CN110943799B

CN110943799B - Communication method and device

Info

Publication number: CN110943799B
Application number: CN201811110587.6A
Authority: CN
Inventors: 马蕊香; 李胜钰; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-21
Filing date: 2018-09-21
Publication date: 2021-08-13
Anticipated expiration: 2038-09-21
Also published as: CN110943799A; WO2020057649A1

Abstract

The application discloses a communication method and a device, and the method can comprise the following steps: the method comprises the steps that a first set is determined by terminal equipment in a plurality of sets, the length of a time unit corresponding to the first set is determined by the terminal equipment, the terminal equipment receives a physical downlink data channel from network equipment, and the terminal equipment sends response information of the physical downlink data channel to the network equipment according to the length of the time unit corresponding to the first set and the length of the time unit corresponding to the first set. By adopting the method and the device, different requirements among various services in dynamic scheduling can be met.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

In the existing communication process, after receiving a Physical Downlink Shared Channel (PDSCH), a terminal device feeds back a hybrid automatic repeat reQuest (HARQ) according to a decoding result of the PDSCH. For example, if the PDSCH reception is successful, an Acknowledgement (ACK) may be fed back to the network device, and if the PDSCH reception is failed, a Negative Acknowledgement (NACK) may be fed back to the network device. Wherein, in the prior art, the length of the time unit is 1 time slot. When the length of the time unit becomes smaller, for example, 1/2 time slots, there is no corresponding solution for how to feed back the response information.

Disclosure of Invention

The application provides a communication method and a communication device, and provides a scheme for feeding back response information by terminal equipment.

In a first aspect, the present application provides a communication method, which is applicable to a terminal device, and the communication method may include: the method comprises the steps that a terminal device determines a first set in a plurality of sets, the lengths of time units corresponding to any two sets in the plurality of sets are different, each set in the plurality of sets comprises one or more K1 values, the K1 value refers to the number of time units of an interval from the time when the terminal device receives a physical downlink data channel to the time when response information of the physical downlink data channel is fed back, the K1 is a non-negative integer, the terminal device determines the length of the time unit corresponding to the first set, the terminal device receives the physical downlink data channel from a network device, and the terminal device sends the response information of the physical downlink data channel to the network device according to the lengths of the time units corresponding to the first set and the first set.

In the embodiment of the application, by configuring the plurality of sets, the lengths of the time units corresponding to at least two of the plurality of sets are different, and the requirements of different services can be met. And DCI information dynamically indicates which set is currently adopted, so that dynamic switching among a plurality of sets can be realized, and different requirements among a plurality of services for dynamic scheduling are met.

In one possible implementation, the determining, by the terminal device, a first set among a plurality of sets includes: the terminal equipment receives first indication information from network equipment; and the terminal equipment determines the first set in the plurality of sets according to the first indication information.

In the embodiment of the present application, different time unit lengths can be indicated for the first set by the first indication information, so as to meet the requirements of different services. For example, a smaller time unit length may be used in some services to ensure the time delay of the services, and a larger time unit length may be used in some services to ensure that ACK/NACK information of multiple data is fed back together, thereby reducing signaling overhead and improving resource utilization.

In a possible implementation, the determining, by the terminal device, the first set in the plurality of sets according to the first indication information is performed by using downlink control information DCI, and the determining, by the terminal device, the first set includes: the terminal equipment determines the first set in the plurality of sets according to a bit field in the DCI; or, the terminal device determines the first set from the plurality of sets according to the format of the DCI; or, the terminal device determines the first set from the multiple sets according to a mapping manner of a physical downlink data channel indicated by the DCI; or, the terminal device determines the first set in the plurality of sets according to the number of symbols of the time domain resource occupied by the physical downlink data channel indicated by the DCI.

In one possible implementation, the determining, by the terminal device, the length of the time unit corresponding to the first set includes: the terminal equipment receives second indication information from the network equipment; and the terminal equipment determines the length of the time unit corresponding to the first set according to the second indication information.

In a possible implementation, the determining, by the terminal device, the length of the time unit corresponding to the first set according to the second indication information includes: the terminal equipment determines the length of the time unit corresponding to the first set according to the bit field in the DCI; or, the terminal device determines the length of the time unit corresponding to the first set according to the format of the DCI; or, the terminal device determines the length of the time unit corresponding to the first set according to the mapping mode of the physical downlink data channel indicated by the DCI; or, the terminal device determines the length of the time unit corresponding to the first set according to the number of symbols of the time domain resource occupied by the physical downlink data channel indicated by the DCI.

In one possible implementation, the determining, by the terminal device, the length of the time unit corresponding to the first set includes: and the terminal equipment determines the length of the time unit corresponding to the first set according to the corresponding relation between the first set and the length of the time unit.

In one possible implementation, the determining, by the terminal device, a first set among a plurality of sets includes: and when the terminal equipment receives third indication information from the network equipment, determining the first set in the plurality of sets according to the third indication information.

In one possible implementation, the method further comprises: and when the terminal equipment does not receive the third indication information from the network equipment, taking a set of K1 specified by a protocol as the first set.

In one possible implementation, the determining, by the terminal device, the length of the time unit corresponding to the first set includes: and when the terminal equipment receives fourth indication information from the network equipment, determining the length of the time unit corresponding to the first set according to the fourth indication information.

In one possible implementation, the method further comprises: and when the terminal equipment does not receive the fourth indication information from the network equipment, taking the K1 set time length specified by the protocol as the length of the time unit corresponding to the first set.

In a second aspect, the present application discloses a communication method, applicable to a network device, including: the method comprises the steps that a network device sends a physical downlink data channel to a terminal device, the network device receives response information of the physical downlink data channel sent by the terminal device, the response information of the physical downlink data channel is determined according to a first set and the length of a time unit corresponding to the first set, the first set is one of a plurality of sets, the length of the time unit corresponding to any two of the sets is different, each set of the sets comprises one or more K1 values, the K1 value refers to the number of time units of an interval from the time when the terminal device receives the physical downlink data channel to the time when the response information of the physical downlink data channel is fed back, and K1 is a non-negative integer.

In one possible implementation, the method further comprises: the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the first set in the plurality of sets.

In a possible implementation, the first indication information is DCI, a bit field of the DCI is used to determine the first set in the sets, or a format of the DCI is used to determine the first set in the sets, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine the first set in the sets, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the first set in the sets.

In one possible implementation, the method further comprises: and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the length of the time unit corresponding to the first set.

In a possible implementation, the second indication information is DCI, where a bit field in the DCI is used to determine a length of a time unit corresponding to the first set, or a format of the DCI is used to determine a length of a time unit corresponding to the first set, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the length of the time unit corresponding to the first set.

In a third aspect, the present application discloses a communication method, which is applicable to a terminal device and may include: a terminal device determines a first set, wherein the first set includes one or more values of K1, the value of K1 refers to the number of time units between the time when the terminal device receives a physical downlink data channel and the time when response information of the physical downlink data channel is fed back, the value of K1 is a non-negative integer, if any one of the sets includes multiple values of K1, the minimum value of K1 in any one set is greater than or equal to a first threshold, and if any one of the sets includes one value of K1, the value of K1 is greater than or equal to the first threshold, and the size of the first threshold is related to the length of the time unit corresponding to the any one set; the terminal equipment determines the length of the time unit corresponding to the first set, receives a physical downlink data channel from network equipment, and sends response information of the physical downlink data channel to the network equipment according to the length of the time unit corresponding to the first set and the first set.

In a possible implementation, the size of the first threshold is related to the length of the time unit corresponding to the any set, specifically:

the first threshold is

Said N1 representsThe terminal equipment receives a physical downlink data channel and feeds back the number of symbols of the interval between response messages of the physical downlink data channel, wherein M represents the length of a time unit corresponding to any set, and M represents the length of the time unit corresponding to any set

Indicating a round-up operation.

In one possible implementation, the determining, by the terminal device, the first set includes: the terminal equipment receives first indication information from the terminal equipment; and the terminal equipment determines the first set according to the first indication information.

In a possible implementation, the second indication information is indicated as a higher layer signaling or a downlink control information DCI;

if the second indication information is DCI, the terminal device determines, according to the second indication information, a length of a time unit corresponding to the first set, including: the terminal equipment determines the length of the time unit corresponding to the first set according to the bit field in the DCI; or, the terminal device determines the length of the time unit corresponding to the first set according to the format of the DCI; or, the terminal device determines the length of the time unit corresponding to the first set according to the mapping mode of the physical downlink data channel indicated by the DCI; or, the terminal device determines the length of the time unit corresponding to the first set according to the number of symbols of the time domain resource occupied by the physical downlink data channel indicated by the DCI.

In one possible implementation, the determining, by the terminal device, the first set includes: and when the terminal equipment receives third indication information from the network equipment, determining the first set according to the third indication information.

In a fourth aspect, a communication method is disclosed, which is applicable to a network device and may include: a network device sends a physical downlink data channel to a terminal device, the network device receives response information of the physical downlink data channel from the terminal device, the response information of the physical downlink data channel is determined according to a first set and the length of a time unit corresponding to the first set, the first set is one of a plurality of sets, the first set includes one or more K1 values, the K1 value refers to the number of time units between the time when the terminal device receives the physical downlink data channel and the time when the response information of the physical downlink data channel is fed back, the K1 is a non-negative integer, if any one of the plurality of sets includes a plurality of K1 values, the minimum K1 value in any one set is greater than or equal to a first threshold, if any one of the plurality of sets includes a K1 value, the K1 value is greater than or equal to the first threshold, the size of the first threshold is related to the length of the time unit corresponding to any set.

In a possible implementation, the size of the first threshold is related to the length of the time unit corresponding to the any set, specifically: the first threshold is

N1 represents the number of symbols between the receiving of the physical downlink data channel and the feedback of the response information of the physical downlink data channel, M represents the length of the time unit corresponding to any set, and M represents the length of the time unit corresponding to any set

Indicating a round-up operation.

In one possible implementation, the method further comprises: and the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the first set.

In a possible implementation, the second indication information is a higher layer signaling, or the second indication information is downlink control information DCI, where a bit field in the DCI is used to determine a length of a time unit corresponding to the first set, or a format of the DCI is used to determine a length of a time unit corresponding to the first set, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set, or a number of symbols of time domain resources occupied by the physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set.

In a fifth aspect, the present application provides a communication apparatus for a terminal device or a chip of the terminal device, including: comprising means or units for performing the steps of the above first or third aspect.

In a sixth aspect, the present application provides a communication apparatus for a network device or a chip of the network device, including: comprising means or units for performing the steps of the above second or fourth aspect.

In a seventh aspect, the present application provides a communication apparatus, configured to be used in a terminal device or a chip of a terminal device, and including at least one processing element and at least one storage element, where the at least one storage element is configured to store a program and data, and the at least one processing element is configured to execute the method provided in the first aspect or the third aspect of the present application.

In an eighth aspect, the present application provides a communication apparatus, for a network device or a chip of a network device, including at least one processing element and at least one memory element, where the at least one memory element is used for storing programs and data, and the at least one processing element is used for executing the method provided in the second aspect or the fourth aspect of the present application.

In a ninth aspect, the present application provides a communication apparatus for a terminal device comprising at least one processing element (or chip) for performing the method of the above first or third aspect.

In a tenth aspect, the present application provides a communication apparatus for a network device, comprising at least one processing element (or chip) for performing the method of the second or fourth aspect above.

In an eleventh aspect, the present application provides a computer program product comprising computer instructions which, when executed by a computer, cause the computer to perform the method of any of the above aspects.

In a twelfth aspect, the present application provides a computer-readable storage medium storing computer instructions that, when executed by a computer, cause the computer to perform the method of any of the above aspects.

Drawings

Fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a relationship between response information and downlink data provided in the embodiment of the present application;

fig. 3 is a schematic diagram of a flow of a communication method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a flow of a communication method according to an embodiment of the present application;

fig. 5 is a schematic diagram of a flow of a communication method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

As shown in fig. 1, an embodiment of the present application provides a communication system 100, and the communication system 100 may include a network device 101 and a terminal device 102.

The communication system 100 may employ various Radio Access Technologies (RATs), such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), etc., and the RAT employed in the communication system is not limited in this application. In this application, the term "system" may be used interchangeably with "network".

Network device 101 may be a device in a network that accesses a terminal device to the wireless network. The network device is a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). Currently, some examples of network devices are: a gNB, a Transmission Reception Point (TRP), an evolved Node B (eNB), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a WiFi Access Point (AP), etc. In addition, in a network structure, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.

A terminal device 102, also referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, such as a handheld device with wireless connection capability, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), and the like.

In this embodiment, the network device 101 may send a Physical Downlink Shared Channel (PDSCH) to the terminal device 102, and the terminal device 102 may feed back a hybrid automatic repeat reQuest (HARQ) according to a decoding result of the PDSCH. For example, if the PDSCH reception is successful, an Acknowledgement (ACK) may be fed back to the network device 101, and if the PDSCH reception is failed, a Negative Acknowledgement (NACK) may be fed back to the network device 101.

Wherein, the timing relationship from the receiving of the PDSCH by the terminal device 102 to the feedback of the ACK/NACK to the network device 101 satisfies n + k1, where n represents the time unit of the PDSCH reception by the terminal device 102, and k1 represents the time unit of the phase difference between the time unit of the PDSCH reception by the terminal device 102 and the time unit of the ACK/NACK feedback. As shown in fig. 2, terminal device 102 receives PDSCH in nth slot (slot), and if k1 is 4, terminal device 102 may feed back ACK/NACK to network device 101 in n +4 th slot. There will be a set of k1 on the side of the terminal device 102, where the set of k1 includes one or more k1 values, for example, the set of k1 may be {1, 2, 3, 4, 5, 6, 7, 8 }. The set of k1 may be protocol specific or configured through higher layer signaling. The network device 101 may indicate the k1 value in the k1 set to the terminal device 102 through Downlink Control Information (DCI), and the terminal device 102 may feed back ACK/NACK according to the indicated k1 value. Currently, the k1 values in the set of k1 are all at slot (slot) granularity.

The terminal device 102 needs a certain processing time from receiving the PDSCH to feeding back the ACK/NACK response information, and the number of time domain symbols between the time when the terminal device 102 receives the PDSCH and the earliest time when the terminal device can send the ACK/NACK feedback information is defined as N1. The value of N1 is different under different subcarrier spacing (SCS), for example, when the SCS is 15KHz, the value of N1 may be 8 symbols.

In one implementation, in order to reduce the feedback delay of the user, the following solution is proposed: the length of the k1 time unit is reduced, and the granularity of k1 is reduced, for example, the granularity of k1 is changed to 1/2 time slots, i.e., 7 symbols, and the like. If the set of k1 with slot granularity is continued, it may happen that the N1 requirement is not met. For example, the following steps are carried out: the k1 set is {1, 2, 3, 4, 5, 6, 7, 8}, the granularity of the k1 set is 1slot, and N1 is 8 symbols, if the network device 101 indicates through DCI that the current k1 value is 1, then the terminal device 102 may feed back ACK/NACK in the (N + 1) th slot, and 1slot includes 14 symbols, that is, the terminal device 102 feeds back ACK/NACK in the (N + 14) th slot, which can meet the requirement that the terminal device can only feed back ACK/NACK in the (N + 8) th symbol at the earliest. If the granularity of k1 is modified to 1/2 slots, i.e. 7 symbols, and if the network device 101 indicates through DCI that the current k1 value is 1, then the terminal device 102 will feed back ACK/NACK on the +7 symbol of the nth slot, which cannot meet the requirement that the terminal device 102 feed back ACK/NACK on the +8 symbol of the nth slot earliest.

Based on the above, the present application provides flowcharts of three communication methods, which can be specifically shown in fig. 3, fig. 4, or fig. 5. In the flow shown in fig. 3, a plurality of sets may be configured for the terminal device, and in the flow shown in fig. 4 or fig. 5, one set, that is, the first set, may be configured for the terminal device. In the flows shown in fig. 3, fig. 4, or fig. 5, the network device may be the network device 101 shown in fig. 1, and the terminal device may be the terminal device 102 shown in fig. 1. It is understood that, in the embodiment of the present application, the function of the network device may also be implemented by a chip applied to the network device, and the function of the terminal device may also be implemented by a chip applied to the terminal device. It is to be understood that the terms "first," "second," and the like in the description of the present application are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor order.

As shown in fig. 3, the process may specifically be:

s301: the terminal device determines a first set among the plurality of sets.

In this embodiment of the present application, the multiple sets may be configured for the terminal device by the network device through a high-level signaling in advance, or the multiple sets may be specified by the protocol, or a part of the multiple sets is configured for the terminal device by the network device through the high-level signaling, and the remaining part of the multiple sets is specified by the protocol. The high layer signaling may specifically refer to signaling sent by a high layer protocol layer, and the high layer protocol layer may be a protocol layer above a physical layer. For example, the higher layer protocol layer may include a Medium Access Control (MAC) layer, a Radio Link Control (RLC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Resource Control (RRC) layer, a non-access stratum (NAS) layer, and the like, and the higher layer signaling may be RRC signaling or MAC signaling.

In this embodiment, the plurality of sets may include two or more sets, each of the plurality of sets may also be referred to as a K1 set, each of the plurality of sets may include one or more K1 values, the K1 value refers to the number of time units of an interval between when the terminal device receives the PDSCH and when the terminal device feeds back the acknowledgement information of the PDSCH, and the K1 is a non-negative integer. As shown in fig. 2, the terminal device receives the PDSCH in the nth time slot, K1 takes a value of 4, and the terminal device may feed back the response information of the PDSCH in the (n + 4) th time slot.

In this embodiment of the present application, lengths of time units corresponding to any two sets in the multiple sets are different, and a length of a time unit corresponding to each set in the multiple sets may also be referred to as a time unit granularity corresponding to each set. For example, when the set is referred to as a K1 set, the time unit length corresponding to the set may be referred to as a K1 granularity.

In an embodiment of the present application, if a plurality of K1 values are included in any of the plurality of sets, a minimum K1 value in the any set is greater than or equal to a first threshold. If a value of K1 is included in any of the plurality of sets, the value of K1 is greater than or equal to the first threshold.

The size of the first threshold is related to the length of the time unit corresponding to the any set, and specifically may be:

the first threshold is

The N1 represents the symbol number of the interval from the receiving PDSCH to the earliest feedback PDSCH response information of the terminal equipment, the M represents the length of the time unit corresponding to any set, and the M represents the length of the time unit corresponding to any set

Indicating a round-up operation.

For example, in this embodiment of the present application, a value of N1 is 8 symbols, a value of M is 7 symbols, and a value of the first threshold may be 2.

In the embodiment of the present application, the value of N1 may satisfy the following table 1 or table 2:

TABLE 1

TABLE 2

In the table 1 or the table 2, the DMRS is a demodulation reference signal. The value of N1 may satisfy the limitations of other tables, and is not limited in this application.

In this embodiment, the network device may send first indication information to the terminal device, and the terminal device may determine the first set from the plurality of sets according to the first indication information. For example, the first indication information may be DCI, or may be other information besides DCI, and is not limited in this application. In the embodiment of the present application, the process of determining the first set is described in detail by taking the first indication information as DCI.

In an example of the present application, the terminal device may determine the first set among the plurality of sets according to a bit field in DCI, where the bit field of the DCI may include one bit (bit) or multiple bits.

For example, the multiple sets in step S301 may be two sets, i.e., set a and set B, respectively, and then 1bit may be used to indicate which set is specifically the same, for example, only 1bit is taken to indicate set a, and 0 bit is taken to indicate set B; for another example, the multiple sets in step S301 are 4 sets, which are set a, set B, set C, and set D, respectively, and then 2 bits may be used for indication, where a value of the 2 bits is "00" to indicate set a, a value of the 2 bits is "01" to indicate set B, a value of the 2 bits is "10" to indicate set C, and a value of the 2 bits is "11" to indicate set D.

In another example of the present application, the terminal device may determine the first set among the plurality of sets according to a format of DCI.

For example, the multi-set in step S301 may be two sets, i.e., set a and set B. The terminal device may determine that the first set may be set a if the format of DCI received by the terminal device is a first format, and may determine that the first set may be set B if the format of DCI received by the terminal device is a second format. For example, the first format may be a compressed DCI format, the second format is another format except the compressed DCI format, and the compressed DCI format is a DCI format with a smaller bit number and is mainly used for scheduling high reliability services. For another example, the first format may be a DCI format scrambled by a first Radio Network Temporary Identity (RNTI), and the second format may be a format other than the DCI format scrambled by the first RNTI, where the first RNTI is mainly used to identify a high-reliability low-latency service or a Modulation and Coding Scheme (MCS) table with higher reliability.

In the present application, the format of the DCI may include a payload size of the DCI, an RNTI, and/or definitions of various fields included in the DCI. DCI formats may be considered to be different because DCI payload sizes (payload sizes) are different; the scrambled RNTIs are different, and the formats of the DCI can be considered to be different; the definition of each field included in the DCI is different, and the format of the DCI may be considered to be different. The definition of a field herein may include where the field is located in DCI, the bit length of the field, and the specific meaning indicated by the field. The payload size here may be the total number of bits of each field in the DCI, or may be the total number of bits of each field in the DCI plus the length of the CRC.

In another example of the present application, the terminal device may determine the first set among the plurality of sets according to an indication field of DCI, where the indication field of DCI may be used to indicate one or more of a starting symbol of a PDSCH, a length of the PDSCH, or a mapping manner of the PDSCH.

Specifically, the terminal device may determine the first set from the multiple sets according to the mapping manner of the PDSCH indicated by the DCI. For example, the mapping scheme of the PDSCH indicated by the DCI is a, the first set may be determined to be set a, the mapping scheme of the PDSCH indicated by the DCI is B, and the first set may be determined to be set B.

Or, the terminal device may determine the first set among the multiple sets according to the number L of time domain symbols occupied by the PDSCH indicated by the DCI. For example, if L is greater than 7, the first set is set a, and if L is 2, 4, or 7, the first set is set B.

Alternatively, the terminal device may determine the first set among a plurality of sets according to a starting symbol S of the PDSCH indicated by the DCI. For example, S is less than or equal to 7, the first set is set a, or S is greater than 7, and the first set is set B.

S302: the terminal device determines the length of the time unit corresponding to the first set, which may also be referred to as the granularity of the K1 value included in the first set.

In an example of the present application, the terminal device may determine, according to a correspondence between the first set and the time unit length, the length of the time unit corresponding to the first set.

In one implementation, the protocol defines a respective time unit for each of the sets of K1 of the plurality of sets of K1. For example, for two sets of K1: the method comprises a set A and a set B, wherein the time unit length corresponding to the set A is slot, and the time unit length corresponding to the set B is 7 symbols. For example, according to the method in step S301, if the first set is determined to be set a, the time unit length corresponding to the first set is determined to be slot; for another example, if the first set is set B, the time unit length corresponding to the first set is determined to be 7 symbols.

In another example of the present application, the network device may send second indication information to the terminal device, and the terminal device may determine, according to the second indication information, a length of a time unit corresponding to the first set. The second indication information may be higher layer signaling or DCI.

In one implementation, the network device may send higher layer signaling to the terminal device, and the terminal device may determine the length of the time unit corresponding to the first set according to the higher layer signaling. For example, the higher layer signaling may configure a time unit length, and the configured time unit length may be a slot (slot), or 1/2 slots, or 2 symbols, etc., which are merely examples for understanding the technical solution of the present invention, and the present application includes but is not limited thereto. In the embodiment of the present application, the time slot may be a time domain unit of data scheduling. For example, under a normal cyclic prefix, one slot may include 14 symbols, and under an extended cyclic prefix, one slot may include 12 symbols.

In one implementation, the network device may send DCI to the terminal device, and the terminal device may determine, according to the DCI, a length of a time unit corresponding to the first set.

In an example, the terminal device may determine the length of the time unit corresponding to the first set according to a bit field in the DCI, for example, the DCI may have one bit field including 1bit, when a value of the bit field is 0, the length of the time unit corresponding to the first set is represented as 1/2slot, and when the value of the bit field is 1, the length of the time unit corresponding to the first set is represented as 1 slot. For another example, the DCI may have a bit field including 2 bits, and when the value of the bit field is 00, it indicates that the length of the time unit corresponding to the first set is slot; when the value of the bit field is 01, the length of the time unit corresponding to the first set is 1/2 slots; when the value of the bit field is 10, the length of the time unit corresponding to the first set is 2 symbols; when the value of the bit field is 11, it indicates that the length of the time unit corresponding to the first set is 1 symbol.

In an example, the terminal device may determine, according to the format of the DCI, a length of a time unit corresponding to the first set; for example, if the DCI format received by the terminal device is the first DCI format, the length of the time unit corresponding to the first set is 1/2 slots, and if the DCI format received by the terminal device is a DCI format other than the first DCI format, the length of the time unit corresponding to the first set is 1 slot. For another example, if the DCI format received by the terminal device is scrambled by the first RNTI, the length of the time unit corresponding to the first set is 1/2 slots, and if the DCI format is other DCI formats, the length of the time unit corresponding to the first set is determined to be 1 slot. For example, the first format may be a compressed DCI format, the second format is another format except the compressed DCI format, and the compressed DCI format is a DCI format with a smaller bit number and is mainly used for scheduling high reliability services. For another example, the first format may be a DCI format scrambled by a first Radio Network Temporary Identity (RNTI), and the second format may be a format other than the first RNTI scrambled DCI format, where the first RNTI is mainly used to identify a high-reliability low-latency service or a Modulation and Coding Scheme (MCS) table with higher reliability.

In an example, the terminal device may determine, according to a mapping manner of the PDSCH indicated by the DCI, a length of a time unit corresponding to the first set; for example, if the time domain resource mapping type (mapping type) of the PDSCH indicated in the DCI received by the terminal device is mapping type a (mapping type a), the length of the time unit corresponding to the first set is determined to be 1slot, and if the time domain resource mapping type is mapping type b (mapping type b), the length of the time unit corresponding to the first set is determined to be 1/2 slots.

In an example, the terminal device may determine the length of the time unit corresponding to the first set according to the number of symbols of the time domain resource occupied by the PDSCH indicated by the DCI. For example, if the number of symbols of the time domain resource location of the PDSCH indicated in the DCI received by the terminal device is L, if the number of symbols L is greater than 7, the length of the time cell corresponding to the first set may be determined to be 1slot, and if the number of symbols L is 2, 4, or 7, the length of the time cell corresponding to the first set may be determined to be 1/2 slots.

S303: the network device transmits the PDSCH.

S304: the terminal device receives the PDSCH.

S305: and the terminal equipment sends the response information of the PDSCH according to the length of the first set and the time unit corresponding to the first set.

In this embodiment of the present application, if the first set is {1, 2, 3, 4, 5, 6, 7, 8}, and the length of the time unit corresponding to the first set is 7 symbols, the terminal device receives the PDSCH in the nth slot. The network device may send DCI to the terminal device, where the DCI indicates a K1 value in the first set, e.g., the DCI indicates that the K1 value in the first set is 1, and then the terminal device may feed back acknowledgement information, which may be ACK or NACK, on the nth slot +7 symbol. Specifically, the response information may be ACK if the terminal device correctly decodes the PDSCH, and may be NACK otherwise.

S306: and the network equipment receives the response information of the PDSHC.

Therefore, in the embodiment of the application, the values of K1 in different sets are different, so that the values in each set can meet the requirement of the processing capability of the terminal device, and some values which cannot meet the processing capability of the terminal device in the sets are avoided, thereby reducing the bit number of DCI and improving the reliability of DCI. Meanwhile, compared with the scheme that only one K1 set is provided, and the length of the time unit corresponding to the K1 set is always slot, in the embodiment of the present application, when the length of the time unit is reduced, different K1 values are provided for the K1 sets with different time unit lengths, so that the reliability of DCI is improved while the user delay is satisfied.

In the embodiment of the application, by configuring the plurality of sets, the lengths of the time units corresponding to at least two of the plurality of sets are different, and the requirements of different services can be met. And the DCI information can dynamically indicate which set is adopted currently, so that dynamic switching among a plurality of sets can be realized, and different time delay requirements of dynamically scheduling a plurality of services are met.

Alternatively, the implementation manner of S301 may adopt the following scheme:

the network device sends first indication information, and when the terminal device receives the first indication information, the terminal device may determine a first set from the plurality of sets according to the first indication information. With regard to the process of determining the first set among the plurality of sets according to the first indication information, reference may be made to the above-mentioned process of determining the first set among the plurality of sets according to the first indication information, and a description thereof will not be provided.

When the network device does not send the first indication information, or when the terminal device does not receive the first indication information, the terminal device may set the protocol-specified K1 as the first set.

Alternatively, the implementation manner of S302 described above may adopt the following scheme:

and the network equipment sends second indication information, and the terminal equipment can determine the length of the time unit corresponding to the first set according to the second indication information when receiving the second indication information. Regarding the process of determining the time unit corresponding to the first set according to the second indication information, reference may be made to the process of determining the time unit corresponding to the first set according to the second indication information, and a description thereof is omitted here.

When the network device does not send the second indication information, or the terminal device does not receive the second indication information, the length of the K1 set time specified by the protocol may be used as the length of the time unit corresponding to the first set.

In view of the above alternative solution, an application scenario is provided: the K1 set and the time unit length may be set in advance for the terminal device in a manner prescribed by the protocol. The network equipment sends the indication information to the terminal equipment to indicate the K1 set, and then the terminal equipment communicates by adopting the K1 set indicated by the network equipment; or the network equipment does not indicate the K1 set for the terminal equipment, or the terminal equipment does not receive the indication information, the K1 set specified by the protocol is adopted for communication. And/or if the network equipment sends the indication information to the terminal equipment to indicate the time unit length, the terminal equipment communicates by adopting the time unit length indicated by the network equipment, otherwise, the terminal equipment communicates by adopting the time unit length specified by the protocol. The alternative schemes include, but are not limited to, the application in a fallback scenario, that is, before RRC establishment, or in an RRC re-establishment procedure, if a fallback DCI format, that is, DCI format1_ 0(DCI format1_0), is used to schedule data transmission.

In an example, the following application scenarios are provided for DCI format1_0, in the following scenarios, a set is referred to as a K1 set, and a time unit length corresponding to the set is referred to as a K1 granularity: the protocol specifies a set of K1 of {1, 2, 3, 4, 5, 6, 7, 8}, with a K1 granularity of 1 slot. And the network equipment configures the K1 set for the terminal equipment, and then the configured K1 set is adopted for communication, otherwise, the K1 set {1, 2, 3, 4, 5, 6, 7, 8} specified by the protocol is adopted for communication. Or the network equipment configures the K1 granularity for the terminal equipment, the configured K1 granularity is adopted for communication, otherwise, the K1 granularity of 1 time slot specified by the protocol is adopted.

In the embodiment of the application, for the DCI format1_0, in the absence of a configuration process, a set and a granularity specified by a default protocol are used, so that backward compatibility can be ensured; after access, the K1 granularity can be changed after configuration information is available, and the delay requirements of different services are met.

As shown in fig. 4, this embodiment may be:

s401: the terminal device determines the first set.

In this embodiment of the present application, the network device may send first indication information to the terminal device, where the first indication information is used to indicate the first set, and the terminal device may determine the first set according to the first indication information, where the first indication information may be, but is not limited to, higher layer signaling. One or more values of K1 may be included in the first set, and reference may be made to the description of the value of K1 in S301, which is not described herein.

S402: and the terminal equipment determines the length of the time unit corresponding to the first set.

For the implementation of S402, reference may be made to the description of S302, which is not described herein again.

S403: the network device transmits the PDSCH.

S404: the terminal device receives the PDSCH.

S405: and the terminal equipment sends response information of the PDSCH according to the length of the first set and the time unit corresponding to the first set.

S406: and the network equipment receives the response information of the PDSCH.

Alternatively, the implementation of S401 may employ the following:

the network device sends first indication information to the terminal device, and the terminal device can determine the first set according to the first indication information when receiving the first indication information. For the process of determining the first set according to the first indication information, refer to the process of determining the first set according to the first indication information, which is not described herein again.

The network device does not send the first indication information to the terminal device, or the terminal device may set the protocol-specified K1 as the first set when not receiving the first indication information.

In the embodiment of the present application, although only one first set is configured for the terminal device, different time unit lengths may be determined for the first set according to the relevant information of the DCI or the higher layer signaling, so as to meet the requirements of different services. For example, when the service is ultra-high reliability and low in time delay, a smaller time unit length can be adopted to ensure the time delay of the service; the method can adopt a larger time unit length aiming at the services with lower requirements on reliability or time delay, and can ensure that the ACK/NACK information of a plurality of data is fed back together, thereby reducing the signaling overhead and improving the resource utilization rate.

As shown in fig. 5, the process may specifically be:

s501: the terminal device determines the first set.

The first set includes one or more K1 values, and reference may be made to the description of the K1 value in S301 above, which is not described herein.

In an example, the network device may send second indication information to the terminal device, and the terminal device may determine the first set according to the second indication information. For the process of determining the first set, reference may be made to the above description of "the terminal device may determine the first set according to the first indication information" in S401, and a description thereof is omitted here.

In an example, the network device may send the first indication information, that is, the terminal device determines the first set according to the first indication information when receiving the first indication information, and otherwise, sets K1 specified by a protocol as the first set.

S502: when the terminal equipment receives first indication information from network equipment, determining the length of a time unit corresponding to the first set according to the first indication information;

in the embodiment of the present application, specific implementation of determining the length of the time unit corresponding to the first set according to the first indication information may be referred to the above description of S302, and will not be described here.

In this embodiment, when the terminal device does not receive the first indication information from the terminal device, the set of K1 specified by the protocol may be used as the first set.

S503: the network device transmits the PDSCH.

S504: the terminal device receives the PDSCH.

S505: and the terminal equipment sends response information of the PDSCH according to the length of the first set and the time unit corresponding to the first set.

S506: and the network equipment receives the response information of the PDSCH.

In the embodiment of the present application, although only one first set is configured for the terminal device, different time unit lengths may be determined for the first set according to DCI related information or higher layer signaling, so as to meet different delay requirements of different services.

It should be noted that, with respect to the flowcharts shown in fig. 3 to fig. 5, the order of execution of the steps is not limited, for example, S303 may be located before S301 and S302, or may be located after S301 and S302.

Based on the above concept, as shown in fig. 6, an embodiment of the present application provides a communication apparatus 600, where the communication apparatus 600 may be used to implement the functions of the terminal device in the flows shown in fig. 3, fig. 4, or fig. 5. The communication apparatus 600 may be applied to a terminal device or a chip within a terminal device. The communication device 600 may include a processing module 601 and a receiving module 602. Optionally, a sending module 603 and a storage module 604 may also be included.

In an example of the present application, the processing module 601 is configured to determine a first set from a plurality of sets, where lengths of time units corresponding to any two sets in the plurality of sets are different, where each set in the plurality of sets includes one or more K1 values, the K1 value refers to a number of time units that are spaced between when the terminal device receives a physical downlink data channel and when response information of the physical downlink data channel is fed back, and K1 is a non-negative integer; the processing module 601 is further configured to determine the length of the time unit corresponding to the first set; a receiving module 602, configured to receive a physical downlink data channel from a network device; the processing module 601 is further configured to send, to the network device, response information of the physical downlink data channel received by the receiving module according to the first set and the length of the time unit corresponding to the first set.

In this embodiment of the present application, optionally, the receiving module 602 may be configured to receive first indication information from a network device; a processing module 601, configured to determine the first set from the plurality of sets according to the first indication information received by the receiving module.

In this embodiment of the application, the processing module 601 is specifically configured to, when the first indication information is downlink control information DCI, determine the first set from the multiple sets according to a bit field in the DCI; or, when the first indication information is downlink control information DCI, determining the first set in the plurality of sets according to a format of the DCI; or, when the first indication information is downlink control information DCI, determining the first set in the plurality of sets according to a mapping mode of a physical downlink data channel indicated by the DCI; or, when the first indication information is downlink control information DCI, determining the first set among the plurality of sets according to the number of symbols of time domain resources occupied by a physical downlink data channel indicated by the DCI.

In an embodiment of the present application, the receiving module 602 may be configured to receive second indication information from a network device; the processing module 601 is configured to determine, according to the second indication information received by the receiving module, a length of a time unit corresponding to the first set.

In this embodiment, the processing module 601 may be specifically configured to: when the second indication information is the DCI, determining the length of the time unit corresponding to the first set according to a bit field in the DCI; or, when the second indication information is the DCI, determining a length of a time unit corresponding to the first set according to a format of the DCI; or, when the second indication information is the DCI, determining a length of a time unit corresponding to the first set according to a mapping manner of a physical downlink data channel indicated by the DCI; or, when the second indication information is the DCI, determining the length of the time unit corresponding to the first set according to the number of symbols of the time domain resource occupied by the physical downlink data channel indicated by the DCI.

Optionally, in this embodiment of the application, the processing module 601 may be specifically configured to: and determining the length of the time unit corresponding to the first set according to the corresponding relation between the first set and the length of the time unit.

In this embodiment of the application, the receiving module 602 is further configured to receive third indication information from the network device; the processing module 601 may be specifically configured to, when the receiving module receives third indication information from the network device, determine the first set from the plurality of sets according to the third indication information.

In this embodiment, the processing module 601 is further configured to set the set of K1 specified by the protocol as the first set when the third indication information is not received from the network device. The receiving module 602 is further configured to receive fourth indication information from the network device; the processing module 601 is further configured to, when the receiving module receives fourth indication information from the network device, determine, according to the fourth indication information, a length of a time unit corresponding to the first set. The processing module 601 is further configured to: and when the fourth indication information is not received from the network equipment, taking the time length of the K1 set specified by the protocol as the length of the time unit corresponding to the first set.

In another example of the present application, the processing module 601 may be configured to determine a first set, where the first set includes one or more values of K1, where the value of K1 refers to the number of time units between when the terminal device receives a physical downlink data channel and when response information of the physical downlink data channel is fed back, the value of K1 is a non-negative integer, if any one of the sets includes multiple values of K1, a minimum value of K1 in the any one set is greater than or equal to a first threshold, and if any one of the sets includes one value of K1, the value of K1 is greater than or equal to the first threshold, where a size of the first threshold is related to a length of a time unit corresponding to the any one set; the processing module 601 is further configured to determine the length of the time unit corresponding to the first set; a receiving module 602, configured to receive a physical downlink data channel from a network device; the processing module 601 is further configured to send, to the network device, response information that the receiving module receives the physical downlink data channel according to the first set and the length of the time unit corresponding to the first set.

In this embodiment of the present application, optionally, the size of the first threshold is related to the length of the time unit corresponding to the any set, specifically:

the first threshold is

Indicating a round-up operation.

In this embodiment of the present application, the receiving module 602 may be configured to receive first indication information from a terminal device; a processing module 601, configured to determine the first set according to the first indication information received by the receiving module.

In this embodiment, the receiving module 602 may further be configured to receive second indication information from the network device; the processing module 601 may further be configured to determine, according to the second indication information received by the receiving module, a length of a time unit corresponding to the first set.

In this embodiment, the processing module 601 may further specifically be configured to: the second indication information is DCI, and the length of the time unit corresponding to the first set is determined according to a bit field in the DCI; or, the second indication information is DCI, and the length of the time unit corresponding to the first set is determined according to the format of the DCI; or, the second indication information is DCI, and the length of the time unit corresponding to the first set is determined according to a mapping mode of a physical downlink data channel indicated by the DCI; or, the second indication information is DCI, and the length of the time unit corresponding to the first set is determined according to the number of symbols of the time domain resource occupied by the physical downlink data channel indicated by the DCI.

In this embodiment of the application, the processing module 601 may be specifically configured to determine the length of the time unit corresponding to the first set according to the correspondence between the first set and the length of the time unit.

In this embodiment of the application, the receiving module 602 may be further configured to receive third indication information from the network device; the processing module 601 may be further configured to determine the first set according to the third indication information received by the receiving module.

In this embodiment, the processing module 601 is further configured to set the protocol-specified K1 as the first set when the third indication information is not received from the network device. The receiving module 602 may be further configured to receive fourth indication information from the network device; the processing module 601 may further be configured to determine, according to the fourth indication information received by the receiving module, a length of a time unit corresponding to the first set. The processing module 601 is further configured to set the time length of K1 set specified by the protocol as the length of the time unit corresponding to the first set when the fourth indication information is not received from the network device.

In the embodiment of the present application, the descriptions of the processing module 601 and the receiving module 602 may specifically refer to the descriptions of the flows shown in fig. 3 to fig. 5, and are not described in detail here.

It should be noted that, in the communication apparatus, the entity device corresponding to the processing module may be a processor, the entity device corresponding to the receiving module may be a receiver, and further, the entity device corresponding to the sending module is a transmitter and the entity device corresponding to the storing module is a memory.

Based on the above concept, as shown in fig. 7, an embodiment of the present application provides a communication apparatus 700, where the communication apparatus 700 may be used to implement the functions of the network device in the flows shown in fig. 3, fig. 4, or fig. 5. The communication apparatus 700 may be applied to a network device or a chip within a network device. The communication device 700 may include a storage module 701, a transmitting module 702, and a receiving module 703. Optionally, the communication device 700 may also include a processing module 704.

In an example of the present application, the storage module 701 may be configured to store program instructions; a sending module 702, configured to send a physical downlink data channel to a terminal device; a receiving module 703, configured to receive response information of the physical downlink data channel sent by the terminal device, where the response information of the physical downlink data channel is determined according to a first set and lengths of time units corresponding to the first set, the first set is one of multiple sets, lengths of time units corresponding to any two of the multiple sets are different, each of the multiple sets includes one or more K1 values, the K1 value indicates the number of time units that are separated from the time when the terminal device receives the physical downlink data channel to the time when the response information of the physical downlink data channel is fed back, and K1 is a non-negative integer.

The sending module is further configured to send first indication information to a terminal device, where the first indication information is used to indicate the first set in the multiple sets.

In this embodiment of the present application, the first indication information is downlink control information DCI, a bit field of the DCI is used to determine the first set in the multiple sets, or a format of the DCI is used to determine the first set in the multiple sets, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine the first set in the multiple sets, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the first set in the multiple sets.

In this embodiment of the application, the sending module 702 may be configured to send third indication information to the terminal device, where the third indication information is used to indicate a length of a time unit corresponding to the first set.

In this embodiment of the present application, the third indication information is a high-level signaling, or the third indication information is DCI, a bit field in the DCI is used to determine a length of a time unit corresponding to the first set, or a format of the DCI is used to determine a length of a time unit corresponding to the first set, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set.

In the embodiment of the present application, any one of the sets includes a plurality of K1 values, a minimum K1 value in the any one set is greater than or equal to a first threshold, and the size of the first threshold is related to the length of a time unit corresponding to the any one set; or any one of the plurality of sets comprises a value of K1, the value of K1 being greater than or equal to the first threshold. The size of the first threshold is related to the length of the time unit corresponding to the any set, and specifically includes: what is needed isThe first threshold is

N1 represents the number of symbols between the receiving of the physical downlink data channel and the earliest feedback of the physical downlink data channel response information, M represents the length of the time unit corresponding to any set, and M represents the length of the time unit corresponding to any set

Indicating a round-up operation.

In another example of the present application, the storage module 701 may be configured to store program instructions; a sending module 702, configured to send a physical downlink data channel to a terminal device; a receiving module 703, configured to receive response information of the physical downlink data channel from the terminal device, the response information of the physical downlink data channel is determined according to the first set and the length of the time unit corresponding to the first set, the first set is one of a plurality of sets, the first set including one or more values of K1, the K1 value refers to the time unit number of the interval between the receiving of the physical downlink data channel and the feedback of the response information of the physical downlink data channel by the terminal equipment, the K1 is a non-negative integer, if a plurality of K1 values are included in any of the plurality of sets, a minimum K1 value in the any set is greater than or equal to a first threshold, if any one of the plurality of sets includes a value of K1, the value of K1 is greater than or equal to the first threshold, the size of the first threshold being related to the length of the time unit corresponding to the any one set.

In this embodiment of the present application, the size of the first threshold is related to the length of the time unit corresponding to the any set, specifically:

the first threshold is

The N1 represents an interval between the terminal equipment receiving the physical downlink data channel and feeding back the response information of the physical downlink data channelM represents the length of the time unit corresponding to any one set, the number of symbols of (a) is greater than M, the M represents the length of the time unit corresponding to any one set

Indicating a round-up operation.

Optionally, in this embodiment of the application, the sending module 702 may be further configured to send first indication information to the terminal device, where the first indication information is used to indicate the first set.

Optionally, in this embodiment of the application, the sending module 702 may be further configured to send second indication information to the terminal device, where the second indication information is used to indicate a length of a time unit corresponding to the first set.

In this embodiment of the present application, the second indication information is a high-level signaling, or the second indication information is downlink control information DCI, a bit field in the DCI is used to determine a length of a time unit corresponding to the first set, or a format of the DCI is used to determine a length of a time unit corresponding to the first set, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set, or a number of symbols of time domain resources occupied by the physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set.

In the embodiment of the present application, specific descriptions of the sending module 702 and the receiving module 703 may refer to the descriptions of fig. 3 to fig. 5, and are not described here.

The entity device corresponding to the processing module in the communication device can be a processor, the entity device corresponding to the receiving module can be a receiver, the entity device corresponding to the sending module can be a transmitter, and the entity device corresponding to the storing module can be a memory.

Fig. 8 shows a simplified schematic diagram of a possible design of the terminal device involved in the above-described embodiment. The terminal device includes a transmitter 801, a receiver 802, a controller/processor 803, a memory 804 and a modem processor 805.

The transmitter 801 conditions (e.g., converts to analog, filters, amplifies, and frequency upconverts, etc.) the output samples and generates an uplink signal, which is transmitted via an antenna to the base station as described in the embodiments above. On the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. The receiver 802 conditions (e.g., filters, amplifies, downconverts, and digitizes, etc.) the received signal from the antenna and provides input samples. Within the modem processor 805, an encoder 806 receives traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages. A modulator 807 further processes (e.g., symbol maps and modulates) the coded traffic data and signaling messages and provides output samples. A demodulator 809 processes (e.g., demodulates) the input samples and provides symbol estimates. A decoder 808 processes (e.g., deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages for transmission to the UE. Encoder 806, modulator 807, demodulator 809, and decoder 808 may be implemented by a combined modem processor 805. These elements are processed in accordance with the radio access technology employed by the radio access network (e.g., the access technologies of LTE and other evolved systems).

The controller/processor 803 controls and manages the operation of the terminal device, and executes the processing performed by the terminal device in the above-described embodiment. Such as in multiple sets, determining the first set, and/or other processes of the techniques described herein. The controller/processor 803 is illustratively configured to enable the terminal device to perform steps S301 and S302 of fig. 3, steps S401 and S402 of fig. 4, and steps S501 and S502 of fig. 5.

The memory 804 is used for storing program codes and data for the terminal device 800.

It should be noted that, the terminal device 800 provided in this embodiment of the present application is used to implement the communication method shown in fig. 3 to fig. 5, or the function of the terminal device in the communication method shown in fig. 3 to fig. 5, only the connection relationship between the modules in the terminal device 800 is described here, and a specific scheme and a specific executed action of the terminal device 800 for processing the communication method refer to the related description in the foregoing method embodiment, which is not described herein again.

Fig. 9 shows a schematic diagram of a possible structure of the network device involved in the above embodiments. The base station 900 includes: a transmitter/receiver 901, a controller/processor 902, and a memory 903.

The transmitter/receiver 901 is used to support information transceiving between a network device and the terminal device described in the above embodiments, and to support radio communication between the network device and other terminal devices. The controller/processor 902 performs various functions for communicating with terminal devices. In the uplink, uplink signals from the terminal device are received via the antenna, demodulated by the receiver 901, and further processed by the controller/processor 902 to recover traffic data and signaling information sent by the terminal device. On the downlink, traffic data and signaling messages are processed by the controller/processor 902 and conditioned by the transmitter 901 to generate a downlink signal, which is transmitted via the antenna to the terminal devices. The controller/processor 902 may also perform the processes of fig. 3-5 relating to network devices and/or other processes for the techniques described herein.

The memory 903 is used to store program codes and data of the network device. The network device 900 may further include a communication unit 904, where the communication unit 904 is configured to support the network device to communicate with other network entities.

It should be noted that, the network device 900 provided in the embodiment of the present application is used to implement the functions of the network device in the communication method shown in fig. 3 to fig. 5, only the connection relationship between the modules in the network device 900 is described here, and a specific scheme for processing the communication method and a specific executed action of the network device 900 are referred to the relevant description in the above method embodiment, and are not described again here. According to the method provided by the embodiment of the present application, an embodiment of the present application further provides a communication system, which includes the foregoing network device and terminal device.

Based on the above embodiments, the present application further provides a computer storage medium, in which a software program is stored, and the software program can implement the method provided by any one or more of the above embodiments when being read and executed by one or more processors. The computer storage medium may include: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

Based on the above embodiments, the present application further provides a chip, where the chip includes a processor, and is configured to implement the functions related to any one or more of the above embodiments, such as obtaining or processing information or messages related to the above methods. Optionally, the chip further comprises a memory for storing program instructions and data for execution by the processor. The chip may also contain chips and other discrete devices.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), application-specific integrated circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, transistor logic devices, discrete hardware components, and the like. The general purpose processor may be a microprocessor, any conventional processor, etc.

The memory may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory.

The bus system may include a power bus, a control bus, a status signal bus, and the like, in addition to the data bus. For clarity of illustration, however, the various buses are labeled as a bus system in the figures. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

Claims

1. A method of communication, comprising:

the method comprises the steps that a terminal device determines a first set in a plurality of sets, the lengths of time units corresponding to any two sets in the plurality of sets are different, each set in the plurality of sets comprises a plurality of K1 values, the K1 value refers to the number of time units of an interval between the time when the terminal device receives a physical downlink data channel and the time when response information of the physical downlink data channel is fed back, and K1 is a non-negative integer; the multiple sets are configured for the terminal device by the network device through a high-level signaling, or the multiple sets are specified by a protocol, or a part of the multiple sets are configured for the terminal device by the network device through a high-level signaling, and the rest part of the multiple sets are specified by a protocol;

the terminal equipment determines the length of a time unit corresponding to the first set;

the terminal equipment receives a physical downlink data channel from the network equipment;

and the terminal equipment sends response information of the physical downlink data channel to the network equipment according to the first set and the length of the time unit corresponding to the first set.

2. The method of claim 1, wherein the terminal device determines the first set from among a plurality of sets, comprising:

the terminal equipment receives first indication information from network equipment;

and the terminal equipment determines the first set in the plurality of sets according to the first indication information.

3. The method of claim 2, wherein the first indication information is downlink control information DCI, and the determining, by the terminal device, the first set among the plurality of sets according to the first indication information comprises:

the terminal equipment determines the first set in the plurality of sets according to a bit field in the DCI; alternatively, the first and second electrodes may be,

the terminal equipment determines the first set in the plurality of sets according to the format of the DCI; alternatively, the first and second electrodes may be,

the terminal equipment determines the first set in the plurality of sets according to the mapping mode of the physical downlink data channel indicated by the DCI; alternatively, the first and second electrodes may be,

and the terminal equipment determines the first set in the plurality of sets according to the number of the symbols of the time domain resources occupied by the physical downlink data channel indicated by the DCI.

4. The method of claim 1, wherein the determining, by the terminal device, the length of the time unit corresponding to the first set comprises:

the terminal equipment receives second indication information from the network equipment;

and the terminal equipment determines the length of the time unit corresponding to the first set according to the second indication information.

5. The method of claim 4, wherein the second indication information is DCI;

the terminal device determines the length of the time unit corresponding to the first set according to the second indication information, and the determining includes:

the terminal equipment determines the length of the time unit corresponding to the first set according to the bit field in the DCI; alternatively, the first and second electrodes may be,

the terminal equipment determines the length of the time unit corresponding to the first set according to the format of the DCI; alternatively, the first and second electrodes may be,

the terminal equipment determines the length of a time unit corresponding to the first set according to the mapping mode of the physical downlink data channel indicated by the DCI; alternatively, the first and second electrodes may be,

and the terminal equipment determines the length of the time unit corresponding to the first set according to the number of the symbols of the time domain resources occupied by the physical downlink data channel indicated by the DCI.

6. The method of claim 1, wherein the determining, by the terminal device, the length of the time unit corresponding to the first set comprises:

and the terminal equipment determines the length of the time unit corresponding to the first set according to the corresponding relation between the first set and the length of the time unit.

7. The method of claim 1, wherein the terminal device determines the first set from among a plurality of sets, comprising:

and when the terminal equipment receives third indication information from the network equipment, determining the first set in the plurality of sets according to the third indication information.

8. The method of claim 7, further comprising:

and when the terminal equipment does not receive the third indication information from the network equipment, taking a set of K1 specified by a protocol as the first set.

9. The method of claim 1, wherein the determining, by the terminal device, the length of the time unit corresponding to the first set comprises:

and when the terminal equipment receives fourth indication information from the network equipment, determining the length of the time unit corresponding to the first set according to the fourth indication information.

10. The method of claim 9, further comprising:

and when the terminal equipment does not receive the fourth indication information from the network equipment, taking the K1 set time length specified by the protocol as the length of the time unit corresponding to the first set.

11. The method according to any one of claims 1 to 10, wherein any one of said plurality of sets comprises a plurality of K1 values, wherein a minimum K1 value in said any one set is greater than or equal to a first threshold, and wherein a size of said first threshold is related to a length of a time unit corresponding to said any one set; or any one of the plurality of sets comprises a value of K1, the value of K1 being greater than or equal to the first threshold.

12. The method according to claim 11, wherein the size of the first threshold is related to the length of the time unit corresponding to any one of the sets, and specifically comprises:

the first threshold is

Indicating a round-up operation.

13. A method of communication, comprising:

the network equipment sends a physical downlink data channel to the terminal equipment;

the network device receives response information of the physical downlink data channel sent by the terminal device, where the response information of the physical downlink data channel is determined according to a first set and lengths of time units corresponding to the first set, the first set is one of multiple sets, lengths of time units corresponding to any two of the multiple sets are different, each of the multiple sets includes multiple K1 values, the K1 value indicates the number of time units spaced between the terminal device receiving the physical downlink data channel and feeding back the response information of the physical downlink data channel, and K1 is a non-negative integer; the plurality of sets are configured for the terminal device by the network device through a high-level signaling in advance, or the plurality of sets are specified by a protocol, or a part of the sets are configured for the terminal device by the network device through a high-level signaling, and the rest part of the sets are specified by a protocol.

14. The method of claim 13, further comprising:

the network equipment sends first indication information to the terminal equipment, wherein the first indication information is used for indicating the first set in the plurality of sets.

15. The method according to claim 14, wherein the first indication information is DCI, a bit field of the DCI is used to determine the first set among the sets, or a format of the DCI is used to determine the first set among the sets, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine the first set among the sets, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the first set among the sets.

16. The method according to any one of claims 13 to 15, further comprising:

and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the length of the time unit corresponding to the first set.

17. The method according to claim 16, wherein the second indication information is DCI, and a bit field in the DCI is used to determine a length of a time unit corresponding to the first set, or a format of the DCI is used to determine a length of a time unit corresponding to the first set, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the length of the time unit corresponding to the first set.

18. The method according to any of claims 13 to 15, wherein any of said plurality of sets comprises a plurality of K1 values, wherein a minimum K1 value in said any set is greater than or equal to a first threshold, wherein a size of said first threshold is related to a length of a time unit corresponding to said any set; or any one of the plurality of sets comprises a value of K1, the value of K1 being greater than or equal to the first threshold.

19. The method according to claim 18, wherein the size of the first threshold is related to the length of the time unit corresponding to any one of the sets, and specifically comprises:

the first threshold is

Indicating a round-up operation.

20. A communications apparatus, comprising:

a processing module, configured to determine a first set from among multiple sets, where lengths of time units corresponding to any two sets in the multiple sets are different, where each set in the multiple sets includes multiple K1 values, the K1 value indicates a number of time units that are spaced between when the communication apparatus receives a physical downlink data channel and when response information of the physical downlink data channel is fed back, and K1 is a non-negative integer; the multiple sets are configured by the network device through a high-level signaling in advance, or the multiple sets are specified by a protocol, or a part of the multiple sets are configured by the network device through the high-level signaling, and the rest part of the multiple sets are specified by the protocol;

the processing module is configured to determine a length of a time unit corresponding to the first set;

a receiving module, configured to receive a physical downlink data channel from the network device;

and the processing module is configured to send, to the network device, the response information of the physical downlink data channel received by the receiving module according to the first set and the length of the time unit corresponding to the first set.

21. The apparatus of claim 20,

the receiving module is used for receiving first indication information from network equipment;

the processing module is configured to determine the first set from the plurality of sets according to the first indication information received by the receiving module.

22. The apparatus according to claim 21, wherein the processing module is specifically configured to, when the first indication information is downlink control information DCI, determine the first set among the plurality of sets according to a bit field in the DCI; alternatively, the first and second electrodes may be,

when the first indication information is Downlink Control Information (DCI), determining the first set in the plurality of sets according to the format of the DCI; alternatively, the first and second electrodes may be,

when the first indication information is Downlink Control Information (DCI), determining the first set in the plurality of sets according to a mapping mode of a physical downlink data channel indicated by the DCI; alternatively, the first and second electrodes may be,

and when the first indication information is Downlink Control Information (DCI), determining the first set in the plurality of sets according to the number of symbols of time domain resources occupied by a physical downlink data channel indicated by the DCI.

23. The apparatus of claim 20,

the receiving module is used for receiving second indication information from the network equipment;

and the processing module is configured to determine, according to the second indication information received by the receiving module, a length of a time unit corresponding to the first set.

24. The apparatus of claim 23, wherein the processing module is specifically configured to:

when the second indication information is the DCI, determining the length of the time unit corresponding to the first set according to a bit field in the DCI; alternatively, the first and second electrodes may be,

when the second indication information is the DCI, determining the length of the time unit corresponding to the first set according to the format of the DCI; alternatively, the first and second electrodes may be,

when the second indication information is the DCI, determining a length of a time unit corresponding to the first set according to a mapping mode of a physical downlink data channel indicated by the DCI; alternatively, the first and second electrodes may be,

and when the second indication information is the DCI, determining the length of the time unit corresponding to the first set according to the number of symbols of the time domain resource occupied by the physical downlink data channel indicated by the DCI.

25. The apparatus of claim 20, wherein the processing module is specifically configured to:

and determining the length of the time unit corresponding to the first set according to the corresponding relation between the first set and the length of the time unit.

26. The apparatus of claim 20,

the receiving module is further configured to receive third indication information from the network device;

the processing module is specifically configured to determine the first set from the multiple sets according to third indication information when the receiving module receives the third indication information from the network device.

27. The apparatus of claim 26,

the processing module is further configured to set a protocol-specified K1 as the first set when the third indication information is not received from the network device.

28. The apparatus of claim 20,

the receiving module is further configured to receive fourth indication information from the network device;

the processing module is further configured to determine, when the receiving module receives fourth indication information from the network device, a length of a time unit corresponding to the first set according to the fourth indication information.

29. The apparatus of claim 28, wherein the processing module is further configured to use a protocol-specified K1 set time length as the length of the time unit corresponding to the first set when a fourth indication information is not received from the network device.

30. The apparatus according to any of claims 20 to 29, wherein any of said plurality of sets comprises a plurality of K1 values, wherein a minimum K1 value in said any set is greater than or equal to a first threshold, and wherein a size of said first threshold is related to a length of a time unit corresponding to said any set; or any one of the plurality of sets comprises a value of K1, the value of K1 being greater than or equal to the first threshold.

31. The apparatus according to claim 30, wherein the size of the first threshold is related to the length of the time unit corresponding to any one of the sets, and specifically comprises:

the first threshold is

N1 represents the number of symbols between the communication device receiving the physical downlink data channel and the earliest feedback of the physical downlink data channel response information, M represents the length of the time unit corresponding to any set, and

indicating a round-up operation.

32. A communication apparatus, comprising a storage module, a transmission module, and a reception module, wherein:

the storage module is used for storing program instructions;

the sending module is used for sending a physical downlink data channel to the terminal equipment;

the receiving module is configured to receive response information of the physical downlink data channel sent by the terminal device, where the response information of the physical downlink data channel is determined according to a first set and lengths of time units corresponding to the first set, the first set is one of multiple sets, lengths of time units corresponding to any two sets of the multiple sets are different, each of the multiple sets includes multiple K1 values, the K1 value indicates a number of time units that are spaced between when the terminal device receives the physical downlink data channel and when the terminal device feeds back the response information of the physical downlink data channel, and K1 is a non-negative integer; the plurality of sets are configured for the terminal device through a high-level signaling before the sending module sends the physical downlink data channel to the terminal device, or the plurality of sets are specified by a protocol, or a part of the plurality of sets are configured for the terminal device through a high-level signaling before the sending module sends the physical downlink data channel to the terminal device, and the rest part of the plurality of sets are specified by a protocol.

33. The apparatus of claim 32, wherein the sending module is further configured to send first indication information to the terminal device, and wherein the first indication information is used to indicate the first set in the plurality of sets.

34. The apparatus of claim 33, wherein the first indication information is downlink control information DCI, a bit field of the DCI is used to determine the first set in the multiple sets, or a format of the DCI is used to determine the first set in the multiple sets, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine the first set in the multiple sets, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the first set in the multiple sets.

35. The apparatus according to any one of claims 32 to 34, wherein the sending module is further configured to send second indication information to the terminal device, where the second indication information is used to indicate a length of a time unit corresponding to the first set.

36. The apparatus of claim 35, wherein the second indication information is DCI, and a bit field in the DCI is used to determine a length of a time unit corresponding to the first set, or a format of the DCI is used to determine a length of a time unit corresponding to the first set, or a mapping manner of a physical downlink data channel indicated by the DCI is used to determine a length of a time unit corresponding to the first set, or a number of symbols of a time domain resource occupied by the physical downlink data channel indicated by the DCI is used to determine the length of the time unit corresponding to the first set.

37. The apparatus according to any of claims 32 to 34, wherein any of said plurality of sets comprises a plurality of K1 values, wherein a minimum K1 value in said any set is greater than or equal to a first threshold, and wherein a size of said first threshold is related to a length of a time unit corresponding to said any set; or any one of the plurality of sets comprises a value of K1, the value of K1 being greater than or equal to the first threshold.

38. The apparatus according to claim 37, wherein the size of the first threshold is related to the length of the time unit corresponding to any one of the sets, and specifically is:

the first threshold is

Indicating a round-up operation.

39. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 12.

40. A computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to perform the method of any one of claims 13 to 19.