSCH is also 0-32, and the absolute time range indicated by the corresponding timing difference is very small. Thus, the flexibility of scheduling will be constrained to a large extent. As shown in fig. 2, for example, when the PDCCH schedules the PDSCH, the PDSCH is used as a reference channel, a time difference between the PDCCH and the scheduled PDSCH takes a value of 0 to 32, and absolute time ranges of timing differences indicated by the PDCCH are different for reference channels with different subcarrier intervals (15KHz, 30KHz, 60 KHz). The time unit length corresponding to a large subcarrier interval is very short, and the absolute time range of the timing difference indicated by the timing parameters of the previous channel and the next channel is very small, so that the requirement of flexibility in the timing difference indication between the previous channel and the next channel cannot be met. Since the UE receives the previous channel, demodulates and acquires information of the previous channel, and pre-processes information of the subsequent channel according to the information of the previous channel requires a certain processing time. Too short a processing time will put high demands on the processing power and complexity of the UE. Therefore, the requirement for timing difference indication between the previous channel and the next channel cannot be satisfied.
For another example, the timing difference value between the PDSCH and the PUCCH for feeding back HARQ-ACK information thereof may be configured with any 8 values from 0 to 15 through high layer signaling. That is, the timing difference between the PDSCH and the PUCCH for feeding back its HARQ-ACK information is 15 PUCCH at maximum. If the time unit length corresponding to the numerology of the carrier where the PUCCH is located is small, the absolute time of the timing difference between the PDSCH and the PUCCH feeding back HARQ-ACK information thereof is short, which tends to affect the time flexibility of HARQ-ACK feedback and the efficiency of the system. Too short a processing time will also put high demands on the processing power and complexity of the UE and will not be able to adapt to the actual processing power and complexity level of the UE.
FIG. 3 is a flow chart of an embodiment of the method of the present application.
The embodiment of the application provides a HARQ-ACK feedback method, which comprises the following steps:
step 101, determining a timing parameter set group, which comprises at least 2 timing parameter sets;
for configuring the timing difference of the first channel and the second channel, the configuration information is used for determining at least 2 timing parameter sets; the timing parameter is an alternative value representing a timing difference between the first channel and the second channel (i.e. a value of an element in the timing parameter set); the at least 2 sets of timing parameters each correspond to a different range of reference information values.
In the embodiments of the present application, the position of the first channel and the OFDM parameter of the second channel are both referred to as reference information.
For example, the set of timing parameter sets comprises 2 sets of timing parameters t11，t12，...，t1mAnd t21，t22，...，t2n]And at least one element of the 2 timing parameter sets is not equal. The elements of the at least two sets of timing parameters are alternative values used to represent the timing difference between the first channel and the second channel.
In the embodiment of the present application, the first channel is a PDCCH, and the second channel is a PDSCH or a PUSCH scheduled by the first channel; or, the first channel is a PDSCH, and the second channel is a HARQ-ACK acknowledged to the PDSCH.
Preferably, the at least 2 timing parameter sets are preset or higher layer signaling configured.
Preferably, the correspondence between the at least 2 sets of timing parameters and the reference information is preset. Or, the configuration information includes the at least 2 timing parameter sets, and a correspondence between each of the at least 2 timing parameter sets and the reference information.
The time difference represented by the timing parameter is an integer multiple of the time unit (slot) length of the second channel.
When the NR system supports the development of the demand for a longer distance, since the continuous downlink configuration is long and more flexible, the current target timing difference set configuration mode is adopted, and the timing difference set needs to be addedAnd increasing a length of indication information indicating a position of the target timing parameter in the target timing difference set. For example, the time difference between the time unit of the first channel and the target time unit has a value range of [ X1，X2]The timing parameter set comprises Y elements, and the length of the indication information for indicating the position of the target timing parameter in the target timing difference set is Z bits, then,
Figure BDA0002529772730000091
the time difference value range between the time unit of the first channel and the target time unit is expanded to [ X ] under the development requirement of a longer distance1，X3]，X3＞X2. The length of the indication information is still Z bits, assuming that the timing parameter set still holds Y elements. Thus, in [ X1，X3]The internal taking of Y elements is compared with [ X ]1，X2]By internally taking Y elements, the indication flexibility of the target time difference is obviously reduced. If the number of elements included in the timing parameter set is increased to R, so that the value is in [ X ]1，X3]Flexibility and interval of internal taking R elements1，X2]The flexibility of taking Y elements is equivalent, on one hand, the length of the indication information needs to be increased to be more than Z bits, and on the other hand, the efficiency of the indication information is also poor, for example, the time difference between the time unit of the first channel and the target time unit is [ X ]2，X3]In the case of (2), the state indicating a small timing difference in the indication information is always invalid.
With the scheme of this embodiment, to configure the timing difference between the first channel and the second channel, the configuration information may be used to determine at least 2 timing parameter sets. The at least 2 timing parameter sets respectively correspond to the positions of different first channels, so that the requirements of validity and flexibility of target timing parameter set configuration and indication when the length of continuous downlink configuration is long and more flexible can be met under the condition that the length of the indication information is not changed.
Alternatively, when the NR system supports the growing demand for higher frequencies, since the supported subcarrier width is larger,which corresponds to 1 slot shorter in length. By adopting the current target timing difference set configuration mode, the value range of the timing difference set needs to be increased, and the length of the indication information for indicating the position of the target timing parameter in the target timing parameter set is increased. For example, the timing parameter of the first channel and the second channel has a value range of [ X'1，X′2]When the time unit length of the second channel is tau1Absolute time length of configured and indicated timing difference [ tau ]1×X′1，τ1×X′2](ii) a When the time unit length of the second channel is tau2Absolute time length of configured and indicated timing difference [ tau ]2×X′1，τ2×X′2]. If τ2＜＜τ1The length of the time unit of the second channel is tau2The absolute time length of the configured and indicated timing difference is small. On the one hand, the flexibility requirement for the timing difference indication between the first channel and the second channel cannot be met, and on the other hand, the processing power and complexity of the UE may be highly required. Absolute time length of timing difference and tau for supporting configuration and indication1×X′1，τ1×X′2]Correspondingly, the value range of the timing parameters of the first channel and the second channel needs to be expanded to [ X'1，X′3]，X′3＞X′2。
With the scheme of this embodiment, to configure the timing difference between the first channel and the second channel, the configuration information may be used to determine at least 2 timing parameter sets. The at least 2 sets of timing parameters each correspond to OFDM parameters of a different second channel. Under the condition of different time unit lengths of the second channel, the absolute time of target timing parameter set configuration and indication is different, the requirements of effectiveness and flexibility of scheduling are met, and the requirements of processing capacity and complexity of UE are adapted.
Step 102, determining a PDCCH for scheduling a communication channel;
the PDCCH is determined by a search space configuration and a CORESET configuration. The PDCCH is used for the network device to transmit messages such as scheduling PDSCH/PUSCH, adjusting transmission power of PUSCH/PUCCH, and transmitting configuration information of the system to the terminal device. Here and hereinafter in this application "/" means "and or".
Step 103, selecting a target timing parameter set from the at least 2 timing parameter sets, for determining the timing difference between the first channel and the second channel;
selecting a target timing parameter set according to the corresponding relation between the at least 2 timing parameter sets and the reference information, specifically comprising:
103A, selecting a target timing parameter set according to the corresponding relation among the position of the first channel, at least 2 timing parameter sets and reference information;
the reference information is a location of the first channel; the corresponding relation comprises that the time difference between the time unit of the first channel and the target time unit is in an interval [ D ]1，D2]When not, the target set of timing parameters is a first set of timing parameters; the time difference between the time unit of the first channel and the target time unit is in an interval [ D ]3，D4]When the target timing parameter set is a second timing parameter set, wherein D3＞D2The values of the elements in the second timing parameter set are greater than the values of the elements in the first timing parameter set;
the target time unit is the earliest time unit available for the second channel after the first channel.
Preferably, the time difference between the time unit of the first channel and the target time unit is in the interval [ D ]1，D2]When the target timing parameter set comprises elements corresponding to the timing difference between the first channel and the second channel, the alternative value of the timing difference is larger than D1. The time difference between the time unit of the first channel and the target time unit is in an interval [ D ]3，D4]When the target timing parameter set comprises elements corresponding to the timing difference between the first channel and the second channel, the alternative value of the timing difference is larger than D3. Because the timing difference between the first channel and the second channel is more than or equal to the time unit of the first channel and the target time unitThe timing parameter indicating that the time difference between the time unit of the first channel and the target time unit is small is always not used for the time difference between the first channel and the second channel. Therefore, the alternative value of the timing difference between the first channel and the second channel represented by the elements included in the timing parameter set is greater than the timing difference between the time unit in which the first channel is located and the target time unit, so that the validity of the configuration and indication of the target timing parameter set can be ensured.
That is to say, a target timing parameter set is determined according to a time difference between a time unit where a first channel is located and a target time unit, the first channel with the larger time difference corresponds to the timing parameter set with the larger timing parameter value, the first channel with the smaller time difference corresponds to the timing parameter set with the smaller timing parameter value, and the target time unit is the earliest time unit which can be used for a second channel after the first channel. The corresponding relation between the target timing parameter set and the first channel is preset according to the time domain position of the first channel. The method specifically comprises the following steps: when the time difference between the time unit of the first channel and the target time unit is in a first interval, the selected timing difference set is a first timing parameter set; when the time difference between the time unit of the first channel and the target time unit is in a second interval, the selected timing difference set is a second timing parameter set; … … the selected set of timing differences is the lth set of timing parameters when the time unit on which the first channel is located is different from the target time unit by the lth interval. In the first interval to the L-th interval, if the value of the i-th interval is larger than that of the j-th interval. The ith timing parameter set comprises timing parameter values that are greater than the timing parameter set comprised by the jth timing parameter set. The target time unit herein refers to the earliest time unit available for transmission of the second channel after the first channel. The time difference between the end time unit of the ith interval and the target time unit is QiThen, the alternative value of the timing difference between the first channel and the second channel represented by the timing parameter included in the ith timing parameter set corresponding to the ith interval is greater than QiThe validity of the target timing parameter set configuration and indication can be guaranteed.
As in example 1.
The time difference between the time unit of the first channel and the target time unit takes the time unit length of the second channel as granularity. I.e. the timing difference is an integer multiple of the time unit length of said second channel, e.g. may be the product of the time unit length of said second frequency channel and said timing parameter.
And after the target timing parameter set is selected, determining the target timing parameters in the target timing parameter set. The position of the target timing parameter in the set of target timing differences is typically indicated by the first indication information.
In prior designs, to configure the timing difference between the first channel and the second channel, if there is only one set of timing parameters, the set of timing parameters is the target set of timing parameters. The target timing parameter set comprises G elements, the first indication information is N bits in length,
Figure BDA0002529772730000131
according to this embodiment, to configure the timing difference of the first channel and the second channel, the configuration information is used to determine at least 2 timing parameter sets, and the at least 2 timing parameter sets include M elements in total. But the elements of the target timing difference set may remain equal to or less than G. Thus, the length of the first indication information can be maintained to be N bits,
Figure BDA0002529772730000132
on one hand, a target timing parameter set is determined in at least 2 timing parameter sets, and values of elements in the target timing parameter set are suitable for the current first channel, so that the validity of timing parameter configuration can be ensured; in another aspect, the first indication information has a length less than
Figure BDA0002529772730000133
The efficiency of timing parameter indication can be guaranteed.
Optionally, when the reference information is the position of the first channel, the corresponding relationship may also be that the relative position of the first channel in the current frame structure configuration period corresponds to a preset timing parameter set. For example, the current frame format configuration period is 20ms, two non-adjacent time intervals are available for sending the first channel within 20ms of the configuration period, and the first channel corresponds to two different sets of timing parameters respectively in the two time intervals, so that it can be ensured that the time intervals in which the first channel is located are different, and the configuration and indication validity of the time difference between the first channel and the second channel are ensured.
103B, selecting a target timing parameter set according to the OFDM parameters of the second channel;
the OFDM parameter of the second channel comprises a second channel slot length or a subcarrier spacing.
For example, the reference information is a time unit length corresponding to the OFDM parameter of the second channel. The corresponding relation includes that the length of the time unit corresponding to the second channel is [ T ]1，T2]When not, the target set of timing parameters is a first set of timing parameters; the length of the time unit corresponding to the second channel is [ T ]3，T4]The target set of timing parameters is a second set of timing parameters, where T1＞T4，T2≥T1，T4≥T3And the values of the elements in the second timing parameter set are greater than the values of the elements in the first timing parameter set.
The second channel with the smaller time slot length or the larger subcarrier interval corresponds to a timing parameter set including a larger maximum timing parameter value, the second channel with the larger time slot length or the smaller subcarrier interval corresponds to a timing parameter set including a smaller maximum timing parameter value, and the maximum timing parameter value is the maximum value of elements in the timing parameter set. As in example 2.
According to this embodiment, to configure the timing difference of the first channel and the second channel, the configuration information is used to determine at least 2 sets of timing parameters. When the time unit length of the second channel is tau1The value range of the timing parameter of the first channel and the second channel is [ X'1，X′2](ii) a Time unit of the second channelLength of tau2，τ2＜τ1The value range of the timing parameter of the first channel and the second channel is X'1，X′3]，X′3＞X′2. The timing difference configuration and indication of the first channel and the second channel can be guaranteed to meet the scheduling flexibility and the processing capacity requirement of the equipment.
In step 103 (and 103A or 103B), it is further optional that the configuration information includes a basic timing parameter set and at least 2 coefficients, and a relationship between the reference information and the at least 2 timing parameter sets is: the at least 2 sets of timing parameters are determined by multiplying at least 2 coefficients respectively with the base set of timing parameters. And aiming at the second channel, determining a target coefficient in the 2 coefficients according to the OFDM parameter of the second channel, and obtaining a target timing parameter set according to the product of the target coefficient and the basic timing parameter set. For example, the second channel has a time unit length of τ1Corresponding to a target parameter of beta1(ii) a The time unit length of the second channel is tau2Corresponding to a target parameter of beta2. If the basic timing parameter set is t1，t2，...，tiH, the length of the time unit with the second channel is τ1The corresponding set of timing parameters is beta1×{t1，t2，...，tiThe length of a time unit of the second channel is tau2The corresponding set of timing parameters is beta2×{t1，t2，...，ti}. Thus, if the value range of the basic timing parameter is [ X'1，X′2]The length of the time unit of the second channel is tau1The value range of the corresponding timing parameter is [ beta ]1×X′1，β1×X′2]Absolute time length of timing difference [ tau ]1×β1×X′1，τ1×β1×X′2]. The time unit length of the second channel is tau2The value range of the corresponding timing parameter is [ beta ]2×X′1，β2×X′2]Absolute time length of timing difference [ tau ]2×β2×X′1，τ2×β2×X′2]. If tau2＜τ1，β2＞β1Therefore, the timing difference configuration of the first channel and the second channel can be ensured to be equivalent to the indicated absolute time length of the timing difference, and the method can be flexibly adjusted to meet the requirements of scheduling flexibility and processing capacity of equipment.
Step 104, determining first indication information for indicating the position of the target timing parameter in the target timing parameter set;
preferably, the downlink control channel comprises first indication information for indicating a position of the selected timing parameter in the selected timing parameter set.
If there is only one element in the target set of timing parameters, the timing difference between the first channel and said second channel is determined by this element. If there are multiple elements in the target timing parameter set, indicating, by a first field in the PDCCH, that the target timing parameter between the first channel and the second channel is one element in the target timing parameter set.
As a basis for further selecting the target timing parameter, for example, a preset threshold value of the timing difference between the first channel and the second channel may be used.
When all elements in the target timing parameter set satisfy the threshold value, that is, the threshold value is already used for selecting the target timing parameter set, the indication information indicates any one element in the target timing parameter set. When only a part of the elements in the target timing parameter set satisfies the threshold value, that is, the threshold value is not used for selecting the target timing parameter set, the indication information further indicates an element satisfying the threshold value in the part of the elements.
Step 105, determining the second channel position.
And determining the position of the second channel according to the position of the first channel and the target timing parameter.
For example, the target timing parameter represents a number of time units; the time unit is a time slot configured for a cell where the second channel is located, and therefore the timing difference between the second channel and the first channel is the product of the time slot length and the target timing parameter.
Fig. 4 is a schematic diagram of different locations for multiple sets of timing parameters for a first channel.
Example 1: the reference information is a time position of the first channel.
It is assumed that the first channel is a PDSCH and the second channel is a PUCCH for feeding back HARQ-ACK information of the PDSCH. For the example of fig. 4, the ratio of DL: GP: UL in 20ms period is 28:4:8, if the range supported by the timing parameter set is directly expanded to 0-32, and the length of the field in the DCI of the PDCCH for indicating the timing difference between PDSCH and HARQ-ACK is kept unchanged, the timing parameter set must include values between 1-32. The first uplink timeslot after the GP timeslot is assumed to be the target time unit. The first channel is located in a second interval with a larger time difference from the target time unit (corresponding to a time difference range of [ D ]3，D4]Wherein D is3＝16，D432), the time difference between the HARQ-ACK feedback corresponding to the PDSCH transmission and the PDSCH cannot use these values between 0 and 15, and the first channel is located in the first interval (corresponding time difference range [ D ] where the time difference with the target time unit is small1，D2]Wherein D is1＝1，D215) the time difference between the HARQ-ACK feedback corresponding to the PDSCH transmission and the PDSCH cannot be used to values between 16-32. Compared with 8 values selected from 1 to 15 as the timing parameter set, the timing parameter configuration and indication flexibility supported by the selection of 8 values from 0 to 32 is obviously poor. If the timing parameter sets for the first interval and the second interval include values between 0 and 32, the flexibility of HARQ-ACK feedback will be greatly affected for the first channel of the first interval and the second interval, which affects the system efficiency.
In this embodiment, the target set of timing parameters is determined in the set of timing parameter sets. The timing parameter set group is composed of a plurality of timing parameter sets. The timing parameter set group includes 2 timing parameter sets: the first set of timing parameters and the second set of timing parameters are exemplified. The first timing parameter set comprises 8 elements, the value of each element is between 1 and 15, the second timing parameter set comprises 8 elements, and the value of each element is between 16 and 32. Thus, as shown in fig. 4, the first channel corresponding target timing parameter set in the first interval is the first timing parameter set, and the first channel corresponding target timing parameter set in the second interval is the second timing parameter set. The terminal device may determine a target timing parameter set corresponding to the first channel according to which interval the first channel is in.
A first field in the PDCCH indicates that the time difference between the PDSCH and its HARQ-ACK feedback time is one element in the target set of timing parameters. I.e. the first field in the PDCCH scheduling the first channel in the first interval indicates one value of 8 elements in the first set of timing parameters and the first field in the PDCCH scheduling the first channel in the second interval indicates one value of 8 elements in the second set of timing parameters. The impact on HARQ-ACK feedback flexibility and system efficiency can be avoided.
Correspondingly, the corresponding relationship between the target timing parameter set and the first channel in step 103 is preset according to the time domain position of the first channel, and the TDD system may adopt the following manner:
if the TDD system supports different uplink and downlink allocations for two consecutive periods, the semi-static uplink and downlink configuration information of two cell levels can be concatenated. The network device may configure the terminal device with the timing parameter sets corresponding to the two periods, respectively, or configure which of the timing parameter set groups the timing parameter sets corresponding to the two periods are.
Similarly, assuming that the first channel is a PDCCH and the second channel is a PUSCH scheduled by the PDCCH, if the time of the continuous downlink time slot in the DL: GP: UL ratio is long, the value range of the timing difference between the current PDCCH and the PUSCH cannot meet the requirement of scheduling the PUSCH in the partial DL time slot. If the range supported by the timing parameter set is directly expanded, and the length of a field used for indicating the timing difference between the PDCCH and the PUSCH in the DCI of the PDCCH is kept unchanged, the flexibility of the PDCCH for scheduling the PUSCH is poor, and the system efficiency is influenced. According to the method of the embodiment, the terminal device obtains a timing parameter set group, where the timing parameter set group includes at least two timing parameter sets and is used to provide an alternative value of a timing difference between a first channel and a second channel, where the first channel is a PDCCH and the second channel is a PUSCH scheduled by the first channel.
Fig. 5 is a diagram of multiple sets of timing parameters for different slot parameters.
Example 2: the reference information is a set of OFDM parameters corresponding to the second channel.
The time difference between the PDSCH and the PUCCH from which the HARQ-ACK information is fed back is based on the slot length or subcarrier spacing of the PUCCH, the time difference between the PDCCH and the scheduled PDSCH/PUSCH is based on the slot length or subcarrier spacing of the PDSCH/PUSCH, a timing parameter set corresponding to a specific OFDM parameter set is in the timing parameter set group, and the terminal device may determine a target timing parameter set according to a correspondence between the OFDM parameter set corresponding to the second channel and each timing parameter set in the timing parameter set group. According to the method of the embodiment, the terminal device obtains a timing parameter set group, where the timing parameter set group includes at least two timing parameter sets, and is used to provide an alternative value of a timing difference between a first channel and a second channel, where the first channel is a PDSCH, and the second channel is a PUCCH for feeding back HARQ-ACK information of the first channel. Or, the first channel is a PDCCH and the second channel is a PDSCH/PUSCH scheduled by the first channel.
As shown in fig. 5, assuming that the PDSCH is used as the second channel when the PDCCH schedules the PDSCH, the set of OFDM symbol parameters for the PDSCH is different, and the set of timing parameters between the PDCCH and the scheduled PDSCH is different. The reference channels corresponding to different subcarrier intervals (15KHz, 30KHz and 60KHz) have different values of elements in the timing parameter sets. As shown in fig. 5, for example, when the OFDM parameter sets used by the second channel respectively correspond to subcarrier intervals of (15KHz, 30KHz, 60KHz), according to the prior art, if the value range of the timing parameter set is kept between 0 to 16, when the subcarrier intervals used by the second channel are 15KHz, the value range of the timing difference set is 0 to 16 τ1When the second channel uses the subcarrier interval of 30KHz, the value range of the timing difference set is 0-16 tau2When the second channel uses the subcarrier interval of 60KHz, the value range of the timing difference set is 0-16τ3。τ1、τ2、τ3Respectively, the lengths of time units corresponding to subcarrier intervals of 15KHz, 30KHz, and 60 KHz. If the second channel of various OFDM parameters uses the same set of timing differences, the range of absolute times for which the timing differences between the first channel and the second channel correspond is different. If different OFDM parameters are considered in a compromise manner to set the timing difference set, for example, the timing difference set is set according to the OFDM parameters with the subcarrier spacing of 30KHz, for the OFDM parameters with the subcarrier spacing of 15KHz, the absolute time range of the timing parameter set supporting indication may be too long, the overlarge timing difference between the first channel and the second channel may be rarely used, the indication efficiency of the timing parameters is affected, and further the efficiency of the system is affected. For the OFDM parameter with subcarrier spacing of 60KHz, the absolute time range for which the timing difference set supports indication may be too short, and the timing difference between the too small first channel and second channel may not meet the actual timing difference requirement, or even the processing capability requirement of the device, which also affects the efficiency of the system. By adopting the implementation mode of the invention, different OFDM parameters of the second channel correspond to different timing parameter sets and are respectively suitable for the timing difference requirements of the OFDM parameters, for example, the subcarrier spacing is 15KHz, 30KHz and 60KHz, and the value ranges of each element in the timing difference set are respectively 0-N3,0～N2,0～N1In which N is1＞N2＞N3Flexibility in timing difference between the first channel and the second channel can be ensured. According to the method of the embodiment, the terminal device obtains a timing parameter set group, where the timing parameter set group includes at least two timing parameter sets and is used to represent alternative values of timing parameters between a first channel and a second channel, where the first channel is a PDCCH, and the second channel is a PDSCH/PUSCH scheduled by the first channel.
Fig. 6 is a flowchart of an embodiment of the method of the present application for a network device.
Step 201, the network device sends configuration information. The configuration information is used for determining at least 2 timing parameter sets; the timing parameters are alternative values representing timing differences between the first channel and the second channel, and each timing parameter corresponds to the absolute duration of one timing difference; the at least 2 sets of timing parameters each corresponding to a different value of reference information, the reference information comprising a position of the first channel and or OFDM parameters of a second channel;
according to the method of the embodiment, the network device determines and transmits the configuration information. A set of timing parameter sets is determined, the set of timing parameter sets comprising at least two sets of timing parameters representing alternative values of a timing difference between the first channel and the second channel.
The first channel is the PDCCH, and the second channel is the PUSCH/PDSCH; or, the first channel is the PDSCH, and the second channel is used for feedback HARQ-ACK.
The network device may determine a timing parameter set group through higher layer signaling, the timing parameter set group including at least two timing parameter sets.
Alternatively, the network device may determine the timing parameter set group according to a preset manner. For example: and presetting a corresponding timing parameter set between the network equipment and the terminal equipment aiming at a reference channel of a specific OFDM parameter set. Each set of timing parameters may correspond to 1 or more sets of OFDM parameters, but each set of OFDM parameters corresponds to 1 set of timing parameters.
Step 202, the network equipment sends a PDCCH, wherein the PDCCH is used for scheduling the PDCCH/PDSCH;
the PDCCH transmitted by the network device is determined by the search space configuration and the CORESET configuration, where the network device transmits the PDCCH for scheduling the PDSCH or for scheduling the PUSCH.
Step 203, determining a target timing parameter set in the timing parameter set group according to reference information, where the reference information includes at least one of: the time position of the first channel and the OFDM parameter set corresponding to the second channel;
the network device determines reference information (the position of the first channel and/or the OFDM parameters of the second channel), and selects 1 timing parameter set from the at least 2 timing parameter sets according to the reference information as a target timing parameter set.
Step 204, further selecting target timing parameters from the target timing parameter set;
further preferably, the network device selects a target timing parameter set according to a preset timing difference threshold value between the first channel and the second channel, and/or further selects a target timing parameter in the target timing parameter set.
If there is only one element in the selected set of target timing parameters, the timing difference between the first channel and said second channel is determined by this element. When a plurality of timing parameters are included in the selected target set of timing parameters, first indication information may be defined for indicating a position of the target timing parameter in the selected target set of timing parameters. The first indication information is included in downlink control information.
Step 205, determining a timing difference between the first channel and the second channel, and receiving the second channel.
Fig. 7 is a flowchart of an embodiment of the method of the present application for a terminal device.
Step 301, a terminal device receives configuration information, where the configuration information is used to determine at least 2 timing parameter sets; the timing parameter is an alternative value representing a timing difference between the first channel and the second channel; the at least 2 sets of timing parameters each corresponding to different reference information, the reference information comprising a position of the first channel and/or OFDM parameters of a second channel;
according to the method of the embodiment, the terminal device determines the timing parameter set group:
the terminal device may determine the timing parameter set group according to a preset manner. For example: and presetting a corresponding timing parameter set between the network equipment and the terminal equipment aiming at a reference channel of a specific OFDM parameter set. Each set of timing parameters may correspond to 1 or more sets of OFDM parameters, but each set of OFDM parameters corresponds to 1 set of timing parameters.
Or, the terminal device may also determine a timing parameter set group through a high-level signaling and downlink control information, where the timing parameter set group includes at least 2 timing parameter sets. Terminal device accessible acquisitionThe configuration information of the network device determines a set of timing parameter sets, the set of timing parameter sets comprising at least two sets of timing parameters. For example, the set of timing parameter sets includes two sets of timing parameters t11，t12，...，t1mAnd t21，t22，...，t2nAt least one element of the two timing parameter sets is not equal. The at least two sets of timing parameters represent alternative values of a timing difference between the first channel and the second channel.
Step 302, the terminal equipment acquires a PDCCH, wherein the PDCCH is used for scheduling a PDSCH/PUSCH;
and the terminal equipment (UE) detects the PDCCH blindly according to the PDCCH search space configuration and the CORESET configuration, wherein the terminal equipment acquires the PDCCH, and the PDCCH is used for scheduling the PDSCH or used for scheduling the PUSCH.
Step 303, the terminal device selects a timing parameter set from the timing parameter set group according to reference information, where the reference information includes at least one of the following items: the time position of the first channel and the OFDM parameter set corresponding to the second channel;
and the terminal equipment selects 1 timing parameter set from the at least 2 timing parameter sets as a target timing parameter set according to the position of the first channel and/or the OFDM parameter of the second channel.
Step 304, the terminal device further determines a target timing parameter in the target timing parameter set;
if there is only one element in the target set of timing parameters, the timing difference between the first channel and said second channel is determined by this element.
When the target timing parameter set includes a plurality of timing parameters, the terminal device may select the target timing parameter set according to a preset timing difference threshold value between the first channel and the second channel, and/or further select the target timing parameter in the target timing parameter set. For example, the target timing parameter may be determined in the target timing parameter set according to indication information in the downlink control channel.
Step 305, determining a timing difference between the first channel and the second channel, and sending the second channel.
Fig. 8 is a schematic diagram of an embodiment of a network device.
An embodiment of the present application further provides a network device, where, using the method according to any one of the embodiments of the present application, the network device is configured to: determining and sending the configuration information; determining reference information (position of the first channel and/or OFDM parameters of the second channel), and selecting 1 target timing parameter set from the at least 2 timing parameter sets according to the reference information.
In order to implement the foregoing technical solution, the network device 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.
And the network sending module is used for sending the configuration information, the PDCCH and the PDSCH.
The network determining module is used for determining a timing parameter set group; further, determining the configuration information; further, determining reference information; further, the network determination module is further configured to select a target set of timing parameters; further, the method is also used for selecting target timing parameters; further, the method is also used for determining the first indication information; therefore, the network determining module determines the timing difference between the first channel and the second channel according to at least one of the first channel position, the first indication information, and the time unit length of the cell in which the second channel is located.
And the network receiving module is used for receiving uplink data. The network receiving module is further configured to receive the higher layer signaling (i.e., semi-static configuration signaling RRC).
The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods shown in fig. 1 to 4, and will not be described herein again.
Fig. 9 is a schematic diagram of an embodiment of a terminal device.
The application further provides a terminal device, which determines the at least 2 timing parameter sets according to the configuration information by using the method of any embodiment of the application; and the timing control module is further configured to determine a target timing parameter set according to reference information (a position of the first channel and/or OFDM parameters of the second channel), a correspondence between the at least 2 timing parameter sets and the reference information.
In order to implement the foregoing technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.
The terminal receiving module is configured to receive the downlink control channel and identify the first indication information; the terminal receiving module is further configured to receive the high-level signaling (i.e., semi-static configuration signaling RRC) and the PDCCH, and further identify the configuration information.
The terminal determining module is used for determining a timing parameter set group; further, the terminal determining module is further configured to select a target timing parameter set; further, the method is also used for selecting target timing parameters; further, the terminal determining module is further configured to determine the timing difference between the first channel and the second channel according to at least one of the time location of the first channel, the first indication information, and the time unit length of the cell in which the second channel is located.
And the terminal sending module is used for sending the PUSCH and the PUCCH and comprises the HARQ-ACK information.
The specific method for implementing the functions of the terminal sending module, the terminal determining module and the terminal receiving module is described in the embodiments of the methods shown in fig. 1 to 4 of the present application, and is not described herein again.
The terminal equipment can be mobile terminal equipment.
Fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, the network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface implements a communication function with the terminal device, and processes wireless signals through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program that executes any of the embodiments of the present application, running or changed on the processor 601. When the memory, processor, wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.
Fig. 11 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 shown comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.
The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.
The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.
In the embodiment of the present invention, the memory 702 contains a computer program for executing any of the embodiments of the present application, and the computer program runs or changes on the processor 701.
The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above-described method. In particular, the computer-readable storage medium has stored thereon a computer program which, when being executed by the processor 701, carries out the steps of the method embodiments as described above with reference to any of the embodiments.
The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processor 701 or by instructions in the form of software. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.
Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the memory 603, 702 of the present invention may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM).
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
Based on the embodiments of fig. 1 to 11, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (19)

1. A HARQ-ACK feedback method is characterized in that,
for configuring the timing difference of the first channel and the second channel, the configuration information is used for determining at least 2 timing parameter sets; the timing parameter is an alternative value representing a timing difference between the first channel and the second channel; the at least 2 sets of timing parameters each correspond to a different value of reference information, the reference information comprising a position of the first channel and or OFDM parameters of a second channel.
2. The method of claim 1,
the first channel is a PDCCH, and the second channel is a PDSCH or a PUSCH scheduled by the first channel;
alternatively, the first and second electrodes may be,
the first channel is a PDSCH and the second channel is a HARQ-ACK acknowledged thereto.
3. The method of claim 1 or 2,
the configuration information comprises the at least 2 timing parameter sets and a correspondence between each of the at least 2 timing parameter sets and the reference information.
4. The method according to any one of claims 1 to 3,
determining a target timing parameter set according to the corresponding relation between the at least 2 timing parameter sets and the reference information:
the reference information is a location of the first channel; the corresponding relation comprises that the time difference between the time unit of the first channel and the target time unit is in an interval [ D ]1，D2]When not, the target set of timing parameters is a first set of timing parameters; the time difference between the time unit of the first channel and the target time unit is in an interval [ D ]3，D4]When the target timing parameter set is a second timing parameter set, wherein D3＞D2The values of the elements in the second timing parameter set are greater than the values of the elements in the first timing parameter set;
the target time unit is the earliest time unit available for the second channel after the first channel.
5. The method of claim 4,
the time difference between the time unit of the first channel and the target time unit takes the time unit length of the second channel as granularity, and is the product of the time unit length of the second channel and the timing parameter.
6. The method of claim 4 or 5,
indicating a position of a target timing parameter in the set of target timing parameters by a first indication information, the first indication information field comprising N bits, the at least 2 sets of timing parameters comprising M elements in total, wherein,
Figure FDA0002529772720000021
7. the method according to any one of claims 1 to 3,
determining a target timing parameter set according to the corresponding relation between the at least 2 timing parameter sets and the reference information:
the reference information is the time unit length corresponding to the OFDM parameter of the second channel; the corresponding relation includes that the length of the time unit corresponding to the second channel is [ T ]1，T2]When not, the target set of timing parameters is a first set of timing parameters; the length of the time unit corresponding to the second channel is [ T ]3，T4]The target set of timing parameters is a second set of timing parameters, where T1＞T4，T2≥T1，T4≥T3And the values of the elements in the second timing parameter set are greater than the values of the elements in the first timing parameter set.
8. The method according to any one of claims 1 to 3,
the configuration information includes a basic timing parameter set and at least 2 coefficients, and the correspondence includes: the at least 2 timing parameter sets are respectively determined by products of the at least 2 coefficients and a base timing parameter set;
and determining a target coefficient in the 2 coefficients according to the OFDM parameters of the second channel, and determining a target timing parameter set according to the product of the target coefficient and the basic timing parameter set.
9. The method according to any of claims 1 to 8, for a network device,
and the network equipment determines and sends the configuration information.
10. The method of claim 9,
the network device determines reference information, determines the target timing parameter set from the at least 2 timing parameter sets according to the reference information, and determines a target timing parameter from the target timing parameter set.
11. The method of claim 9,
the network equipment selects a target timing parameter set according to a preset timing difference threshold value of a first channel and a second channel, and/or selects a target timing parameter from the target timing parameter set.
12. The method according to any of claims 1 to 8, for a terminal device,
the terminal equipment determines the at least 2 timing parameter sets according to configuration information;
and determining a target timing parameter set according to the corresponding relation among the reference information, the at least 2 timing parameter sets and the reference information.
13. The method of claim 12,
and the terminal equipment determines a target timing parameter in the target timing parameter set according to the first indication information in the downlink control channel.
14. A network device for use in the method of any one of claims 1 to 8,
the network equipment determines and sends the configuration information;
determining reference information, and determining the target timing parameter set in the at least 2 timing difference sets according to the reference information;
determining a target timing parameter in the set of target timing parameters.
15. A network device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program when executed by the processor implements the steps of the method according to any one of claims 1 to 11.
16. A terminal device for use in the method of any one of claims 1 to 8,
the terminal equipment determines the at least 2 timing parameter sets according to configuration information;
determining a target timing parameter set according to the corresponding relation among the reference information, the at least 2 timing parameter sets and the reference information;
determining a target timing parameter in the set of target timing parameters.
17. A terminal device, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the method according to any one of claims 1 to 8, 12 to 13.
18. A mobile communication system comprising at least one network device according to any of claims 14 to 15 and at least one terminal device according to any of claims 16 to 17.
19. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 13.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216620A1 (en) * 2018-05-10 2019-11-14 Samsung Electronics Co., Ltd. Method and device for transmitting uplink control information
CN111147192A (en) * 2018-11-02 2020-05-12 中国信息通信研究院 Timing determination method of HARQ-ACK information and network terminal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216620A1 (en) * 2018-05-10 2019-11-14 Samsung Electronics Co., Ltd. Method and device for transmitting uplink control information
CN111147192A (en) * 2018-11-02 2020-05-12 中国信息通信研究院 Timing determination method of HARQ-ACK information and network terminal

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