A communication method and device

Abstract

A communication method and apparatus, the method comprising: a terminal device receives first indication information, the first indication information is used to indicate the grouping information of N control resource sets among M control resource sets, N is less than M, and N and M are positive integers greater than or equal to 1; the terminal device determines the grouping information of K control resource sets other than N control resource sets among the M control resource sets according to the first indication information. By adopting the method and apparatus of the present application, the terminal device and the network device can achieve a consistent understanding of the grouping information of the control resource set, and then the terminal device and the network device can have a consistent understanding of the number of bits of the DAI field of the DCI carried by the control resource set, thereby increasing the robustness of DCI detection.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed with the Chinese Patent Office on October 18, 2019, with application number PCT / CN2019 / 112002 and application name “A Communication Method and Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of communication technology, and in particular to a communication method and device. Background Art

[0004] In the New Radio (NR) standard of the fifth generation (5G) communication system, downlink transmission resources are divided into a control region and a data region. The control region is used to transmit control channels, and the data region is used to transmit data channels. The control information carried by the control channel includes the time domain and frequency domain positions of the resource blocks (RBs) used by the data channel in the data region, and the data channel is used to carry downlink data or uplink data.

[0005] In order to improve the efficiency of blind detection of control channels by terminal devices, the NR standard proposes the concept of control resource set (CORESET). That is, one or more control resource sets are divided for each terminal device in the control area. The base station can send a control channel to the terminal device on any control resource set corresponding to the terminal device, such as sending downlink control information (DCI). In order to enable the terminal device to feed back feedback information of data from different sites to different sites respectively, the prior art introduces a CORESET grouping information indication mechanism. In some scenarios, some CORESET grouping information may be defaulted in the CORESET configuration information sent by the base station to the user equipment (UE). Therefore, how to ensure that the base station and the UE have a consistent understanding of the CORESET grouping information, so that the base station and the terminal device align and understand the sequence of the feedback information, is an urgent problem to be solved. Summary of the invention

[0006] The present application provides a communication method and apparatus, the method being used to achieve consistent understanding of CORESET grouping information by a network device and a terminal device.

[0007] In a first aspect, an embodiment of the present application provides a communication method, the method comprising: a terminal device receives first indication information, the first indication information being used to indicate grouping information of N control resource sets among M control resource sets, N being less than M, and N and M being positive integers greater than or equal to 1; then the terminal device determines the grouping information of K control resource sets among the M control resource sets except the N control resource sets according to the first indication information, and K being a positive integer greater than or equal to 1.

[0008] In an embodiment of the present application, the terminal device determines the group information corresponding to the control resource set that is not indicated with group information based on the group information corresponding to the control resource set that is indicated with group information. On the one hand, this can reduce signaling overhead and ensure that the base station has the flexibility to configure group information. On the other hand, it can ensure that the group information determined by the terminal device according to the above method is consistent with the network side.

[0009] In one possible design, M control resource sets belong to the same carrier or the same BWP. When the grouping information of N control resource sets is the same, the terminal device determines that the grouping information of K control resource sets is the same as the grouping information of N control resource sets; when the grouping information of at least two control resource sets among the N control resource sets is different, the terminal device determines that the grouping information of K control resource sets is the same as the grouping information of the first control resource set among the N control resource sets, wherein the grouping information of the first control resource set is the minimum or maximum value among the grouping information of the N control resource sets.

[0010] In one possible design, M control resource sets belong to different carriers. When the N control resource sets have the same grouping information, the terminal device determines that the K control resource sets not indicated with grouping information are the same as the grouping information of the N control resource sets; when the N control resource sets have different grouping information, the terminal device determines that the K control resource sets not indicated with grouping information are the same as the grouping information of the second control resource set, wherein the grouping information of the second control resource set is the minimum or maximum value among the grouping information of the N control resource sets.

[0011] In another possible design, M control resource sets belong to different carriers. When L control resource sets with indicated grouping information in the same carrier are the same grouping information, the terminal device determines that the control resource set with no indicated grouping information in the same carrier is the same as the grouping information of the L control resource sets; when there are at least two control resource sets with different grouping information among the L control resource sets with indicated grouping information in the same carrier, the terminal device determines that the control resource set with no indicated grouping information in the same carrier is the same as the grouping information of the second control resource set; wherein L is a positive integer less than N, the grouping information of the second control resource set is the minimum or maximum value of the grouping information of the L control resource sets, and the L control resource sets are partial control resource sets of the N control resource sets.

[0012] In one possible design, the grouping information of the M control resource sets is one or more of {0,1}.

[0013] In the above application embodiment, the terminal device can ensure that it has a consistent understanding of the packet information with the network device according to the above method, so that the base station and the terminal device have a consistent understanding of the number of bits for generating feedback information, thereby increasing transmission reliability and resource utilization efficiency.

[0014] In a possible design, the M control resource sets are control resource sets in a carrier configured through RRC signaling or control resource sets in a carrier activated through MAC CE signaling. That is, the M control resource sets may all be control resource sets in activated carriers, or may partially be control resource sets in activated carriers, and the rest may be control resource sets in unactivated carriers.

[0015] In a possible embodiment, the terminal device receives second indication information, where the second indication information is used to indicate carrier information of M control resource sets; and the method further includes:

[0016] The terminal device determines a first number of carriers of first grouping information; wherein the first grouping information is any one of the grouping information of M control resource sets, and then the terminal device determines, based on the first number, the number of bits of the downlink allocation index DAI field of the DCI carried by U control resource sets corresponding to the first grouping information; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

[0017] In the embodiment of the present application, when the grouping information of the control resource set is defaulted, the terminal device can still determine the number of bits of the DAI field of the DCI carried by the control resource set based on all or part of the grouping information and carrier information of the control resource set, ensuring that the terminal device and the network device have a consistent understanding of the number of DAI bits and increasing transmission reliability. The terminal device determines the number of bits of the DCI carried in the control resource set under the grouping information only based on the number of carriers containing the same grouping information, thereby reducing the overhead of the DCI.

[0018] In a possible embodiment, the first indication information and the second indication information may be carried in the same message or in different messages.

[0019] In a possible embodiment, when the first number is greater than 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a first value; when the first number is equal to 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a second value; the first value is greater than the second value. For example, when the number of carriers including the first grouping information is 2, the terminal device determines that the number of bits of the Total DAI field in the DCI carried by the control resource set corresponding to the first grouping information is 2, and when the number of carriers of the first grouping information is 1, the terminal device determines that the number of bits of the Total DAI field in the DCI carried by the control resource set corresponding to the first grouping information is 0.

[0020] In a possible embodiment, the terminal device determines the number of bits of downlink data feedback information and the bit position of each downlink data feedback information in the feedback information sequence according to the DAI. Specifically, the DAI may include counterDAI. When the number of carriers is greater than 1, the DAI may also include Total DAI, wherein the counter DAI is used to identify the order of the DCI, thereby indicating the bit position of the data scheduled by the DCI in the feedback information sequence, and the Total DAI is used to identify the number of DCIs corresponding to the currently existing data to be fed back, thereby indicating the number of bits in the feedback information sequence.

[0021] In a possible embodiment, the terminal device detects the DCI carried by U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information.

[0022] In a possible embodiment, the terminal device sends first feedback information of first downlink data, wherein the first downlink data is DCI scheduled by at least one of U control resource sets.

[0023] In a possible embodiment, the terminal device generates a first feedback information sequence according to the DCI carried by at least one of the U control resource sets.

[0024] The terminal device determines the number of bits of DCI carried in the control resource set under the group information only according to the number of carriers containing the same group information, thereby reducing the overhead of DCI.

[0025] In a possible embodiment, the terminal device determines the second number of carriers including second grouping information based on the grouping information and carrier information of M control resource sets; wherein the second grouping information is any one of the grouping information of the M control resource sets, and the second grouping information is different from the first grouping information; the terminal device determines the number of bits of the downlink allocation index DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information based on the second number; wherein V is less than M, and V is a positive integer greater than or equal to 1; the terminal device detects the DCI carried by the V control resource sets based on the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information.

[0026] In a possible embodiment, uplink feedback resources for downlink data scheduled by DCI carried by U control resource sets and uplink feedback resources for downlink data scheduled by DCI carried by V control resource sets are different in the same time unit.

[0027] In a possible embodiment, the terminal device sends second feedback information of second downlink data, wherein the second downlink data is scheduled by at least one DCI carried by V control resource sets.

[0028] In a possible embodiment, the first feedback information and the second feedback information are respectively carried on different uplink resources in the same time unit. Specifically, in a time slot, the first feedback information and the second feedback information can be carried on two PUCCH resources in time division or frequency division in the same slot.

[0029] In a possible embodiment, the terminal device determines the HARQ-ACK feedback information corresponding to the downlink data scheduled by the DCI carried on the control resource set configured with the same grouping information, generates a HARQ-ACK sequence and determines the uplink resources occupied by the sequence. In addition, the terminal device generates HARQ-ACK sequences for the HARQ-ACK feedback information corresponding to the DCI carried on the control resource set configured with different grouping information and determines the uplink resources occupied by each HARQ-ACK sequence.

[0030] In a second aspect, an embodiment of the present application provides a communication method, the method comprising: a terminal device receives configuration information of M control resource sets sent by a network device, wherein the configuration information includes carrier information of the M control resource sets and grouping information of all or part of the control resource sets; the terminal device determines the grouping information and carrier information of the M control resource sets according to the configuration information. The terminal device determines a first number of carriers containing first grouping information according to the grouping information and carrier information of some or all of the control resource sets in the M control resource sets; wherein the first grouping information is any one of the grouping information of the M control resource sets, and then, the terminal device determines the number of bits of the downlink allocation index DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information according to the first number; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

[0031] In the embodiment of the present application, the terminal device determines the number of bits of the DCI carried in the control resource set under the group information only according to the number of carriers containing the same group information, thereby reducing the DCI overhead. At the same time, when the group information of some control resource sets is missing, the terminal device can also determine the number of bits of the DAI field in the DCI carried by the control resource set corresponding to each group information, ensuring that the terminal device and the network device have a consistent understanding of the number of DAI bits, thereby increasing transmission reliability.

[0032] In a possible embodiment, when the first number is greater than 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a first value; when the first number is equal to 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a second value; the first value is greater than the second value. For example, when the first number is 2, the terminal device determines that the number of bits of the Total DAI field in the DCI carried by the control resource set corresponding to the first grouping information is 2, and when the first number is 1, the terminal device determines that the number of bits of the Total DAI field in the DCI carried by the control resource set corresponding to the first grouping information is 0.

[0033] In a possible embodiment, the terminal device determines the number of bits of downlink data feedback information and the bit position of each downlink data feedback information in the feedback information sequence according to the DAI. Specifically, the DAI may include counterDAI. When the number of carriers is greater than 1, the DAI may also include Total DAI, wherein the counter DAI is used to identify the order of the DCI, thereby indicating the bit position of the data scheduled by the DCI in the feedback information sequence, and the Total DAI is used to identify the number of DCIs corresponding to the currently existing data to be fed back, thereby indicating the number of bits in the feedback information sequence.

[0034] In a possible embodiment, the terminal device detects at least one DCI carried by U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information.

[0035] In a possible embodiment, the terminal device sends first feedback information of first downlink data, wherein the first downlink data is DCI scheduled by at least one of U control resource sets.

[0036] In a possible embodiment, the terminal device generates a first feedback information sequence according to the DCI carried in U control resource sets.

[0037] The terminal device determines the number of bits of DCI carried in the control resource set under the group information according to the number of carriers containing the same group information, thereby reducing the overhead of DCI.

[0038] In a possible embodiment, the terminal device determines a second number of carriers of second grouping information; wherein the second grouping information is any one of the grouping information of M control resource sets that is different from the first grouping information; the terminal device determines, based on the second number, the number of bits of the downlink allocation index DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information; wherein V is less than M, and V is a positive integer greater than or equal to 1; the terminal device detects at least one DCI carried by the V control resource sets based on the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information.

[0039] In a possible embodiment, uplink feedback resources for downlink data scheduled by DCI carried by U control resource sets and uplink feedback resources for downlink data scheduled by DCI carried by V control resource sets are different in the same time unit.

[0040] In a possible embodiment, the terminal device sends second feedback information of second downlink data, wherein the second downlink data is DCI scheduling carried by V control resource sets, and the first feedback information and the second feedback information are respectively carried on different uplink resources in the same time unit. Specifically, in a time slot, the first feedback information and the second feedback information can be carried on different PUCCH resources.

[0041] In a possible embodiment, the terminal device determines the HARQ-ACK feedback information corresponding to the downlink data scheduled by the DCI carried on the control resource set configured with the same grouping information, generates a HARQ-ACK sequence and determines the uplink resources occupied by the sequence. In addition, the terminal device generates HARQ-ACK sequences for the HARQ-ACK feedback information corresponding to the DCI carried on the control resource set configured with different grouping information and determines the uplink resources occupied by each HARQ-ACK sequence.

[0042] In a third aspect, an embodiment of the present application provides a communication method, the method comprising: a network device determines M control resource sets; the network device sends first indication information to a terminal device, the first indication information comprising grouping information of N control resource sets among the M control resource sets, N is less than M, and N and M are positive integers greater than or equal to 1; wherein the grouping information of the N control resource sets is related to the grouping information of K control resource sets among the M control resource sets except the N control resource sets.

[0043] In an embodiment of the present application, the network device carries the grouping information of some control resource sets in the configuration information, which can reduce the signaling overhead on the one hand, and on the other hand, the grouping information of N control resource sets is related to the grouping information of K control resource sets, which can ensure that the terminal device and the network side have a consistent understanding of the grouping information.

[0044] In a possible embodiment, when the grouping information of N control resource sets is the same, the grouping information of the N control resource sets is the same as the grouping information of the K control resource sets; when the grouping information of at least two control resource sets among the N control resource sets is different, the grouping information of the first control resource set among the N control resource sets is the same as the grouping information of the K control resource sets, wherein the grouping information of the first control resource set is the minimum value or the maximum value among the grouping information of the N control resource sets.

[0045] In a possible embodiment, the M control resource sets belong to the same carrier or the same BWP.

[0046] In a possible embodiment, when the L control resource sets indicated with grouping information in the same carrier are the same grouping information, the grouping information of the L control resource sets is the same as the control resource set not indicated with grouping information in the same carrier;

[0047] When there are at least two control resource sets with different grouping information among L control resource sets indicated with grouping information in the same carrier, the grouping information of the second control resource set among the L control resource sets is the same as the grouping information of the control resource set without grouping information indicated in the same carrier; wherein L is less than N, and the grouping information of the second control resource set is the minimum value or the maximum value among the grouping information of the L control resource sets.

[0048] In the above application embodiment, the terminal device can ensure that the understanding of the packet information is consistent with that of the network device according to the above method, thereby increasing the robustness of subsequent DCI detection.

[0049] In a possible design, the M control resource sets are control resource sets in a carrier configured by RRC signaling or MAC CE signaling. That is, the M control resource sets may all be activated control resource sets, or may be partially activated control resource sets.

[0050] In a possible embodiment, the method further includes:

[0051] The network device determines a first number of carriers of first grouping information, wherein the first grouping information is any one of the grouping information of M control resource sets; and the first number is associated with the grouping information and carrier information of the control resource set.

[0052] The network device determines the number of bits of the downlink allocation index DAI field of the DCI carried by U control resource sets corresponding to the first grouping information based on the first quantity; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

[0053] In a possible embodiment, the network device sends the DCI in one or more of the U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets.

[0054] In an embodiment of the present application, the network device determines the number of bits of the DAI field of the DCI carried by the control resource set, and the first number is associated with the grouping information and carrier information of the control resource set, ensuring that the terminal device and the network device have a consistent understanding of the number of bits of the DAI, thereby increasing transmission reliability.

[0055] In a possible embodiment, the network device sends second indication information, where the second indication information is used to indicate carrier information of the M control resource sets. The carrier information can be used to indicate the first quantity, or to instruct the terminal device to determine the first quantity.

[0056] In a possible embodiment, the first indication information and the second indication information may be carried in the same message or in different messages.

[0057] In a possible embodiment, when the first number is greater than 1, the network device determines that the number of bits of the DAI field of the DCI carried by U sets of control resources is a first value; when the first number is equal to 1, the network device determines that the number of bits of the DAI field of the DCI carried by U sets of control resources is a second value; the first value is greater than the second value. For example, when the first number is 2, the terminal device determines that the number of bits of the Total DAI field is 2, and when the first number is 1, the terminal device determines that the number of bits of the Total DAI field is 0.

[0058] In a fourth aspect, an embodiment of the present application provides a communication method, the method comprising: a network device determines M control resource sets, and the network device determines a first number of carriers containing first grouping information based on the grouping information and carrier information of some or all of the M control resource sets; wherein the first grouping information is any one of the grouping information of the M control resource sets.

[0059] Then, the network determines the number of bits of the downlink allocation index DAI field of the DCI carried by U control resource sets corresponding to the first grouping information based on the first quantity; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

[0060] In an embodiment of the present application, the network device determines that the number of bits of the DAI field of the DCI carried by the control resource set is associated with the grouping information and carrier information of the control resource set, ensuring that the terminal device and the network device have a consistent understanding of the number of DAI bits, thereby increasing transmission reliability. At the same time, only when the number of carriers containing the same grouping information is greater than 1, the DCI corresponding to the grouping information includes Total DAI, thereby reducing the overhead of DCI.

[0061] In a possible embodiment, when the first number is greater than 1, the network device determines that the number of bits of the DAI field of the DCI carried by U sets of control resources is a first value; when the first number is equal to 1, the network device determines that the number of bits of the DAI field of the DCI carried by U sets of control resources is a second value; the first value is greater than the second value. For example, when the first number is 2, the terminal device determines that the number of bits of the Total DAI field is 2, and when the first number is 1, the terminal device determines that the number of bits of the Total DAI field is 0.

[0062] In a possible embodiment, the network device sends the DCI in one or more of the U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets.

[0063] In a fifth aspect, an embodiment of the present application provides a communication method, the method comprising: a terminal device receives HARQ-ACK feedback mode indication information, which is used to indicate that the HARQ-ACK feedback mode of the terminal device is joint feedback. Joint feedback means that the HARQ-ACK bits corresponding to the DCI received on the control resource set under different grouping information are carried on the same PUCCH resource. The terminal device determines the number of bits of the Total DAI field in the DCI according to the HARQ-ACK feedback mode indication information, and then the terminal device receives the DCI according to the number of bits in the Total DAI field.

[0064] In an embodiment of the present application, the terminal device determines the existence of the Total DAI field based on the joint feedback mode indicated by the feedback mode indication information, so that when configuring the grouping information, the reliability of the HARQ-ACK feedback can be guaranteed by the Total DAI indication information.

[0065] In one possible design, the terminal device also receives first indication information and second indication information, wherein the first indication information is used to indicate grouping information of N control resource sets, N is a positive integer greater than or equal to 1, and the second indication information is used to indicate quantity information of the first carrier, and the N control resource sets are in the first carrier.

[0066] The terminal device determines the number of bits of the Total DAI field in the DCI carried in any control resource set in N control resource sets based on the first indication information, the second indication information and the HARQ-ACK feedback mode indication information; the terminal device receives the DCI based on the number of bits in the Total DAI field.

[0067] In an embodiment of the present application, when the control resource set is configured with grouping information, even if the number of carriers is configured to be only 1, the DCI also includes the Total DAI field, thereby ensuring the reliability of the HARQ-ACK feedback and improving the transmission performance.

[0068] In a possible design, N control resource sets belong to the same carrier and at least one of the N control resource sets is configured with grouping information, then a Total DAI field exists in the DCI.

[0069] In another possible design, the N control resource sets belong to different carriers, and a Total DAI field exists in the DCI.

[0070] In one possible design, the grouping information is used to indicate one or two of the integers 0 and 1, and the grouping information is used to determine the HARQ-ACK feedback information corresponding to the DCI received on the corresponding control resource set.

[0071] In one possible design, the terminal device independently generates a HARQ-ACK bit sequence based on the DCI received on a control resource set configured with the same grouping information.

[0072] In one possible design, the first indication information, the second indication information and the HARQ-ACK feedback mode indication information may be indicated via RRC signaling.

[0073] In a possible embodiment, the terminal device determines the number of bits of downlink data feedback information and the bit position of each downlink data feedback information in the feedback information sequence according to the DAI. Specifically, the DAI may include counterDAI. When the number of carriers is greater than 1, the DAI may also include Total DAI, wherein the counter DAI is used to identify the order of the DCI, thereby indicating the bit position of the data scheduled by the DCI in the feedback information sequence, and the Total DAI is used to identify the number of DCIs corresponding to the currently existing data to be fed back, thereby indicating the number of bits in the feedback information sequence.

[0074] In a possible embodiment, the terminal device determines an offset of the transmission power of the uplink signal according to the first indication information, the second indication information and the HARQ-ACK feedback mode indication information; and the terminal device sends the uplink signal according to the offset of the transmission power.

[0075] In a possible embodiment, the terminal device determines the offset of the transmit power of the uplink transmission according to the first indication information, the second indication information and the HARQ-ACK feedback mode indication information. Specifically, when the HARQ-ACK feedback mode of the terminal device is joint feedback, the terminal device determines the number of HARQ-ACK bits corresponding to the DCI carried in N control resource sets according to the first indication information and the second indication information. The HARQ-ACK is carried in the same uplink channel, such as PUSCH or PUCCH, and determines the offset or adjustment value of the transmit power of the uplink signal according to the number of HARQ-ACK bits.

[0076] In a possible embodiment, the uplink signal may be a PUCCH carrying HARQ-ACK.

[0077] In a sixth aspect, an embodiment of the present application provides a communication method, the method comprising: a network device sends a hybrid automatic repeat request confirmation HARQ-ACK feedback mode indication information to indicate that the HARQ-ACK feedback mode of the terminal device is joint feedback. Joint feedback means that the HARQ-ACK bits corresponding to the DCI sent on the control resource set under different grouping information are carried on the same PUCCH resource. The network device determines the number of bits of the TotalDAI field in the DCI according to the HARQ-ACK feedback mode indication information, and then the network device sends the DCI according to the number of bits in the Total DAI field.

[0078] In an embodiment of the present application, the terminal device determines the existence of the Total DAI field based on the joint feedback mode indicated by the feedback mode indication information, so that when configuring the grouping information, the reliability of the HARQ-ACK feedback can be guaranteed by the Total DAI indication information.

[0079] In one possible design, the network device also sends first indication information and second indication information to the terminal device, where the first indication information is used to indicate grouping information of N control resource sets, where N is a positive integer greater than or equal to 1, and the second indication information is used to indicate quantity information of the first carrier, where the N control resource sets are in the first carrier; the network device determines the number of bits of the Total DAI field in the DCI carried in any control resource set in the N control resource sets based on the first indication information and the second indication information and the HARQ-ACK feedback mode indication information; the network device sends the DCI based on the number of bits in the Total DAI field.

[0080] In an embodiment of the present application, when the control resource set is configured with grouping information, even if the number of carriers is configured to be only 1, the DCI also includes the Total DAI field, thereby ensuring the reliability of the HARQ-ACK feedback and improving the transmission performance.

[0081] In a possible design, N control resource sets belong to the same carrier and at least one of the N control resource sets is configured with grouping information, then a Total DAI field exists in the DCI.

[0082] In another possible design, the N control resource sets belong to different carriers, and a Total DAI field exists in the DCI.

[0083] In one possible design, the grouping information is used to indicate one or more of the integers 0 and 1, and the grouping information is used to determine the HARQ-ACK feedback information corresponding to the DCI sent up and down the corresponding control resource set.

[0084] In one possible design, the network device determines the HARQ-ACK bit sequence based on information corresponding to the DCI sent on a control resource set configured with the same grouping information.

[0085] In one possible design, the network device determines information, which is sent to the terminal device via DCI, and determines the HARQ-ACK bit sequence based on the information. In one possible design, the first indication information, the second indication information, the third indication information and the HARQ-ACK feedback mode indication information can be indicated via RRC signaling.

[0086] In a possible embodiment, the network device determines the number of bits of downlink data feedback information and the bit position of each downlink data feedback information in the feedback information sequence according to the DAI. Specifically, the DAI may include counterDAI, and when the number of carriers is greater than 1, the DAI may also include Total DAI, wherein the counter DAI is used to identify the order of the DCI, thereby indicating the bit position of the data scheduled by the DCI in the feedback information sequence, and the Total DAI is used to identify the number of DCIs corresponding to the currently existing data to be fed back, thereby indicating the number of bits in the feedback information sequence.

[0087] In a possible embodiment, the network device determines the offset of the transmission power of the uplink signal according to the first indication information, the second indication information and the HARQ-ACK feedback mode indication information.

[0088] In a possible embodiment, when the HARQ-ACK feedback mode of the terminal device is joint feedback, the network device determines the offset of the transmission power of the uplink signal based on the first indication information and the second indication information. Specifically, the network device determines the number of bits of HARQ-ACK based on the first indication information and the second indication information, and determines the offset or adjustment value of the transmission power of the uplink signal based on the number of bits of HARQ-ACK.

[0089] In a possible embodiment, the network device sends the uplink signal according to the offset of the transmission power of the uplink signal.

[0090] In a possible embodiment, the uplink signal may be a PUCCH carrying HARQ-ACK.

[0091] In a seventh aspect, an embodiment of the present application provides a communication device, the communication device comprising a processor, the processor being coupled to a memory, wherein: the memory is used to store instructions; the processor is used to execute the first aspect or the method in any possible design of the first aspect, or execute the fifth aspect or the method in any possible design of the fifth aspect according to the instructions stored in the memory. Optionally, the communication device may also include the memory. Optionally, the communication device may also include a transceiver for supporting the communication device to send and / or receive information in the above method. Optionally, the communication device may be a terminal device, or a device in a terminal device, such as a chip or a chip system, wherein the chip system includes at least one chip, and the chip system may also include other circuit structures and / or discrete devices.

[0092] In an eighth aspect, a communication device is provided, which may be a terminal device, or a device in a terminal device, or a device that can be used in combination with a terminal device. In one design, the device may include a module that executes the method / operation / step / action described in the first aspect, the second aspect, or the fifth aspect, and the module may be a hardware circuit, or software, or a hardware circuit combined with software. Exemplarily, the device may include a transceiver module and a processing module, and the transceiver module and the processing module may perform the corresponding functions in any one of the design examples of the first aspect, the second aspect, or the fifth aspect. The functions of the transceiver module and the processing module may refer to the records of the first aspect or the second aspect, and will not be described one by one here.

[0093] In the ninth aspect, a communication device is provided, which may be a network device, or a device in a network device, or a device that can be used in combination with a network device. In one design, the device may include a module that executes the methods / operations / steps / actions described in the third aspect, the fourth aspect, or the sixth aspect, and the module may be a hardware circuit, or software, or a combination of a hardware circuit and software. Exemplarily, the device may include a transceiver module, and the transceiver module is used to execute the corresponding functions in any one of the design examples of the third aspect, the fourth aspect, or the sixth aspect. For the specific functions of the processing module and the transceiver module, please refer to the records of the third aspect, the fourth aspect, or the sixth aspect, which will not be described here.

[0094] In the tenth aspect, an embodiment of the present application also provides a computer-readable storage medium, comprising instructions, which, when executed on a computer, enables the computer to execute the method of the first aspect, any possible design of the first aspect, the second aspect or any possible design of the second aspect, the third aspect or any possible design of the third aspect, the fourth aspect or any possible design of the fourth aspect, the fifth aspect or any possible design of the fifth aspect, or the sixth aspect or any possible design of the sixth aspect.

[0095] In the eleventh aspect, the embodiment of the present application further provides a chip system, which includes a processor and may also include a memory, for implementing the method of the first aspect, any possible design of the first aspect, the second aspect or any possible design of the second aspect, the third aspect or any possible design of the third aspect, the fourth aspect or any possible design of the fourth aspect, the fifth aspect or any possible design of the fifth aspect, and the sixth aspect or any possible design of the sixth aspect. The chip system may be composed of chips, or may include chips and other discrete devices.

[0096] In the twelfth aspect, a computer program product is also provided in an embodiment of the present application, comprising instructions, which, when run on a computer, enable the computer to execute the method of the first aspect, any possible design of the first aspect, the second aspect or any possible design of the second aspect, the third aspect or any possible design of the third aspect, the fourth aspect or any possible design of the fourth aspect, the fifth aspect or any possible design of the fifth aspect, or the sixth aspect or any possible design of the sixth aspect.

[0097] In the thirteenth aspect, an embodiment of the present application provides a system, which includes the device of the seventh aspect, or includes the devices described in the eighth and ninth aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0098] Figure 1A to Figure 1B A schematic diagram of a communication scenario applicable to an embodiment of the present application;

[0099] FIG. 2A to FIG. 2D A schematic diagram of a dynamic HARQ-ACK code division generation mechanism provided in an embodiment of the present application;

[0100] Figure 3 A schematic diagram of a communication method provided in an embodiment of the present application;

[0101] FIG. 4A to FIG. 4I A schematic diagram of a situation in which grouping information is determined according to an embodiment of the present application;

[0102] Figure 5 A schematic diagram of another communication method provided in an embodiment of the present application;

[0103] Figure 6 and Figure 7A schematic diagram of a situation of determining the number of DAI bits of a DCI provided in an embodiment of the present application;

[0104] Figure 8 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0105] Fig. 9 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0106] Fig.10 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0107] Fig.11 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0108] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0109] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, worldwide interoperability for microwave access (WiMAX) communication system, future fifth generation (5G) system such as NR, and future communication systems such as 6G system.

[0110] The present application will present various aspects, embodiments or features around a system that may include multiple devices, components, modules, etc. It should be understood and appreciated that each system may include additional devices, components, modules, etc., and / or may not include all of the devices, components, modules, etc. discussed in conjunction with the figures. In addition, combinations of these schemes may also be used.

[0111] In addition, in the embodiments of the present application, the word "exemplary" is used to indicate an example, illustration or description. Any embodiment or design described as "exemplary" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present concepts in a concrete way.

[0112] In the embodiments of the present application, information, signal, message, and channel can sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings they intend to express are consistent. "of", "corresponding, relevant" and "corresponding" can sometimes be used interchangeably. It should be noted that when the distinction between them is not emphasized, the meanings they intend to express are consistent.

[0113] It should be understood that the character “ / ” in this article generally indicates that the previous and next associated objects are in an “or” relationship, but it may also indicate an “and / or” relationship. Please refer to the previous and next context for specific understanding.

[0114] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0115] The embodiments of the present application can be applied to both time division duplex (TDD) scenarios and frequency division duplex (FDD) scenarios.

[0116] The embodiments of the present application can be applied not only in traditional typical networks, but also in future UE-centric networks. The UE-centric network introduces a non-cell network architecture, that is, a large number of small stations are deployed in a specific area to form a hyper cell. Each small station is a transmission point (TP) or TRP) of the hyper cell and is connected to a centralized controller. When the UE moves in the hyper cell, the network side device selects a new sub-cluster for the UE to serve it, thereby avoiding real cell switching and achieving continuity of UE services. Among them, the network side device includes wireless network equipment.

[0117] Some scenarios in the embodiments of the present application are explained by taking the scenarios of the NR network in the wireless communication network as an example. It should be pointed out that the solutions in the embodiments of the present application can also be applied to other wireless communication networks, and the corresponding names can also be replaced by the names of the corresponding functions in other wireless communication networks.

[0118] To facilitate understanding of the embodiments of the present application, first Figure 1A The communication system shown in the figure is used as an example to describe in detail the communication system applicable to the embodiments of the present application. Figure 1A A schematic diagram of a communication system applicable to a communication method in an embodiment of the present application is shown. In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The specific operating method in the method embodiment can also be applied to the device embodiment or the system embodiment. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0119] Figure 1A This is a schematic diagram of a network architecture in a carrier aggregation scenario applicable to the present application, wherein the network architecture includes a first network device 100, a second network device 110 and a terminal device 120, and two downlink carrier units: CC1 and CC2, wherein CC1 and CC2 of the first network device 100 and the second network device 110 operate at different frequencies.

[0120] The terminal device 120 may be a wireless terminal device capable of receiving network device scheduling and indication information, and the wireless terminal device may be a device that provides voice and / or data connectivity to a user, or a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. The network device (e.g., a macro base station) 100 is an entity on the network side for transmitting or receiving signals, and the network device may be a device for communicating with a mobile device.

[0121] In addition, in an embodiment of the present application, the network device provides services for a cell, and the terminal device communicates with the network device through the communication resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include: a metro cell, a micro cell, a picocell, a femtocell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services. In addition, in other possible cases, the network device may be other devices that provide wireless communication functions for the terminal device. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. For the convenience of description, in an embodiment of the present application, a device that provides wireless communication functions for the terminal device is referred to as a network device.

[0122] Figure 1BA schematic diagram of a network architecture in a dual-connectivity (DC) scenario applicable to the present application, the architecture includes two cell groups: a master cell group (MCG) and a secondary cell group (SCG). The MCG includes a primary cell (PCell) or additionally includes one or more secondary cells (SCell), and the SCG includes a primary secondary cell (PSCell) or additionally includes one or more SCells. The network device that manages the MCG is called a master network device or a master node, and the network device that manages the SCG is called a secondary network device or a secondary node.

[0123] In the process of 5G network deployment, 5G cells can be used as macro coverage networking (as the main network device) or as small base stations (as auxiliary network devices) to enhance the coverage and capacity of the existing LTE network. Regardless of the networking method used, dual connection technology can be used to achieve the interconnection between LTE and 5G systems, thereby improving the wireless resource utilization of the entire mobile network system, reducing the delay of system switching, and improving user and system performance.

[0124] In the embodiment of the present application, the primary network device may be an LTE network device (such as an eNB), a 5G network device (such as a gNB), or one of future communication network devices, and the secondary network device may also be an LTE network device, a 5G network device, or one of future communication network devices, and the primary network device and the secondary network device may be network devices of the same standard, such as both are eNBs, or network devices of different standards, such as the primary network device is an eNB and the secondary network device is a gNB. The present application does not limit the communication standards of the primary network device and the secondary network device.

[0125] It should be understood that Figure 1A and Figure 1B This is a simplified schematic diagram for ease of understanding only. The communication system may also include other network devices or other terminal devices. Figure 1A and Figure 1B Not drawn in.

[0126] The network architecture and business scenarios described in the embodiments of the present application are intended to illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are equally applicable to similar technical problems.

[0127] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. A person of ordinary skill in the art can appreciate that with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0128] Below, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0129] 1) Terminal equipment, including equipment that provides voice and / or data connectivity to users, for example, may include a handheld device with wireless connection function, or a processing device connected to a wireless modem. The terminal equipment can communicate with the core network via a radio access network (RAN) and exchange voice and / or data with the RAN. The terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device (D2D) terminal equipment, V2X terminal equipment, machine-to-machine / machine-type communications (M2M / MTC) terminal equipment, Internet of Things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station, remote station, access point (AP), remote terminal, access terminal, user terminal, user agent, or user equipment, etc. For example, it may include mobile phones (or "cellular" phones), computers with mobile terminal devices, portable, pocket-sized, handheld, and computer-built-in mobile devices, etc. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), and other devices. It also includes limited devices, such as devices with low power consumption, or devices with limited storage capacity, or devices with limited computing power, etc. For example, it includes information sensing devices such as barcodes, radio frequency identification (RFID), sensors, global positioning systems (GPS), laser scanners, etc.

[0130] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices or smart wearable devices, etc., which are a general term for the application of wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-size, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, etc., as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets, smart helmets, and smart jewelry for vital sign monitoring.

[0131] The various terminal devices introduced above, if located on a vehicle (eg, placed in or installed in a vehicle), can be considered as vehicle-mounted terminal devices, which are also called on-board units (OBU).

[0132] 2) Network equipment, for example, including access network (AN) equipment, such as a base station (e.g., access point), which may refer to a device in the access network that communicates with a wireless terminal device through one or more cells at the air interface, or, for example, a network device in a V2X technology is a road side unit (RSU). The base station can be used to convert received air frames to and from Internet Protocol (IP) packets, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network. The RSU can be a fixed infrastructure entity that supports V2X applications and can exchange messages with other entities that support V2X applications. The network equipment can also coordinate the attribute management of the air interface. For example, the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutionary Node B) in an LTE system or long term evolution-advanced (LTE-A), or it may also include the fifth generation mobile communication technology (the 5 thIn a new radio (NR) system of the next generation (5G), the next-generation node B (gNB) may also include a centralized unit (CU) and a distributed unit (DU) in a cloud radio access network (CloudRAN) system. Embodiments of this application do not limit this.

[0133] 3) A downlink control channel, such as a PDCCH, or an enhanced physical downlink control channel (ePDCCH), or other downlink control channels, is not specifically limited.

[0134] 4) A CORESET refers to the physical resources used to carry a PDCCH or DCI. Generally, each CORESET corresponds to a set of parameters, which may include: the index number of the CORESET, the number of consecutive OFDM symbols occupied by the CORESET, a set of resource blocks (RBs) occupied by the CORESET, the quasi-co-location (QCL) assumption of the demodulation reference signal DMRS of the CORESET for assisting signal reception, and other parameters. At the same time, each CORESET is associated with one or more PDCCH candidates. It can be understood that the terminal device performs a DCI detection operation on each PDCCH candidate. Generally, a DCI detection operation is performed on some physical resources in the CORESET. The configuration of the CORESET can be sent down through RRC signaling. At this time, the CORESET can be considered as a user-specific control resource set, or it can be sent down through a system message or a broadcast message, such as through SIB. At this time, the CORESET can be considered as a cell-specific control resource set, that is, multiple terminal devices in a cell can share this CORESET.

[0135] 5) The carrier (component carrier, CC) in this application corresponds to a specific frequency band, or, under a specific network architecture, can also be understood as a virtual cell, such as a serving cell, etc. Each carrier corresponds to a set of specific configuration parameters, which include configuration information of one or more bandwidth parts (bandwidth parts, BWP), and each BWP occupies part or all of the bandwidth of the carrier, wherein the BWP configuration information includes: frequency domain subcarrier spacing configuration information, the number and location information of RBs included in the BWP, and uplink and downlink data channel configuration information and control channel configuration information.

[0136] Specifically, the downlink control channel configuration information includes one or more control resource set configuration information. That is to say, for each control resource set, the terminal device can determine the BWP and carrier where it is located based on the above configuration information. A specific set of configuration parameters corresponding to the carrier can be sent through RRC signaling. At this time, the carrier can be considered as a user-specific carrier, or it can be sent through a system message or a broadcast message, such as through SIB. At this time, the carrier can be considered as a cell-specific carrier, that is, multiple terminal devices in a cell can share the carrier. Furthermore, the configured carrier can be activated or deactivated through MAC CE signaling, and the communication between the network device and the terminal device is only performed on the activated carrier. When multiple BWPs are configured in a carrier, the network device needs to send additional signaling to indicate the BWP currently activated in the carrier, so that the communication between the network device and the terminal device is only performed on the activated BWP.

[0137] 6) The terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0138] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, the first signal and the second signal are only used to distinguish different signals, and do not indicate the difference in content, priority, transmission order or importance of the two signals.

[0139] In order to facilitate the understanding of the present application, before introducing the communication method provided by the present application, the following technical features involved in the present application are briefly introduced.

[0140] The basic time unit for downlink resource scheduling in the 5G mobile communication system is a time slot. A time slot consists of 7 or 14 symbols in the time domain. A time slot can be divided into a control area and a data area. Among them, the data area is used to send the physical downlink shared channel (PDSCH) that carries downlink data. The control area is used to send the physical downlink control channel (PDCCH), and the PDCCH is used to carry downlink control information (DCI). The time-frequency resources used by PDSCH and PDCCH are composed of one or more resource blocks (RB) in the frequency domain. Each RB consists of 12 consecutive subcarriers in the frequency domain and one symbol in the time domain. One subcarrier in the frequency domain and one symbol in the time domain are called a resource element (RE).

[0141] At present, the base station transmits PDSCH to the terminal device, and PDSCH is generally scheduled by the control information carried in PDCCH, such as DCI. In order to correctly receive PDSCH, the UE needs to detect and decode DCI first. The DCI carried by PDCCH contains transmission information indicating PDSCH, such as the time-frequency and spatial resources occupied by PDSCH, that is, downlink resource allocation information. In the control area of ​​a time slot, there are one or more CORESETs, and the UE can detect DCI on this one or more CORESETs. And DCI detection can be performed once or multiple times on each CORESET. The terminal device needs to receive PDSCH according to its own implementation algorithm and determine the HARQ-ACK information of the PDSCH according to the result of receiving PDSCH to inform the network device whether the current PDSCH is correctly received. If the PDSCH is correctly decoded, the terminal device feedbacks ACK (affirmative confirmation), otherwise the terminal device feedbacks NACK (negative confirmation), for example, the HARQ-ACK information of the PDSCH bit position 0 indicates NACK, and the bit position 1 indicates ACK. The HARQ-ACK information corresponding to multiple PDSCHs can be jointly encoded to generate a HARQ-ACK sequence and carried on uplink resources. There are two existing mechanisms for generating HARQ-ACK sequences:

[0142] Mechanism 1: Static HARQ-ACK sequence, or the generation mechanism of static HARQ-ACK codebook. That is, the terminal device determines the number of HARQ-ACK bits based on the number of PDSCHs that may be scheduled within a period of time, and determines the correspondence between each HARQ-ACK bit and PDSCH based on the predefined order of the PDSCHs that may be scheduled, so as to upload feedback information in the corresponding HARQ-ACK bit. This mechanism does not depend on the number of DCIs actually sent by the base station, and the number of HARQ-ACK bits is reserved.

[0143] Mechanism 2: Dynamic HARQ-ACK sequence, or dynamic HARQ-ACK codebook generation mechanism. That is, the terminal device determines the number of bits of the HARQ-ACK sequence and the order of each DCI based on the information indicated by the DAI in the detected DCI. The order of the DCI corresponds to the bit position of the feedback information of the PDSCH scheduled by the DCI in the HARQ-ACK sequence. This mechanism depends on the number of DCIs actually sent by the base station. In order to make the number of bits of the HARQ-ACK sequence fed back by the terminal device and the PDSCH corresponding to each bit position consistent with the understanding of the base station, the base station will carry the DAI indication to clarify the number of bits of the HARQ-ACK sequence and the PDSCH corresponding to each bit position when sending DCI.

[0144] against Figure 1A and Figure 1BIn the multi-base station communication scenario shown, the terminal device has the following two HARQ-ACK information feedback methods, among which the uplink resource carrying the HARQ-ACK information takes PUCCH as an example.

[0145] Method 1: Unified feedback of HARQ-ACK information of multiple base stations, that is, multiple base stations send N PDSCHs, and the UE uniformly feeds back HARQ-ACK information corresponding to the N PDSCHs. The HARQ-ACK information is carried on a PUCCH resource, and the HARQ-ACK information corresponds to a HARQ-ACK sequence, that is, the HARQ-ACK information is jointly encoded.

[0146] Method 2: Independently feed back the HARQ-ACK information of each base station. Assume that two base stations send N PDSCHs to the terminal device, base station 1 sends N1 PDSCHs, and base station 2 sends N2 PDSCHs. The UE feeds back the HARQ-ACK information corresponding to the N1 PDSCHs and the N2 PDSCHs respectively. The HARQ-ACK information corresponding to the N1 PDSCHs forms a HARQ-ACK sequence and is carried on PUCCH1, and the HARQ-ACK information corresponding to the N2 PDSCHs forms a HARQ-ACK sequence and is carried on PUCCH2.

[0147] Currently, the dynamic HARQ-ACK codebook determines the number of HARQ-ACK bits and the order of feedback information of each DCI-scheduled PDSCH in the HARQ-ACK sequence according to the information indicated by the DAI of the actual DCI.

[0148] Specifically, first, the terminal device needs to know which PDSCH HARQ-ACK feedback information generates the same HARQ-ACK sequence. The method is to determine the time domain position (e.g., time slot) of the uplink feedback based on the detected DCI, and perform unified feedback on the DCI with the same PUCCH time domain position. For example Figure 2A In the embodiment, the terminal device determines the time domain position of PDSCH 1 and PDSCH 2 according to the time domain position of DCI 1 and DCI 2 and the time domain position of PDSCH relative to DCI indicated by the two DCIs, and determines the time domain position of PUCCH corresponding to PDSCH 1 and PDSCH 2 according to the HARQ-ACK feedback delay information indicated by DCI 1 and DCI 2. When the time domain position of PUCCH indicated by the two DCIs is the same, for example, located in the same slot, the HARQ-ACK of the two PDSCHs is uniformly fed back. Based on the above mechanism, the number of HARQ-ACK bits carried by each PUCCH can be determined, that is, the number of PDSCHs corresponding to the feedback.

[0149] Then, the terminal device needs to determine the PDSCH corresponding to the HARQ-ACK fed back on each bit of the corresponding HARQ-ACK based on the pre-defined DCI arrangement order, so as to feed back the information of the corresponding PDSCH on each bit.

[0150] The DCI sorting criteria are as follows: first, all DCIs are sorted by PDCCH transmission occasion (monitoring occasion); second, the DCIs with the same sorting after the first step are further sorted by carrier (CC) index value from small to large, where the PDCCH monitoring occasion is determined based on the PDCCH detection period, detection offset (offset) and detection pattern (pattern) (configured in the search space set). For example Figure 2B In the above, the terminal device determines that the four DCIs correspond to the same feedback moment (that is, the same PUCCH resource). According to the first step above, it is determined that DCI1 and DCI 2 are ranked before DCI 3 and DCI 4. According to the second step above, it is determined that DCI 1 is ranked before DCI 2, and DCI 3 is ranked before DCI 4. After the DCI sorting, the HARQ-ACK feedback information corresponding to DCI 1 is located in the first bit position in the HARQ-ACK sequence, and the HARQ-ACK feedback information corresponding to DCI 2 is located in the second bit position in the HARQ-ACK sequence, and so on.

[0151] In order to avoid the situation where the terminal device misses the DCI, resulting in the number of HARQ-ACK bits being different from the number of HARQ-ACK bits understood by the base station. In order to improve the transmission robustness, in the prior art, each DCI carries a field indicating the cumulative number of DCIs, called the cumulative (counter) downlink assignment index (Downlink Assignment Indication, DAI), which is used to avoid ambiguity in the number of HARQ-ACK bits when the DCI is missed. This field (usually 2-bit) is used to indicate the sorting of the current DCI (the indication rules are the same as the above rules for sorting DCI), and then indicates the bit position of the HARQ-ACK corresponding to the current DCI. For example Figure 2C In the example, the counter DAI in DCI 1 to DCI 4 indicates 1 to 4 respectively. Therefore, if DCI 3 is missed, the UE can determine that 4 DCIs have been sent according to the counter DAI=4 indicated by DCI 4, and there will be 4 HARQ-ACK information bits, and the feedback corresponding to the third HARQ-ACK bit is NACK.

[0152] In order to further improve the robustness, for example, when the number of configured carriers is greater than 1, the possibility of missing DCI detection increases, so an additional information Total DAI is needed to indicate the existing DCI on the current PDCCH monitoring occasion, so as to ensure that the UE and the base station have the same understanding of the number of HARQ-ACK bits. Figure 2D , if two carriers are configured, the DCI will include Total DAI to indicate the total number of DCIs at the current moment and before. For example, DCI 1 and DCI 2 on PDCCH monitoringoccasion 1 will both indicate Total DAI=2, indicating that the total number of DCIs for the current PDCCH monitoringoccasion and the previous feedback HARQ-ACK is 2. In the prior art, the terminal device only determines the number of DAI bits in the DCI (that is, whether there is Total DAI) and then the number of HARQ-ACK bits based on the number of carriers corresponding to the configured CORESET, and does not take into account the grouping information of the CORESET. Because the feedback information corresponding to the uplink data scheduled by the DCI carried by CORESETs of different groups may be fed back separately, the prior art may cause the terminal device and the network device to have inconsistent perceptions of the number of DCI bits.

[0153] For this reason, Figure 3 FIG. 1 is a flow chart of the first communication method provided in the embodiment of the present application. Figure 3 , the method comprising:

[0154] Step 301: The network device determines M control resource sets.

[0155] Specifically, the network device determines one or more carriers, including the identifier of each carrier and the physical resource location information, etc., wherein one or more control resource sets are configured on each carrier. In addition, the network device also determines the grouping information of the control resource set, and the grouping information can be carried in the parameter set corresponding to the control resource set, and there are multiple possible values. The DCI-scheduled PDSCH carried in the control resource set with the same grouping information can perform unified feedback, that is, the corresponding HARQ-ACK information can be used to generate a HARQ-ACK sequence and carried on the same uplink resource. It can be understood that the grouping information can be used to characterize the transmission point information to which the control resource set belongs, and the HARQ-ACK information corresponding to the PDSCH scheduled by the same transmission point can be uniformly fed back to the transmission point. For example, if a terminal device communicates with two transmission points, the grouping information carried by the configured M control resource sets is 0 or 1, which can be understood as the M control resource sets are divided into two groups, with group numbers 0 and 1, respectively. The HARQ-ACK information corresponding to the control resource set with the configured grouping information of 0 can uniformly generate a HARQ-ACK sequence carried on an uplink resource. In view of the fact that the HARQ-ACK feedback information of the PDSCH on multiple carriers can be uniformly encoded and fed back, the control resource set on each carrier can be configured as group 0 or group 1, that is, the grouping information on different carriers is consistent. At this time, if the control resource sets on multiple carriers have the same grouping information, the data scheduled on multiple carriers can be uniformly encoded and fed back. In addition to the above-mentioned functions, the grouping information in the control resource set also lies in that when the HARQ-ACK feedback information corresponding to the PDSCH supporting multiple site scheduling is uniformly encoded and carried on the same uplink resource, the terminal device uses the grouping information to further sort the DCI, that is, the DCI sorting is based on the grouping information in addition to the PDCCH detection timing and carrier number, so as to determine the PDSCH corresponding to each bit of the HARQ-ACK.

[0156] Step 302: The network device sends first indication information to the terminal device, where the first indication information is used to indicate grouping information of N control resource sets out of M control resource sets, where N is less than M.

[0157] The grouping information of the N control resource sets is related to the grouping information corresponding to the K control resource sets other than the N control resource sets in the M control resource sets.

[0158] That is, the first indication information includes grouping information of some control resource sets in the M control resource sets, and the grouping information of some control resource sets is defaulted. The grouping information can be an identifier or an index value (such as a group number). For example, the first indication information is used to indicate that the grouping information of CORESET#1 is 0 and the grouping information of CORESET#2 is 1.

[0159] Optionally, the network device sends configuration information of M control resource sets to the terminal device.

[0160] Further optionally, the configuration information includes first indication information.

[0161] Specifically, the M control resource sets may be control resource sets in a carrier configured by the network device through radio resource control (RRC) layer signaling.

[0162] Optionally, the M control resource sets may also be control resource sets in a carrier activated by the network device through media access control control element (MAC CE) signaling. Specifically, the network device may configure one or more carriers, one or more carriers may include configuration information of corresponding control resource sets, and further activate part or all of the control resource sets in one or more carriers through MAC CE signaling.

[0163] Step 303: The terminal device receives the first indication information.

[0164] Step 304: The terminal device determines, based on the first indication information, grouping information corresponding to K control resource sets among the M control resource sets except for N control resource sets.

[0165] Wherein, K is a positive integer greater than or equal to 1. Possible values ​​of K are as follows: Assume that the M control resource sets are all control resource sets in all carriers configured by the base station. If the grouping information corresponding to the K control resource sets is determined based on the grouping information in the control resource sets in all carriers configured by RRC signaling, then K is equal to the difference between M and N. If the grouping information corresponding to the K control resource sets is determined based on the grouping information in the control resource sets in the activated carrier, then K may be less than the difference between M and N.

[0166] For example, the M control resource sets are control resource sets in the activated carriers. If the grouping information corresponding to the K control resource sets is determined based on the grouping information in the control resource sets in all activated carriers, then K is equal to the difference between M and N.

[0167] For example, M control resource sets are control resource sets in one carrier. If the grouping information corresponding to K control resource sets is determined based on the grouping information in the same carrier, then K is equal to the difference between M and N.

[0168] Below Figure 3 Various situations in which a terminal device determines grouping information of K control resource sets in the illustrated embodiment are described.

[0169] Scenario 1: M control resource sets are all located on the same carrier or the same bandwidth part (band width part, BWP). When the grouping information of N control resource sets is the same, the terminal device determines that the grouping information of K control resource sets is the same as the grouping information of N control resource sets. In other words, M control resource sets are all located on the same carrier or the same BWP. When the grouping information of N control resource sets is the same, the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried by the N control resource sets and the K control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource. Alternatively, it can be understood that N control resource sets and K control resource sets correspond to the same transmission point.

[0170] For example, Figure 4A As shown in the figure, in one carrier configured by the base station, the grouping information configured for CORESET#1 is group 0, the grouping information configured for CORESET#2 is group 0, the grouping information of CORESET#3 is default, and the grouping information configured for CORESET#4 is group 0. The terminal device can determine that the grouping information of CORESET#3 is group 0 based on the group 0 where CORESET#1, CORESET#2, and CORESET#4 are located. In other words, CORESET#1, CORESET#2, CORESET#3, and CORESET#4 correspond to the same transmission point.

[0171] In case 2, M control resource sets are all located on the same carrier or the same BWP, and when the grouping information of at least two control resource sets in the N control resource sets is different, the terminal device determines that the grouping information of the K control resource sets is the same as the grouping information of the first control resource set in the N control resource sets, wherein the grouping information of the first control resource set is the minimum value or the maximum value among the grouping information of the N control resource sets. In other words, when the M control resource sets are all located on the same carrier or the same BWP, and when the grouping information of at least two control resource sets in the N control resource sets is different, taking the grouping information of the first control resource set as the minimum value among the grouping information of the N control resource sets as an example, the control resource set with the minimum value of the grouping information in the N control resource sets and the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried in the K control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource, or, it can be understood that the control resource set with the minimum value of the grouping information in the N control resource sets and the K control resource sets correspond to the same transmission point.

[0172] For example, Figure 4B As shown, in one carrier configured by the base station, the grouping information configured for CORESET#1 is group 0, the grouping information configured for CORESET#2 is group 1, the grouping information of CORESET#3 is defaulted, and the grouping information configured for CORESET#4 is group 0. The terminal device may determine that the grouping information of CORESET#3 is group 0, or the terminal device may determine that the grouping information of CORESET#3 is group 1, that is, when CORESET#3 corresponds to the smallest grouping information, CORESET#1, CORESET#3 and CORESET#4 correspond to the same transmission point, and when CORESET#3 corresponds to the largest grouping information, CORESET#2 and CORESET#3 correspond to the same transmission point.

[0173] Scenario 3: M control resource sets are located in different carriers. When the grouping information of N control resource sets is the same, the terminal device determines that the grouping information of K control resource sets is the same as the grouping information of N control resource sets. That is to say, when M control resource sets are configured in multiple carriers and all control resource sets configured with grouping information, for example, N control resource sets are configured with the same grouping information, the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried by the N control resource sets and the K control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource. Alternatively, it can be understood that N control resource sets and K control resource sets correspond to the same transmission point.

[0174] For example, Figure 4C As shown, the base station is configured with 2 carriers in total, wherein the grouping information configured for CORESET#1 on the first carrier (CC1) is group 0, the grouping information configured for CORESET#2 is group 0, the grouping information of CORESET#3 on the second carrier is defaulted, and the grouping information configured for CORESET#4 on the second carrier (CC2) is group 0. The terminal device can determine that the grouping information of CORESET#3 on the second carrier is group 0, that is, CORESET#1, CORESET#2, CORESET#3 and CORESET#4 correspond to the same transmission point.

[0175] Scenario 4: M control resource sets are located on different carriers, and when the grouping information of at least two control resource sets in N control resource sets is different, the terminal device determines that the grouping information of K control resource sets is the same as the grouping information of the first control resource set in N control resource sets, wherein the grouping information of the first control resource set is the minimum or maximum value among the grouping information of the N control resource sets. In other words, when M control resource sets are located on different carriers, and when the grouping information of at least two control resource sets in N control resource sets is different, taking the grouping information of the first control resource set as the minimum value among the grouping information of the N control resource sets as an example, the control resource set with the minimum value of the grouping information in the N control resource sets and the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried in the K control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource, or, it can be understood that the control resource set with the minimum value of the grouping information in the N control resource sets and the K control resource sets correspond to the same transmission point.

[0176] For example, Figure 4D As shown, the base station is configured with 2 carriers in total, wherein the grouping information configured for CORESET#1 on the first carrier (CC1) is group 0, the grouping information configured for CORESET#2 is group 1, the grouping information of CORESET#3 on the second carrier (CC2) is defaulted, and the grouping information configured for CORESET#4 on the second carrier is group 0. The terminal device may determine that the grouping information of CORESET#3 on the second carrier is the minimum value (group 0), or the terminal device may determine that the grouping information of CORESET#3 on the second carrier is the maximum value (group 1), that is, when CORESET#3 corresponds to the minimum grouping information, CORESET#1, CORESET#3 and CORESET#4 correspond to the same transmission point, and when CORESET#3 corresponds to the maximum grouping information, CORESET#2 and CORESET#3 correspond to the same transmission point.

[0177] In case 5, M control resource sets are located in different carriers. When L control resource sets indicated with grouping information in the same carrier are the same grouping information, it is determined that the control resource set in the carrier not indicated with grouping information is the same as the grouping information of the L control resource sets, where L is less than or equal to N.

[0178] That is to say, when the M control resource sets are located in different carriers and the L control resource sets indicated with group information in the same carrier are the same group information, the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried by the control resource sets in the L control resource sets and the K control resource sets located in the same carrier as the L control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource. Alternatively, it can be understood that the control resource sets in the L control resource sets and the K control resource sets located in the same carrier as the L control resource sets correspond to the same transmission point.

[0179] For example, Figure 4E As shown, the base station is configured with 2 carriers in total, among which the grouping information configured for CORESET#1 on the first carrier (CC1) is group 0, the grouping information configured for CORESET#2 is group 0, the grouping information of CORESET#3 is defaulted, and the grouping information configured for CORESET#4 on the second carrier (CC2) is group 1. The terminal device can determine that the grouping information of CORESET#3 on the first carrier is group 0. That is, CORESET#1, CORESET#2 and CORESET#3 correspond to the same transmission point.

[0180] In scenario 6, M control resource sets are located in different carriers, and when the grouping information of at least two control resource sets among the L control resource sets indicated with grouping information in the same carrier is different, it is determined that the control resource set in the carrier that does not indicate grouping information is the same as the grouping information of the second control resource set; wherein the grouping information of the second control resource set is the minimum or maximum value among the L control resource sets.

[0181] That is to say, when the M control resource sets are located in different carriers and the grouping information of at least two control resource sets among the L control resource sets indicated with grouping information in the same carrier is different, taking the grouping information of the second control resource set as the minimum value among the L control resource sets as an example, the control resource set with the minimum grouping information among the L control resource sets and the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried by the control resource set among the K control resource sets located on the same carrier as the L control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource. Alternatively, it can be understood that the control resource set with the minimum grouping information among the L control resource sets and the control resource set among the K control resource sets located on the same carrier as the L control resource sets correspond to the same transmission point.

[0182] For example, Figure 4F As shown, the base station is configured with 2 carriers in total, wherein the grouping information configured for CORESET#1 on the first carrier is group 0, the grouping information configured for CORESET#2 is group 1, the grouping information of CORESET#3 on the first carrier is defaulted, and the grouping information configured for CORESET#4 on the second carrier is group 1. The terminal device can determine that the grouping information of CORESET#3 on the first carrier is the minimum value (group 0), that is, CORESET#1 and CORESET#3 correspond to the same transmission point; it can also determine that the grouping information of CORESET#3 on the first carrier is the maximum value (group 1), that is, CORESET#2 and CORESET#3 correspond to the same transmission point.

[0183] In case 7, M control resource sets are located in one or more activated carriers. When the grouping information of N control resource sets is the same, the terminal device determines that the grouping information of K control resource sets is the same as the grouping information of N control resource sets.

[0184] That is to say, M control resource sets are in the activated carriers among the configured multiple carriers, where all control resource sets in the activated carriers are activated. For example, when N control resource sets and K control resource sets are configured with the same grouping information, the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried in the N control resource sets and the K control resource sets can be uniformly encoded, and the same HARQ-ACK feedback sequence can be generated, and can be carried in the same uplink feedback resource. Alternatively, it can be understood that the N control resource sets and the K control resource sets correspond to the same transmission point.

[0185] For example, Figure 4GAs shown, the base station is configured with 4 carriers in total, but only 2 carriers are activated, among which the grouping information of CORESET#1 on the activated first carrier (CC1) is configured as group 0, the grouping information of CORESET#2 is configured as group 0, the grouping information of CORESET#3 on the activated second carrier (CC2) is defaulted, the grouping information of CORESET#4 on CC2 is configured as group 0, the grouping information of CORESET#5 on the unactivated third carrier (CC3) is configured as group 1, and the grouping information of CORESET#6 and CORESET#7 on the unactivated fourth carrier (CC4) is configured as group 1. The terminal device can determine that the grouping information of CORESET#3 on the second carrier is group 0, that is, CORESET#1, CORESET#2, CORESET#3 and CORESET#4 correspond to the same transmission point.

[0186] In Scenario 8, M control resource sets are located in one or more activated carriers, and when the grouping information of at least two control resource sets among the N control resource sets is different, the terminal device determines that the grouping information of the K control resource sets is the same as the grouping information of the first control resource set among the N control resource sets, wherein the grouping information of the first control resource set is the minimum or maximum value among the grouping information of the N control resource sets.

[0187] That is to say, for example, when the grouping information of at least two of the N control resource sets is different, taking the grouping information of the first control resource set as the minimum value among the grouping information of the N control resource sets as an example, the control resource set with the minimum grouping information among the N control resource sets and the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried by the K control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource. Alternatively, it can be understood that the control resource set with the minimum grouping information among the N control resource sets and the K control resource sets correspond to the same transmission point.

[0188] For example, Figure 4HAs shown, the base station is configured with 4 carriers in total, but only 2 carriers are activated, among which, the grouping information of CORESET#1 on the activated first carrier (CC1) is configured as group 0, the grouping information of CORESET#2 is configured as group 1, the grouping information of CORESET#3 on the activated second carrier (CC2) is defaulted, the grouping information of CORESET#4 on the second carrier is configured as group 0, the grouping information of CORESET#5 on the inactivated third carrier (CC3) is configured as group 1, and the grouping information of CORESET#6 and CORESET#7 on the inactivated fourth carrier (CC4) is configured as group 1. The terminal device can determine that the grouping information of CORESET#3 on the second carrier is the minimum value (group 0), or the terminal device can determine that the grouping information of CORESET#3 on the second carrier is the maximum value (group 1), that is, when CORESET#3 corresponds to the minimum grouping information, CORESET#1, CORESET#3 and CORESET#4 correspond to the same transmission point, and when CORESET#3 corresponds to the maximum grouping information, CORESET#2 and CORESET#3 correspond to the same transmission point.

[0189] In case 9, the grouping information corresponding to the K control resource sets is different from the grouping information corresponding to the N control resource sets. That is to say, the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried in the K control resource sets can be uniformly encoded and generate the same HARQ-ACK feedback sequence and can be carried in the same uplink resource. Alternatively, it can be understood that the K control resource sets correspond to the same transmission point.

[0190] Optionally, HARQ-ACK feedback information corresponding to PDSCH scheduled by DCI carried in N control resource sets cannot be carried in the same uplink resource with HARQ-ACK feedback information corresponding to PDSCH scheduled by DCI carried in K control resource sets.

[0191] For example, Fig. 4IAs shown, the base station is configured with 2 carriers in total, among which the grouping information configured for CORESET#1 on carrier 1 is group 0, the grouping information configured for CORESET#2 is group 1, the grouping information of CORESET#3 on carrier 2 is default, and the grouping information configured for CORESET#4 is group 0. The terminal device determines that the grouping information of CORESET#3 is not group 0 and group 1. The terminal device can determine that the grouping information of CORESET#3 is group 2, and the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried in CORESET#3 is carried in the same uplink resource, and is not carried in the same uplink resource with the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI in other CORESETs. The terminal device may also not determine the grouping information of CORESET#3, and directly determine that the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI carried in CORESET#3 is carried in the same uplink resource, and is not carried in the same uplink resource with the HARQ-ACK feedback information corresponding to the PDSCH scheduled by the DCI in other CORESETs.

[0192] It should be noted that the terminal device may not determine the grouping information corresponding to the CORESET for which the grouping information is not configured, but directly generate the HARQ-ACK feedback information based on the above example scenario.

[0193] Consider that when the terminal device independently feeds back feedback information corresponding to data scheduled by different transmission points, different groups corresponding to CORESET may correspond to different numbers of carriers. Therefore, it is necessary to determine the number of DAI bits in the DCI corresponding to different groups to ensure that the terminal device can correctly receive the DCI and perform HARQ-ACK feedback for each group information. Figure 5 As shown, a flow chart of another communication method is provided for an embodiment of the present application, including:

[0194] Step 501: The network device determines M control resource sets.

[0195] The specific configuration method of the M control resource sets can be found in step 301 and will not be repeated here.

[0196] Step 502: The network device sends configuration information of M control resource sets to the terminal device.

[0197] In one case, the configuration information of the M control resource sets includes grouping information and carrier information of the M control resource sets. In another case, the configuration information of the M control resource sets includes carrier information of the M control resource sets and grouping information of some control resource sets.

[0198] Step 503: The terminal device receives configuration information.

[0199] Step 504: The terminal device determines the grouping information and carrier information of the M control resource sets according to the configuration information.

[0200] In one case, if the configuration information of the M control resource sets sent by the network device to the terminal device includes the grouping information of the M control resource sets, the terminal device determines the grouping information of the M control resource sets according to the configuration information. In addition, the terminal device also determines the carrier information of the M control resource sets according to the configuration information sent by the network device.

[0201] In another case, if the configuration information of the M control resource sets sent by the network device to the terminal device includes the grouping information of some control resource sets, the terminal device Figure 3 The method in the illustrated embodiment determines the grouping information of the M control resource sets. In addition, the terminal device also determines the carrier information of the M control resource sets according to the configuration information sent by the network device.

[0202] Step 505: The terminal device determines a first number of carriers of the first grouping information, wherein the first number is associated with the grouping information and carrier information of the M control resource sets.

[0203] That is to say, the terminal device determines the number of carriers corresponding to the control resource sets of each grouping information based on the grouping information and carrier information of the M control resource sets.

[0204] Optionally, the terminal device determines the first number of carriers including the first grouping information according to the CORESET having the first grouping information.

[0205] Specifically, assuming that the first grouping information is any one of the grouping information of M control resource sets, for the U control resource sets of the first grouping information, when the U control resource sets are all in the same carrier, the number of carriers corresponding to the U control resource sets is 1; when the U control resource sets are in two carriers, the number of carriers corresponding to the U control resource sets is 2.

[0206] Step 506: The terminal device determines the number of bits of the downlink assignment indication (DAI) field of the DCI carried by U control resource sets based on the first quantity.

[0207] Specifically, when the first quantity corresponding to U control resource sets is greater than 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a first value, for example, when DAI is Total DAI, the first value is 2, and when DAI includes Total DAI and counter DAI, the first value is 4; when the first quantity corresponding to U control resource sets is equal to 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a second value (for example, the number of bits is 4); the first value is greater than the second value, for example, when DAI is Total DAI, the first value is 0, and when DAI includes Total DAI and counter DAI, the first value is 2.

[0208] For example, Figure 6 As shown, the base station is configured with two carriers and two groups of CORESETs are configured on the first carrier (CC1), and two groups of CORESETs are configured on the second carrier (CC2), wherein CORESET#1 and CORESET#2 on CC1 are configured as group 1, and CORESET#3 and CORESET#4 are configured as group 2; CORESET#5 on the second carrier is configured as group 1, and CORESET#6 is configured as group 2. The terminal device determines that the number of carriers corresponding to group 1 is 2, and the number of carriers corresponding to group 2 is 2. The terminal device determines that the DCI corresponding to group 1, that is, the DAI in the DCI carried in CORESET#1, CORESET#2 and CORESET#5 includes Total DAI, and the number of bits is 4 bits. The terminal device determines that the DCI corresponding to group 2, that is, the DAI in the DCI carried in CORESET#3, CORESET#4 and CORESET#6 also includes Total DAI, and the number of bits is also 4 bits.

[0209] For example, Figure 7As shown, the base station is configured with two carriers and two groups of CORESETs are configured on the first carrier (CC1), and one group of CORESETs is configured on the second carrier (CC2), wherein CORESET#1 and CORESET#2 on CC1 are configured as group 1, CORESET#3 and CORESET#4 are configured as group 2; CORESET#5 and CORESET#6 on the second carrier are configured as group 1. The terminal device determines that the number of carriers corresponding to group 1 is 2, and the number of carriers corresponding to group 2 is 1. The terminal device determines that the DCI corresponding to group 1, that is, the DAI in the DCI carried in CORESET#1, CORESET#2, CORESET#5, and CORESET#6 includes Total DAI, and the number of bits is 4 bits. The terminal device determines that the DCI corresponding to group 2, that is, the DAI in the DCI carried in CORESET#3 and CORESET#4 does not include Total DAI, and the number of bits is also 2 bits.

[0210] In a possible embodiment, the network device determines the first number of carriers of the first grouping information, the first number is associated with the grouping information and carrier information of the M control resource sets, and then determines the number of bits of the DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information according to the number of carriers of the first grouping information, and then the network device sends the DCI including the number of bits of the DAI field to the terminal device. In this way, the network device and the terminal device have the same understanding of the DCI of the number of bits of the DAI field, so the reliability of subsequent transmission can be guaranteed.

[0211] In a possible embodiment, the terminal device determines the second number of carriers of the second grouping information based on the grouping information and carrier information of the M control resource sets; then determines the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information based on the second number; wherein V is less than M, and V is a positive integer greater than or equal to 1. The terminal device detects the DCI carried by the V control resource sets based on the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information; the terminal device sends second feedback information of the second downlink data, wherein the second downlink data is the DCI scheduling carried by the V control resource sets.

[0212] In one possible design, the terminal device is configured for an independent feedback mode, that is, the terminal device detects the DCI carried by U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information.

[0213] In one possible design, the terminal device sends first feedback information of first downlink data, wherein the first downlink data is scheduled by the DCI carried by the U control resource sets. It can be understood that the first downlink data may be one or more, and the first downlink data may be scheduled by one or more DCIs carried by one or more of the U control resource sets. This is not limited to the embodiments of the present application.

[0214] In one possible design, the terminal device detects the DCI carried by V control resource sets according to the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information; the terminal device sends second feedback information of the second downlink data, wherein the second downlink data is scheduled by the DCI carried by the V control resource sets. It can be understood that the second downlink data may be one or more, and the second downlink data may be scheduled by one or more DCIs carried by one or more of the V control resource sets. This is not limited to the embodiments of the present application.

[0215] In one possible design, the uplink feedback resources for downlink data scheduled by DCI carried by U control resource sets are different from the uplink feedback resources for downlink data scheduled by DCI carried by V control resource sets in the same time unit. That is, the first feedback information and the second feedback information are respectively carried on different uplink feedback resources in the same time unit. In other words, the terminal device sends the downlink data scheduled by DCI carried by different groups respectively to ensure that the feedback information of the downlink data scheduled by DCI carried by different groups is fed back independently.

[0216] In one possible design, the network device sends HARQ-ACK feedback mode indication signaling, and the HARQ-ACK feedback mode indication signaling is used to indicate whether the HARQ-ACK feedback adopts independent feedback or joint feedback. When the HARQ-ACK feedback mode is indicated as joint feedback, that is, the HARQ-ACK feedback supports the HARQ-ACK feedback corresponding to the data scheduled by the DCI carried in the U control resource sets corresponding to the first group information and the V control resource sets corresponding to the second group information, which are jointly carried on the same uplink resource, the terminal device determines the number of bits of the DAI field of the DCI carried in the U control resource sets corresponding to the first group information and the V control resource sets corresponding to the second group information according to the third number, wherein the third number is the number of carriers containing the first group information and / or the second group information.

[0217] In one possible design, the terminal device can determine the number of bits of the DAI field of the DCI according to the above method and correctly receive the DCI carried in the control resource set, thereby determining the number of bits of the HARQ-ACK feedback information and determining the transmit power of the PUCCH according to the number of bits of the HARQ-ACK feedback information, or determine the offset of the transmit power of the PUCCH according to the number of bits of the HARQ-ACK feedback information and determine the transmit power of the PUCCH according to the offset, and the terminal device sends HARQ-ACK feedback information with a corresponding number of bits according to the transmit power of the PUCCH.

[0218] In other words, the terminal device can determine the offset of the PUCCH transmission power according to the first indication information, the second indication information and the HARQ-ACK feedback mode indication information. Specifically, if the PUCCH is in the uplink activated BWP number b in the carrier number f in the serving cell number c and the transmission timing number of the PUCCH is i, then the PUCCH transmission power P PUCCH,b,f,c (i,q u ,q d ,l) is defined as:

[0219]

[0220] Among them, P CMAX,f,c (i) is the maximum transmission power, P O_PUCCH,b,f,c (q u ) represents the open-loop power value configured by the base station, Indicates the frequency domain resources occupied by PUCCH, PL b,f,c (q d ) is the estimated path loss value determined by the UE based on the downlink RS, Δ F_PUCCH (F) is the power adjustment value determined according to the PUCCH format, Δ TF,b,f,c (i) = 10log 10 (K 1 ·(n HARQ-ACK (i)+O SR (i)+O CSI (i)) / N RE (i)) is the power adjustment value determined according to the number of bits carried on the PUCCH, g b,f,c (i,l) represents the current PUCCH power control adjustment value, which is usually indicated by the base station through DCI.

[0221]

[0222] or,

[0223]

[0224] Among them, nHARQ-ACK Indicates the number of HARQ-ACK bits that the terminal device determines to transmit on the PUCCH; n HARQ-ACK,TB Indicates the number of serving cells or carriers using the transport block-based HARQ-ACK feedback mode; Indicates the value indicated by the counter DAI included in the last detection opportunity among multiple DCIs that schedule the PUCCH, or the DCI transmission time; Indicates the number of DCIs for scheduling downlink data detected by the terminal device in all carriers c; Indicates the maximum number of codewords / transport blocks that can be indicated in the DCI; Indicates the number of carriers configured by the base station for the terminal device; N represents the number of transport blocks scheduled by the DCI detected on carrier c at PDCCH detection time m; SPS,c Indicates the number of semi-persistent (SPS) PDSCHs received on carrier c; n HARQ-ACK,CBG Indicates the number of HARQ-ACK bits based on the CBG feedback mode determined by the terminal device to be transmitted on the PUCCH; Indicates the number of DCIs detected by the terminal device in all carriers c for scheduling downlink data based on the CBG feedback mode; Indicates the number of serving cells or carriers using the HARQ-ACK feedback mode based on code block group (CBG); Indicates the number of serving cells or carriers using the HARQ-ACK feedback mode based on code block group (CBG); It indicates the number of CBGs scheduled by the DCI detected on all carriers at 0-M-1 PDCCH detection occasions, and mod indicates modulo.

[0225] When the number of configured carriers is equal to 1, and at least one of the two high-level parameters of the control resource set grouping information and the HARQ-ACK joint feedback mode is not configured, then It is determined according to the value indicated by the counter DAI. When the number of configured carriers is equal to 1 and the grouping information of the control resource set and the HARQ-ACK joint feedback mode are configured, or when the number of configured carriers is greater than 1, It is determined based on the value indicated by Total DAI.

[0226] On the other hand, corresponding to the network device side, the network device can determine the number of bits of the DAI field of the DCI according to the method shown by the terminal device, so the network device can determine the number of bits of the HARQ-ACK feedback information according to the number of bits of the DAI field, and thus determine the PUCCH transmission power according to the number of bits of the HARQ-ACK feedback information, or determine the offset of the PUCCH transmission power according to the number of bits of the HARQ-ACK feedback information, and the network device uses the PUCCH transmission power to receive the HARQ-ACK feedback information.

[0227] In other words, the network device can determine the offset of the uplink signal transmission power according to the first indication information, the second indication information and the HARQ-ACK feedback mode indication information. Specifically, the calculation method of the transmission power offset is the same as the calculation method shown on the terminal device side, and will not be repeated here.

[0228] In a possible embodiment, the network device sends the uplink signal according to the offset of the transmission power of the uplink signal.

[0229] The following describes the device used to implement the above method in the embodiment of the present application in conjunction with the accompanying drawings. Therefore, the above content can be used in subsequent embodiments, and the repeated content will not be repeated.

[0230] Figure 8 800 is a schematic diagram showing the structure of a communication device 800. The communication device 800 can implement the functions of the terminal device mentioned above. The communication device 800 can be the terminal device mentioned above, or can be a chip set in the terminal device mentioned above. The communication device 800 can include a processor 801 and a transceiver 802. The processor 801 can be used to execute Figure 3 Step 304 in the embodiment shown, and / or other processes for supporting the technology described herein, for example, all or part of the other processes except the transceiver process performed by the terminal device described above can be performed. The transceiver 802 can be used to perform Figure 3 303 in the illustrated embodiment, and / or other processes for supporting the technology described herein, for example, may execute all or part of the transceiver processes executed by the terminal device described above.

[0231] For example, the transceiver 802 is used to receive first indication information sent by a network device, where the first indication information is used to indicate grouping information of N control resource sets among M control resource sets, where N is less than M, and N and M are positive integers greater than or equal to 1.

[0232] The processor 801 is configured to determine, according to first indication information, grouping information of K control resource sets excluding N control resource sets among the M control resource sets.

[0233] In a possible implementation, when the grouping information of the N control resource sets is the same, the terminal device determines that the grouping information of the K control resource sets is the same as the grouping information of the N control resource sets;

[0234] In a possible implementation, when the grouping information of at least two control resource sets among the N control resource sets is different, the terminal device determines that the grouping information of the K control resource sets is the same as the grouping information of the first control resource set among the N control resource sets, wherein the grouping information of the first control resource set is the minimum value or the maximum value among the grouping information of the N control resource sets.

[0235] In a possible implementation manner, the M control resource sets belong to the same carrier or the same BWP.

[0236] In a possible implementation manner, when the L control resource sets indicated with grouping information in the same carrier are the same grouping information, the terminal device determines that the control resource set not indicated with grouping information in the same carrier is the same as the grouping information of the L control resource sets;

[0237] In a possible implementation, when there are at least two control resource sets with different grouping information among the L control resource sets with indicated grouping information in the same carrier, the terminal device determines that the control resource set with no grouping information indicated in the same carrier is the same as the grouping information of the second control resource set; wherein L is less than N, L is a positive integer greater than or equal to 1, and the grouping information of the second control resource set is the minimum or maximum value among the grouping information of the L control resource sets.

[0238] In a possible design, the M control resource sets are control resource sets in a carrier configured through RRC signaling or control resource sets in a carrier activated through MAC CE signaling. That is, the M control resource sets may all be control resource sets in activated carriers, or may partially be control resource sets in activated carriers, and the rest may be control resource sets in unactivated carriers.

[0239] In a possible embodiment, the terminal device receives second indication information, where the second indication information is used to indicate carrier information of M control resource sets; and the method further includes:

[0240] The terminal device determines a first number of carriers of first grouping information; wherein the first grouping information is any one of the grouping information of M control resource sets, and then the terminal device determines, based on the first number, the number of bits of the downlink allocation index DAI field of the DCI carried by U control resource sets corresponding to the first grouping information; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

[0241] In the embodiment of the present application, when the grouping information of the control resource set is defaulted, the terminal device can still determine the number of bits of the DAI field of the DCI carried by the control resource set based on all or part of the grouping information and carrier information of the control resource set, ensuring that the terminal device and the network device have a consistent understanding of the number of DAI bits and increasing transmission reliability. The terminal device determines the number of bits of the DCI carried in the control resource set under the grouping information only based on the number of carriers containing the same grouping information, thereby reducing the overhead of the DCI.

[0242] In a possible embodiment, the first indication information and the second indication information may be carried in the same message or in different messages.

[0243] In a possible embodiment, when the first number is greater than 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a first value; when the first number is equal to 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by U control resource sets is a second value; the first value is greater than the second value. For example, when the number of carriers including the first grouping information is 2, the terminal device determines that the number of bits of the Total DAI field in the DCI carried by the control resource set corresponding to the first grouping information is 2, and when the number of carriers of the first grouping information is 1, the terminal device determines that the number of bits of the Total DAI field in the DCI carried by the control resource set corresponding to the first grouping information is 0.

[0244] In a possible embodiment, the terminal device determines the number of bits of downlink data feedback information and the bit position of each downlink data feedback information in the feedback information sequence according to the DAI. Specifically, the DAI may include counterDAI. When the number of carriers is greater than 1, the DAI may also include Total DAI, wherein the counter DAI is used to identify the order of the DCI, thereby indicating the bit position of the data scheduled by the DCI in the feedback information sequence, and the Total DAI is used to identify the number of DCIs corresponding to the currently existing data to be fed back, thereby indicating the number of bits in the feedback information sequence.

[0245] In a possible embodiment, the terminal device detects the DCI carried by U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information.

[0246] In a possible embodiment, the terminal device sends first feedback information of first downlink data, wherein the first downlink data is DCI scheduled by at least one of U control resource sets.

[0247] In a possible embodiment, the terminal device generates a first feedback information sequence according to the DCI carried by at least one of the U control resource sets.

[0248] The terminal device determines the number of bits of DCI carried in the control resource set under the group information only according to the number of carriers containing the same group information, thereby reducing the overhead of DCI.

[0249] In a possible embodiment, the terminal device determines the second number of carriers including second grouping information based on the grouping information and carrier information of M control resource sets; wherein the second grouping information is any one of the grouping information of the M control resource sets, and the second grouping information is different from the first grouping information; the terminal device determines the number of bits of the downlink allocation index DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information based on the second number; wherein V is less than M, and V is a positive integer greater than or equal to 1; the terminal device detects the DCI carried by the V control resource sets based on the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information.

[0250] In a possible embodiment, uplink feedback resources for downlink data scheduled by DCI carried by U control resource sets and uplink feedback resources for downlink data scheduled by DCI carried by V control resource sets are different in the same time unit.

[0251] In a possible embodiment, the terminal device sends second feedback information of second downlink data, wherein the second downlink data is scheduled by at least one DCI carried by V control resource sets.

[0252] In a possible embodiment, the first feedback information and the second feedback information are respectively carried on different uplink resources in the same time unit. Specifically, in a time slot, the first feedback information and the second feedback information can be carried on two PUCCH resources in time division or frequency division in the same slot.

[0253] In a possible embodiment, the terminal device determines the HARQ-ACK feedback information corresponding to the downlink data scheduled by DCI carried on the control resource set with the same configured packet information, generates a HARQ-ACK sequence, and determines the uplink resource occupied by the sequence. Moreover, the terminal device separately generates a HARQ-ACK sequence for the HARQ-ACK feedback information corresponding to the DCI carried on the control resource sets with different configured packet information and separately determines the uplink resource occupied by each HARQ-ACK sequence.

[0254] In addition, Figure 8 the processor 801 of the communication device shown may be used to execute Figure 5 steps 504 to 506 in the embodiment shown, and / or other processes for supporting the technologies described herein. For example, it may execute all other processes or some of the other processes other than the transceiver process performed by the terminal device described above. The transceiver 802 may be used to execute Figure 5 503 in the embodiment shown, and / or other processes for supporting the technologies described herein. For example, it may execute all or some of the transceiver processes performed by the terminal device described above.

[0255] For example, the transceiver 802 is used to receive configuration information.

[0256] The processor 801 is used to determine the packet information of M control resource sets according to the configuration information, and then determine the first quantity of carriers of the first packet information according to the packet information of the M control resource sets and the carrier information; where the first packet information is any one of the packet information of the M control resource sets; the terminal device determines the number of bits of the DAI field of the DCI carried on the U control resource sets corresponding to the first packet information according to the number of carriers of the first packet information; where U is less than M, and U and M are positive integers greater than or equal to 1.

[0257] In a possible embodiment, when the first quantity is greater than 1, the terminal device determines that the number of bits of the DAI field of the DCI carried on the U control resource sets is a first value;

[0258] When the first is equal to 1, the terminal device determines that the number of bits of the DAI field of the DCI carried on the U control resource sets is a second value; the first value is greater than the second value.

[0259] Fig. 9The structure diagram of a communication device 900 is shown. The communication device 900 can implement the functions of the network device mentioned above. The communication device 900 can be the network device mentioned above, or can be a chip set in the network device mentioned above. The communication device 900 can include a processor 901 and a transceiver 902. The processor 901 can be used to execute Figure 3 In step 301 of the embodiment shown, the transceiver 902 is used to perform Figure 3 In the illustrated embodiment, step 302 is performed.

[0260] In a possible implementation manner, when the grouping information of the N control resource sets is the same, the grouping information of the N control resource sets is the same as the grouping information of the K control resource sets.

[0261] In a possible implementation, when the grouping information of at least two control resource sets among the N control resource sets is different, the grouping information of the first control resource set among the N control resource sets is the same as the grouping information of the K control resource sets, wherein the grouping information of the first control resource set is the minimum value or the maximum value among the grouping information of the N control resource sets.

[0262] In a possible implementation manner, the M control resource sets belong to the same carrier or the same BWP.

[0263] In a possible implementation, when the L control resource sets indicated with grouping information in the same carrier are the same grouping information, the grouping information of the L control resource sets is the same as the control resource set not indicated with grouping information in the same carrier.

[0264] In one possible implementation, when there are at least two control resource sets with different grouping information among L control resource sets indicated with grouping information in the same carrier, the grouping information of the second control resource set among the L control resource sets is the same as the grouping information of the control resource set without grouping information indicated in the same carrier; wherein, L is less than N, and the grouping information of the second control resource set is the minimum value or the maximum value among the grouping information of the L control resource sets.

[0265] In a possible implementation manner, the M control resource sets are control resource sets in a carrier configured through RRC signaling or MAC CE signaling.

[0266] in addition, Fig. 9 The processor 901 of the communication device shown can be used to execute Figure 5Step 501 in the embodiment shown may execute all or part of other processes except the transceiver process, and / or other processes for supporting the technology described herein, for example, all or part of other processes except the transceiver process executed by the terminal device described above may be executed. The transceiver 902 may be used to execute Figure 5 502 in the illustrated embodiment, and / or other processes for supporting the technology described herein, for example, may execute all or part of the transceiver processes executed by the terminal device described above.

[0267] For example, processor 901 is configured to determine M control resource sets.

[0268] The transceiver 902 is configured to send configuration information of M control resource sets, where the configuration information includes grouping information and carrier information of the M control resource sets.

[0269] Processor 901 is also used to determine a first number of carriers containing first grouping information, where the first number is associated with the grouping information and carrier information of M control resource sets; wherein the first grouping information is any one of the grouping information of the M control resource sets; the terminal device determines, based on the first number, the number of bits of the DAI field of the DCI carried by the U control resource sets corresponding to the first grouping information; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

[0270] It can be understood that in each embodiment of the present application, the first quantity is associated with the grouping information and carrier information of M control resource sets, which can specifically refer to the network device determining the first quantity based on the grouping information and carrier information of the M control resource sets; or, it can refer to the network device first determining the first quantity, and then determining the grouping information and carrier information of the M control resource sets based on the first quantity. The embodiments of the present application do not specifically limit the order of sequence or causal relationship.

[0271] The transceiver 902 is also used to send DCI to the terminal device.

[0272] In a possible implementation, when the first number is greater than 1, the network device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a first value;

[0273] When the first number is equal to 1, the network device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a second value; the first value is greater than the second value.

[0274] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0275] In a possible embodiment, the above Figure 8 The transceiver 802 in the embodiment may be composed of Fig.10 The transceiver module 1002 is implemented, Figure 8 The processor 801 in the embodiment may be composed of Fig.10 The processing module 1001 in the embodiment of the present application is used to implement the present invention, and the embodiments of the present application will not be described in detail.

[0276] In a possible embodiment, the above Fig. 9 The transceiver 902 in the embodiment may be composed of Fig.11 The transceiver module 1102 is implemented in Fig. 9 The processor 901 in the embodiment may be composed of Fig.11 The processing module 1101 in the embodiment of the present application is used to implement the above, and the embodiments of the present application will not be described in detail.

[0277] Based on the same concept as the above method embodiment, the embodiment of the present application also provides a computer-readable storage medium, on which some instructions are stored. When these instructions are called and executed by a computer, the computer can complete the method involved in any possible design of the above method embodiment and the method embodiment. In the embodiment of the present application, the computer-readable storage medium is not limited, for example, it can be RAM (random-access memory), ROM (read-only memory), etc.

[0278] Based on the same concept as the above method embodiment, the present application also provides a computer program product, which, when called and executed by a computer, can complete the method embodiment and the methods involved in any possible design of the above method embodiment.

[0279] Based on the same concept as the above-mentioned method embodiment, the present application also provides a chip, which may include a processor and an interface circuit, for completing the methods involved in the above-mentioned method embodiment and any possible implementation of the method embodiment, wherein "coupling" refers to the direct or indirect combination of two components with each other, and this combination may be fixed or movable, and this combination can allow flowing liquid, electricity, electrical signals or other types of signals to communicate between the two components.

[0280] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

[0281] The various illustrative logic units and circuits described in the embodiments of the present application can be implemented or operated by a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or the design of any combination of the above functions. The general-purpose processor can be a microprocessor, and optionally, the general-purpose processor can also be any traditional processor, controller, microcontroller or state machine. The processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration to implement.

[0282] The steps of the method or algorithm described in the embodiments of the present application can be directly embedded in the hardware, the software unit executed by the processor, or the combination of the two. The software unit can be stored in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM or other storage media of any form in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and can write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and the storage medium can be arranged in an ASIC, and the ASIC can be arranged in a terminal device. Optionally, the processor and the storage medium can also be arranged in different components in the terminal device.

[0283] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0284] Although the present invention has been described in conjunction with specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the scope of the present invention. Accordingly, this specification and the accompanying drawings are merely exemplary illustrations of the present invention as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, the present invention is intended to include such modifications and variations if they fall within the scope of the claims of the present invention and their equivalents.

Claims

1. A communication method, It is characterized in that include: The terminal device receives first indication information, where the first indication information is used to indicate grouping information of N control resource sets among M control resource sets, where N is less than M, and N and M are positive integers greater than or equal to 1; The terminal device determines the grouping information of K control resource sets among the M control resource sets excluding the N control resource sets based on the first indication information, where K is a positive integer greater than or equal to 1, and the grouping information of the K control resource sets is defaulted.

2. The method according to claim 1, It is characterized in that The terminal device determines, according to the first indication information, grouping information of K control resource sets in the M control resource sets except the N control resource sets, including: When the grouping information of the N control resource sets is the same, the terminal device determines that the grouping information of the K control resource sets is the same as the grouping information of the N control resource sets; and / or When the grouping information of at least two control resource sets among the N control resource sets is different, the terminal device determines that the grouping information of the K control resource sets is the same as the grouping information of the first control resource set among the N control resource sets, wherein the grouping information of the first control resource set is the minimum value or the maximum value among the grouping information of the N control resource sets.

3. The method according to claim 2, It is characterized in that The M control resource sets belong to the same carrier or the same partial bandwidth BWP.

4. The method according to claim 1, It is characterized in that The terminal device determines, according to the first indication information, grouping information of K control resource sets in the M control resource sets except the N control resource sets, including: When the L control resource sets indicated with grouping information in the same carrier are the same grouping information, the terminal device determines that the control resource set not indicated with grouping information in the same carrier is the same as the grouping information of the L control resource sets; and / or When there are at least two control resource sets with different grouping information among the L control resource sets with indicated grouping information in the same carrier, the terminal device determines that the control resource set with no grouping information indicated in the same carrier is the same as the grouping information of the second control resource set; wherein L is a positive integer greater than or equal to 1, the L control resource sets are part of the N control resource sets, and the grouping information of the second control resource set is the minimum or maximum value among the grouping information of the L control resource sets.

5. The method according to any one of claims 1 to 4, It is characterized in that The M control resource sets are control resource sets in a carrier configured through radio resource control layer RRC signaling or media access control layer control unit MAC CE signaling.

6. The method according to claim 1, It is characterized in that The method further comprises: The terminal device receives second indication information, where the second indication information is used to indicate carrier information of M control resource sets; The terminal device determines, according to the grouping information and carrier information of the M control resource sets, a first number of carriers including first grouping information; wherein the first grouping information is any one of the grouping information of the M control resource sets; The terminal device determines the number of bits of the downlink allocation index DAI field of the DCI carried by U control resource sets corresponding to the first grouping information based on the first quantity; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

7. The method according to claim 6, It is characterized in that The terminal device determines, according to the first quantity, the number of bits of the DAI field of the DCI carried by the U control resource sets, including: When the first number is greater than 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a first value; When the first number is equal to 1, the terminal device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a second value; the first value is greater than the second value.

8. The method according to claim 6 or 7, It is characterized in that The method further includes: The terminal device detects the DCI carried by the U control resource sets corresponding to the first grouping information based on the number of bits of the DAI field of the DCI carried by the U control resource sets.

9. The method according to claim 8, It is characterized in that The method further includes: The terminal device determines, according to the grouping information of the M control resource sets and the carrier information, a second number of carriers including second grouping information; wherein the second grouping information is any one of the grouping information of the M control resource sets, and the second grouping information is different from the first grouping information; The terminal device determines, according to the second number, the number of bits of the downlink allocation index DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information; wherein V is less than M, and V is a positive integer greater than or equal to 1; The terminal device detects the DCI carried by the V control resource sets according to the number of bits of the DAI field of the DCI carried by the V control resource sets corresponding to the second grouping information, wherein the uplink feedback resources for the downlink data scheduled by the DCI carried by the U control resource sets and the uplink feedback resources for the downlink data scheduled by the DCI carried by the V control resource sets are different within the same time unit.

10. A communication method, It is characterized in that include: The network device determines M control resource sets; The network device sends first indication information to the terminal device, where the first indication information includes grouping information of N control resource sets among M control resource sets, where N is less than M, and N and M are positive integers greater than or equal to 1; The grouping information of the N control resource sets is related to the grouping information of K control resource sets among the M control resource sets except the N control resource sets, and the grouping information of the K control resource sets is defaulted.

11. The method according to claim 10, It is characterized in that When the grouping information of the N control resource sets is the same, the grouping information of the N control resource sets is the same as the grouping information of the K control resource sets; and / or When the grouping information of at least two control resource sets among the N control resource sets is different, the grouping information of the first control resource set among the N control resource sets is the same as the grouping information of the K control resource sets, wherein the grouping information of the first control resource set is the minimum value or the maximum value among the grouping information of the N control resource sets.

12. The method according to claim 11, It is characterized in that The M control resource sets belong to the same carrier or the same partial bandwidth BWP.

13. The method according to claim 10, It is characterized in that When the L control resource sets indicated with grouping information in the same carrier are the same grouping information, the grouping information of the L control resource sets is the same as the control resource set not indicated with grouping information in the same carrier; and / or When there are at least two control resource sets with different grouping information among the L control resource sets indicated with grouping information in the same carrier, the grouping information of the second control resource set among the L control resource sets is the same as the grouping information of the control resource set without grouping information indicated in the same carrier; wherein L is a positive integer greater than or equal to 1, the L control resource sets are part of the N control resource sets, and the grouping information of the second control resource set is the minimum or maximum value among the grouping information of the L control resource sets.

14. The method according to any one of claims 10 to 13, It is characterized in that The M control resource sets are control resource sets in a carrier configured through radio resource control layer RRC signaling or media access control layer control unit MAC CE signaling.

15. The method according to claim 10, It is characterized in that The method further includes: The network device determines a first number of carriers containing first grouping information; wherein the first grouping information is any one of the grouping information of the M control resource sets; The network device determines the number of bits of the downlink allocation index DAI field of the DCI carried by U control resource sets corresponding to the first grouping information based on the first quantity; wherein U is less than M, and U and M are positive integers greater than or equal to 1.

16. The method according to claim 15, It is characterized in that The network device determines, according to the first quantity, the number of bits of the DAI field of the DCI carried by the U control resource sets, including: When the first number is greater than 1, the network device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a first value; When the first number is equal to 1, the network device determines that the number of bits of the DAI field of the DCI carried by the U control resource sets is a second value; the first value is greater than the second value.

17. The method according to claim 15 or 16, It is characterized in that The network device sends DCI in one or more of the U control resource sets according to the number of bits of the DAI field of the DCI carried by the U control resource sets.

18. A communication device, It is characterized in that The device comprises at least one processor, wherein the at least one processor is connected to a memory, and the at least one processor is used to read and execute a program stored in the memory, so that the device executes the method according to any one of claims 1-9, or 10-17.

19. A chip, It is characterized in that The chip includes a processor, which is coupled to a memory and is used to read and execute program instructions stored in the memory to implement the method according to any one of claims 1-9, or 10-17.

20. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores computer instructions, and when the instructions are executed on a computer, the computer executes the method according to any one of claims 1 to 17.

21. A computer program product, It is characterized in that When the computer program product is called by a computer, it enables the computer to execute the method according to any one of claims 1 to 17.

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